WO2009130245A1 - Procédé d'optimisation de production de cétones ou aldehydes - Google Patents
Procédé d'optimisation de production de cétones ou aldehydes Download PDFInfo
- Publication number
- WO2009130245A1 WO2009130245A1 PCT/EP2009/054825 EP2009054825W WO2009130245A1 WO 2009130245 A1 WO2009130245 A1 WO 2009130245A1 EP 2009054825 W EP2009054825 W EP 2009054825W WO 2009130245 A1 WO2009130245 A1 WO 2009130245A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reactor
- membrane
- ketones
- aldehydes
- pervaporation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
- C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
- C07C45/72—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups
- C07C45/73—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups combined with hydrogenation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/36—Pervaporation; Membrane distillation; Liquid permeation
- B01D61/362—Pervaporation
- B01D61/3621—Pervaporation comprising multiple pervaporation steps
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/786—Separation; Purification; Stabilisation; Use of additives by membrane separation process, e.g. pervaporation, perstraction, reverse osmosis
Definitions
- the process according to the invention aims at optimizing the production of ketones or aldehydes obtained by the condensation followed by the dehydration and hydrogenation of the ketones or aldehydes in a reactor (3), by performing a membrane pervaporation step (6). ) for partially dehydrating an outgoing fraction of the reactor (5) and recycling the dehydrated concentrate (7) into said reactor (3).
- reaction mechanism for obtaining ketones or aldehyde of higher mass can be represented by elementary reactions; for example, for methyl isobutyl ketone (MIBK):
- W represents the catalyst mass
- P PH2 - represents the partial pressure of hydrogen
- Xacetone - represents the mole fraction of acetone
- x H 2o - represents the molar fraction of water.
- the reactor operates at a temperature between 50 and 150 ° C and a pressure between 500 and 2000 kPa, and the water concentration at the outlet of the reactor is of the order of 3 to 5% by weight.
- the output of the reactor conventionally feeds a set of columns, in which the MIBK is purified, separating it from the acetone, which returns to the reaction.
- the object of the present invention is to develop a new process for the production of ketones or aldehydes, for example MIBK, by reducing the concentration of water in the reaction medium by approximately 1% by weight, in order to obtain a displacement of the balance towards the product side and thus increased reaction efficiency, increased productivity, and energy saving.
- Such properties have been obtained by the use in a process for obtaining ketones or aldehydes obtained by condensation followed by the dehydration and hydrogenation of ketones or aldehydes in a reactor, of a loop allowing the recovery of a fraction.
- outgoing reactor comprising for example a mixture of water, acetone and MIBK in the case of the manufacture of MIBK, for transport it to a membrane pervaporation module so as to partially dehydrate it and then return it to said reactor.
- Membrane pervaporation processes are extremely efficient separation processes, generally without phase change and thus allowing a significant reduction in energy consumption, which use selective membranes, in which the feed flow is tangential to the membrane, or membranes.
- the present invention thus firstly relates to a process for the production of ketones or aldehydes obtained by the condensation followed by the dehydration and hydrogenation of ketones or aldehydes in a reactor, characterized in that the said process comprises at least one partial elimination step of water effected by at least one membrane pervaporation module, fed tangentially and installed laterally to said reactor and operating in a loop, so as to partially dehydrate an outgoing fraction of the reactor and to recycle the dehydrated concentrate into said reactor.
- the invention thus relates to a process for optimizing the production of ketones or aldehydes obtained by the condensation followed by the dehydration and hydrogenation of ketones or aldehydes in a reactor.
- the process of the invention it is possible to use different types of ketones or aldehyde in the reaction medium.
- the process is aimed in particular at obtaining ketones or aldehydes containing an even number of carbon atoms obtained by the condensation followed by the dehydration and hydrogenation of ketones or aldehydes.
- the condensation, dehydration and hydrogenation reaction of the ketones or aldehydes is conducted in a single reactor.
