A composite tower methanation reactor

Abstract

The invention provides a composite tower type methanation reactor. The composite tower type methanation reactor comprises a different-diameter tower pressure-bearing casing, a heating medium distributing large ring pipe, heating medium column pipes, a heating medium collecting large ring pipe, a pipe box, a winding type heat exchange pipe, a winding type heat exchange pipe supporting pipe, a heating medium inlet, bent pipes and a heating medium outlet. The heating medium distributing large ring pipe is distributed at the bottom of the casing and is directly connected with the heating medium column pipes; the heating medium column pipes is connected with the heating medium collecting large ring pipe through the bent pipes; the heating medium inlet is formed in the heating medium distributing large ring pipe; the heating medium outlet is formed in the heating medium collecting large ring pipe; the winding type heat exchange pipe winds the winding type heat exchange pipe supporting pipe,and enters and exits the casing through the pipe box; two ends of the winding type heat exchange pipe supporting pipe are fixed to the inner wall of the middle part of the casing. According to the reactor, a flow is simplified; the reaction equilibrium is deepened; the arrangement of a methanation reactor and the arrangement of a steam generator are reduced; meanwhile, the problem of heat stress of a high-temperature pipeline can be solved.

Description

technical field [0001] The invention relates to the technical field of methanation reaction, in particular to a composite tower methanation reactor. Background technique [0002] Methanation is the core technology in the preparation process of coal-to-substitute natural gas, and the methanation reactor is the core equipment. The methanation reaction has the characteristics of strong heat release and volume reduction. At present, the methanation reactors of the existing industrial plants are all adiabatic fixed-bed reactors. Long-term exposure to extreme temperature affects its service life, and high temperature limits the equilibrium depth of methanation reaction. The product requirements can only be achieved by increasing the number of reactors. At the same time, a large amount of reaction heat is recovered by steam generated by the steam generator outside the reactor. , making the process complicated, increasing equipment investment and land occupation; on the other hand,...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems existing in the existing methanation reactor, and to provide a composite tower methanation reactor, which can integrate the characteristics and advantages of adiabatic fixed bed reactor, isothermal reactor, and winding heat exchanger, Simplifies the process, deepens the reaction balance, reduces the settings of methanation reactors and steam generators, and can solve the thermal stress problem of high-temperature pipelines

Images