Aromatic hydrocarbon ammoxidation combined fluidized bed reaction device and aromatic hydrocarbon ammoxidation combined fluidized bed reaction method

A technology of fluidized bed reactor and reaction device, which is applied in the direction of hydrocarbon ammoxidation preparation, chemical instruments and methods, organic chemistry, etc., and can solve the problem of inability to maintain production due to online emergency repair of heat extractors, reduce production process economy, and insufficient raw materials Utilize and other problems to achieve the effect of improving mass transfer and fluidization quality, improving fluidization quality and heat transfer level, and increasing the time of long-term operation
CN111111562AActive Publication Date: 2020-05-08CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2020-05-08

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Abstract

The invention relates to an aromatic hydrocarbon ammoxidation combined fluidized bed reaction device and an aromatic hydrocarbon ammoxidation combined fluidized bed reaction method. In the prior art,the heat regulation range in the reactor of the existing device is small, the heat collector cannot be repaired on line to keep production after being abraded, the ammonia ratio is large, the air ratio is large and the raw material utilization rate is low. A purpose of the invention is mainly to solve the problems in the prior art. The invention discloses an aromatic hydrocarbon ammoxidation combined fluidized bed reaction device and a reaction method thereof. According to the technical scheme, aromatic hydrocarbon / ammonia is vaporized and then enters a reactor together with air from a gas distribution chamber, an aromatic hydrocarbon ammoxidation reaction is carried out under the action of a catalyst, heat released in the reaction process is brought into an oxygen supply heat exchanger through the catalyst, efficient heat exchange is carried out under the action of a strong mixing member while catalyst lattice oxygen supplementing treatment is carried out, and then the low-temperaturehigh-lattice-oxygen catalyst circularly returns into the reactor to continuously participate in the aromatic hydrocarbon ammoxidation reaction. By adopting the technical scheme, the technical problems are well solved. The device and the method can be used in production of aromatic nitrile by aromatic ammonia oxidation.
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Description

technical field

[0001] The invention relates to an aromatic hydrocarbon ammoxidation combined fluidized bed reaction device and a reaction method thereof. Background technique

[0002] Aromatic nitriles are a class of substances directly connected by cyano groups to aromatic rings. The cyano groups connected to the aromatic rings have high reactivity and can be produced through reactions such as hydrolysis, addition, polymerization, hydrogenation, and halogenation. It is a kind of fine chemical product, which is widely used in the fields of pesticides, medicines, dyes, food additives and polymer monomers, and is an important class of fine chemical intermediates.

[0003] There are many methods for the production of aromatic nitriles, but the most simple, effective and economical method is to use the corresponding aromatic hydrocarbons, ammonia and air to carry out direct ammoxidation reaction to obtain aromatic nitrile products. The reaction of aromatics or aromatics with s...

Claims

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