- Pervaporation is defined as an effective combination of permeation across membranes followed by evaporation. Pervaporation transport is usually described using the solution-diffusion model. The steps are: the preferential sorption of the components at the interface of the membrane in contact with the liquid feed, the differentiated diffusion through the membrane due to the concentration gradients, and finally the desorption in the form of steam, the other side of the membrane, maintained at low pressure. The first two stages correspond to the permselectivity of the membrane.
- pervaporation module means a vessel comprising one or more pervaporation membranes.
- the pervaporation modules generally comprise flat membranes, mounted on metal supports, forming sealed plates, spaced so as to have the reject flow on one side and the flow of permeate, such as steam, on the other; these plates communicate through collectors located opposite the supply for the rejected current.
- the pervaporation membranes are classified according to the nature of the separation to be studied. Hydrophilic membranes are particularly used to remove water from solutions that also contain organic compounds. These membranes are typically composed of polymers whose glass transition temperatures are higher than the ambient temperature. Polyvinyl alcohol is an example of a hydrophilic membrane material.
- the pervaporation preferably uses a membrane made of polymers having a glass transition temperature greater than ambient temperature.
- the membrane may consist of polyvinyl alcohol.
- the permeability of the membranes of the invention may be between 500 and 2000 ml / h. m 2 , preferably between 750 and 1500 ml / h. m 2 , in the context of the process according to the present invention.
- Patents US 4910344, CA 2196478, EP 496090, US 4935144, EP 496090, EP 381477 and US 5139677 are examples of embodiments which relate to the concentration or removal of water from aqueous organic solutions by pervaporation.
- the reactants such as ketones or aldehydes, in particular acetone (1) and hydrogen (2), are fed into the reactor (3).
- the outflow (4) of the reactor (3) is mainly conducted to purification systems (8), in particular distillation, and a small portion of this stream (5) is diverted to a membrane pervaporation module (6), or water is partially removed (11).
- the partially dehydrated stream (7) is returned to the reactor (3).
- the ketones or aldehydes produced and released from the purification systems (8) are recovered by means (10); while the unreacted ketones or aldehydes can be returned to the reactor (3).
- the current reflux ratio (5) supplied to the membrane pervaporation module (6) be between 20 and 40%, of the total outflow (4) leaving the reactor (3).
- the water concentration in the reaction mass of the reactor be maintained between 2 and 4% by weight.
- a reduction in the concentration of water in the reaction mass of between 0.5 and 2% by weight is obtained.
- the temperature in the membrane pervaporation modules can be between 70 and 90 ° C.
- the absolute pressure in the pervaporation modules can vary between 5 and 7 kPa. This pressure corresponds to the pressure of the permeate side of the membranes.
- the method of the invention can perfectly include several modules of membrane pervaporation, mounted in series, so that the solution is progressively dehydrated from the first to the last module. It is particularly preferred to use three modules mounted in series. For example, for temperatures between 100 and 150 ° C and pressures between 500 and 2000 kPa, a pump draws a side stream, the mass flow rate is between 20 and 50% of the output mass flow rate of the reactor, feeding an economizer and reducing the temperature of this current, between 100 and 150 ° C, to a supply temperature of the modules between 70 and 90 ° C.
- the feed weight pervaporation modules being composed of about 3 to 5% water, and 95 to 97% of organic components.
- the coolant in normal operation, is the partially dewatered discharge stream, at the outlet of the last module of the membrane assembly at a temperature between 70 and 90 ° C and, at start-up, the water of the cooling tower .
- the first pervaporation module is fed at a temperature between 70 and 90 ° C to begin the permeation of the mixture.
- the current rejected in the first module at a temperature below the ideal temperature feeds a heat exchanger, using steam as heating means to ensure that the power supply of the second module is also at a temperature between 70 and 90 0 C.
- the permeate mixture permeate continues in the second module and the rejected stream, also obtained at a temperature below the ideal temperature, is directed to the second heat exchanger, using the steam. as heating means to ensure that the supply of the third module is also at a temperature of approximately 70 to 90 ° C.
