GB1236164A - Separation of pyrolysis gases - Google Patents
Separation of pyrolysis gasesInfo
- Publication number
- GB1236164A GB1236164A GB2538769A GB2538769A GB1236164A GB 1236164 A GB1236164 A GB 1236164A GB 2538769 A GB2538769 A GB 2538769A GB 2538769 A GB2538769 A GB 2538769A GB 1236164 A GB1236164 A GB 1236164A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fraction
- column
- withdrawing
- gaseous
- hydrocarbons
- 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
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
1,236,164. Separating hydrocarbon mixtures. H. NEWBY (Universal Oil Products Co) 19 May, 1969, No. 25387/69. Heading B1L. [Also in Division F4] Separation of a C 4 fraction containing 1.3- butadiene substantially free of C 3 H 4 i.e. methyl acetylene and propadiene, from a normally gaseous pyrolysis gas stream at an elevated pressure, e.g. between 13.6 and 20.4 atmospheres, and containing mostly hydrogen, together with C 1-5 hydrocarbons and a minor proportion of a C 5 to 209‹C fraction, is effected by feeding the pyrolysis stream into a first depropanizer column 11, withdrawing gaseous effluent hydrogen and the C 1-3 fraction therefrom at 12 and liquid bottoms at 13, feeding the latter into a debutanizer column 14, withdrawing at 15 liquid bottoms containing the C 5+ fraction from the system, withdrawing at 16 a gaseous overhead fraction containing a C 3+ fraction and C 3 H 4 hydrocarbons and passing it into a secondary depropanizer column 17 maintained at below 107‹C and at 1.7 - 13.6 atmos below the pressure of column 11, withdrawing at 19 a gaseous C 3 and C 3 H 4 fraction, and withdrawing at 18 the product C 4 fraction containing butadiene substantially free of C 3 H 4 hydrocarbons. The product withdrawn at 18 is passed to a further column (not shown) in which butadiene is extracted by a solvent, e.g. acetonitrile whilst effluent withdrawn at 19 is added to the feed entering column 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2538769A GB1236164A (en) | 1969-05-19 | 1969-05-19 | Separation of pyrolysis gases |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2538769A GB1236164A (en) | 1969-05-19 | 1969-05-19 | Separation of pyrolysis gases |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1236164A true GB1236164A (en) | 1971-06-23 |
Family
ID=10226853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2538769A Expired GB1236164A (en) | 1969-05-19 | 1969-05-19 | Separation of pyrolysis gases |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1236164A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112794784A (en) * | 2019-10-28 | 2021-05-14 | 中国石油化工股份有限公司 | Pyrolysis gas separation system and method adopting absorption-desorption |
-
1969
- 1969-05-19 GB GB2538769A patent/GB1236164A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112794784A (en) * | 2019-10-28 | 2021-05-14 | 中国石油化工股份有限公司 | Pyrolysis gas separation system and method adopting absorption-desorption |
| CN112794784B (en) * | 2019-10-28 | 2023-05-12 | 中国石油化工股份有限公司 | System and method for separating cracked gas by adopting absorption-desorption |
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