GB809636A - Process for the isomerization of saturated hydrocarbons - Google Patents
Process for the isomerization of saturated hydrocarbonsInfo
- Publication number
- GB809636A GB809636A GB1994857A GB1994857A GB809636A GB 809636 A GB809636 A GB 809636A GB 1994857 A GB1994857 A GB 1994857A GB 1994857 A GB1994857 A GB 1994857A GB 809636 A GB809636 A GB 809636A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fraction
- bottoms
- isomerization
- column
- feed
- 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
- C07C9/00—Aliphatic saturated hydrocarbons
- C07C9/14—Aliphatic saturated hydrocarbons with five to fifteen carbon atoms
- C07C9/16—Branched-chain hydrocarbons
- C07C9/18—Branched-chain hydrocarbons with five carbon atoms
-
- 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
- C07C5/22—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by isomerisation
- C07C5/27—Rearrangement of carbon atoms in the hydrocarbon skeleton
- C07C5/2767—Changing the number of side-chains
- C07C5/277—Catalytic processes
- C07C5/2791—Catalytic processes with metals
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C9/00—Aliphatic saturated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C9/00—Aliphatic saturated hydrocarbons
- C07C9/02—Aliphatic saturated hydrocarbons with one to four carbon atoms
- C07C9/10—Aliphatic saturated hydrocarbons with one to four carbon atoms with four carbon atoms
- C07C9/12—Iso-butane
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C9/00—Aliphatic saturated hydrocarbons
- C07C9/14—Aliphatic saturated hydrocarbons with five to fifteen carbon atoms
- C07C9/16—Branched-chain hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
In the isomerization of an isomerizable saturated hydrocarbon fraction of average molecular weight not above 72 the fraction is passed in admixture with a recycle, produced as described below, to a first fractionating column from which is obtained overhead a product isoparaffin fraction free of n-paraffins which are obtained as bottoms free of isoparaffins, a minor proportion of these bottoms is fractionated in a second fractionating column, removing as bottoms a fraction of average molecular weight greater than that of the feed and overhead a fraction of molecular weight not greater than that of the feed which overhead is mixed with the major proportion of the bottoms from the first fractionating column and isomerized in contact with a platinum-containing catalyst and the effluent from the isomerization forms the recycle mixed with the feed to the first fractionating column. The feed may be a butane fraction containing n-butane in which case isobutane is removed as product from the first column and C5 hydrocarbons are removed as bottoms from the second column, or a pentane fraction containing n-pentane when isopentane is obtained as product and C6 hydrocarbons removed from the second column. The isoparaffins may be used as such in gasolines or used for alkylation with propylene, butylenes or amylenes to yield higher molecular weight isoparaffins. The catalyst in the isomerization zone may contain 0.01 to 1.0 per cent platinum with a larger amount of combined halogen, e.g. 0.1 to 3 per cent of fluorine and chlorine, supported preferably on alumina or silica-alumina, silica-zirconia or silica-alumina-zirconia. The isomerization is preferably performed in the presence of hydrogen at 3.4-68 atmospheres, 371-510 DEG C., an LHSU of 0.5 to 5 with 0.5 to 5 mols. of hydrogen per mol. of hydrocarbon.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US59445756A | 1956-06-28 | 1956-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB809636A true GB809636A (en) | 1959-02-25 |
Family
ID=24378949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1994857A Expired GB809636A (en) | 1956-06-28 | 1957-06-25 | Process for the isomerization of saturated hydrocarbons |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1418430A1 (en) |
| GB (1) | GB809636A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892337A (en) * | 2015-05-15 | 2015-09-09 | 中国石油大学(华东) | Low-temperature isomerization method for low-carbon normal alkanes |
-
1957
- 1957-06-25 GB GB1994857A patent/GB809636A/en not_active Expired
- 1957-06-28 DE DE19571418430 patent/DE1418430A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892337A (en) * | 2015-05-15 | 2015-09-09 | 中国石油大学(华东) | Low-temperature isomerization method for low-carbon normal alkanes |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1418430A1 (en) | 1968-10-03 |
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