CN104402670A - Clean production method of diketene - Google Patents
Clean production method of diketene Download PDFInfo
- Publication number
- CN104402670A CN104402670A CN201410501478.2A CN201410501478A CN104402670A CN 104402670 A CN104402670 A CN 104402670A CN 201410501478 A CN201410501478 A CN 201410501478A CN 104402670 A CN104402670 A CN 104402670A
- Authority
- CN
- China
- Prior art keywords
- acetic acid
- residue
- workshop section
- hydrolysis
- cracking
- 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.)
- Pending
Links
- WASQWSOJHCZDFK-UHFFFAOYSA-N diketene Chemical compound C=C1CC(=O)O1 WASQWSOJHCZDFK-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title abstract description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims abstract description 127
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000007062 hydrolysis Effects 0.000 claims abstract description 25
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 25
- 238000005336 cracking Methods 0.000 claims abstract description 24
- 238000002360 preparation method Methods 0.000 claims abstract description 9
- 239000002912 waste gas Substances 0.000 claims abstract description 7
- 238000009833 condensation Methods 0.000 claims abstract description 5
- 230000005494 condensation Effects 0.000 claims abstract description 5
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims abstract description 5
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000011084 recovery Methods 0.000 claims description 10
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 claims description 8
- 239000012141 concentrate Substances 0.000 claims description 8
- 239000003085 diluting agent Substances 0.000 claims description 8
- 239000002351 wastewater Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000006166 lysate Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000000446 fuel Substances 0.000 abstract description 2
- 238000004821 distillation Methods 0.000 abstract 1
- 238000000605 extraction Methods 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 9
- 239000000047 product Substances 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- CCGKOQOJPYTBIH-UHFFFAOYSA-N ethenone Chemical compound C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 description 5
- 235000011089 carbon dioxide Nutrition 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- -1 acetic acid aceticanhydride acetone carbonic acid Chemical compound 0.000 description 3
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 3
- 239000012043 crude product Substances 0.000 description 3
- UOGBWVLAMKCFBK-UHFFFAOYSA-N acetyl acetate;hydrate Chemical compound O.CC(=O)OC(C)=O UOGBWVLAMKCFBK-UHFFFAOYSA-N 0.000 description 2
- 150000008065 acid anhydrides Chemical class 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- HTZWBJTVKWGSHY-UHFFFAOYSA-N C=C=O.CC(=O)OC(C)=O Chemical compound C=C=O.CC(=O)OC(C)=O HTZWBJTVKWGSHY-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- PQLVXDKIJBQVDF-UHFFFAOYSA-N acetic acid;hydrate Chemical compound O.CC(O)=O PQLVXDKIJBQVDF-UHFFFAOYSA-N 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000010909 process residue Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
- C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/083—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid anhydrides
- C07C51/087—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid anhydrides by hydrolysis
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/56—Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D305/00—Heterocyclic compounds containing four-membered rings having one oxygen atom as the only ring hetero atoms
- C07D305/02—Heterocyclic compounds containing four-membered rings having one oxygen atom as the only ring hetero atoms not condensed with other rings
- C07D305/10—Heterocyclic compounds containing four-membered rings having one oxygen atom as the only ring hetero atoms not condensed with other rings having one or more double bonds between ring members or between ring members and non-ring members
- C07D305/12—Beta-lactones
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides a clean production method for acetic acid cracking for preparation of diketene. The method comprises the steps of cracking, condensation, absorption, polymerization, distillation, and residue hydrolysis treatment. The method is characterized in that dilute acetic acid is added in the residue hydrolysis section to obtain acetone, acetic acid and secondary residue; the acetone is for recycling, part of the acetone is mixed with the secondary residue to provide heat for fuel production; and acetic acid is subjected to separation, extraction and concentration and enters the cracking section as a production raw material. The invention has the advantages that by optimizing the process and the circular route, the generated waste gas and residue in the production process are digested and absorbed in the system, so as to realize clean production.
Description
Technical field
The invention belongs to chemical production technical field, relate to the clean preparation method of acetic acid cracking legal system for ketene dimer.
