GB1020676A - Purification of acetylene and ethylene - Google Patents
Purification of acetylene and ethyleneInfo
- Publication number
- GB1020676A GB1020676A GB151265A GB151265A GB1020676A GB 1020676 A GB1020676 A GB 1020676A GB 151265 A GB151265 A GB 151265A GB 151265 A GB151265 A GB 151265A GB 1020676 A GB1020676 A GB 1020676A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetylene
- ethylene
- solvent
- diacetylene
- dimethylformamide
- 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
- C07C7/00—Purification; Separation; Use of additives
- C07C7/11—Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Gas Separation By Absorption (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
In the recovery of acetylene and ethylene from a pyrolysis gas also containing diacetylene by removing diacetylene with a selective solvent, absorbing acetylene in a selective solvent and recovering ethylene from the residual gas the acetylene absorption is effected in at least two stages with a higher pressure in the later stage. Diacetylene may be removed with dimethylformamide or acetone and preferably C3+ hydrocarbons are then absorbed in a naphtha solvent which is then used as part or all of the feed to the pyrolysis. The acetylene solvent may also be dimethylformamide or acetone and the first step may absorb 50-80% of the acetylene. After compression the acetylene partial pressure should not exceed 2.5 atmospheres absolute. Ethylene may be recovered using propane and/or propylene as solvent.ALSO:In the recovery of acetylene and ethylene from a pyrolysis gas also containing diacetylene by removing diacetylene with a selective solvent, absorbing acetylene in a selective solvent and recovering ethylene from the residual gas, the acetylene absorption is effected in at least two stages with a higher pressure in the later stage. Diacetylene may be removed with dimethylformamide or acetone and preferably C3+ hydrocarbons are then absorbed in a naphtha solvent which is then used as part or all of the feed to the pyrolysis. The acetylene solvent may also be dimethylformamide or acetone and the first step may absorb 50-80% of the acetylene. After compression the acetylene partial pressure should not exceed 2,5 atmospheres absolute. Ethylene may be recovered using propane and/or propylene as solvent. In the Figure (not shown) cracked gases enter diacetylene absorber 13, and overhead gases leave at 20 for absorber 21 where C3+ hydrocarbons are removed. The gases then pass into the two stage acetylene removal towers 28, 29 and thence to ethylene absorber 49. Acetylene and ethylene are recovered from the bottoms products respectively in reboiler 40 and stripper 45, and in reboiler 52.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33915564A | 1964-01-21 | 1964-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1020676A true GB1020676A (en) | 1966-02-23 |
Family
ID=23327752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB151265A Expired GB1020676A (en) | 1964-01-21 | 1965-01-13 | Purification of acetylene and ethylene |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE658467A (en) |
| DE (1) | DE1468198A1 (en) |
| GB (1) | GB1020676A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4701190A (en) * | 1985-11-07 | 1987-10-20 | Linde Aktiengesellschaft | Process for recovering methylacetylene and/or propadiene |
| US8193374B2 (en) | 2008-05-15 | 2012-06-05 | Shell Oil Company | Process for the preparation of alkylene carbonate and/or alkylene glycol |
| US8273912B2 (en) | 2008-05-15 | 2012-09-25 | Shell Oil Company | Process for the preparation of an alkylene carbonate and an alkylene glycol |
| US9144765B2 (en) | 2007-05-18 | 2015-09-29 | Shell Oil Company | Reactor system, an absorbent and a process for reacting a feed |
-
1964
- 1964-12-08 DE DE19641468198 patent/DE1468198A1/en active Pending
-
1965
- 1965-01-13 GB GB151265A patent/GB1020676A/en not_active Expired
- 1965-01-18 BE BE658467A patent/BE658467A/xx unknown
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4701190A (en) * | 1985-11-07 | 1987-10-20 | Linde Aktiengesellschaft | Process for recovering methylacetylene and/or propadiene |
| US9144765B2 (en) | 2007-05-18 | 2015-09-29 | Shell Oil Company | Reactor system, an absorbent and a process for reacting a feed |
| US8193374B2 (en) | 2008-05-15 | 2012-06-05 | Shell Oil Company | Process for the preparation of alkylene carbonate and/or alkylene glycol |
| US8273912B2 (en) | 2008-05-15 | 2012-09-25 | Shell Oil Company | Process for the preparation of an alkylene carbonate and an alkylene glycol |
| US8858893B2 (en) | 2008-05-15 | 2014-10-14 | Shell Oil Company | Process for the preparation of an alkylene carbonate and an alkylene glycol |
| US9527787B2 (en) | 2008-05-15 | 2016-12-27 | Shell Oil Company | Process for the preparation of alkylene carbonate and/or alkylene glycol |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1468198A1 (en) | 1969-01-09 |
| BE658467A (en) | 1965-05-17 |
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