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Circulating fluidized bed gasification device and circulating fluidized bed gasification method

A technology of circulating fluidized bed and gasification device, which is applied in the details of gasification device, gasification process, granular/powdered fuel gasification, etc. Structural damage and other problems, to achieve the effect of improving the operation stability of the device, improving the carbon conversion rate of the system, and improving the uniformity of air distribution

Active Publication Date: 2021-01-15
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0006] (1) When the production capacity of a single gasifier is increased, thermal deformation is likely to occur during the hot start of the gasifier, operation fluctuations, and fire pressing process, resulting in damage to the structure of the air distribution plate, and the device cannot operate normally
[0007] (2) The temperature at the bottom of the gasifier does not reach the optimum conversion temperature of ash and slag. At the same time, the circulating semi-coke content in the bottom slag of the gasifier is large, resulting in a high carbon content in the bottom slag and a low carbon conversion rate in the system
[0008] (3) The air distribution structure is complex and the resistance is large

Method used

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  • Circulating fluidized bed gasification device and circulating fluidized bed gasification method

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Embodiment Construction

[0044] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements. In addition, in the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a comprehensive understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in diagrammatic form to simplify the drawings.

[0045] According to the inventive concept of the present invention, a circulating fluidized bed gasification device is provided. The circulating fluidized bed gasification device includes: a gasification furnace hearth, a cyclone separator and a feeder, and the lower part of the gasification furnace hearth is provided with Air distr...

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Abstract

The invention provides a circulating fluidized bed gasification device and a circulating fluidized bed gasification method. The circulating fluidized bed gasification device comprises: a gasification furnace hearth (1), a cyclone separator (2) and a feeder, and the lower part of the gasification furnace hearth (1) is provided with an air distribution device; the air distribution device includes A plurality of gasification agent nozzles (3), and at least two gasification agent nozzles (3) in the plurality of gasification agent nozzles (3) are arranged at different vertical heights. By adopting the circulating fluidized bed gasification device and the circulating fluidized bed gasification method of the present invention, the uniformity of air distribution is improved, and the carbon conversion rate of the system is high.

Description

technical field [0001] The invention relates to the technical field of fuel gasification, in particular to a circulating fluidized bed gasification device and a circulating fluidized bed gasification method. Background technique [0002] Circulating fluidized bed coal gasification technology is a clean coal conversion technology. Because of its material circulation loop with high circulation volume, the residence time of solid materials in the furnace is prolonged, and it has strong adaptability to coal types, sufficient gas-solid mixing, and gas Because of the advantages of high chemical reaction rate and uniform reaction temperature, it is widely used in the field of industrial gas and ammonia synthesis. [0003] The above-mentioned advantages of circulating fluidized beds depend largely on the design of the gas distributor. The gas distributor is installed in the lower part of the gasifier, which plays the role of uniform gas distribution and supporting solid particles. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/56C10J3/72
CPCC10J3/54C10J3/56C10J3/72C10J2200/152C10J2300/0959
Inventor 湛月平王小芳朱治平董鹏飞柴祯吕清刚
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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