Coal-water slurry gasifier and high-pressure boiler co-production steam efficiency device and method

Abstract

The invention discloses a steam efficiency enhancing device and method for co-production of a coal-water slurry gasifier and a high-pressure boiler. The synergistic device includes a coal-water slurry gasifier and a high-pressure fluidized bed boiler or a high-pressure pulverized coal boiler; the saturated steam outlet pipeline of the coal-water slurry gasifier and the drum steam of a high-pressure fluidized bed boiler or a high-pressure pulverized coal boiler The outlet pipeline is connected through a steam delivery pipeline; a valve is set on the steam delivery pipeline, and the communication between the coal-water slurry gasifier and the high-pressure fluidized bed boiler or high-pressure pulverized coal boiler is realized by controlling the valve. The invention utilizes the redundant superheating capacity of the boiler itself, is suitable for the saturated steam with the same pressure level as the steam produced by the coal-water slurry gasification furnace and the boiler, and can realize the effects of improving the steam quality and improving the utilization rate. At the same time, the present invention only adds part of the pipeline system without changing the original structure of the gasifier and boiler. Once the gasifier is shut down, the steam supply of the production system can be quickly ensured by adjusting the load of the boiler to realize safe and stable operation of the system.

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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