GB816231A - Process for the separation of acetylene-free ethylene from gas mixtures - Google Patents
Process for the separation of acetylene-free ethylene from gas mixturesInfo
- Publication number
- GB816231A GB816231A GB13053/56A GB1305356A GB816231A GB 816231 A GB816231 A GB 816231A GB 13053/56 A GB13053/56 A GB 13053/56A GB 1305356 A GB1305356 A GB 1305356A GB 816231 A GB816231 A GB 816231A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ethylene
- solvent
- liquid
- line
- acetylene
- 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
- C07C7/005—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
- C07C7/11—Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
-
- 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
- Y02P20/10—Process efficiency
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
<PICT:0816231/III/1> Ethylene free from acetylene is obtained from a gas mixture containing low aliphatic hydrocarbons by separating therefrom a C2 hydrocarbon stream by rectification, removing ethane by rectification, absorbing acetylene in a selective liquid solvent at a temperature at or near the liquefaction temperature of the C2 hydrocarbon stream, separating liquid ethylene by rectification from the effluent and using part of the liquid ethylene so obtained as a scrubbing liquid during the separation by rectification of said liquid ethylene, the greater part of ethylene absorbed in the selective solvent being regenerated by heat exchange with regenerated solvent and regenerating the solvent by heating and recovering acetylene and residual ethylene; in a modification, ethane is not removed prior to the acetylene absorption and the ethane-ethylene mixture recovered from the solvent by heat exchange with regenerated solvent is rectified to obtain liquid ethylene part of which is used as a scrubbing liquid in the solvent absorption of the acetylene. The selective solvent is preferably acetone mixed with liquid ethylene. Referring to Fig. 1, a C2 cut enters distillation column 2 by line 1, liquid ethylene being supplied at the head by line 5 from the product stream; ethane is withdrawn by line 4. An acetylene-ethylene mixture passes by line 3 to scrubbing tower 12 fed with acetone by line 13 and liquid ethylene by line 15; product ethylene leaves by line 6 and is liquefied. Solvent containing acetylene and ethylene is heated in heat-exchanger 24 by regenerated solvent liberating ethylene which is returned to the base of the scrubber by line 25. The solvent is regenerated in tower 27 and returned via heat-exchanger 24 to the scrubber. Acetylene together with some ethylene is recovered by line 28. The liquid ethylene supplied to the top of scrubber 12 may alternatively be obtained by partially liquefying the ethylene effluent with a refrigerating coil in the head of the scrubber using product ethylene as the refrigerating liquid.ALSO:Ethylene free from acetylene is obtained from a gas mixture containing low aliphatic hydrocarbons by separating therefrom a C2 hydrocarbon stream by rectification, removing ethane by rectification, absorbing acetylene in a selective liquid solvent at a temperature at or near the liquefaction temperature of the C2 hydrocarbon stream, separating liquid ethylene by rectification from the effluent and using part of the liquid ethylene so obtained as a scrubbing liquid during the separation by rectification of said liquid ethylene, the greater part of ethylene <PICT:0816231/IV (b)/1> absorbed in the selective solvent being regenerated by heat exchange with regenerated solvent, and regenerating the solvent by heating and recovering acetylene and residual ethylene; in a modification, ethane is not removed prior to the acetylene absorption and the ethaneethylene mixture recovered from the solvent by heat exchange with regenerated solvent is rectified to obtain liquid ethylene part of which is used as a scrubbing liquid in the solvent absorption of the acetylene. The selective solvent is preferably acetone mixed with liquid ethylene. Referring to Fig. 1, a C2 cut enters distillation column 2 by line 1, liquid ethylene being supplied at the head by line 5 from the product stream; ethane is withdrawn by line 4. An acetylene-ethylene mixture passes by line 3 to scrubbing tower 12 fed with acetone by line 13 and liquid ethylene, by line 15; product ethylene leaves by line 6 and is liquefied. Solvent containing acetylene and ethylene is heated in heat-exchanger 24 by regenerated solvent liberating ethylene which is returned to the base of the scrubber by line 25. The solvent is regenerated in tower 27 and returned via heatexchanger 24 to the scrubber. Acetylene together with some ethylene is recovered by line 28. The liquid ethylene supplied to the top of scrubber 12 may alternatively be obtained by partially liquefying the ethylene effluent with a refrigerating coil in the head of the scrubber using product ethylene as the refrigerating liquid.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE816231X | 1955-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB816231A true GB816231A (en) | 1959-07-08 |
Family
ID=6734939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB13053/56A Expired GB816231A (en) | 1955-04-27 | 1956-04-27 | Process for the separation of acetylene-free ethylene from gas mixtures |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB816231A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3272885A (en) * | 1962-10-01 | 1966-09-13 | Phillips Petroleum Co | Separation of ethylene from acetylene |
| US3827245A (en) * | 1971-09-22 | 1974-08-06 | Stone & Webster Eng Corp | Recovery and purification of ethylene from direct hydration ethanol vent gas streams |
-
1956
- 1956-04-27 GB GB13053/56A patent/GB816231A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3272885A (en) * | 1962-10-01 | 1966-09-13 | Phillips Petroleum Co | Separation of ethylene from acetylene |
| US3827245A (en) * | 1971-09-22 | 1974-08-06 | Stone & Webster Eng Corp | Recovery and purification of ethylene from direct hydration ethanol vent gas streams |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3531915A (en) | Removing water vapor from cracked gases | |
| US3530199A (en) | Ethylene production process | |
| US2217429A (en) | Separation of acetylene from gaseous mixtures containing it | |
| GB294611A (en) | Process for the separation of gas mixtures | |
| GB745406A (en) | Improvements in or relating to separation of carbon dioxide from ammonia | |
| US2250949A (en) | Process for the separation of hydrocarbons from gases containing them | |
| US3607963A (en) | Separation of acetylene and ethylene from cracked gas | |
| GB1257372A (en) | ||
| GB1043914A (en) | Improvements in and relating to ethylene recovery systems | |
| US3252269A (en) | Removal of acid constituents from gas mixtures using acetoxy acetone | |
| US2990914A (en) | Absorption system | |
| GB816231A (en) | Process for the separation of acetylene-free ethylene from gas mixtures | |
| US2736756A (en) | Recovery of ethylene | |
| GB947923A (en) | Process for the manufacture of olefines | |
| US2587689A (en) | Separation of acetylene from gaseous hydrocarbon mixtures | |
| US3837144A (en) | Separation of acetylene from ethylene-bearing gases | |
| US2787335A (en) | Removal of acetylene components from gas | |
| US2809710A (en) | Method and apparatus for the removal of acetylene from gases containing ethylene | |
| US3023842A (en) | Acetylene purification | |
| US3242646A (en) | Process for removing acid constituents from gaseous mixtures | |
| US2915881A (en) | Separation of gases | |
| US3471584A (en) | Joint separation of acetylene and ethylene from cracked gases | |
| GB832060A (en) | Process and apparatus for purifying hydrogen | |
| US3016985A (en) | Method of recovery of acetylene and ethylene | |
| US3267028A (en) | Separation of wet pyrolysis gases by sorbent treating and fractionation |