WO2024209151A1 - PROCEDE DE FABRICATION D'ACIDES CARBOXYLIQUES a-ß INSATURES BIOSOURCES A PARTIR DE POLY(3-HYDROXYALCANOATE) - Google Patents
PROCEDE DE FABRICATION D'ACIDES CARBOXYLIQUES a-ß INSATURES BIOSOURCES A PARTIR DE POLY(3-HYDROXYALCANOATE) Download PDFInfo
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- WO2024209151A1 WO2024209151A1 PCT/FR2024/050413 FR2024050413W WO2024209151A1 WO 2024209151 A1 WO2024209151 A1 WO 2024209151A1 FR 2024050413 W FR2024050413 W FR 2024050413W WO 2024209151 A1 WO2024209151 A1 WO 2024209151A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/50—Use of additives, e.g. for stabilisation
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
- C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
- C07C57/03—Monocarboxylic acids
- C07C57/04—Acrylic acid; Methacrylic acid
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
- C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
- C07C57/03—Monocarboxylic acids
- C07C57/08—Crotonic acid
Definitions
- the present invention relates to a process for manufacturing biosourced unsaturated DE carboxylic acids from biomass containing a poly(3-hydroxyalkanoate), or from a solid poly(3-hydroxyalkanoate) previously extracted from this biomass in the presence of polymerization inhibitors, by thermolysis of said polymer, in the absence of a catalyst mainly in unsaturated DE carboxylic acid in gaseous form without using an inert gas to facilitate the evaporation of this acid,
- This invention describes more precisely the step of thermolysis of the biomass or of the P3HA, then the purification steps making it possible to obtain the unsaturated DE carboxylic acid and the recycling of the intermediate products.
- Document US 9850192 describes a process for the production of acrylic acid from a genetically modified microbial biomass metabolizing glucose or any other renewable raw material, to produce a homopolymer or a copolymer of poly-3-hydroxypropionate (P3HP) inside microbial cells.
- Said process comprises a step of thermolysis of the washed/dried/crushed biomass containing P3HP, in the presence of a catalyst.
- the acrylic acid is recovered in gaseous form and then condensed, while the catalyst as well as the residual mass of biomass can be recycled in the process or subjected to thermal regeneration.
- the risk is that the residue present in the reactor after thermolysis is pasty. and sticky, which could make its transition to industrial scale complex.
- Example 5 and Figure 7 describe how to implement this invention on an industrial scale.
- the biomass is washed and dried using an atomizer or a double drum dryer.
- the product is pyrolyzed in a FAST TM reactor at 250°C-350°C with a residence time of between 0.25-1 hour using an inert gas such as nitrogen to send the vapors formed to the purification equipment.
- the vapor phase is composed of 90% organic/water and 10% inert gas.
- the gas is then purified, according to the process described in document US 6646161 or in document US 20120006673, to obtain acrylic acid still containing many impurities.
- one or more inhibitors may be added to the P3HA before carrying out the thermolysis, preferably in a proportion of 150 ppm to 350 ppm relative to the P3HA in the presence of depleted air ( ⁇ 6% O2) (0107-0108). Furthermore, regarding the acrylic acid formed during this thermolysis, no inhibitor (0111) is added during its condensation. Finally, this document highlights that at a temperature of 175°C (00143) and in the absence of a catalyst, the thermolysis was ineffective. When the thermolysis of P3HA is carried out in the liquid phase as in document JP 2015067567, in the absence or presence of a catalyst and in the absence of an inhibitor, this reaction is preferably carried out in the presence of an inert gas to evaporate the acrylic acid formed (0031).
- the applicant company proposes to carry out the thermolysis of the P3HA in the absence of a catalyst and in the presence of a polymerization inhibitor; typically, the vapor pressure of at least one of the inhibitors at the thermolysis temperature is at least twice the pressure at which the thermolysis is carried out, which has the effect of preventing the formation of polymers in the reactor as well as in the gas phase in the event of accidental condensation or at the time of condensation of the acrylic acid vapors at the top of the column.
- thermolysis of biomass containing P3HA or the thermolysis of solid P3HA and at least one polymerization inhibitor
- a system of staged condensation of the thermolysis gases, fractional distillation and optionally crystallization in the absence of a catalyst and without using an inert gas to promote the evaporation of the unsaturated carboxylic acid ⁇ D ⁇ E formed.
- thermolysis of PHA in the presence of at least one polymerization inhibitor is carried out in the absence of another chemical species which accelerates or reorients the kinetics of the reaction.
