Entrained-flow bed gasification equipment

Abstract

According to the application, by means of the design of the radiation waste boiler and the convection waste boiler, compared with a technology only with a radiation waste boiler or a convection wasteboiler, the equipment can generate more steam, the energy efficiency and the coal utilization rate can be remarkably improved. A chilling chamber is coupled to the lower part of the convection waste heat boiler, so that water-gas ratio can be adjusted according to the requirements of subsequent devices while the raw gas is cooled and dedusted. The technological process is more optimized, and the investment of subsequent equipment such as a venturi and a carbon washing tower is reduced; meanwhile, a plurality of burner devices are uniformly distributed in the bottom area of the combustion chamber along the periphery of the combustion chamber barrel, so that compared with a single-burner device gasification technology, the entrained-flow bed gasification equipment has the advantages that themulti-burner device can enable pulverized coal and oxygen to form a stronger turbulence effect in the gasification furnace, the gasification furnace is easy to amplify, the carbon conversion rate cannot be reduced, and the entrained-flow bed gasification equipment is high in applicability, high in coal utilization rate and energy efficiency and more optimized in technological process.

Description

technical field [0001] The present application relates to the technical field of coal gasification, in particular to an entrained bed gasification equipment. Background technique [0002] The gasification reaction of coal hydrogenation is a thermochemical process, using pulverized coal (usually pulverized coal with a diameter of less than 75 μm) as raw material and hydrogen as the gasification agent to generate crude gas and light tar under high temperature and high pressure conditions. Among them, the crude gas can be obtained through separation and other operations to obtain methane-enriched gas. At present, the pulverized coal hydrogasification process mainly adopts entrained bed gasification technology. [0003] Entrained bed gasification technology is an important way to develop clean coal gasification technology. According to different coal transportation methods, entrained bed gasification technology can be divided into dry coal powder feeding and coal water slurry f...

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Problems solved by technology

[0005] This application provides an entrained bed gasification equipment, which adopts the design of radiant waste boiler and convection waste boiler to solve the problem of high comprehensive thermal efficiency of Shell waste boiler gasification technology in the prior art, but high energy consumption, complex equipment and expensive investment. The problem of relatively low input and output, compared with only radiation waste boiler or only convection waste boiler technology, this equipment can generate more steam, which can significantly improve energy efficiency and coal utilization

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