SU415863A3 - A METHOD FOR CLEANING 1,2-DICHLORETHANE FROM LOW-BODY IMPURITIES - Google Patents
A METHOD FOR CLEANING 1,2-DICHLORETHANE FROM LOW-BODY IMPURITIESInfo
- Publication number
- SU415863A3 SU415863A3 SU1425331A SU1425331A SU415863A3 SU 415863 A3 SU415863 A3 SU 415863A3 SU 1425331 A SU1425331 A SU 1425331A SU 1425331 A SU1425331 A SU 1425331A SU 415863 A3 SU415863 A3 SU 415863A3
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- dichloroethane
- low
- impurities
- dichlorethane
- cleaning
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/395—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to a chemical modification of at least one compound
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
1one
Изобретение относитс к способам очистки 1,2-дихлорэтана от низкокип щих примесей.This invention relates to methods for purifying 1,2-dichloroethane from low boiling impurities.
Известен способ очистки 1,2-дихлорэтана от низкокип ш,их примесей выдерживанием в присутствии безводного хлористого алюмини при 130-150°С с последующей отгонкой чистого дихлорэтана от полученных при этом высококип щих продуктов. Но процесс провод т ступенчато в автоклаве при достаточно высокой температуре.A known method for purifying 1,2-dichloroethane from low-boiling point n, their impurities by incubation in the presence of anhydrous aluminum chloride at 130-150 ° C, followed by distillation of pure dichloroethane from the high-boiling products thus obtained. But the process is carried out stepwise in an autoclave at a sufficiently high temperature.
Дл упрощени процесса предлагают очистку 1,2-дихлорэтапа проводить обработкой газообразным хлором. Желательно при этом в качестве катализатора использовать хлорное железо FeCls и процесс вести при 30-85°С.To simplify the process, it is proposed to purify the 1,2-dichloro-phase by treatment with chlorine gas. It is desirable to use FeCls ferric chloride as a catalyst and to conduct the process at 30-85 ° С.
Данный способ .примен ют, например, при очистке от низкокип щих примесей 1,2-дихлорэтана в процессе получени винилхлорида.This method is used, for example, in the purification of low-boiling impurities of 1,2-dichloroethane in the process of producing vinyl chloride.
Способ получени винилхлорида вл етс двухстадийным и состоит из каталитического хлорировани этилена в 1,2-дихлорэтан и термического разложени этого 1,2-дихлорэтана па винилхлорид и хлористый водород.The method of producing vinyl chloride is a two-step process and consists of the catalytic chlorination of ethylene to 1,2-dichloroethane and the thermal decomposition of this 1,2-dichloroethane on vinyl chloride and hydrogen chloride.
Более высока степень превращени 1,2-дихлорэтана в винилхлорид имеет своим следствием образование побочных продуктов при расщеплении дихлорэтана. При этом скорость коксовани установки растет и, следовательно , возникает необходимость частой чистки ее.The higher degree of conversion of 1,2-dichloroethane to vinyl chloride results in the formation of by-products in the splitting of dichloroethane. At the same time, the rate of coking of the installation grows and, therefore, it becomes necessary to clean it frequently.
Данный способ позвол ет применительно к процессу получени винилхлорида повысить степень превращени 1,2-дихлорэтана в винилхлорид . 1,2-Дихлорэтан, возвращаемыйThis method allows, as applied to the process of obtaining vinyl chloride, to increase the degree of conversion of 1,2-dichloroethane to vinyl chloride. 1,2-Dichloroethane, returned
непрореагировавщим после термического расщеплени , содержит примеси, кип щие ниже 83,7°С, а также примеси, кип щие выше 83,7°С. Загр зненный 1,2-дихлорэтан при 30- 85°С, предпочтительно 50-70°С, подвергаютunreacted after thermal decomposition, contains impurities boiling below 83.7 ° C, as well as impurities boiling above 83.7 ° C. Contaminated 1,2-dichloroethane at 30–85 ° C, preferably 50–70 ° C, is subjected to
действию хлора. Предпочтительные количества FeCla, как катализатора, составл ют 50- 500 м. д. Загр зненный 1,2-дихлорэтан можно вводить в известную установку дл превращени хлора и этилена в 1,2-дихлорэтан, так чтоchlorine action. Preferred amounts of FeCla as a catalyst are 50-500 ppm. The contaminated 1,2-dichloroethane can be introduced into a known unit for converting chlorine and ethylene to 1,2-dichloroethane, so that
этилен и загр зненный дихлорэтан вместе подвергаютс действию хлора в присутствии катализатора, после чего катализатор отдел ют промыванием водой, а чистый дихлорэтан затем отгон ют от высококип щих примесей.ethylene and contaminated dichloroethane are collectively exposed to chlorine in the presence of a catalyst, after which the catalyst is separated by washing with water, and the pure dichloroethane is then distilled off from the high boiling impurities.