- Thermolysis such as that envisaged is only induced by the operating conditions such as temperature, pressure and residence time.
- chemical species that lead to different types of catalysis depending on the nature of the species are excluded: - homogeneous catalysis, if the catalyst and the reagents form only one phase (often liquid); - heterogeneous catalysis, if the catalyst and the reagents form several phases (generally a solid catalyst for reagents in gas or liquid phase); - enzymatic catalysis, if the catalyst is an enzyme, i.e. a protein.
- thermolysis of the PHA and in the presence of at least one polymerization inhibitor is carried out in the absence of gas injection such as for example depleted air ( ⁇ 6% O2) which facilitate the evaporation of the acid formed and also facilitate the activation of the inhibitors in the reaction medium.
- gas injection such as for example depleted air ( ⁇ 6% O2) which facilitate the evaporation of the acid formed and also facilitate the activation of the inhibitors in the reaction medium.
- the invention proposes to provide a simple and easy-to-implement solution for obtaining ⁇ - ⁇ unsaturated carboxylic acids from biomass containing P3HA, or from solid PH3HA, by implementing a thermolysis reactor coupled with an optimized purification process.
- the subject of the present invention is a process for manufacturing a biosourced unsaturated DE carboxylic acid, said process comprising the following steps: - mixing a biomass containing a poly(3-hydroxyalkanoate) (P3HA), or solid P3HA, with at least one polymerization inhibitor in the absence of a catalyst; - subjecting said biomass-inhibitor or P3HA-inhibitor mixture to a thermolysis step leading to obtaining, on the one hand, said unsaturated DE carboxylic acid in vapor phase, and on the other hand, a molten or solid residue, without adding an inert gas; - condensing in one or more stages, the gases resulting from the thermolysis, then feeding a distillation column with the thermolysis gases obtained, - fractionating the thermolysis gases into recovered light products, into heavy products recycled to the thermolysis reactor and into ⁇ - ⁇ unsaturated carboxylic acid having a purity greater than 98% which can be crystallized to achieve a purity > 99.5%, -
- said process comprises the following characteristics, where appropriate combined.
- the contents indicated are expressed by weight, unless otherwise indicated. In the ranges of values indicated, the limits are included.
- the term "thermolysis" of poly(3-hydroxyalkanoate) (P3HA) means its chemical decomposition into unsaturated carboxylic acid DE obtained under the effect of temperature. This term is synonymous with pyrolysis.
- the poly(3-hydroxyalkanoate) used in the method comprises a single type of 3-hydroxyalkanoate unit and the product formed is therefore composed of a single unsaturated DE carboxylic acid.
- the poly(3-hydroxyalkanoate) is poly(3-hydroxypropionate) and the unsaturated DE carboxylic acid produced is acrylic acid.
- the poly(3-hydroxyalkanoate) is poly(3-hydroxyisobutyrate) and the unsaturated DE carboxylic acid produced is methacrylic acid. In one embodiment, the poly(3-hydroxyalkanoate) is poly(3-hydroxybutyrate) and the unsaturated DE carboxylic acid produced is crotonic acid. In one embodiment, the poly(3-hydroxyalkanoate) used in the method comprises several different 3-hydroxyalkanoate units and the product formed is therefore composed of a mixture of different unsaturated DE carboxylic acids.
- P3HA copolymers are poly-3-hydroxybutyrate-co-3-hydroxypropionate (poly-3HB-co-3HP) or poly-3-hydroxybutyrate-co-3-hydroxyvalerate (poly-3HB-co-3HV).
- the poly(3-hydroxyalkanoate) contains the 3-hydroxypropionate unit and at least one of the DE unsaturated carboxylic acids produced is acrylic acid.
- the poly(3-hydroxyalkanoate) contains the 3-hydroxyisobutyrate unit and at least one of the DE unsaturated carboxylic acids produced is methacrylic acid.
- the poly(3-hydroxyalkanoate) contains the 3-hydroxybutyrate unit and at least one of the DE unsaturated carboxylic acids produced is crotonic acid.
- the biomass host is a bacterium, yeast, fungus, algae, cyanobacteria, or a mixture of two or more of these.
- the biomass used is pretreated by washing, drying and grinding operations, to produce a biomass containing from 30% to 90% by weight of PHA, the remainder consisting of the cell membrane.
- the biomass is subjected to a thermolysis reaction, which takes place in the presence of one or more polymerization inhibitors.
- the P3HA with a purity greater than 95% by weight comes from the extraction of the P3HA by a solvent, evaporation of the latter and removal of the cell membrane by filtration and centrifugation.