- the final stream dehydrated of approximately 1% by weight, and at a temperature between 70 and 80 ° C, supplies the economizer and cools the feed stream, as described above, being heated to a temperature of between 95 and 145 ° C before returning to the reactor.
- the permeation surface of each of the modules can vary between 20 and 150 m 2 , in particular between 40 and 60 m 2 .
- the membranes can be installed in a tank operating at an absolute pressure between 5 and 7 kPa.
- the indicated pressure can be obtained by a vacuum pump, installed at the outlet of the permeate current in the vapor state, requiring a condenser, supplied with a brine solution, to obtain water at low concentration. acetone or aldehyde.
- the installation of a second condenser after the vacuum pump is necessary to obtain a substantially pure acetone or aldehyde, which can be recycled in the process.
- the present invention also relates to a device, such as those conventionally used for the manufacture of ketones or aldehyde, comprising at least one reactor (3) and a means for conveying the outflow (4) of the reactor (3) for recovering ketones or aldehyde products, and means for conveying a side stream (5) of output from the reactor (3) to at least one membrane pervaporation module (6), and means for conveying the dehydrated concentrate resultant (7) in said reactor (3).
- a device such as those conventionally used for the manufacture of ketones or aldehyde, comprising at least one reactor (3) and a means for conveying the outflow (4) of the reactor (3) for recovering ketones or aldehyde products, and means for conveying a side stream (5) of output from the reactor (3) to at least one membrane pervaporation module (6), and means for conveying the dehydrated concentrate resultant (7) in said reactor (3).
- a permeate (outflow) comprising 74.5% by weight of water, 25.5% of acetone and 0% by weight of MIBK is obtained; with a permeability of 1000 ml / h. m 2 of the membrane in operation.
- the permeate pressure of the membrane is 6 kPa.
- Example 2 An experiment was carried out using 3 membrane pervaporation modules, mounted in series, so that the solution is progressively dehydrated from the first to the third module.
- Acetone and hydrogen are introduced into the reactor to obtain MIBK.
- a pump draws a lateral stream (5) whose mass flow rate is equal to 35% of the mass flow rate of the output stream of the reactor (3).
- the side stream (5) supplies an economizer, thereby reducing the temperature of this current to 80 ° C.
- the coolant in normal operation, is the rejected stream (7) of all the membranes, at a temperature of 75 ° C. At startup, the coolant is water in the cooling tower.
- the lateral stream (5) feeds the first pervaporation module to begin the permeation of the permeate mixture.
- the current rejected in the first module at a temperature of 72 ° C feeds a heat exchanger to ensure that the supply of the second module is also at 80 ° C.
- the permeate mixture permeate continues in the second module and the rejected stream, obtained at 74 ° C, goes to the second heat exchanger, to ensure that the feed of the third module is also done at 80 ° C.
- the heating of the streams discharged into the exchangers described is done by the saturated steam supply of each of the heat exchangers described.
- the final discharge stream (7) properly dehydrated, at a temperature of 75 ° C, feeds the economizer and cools the feed stream of the first module, as described above, being heated to a temperature between 95 and 145 ° C, before returning to the reactor.
- the three pervaporation modules provided for the execution of the invention consist of flat membranes mounted on metal supports, constituting sealed plates, spaced so as to have the reject flow on one side and the permeate flow, like steam, on the other, communicating through collectors, located opposite the supply for the rejected current.
- the membranes are installed in a tank operating at an absolute pressure of 6 kPa.
- the indicated pressure is obtained by means of a vacuum pump, installed at the outlet of the permeate current in the vapor state, requiring a condenser, supplied with a brine solution, making it possible to obtain water at low acetone concentration.
- a vacuum pump installed at the outlet of the permeate current in the vapor state, requiring a condenser, supplied with a brine solution, making it possible to obtain water at low acetone concentration.
