Gas distributor for slurry bed reactor

Abstract

The invention discloses a gas distributor for a slurry bed reactor so as to solve the problem that bubbles cannot be broken well under the condition of large air input, gases cannot be uniformly distributed and a check ball will frequently bounce in an air-flow when a present bellcap distributor is used for gas distribution and feeding of a slurry bed reactor. The gas distributor provided by the invention is provided with a bellcap (3), an air inlet pipe (1) and a check ball (2). Gas distribution holes (32) are arranged slanting upwards on a cylindrical shell of the bellcap. The air inlet pipe is composed of an air inlet pipe upper-portion and an air inlet pipe lower-portion. The air inlet pipe upper-portion is provided with an air inlet pipe upper-portion middle-lower opening (5) and an air inlet pipe upper-portion top opening (6). An inner cavity of the air inlet pipe is composed of an inverted frutum conical air inlet pipe lower-portion upper core space, an air inlet pipe lower-portion bottleneck and a frutum conical air inlet pipe lower-portion lower core space which are arranged from top to bottom. The check ball is supported on the surface of the air inlet pipe lower-portion upper core space when placed at a sealing position. The gas distributor provided by the invention can be used in a slurry bed reactor for gas distribution and feeding.

Description

technical field [0001] The invention relates to a gas distributor for a gas-liquid-solid three-phase slurry bed reactor. Background technique [0002] Gas-liquid-solid three-phase slurry bed reactors are widely used in the process of Fischer-Tropsch synthesis. For the reaction process with a large reaction heat, the use of a three-phase slurry bed reactor can effectively remove the reaction heat, realize the isothermal operation of the reactor, and ensure the normal operation of the reactor. In a three-phase slurry bed reactor, the gas distributor is an important part to ensure that the gas feed is evenly distributed in the slurry bed and to increase the gas holdup of the slurry. The gas distributors for slurry bed reactors mentioned in the current literature mainly include orifice distributors, packed distributors, sintered metal plate distributors, nozzle distributors, tubular distributors and bubble cap distributors, etc. They each have their own conditions of use and s...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of gas distributor for slurry bed reactor, to solve the problem that existing bubble cap distributor is used for distributing gas feed in slurry bed reactor when the gas flow rate is larger Under certain conditions, the bubbles cannot be broken well and the gas is evenly distributed, and the check ball will frequently jump in the airflow, etc.

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