- the thermolysis reaction takes place in the presence of one or more polymerization inhibitors.
- mixing and thermolysis are carried out continuously in successive stages or simultaneously.
- the mixture comprising the biomass comprises at least 0.01% of one or more polymerization inhibitors up to 5% and preferably less than 1% of one or more polymerization inhibitors (mass contents).
- the mixture comprising the P3HA comprises at least 0.5% of one or more polymerization inhibitors up to 90% of one or more polymerization inhibitors (mass contents) and preferably between 20% and 70% of one or more polymerization inhibitors.
- the method according to the invention comprises one to several stages of condensation of the vapors of the unsaturated DE carboxylic acid(s) obtained by the thermolysis reaction of poly(3-hydroxyalkanoate).
- the condensates obtained can be recycled into the thermolysis reactor and to the separation column.
- one or more inhibitors are also injected into the condensers. According to one embodiment, there are no inhibitors injected into the condensers.
- one or more distillation columns can be used to purify the unsaturated DE carboxylic acid.
- the condensates obtained can be subjected to a rectification or crystallization treatment before being recycled to the thermolysis reactor.
- the separation column is fed in the gas phase.
- the bottom of the distillation column is recycled to the thermolysis reactor.
- the bottom of the separation column is subjected to a rectification or a crystallization operation before being recycled to the thermolysis reactor.
- the unsaturated DE carboxylic acid obtained at the top or in side draw-off has a purity of at least 98% by weight.
- this unsaturated DE carboxylic acid can be further purified in a subsequent crystallization step.
- the purity of the unsaturated DE carboxylic acid after crystallization is greater than 99.5% by weight.
- the column head products are sent to a biological purification plant.
- these column head products are recovered as methane by hydrothermal gasification.
- the method according to the invention comprises a step of treating the solid or molten residue at the end of thermolysis by recovering the latter by recycling upstream of the thermolysis reactor or by external treatment such as gasification.
- Figure 1 represents the principle diagram of an installation for implementing the method according to the invention, when it is applied to a P3HA-inhibitor mixture.
- Figure 2 shows the schematic diagram of an installation for implementing the method according to the invention, when applied to a biomass-inhibitor mixture.
- the illustration of the invention will be carried out by describing the method applied to poly(3-hydroxypropionate) (P3HP) extracted from the cell membrane, or to biomass still containing P3HP, making it possible to obtain unsaturated D-E carboxylic acid (in this case acrylic acid) having a purity greater than 99.5% by weight.
- P3HP poly(3-hydroxypropionate)
- the invention aims to produce acrylic acid on an industrial scale by thermolysis of poly(3-hydroxypropionate), by limiting the problems of fouling of the thermolysis reactor and making it possible to obtain this acid with a purity >98% or even >99.5% by weight.
- said method for obtaining bio-sourced acrylic acid comprises the following steps which can be carried out sequentially or simultaneously: - Introduction of the biomass (in powder form) or P3HP and at least one polymerization inhibitor, in the absence of a catalyst, into a mixer (in solid phase) by means of a pipe or by a conveyor of the endless screw type.
- thermolysis reactor Mixing of the P3HP or biomass and at least one polymerization inhibitor in a conveyor mixer comprising several endless screws operated in a sheath or directly in a reactor called a thermolysis reactor.
- thermolysis reactor Thermolysis of this mixture at a given temperature and at a controlled pressure in a system adapted to the treatment of the molten or pasty residue, in order to generate a vapor phase and a viscous or even solid phase without injection of an inert gas.
- biomass means an organic material of plant (including microalgae), animal, bacterial or fungal (fungi) origin, usable as a source of biosourced raw materials, as opposed to raw materials of fossil origin.
- the first step uses genetically modified host biomass, resulting from genetic engineering.
- the host of the biomass is a bacterium, a yeast, a fungus, an algae, a cyanobacteria or a mixture of two or more of these elements.
- the biomass is obtained by a prior step of culturing a recombinant host with a renewable raw material.
- the renewable raw material is selected from glucose, fructose, sucrose, arabinose, maltose, lactose, xylose, ethanol, methanol, glycerol, fatty acids, vegetable oils and syngas derived from biomass or a combination thereof.
- the biomass used in the method according to the invention comes from a bacterial fermentation process of sugars or lipids.
- P3HA poly(3-hydroxyalkanoates)
- the process according to the invention advantageously comprises a preliminary step of preparing the biomass, where the latter is treated by washing, drying and grinding operations, to produce a solid biomass (for example in powder form) containing at least 30% by weight of P3HA, preferably at least 50% by weight of P3HA.
