ES229953A1 - Improved process for the production of vinyl chloride from 1,2-dichlorethane and acetylene - Google Patents
Improved process for the production of vinyl chloride from 1,2-dichlorethane and acetyleneInfo
- Publication number
- ES229953A1 ES229953A1 ES0229953A ES229953A ES229953A1 ES 229953 A1 ES229953 A1 ES 229953A1 ES 0229953 A ES0229953 A ES 0229953A ES 229953 A ES229953 A ES 229953A ES 229953 A1 ES229953 A1 ES 229953A1
- Authority
- ES
- Spain
- Prior art keywords
- catalyst
- dehydrochlorination
- reactor
- dichlorethane
- zone
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/07—Preparation of halogenated hydrocarbons by addition of hydrogen halides
- C07C17/08—Preparation of halogenated hydrocarbons by addition of hydrogen halides to unsaturated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/25—Preparation of halogenated hydrocarbons by splitting-off hydrogen halides from halogenated hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00002—Chemical plants
- B01J2219/00004—Scale aspects
- B01J2219/00006—Large-scale industrial plants
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A dehydrochlorination catalyst consisting of an active carbon base impregnated with a metal salt (e.g. barium chloride) is regenerated by treatment with inert gases (e.g. nitrogen) containing water vapour and only traces of oxygen at elevated temperature (e.g. 900 DEG C.).ALSO:Vinyl chloride is produced partly by catalytic dehydrochlorination of 1 : 2-dichlorethane and partly by catalytic synthesis from the hydrochloric acid so produced and acetylene, by a process wherein the catalytic dehydrochlorination is effected in a first substantially upright reaction zone and the catalytic synthesis in a second such zone, the catalyst in each zone being in the form of a powder having a particle size of 40-200 microns in diameter, 95 per cent of the particles being of 50-150 microns diameter, and wherein the reactants and reaction products in each zone are in the gaseous state, the amount of catalyst and rate of flow of reactants and reaction products through each zone being such that the catalyst is maintained in fluidized suspension throughout substantially the entire length of each reaction zone, and that in each reaction zone the upper level of said suspension is adjacent to the upper limit of the reaction zone. Preferably the dehydrochlorination is effected at 350-450 DEG C. in the presence of a catalyst consisting of a base (e.g. silica gel, clay or active carbon) impregnated with a metal salt (e.g. barium chloride), which may be regenerated by continuously extracting it from the upper part of the reaction zone and recycling it to the lower part after burning off the tar deposited thereon or (in the case of a catalyst with an active carbon base) treating it with inert gases (e.g. nitrogen) containing water vapour and only traces of oxygen at elevated temperatures (e.g. 900 DEG C.). The synthesis step is preferably carried out at 120-160 DEG C. in the presence of powdered active carbon impregnated with mercuric chloride, using acetylene substantially free from catalyst poisons. A suitable apparatus, described with the aid of a drawing, comprises a double-column vertical dehydrochlorination reactor and a double-column vertical synthesis reactor, there being an injector at the foot of each reactor for supplying the fluidized catalyst suspensions thereto and a cyclone device at the top of each reactor and connected to the top of each lower column for receiving product gases therefrom, a dichlorethane distillation unit for receiving excess dichlorethane liquefied from the products leaving the dehydrochlorination reactor and for returning part of said excess dichlorethane to said reaction as a recycle food, a product distillation unit for separating the products leaving the synthesis reactor into recycle acetylene and dichlorethane and product vinyl chloride, and a regenerator for the dehydrochlorination catalyst. The latter preferably comprises cyclone means for collecting the powdered catalyst, conduit means for causing hot gases to suspend said catalyst during the regeneration and to deposit the regenerated catalyst in said cyclone means, further conduit means connecting said cyclone means to the supply mains for the dichlorethane feed to the dehydrochlorination reactor, and blower means in said supply mains to entrain the regenerated catalyst with the gases fed to the foot of said reactor. A jacket may surround at least part of the lower column of the dehydrochlorination reactor, there being conduit means for causing hot fluid to enter said jacket near the top and leave the bottom thereof. A numerical example describes the production of 5 tons a day of pure vinyl chloride.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB22637/55A GB801663A (en) | 1955-08-05 | 1955-08-05 | Improved process for the production of vinyl chloride from 1,2-dichlorethane and acetylene |
Publications (1)
Publication Number | Publication Date |
---|---|
ES229953A1 true ES229953A1 (en) | 1956-10-16 |
Family
ID=10182663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES0229953A Expired ES229953A1 (en) | 1955-08-05 | 1956-07-21 | Improved process for the production of vinyl chloride from 1,2-dichlorethane and acetylene |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE549468A (en) |
ES (1) | ES229953A1 (en) |
FR (1) | FR1157791A (en) |
GB (1) | GB801663A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117943132A (en) * | 2024-03-26 | 2024-04-30 | 浙江省白马湖实验室有限公司 | In-situ regeneration method of carbon-based catalyst |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES325919A1 (en) * | 1965-06-09 | 1967-03-01 | The B F Goodrich Company | Procedure for preparing 1,2-dichloroethane. (Machine-translation by Google Translate, not legally binding) |
BE755150A (en) * | 1969-08-22 | 1971-02-22 | Dow Chemical Co | USE OF HYDROBROMIDE ACID FROM THE PYROLYSIS OF ETHYLENE DUDIBROMIDE, |
FR2639851B1 (en) * | 1988-12-01 | 1991-10-18 | Atochem | METHOD FOR CLEANING TUBES IN OPERATION USING PARTICLES |
GB201509019D0 (en) | 2015-05-27 | 2015-07-08 | Johnson Matthey Plc | Process and catalyst |
CN112844460B (en) * | 2019-11-27 | 2022-06-03 | 中国科学院大连化学物理研究所 | Catalyst for preparing chloroethylene by acetylene and dichloroethane coupling reaction and application thereof |
-
0
- BE BE549468D patent/BE549468A/xx unknown
-
1955
- 1955-08-05 GB GB22637/55A patent/GB801663A/en not_active Expired
-
1956
- 1956-07-21 ES ES0229953A patent/ES229953A1/en not_active Expired
- 1956-08-02 FR FR1157791D patent/FR1157791A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117943132A (en) * | 2024-03-26 | 2024-04-30 | 浙江省白马湖实验室有限公司 | In-situ regeneration method of carbon-based catalyst |
Also Published As
Publication number | Publication date |
---|---|
BE549468A (en) | 1900-01-01 |
FR1157791A (en) | 1958-06-03 |
GB801663A (en) | 1958-09-17 |
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