JP7426390B2 - アクリル酸製品製造におけるホルムアルデヒド含有水溶液の精製及び精製された水溶液の使用 - Google Patents
アクリル酸製品製造におけるホルムアルデヒド含有水溶液の精製及び精製された水溶液の使用 Download PDFInfo
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- JP7426390B2 JP7426390B2 JP2021530863A JP2021530863A JP7426390B2 JP 7426390 B2 JP7426390 B2 JP 7426390B2 JP 2021530863 A JP2021530863 A JP 2021530863A JP 2021530863 A JP2021530863 A JP 2021530863A JP 7426390 B2 JP7426390 B2 JP 7426390B2
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- formaldehyde
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- acetic acid
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- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 title claims description 250
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 title claims description 57
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 title claims description 57
- 239000007864 aqueous solution Substances 0.000 title claims description 23
- 238000000746 purification Methods 0.000 title description 12
- 238000004519 manufacturing process Methods 0.000 title description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 140
- 238000000034 method Methods 0.000 claims description 71
- 238000004821 distillation Methods 0.000 claims description 61
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 230000015572 biosynthetic process Effects 0.000 claims description 26
- 239000008346 aqueous phase Substances 0.000 claims description 25
- 238000003786 synthesis reaction Methods 0.000 claims description 24
- 238000006243 chemical reaction Methods 0.000 claims description 20
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 20
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 20
- 239000001294 propane Substances 0.000 claims description 19
- 239000002904 solvent Substances 0.000 claims description 19
- 230000003647 oxidation Effects 0.000 claims description 16
- 238000007254 oxidation reaction Methods 0.000 claims description 16
- 230000003197 catalytic effect Effects 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 6
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims description 6
- 238000010533 azeotropic distillation Methods 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 5
- 235000019256 formaldehyde Nutrition 0.000 description 79
- 229960004279 formaldehyde Drugs 0.000 description 75
- 235000011054 acetic acid Nutrition 0.000 description 42
- 239000007789 gas Substances 0.000 description 13
- 239000000203 mixture Substances 0.000 description 13
- 150000001875 compounds Chemical class 0.000 description 10
- 239000012535 impurity Substances 0.000 description 9
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 8
- 239000012071 phase Substances 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000010412 perfusion Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000006227 byproduct Substances 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 2
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000013529 heat transfer fluid Substances 0.000 description 2