Background technology
Acetic acid cracking method prepares the main method of ketene dimer at present.Because ketene dimer belongs to heat-sensitive substance, in building-up process, easily form superpolymer and the autopolymer of indissoluble, these polymers constitute the primary solids residue in ketene dimer method.Mainly comprise aceticanhydride, ketene dimer, ketene superpolymer etc. in residue, and there is irritating smell.Mainly be hydrolyzed the process of residue at present, after reclaiming acetone and acetic acid, residual residue is directly discharged in environment, can cause very large pollution, and wastes fuel valuable in residue and active substance.In addition, can produce a large amount of gas in ketene dimer production process, general selection is directly discharged, and also can cause very large loss of material and environmental pollution.So, how to realize the recovery comprehensive utilization of residue and the waste gas produced in ketene dimer production process, become modernism problem demanding prompt solution.
Summary of the invention
Main purpose of the present invention be exactly to solve produce in ketene dimer production process residue, waste gas problem of complex utilization, a kind of clean preparation method of ketene dimer is provided.
The technical solution used in the present invention is as follows:
A clean preparation method for ketene dimer, comprises following basic method steps: cracking, condensation, absorption, polymerization, rectifying, residue hydrolysis treatment, is characterized in that:
In a, residue hydrolysis treatment step, liquid (crude product ketene dimer content 40% after the one-level residue produced after rectification section and pump, anhydride content 40-50%, rest part is acetic acid) being mixed into one-level residue diluent with the ratio of 2:1, one-level residue diluent is delivered in hydrolysis workshop section and is hydrolyzed; By heating diluted acid in hydrolysis kettle, form backflow, then dripped by one-level residue diluent, be hydrolyzed reaction, and wherein ketene dimer and acetic acid reaction generate aceticanhydride, acetone and carbonic acid gas; Aceticanhydride and water reaction generate acetic acid, and final products obtained therefrom is acetone, acetic acid and secondary residue.Reaction equation is:
C
4H
4O
2+ CH
3COOH
（CH
3CO）
2O+ CH
3COCH
3+CO
2
Ketene dimer acetic acid aceticanhydride acetone carbonic acid gas
（CH
3CO）
2O+H
2O
2CH
3COOH
Aceticanhydride water acetic acid
B, hydrolysis workshop section Separation and Recovery is carried out to the acetone of gained, one, the acetone reclaimed becomes product, and another part is for dissolving the remaining secondary residue of hydrolysis workshop section, and secondary residue lysate enters pyrolyzer burning by special nozzle, for pyrolyzer provides heat, combustion tail gas directly discharges.
On technique scheme basis, there is following further improvement project:
In hydrolysis workshop section, the acetic acid of gained enters dilute acetic acid concentrate workshop section, carries out membrane sepn after the waste water reclamation N-BUTYL ACETATE of generation, and the recovery of acetic acid that separation obtains and dense acetic acid are mixed with the raw material cracking acid of cracking workshop section, and separating obtained water is that evaporative condenser is used.
The waste gas that rectifying, hydrolysis workshop section produce adopts concentrates water to absorb, and waste gas is uncooled ketene and acetic gas mainly, also has the gas that the side reaction of cracking workshop section produces, and the main component after water absorbs is methane, carbon monoxide, carbonic acid gas, ethene.After Safety water seal, enter the burning of cracking workshop section, as a part of heat of acetic acid cracking, reaction equation is as follows:
Cracking side-reaction produces gas:
2CH
3COOH
CH
2=CO+CH
4+H
2O+CO
2
Vinyl acetate between to for plastic ketone methane water carbonic acid gas
2 CH
2=CO
C
2H
4+2CO
Ketene ethylene carbon monoxide
2 CH
2=CO
CH
4+CO
2+2C
Ketene methane carbon
Water absorbs chemical equation:
CH
2=CO+H
2O
CH
3COOH
Ketene water acetic acid
CH
2=CO+CH
3COOH
（CH
3CO）
2O
Ketene acetic acid aceticanhydride
（CH
3CO）
2O+H2O
2CH
3COOH
Aceticanhydride water acetic acid
The invention has the advantages that by Optimizing Flow, walk circulation route, digest and assimilate waste gas and the residue of production process generation in native system inside, accomplish cleaner production.
Accompanying drawing explanation
Fig. 1 is the method schematic diagram of ketene dimer cleaner production of the present invention.
Embodiment
Embodiment 1
As shown in Figure 1, the invention provides a kind of ketene dimer clean preparation method, comprise the following steps:
A. the dilute acetic acid of the dense acetic acid of 99.8% and 85% of system recoveries is mixed with cracking acid in proportion, throw the cracking acid of 1.8 T 96% in pyrolyzer, pyrolyzer control of export temperature is 720 degree, pressure-80 KPa.Through the ketene gas of condensation, send into polymerization workshop section, obtain the thick ketene dimer of 0.846 T, and then rectification and purification obtains 0.765 T ketene dimer finished product, produce one-level residue 0.1 T.
