GB1137268A - Process for recovering highly pure isoprene - Google Patents
Process for recovering highly pure isopreneInfo
- Publication number
- GB1137268A GB1137268A GB49221/66A GB4922166A GB1137268A GB 1137268 A GB1137268 A GB 1137268A GB 49221/66 A GB49221/66 A GB 49221/66A GB 4922166 A GB4922166 A GB 4922166A GB 1137268 A GB1137268 A GB 1137268A
- Authority
- GB
- United Kingdom
- Prior art keywords
- isoprene
- diolefin
- fraction
- distilling
- boiling
- 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
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 title abstract 12
- 238000000034 method Methods 0.000 title abstract 4
- 238000009835 boiling Methods 0.000 abstract 4
- 150000001993 dienes Chemical class 0.000 abstract 4
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 abstract 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 abstract 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 3
- ZSWFCLXCOIISFI-UHFFFAOYSA-N cyclopentadiene Chemical compound C1C=CC=C1 ZSWFCLXCOIISFI-UHFFFAOYSA-N 0.000 abstract 2
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 abstract 2
- 239000000203 mixture Substances 0.000 abstract 2
- 239000002904 solvent Substances 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000004215 Carbon black (E152) Substances 0.000 abstract 1
- HECLRDQVFMWTQS-UHFFFAOYSA-N Dicyclopentadiene Chemical compound C1C2C3CC=CC3C1C=C2 HECLRDQVFMWTQS-UHFFFAOYSA-N 0.000 abstract 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 abstract 1
- 229940113088 dimethylacetamide Drugs 0.000 abstract 1
- 125000002534 ethynyl group Chemical class [H]C#C* 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 150000005673 monoalkenes Chemical class 0.000 abstract 1
- 238000006116 polymerization reaction Methods 0.000 abstract 1
- 238000004227 thermal cracking Methods 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/005—Processes comprising at least two steps in series
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
- C07C7/05—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds
- C07C7/08—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds by extractive distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (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)
Abstract
1,137,268. Recovering isoprene; isopentane. JAPAN GAS-CHEMICAL CO. Inc. 2 Nov., 1966 [17 Nov., 1965; 2 May, 1966], No. 49221/66. Heading C5E. A C 5 hydrocarbon fraction containing C 5 paraffins, mono-olefins, di-olefins and acetylenes, and possibly a fraction boiling above C 5 (e.g. a C 5 cut from a naphtha thermal cracking process), is treated to recover polymerization grade isoprene by a process comprising the following steps:- (a) Heating to dimerize cyclopentadiene; (b) Distilling to remove components boiling higher than 55‹ C., including cyclopentadiene dimer; (c) Distilling the fraction remaining from (b) to remove components boiling below isoprene (mainly isopentane and including acetylenic impurities) ; (d) Extractively distilling the residue from (c) to obtain a diolefin fraction, suitable solvents being #-methoxypropionitrile (preferred), acetonitrile (which may contain a small amount of water), dimethyl formamide, and dimethyl acetamide; (e) Boiling off the selective solvent from the diolefin extract, and optionally washing the diolefin mixture obtained with water; and (f) Separating isoprene from the diolefin mixture by rectification. The process may be carried out at atmospheric or superatmospheric pressure. Isoprene of at least 99.8% purity may be recovered.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7071165 | 1965-11-17 | ||
| JP2780666 | 1966-05-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1137268A true GB1137268A (en) | 1968-12-18 |
Family
ID=26365783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB49221/66A Expired GB1137268A (en) | 1965-11-17 | 1966-11-02 | Process for recovering highly pure isoprene |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3436437A (en) |
| FR (1) | FR1499798A (en) |
| GB (1) | GB1137268A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4647344A (en) * | 1983-10-21 | 1987-03-03 | Basf Aktiengesellschaft | Recovery of isoprene from a C5 -hydrocarbon mixture |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3898135A (en) * | 1971-07-23 | 1975-08-05 | Petro Tex Chem Corp | Extractive distillation of C{HD 4 {B hydrocarbons using a three component solvent system |
| US3860512A (en) * | 1974-01-10 | 1975-01-14 | Exxon Research Engineering Co | Solvent extraction of aromatic hydrocarbons with 1,2,3-tris-(2-cyanoethoxy)-propane |
| CN108430957A (en) * | 2015-12-14 | 2018-08-21 | 沙特基础工业全球技术公司 | Method and system for recovering dicyclopentadiene from cracked gas |
| US11168042B2 (en) * | 2017-05-10 | 2021-11-09 | Sabic Global Technologies B.V. | Systems and methods for isoprene purification |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2768224A (en) * | 1956-10-23 | Isoprene concentrates | ||
| US2704778A (en) * | 1955-03-22 | Adtio | ||
| US2426705A (en) * | 1942-12-29 | 1947-09-02 | Standard Oil Dev Co | Recovery of isoprene by fractionation and extractive distillation |
| US2361493A (en) * | 1943-02-03 | 1944-10-31 | Standard Oil Dev Co | Separation and purification of hydrocarbons |
| US2407997A (en) * | 1943-08-17 | 1946-09-24 | Standard Oil Dev Co | Separation and purification of isoprene |
| US2441827A (en) * | 1943-10-27 | 1948-05-18 | Union Oil Co | Extraction process |
| US2459403A (en) * | 1944-07-20 | 1949-01-18 | Standard Oil Dev Co | Segregation of c5 hydrocarbons by extractive and azeotropic distillation |
| US2851505A (en) * | 1956-05-03 | 1958-09-09 | Gulf Research Development Co | Purification of isoprene |
| DE1163795B (en) * | 1961-11-24 | 1964-02-27 | Basf Ag | Process for the removal of small amounts of high molecular weight acetylenes and allenes from conjugated diolefins |
| BE672305A (en) * | 1962-05-18 | |||
| GB983783A (en) * | 1963-10-25 | 1965-02-17 | Shell Int Research | Process for the removal of alkynes from hydrocarbon mixtures containing alkadienes |
| GB1093413A (en) * | 1964-11-06 | 1967-11-29 | Internat Synthetic Rubber Comp | Separation of hydrocarbons |
-
1966
- 1966-11-02 GB GB49221/66A patent/GB1137268A/en not_active Expired
- 1966-11-15 US US594484A patent/US3436437A/en not_active Expired - Lifetime
- 1966-11-16 FR FR83842A patent/FR1499798A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4647344A (en) * | 1983-10-21 | 1987-03-03 | Basf Aktiengesellschaft | Recovery of isoprene from a C5 -hydrocarbon mixture |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1568895A1 (en) | 1970-09-10 |
| US3436437A (en) | 1969-04-01 |
| DE1568895B2 (en) | 1976-03-04 |
| FR1499798A (en) | 1967-10-27 |
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