Slurry bed reaction system

Abstract

The invention discloses a slurry bed reaction system, comprising: a reactor, a first heat exchanger, a raw material pipe, a bypass pipe and a gas supply pipe, a gas inlet and a gas outlet are formed on the reactor, and there is a slurry in the reactor ; The first heat exchanger is arranged on the reactor, and the first heat exchanger has a heat exchange medium inlet and a heat exchange medium outlet; the raw material pipe is used to transport raw material gas into the reactor, and the raw material pipe is connected with the gas inlet; the bypass pipe One end is connected with the raw material pipe, and the other end of the bypass pipe is connected with the heat exchange medium inlet; the gas supply pipe is connected with the gas inlet, and the flow rate of the gas in the gas supply pipe is not less than the flow rate of the gas in the bypass pipe. According to the slurry bed reaction system of the present invention, the reaction temperature can be effectively controlled to prevent overheating, and in the course of operation, the load of the system that provides raw material gas to the system and the pressure in the reactor do not change, thereby ensuring the supply The normal operation of the raw gas pipeline system improves the stability and reliability of the slurry bed reaction system.

Description

technical field [0001] The invention relates to the technical field of reactors, in particular to a slurry bed reaction system. Background technique [0002] The slurry bed reaction system is a gas-liquid-solid multiphase reaction device, which can be used for heterogeneous catalytic reaction systems such as acetylene catalytic hydrogenation to ethylene, Fischer-Tropsch synthesis, etc. A large amount of heat of reaction will be released during the reaction of hydrogen to ethylene. If the heat of reaction is not removed in time, it will easily lead to overheating in the reaction device, which is not conducive to the progress and operation of the reaction. In severe cases, the catalyst will be deactivated or even lead to safety accidents. [0003] In related technologies, the slurry bed reaction system generally adopts a built-in or external heat exchanger, and removes the reaction heat generated in the reaction device through heat exchange and cooling to ensure that the temp...

AI Technical Summary

Problems solved by technology

However, when the runaway temperature is not serious, increasing the amount of coolant can quickly reduce the temperature in the reaction device to a reasonable reaction temperature range, but when the runaway temperature is serious, it is difficult to reduce the temperature in the reaction device by increasing the amount of coolant. The temperature drops rapidly to the reasonable reaction temperature range, especially when the cooling system is abnormal, it is more difficult to effectively deal with the phenomenon of overheating

When the overheating cannot be effectively avoided by cooling, the emergency shutdown of the gas supply compressor to stop the gas supply to the slurry bed reaction system has to be adopted to prevent the overheating, which will cause the compressor to start and stop frequently, and seriously affect the supply The normal operation of raw gas equipment

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