С другой стороны, очистку можно вести таким образом, что загр зненный 1,2-дихлорэтан перегонкой очищают от легколетучих примесей, весь или часть концентрата легкокип щих примесей, собравщегос в верхнейOn the other hand, the purification can be carried out in such a way that contaminated 1,2-dichloroethane by distillation is purified from volatile impurities, all or part of the concentrate of low-boiling impurities collected in the upper
части соответствующей колонны дл легкокип щих веществ, непрерывно отвод т, подвергают в присутствии катализатора действию хлора и затем смесь, содержащую катализатор , возвращают в колонку дл легкокип щихportions of the corresponding light boiling column are continuously withdrawn, subjected to chlorine in the presence of a catalyst, and then the mixture containing the catalyst is returned to the light boiling column
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691917933 DE1917933C3 (en) | 1969-04-09 | Process for reducing the content of 2-chlorobutadiene (1,3), carbon tetrachloride and benzene in 1,2-dichloroethane, which was recovered to vinyl chloride during incomplete thermal cleavage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU415863A3 true SU415863A3 (en) | 1974-02-15 |
Family
ID=5730635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1425331A SU415863A3 (en) | 1969-04-09 | 1970-04-08 | A METHOD FOR CLEANING 1,2-DICHLORETHANE FROM LOW-BODY IMPURITIES |
Country Status (15)
| Country | Link |
|---|---|
| JP (1) | JPS543846B1 (en) |
| AT (1) | AT294026B (en) |
| BE (1) | BE748722A (en) |
| BR (1) | BR7018143D0 (en) |
| CA (1) | CA946416A (en) |
| CH (1) | CH529703A (en) |
| CS (1) | CS187307B2 (en) |
| DK (1) | DK125917B (en) |
| ES (1) | ES378366A1 (en) |
| FR (1) | FR2038347B1 (en) |
| GB (1) | GB1266676A (en) |
| HU (1) | HU162991B (en) |
| NL (1) | NL150416B (en) |
| RO (1) | RO61949A (en) |
| SU (1) | SU415863A3 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE759409A (en) * | 1969-11-26 | 1971-05-25 | Knapsack Ag | PROCESS FOR LOWERING THE 2-CHLOROBUTADIENE- (1,3) CONTENT OF 1,2-DICHLORETHANE RECOVERED IN THE INCOMPLETE THERMAL DISSOCIATION OF VINYL CHLORIDE |
| FR2211429B1 (en) * | 1972-12-27 | 1976-08-27 | Rhone Progil | |
| DE2754891C3 (en) * | 1977-12-09 | 1981-02-26 | Wacker-Chemie Gmbh, 8000 Muenchen | Process for the purification of unreacted 1,2-dichloroethane from vinyl chloride production |
| DE4012538A1 (en) * | 1990-04-19 | 1991-10-24 | Wacker Chemie Gmbh | METHOD FOR PURIFYING UNreacted 1,2-DICHLORETHANE FROM A 1,2-DICHLORETHANE PYROLYSIS PROCESS |
| FR2746097B1 (en) * | 1996-03-14 | 1998-04-24 | METHOD FOR CONVERTING THE LOW BOILING POINT BY-PRODUCTS FORMED DURING THE THERMAL CRACKING OF 1,2-DICHLOROETHANE |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1466058A (en) * | 1965-01-29 | 1967-01-13 | Stauffer Chemical Co | Purification of ethylene dichloride containing trichlorethylene |
-
1970
- 1970-03-24 CH CH452370A patent/CH529703A/en not_active IP Right Cessation
- 1970-03-24 CA CA078,256A patent/CA946416A/en not_active Expired
- 1970-04-02 RO RO6296070A patent/RO61949A/ro unknown
- 1970-04-07 GB GB1266676D patent/GB1266676A/en not_active Expired
- 1970-04-07 AT AT315570A patent/AT294026B/en not_active IP Right Cessation
- 1970-04-07 NL NL7004977A patent/NL150416B/en not_active IP Right Cessation
- 1970-04-08 ES ES378366A patent/ES378366A1/en not_active Expired
- 1970-04-08 SU SU1425331A patent/SU415863A3/en active
- 1970-04-08 DK DK175370A patent/DK125917B/en unknown
- 1970-04-09 FR FR7012880A patent/FR2038347B1/fr not_active Expired
- 1970-04-09 BR BR21814370A patent/BR7018143D0/en unknown
- 1970-04-09 BE BE748722D patent/BE748722A/en not_active IP Right Cessation
- 1970-04-09 JP JP3046170A patent/JPS543846B1/ja active Pending
- 1970-04-09 CS CS236770A patent/CS187307B2/en unknown
- 1970-04-09 HU HUKA001246 patent/HU162991B/hu unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS187307B2 (en) | 1979-01-31 |
| CA946416A (en) | 1974-04-30 |
| ES378366A1 (en) | 1972-06-16 |
| DK125917B (en) | 1973-05-21 |
| RO61949A (en) | 1977-08-15 |
| HU162991B (en) | 1973-05-28 |
| NL150416B (en) | 1976-08-16 |
| DE1917933A1 (en) | 1970-12-03 |
| JPS543846B1 (en) | 1979-02-27 |
| AT294026B (en) | 1971-11-10 |
| NL7004977A (en) | 1970-10-13 |
| FR2038347A1 (en) | 1971-01-08 |
| BR7018143D0 (en) | 1973-01-09 |
| GB1266676A (en) | 1972-03-15 |
| CH529703A (en) | 1972-10-31 |
| BE748722A (en) | 1970-10-09 |
| FR2038347B1 (en) | 1974-03-15 |
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