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Fluidized bed gasification furnace and gasification process

A fluidized bed gasifier and gasification agent technology, which is applied in the field of coal gasification, can solve the problems of insufficient utilization of raw coal with low ash melting point, etc., and achieve the advantages of harmless discharge, simple process and improved adaptability of coal types. Effect

Active Publication Date: 2021-03-12
ENN SCI & TECH DEV
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Problems solved by technology

[0005] In view of this, the present invention proposes a fluidized bed gasifier and a gasification process, aiming at solving the problem that raw coal with low ash melting point cannot be fully utilized in the existing coal gasification process

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  • Fluidized bed gasification furnace and gasification process
  • Fluidized bed gasification furnace and gasification process
  • Fluidized bed gasification furnace and gasification process

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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 to 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] refer to figure 1 with figure 2 , the fluidized bed gasification furnace of the embodiment of the present invention includes: a gasification reactio...

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Abstract

The invention provides a fluidized bed gasification furnace and a gasification process. The fluidized bed gasification furnace comprises a gasification reaction section and an oxygen-enriched combustion section which are sequentially communicated from top to bottom. A catalyst-loaded feed coal inlet and a gasifying agent inlet are respectively formed in the upper part and the lower part of the wall surface of the gasification reaction section; a plurality of oxygen nozzles are formed in the wall surface of the oxygen-enriched combustion section, are obliquely arranged upwards along the wall surface and are communicated with an oxygen inlet of the oxygen-enriched combustion section, and oxygen is conveyed to the oxygen-enriched combustion section in a rotational flow manner, so that ash slag generated by the gasification reaction section and oxygen are subjected to a combustion reaction; a large amount of heat is released and a high-temperature area is formed, so that the ash slag containing the catalyst is molten into a liquid state at a high temperature, and the liquid ash slag descends along the inner wall to be discharged out of the gasification furnace. Coal with low ash melting point can be effectively catalyzed and gasified, the coal adaptability is greatly improved, and harmless discharge of ash slag is realized at the same time.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to a fluidized bed gasification furnace and a gasification process. Background technique [0002] Fluidized bed coal catalytic gasification belongs to the third-generation coal gasification technology. By adding catalysts to coal, the reaction activity of coal gasification can be effectively improved, and the three reactions of catalytic coal gasification, methanation and transformation can be carried out simultaneously to achieve endothermic reactions. The thermal coupling greatly improves the system energy efficiency. Therefore, the operating temperature of the gasifier can be effectively reduced, and the methane content at the outlet of the gasifier can be increased. [0003] Salts of alkali metal potassium, sodium and alkaline earth metal calcium are good coal gasification catalysts. Alkaline industrial wastes such as chemical concentrated brine, papermaking black li...

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Application Information

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IPC IPC(8): C10J3/56C10J3/72
CPCC10J3/56C10J3/72C10J2300/093
Inventor 王会芳李克忠李鹏孙志强
Owner ENN SCI & TECH DEV
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