- flow 1 represents the supply of one or more inhibitors to the thermolysis reactor.
- the polymerization inhibitors used in the process according to the invention are chosen among the inhibitors conventionally used in existing industrial processes for the production of unsaturated DE carboxylic acids.
- phenolic derivatives such as hydroquinone (HQ) and its derivatives such as hydroquinone methyl ether (EMHQ), 2,6-di-terbutyl-4-methyl phenol (BHT) or 2,4-dimethyl-6-terbutyl phenol (Topanol A); phenothiazine and its derivatives; nitroxide compounds such as 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl (4-OH-TEMPO); and amine compounds such as paraphenylenediamine derivatives.
- Stream 2 consists of P3HA previously extracted from the biomass. It is fed via a pipe to the thermolysis reactor.
- Stream 1 and stream 2 are fed into the thermolysis reactor by a pipe, a worm screw, a conveyor belt or a hopper, a pneumatic conveyor, a vibrating conveyor, an extruder. In addition, they can be coupled to a metering device.
- at least one of said polymerization inhibitors is hydroquinone methyl ether (HMEQ).
- HMEQ hydroquinone methyl ether
- the mass proportion of inhibitor in the mixture with the P3HA or with the biomass is at least 0.01% and can reach 90%; preferably the inhibitor content in said mixture is from 1% to 70%.
- the thermolysis reactor is a solvolysis reactor also used to depolymerize composites or a molten medium polycondensation type reactor.
- thermolysis reactor is equipped with a heating system and stirring by a pump and external recirculation through an exchanger or a magnetically driven shaft of the double helical ribbon type.
- the temperature in the thermolysis reactor is between 20 °C and 250 °C, preferably from 150 °C to 200 °C. This temperature can also be controlled by means of temperature sensors placed in the reactor. Such moderate heating makes it possible to liquefy all or part of the mixture while avoiding the polymerization of the unsaturated carboxylic acid DE.
- the pressure in the thermolysis reactor is between 3 kPa and 101 kPa, preferably between 15 kPa and 40 kPa.
- the residence time in the thermolysis reactor is between 0.5 h and 5 h, preferably between 2 h and 4 h.
- the flow 3 at the outlet of the thermolysis reactor is sent in whole or in part to a recovery unit or recycled upstream of the thermolysis reactor.
- the flow 5 feeds a first condenser C1 which will cool the gases to a temperature at least 20°C lower than the temperature of the thermolysis reactor and generate a liquid flow 12 which is recycled to the thermolysis reactor or which can be purified by crystallization (not shown) before recycling to the thermolysis reactor.
- the non-condensed gases exiting this condenser C1 by the stream 8 are condensed in a condenser C2 at a temperature at least 20 °C lower than that of the condenser C1. This temperature is adjusted so that the mass content of inhibitor in the stream 11 is less than 3%.
- the stream 11 may be gaseous or liquid after condensation (not shown) before entering the separation column (COL) which will make it possible to recover unsaturated carboxylic acid DE with a purity greater than 98.5% at a temperature 5 °C lower, preferably 10 °C below the bubble point of the feed to this separation column.
- Streams 9 and 12 can be fully or partially recycled to the thermolysis reactor or sent to a crystallizer (not shown) to be separated and purified so as to obtain, on the one hand, part of the heavy impurities and the inhibitor that can be recycled to the thermolysis reactor and, on the other hand, acrylic acid that can be sent to the feed of the separation column (COL).
- Condensers C1 and C2 can also be fed with a solution of at least one inhibitor in solution in unsaturated DE carboxylic acid (streams 6 and 7).
- the separation column is equipped with a lateral draw-off and comprises a number of theoretical plates between 10 and 30, preferably between 20 and 25.
- This single column operates under a reduced pressure generally between 3 kPa and 30 kPa, preferably between 9 kPa and 20 kPa.
- the separation column is made up of any type of trays and/or bulk internals and/or structured packings available for the rectification of mixtures and suitable for the distillation of polymerizable compounds. It may be a conventional distillation column which may comprise at least one packing, such as for example a bulk packing and/or a combination of sections equipped with bulk and structured packings, and/or trays such as for example perforated trays, fixed valve trays, movable valve trays, cap trays, or combinations thereof. Preferably, the column is equipped with perforated trays.
- the stabilization of the column is generally carried out using stabilizers well known to those skilled in the art, possibly with injection of air or oxygen-depleted air (stream 16).
- the column is fed in the first quarter of the bottom of the column, preferably at a tray ranging from trays 1 to 7, preferably from trays 3 to 5.
