Saturation tower/isothermal furnace series/heat isolation furnace CO transformation technology

Abstract

The invention relates to saturation tower/isothermal furnace series/heat isolation furnace CO transformation technology, which comprises the following steps: feeding gas-liquid-separated crude gas into a saturation tower after removing impurity from the crude gas; completing the saturation tower with medium-pressure overheat steam from a pipe network after increasing humidity and temperature of the interior of the saturation tower; increasing the temperature and the humidity again; dividing into two strands, namely a first strand and a second strand, wherein the volume of the first strand is equal to 20-40% of the total volume; feeding the first strand into an isothermal transformation furnace so as to process depth transformation reaction; mixing transformed mixing gas of the isothermal transformation furnace with the second strand of the crude gas so as to feed into a gas-liquid mixer; after increasing the humidity of the medium-pressure boiler water from a boundary area so as to feed into a first heat isolating transformation furnace, and continuously processing the transformation reaction. Compared with the prior art, saturation tower series/isothermal furnace CO transformation technology solves a series of problems of long saturation hot water tower high moisture rate CO transformation technology procedure, too many heat isolation reaction grade, large system pressure drop, high equipment investment, easy over-temperature transformation furnace, short catalyst service life and the like.

Description

Technical field [0001] The invention relates to a CO conversion process, in particular to a saturation tower isothermal furnace string adiabatic furnace CO conversion process. Background technique [0002] At the beginning of this century, my country has successively introduced more than a dozen large-scale coal chemical plants using Shell pulverized coal gasification technology. This technology has low coal quality requirements, high effective components in syngas, low operating costs and is environmentally friendly. The crude synthesis gas generated by Shell pulverized coal gasification is cooled by a waste heat boiler. The dry volume content of CO in the crude synthesis gas is as high as 60% or more, and the volume content of water vapor is less than 20%. The crude synthesis gas has low water vapor content and high CO content. Notable features. [0003] When my country introduced the Shell pulverized coal gasification technology, the commercial operation of this technology was ...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a saturated tower isothermal furnace series adiabatic furnace CO conversion process in view of the status quo of the prior art, so as to solve the problem of long CO con

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