Circulating fluidized bed gasification device and gasification method with grading air distribution effect

A circulating fluidized bed and graded air distribution technology, which is applied in the field of coal gasification, can solve the problems of affecting gasification efficiency, high carbon content in bottom slag and fly ash, and improve gasification efficiency, safety and stability , the effect of increasing productivity

Pending Publication Date: 2017-11-03
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The structural performance of the circulating fluidized bed coal gasifier is restricted by the law of fluidization. Its advantages benefit from this, and at the same time, it also brings adverse effects. For example, the conventional circulating fluidized bed coal gasifier has the following Problem: 1. The materials in the furnace are evenly mixed and the temperature is uniform, but the production of gas requires that the furnace must maintain a reducing atmosphere, that is to say, the materials in the furnace must maintain a high carbon content, which makes circulat

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  • Circulating fluidized bed gasification device and gasification method with grading air distribution effect
  • Circulating fluidized bed gasification device and gasification method with grading air distribution effect
  • Circulating fluidized bed gasification device and gasification method with grading air distribution effect

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[0031] 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.

[0032] figure 1 It is a schematic diagram of a circulating fluidized bed gasification device with graded air distribution according to an embodiment of the present invention, as figure 1 As shown, the circulating fluidized bed gasification device with graded air distribution includes a furnace 1, a gas-solid separation device 2, an...

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Abstract

A circulating fluidized bed gasification device with a grading air distribution effect comprises a hearth (1), a gas-solid separation device (2) and a returning system, wherein the hearth (1) is provided with auxiliary gasification agent inlets (m1 to m4). The invention also provides a circulating fluidized bed gasification method with the grading air distribution effect. By means of the circulating fluidized bed gasification device and gasification method with the grading air distribution effect, the gasification efficiency is improved, and the carbon content in fly ash is reduced.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to a circulating fluidized bed gasification device with graded air distribution and a circulating fluidized bed gasification method with graded air distribution. Background technique [0002] As an efficient and clean clean coal technology, coal gasification technology is a main way to convert solid primary energy such as coal into gaseous clean secondary energy. This technology is mainly used for synthetic ammonia, synthetic methanol, hydrogen production, and blast furnace reduction ironmaking. Such as chemical metallurgical industry, combined cycle power generation field, industrial and civil gas field and many other fields. [0003] Classified according to the movement state of solid fuel, modern coal gasification processes mainly include moving bed (also known as fixed bed) gasification, entrained bed gasification and fluidized bed gasification. Fluidized bed coal gas...

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Application Information

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IPC IPC(8): C10J3/56
CPCC10J3/56C10J2300/1807C10J2300/1861C10J2200/15C10J2300/093Y02E20/18
Inventor 朱治平王小芳于旷世王坤吕清刚高鸣
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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