WO2023247885A1 - Procede de valorisation continu de sous-produits lourds issus de la fabrication d'acide acrylique - Google Patents
Procede de valorisation continu de sous-produits lourds issus de la fabrication d'acide acrylique Download PDFInfo
- Publication number
- WO2023247885A1 WO2023247885A1 PCT/FR2023/050913 FR2023050913W WO2023247885A1 WO 2023247885 A1 WO2023247885 A1 WO 2023247885A1 FR 2023050913 W FR2023050913 W FR 2023050913W WO 2023247885 A1 WO2023247885 A1 WO 2023247885A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- heavy
- acrylic acid
- cracking
- products
- water
- 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
- 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
-
- 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
-
- 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
Definitions
- the present invention relates to a process for the regeneration, by thermal cracking, of acrylic acid (AA), from heavy by-products (residues called LAA) resulting from an AA production unit, with a view to their recycling in the acrylic acid production workshop.
- This process consists of two stages operating continuously while improving the current performance of the cracking installations.
- 3-acryloxypropionic acid also called "dimeric acrylic acid” or "AA dimer”;
- the rectification plates of the distillation column cause the effective separation of the polymerization inhibitors entrained in the gas mixture, which flow back towards the bottom of the column, and therefore, it is necessary to introduce fresh polymerization inhibitors in column head, to avoid the formation of polymers in the upper part of the column. Therefore, we must separate the reaction stages, carried out under higher pressure, and distillation stages, carried out under reduced pressure.
- the installation for carrying out the process must therefore be equipped with a reactor and a condenser at the top, operated at the same pressure, and with a distillation column operated at reduced pressure, supplied with the condensed product, and comprising a boiler at the bottom, and at the top a condenser, reflux equipment and a supply of inhibitors. This device is complicated and expensive.
- the thermal cracking reaction takes place at atmospheric pressure or under light pressure (maximum 0.2 MPa).
- the bottom flow of the reactor (residue) obtained at the end of the thermal cracking operation has a dynamic viscosity less than 1 Pa.s, measured at a temperature of 100°C for example using a Brookfield “CAP 1000+” cone-plane type viscometer.
- the present invention makes it possible to overcome the disadvantages of the state of the art. It makes it possible to recover the maximum amount of AA per cracking operation, while managing the viscosity of the residue formed without being dependent on another production unit. This is accomplished through the combination of a hydrolysis step of heavy by-products coming from an acrylic acid production unit, and a thermal cracking step of the hydrolyzed products.
- Figure 1 schematically represents an embodiment of an installation according to the invention. DESCRIPTION OF MODES OF CARRYING OUT THE INVENTION
- hydrolyzer refers to a reactor in which the hydrolysis reaction of the mixture of water and heavy AA can take place. This reactor can be heated and hold pressure. This can be a conventional stirred type reactor, a piston reactor with or without an internal premixer or in a heat exchanger.
- the invention is based on a thermal cracking process, coupled with a hydrolysis operation carried out beforehand on the heavy by-products from an AA production unit.
- Hydrolysis in continuous mode is carried out under a pressure ranging from 0.1 to 2 MPa.
- the efficiency of the regeneration (expressed in the form of the cracking yield) essentially depends on: a/ the parameters for the hydrolysis: the temperature and pressure, the hydrolysis residence time and the Water/Heavy AA ratio, And
- TRU or useful recovery rate this is the quantity of acrylic acid recovered after cracking reduced to the quantity of heavy AA which feeds the cracker:
- TRU AA mass recovered / Heavy AA cracker feed the cracking rate or yield: this is the quantity of acrylic acid recovered after cracking reduced to the sum of the recoverable compounds in the cracker feed (acrylic acid (AA) , acrylic acid dimers (AA2) and hydroxypropionic acid (AHP)).
- the flow containing said heavy by-products coming from acrylic acid production workshop (LAA) and water are introduced together or separately in continuous mode into the RI reactor.
- the LAA stream is rich in heavy Michael addition compounds generated during the acrylic acid synthesis and purification steps, and also contains other heavy compounds accumulated during the synthesis and purification processes, particularly inhibitors. polymerization.
- the mixture (1) containing the heavy acrylic acid compounds and water is heated to the required temperature to carry out the hydrolysis of the Michael addition derivatives into lighter compounds.
- the flow (2) leaving the hydrolyser RI is then introduced continuously into a second reactor R2 where it is heated to the temperature required to crack the Michael addition derivatives into lighter compounds which are extracted in the form of a gas mixture (3) at the reactor head.
- This stream of vapor rich in acrylic acid and containing some heavy compounds including inhibitors in low concentration, is advantageously recycled in the process for producing acrylic acid, either directly in vapor form, or after total condensation in an El flux condenser ( 4).
