GB779629A - Manufacture of butadiene -1, 3 - Google Patents
Manufacture of butadiene -1, 3Info
- Publication number
- GB779629A GB779629A GB20533/53A GB2053353A GB779629A GB 779629 A GB779629 A GB 779629A GB 20533/53 A GB20533/53 A GB 20533/53A GB 2053353 A GB2053353 A GB 2053353A GB 779629 A GB779629 A GB 779629A
- Authority
- GB
- United Kingdom
- Prior art keywords
- extraction
- tower
- ketone
- butadiene
- fraction
- 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
- C07C11/00—Aliphatic unsaturated hydrocarbons
- C07C11/12—Alkadienes
- C07C11/16—Alkadienes with four carbon atoms
- C07C11/167—1, 3-Butadiene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/32—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with formation of free hydrogen
- C07C5/327—Formation of non-aromatic carbon-to-carbon double bonds only
- C07C5/333—Catalytic processes
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Butadiene-1,3 is prepared by catalytic dehydrogenation of a gaseous hydrocarbon mixture containing a substantial quantity of n-butylenes of greater saturation than butadiene-1,3 at elevated temperature, e.g. 1000-1200 DEG F., utilizing a calcium-nickel phosphate catalyst, fractionation of the products to isolate the C4 fraction, and extraction of butadiene-1,3 from the C4 fraction with copper ammonium acetate, characterized by extracting with water, prior to the butadiene extraction, most of the ketones formed during the dehydrogenation reaction. The extraction with water is preferably affected prior to the fraction step, though it may be effected after. The gaseous reaction product from the dehydrogenation step in preferably cooled to 160 DEG F. and passed upward through a packed tower and is washed by a stream of ketone-free water passing downward through the tower. The substantially ketone-free gases leave the top of the tower and pass to the fractionation and butadiene extraction steps. The water collecting at the bottom of the tower and containing extracted ketones is continuously removed and may be fed to a stripping tower where the ketones are stripped out by steam. The ketone-free water is returned from the bottom of the stripping tower to the top of the extraction tower. With a rate of flow of gases of the order of 25,000 to 40,000 lb. per hour, a suitable rate of circulation of water through the extraction tower is 30,000 lb. per hour. The ketone impurities removed in this way are chiefly acetone, methyl ethyl ketone and methyl vinyl ketone. The butadiene extraction may be performed in two steps, firstly contacting the C4 fraction with a small amount of the copper ammonium acetate whereby the more soluble acetylenes are removed, and secondly contacting the substantially acetylene-free C4 fraction with a larger amount of copper ammonium acetate to extract the butadienes. A suitable method of carrying out the extraction is described in Specification 779,402. The acetylenes extracted in the first step may be recycled to the dehydrogenation reaction to improve the yield of ketone by-products. Specification 634,580 also is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA779629X | 1952-08-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB779629A true GB779629A (en) | 1957-07-24 |
Family
ID=4172450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20533/53A Expired GB779629A (en) | 1952-08-14 | 1953-07-23 | Manufacture of butadiene -1, 3 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB779629A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10155704B2 (en) | 2015-09-25 | 2018-12-18 | Uop Llc | Processes and apparatuses for production of butadiene |
-
1953
- 1953-07-23 GB GB20533/53A patent/GB779629A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10155704B2 (en) | 2015-09-25 | 2018-12-18 | Uop Llc | Processes and apparatuses for production of butadiene |
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