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Fluidized bed gasification furnace and gasification process

A fluidized bed gasifier and process technology, applied in the field of coal gasification, can solve the problems of insufficient utilization of raw coal with low ash melting point, environmental pollution caused by the discharge of alkali metal and alkaline earth metal catalysts, etc., so as to improve the adaptability of coal and improve the Economical, simple process 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 to solve the problems that the discharge of alkali metal and alkaline earth metal catalysts in the existing coal gasification process pollutes the environment and the raw material coal with low ash melting point cannot be fully utilized

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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

[0024] 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.

[0025] refer to figure 1 and figure 2 , the fluidized bed gasification furnace of the embodiment of the present invention includes: a gasification reaction...

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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 plurality of gasifying agent nozzles are respectively formed in the upper part and the lowerpart of the gasification reaction section, and each gasifying agent nozzle is obliquely arranged upwards; a plurality of oxygen nozzles are formed in the wall surface of the oxygen-enriched combustionsection, are obliquely arranged downwards along the wall surface, extend into the oxygen-enriched combustion section and are used for conveying oxygen to the oxygen-enriched combustion section, so that ash 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; and further, the ashcontaining the catalyst is molten into a liquid state at high temperature. Oxygen and gasified ash are subjected to a combustion reaction sufficiently to generate a large amount of heat, the ash is ensured to be discharged in a liquid state while heat is provided for the gasification reaction section, the coal type adaptability is improved, and harmless discharge of the ash is achieved.

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 王会芳李鹏刘雷李克忠
Owner ENN SCI & TECH DEV
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