- Stream 4 rich in light compounds is distilled at the top of the column and recovered by hydrothermal gasification or at a biological treatment station after condensation.
- the unsaturated DE carboxylic acid having a purity > 98% is withdrawn in the liquid phase or in the gas phase, preferably in the first third of the top of the separation column, in particular between theoretical trays 1 to 5 trays located below the column top.
- the polymer grade unsaturated DE carboxylic acid is withdrawn in the liquid phase (stream 18).
- This stream 18 can be further purified by a crystallization operation carried out in the crystallizer (CRIS), to achieve a purity of unsaturated DE carboxylic acid > 99.5% and compatible with commercial specifications.
- this last operation for obtaining very high purity unsaturated DE carboxylic acid is carried out by fractional crystallization.
- This can be implemented in different forms: dynamic crystallization, static crystallization or suspension crystallization.
- the crystallization is in falling film, carried out in a multi-tubular exchanger; in practice, each tube is continuously supplied by the flow 18 at the head, a flow of heat transfer fluid.
- This operation actually comprises 3 steps: first crystallization at a controlled temperature of the order of 14 °C for example for acrylic acid, then sweating by a gradual increase in temperature of the heat transfer fluid to eliminate the impurities included in the crystals, and finally melting by a rapid temperature increase beyond the controlled melting temperature of the unsaturated DE carboxylic acid (approximately 14 °C for acrylic acid), but preferably below 35-40 °C.
- the bottom of the separation column (COL) is a flow of unsaturated DE carboxylic acid comprising most of the heavy impurities and a large proportion of the inhibitor is recycled in whole or in part to the thermolysis reactor.
- the mass ratio between the flow withdrawn laterally and the feed flow of the column is between 60 and 95%, preferably between 75% and 90%. According to one embodiment, the mass ratio between the flow withdrawn at the bottom and the feed flow of the column is between 5% and 30%, preferably between 5% and 10%.
- the column is equipped with a condenser and a liquid feed at the top (not shown), which ensures liquid reflux in the column.
- the reflux rate which can be defined as the recycling flow rate from the column top to the separation column (COL) relative to that of lateral withdrawal, is between 1 and 3, preferably between 1 and 2, for example is equal to 1.2.
- flow 1 represents the supply of one or more inhibitors in the thermolysis reactor, as described above.
- Stream 2 consists of biomass. It also feeds the pyrolysis reactor which in this case is a conveyor mixer of the propeller dryer type (Paddle Dryer). Streams 1 and 2 are fed into the thermolysis reactor by a pipe, a screw conveyor, a conveyor belt or a hopper, a pneumatic conveyor, a vibrating conveyor, an extruder. In addition, they can be coupled to a dosing device.
- At least one of said polymerization inhibitors is hydroquinone methyl ether (HMEQ).
- HMEQ hydroquinone methyl ether
- the mass proportion of inhibitor in the mixture with the biomass is less than 1%.
- the temperature in the thermolysis reactor is between 20 °C and 250 °C, preferably 150 °C-200 °C and the pressure in the reactor is between 3 kPa and 101 kPa, preferably between 15 kPa and 40 kPa.
- the residence time in the reactor is between 0.5 h and 5 h, preferably between 2 h and 4 h.
- the stream 3 leaving the thermolysis reactor is sent in whole or in part to a recovery unit, by combustion, spreading or gasification.
- the residue is mixed with the necessary water and recovered by hydrothermal gasification.
- the stream 5 feeds a first condenser C1 which will cool the gases to a lower temperature below the temperature of the feed tray in the separation column (COL).
- the liquid stream 11 enters the separation column at a temperature below 5 °C, preferably 10 °C below the bubble point of the column feed.
- the condensers C1 can also be fed with a solution of at least one inhibitor in solution in unsaturated carboxylic acid DE (stream 6).
- the separation column is equipped with a side draw-off and comprises a number of theoretical plates between 10 and 30, preferably between 20 and 25.
- This single column operates under a reduced pressure generally between 3 kPa and 30 kPa, preferably between 9 kPa and 20 kPa.
- the separation column is made up of any type of plates and/or bulk internals and/or structured packings available for the rectification of mixtures and suitable for the distillation of polymerizable compounds.
- the column is equipped with perforated plates.
- the stabilization of the column (stream 17) is generally carried out using stabilizers well known to those skilled in the art, possibly with injection of air or oxygen-depleted air (stream 16).
- the side draw-off stream can also be stabilized (not shown).