- the installation of a second condenser after the vacuum pump is necessary to obtain a substantially pure acetone, which can be recycled in the process.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011505499A JP2011519831A (ja) | 2008-04-23 | 2009-04-22 | ケトン又はアルデヒドの製造を最適化するための方法 |
| CN2009801143137A CN102015605B (zh) | 2008-04-23 | 2009-04-22 | 酮或醛的生产的优化方法 |
| BRPI0907352-3A BRPI0907352A2 (pt) | 2008-04-23 | 2009-04-22 | "processo de produção de cetonas ou aldeídos e dispositivo" |
| ES09735913.7T ES2647315T3 (es) | 2008-04-23 | 2009-04-22 | Procedimiento de optimización de producción de cetonas o aldehídos |
| EP09735913.7A EP2274263B1 (fr) | 2008-04-23 | 2009-04-22 | Procédé d'optimisation de production de cétones ou aldehydes |
| US12/989,204 US8455696B2 (en) | 2008-04-23 | 2009-04-22 | Optimized production of ketones/aldehydes |
| ZA2010/07445A ZA201007445B (en) | 2008-04-23 | 2010-10-19 | Process for optimizing the production of ketones or aldehydes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0802271A FR2930550B1 (fr) | 2008-04-23 | 2008-04-23 | Procede d'optimisation de production de cetones ou aldehydes |
| FR0802271 | 2008-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009130245A1 true WO2009130245A1 (fr) | 2009-10-29 |
Family
ID=40151059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2009/054825 Ceased WO2009130245A1 (fr) | 2008-04-23 | 2009-04-22 | Procédé d'optimisation de production de cétones ou aldehydes |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US8455696B2 (fr) |
| EP (1) | EP2274263B1 (fr) |
| JP (1) | JP2011519831A (fr) |
| CN (1) | CN102015605B (fr) |
| BR (1) | BRPI0907352A2 (fr) |
| ES (1) | ES2647315T3 (fr) |
| FR (1) | FR2930550B1 (fr) |
| WO (1) | WO2009130245A1 (fr) |
| ZA (1) | ZA201007445B (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRM20100319A1 (it) * | 2010-06-11 | 2011-12-12 | Univ Bologna Alma Mater | Produzione di aldeidi per ossidazione in ambiente acquoso con recupero selettivo del prodotto mediante pervaporazione |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8101805B2 (en) * | 2011-04-20 | 2012-01-24 | King Abdulaziz City for Science and Technology (KACST) | Low pressure one-step gas-phase process for production of methyl isobutyl ketone |
| EP2829531A1 (fr) * | 2013-07-24 | 2015-01-28 | Evonik Industries AG | Procédé de régulation de la teneur en eau dans un procédé continu de fabrication de méthacroléine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4910344A (en) | 1989-02-01 | 1990-03-20 | Texaco Inc. | Treatment of compositions containing water and organic oxygenates |
| US4935144A (en) | 1987-09-17 | 1990-06-19 | Texaco Inc. | Concentration of water-ketone compositions |
| EP0496090A2 (fr) | 1991-01-15 | 1992-07-29 | BASF Aktiengesellschaft | Procédé pour la séparation d'un mélange d'eau, de méthyléthylcétone et de l'éthylèneglycol-mono-n-butylether dans de l'eau et de méthyléthylcétone avec l'ethylèneglycol-mono-n-butyléther |
| US5139677A (en) | 1991-11-18 | 1992-08-18 | Texaco Inc. | Membrane separation method |
| CA2196478A1 (fr) | 1997-01-31 | 1998-07-31 | Takeshi Matsuura | Composition de membranes et methode de preparation |
| US6960694B2 (en) * | 2003-07-01 | 2005-11-01 | Eastman Chemical Company | Processes for preparing β-hydroxy-ketones and α,β-unsaturated ketones |