- At least one polymerization inhibitor is introduced at the level of the EL condenser.
- These inhibitors are chosen from polymerization inhibitors known to those skilled in the art: phenolic derivatives such as hydroquinone and its derivatives such as hydroquinone.
- manganese salts such as manganese acetate
- salts of thiocarbamic or dithiocarbamic acid such as thio
- the residue flow recovered at the bottom of the reactor (5) is cooled, then eliminated in the form of a liquid of moderate viscosity, so that it can be transported without difficulty by pump, for example to a storage or processing unit. incineration.
- the assembly consists of a piston reactor with a total volume of 16.3 cm 3 , placed in an oil bath heated to 150°C. Hydrolysis is carried out under pressure of 0.4 MPa, for a residence time of one hour. The hydrolyzed flow is introduced continuously into a glass reactor with a total volume of 500 cm 3 , heated by recirculation of oil through its double wall, equipped with a side outlet for the outlet of the residue, ensuring a useful volume of liquid constant contained in the reactor of 156.6 cm 3 .
- the reactor is equipped with a stirrer, a temperature probe immersed in the liquid phase, a vertical pipe in the upper part, for the extraction of vapors, and a condenser.
- the liquid (distillate) is collected in a receiving flask and analyzed.
- the flow of heavy AA is directly introduced continuously into a glass reactor with a total volume of 500 cm 3 , heated by recirculation of oil through its double wall, equipped with a side outlet for the outlet of the residue , ensuring a constant useful volume of liquid contained in the reactor of 156.6 cm 3 .
- the reactor is equipped with a stirrer, a temperature probe immersed in the liquid phase, a vertical pipe in the upper part, for the extraction of vapors, and a condenser.
- the liquid (distillate) is collected in a receiving flask and analyzed.
- the test is stopped due to a blockage of the residue outlet after 32 hours.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP23744524.2A EP4543837A1 (fr) | 2022-06-24 | 2023-06-20 | Procede de valorisation continu de sous-produits lourds issus de la fabrication d'acide acrylique |
| JP2024571823A JP2025519426A (ja) | 2022-06-24 | 2023-06-20 | アクリル酸生成からの重質副生成物を連続的にグレードアップする方法 |
| KR1020247042657A KR20250027518A (ko) | 2022-06-24 | 2023-06-20 | 아크릴산 생성으로부터 중질 부산물의 연속적인 업그레이드를 위한 공정 |
| CN202380049534.0A CN119421867A (zh) | 2022-06-24 | 2023-06-20 | 来自丙烯酸生产的重质副产物的连续提质工艺 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2206330 | 2022-06-24 | ||
| FR2206330A FR3137091B1 (fr) | 2022-06-24 | 2022-06-24 | Procede de valorisation continu de sous-produits lourds issus de la fabrication d’acide acrylique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023247885A1 true WO2023247885A1 (fr) | 2023-12-28 |
Family
ID=83188792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2023/050913 Ceased WO2023247885A1 (fr) | 2022-06-24 | 2023-06-20 | Procede de valorisation continu de sous-produits lourds issus de la fabrication d'acide acrylique |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP4543837A1 (fr) |
| JP (1) | JP2025519426A (fr) |
| KR (1) | KR20250027518A (fr) |
| CN (1) | CN119421867A (fr) |
| FR (1) | FR3137091B1 (fr) |
| WO (1) | WO2023247885A1 (fr) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2415092A1 (fr) * | 1978-01-19 | 1979-08-17 | Nippon Catalytic Chem Ind | Procede pour valoriser les oligomeres de l'acide acrylique obtenus a la preparation de ce compose en recuperant simultanement l'hydroquinone utilisee comme inhibiteur de polymerisation |
| EP0717031A1 (fr) | 1994-12-12 | 1996-06-19 | Elf Atochem S.A. | Procédé de récupération des produits nobles légers contenus dans les résidus de distillation des procédés de fabrication de l'acide acrylique et de ses esters |
| EP0779268A1 (fr) * | 1995-12-15 | 1997-06-18 | Rohm And Haas Company | Procédé de production d'acrylate d'alkyle |
| US6414183B1 (en) | 1999-04-05 | 2002-07-02 | Nippon Shokubai Co., Ltd. | Method for handling waste oil |
| EP3255030A1 (fr) | 2015-02-05 | 2017-12-13 | Nippon Shokubai Co., Ltd. | Procédé de production d'acide acrylique |
| WO2021224044A1 (fr) | 2020-05-04 | 2021-11-11 | Basf Se | Procédé de décomposition d'adduits de michael contenus dans un fluide f et formés au cours de la préparation d'acide acrylique |
-
2022
- 2022-06-24 FR FR2206330A patent/FR3137091B1/fr active Active
