发明名称 |
Process for the production of nitriles and anhydrides. |
摘要 |
An improved process is provided for the production of anhydrides and nitriles from hydrocarbons by reaction with an oxygen-containing gas comprising oxygen, air or a gas enriched in oxygen relative to air and ammonia where a nitrile is desired, 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 ammoxidation/oxidation reactor. The use of air or oxygen-enriched air in the feed to the ammoxidation/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 selectivity to the formation of the product. |
申请公布号 |
EP0318205(B1) |
申请公布日期 |
1993.12.29 |
申请号 |
EP19880310847 |
申请日期 |
1988.11.17 |
申请人 |
THE BOC GROUP, INC. |
发明人 |
RAMACHANDRAN, RAMAKRISHNAN;SHUKLA, YAGYA;MACLEAN, DONALD L. |
分类号 |
C07C253/24;B01J19/00;C07B61/00;C07C51/215;C07C51/265;C07C57/145;C07C67/00;C07C253/00;C07C255/08;C07D307/60 |
主分类号 |
C07C253/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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