- the column is fed in the first quarter of the bottom of the column, preferably at a tray ranging from trays 3 to 10, preferably from trays 4 to 8.
- Stream 4 rich in light compounds, is distilled at the top of the column and recovered by hydrothermal gasification or at the biological station after condensation.
- the unsaturated DE carboxylic acid having a purity > 98% is withdrawn in the liquid phase or in the gas phase, preferably in the first quarter of the bottom of the separation column, in particular between the theoretical trays 10 to 20 trays located below the column top.
- the polymer grade unsaturated DE carboxylic acid is withdrawn in the liquid phase (stream 18). After additional cooling, this stream 18 can be further purified by a crystallization operation in a crystallizer (CRIS) to achieve a purity of unsaturated DE carboxylic acid > 99.5% and compatible with commercial specifications.
- CRIS crystallizer
- the mass ratio between the stream withdrawn laterally and the feed stream of the column is between 60 and 95%, preferably between 75% and 90%.
- the mass ratio between the flow drawn off at the bottom and the flow fed to the column is between 5% and 30%, preferably between 5% and 10%.
- COL is equipped with a condenser and a liquid feed at the top (not shown), which ensures liquid reflux in the column.
- the reflux ratio which can be defined as the recycling flow rate from the column top to the separation column (COL) relative to that of lateral withdrawal, is between 1 and 3, preferably between 1 and 2, for example is equal to 1.2.
- the step of mixing the biomass containing the P3HP with the inhibitor is carried out by introducing 2 g of this biomass and 0 or 20 mg of EMHQ or in a 50 mL two-necked flask equipped with a magnetic bar. The medium is stirred using a magnetic stirrer in order to distribute the inhibitor in the solid.
- the system is placed under the desired pressure and then the flask containing the biomass is placed in a heating system to establish the desired thermolysis temperature (oil bath or electric heating mantle). As soon as the thermolysis reactor reaches more than 170 °C, the formation of AA vapors is observed, which condense mainly in the lateral condenser.
- thermogravimetric analysis is a technique which consists of measuring the mass variation of a sample as a function of time, for a given temperature.
- Example 5-7 The tests of the following Examples 5-7 are carried out in a laboratory setup. A two-necked flask equipped with magnetic stirring was used. The side neck of the flask is equipped a thermometer to monitor the reaction temperature. The upper neck of the flask is equipped with a separation bridge leading to a water-cooled lateral condenser, itself leading to a recipe consisting of a second 50 mL flask. An additional tapping allows the assembly to be put at reduced pressure using a membrane vacuum pump.
- EXAMPLE 5 Use of a biomass containing 60% P3HP without the addition of inhibitor, without catalyst and in the absence of inert gas 2.02 g of biomass containing 60% P3HP are placed in a 25 mL two-necked flask equipped with magnetic stirring. The flask equipped with a separation bridge is placed at 20 kPa pressure using a membrane vacuum pump. The flask is heated to 200°C for 4 hours. The vapors generated are condensed using a water-cooled side condenser to obtain 1.06 g of acrylic acid, which corresponds to an 87% yield. The solid obtained after cracking remains stuck to the walls of the two-necked flask. It is very difficult to remove from the two-necked flask.
- EXAMPLE 6 Use of a biomass containing 60% P3HP with the addition of 5% 4-methoxyphenol (EMHQ) 2.19 g of biomass containing 60% P3HP are placed in a 25 ml two-necked flask equipped with magnetic stirring. 0.117 g of EMHQ are added to the flask and mixed with the biomass. The flask equipped with a separation bridge is placed at 20 kPa pressure using a membrane vacuum pump. The flask is heated to 200°C for 4 hours.
- EMHQ 4-methoxyphenol
- Example 6 show that, when the process according to the invention is implemented (in the presence of an inhibitor, without a catalyst, without the addition of an inert gas), the yield of acrylic acid reaches 95%, higher than that obtained in Comparative Example 5. In addition, the presence of the inhibitor makes it possible to easily eliminate the residue.
- Example 7 Processes according to the invention The simulations were carried out on the case of the thermolysis of P3HA poly(3-hydroxypropionate) (P3HP) giving acrylic acid (AA) as unsaturated DE carboxylic acid, using the Aspen Tech V12.1 software and the Arkema thermodynamic databases. The compounds taken into account to represent the gas phase resulting from the thermolysis, without the addition of an inert gas are listed below. The percentages are expressed as mass percentages.
- Condensation process outlet according to Figure 1 Table 3 shows the flows entering and leaving condensers C1 and C2 when the feed of C1 stream 5 is composed of 30% AA and 70% EMHQ at 200 °C and 26.7 kPa.