B. one-level residue is fully diluted with pump after the abundant mixed diluting of liquid after liquid (rest part is acetic acid for crude product ketene dimer content 40%, acid anhydride content 40-50%) 1.2T pump, be sent to hydrolysis workshop section.Drop into 1T diluted acid in hydrolysis workshop section, at pressure 10KPa, temperature drips one-level residue diluent at remaining on 165-170 DEG C, and time for adding is 2-3h, and the reaction times is 4h.Question response terminates, and reclaims acetone 83 Kg of 70%, 70% dilute acetic acid 200 Kg, secondary residue 62 Kg.
C. utilize acetone 13 Kg of recovery to dissolve secondary residue, acetone and residue ratio 1:5. control solvent temperature 45 DEG C, by special nozzle, with 0.06-0.08m
3the flow of/h is sent into pyrolyzer and is burnt, temperature of combustion 800 degree, oxygen level 2.5%.Remaining acetone is as Product recycling.
D. 70% dilute acetic acid reclaimed enters concentrate workshop section, and input 900 Kg dilute acetic acid per hour, obtains the dilute acetic acid of 405 Kg 85%, produce 500 Kg waste water.A small amount of N-BUTYL ACETATE in waste water reclaims, and gets back to diluted acid concentrate workshop section.Waste water then enters separatory membrane, and be separated to obtain 3 Kg 80% diluted acids and the following pure water of 495 Kg specific conductivity 50uma, dilute acetic acid is sent to and is mixed with cracking stock with dense acetic acid, and pure water is then that evaporative condenser is used.
E. by the gas sampling that rectifying, hydrolysis workshop section produce, 3m is dropped into
3water absorbs, and finally obtains 150m
3gas, with 20m after Safety water seal
3the flow of/h enters the burning of cracking workshop section, and temperature of combustion is 800 DEG C, as a part of heat of pyrolyzer.
Embodiment 2
A. the dilute acetic acid of the dense acetic acid of 99.8% and 85% of system recoveries is mixed with cracking acid in proportion, throw the cracking acid of 1.5 T 96% in pyrolyzer, pyrolyzer control of export temperature is 730 degree, pressure-85 KPa.Through the ketene gas of condensation, send into polymerization workshop section, obtain the thick ketene dimer of 0.72 T, and then rectification and purification obtains 0.65 T ketene dimer finished product, produce one-level residue 800 Kg.
B. one-level residue is fully diluted with pump after the abundant mixed diluting of liquid after liquid (rest part is acetic acid for crude product ketene dimer content 40%, acid anhydride content 40-50%) 1.2T pump, be sent to hydrolysis workshop section.Drop into 1T diluted acid in hydrolysis workshop section, at pressure 10KPa, temperature drips one-level residue diluent at remaining on 165-170 DEG C, and time for adding is 2-3h, and the reaction times is 4h.Question response terminates, and reclaims acetone 65 Kg of 70%, 70% dilute acetic acid 160 Kg, secondary residue 50 Kg.
C. utilize acetone 10 Kg of recovery to dissolve secondary residue, control solvent temperature 45 DEG C, by special nozzle, with 0.06-0.08m
3the flow of/h is sent into pyrolyzer and is burnt, temperature of combustion 820 degree, oxygen level 2.3%.Remaining acetone is as Product recycling.
D. 70% dilute acetic acid reclaimed enters concentrate workshop section, and input 800 Kg dilute acetic acid per hour, obtains the dilute acetic acid of 390 Kg 85%, waste water 400 Kg of acetic acid content 0.45%.A small amount of N-BUTYL ACETATE in waste water reclaims, and gets back to diluted acid concentrate workshop section.Waste water then enters separatory membrane, and be separated to obtain 2 Kg diluted acids and the following pure water of 395 Kg specific conductivity 50uma, dilute acetic acid is sent to and is mixed with cracking stock with dense acetic acid, and pure water is then that evaporative condenser is used.
E. by the gas sampling that rectifying, hydrolysis workshop section produce, 8m is dropped into
3water absorbs, and finally obtains 150m
3gas, with 5-7m after Safety water seal
3the flow of/h enters the burning of cracking workshop section, and temperature of combustion is 800 DEG C, as a part of heat of pyrolyzer.
