GB805110A - Process for the oxidation of paraffins - Google Patents
Process for the oxidation of paraffinsInfo
- Publication number
- GB805110A GB805110A GB1571756A GB1571756A GB805110A GB 805110 A GB805110 A GB 805110A GB 1571756 A GB1571756 A GB 1571756A GB 1571756 A GB1571756 A GB 1571756A GB 805110 A GB805110 A GB 805110A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light ends
- waste gases
- oxidation
- oxidized
- cooled
- 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
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
- C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
- C07C51/215—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of saturated hydrocarbyl groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A C4-8 paraffin hydrocarbon is oxidized in the liquid phase at elevated temperatures and pressures with a gas consisting of or comprising molecular oxygen, to produce aliphatic carboxylic acids of 1-4 carbon atoms, the primary oxidation product is distilled to separate as light ends the materials boiling in the presence of water below 99 DEG C., the oxidation waste gases are contacted, preferably at the reaction pressure, at a temperature not above - 1 DEG C. with the light ends whereby organic materials are condensed from the waste gases, and the light ends and condensed material are oxidized in the liquid phase at elevated temperatures and pressures with a gas consisting of or comprising molecular oxygen to produce additional quantities of aliphatic C1-4 carboxylic acids, e.g. by recycling. In a preferred embodiment the oxidation waste gases are cooled to about 30 DEG C. to condense out part of the volatile organic material, before being contacted with the light ends. Such contact is preferably made at - 1 DEG to - 50 DEG C., more preferably at - 10 DEG to - 40 DEG C. The light ends may also be cooled before contact with the waste gases. In the preferred method the waste gases after contact with the light ends are expanded adiabatically to furnish part of the cooling necessary. In a variation the waste gases are cooled in the presence of light ends containing in solution filtered oxidation products of boiling-point above about 140 DEG C. (the filter residue comprising largely succinic acid), the organic material being recycled to the oxidation stage. Preferred hydrocarbon starting materials have a boiling range not exceeding about 100 DEG C. In an example related to the diagram of the apparatus (not shown) a feed of boiling range of approximately 30-70 DEG C. is oxidized with air at 175 DEG C. and 630 lb. per square inch. Specification 743,990 is referred to.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1571756A GB805110A (en) | 1956-05-22 | 1956-05-22 | Process for the oxidation of paraffins |
MY6100113A MY6100113A (en) | 1956-05-22 | 1961-12-31 | Process for the oxidation of paraffins |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1571756A GB805110A (en) | 1956-05-22 | 1956-05-22 | Process for the oxidation of paraffins |
Publications (1)
Publication Number | Publication Date |
---|---|
GB805110A true GB805110A (en) | 1958-11-26 |
Family
ID=10064211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1571756A Expired GB805110A (en) | 1956-05-22 | 1956-05-22 | Process for the oxidation of paraffins |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB805110A (en) |
MY (1) | MY6100113A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10225154A1 (en) * | 2002-06-06 | 2004-01-15 | Robert Bosch Gmbh | Soft magnetic powder composite, process for its production and its use |
-
1956
- 1956-05-22 GB GB1571756A patent/GB805110A/en not_active Expired
-
1961
- 1961-12-31 MY MY6100113A patent/MY6100113A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10225154A1 (en) * | 2002-06-06 | 2004-01-15 | Robert Bosch Gmbh | Soft magnetic powder composite, process for its production and its use |
DE10225154B4 (en) * | 2002-06-06 | 2012-06-06 | Robert Bosch Gmbh | Soft magnetic powder composite, process for its preparation and its use |
Also Published As
Publication number | Publication date |
---|---|
MY6100113A (en) | 1961-12-31 |
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