-
2008
- 2008-04-23 FR FR0802271A patent/FR2930550B1/fr not_active Expired - Fee Related
-
2009
- 2009-04-22 CN CN2009801143137A patent/CN102015605B/zh not_active Expired - Fee Related
- 2009-04-22 US US12/989,204 patent/US8455696B2/en not_active Expired - Fee Related
- 2009-04-22 EP EP09735913.7A patent/EP2274263B1/fr not_active Not-in-force
- 2009-04-22 BR BRPI0907352-3A patent/BRPI0907352A2/pt not_active IP Right Cessation
- 2009-04-22 JP JP2011505499A patent/JP2011519831A/ja not_active Abandoned
- 2009-04-22 WO PCT/EP2009/054825 patent/WO2009130245A1/fr not_active Ceased
- 2009-04-22 ES ES09735913.7T patent/ES2647315T3/es active Active
-
2010
- 2010-10-19 ZA ZA2010/07445A patent/ZA201007445B/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4935144A (en) | 1987-09-17 | 1990-06-19 | Texaco Inc. | Concentration of water-ketone compositions |
| US4910344A (en) | 1989-02-01 | 1990-03-20 | Texaco Inc. | Treatment of compositions containing water and organic oxygenates |
| EP0381477A2 (fr) | 1989-02-01 | 1990-08-08 | Texaco Development Corporation | Concentration d'une composition eau-cétone |
| EP0496090A2 (fr) | 1991-01-15 | 1992-07-29 | BASF Aktiengesellschaft | Procédé pour la séparation d'un mélange d'eau, de méthyléthylcétone et de l'éthylèneglycol-mono-n-butylether dans de l'eau et de méthyléthylcétone avec l'ethylèneglycol-mono-n-butyléther |
| US5139677A (en) | 1991-11-18 | 1992-08-18 | Texaco Inc. | Membrane separation method |
| CA2196478A1 (fr) | 1997-01-31 | 1998-07-31 | Takeshi Matsuura | Composition de membranes et methode de preparation |
| US6960694B2 (en) * | 2003-07-01 | 2005-11-01 | Eastman Chemical Company | Processes for preparing β-hydroxy-ketones and α,β-unsaturated ketones |
Non-Patent Citations (1)
| Title |
|---|
| STAUDT-BICKEL C ET AL: "Integration of pervaporation for the removal of water in the production process of methylisobutylketone", JOURNAL OF MEMBRANE SCIENCE, ELSEVIER SCIENTIFIC PUBL.COMPANY. AMSTERDAM, NL, vol. 111, no. 1, 6 March 1996 (1996-03-06), pages 135 - 141, XP004041721, ISSN: 0376-7388 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ITRM20100319A1 (it) * | 2010-06-11 | 2011-12-12 | Univ Bologna Alma Mater | Produzione di aldeidi per ossidazione in ambiente acquoso con recupero selettivo del prodotto mediante pervaporazione |
| WO2011154925A1 (fr) | 2010-06-11 | 2011-12-15 | Alma Mater Studiorum Universita Di Bologna | Production d'aldéhydes par oxydation en milieu aqueux avec récupération sélective du produit au moyen de la pervaporation |
| US8884069B2 (en) | 2010-06-11 | 2014-11-11 | Alma Mater Studiorum Universita Di Bologna | Production of aldehydes by oxidation in aqueous medium with selective recovery of the product by means of pervaporation |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2930550B1 (fr) | 2010-04-23 |
| ES2647315T3 (es) | 2017-12-20 |
| BRPI0907352A2 (pt) | 2015-07-28 |
| US20110040128A1 (en) | 2011-02-17 |
| EP2274263B1 (fr) | 2017-09-27 |
| JP2011519831A (ja) | 2011-07-14 |
| ZA201007445B (en) | 2011-06-29 |
| CN102015605B (zh) | 2013-08-21 |
| FR2930550A1 (fr) | 2009-10-30 |
| CN102015605A (zh) | 2011-04-13 |
| US8455696B2 (en) | 2013-06-04 |
| EP2274263A1 (fr) | 2011-01-19 |
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