Combined production steam synergistic device and method for coal water slurry gasification furnace and high-pressure boiler

Abstract

The invention discloses a combined production steam synergistic device and method for a coal water slurry gasification furnace and a high-pressure boiler. The synergistic device comprises a coal waterslurry gasification furnace and a high-pressure fluidized bed boiler or a high-pressure pulverized coal boiler, a saturated steam outlet pipeline of the coal water slurry gasification furnace is communicated with a steam-clad steam outlet pipeline of a high-pressure fluidized bed boiler or a high-pressure pulverized coal boiler through a steam conveying pipeline, a valve is arranged on the steamconveying pipeline, and communication between the coal water slurry gasification furnace and the high-pressure fluidized bed boiler or the high-pressure pulverized coal boiler is realized through thecontrol valve. According to the method, the surplus overheating capacity of the boiler is utilized, and the boiler is suitable for saturated steam with the equivalent steam production pressure grade of the coal water slurry gasification furnace and the boiler, so that the effect of improving the steam quality and improving the utilization rate can be realized, meanwhile, only a part of the pipeline system is added, so that the original structure of the gasification furnace and the boiler is not changed, and once the gasification furnace is parked, by adjusting the load of the boiler, steam supply of the production system can be rapidly ensured, and safe and stable operation of the system is realized.

Description

technical field [0001] The invention relates to a steam efficiency enhancing device and method for co-production of a coal-water slurry gasifier and a high-pressure boiler. Background technique [0002] In modern coal chemical production, the coal-water slurry gasifier is widely used and has the characteristics of wide adaptability to raw materials. The Jinhua furnace, led by the Shanxi Clean Energy Research Institute of Tsinghua University and jointly developed by Yangmei Fengxi and Yangmei Chemical Machinery, is in Based on the raw coal-water slurry gasifier, Jinhua Furnace 3.0 was developed. The post-treatment of high-temperature gas at the outlet of the gasifier adopts a radiation-type waste boiler process to recover the heat of high-temperature combustion, and gradually become a waste boiler for coal-water slurry gasifier. The process replaces the chilling process, and the by-product of high-pressure saturated steam is a representative of the coal-water slurry energy-sa...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a coal-water slurry gasifier and high-pressure boiler co-production steam synergistic device and method. The present invention solves the problems of low quality and difficult utilization of the saturated steam produced by the existing heat recovery of the gasifier , for the promotion of energy-saving coal-water slurry gasifier technology to clear away the obstacles to the reuse of saturated steam, to minimize product costs, reduce production energy consumption, and deeply recover the heat of the combustion system of the gasifier

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