Heat insulation-cold stimulated-shell of pipe exterior cold combined gas solid phase fixed bed catalyst chamber

Abstract

A heat insulating-cold shocking-external cooling combined gas-solid phase fixed bed catalytic reactor comprises an upper end plate provided with a gas inlet and a manhole; a pipe shell external cooling section provided with an upper and a lower pipe plates, a group of heat exchangers, heat exchange medium inlet and outlet; and a low end plate provided with a gas outlet and a catalyst discharge port, wherein two heat insulating layers are disposed on a heat insulating reaction section; a material gas cold shocking device including a cold shocking distributor and a cold shocking pipe is disposed in the back of each adiabatic insulating layer; the height of the adiabatic reaction section is 5-30% total height of a reactor catalyst layer; catalyst is filled into the heat exchange pipe with a filling height 50-95% of total height of the reactor catalyst layer. The reactor is specially designed based on the characteristics of a reversible exothermic reaction, has the advantages of simple structure, convenient charge / discharge of catalyst; easy heating reduction of catalyst, simple temperature regulation of catalyst bed, recovery of high potential energy reaction heat and steam byproduct, and is suitable for large-scale chemical production.

Description

【Technical field】 [0001] The invention relates to the technical field of chemical reaction equipment, in particular to a combined gas-solid phase fixed-bed catalytic reactor of adiabatic-cold shock-tube-shell external cooling. 【Background technique】 [0002] In reversible exothermic reactions such as methanol synthesis, ammonia synthesis, carbon monoxide conversion, hydrogenation of organic compounds, dimethyl ether synthesis, liquid fuel synthesis, and ethylene oxide synthesis, solid particle catalysts are used, and heat affects the reaction results. And the problem of catalyst recycling; in the large-scale industrial production process, it is necessary to apply fixed bed catalytic reactor. [0003] In the field of catalytic reactor technology, the main technologies are: [0004] (1) British ICI Reactor [0005] The reactor is a four-stage adiabatic chilled axial flow reactor in a fixed bed. The heat is taken away by spraying the chilled gas into the middle of the bed thr...

AI Technical Summary

Problems solved by technology

However, the catalytic bed of the reactor has a serious wall effect, which affects the space-time yield of the catalyst, and the catalyst is easily damaged by the poison in the raw material gas and loses its activity, which affects the service life.

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