Coal water slurry and powdered coal coupled gasification feeding method and system thereof
A feeding method and slurry powder technology, which is applied in the field of coal gasification, can solve the problems of introduction of feeding process, difficulty in realizing three-phase coupled gasification, failure of gasifier start-up, etc.
Active Publication Date: 2018-03-23
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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[0040] 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.
[0041] 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 indi...
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The invention relates to the technical field of coal gasification, and especially relates to a coal water slurry and powdered coal coupled gasification feeding method and a system thereof. The methodand the system can realize the safe and stable feeding of coal water slurry and powdered coal. The coal water slurry and powdered coal coupled gasification feeding method comprises the following steps: feeding a first raw material according to a first oxygen-coal ratio; and detecting the feeding flow amounts of the first raw material and an oxidizer in the feeding process of the first raw material, adjusting feeding flow amount(s) of the first raw material and / or the oxidizer according to the first oxygen-coal ratio to make the first raw material and the oxidizer fed at the feeding flows whichsatisfy the first oxygen-coal ratio, and feeding a second raw material in the process of feeding the first raw material and the oxidizer at the feeding flows which satisfy the first oxygen-coal ratio. The method and the system are used for coal water slurry and powdered coal coupled gasification for producing methane.
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): C10J3/00C10J3/50
CPCC10J3/00C10J3/50C10J2300/093C10J2300/0933C10J2300/0959C10J2300/0973C10J2300/0983
Inventor 付伟贤刘刚
Owner ENN SCI & TECH DEV