Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1989-05-24
1991-01-22
Brust, Joseph Paul
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549248, 549249, 549262, C07D30733, C07D30789
Patent
active
049872397
ABSTRACT:
An improved process is provided for the production of anhydrides from hydrocarbons by reaction with an oxygen-containing gas comprising oxygen, air or a gas enriched in oxygen relative to air, in the presence of a suitable catalyst. In the process, a selective separator provides recycle of a substantial portion of the unreacted hydrocarbon as well as for a controlled amount of a gaseous flame suppressor in the system. The gaseous flame suppressor comprises a substantially unreactive hydrocarbon containing 1 to 5 carbon atoms, carbon dioxide, and nitrogen when present in the feed to the oxidation reactor. The use of air or oxygen-enriched air in the feed to the oxidation reactor is particularly advantageous from an economic view in combination with a pressure swing adsorption unit as the selective separator. The process is characterized by high selectively to the formation of the anhydride product.
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M. Malow, "Benzene or Butane for MAN," Hydrocarbon Processing, pp. 149-153 (Nov. 1980).
H. Bosch et al., "Selective Oxidation of n-Butane to Maleic Anhydride Under Oxygen-Deficient Conditions Over V-P-O Mixed Oxides," Applied Catalysis, 323-337 (1987).
D. L. Trimm, Design of Industrial Catalysts, pp. 176-187, Elsevier Scientific Publishing Company (1980).
S. C. Arnold et al., "Use Fluid Bed Reactor for Maleic Anhydride from Butane," Hydrocarbon Processing, pp. 123-126 (Sep. 1985).
Maclean Donald L.
Ramachandran Ramakrishnan
Shukla Yagya
Brust Joseph Paul
Nemetz Carol A.
Pearlman Robert I.
The BOC Group Inc.
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