Gas replacement process, gas replacement apparatus, and nitro compound hydrogenation reaction process

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United States of America Patent

PATENT NO 12116331
SERIAL NO

17286576

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Abstract

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A gas replacement process and a gas replacement apparatus are employed, in the nitro compound hydrogenation reaction process. The gas replacement process at least includes a first step of subjecting a stream to be replaced to the gas replacement in presence of a first replacement gas, and then a second step of subjecting to the gas replacement in presence of the second replacement gas. Assuming the superficial velocity of the first replacement gas is V1, and the superficial velocity of the second replacement gas is V2, then V2/V1≥1.5.

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Patent Owner(s)

Patent OwnerAddress
CHINA PETROLEUM & CHEMICAL CORPORATIONNO 22 CHAOYANGMEN NORTH STREET CHAOYANG DISTRICT BEIJING 100728 100728
SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY SINOPEC1658 PUDONG BEI ROAD PUDONG NEW AREA SHANGHAI 201208

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Wu, Lianghua Shanghai, CN 15 58
Xu, Jun Shanghai, CN 1004 7793
Zhao, Le Shanghai, CN 42 38
Zhong, Siqing Shanghai, CN 20 80

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