-
2023
- 2023-06-20 WO PCT/FR2023/050913 patent/WO2023247885A1/fr not_active Ceased
- 2023-06-20 CN CN202380049534.0A patent/CN119421867A/zh active Pending
- 2023-06-20 JP JP2024571823A patent/JP2025519426A/ja active Pending
- 2023-06-20 KR KR1020247042657A patent/KR20250027518A/ko active Pending
- 2023-06-20 EP EP23744524.2A patent/EP4543837A1/fr active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2415092A1 (fr) * | 1978-01-19 | 1979-08-17 | Nippon Catalytic Chem Ind | Procede pour valoriser les oligomeres de l'acide acrylique obtenus a la preparation de ce compose en recuperant simultanement l'hydroquinone utilisee comme inhibiteur de polymerisation |
| EP0717031A1 (fr) | 1994-12-12 | 1996-06-19 | Elf Atochem S.A. | Procédé de récupération des produits nobles légers contenus dans les résidus de distillation des procédés de fabrication de l'acide acrylique et de ses esters |
| EP0779268A1 (fr) * | 1995-12-15 | 1997-06-18 | Rohm And Haas Company | Procédé de production d'acrylate d'alkyle |
| US6414183B1 (en) | 1999-04-05 | 2002-07-02 | Nippon Shokubai Co., Ltd. | Method for handling waste oil |
| EP3255030A1 (fr) | 2015-02-05 | 2017-12-13 | Nippon Shokubai Co., Ltd. | Procédé de production d'acide acrylique |
| WO2021224044A1 (fr) | 2020-05-04 | 2021-11-11 | Basf Se | Procédé de décomposition d'adduits de michael contenus dans un fluide f et formés au cours de la préparation d'acide acrylique |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2025519426A (ja) | 2025-06-26 |
| EP4543837A1 (fr) | 2025-04-30 |
| FR3137091A1 (fr) | 2023-12-29 |
| FR3137091B1 (fr) | 2024-05-10 |
| KR20250027518A (ko) | 2025-02-26 |
| CN119421867A (zh) | 2025-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3268345B1 (fr) | Procede ameliore de production d'acide (meth)acrylique | |
| EP3606903B1 (fr) | Procede de purification d'acide (meth)acrylique incluant une colonne de distillation a paroi separatrice. | |
| EP4594289A1 (fr) | Procede de fabrication d'acide (meth)acrylique | |
| EP3027586B1 (fr) | Procédé de production en continu d'acrylates légers par estérification d'un acide acrylique de grade ester brut | |
| EP4139273B1 (fr) | Procede de valorisation de lourds d'acide acrylique et d'esters dudit acide par craquage thermique avec condensation partielle | |
| WO2023247885A1 (fr) | Procede de valorisation continu de sous-produits lourds issus de la fabrication d'acide acrylique | |
| EP4543836A1 (fr) | Procede de valorisation en batch de sous-produits lourds issus de la fabrication d'acide acrylique | |
| WO2023247887A1 (fr) | Procede de valorisation de sous-produits lourds issus de la fabrication d'acide acrylique | |
| EP4543838A1 (fr) | Procede de valorisation de sous-produits lourds issus de la fabrication d'acide acrylique | |
| WO2021205090A1 (fr) | Procede de purification d'acide (meth)acrylique | |
| WO2025238323A1 (fr) | Procede de purification d'acide (meth)acrylique | |
| BE706281A (fr) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23744524 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2024571823 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380049534.0 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023744524 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023744524 Country of ref document: EP Effective date: 20250124 |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112024025176 Country of ref document: BR |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380049534.0 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 1020247042657 Country of ref document: KR |
|
| REG | Reference to national code |
Ref country code: BR Ref legal event code: B01E Ref document number: 112024025176 Country of ref document: BR Free format text: APRESENTE NOVAS FOLHAS DO RELATORIO DESCRITIVO E RESUMO ADAPTADAS AOS ARTS. 26 E 40 DA PORTARIA NO 14/2024, UMA VEZ QUE O CONTEUDO ENVIADO ENCONTRA-SE FORA DA NORMA. OS DOCUMENTOS DEVEM SER INICIADOS PELO TITULO CENTRALIZADO SEM O USO DE PALAVRAS ADICIONAIS (RELATORIO DESCRITIVO DE:, PATENTE DE INVENCAO:). A EXIGENCIA DEVE SER RESPONDIDA EM ATE 60 (SESSENTA) DIAS DE SUA PUBLICACAO E DEVE SER REALIZADA POR MEIO DA PETICAO GRU CODIGO DE SERVICO 207. |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023744524 Country of ref document: EP |
|
| ENP | Entry into the national phase |
Ref document number: 112024025176 Country of ref document: BR Kind code of ref document: A2 Effective date: 20241202 |
