YU39977B - Process for direct selective obtaining of isobutylene - Google Patents
Process for direct selective obtaining of isobutyleneInfo
- Publication number
- YU39977B YU39977B YU253076A YU253076A YU39977B YU 39977 B YU39977 B YU 39977B YU 253076 A YU253076 A YU 253076A YU 253076 A YU253076 A YU 253076A YU 39977 B YU39977 B YU 39977B
- Authority
- YU
- Yugoslavia
- Prior art keywords
- isobutylene
- reaction
- methanol
- sulphuric acid
- oct
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/01—Preparation of ethers
- C07C41/05—Preparation of ethers by addition of compounds to unsaturated compounds
- C07C41/06—Preparation of ethers by addition of compounds to unsaturated compounds by addition of organic compounds only
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/148—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound
- C07C7/14875—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with organic compounds
- C07C7/14891—Purification; Separation; Use of additives by treatment giving rise to a chemical modification of at least one compound with organic compounds alcohols
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
1532477 Separating isobutylene by selective reaction MAGYAR ASVANYOLAJ ES FOLDGAZ KISERLETI INTEZET 7 Oct 1976 [29 Oct 1975] 41688/76 Heading C5E [Also in Division C2] Isobutylene is removed as methly t-butyl ether from mixtures containing predominantly isobutylene and other C 4 hydrocarbons by reacting with a stoichiometric excess of the required quantity of methanol in the presence of sulphuric acid catalyst in a homogeneous liquid phase at 50-120‹ C.; after the reaction the mixture is cooled to between -25 and +40‹ C. and a quantity of reaction product from which methanol has been removed and/or a quantity of a C 4 fraction free ofisobutene obtained in the process is added; the sulphuric acid phase which then separates is recirculated to the reaction, and methanol and methyl t-butyl ether are isolated by aqueous washing and distilling the residual mixture which contains sulphuric acid in a reduced quantity. The C 4 hydrocarbon mixtures may be a fraction derived from a catalytic cracking process or from the pyrolysis of gasoline, and may contain butadiene as well as butanes and butenes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| HUMA002724 HU175954B (en) | 1975-10-29 | 1975-10-29 | Process for direct separation of isobutylene form mixtures of hydrocarbones |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| YU253076A YU253076A (en) | 1982-05-31 |
| YU39977B true YU39977B (en) | 1985-06-30 |
Family
ID=10998814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| YU253076A YU39977B (en) | 1975-10-29 | 1976-10-14 | Process for direct selective obtaining of isobutylene |
Country Status (16)
| Country | Link |
|---|---|
| JP (1) | JPS5257103A (en) |
| AT (1) | AT346297B (en) |
| BE (1) | BE847862A (en) |
| CA (1) | CA1077066A (en) |
| CS (1) | CS205045B2 (en) |
| DD (1) | DD126591A1 (en) |
| DE (1) | DE2649623A1 (en) |
| FR (1) | FR2329622A1 (en) |
| GB (1) | GB1532477A (en) |
| HU (1) | HU175954B (en) |
| IT (1) | IT1079198B (en) |
| NL (1) | NL7611965A (en) |
| PL (1) | PL110592B1 (en) |
| RO (1) | RO71263A (en) |
| SU (1) | SU915797A3 (en) |
| YU (1) | YU39977B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2928510A1 (en) * | 1979-07-14 | 1981-01-29 | Basf Ag | METHOD FOR PRODUCING ISOBUTEN FROM ISOBUTEN CONTAINING C TIEF 4-HYDROCARBON MIXTURES |
| DE2928509A1 (en) * | 1979-07-14 | 1981-01-29 | Basf Ag | METHOD FOR THE SIMULTANEOUS PRODUCTION OF METHYL-TERT.-BUTYL ETHER AND PRODUCTION OF ISOBUTEN |
| ZA813808B (en) * | 1980-06-12 | 1983-01-26 | British Petroleum Co | Isobutene by dehydroisomerisation of normal butane |
| CN113582801B (en) * | 2020-04-30 | 2023-09-05 | 中国石油化工股份有限公司 | Process for preparing isooctenes by mixing carbon four selective overlapping |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3121124A (en) * | 1959-05-04 | 1964-02-11 | Sinclair Research Inc | Tertiary olefin separation via etherification |
| US3170000A (en) * | 1962-10-24 | 1965-02-16 | Sinclair Research Inc | Tertiary olefin separation via etherification with small surface area catalysts |
| JPS5126401B1 (en) * | 1969-03-12 | 1976-08-06 |
-
1975
- 1975-10-29 HU HUMA002724 patent/HU175954B/en unknown
-
1976
- 1976-09-27 AT AT712976A patent/AT346297B/en not_active IP Right Cessation
- 1976-09-30 FR FR7629363A patent/FR2329622A1/en active Granted
- 1976-10-07 GB GB4168876A patent/GB1532477A/en not_active Expired
- 1976-10-14 YU YU253076A patent/YU39977B/en unknown
- 1976-10-21 SU SU762414047A patent/SU915797A3/en active
- 1976-10-25 CA CA264,132A patent/CA1077066A/en not_active Expired
- 1976-10-26 CS CS688076A patent/CS205045B2/en unknown
- 1976-10-26 DD DD19545576A patent/DD126591A1/xx unknown
- 1976-10-27 JP JP12929876A patent/JPS5257103A/en active Granted
- 1976-10-27 RO RO7688240A patent/RO71263A/en unknown
- 1976-10-28 NL NL7611965A patent/NL7611965A/en not_active Application Discontinuation
- 1976-10-28 PL PL19333076A patent/PL110592B1/en unknown
- 1976-10-28 IT IT2882476A patent/IT1079198B/en active
- 1976-10-29 DE DE19762649623 patent/DE2649623A1/en not_active Withdrawn
- 1976-10-29 BE BE171988A patent/BE847862A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| DD126591A1 (en) | 1977-07-27 |
| CA1077066A (en) | 1980-05-06 |
| FR2329622A1 (en) | 1977-05-27 |
| DE2649623A1 (en) | 1977-05-12 |
| SU915797A3 (en) | 1982-03-23 |
| IT1079198B (en) | 1985-05-08 |
| PL110592B1 (en) | 1980-07-31 |
| GB1532477A (en) | 1978-11-15 |
| AT346297B (en) | 1978-11-10 |
| CS205045B2 (en) | 1981-04-30 |
| ATA712976A (en) | 1978-03-15 |
| BE847862A (en) | 1977-02-14 |
| JPS5257103A (en) | 1977-05-11 |
| RO71263A (en) | 1981-06-26 |
| YU253076A (en) | 1982-05-31 |
| JPS5614089B2 (en) | 1981-04-02 |
| NL7611965A (en) | 1977-05-03 |
| HU175954B (en) | 1980-11-28 |
| FR2329622B1 (en) | 1980-07-25 |
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