- 238000010348 incorporation Methods 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- CKFGINPQOCXMAZ-UHFFFAOYSA-N methanediol Chemical compound OCO CKFGINPQOCXMAZ-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- WVVOBOZHTQJXPB-UHFFFAOYSA-N N-anilino-N-nitronitramide Chemical compound [N+](=O)([O-])N(NC1=CC=CC=C1)[N+](=O)[O-] WVVOBOZHTQJXPB-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- DLDJFQGPPSQZKI-UHFFFAOYSA-N but-2-yne-1,4-diol Chemical compound OCC#CCO DLDJFQGPPSQZKI-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000895 extractive distillation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropanol acetate Natural products CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 description 1
- 229940011051 isopropyl acetate Drugs 0.000 description 1
- GWYFCOCPABKNJV-UHFFFAOYSA-N isovaleric acid Chemical compound CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 description 1
- 238000004811 liquid chromatography Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000622 liquid--liquid extraction Methods 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000000066 reactive distillation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000001577 simple distillation Methods 0.000 description 1
- HRZFUMHJMZEROT-UHFFFAOYSA-L sodium disulfite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O HRZFUMHJMZEROT-UHFFFAOYSA-L 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- 235000010262 sodium metabisulphite Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
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- C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/141—Fractional distillation or use of a fractionation or rectification column where at least one distillation column contains at least one dividing wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
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- C07C51/23—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of oxygen-containing groups to carboxyl groups
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- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/25—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
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Description
ホルムアルデヒドは、化学産業における原材料として使用され、したがって、通常は、残留のホルムアルデヒドを含む廃液を、廃棄前に処理する必要がある。他の産業プロセスは、ホルムアルデヒドを副産物として生じる。一例として、プロピレンの酸化によるアクリル酸の合成は、ホルムアルデヒドを含有する水相を生じ、これを廃棄する前に又はこのプロセス内で再生利用するために、精製することが望ましい。
本発明の目的は、ホルムアルデヒドを含む水溶液から蒸留によってホルムアルデヒドを除去するプロセスであって、この蒸留は、酢酸の存在下で実施されることを特徴とする。
ここで、本発明は、以下の説明において、より詳細にかつ非限定の様式で説明される。
- 通常使用される温度及び圧力の条件下で濃縮不可能な軽化合物:本質的に、プロピレン、プロパン、窒素、未変換の酸素、最終酸化によって少量形成される一酸化炭素及び二酸化炭素;
- 濃縮可能な軽化合物:特に、水、軽アルデヒド、例えば未変換のアクロレイン、ホルムアルデヒド及びアセトアルデヒド、ギ酸、酢酸、プロピオン酸;
- 重化合物:本質的に、フルフラルデヒド、ベンズアルデヒド、マレイン酸及び無水物、安息香酸。
10理論段と等しい5mのPallリングを含む200mm径の蒸留カラムを含む組み立て品を、使用した。
- カラム上部にて取り除かれる流量に対するカラムに戻る液体流量によって表される、0.5~5の間である潅流速度、及び/又は
- カラム上部にて取り除かれる流量とカラムへの供給流量によって表される、10~30%の間の質量百分率。
- 1.5質量%のホルムアルデヒドを含む水(比較例)
- 1.5質量%のホルムアルデヒド及び6質量%の酢酸を含む水(本発明の例)。
Claims (11)
- ホルムアルデヒドを含有する水溶液から蒸留によってホルムアルデヒドを除去するプロセスであって、前記蒸留が、酢酸の存在下で実施され、ホルムアルデヒドを含有する前記水溶液が、プロピレン及び/又はプロパンの触媒酸化によるアクリル酸合成のためのプロセスに由来し、処理後の水相が、前記アクリル酸合成のためのプロセスに再生利用され、前記水相が蒸留カラムの底部で回収されるとともに前記ホルムアルデヒドがカラム上部にて回収される、プロセス。
- 前記水溶液が、0.1~5質量%のホルムアルデヒドを含む、請求項1に記載のプロセス。
- 前記水溶液が、1~10質量%の酢酸を含む、請求項1又は2に記載のプロセス。
- 前記水溶液中の酢酸対ホルムアルデヒドの質量比が、1~5である、請求項1~3のいずれか1項に記載のプロセス。
- 前記蒸留が、上部取付上部コンデンサーを備えた蒸留カラムを用いて実施される、請求項1~4のいずれか1項に記載のプロセス。
- 前記蒸留が、上部取付機械的蒸気コンプレッサーを備えた蒸留カラムを用いて実施される、請求項1~5のいずれか1項に記載のプロセス。
- 前記酢酸が、前記アクリル酸合成のためのプロセスにおいて生成される、酢酸を含む蒸気として加えられる、請求項1~6のいずれか1項に記載のプロセス。
- 前記アクリル酸合成のためのプロセスが、溶媒を用いた液体抽出による水分離を含む、アクリル酸を精製するためのプロセスを含む、請求項1~7のいずれか1項に記載のプロセス。
- 前記アクリル酸合成のためのプロセスが、溶媒を用いた共沸蒸留による水分離を含む、アクリル酸を精製するためのプロセスを含む、請求項1~7のいずれか1項に記載のプロセス。