Claims (3)
1. the clean preparation method of ketene dimer, comprises following basic step: cracking, condensation, absorption, polymerization, rectifying, residue hydrolysis treatment, is characterized in that:
In a, residue hydrolysis treatment step, after the one-level residue produced after rectification section and pump, liquid is mixed into one-level residue diluent with the ratio of 2:1, one-level residue diluent is delivered to hydrolysis workshop section and is hydrolyzed, by heating dilute acetic acid in hydrolysis kettle, then residue diluent is dripped, be hydrolyzed reaction, and the final products obtained therefrom of hydrolysis workshop section is acetone, acetic acid and secondary residue;
B, carry out Separation and Recovery in hydrolysis workshop section to the acetone of gained, one, the acetone of recovery becomes product, and another part is for dissolving hydrolysis workshop section remaining secondary residue, and secondary residue lysate enters pyrolyzer burning by special nozzle.
2. the clean preparation method of a kind of ketene dimer according to claim 1, it is characterized in that: in hydrolysis workshop section, the acetic acid of gained enters dilute acetic acid concentrate workshop section, membrane sepn is carried out after the waste water reclamation N-BUTYL ACETATE produced, the recovery of acetic acid that separation obtains and dense acetic acid are mixed with the raw material of cracking workshop section, and separating obtained water is that evaporative condenser is used.
3. the clean preparation method of a kind of ketene dimer according to claim 1, is characterized in that: the waste gas of rectifying, hydrolysis workshop section adopts concentrates water to absorb, and after absorption, enters the burning of cracking workshop section, as a part of origin of heat of acetic acid cracking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501478.2A CN104402670A (en) | 2014-09-27 | 2014-09-27 | Clean production method of diketene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410501478.2A CN104402670A (en) | 2014-09-27 | 2014-09-27 | Clean production method of diketene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104402670A true CN104402670A (en) | 2015-03-11 |
Family
ID=52640354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410501478.2A Pending CN104402670A (en) | 2014-09-27 | 2014-09-27 | Clean production method of diketene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104402670A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105107222A (en) * | 2015-09-17 | 2015-12-02 | 湖州新奥特医药化工有限公司 | Circulating pyrolysis gas quenching device |
| CN106349190A (en) * | 2016-08-30 | 2017-01-25 | 安徽金禾实业股份有限公司 | Method for extracting ketene dimer by rectifying residues and pumped liquid |
| CN108358874A (en) * | 2018-01-13 | 2018-08-03 | 安徽金禾实业股份有限公司 | A kind of ketene dimer multiplexing section production method and device |
| CN110075661A (en) * | 2019-05-30 | 2019-08-02 | 山东亚邦化工科技有限公司 | The processing method and device of ketene dimer technology waste gas |
| CN110981717A (en) * | 2019-12-28 | 2020-04-10 | 新华制药（寿光）有限公司 | Hydrolysis treatment method for diketene residue |
| CN113582837A (en) * | 2021-08-17 | 2021-11-02 | 安徽金禾实业股份有限公司 | Method and device for online switching and cleaning of diketene acetic acid recovery system |
| CN115521198A (en) * | 2022-09-16 | 2022-12-27 | 宁波王龙科技股份有限公司 | Diluted acid hydrolysis process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337869A (en) * | 2008-08-01 | 2009-01-07 | 江苏天成生化制品有限公司 | Processing process for ketene dimer rectification residue |
| CN101747298A (en) * | 2010-02-01 | 2010-06-23 | 宁波王龙科技股份有限公司 | Process for preparing high-purity diketene |
| CN103113186A (en) * | 2012-11-11 | 2013-05-22 | 安徽金禾实业股份有限公司 | Treating method and treating device for ketene dimer production residues |
-
2014
- 2014-09-27 CN CN201410501478.2A patent/CN104402670A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101337869A (en) * | 2008-08-01 | 2009-01-07 | 江苏天成生化制品有限公司 | Processing process for ketene dimer rectification residue |
| CN101747298A (en) * | 2010-02-01 | 2010-06-23 | 宁波王龙科技股份有限公司 | Process for preparing high-purity diketene |
| CN103113186A (en) * | 2012-11-11 | 2013-05-22 | 安徽金禾实业股份有限公司 | Treating method and treating device for ketene dimer production residues |
