Feeding method and system for slurry and flour coupled gasification
A feeding method and slurry powder technology, applied in the field of coal gasification, can solve the problems of feeding process introduction, gasifier start-up failure, difficulty in realizing three-phase coupled gasification, etc.
Active Publication Date: 2018-02-27
ENN SCI & TECH DEV
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Problems solved by technology
Pass pulverized coal, coal water slurry and oxidant into the combustion chamber for gasification reaction under high temperature and high pressure to generate synthesis gas (industrial gas) mainly composed of carbon monoxide and hydrogen. The feeding process will be introduced in detail, and the feeding process plays a vital role in the entire gasification process. If the feeding process is unstable, it will be difficult to achieve stable three-phase coupling gasification, and even cause the gasifier to fail to start up.
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] In describing the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than in...
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The invention relates to the technical field of coal gasification, in particular to a feeding method and system for slurry and flour coupled gasification, and aims to realize safe and stable feeding of coal water slurry and pulverized coal. The feeding method for slurry and flour coupled gasification provided by the embodiment of the invention comprises the following steps: feeding coal water slurry and pulverized coal in a preset oxygen-coal ratio; in the feeding process, detecting the furnace charging flow of the coal water slurry, the furnace charging flow of the pulverized coal and the furnace charging flow of an oxidizing agent respectively, and adjusting the furnace charging flow of at least one of the coal water slurry, the pulverized coal and the oxidizing agent according to the preset oxygen-coal ratio, so that the coal water slurry, the pulverized coal and the oxidizing agent can be fed at furnace charging flows satisfying oxygen-coal ratios corresponding to different feedingstages at different feeding stages. The feeding method and system disclosed by the embodiment of the invention are applied to methane production by coal gasification.
Description
technical field [0001] The invention relates to the technical field of coal gasification, in particular to a feeding method and system for slurry-powder coupling gasification. Background technique [0002] Coal gasification refers to a series of chemical reactions between organic matter in coal and gasification agent (such as oxygen) at a certain temperature and pressure to convert solid coal into 2 、CH 4 Combustible gases such as CO and 2 , N 2 The current common coal gasification technology mainly includes coal water slurry gasification technology, pulverized coal gasification technology and multi-component slurry gasification technology. same. [0003] The patent document with the application number CN101760244A introduces a three-phase multi-raw material pressurized coal gasification device and its process. Pass pulverized coal, coal water slurry and oxidant into the combustion chamber for gasification reaction under high temperature and high pressure to generate sy...
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IPC IPC(8): C10J3/46
CPCC10J3/46C10J2300/09
Inventor 刘刚付伟贤
Owner ENN SCI & TECH DEV