- 0.1~5%のホルムアルデヒドを含む水相を生成し、前記水相中の前記ホルムアルデヒドが蒸留カラムの上部で取り除かれる、少なくとも1つの工程を含む、プロピレン及び/又はプロパンの触媒酸化によってアクリル酸を合成するためのプロセスであって、前記蒸留が、1~5の酢酸/ホルムアルデヒド質量比での酢酸の存在下で実施され、カラムの底部で得られた精製された水相が、前記プロセスの反応セクションにおける蒸気源として再生利用される、プロセス。
- 蒸留処理が、隔壁蒸留カラムを用いて実施される、請求項10に記載のプロセス。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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FR1872059A FR3089222A1 (fr) | 2018-11-29 | 2018-11-29 | Purification de solutions aqueuses contenant du formaldehyde, et utilisation de la solution purifiee dans un procede de production d’acide acrylique |
FR1872059 | 2018-11-29 | ||
PCT/FR2019/052840 WO2020109739A1 (fr) | 2018-11-29 | 2019-11-29 | Purification de solutions aqueuses contenant du formaldehyde, et utilisation de la solution purifiee dans un procede de production d'acide acrylique |
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JP2022508281A JP2022508281A (ja) | 2022-01-19 |
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US (1) | US20210395107A1 (ja) |
EP (1) | EP3887349A1 (ja) |
JP (1) | JP7426390B2 (ja) |
KR (1) | KR20210096174A (ja) |
CN (1) | CN113166019B (ja) |
BR (1) | BR112021008859A2 (ja) |
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WO (1) | WO2020109739A1 (ja) |
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JP2009286775A (ja) | 2008-05-30 | 2009-12-10 | Rohm & Haas Co | 精製(メタ)アクリル酸の製造方法 |
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DE2104506C3 (de) * | 1971-02-01 | 1974-07-18 | Knapsack Ag, 5033 Huerth-Knapsack | Verfahren zur Abtrennung von Acrylsäure und Essigsäure aus wäßriger Rohacrylsäure |
BE788550A (fr) * | 1971-09-11 | 1973-03-08 | Knapsack Ag | Procede pour separer le formaldehyde de melanges acide acetique/formaldehyde/eau |
JPS5942340A (ja) * | 1982-09-01 | 1984-03-08 | Nippon Shokubai Kagaku Kogyo Co Ltd | アクリル酸の製造方法 |
FR2736912B1 (fr) * | 1995-07-18 | 1997-08-22 | Atochem Elf Sa | Procede de purification de l'acide acrylique obtenu par oxydation catalytique du propylene |
US5545336A (en) | 1995-10-03 | 1996-08-13 | Wheeler; Steven P. | Method of neutralizing aldehyde-containing waste waters and the like |
FR2756280B1 (fr) * | 1996-11-25 | 1998-12-24 | Atochem Elf Sa | Purification de l'acide acrylique obtenu par oxydation catalytique du propylene |
FR2798382B1 (fr) * | 1999-09-14 | 2001-10-26 | Atofina | Procede de purification de l'acide acrylique obtenu par oxydation du propylene et/ou de l'acroleine |
FR2935971B1 (fr) * | 2008-09-16 | 2010-11-19 | Arkema France | Acide bio-acrylique de grade polymere et son procede de fabrication a partir de glycerol. |
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2018
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- 2019-11-29 WO PCT/FR2019/052840 patent/WO2020109739A1/fr unknown
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- 2019-11-29 JP JP2021530863A patent/JP7426390B2/ja active Active
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JP2009286775A (ja) | 2008-05-30 | 2009-12-10 | Rohm & Haas Co | 精製(メタ)アクリル酸の製造方法 |
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FR3089222A1 (fr) | 2020-06-05 |
CN113166019B (zh) | 2024-04-09 |
JP2022508281A (ja) | 2022-01-19 |
WO2020109739A1 (fr) | 2020-06-04 |
BR112021008859A2 (pt) | 2021-08-31 |
EP3887349A1 (fr) | 2021-10-06 |
KR20210096174A (ko) | 2021-08-04 |
CN113166019A (zh) | 2021-07-23 |
US20210395107A1 (en) | 2021-12-23 |
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