Non-Patent Citations (2)
| Title |
|---|
| 刘转年等: "《环保设备基础》", 31 January 2013, 中国矿业大学出版社 * |
| 陶杰主编: "《化学制药技术 第二版》", 31 March 2013, 化学工业出版社 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105107222A (en) * | 2015-09-17 | 2015-12-02 | 湖州新奥特医药化工有限公司 | Circulating pyrolysis gas quenching device |
| CN106349190A (en) * | 2016-08-30 | 2017-01-25 | 安徽金禾实业股份有限公司 | Method for extracting ketene dimer by rectifying residues and pumped liquid |
| CN106349190B (en) * | 2016-08-30 | 2018-06-05 | 安徽金禾实业股份有限公司 | The method of rectification residue and liquid extraction ketene dimer after pump |
| CN108358874A (en) * | 2018-01-13 | 2018-08-03 | 安徽金禾实业股份有限公司 | A kind of ketene dimer multiplexing section production method and device |
| CN108358874B (en) * | 2018-01-13 | 2022-02-15 | 安徽金禾实业股份有限公司 | Multi-section production method and device for diketene |
| CN110075661A (en) * | 2019-05-30 | 2019-08-02 | 山东亚邦化工科技有限公司 | The processing method and device of ketene dimer technology waste gas |
| CN110981717A (en) * | 2019-12-28 | 2020-04-10 | 新华制药（寿光）有限公司 | Hydrolysis treatment method for diketene residue |
| CN113582837A (en) * | 2021-08-17 | 2021-11-02 | 安徽金禾实业股份有限公司 | Method and device for online switching and cleaning of diketene acetic acid recovery system |
| CN113582837B (en) * | 2021-08-17 | 2023-10-20 | 安徽金禾实业股份有限公司 | Online switching cleaning method and device for diketene acetic acid recovery system |
| CN115521198A (en) * | 2022-09-16 | 2022-12-27 | 宁波王龙科技股份有限公司 | Diluted acid hydrolysis process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104402670A (en) | Clean production method of diketene | |
| CN106349190B (en) | The method of rectification residue and liquid extraction ketene dimer after pump | |
| US8716522B2 (en) | Acetic acid production from biomass pyrolysis | |
| CN102126926B (en) | Method for recycling ethylene glycol and acetaldehyde from polyester waste water | |
| CN102180791A (en) | Method for separating methyl acetate-methanol mixture by ionic liquid intermittent extractive rectification | |
| CN106810450A (en) | The apparatus and method that a kind of catalytic reaction rectification prepares dibutyl phthalate | |
| CN103351321A (en) | Continuous energy-saving NMP (N-methyl pyrrolidone) production method | |
| CN103012090B (en) | Method for recovering organic matters in polyester wastewater | |
| CN104058924A (en) | Method for preparing chloromethane by utilizing alcohol-containing hydrochloric acid | |
| CN105111171A (en) | Technique for recovering maleic anhydride by using diisobutyl hexahydrophthalate as solvent | |
| CN105152882A (en) | A kind of method that DMM3-5 is prepared by highly condensed methoxy dimethyl ether component DMM6+ and methylal DMM | |
| CN104190104A (en) | Process equipment and method for refining dimethoxymethane in byproducts produced in production of glyphosate by glycine method | |
| CN103724191A (en) | Dimethyl malonate preparation method | |
| TWI532681B (en) | A method for recovering ethylene glycol and acetaldehyde from polyester wastewater | |
| CN103724196A (en) | Dimethyl malonate preparation method | |
| CN104415571A (en) | Device and method for continuously purifying vulcanization accelerator-2-mercaptobenzothiazole | |
| CN101857226A (en) | Technology for producing carbon dioxide by propylene carbonate | |
| CN104529765A (en) | Reaction device and method for producing methyl propionate | |
| CN204147853U (en) | A kind of reaction dewater unit | |
| CN106866409B (en) | Method for extracting and recovering dilute acetic acid from cyclohexyl acetate | |
| CN203947051U (en) | A kind of device of preparing trioxymethylene | |
| CN104945235A (en) | Method for extracting acetaldehyde and ethylene glycol from polyester wastewater | |
| CN203768304U (en) | Novel continuous environment-friendly renewable energy refining equipment | |
| CN216630816U (en) | Tetrahydrofuran recovery device in S-alkanone synthesis | |
| CN105237399A (en) | Reactive distillation process for heavy component residue liquid produced in process of producing acetic acid through carbonylation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150311 |
|
| RJ01 | Rejection of invention patent application after publication |