coal hydrogasification method

A coal hydrogenation gasification and hydrogen technology, applied in the field of coal gasification, can solve the problems of low conversion rate, short semi-coke reaction time, inability to fully react, etc., and achieve the effect of improving conversion rate, efficiency and economy

Active Publication Date: 2021-03-16
ENN SCI & TECH DEV
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Problems solved by technology

[0004] In view of this, the present invention proposes a coal hydrogasification method, which aims to solve the problem of low conversion rate due to the short reaction time of semi-coke in the existing coal hydrogasification reaction

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Embodiment Construction

[0022] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] see figure 1 , figure 1 The flow chart of the coal hydrogasification method provided by the embodiment of the present invention. As shown in the fig...

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Abstract

The invention provides a coal hydrogasification method, which comprises the following steps: a first reaction step: conveying pulverized coal, first hydrogen and oxygen to a first reaction zone of a gasification reaction device to perform a primary hydrogenation thermal decomposition reaction; a second reaction step: performing a semi-coke hydrogenation reaction on semi-coke generated by the primary hydrogenation thermal decomposition reaction and second hydrogen in the primary hydrogenation thermal decomposition reaction in a second reaction zone of the gasification reaction device, wherein the first reaction zone and the second reaction zone are sequentially arranged in the gasification reaction device from top to bottom and communicated with each other; an output step: discharging reaction products generated by the first reaction zone and the second reaction zone. According to the method, the semi-coke generated by the primary hydrogenation thermal decomposition reaction is subjected to the semi-coke hydrogenation reaction with the second hydrogen in the primary hydrogenation thermal decomposition reaction, so that the full reaction of the semi-coke can be ensured, the conversion rate of the semi-coke is improved, and the primary conversion rate of raw coal is further improved, thereby improving the overall efficiency of the coal hydrogenation gasification reaction, and improving the overall economy.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to a coal hydrogenation gasification method. Background technique [0002] Coal hydrogasification refers to the process in which coal undergoes a series of chemical reactions in an environment of excess hydrogen and high temperature and medium pressure to generate methane, carbon monoxide and other gases, high value-added oil products and semi-coke. The reaction process can be divided into a primary hydrothermal decomposition reaction and a secondary reaction. Specifically, the secondary reaction includes hydrocracking of gas phase products, polymerization, and hydrogenation of solid semi-coke. Among them, the gas-phase reaction in the primary hydrothermal decomposition reaction and the secondary reaction is relatively fast, while the reaction of solid semi-coke hydrogenation in the secondary reaction is a slow reaction, which requires a longer reaction time to obtain a hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/48
CPCC10J3/48C10J2300/093C10J2300/0959C10J2300/0966
Inventor 马志超汪国庆周三方科学刘明
Owner ENN SCI & TECH DEV
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