GB1068549A - Production of phthalic anhydride - Google Patents
Production of phthalic anhydrideInfo
- Publication number
- GB1068549A GB1068549A GB4940864A GB4940864A GB1068549A GB 1068549 A GB1068549 A GB 1068549A GB 4940864 A GB4940864 A GB 4940864A GB 4940864 A GB4940864 A GB 4940864A GB 1068549 A GB1068549 A GB 1068549A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anhydride
- methyl naphthalene
- phthalic anhydride
- naphthalene
- production
- 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
- C07C51/54—Preparation of carboxylic acid anhydrides
- C07C51/573—Separation; Purification; Stabilisation; Use of additives
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
Phthalic anhydride is produced by the vapour phase partial oxidation of a hydrocarbon precursor, and the mixture produced is quenched with a methyl naphthalene to give a slurry of the anhydride in methyl naphthalene, from which the anhydride is recovered. The hydrocarbon precursor may be o-xylene, naphthalene or methyl naphthalene. The quench medium separated from the anhydride may be recirculated to form part of the feed mixture to be oxidized. The off gases from the quench treatment are scrubbed with water to recover maleic acid, maleic anhydride and fumaric acid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4940864A GB1068549A (en) | 1964-12-04 | 1964-12-04 | Production of phthalic anhydride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4940864A GB1068549A (en) | 1964-12-04 | 1964-12-04 | Production of phthalic anhydride |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1068549A true GB1068549A (en) | 1967-05-10 |
Family
ID=10452241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4940864A Expired GB1068549A (en) | 1964-12-04 | 1964-12-04 | Production of phthalic anhydride |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1068549A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117986217A (en) * | 2024-04-03 | 2024-05-07 | 南京化学试剂股份有限公司 | Method for treating high-content phthalic anhydride raw material |
CN117986217B (en) * | 2024-04-03 | 2024-06-04 | 南京化学试剂股份有限公司 | Phthalic anhydride raw material treatment method |
-
1964
- 1964-12-04 GB GB4940864A patent/GB1068549A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117986217A (en) * | 2024-04-03 | 2024-05-07 | 南京化学试剂股份有限公司 | Method for treating high-content phthalic anhydride raw material |
CN117986217B (en) * | 2024-04-03 | 2024-06-04 | 南京化学试剂股份有限公司 | Phthalic anhydride raw material treatment method |
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