- Table 5 shows the flows entering and leaving the condenser C1 when the feed of C1 stream 5 is composed of 99% AA and 1% EMHQ at 200 °C and 26.7 kPa.
- C1 partially condenses the gases at 80 °C. Condensation is complete at 80 °C, i.e. at a temperature below the bubble point of the column feed tray.
- Stream 5 11 Temperature C 200 80 Pressure kPa 27 27 Mass Flow Rate kg/h 100 100 AA kg/h 99 99 EMHQ kg/h 1 1 Mass Fractions AA 0.99 0.99 EMHQ 0.01 0.01 Distillation process according to Figure 2
- Table 6 shows the flows entering and leaving the separation column. This comprises 25 theoretical stages.
- the column has 25 theoretical stages. The feed is carried out at plate 20, the acrylic acid is withdrawn at plate 17 and the light products are eliminated at the top of the column. In this simulation, flows 16 and 17 were zero. The most favorable configuration0 for recovering acrylic acid with a purity > 98% is the one with a lateral withdrawal in the liquid phase.
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Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020257033266A KR20250165614A (ko) | 2023-04-05 | 2024-03-29 | 폴리(3-하이드록시알카노에이트) 로부터 바이오기반 α,β-불포화 카르복실산의 제조 방법 |
| EP24722060.1A EP4688721A1 (fr) | 2023-04-05 | 2024-03-29 | Procédé de fabrication d'acides carboxyliques alpha, beta insaturés biosources à partir de poly(3-hydroxyalcanoate) |
| CN202480021784.8A CN120882689A (zh) | 2023-04-05 | 2024-03-29 | 由聚(3-羟基烷酸酯)生产生物基α,β-不饱和羧酸的方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2303388 | 2023-04-05 | ||
| FR2303388A FR3147566A1 (fr) | 2023-04-05 | 2023-04-05 | PROCEDE DE FABRICATION D’ACIDES CARBOXYLIQUES α-β INSATURES BIOSOURCES A PARTIR DE POLY(3-HYDROXYALCANOATE) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024209151A1 true WO2024209151A1 (fr) | 2024-10-10 |
Family
ID=87280217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2024/050413 Ceased WO2024209151A1 (fr) | 2023-04-05 | 2024-03-29 | PROCEDE DE FABRICATION D'ACIDES CARBOXYLIQUES a-ß INSATURES BIOSOURCES A PARTIR DE POLY(3-HYDROXYALCANOATE) |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4688721A1 (fr) |
| KR (1) | KR20250165614A (fr) |
| CN (1) | CN120882689A (fr) |
| FR (1) | FR3147566A1 (fr) |
| WO (1) | WO2024209151A1 (fr) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2208914A1 (fr) | 1972-11-30 | 1974-06-28 | Hoechst Ag | |
| FR2208916A1 (fr) | 1972-12-02 | 1974-06-28 | Kuraray Co | |
| US6482981B2 (en) | 2000-01-14 | 2002-11-19 | Nippon Shokubai Co., Ltd. | Method for producing acrylic acid |
| US6646161B1 (en) | 1997-09-12 | 2003-11-11 | Basf Aktiengesellschaft | Method for the fractional condensation of a hot gas mixture containing acrylic acid or methacrylic acid and having a high proportion of non-condensable constituents |
| US7179875B2 (en) | 2001-08-03 | 2007-02-20 | Basf Aktiengesellschaft | Method for producing water-absorbent resins |
| US7332624B2 (en) | 2002-07-16 | 2008-02-19 | Nippon Shokubai Co., Ltd. | Method for production of acrylic acid |
| US20120006673A1 (en) | 2009-03-19 | 2012-01-12 | Lg Chem, Ltd. | Dividing wall distillation column for producing high purity acrylic acid and fractional distillation method using the same |
| US20140018574A1 (en) | 2012-07-16 | 2014-01-16 | Basf Se | Process for preparing acrylic acid by a thermolysis of poly-3-hydroxypropionate catalyzed by at least one molecular active compound |
| JP5678663B2 (ja) * | 2008-12-17 | 2015-03-04 | 国立大学法人九州工業大学 | 2−ヒドロキシイソ酪酸ポリマーの製造方法及び解重合方法 |
| JP2015067567A (ja) | 2013-09-27 | 2015-04-13 | 株式会社日本触媒 | (メタ)アクリル酸の製造方法、及び、親水性樹脂の製造方法 |
