a closed thermal 2 Thermal insulation red coke crushing, screening and pre-storage method and device

Abstract

The invention discloses a method and a device for crushing, screening and prestoring red coke in a closed hot N2 heat preservation condition, namely a method and a device developed for high-temperature pyrolysis of the red coke by directly employing pulverized coal. The method comprises the following steps: unloading a high-temperature pyrolysis product, namely the red coke of the pulverized coal at 950-1050 DEG C in 0.1MPa in the hot N2 heat preservation condition into a red coke hopper from a red coke tank; uniformly conveying to a crusher for crushing through a feeding machine; regulating, screening and then conveying to an afterheat recovery temperature-control red coke product cabin for prestoring; conveying into a fluidized bed and a mobile bed red coke boiler for combusting and / or a fluidized bed or a fixed bed red coke gasifier for gasifying through a red coke material cup at 350-850 DEG C; and removing dust through a dust remover, and introducing tail gas into a hot N2 heat preservation circulating system. The method and the device disclosed by the invention can meet the requirements of the red coke combustion boiler and / or the red coke gasifier on particle size in the method for the high-temperature pyrolysis of the red coke by directly employing the pulverized coal; the sensible heat loss of the red coke is reduced; the explosion caused by over-high dust concentration is effectively prevented; the dust pollution is solved from the source; and the environment benefits are obviously significant.

Description

technical field [0001] The invention relates to a pulverized coal high-temperature pyrolysis red coke processing method and a device thereof, and is directed to a method and a device for crushing, screening and pre-storing red coke in the method of directly utilizing pulverized coal high-temperature pyrolysis red coke. Background technique [0002] This patent application is aimed at the invention patent applied by the applicant on December 17, 2014. 2 The invention and creation of the method of crushing, screening and pre-storing under heat preservation conditions and its device, its application number is 201410777285.X, and the title of the invention is "a method for directly using pulverized coal at high temperature to pyrolyze red coke". In the method, red coke, a high-temperature pyrolysis product of bituminous coal and lignite pulverized coal, is directly used as a power fuel for boilers to produce steam and generate electricity, or as a gasification raw material for a...

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Problems solved by technology

[0008] The specific technical problem to be solved by the present invention is: in the invention patent of "a method for directly utilizing pulverized coal high-temperature pyrolysis red coke", the red coke produced by pulverized coal high-temperature pyrolysis is directly used as a power fuel for boilers to produce steam and generate electricity Or used as gasification raw material for gasifier to produce synthesis gas, especially on the basis of traditional pulverized coal heat, electricity and chemical multi-generation process, make full use of and revitalize domestic excess coking production capacity, and increase the use of inferior and low-rank pulverized coal Efficiency, to solve the problem of irreversible heat loss in conventional coal combustion at home and abroad, to achieve a substantial increase in thermal efficiency of power fuels and efficient use of carbon in gasification raw materials, based on this to solve the problem of fluidized bed and moving bed red coke boilers on power Fuel particle size and fluidized bed and fixed bed red coke gasifiers on the particle size and temperature of gasification raw materials and environmental pollution

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