| US20150183708A1 (en) * | 2012-06-08 | 2015-07-02 | Metabolix, Inc. | Renewable Acrylic Acid Production and Products Made Therefrom |
| US20150376152A1 (en) | 2013-02-13 | 2015-12-31 | Metabolix, Inc. | Process for Ultra Pure Chemical Production from Biobased Raw Starting Materials |
| WO2016039618A1 (fr) | 2014-09-12 | 2016-03-17 | Universiti Putra Malaysia | Production d'acide crotonique à base biologique |
| WO2024052284A1 (fr) * | 2022-09-06 | 2024-03-14 | Arkema France | Procede ameliore de fabrication d'acides carboxyliques alpha-beta insatures a partir de poly(3-hydroxyalcanoate) |
| WO2024052285A1 (fr) * | 2022-09-06 | 2024-03-14 | Arkema France | Procede de fabrication d'acides carboxyliques alpha-beta insatures biosources a partir de poly(3-hydroxyalcanoate) contenu dans de la biomasse |
-
2023
- 2023-04-05 FR FR2303388A patent/FR3147566A1/fr active Pending
-
2024
- 2024-03-29 CN CN202480021784.8A patent/CN120882689A/zh active Pending
- 2024-03-29 KR KR1020257033266A patent/KR20250165614A/ko active Pending
- 2024-03-29 EP EP24722060.1A patent/EP4688721A1/fr active Pending
- 2024-03-29 WO PCT/FR2024/050413 patent/WO2024209151A1/fr not_active Ceased
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2208914A1 (fr) | 1972-11-30 | 1974-06-28 | Hoechst Ag | |
| FR2208916A1 (fr) | 1972-12-02 | 1974-06-28 | Kuraray Co | |
| US6646161B1 (en) | 1997-09-12 | 2003-11-11 | Basf Aktiengesellschaft | Method for the fractional condensation of a hot gas mixture containing acrylic acid or methacrylic acid and having a high proportion of non-condensable constituents |
| US6482981B2 (en) | 2000-01-14 | 2002-11-19 | Nippon Shokubai Co., Ltd. | Method for producing acrylic acid |
| US7179875B2 (en) | 2001-08-03 | 2007-02-20 | Basf Aktiengesellschaft | Method for producing water-absorbent resins |
| US7332624B2 (en) | 2002-07-16 | 2008-02-19 | Nippon Shokubai Co., Ltd. | Method for production of acrylic acid |
| JP5678663B2 (ja) * | 2008-12-17 | 2015-03-04 | 国立大学法人九州工業大学 | 2−ヒドロキシイソ酪酸ポリマーの製造方法及び解重合方法 |
| US20120006673A1 (en) | 2009-03-19 | 2012-01-12 | Lg Chem, Ltd. | Dividing wall distillation column for producing high purity acrylic acid and fractional distillation method using the same |
| US20150183708A1 (en) * | 2012-06-08 | 2015-07-02 | Metabolix, Inc. | Renewable Acrylic Acid Production and Products Made Therefrom |
| US9850192B2 (en) | 2012-06-08 | 2017-12-26 | Cj Cheiljedang Corporation | Renewable acrylic acid production and products made therefrom |
| US20140018574A1 (en) | 2012-07-16 | 2014-01-16 | Basf Se | Process for preparing acrylic acid by a thermolysis of poly-3-hydroxypropionate catalyzed by at least one molecular active compound |
| US20150376152A1 (en) | 2013-02-13 | 2015-12-31 | Metabolix, Inc. | Process for Ultra Pure Chemical Production from Biobased Raw Starting Materials |
| JP2015067567A (ja) | 2013-09-27 | 2015-04-13 | 株式会社日本触媒 | (メタ)アクリル酸の製造方法、及び、親水性樹脂の製造方法 |
| WO2016039618A1 (fr) | 2014-09-12 | 2016-03-17 | Universiti Putra Malaysia | Production d'acide crotonique à base biologique |
| WO2024052284A1 (fr) * | 2022-09-06 | 2024-03-14 | Arkema France | Procede ameliore de fabrication d'acides carboxyliques alpha-beta insatures a partir de poly(3-hydroxyalcanoate) |
| WO2024052285A1 (fr) * | 2022-09-06 | 2024-03-14 | Arkema France | Procede de fabrication d'acides carboxyliques alpha-beta insatures biosources a partir de poly(3-hydroxyalcanoate) contenu dans de la biomasse |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20250165614A (ko) | 2025-11-26 |
| FR3147566A1 (fr) | 2024-10-11 |
| CN120882689A (zh) | 2025-10-31 |
| EP4688721A1 (fr) | 2026-02-11 |
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