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Supplemented-air-cooled central cylinder of cyclone separator

A cyclone separator and inner cylinder technology, which is applied to cyclone devices, fuels burning in a molten state, and devices whose axial directions of cyclones can be reversed, etc., to achieve the effects of reducing deformation, small changes, and good nitrogen oxide emissions.

Active Publication Date: 2015-12-09
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The object of the present invention is to propose a kind of supplementary air cooling cyclone separator center tube for the above problems, which can reduce the deformation of the cyclone separator center tube and prolong its service life. Improve combustion efficiency without changing

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  • Supplemented-air-cooled central cylinder of cyclone separator
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  • Supplemented-air-cooled central cylinder of cyclone separator

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Embodiment Construction

[0037] 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.

[0038] During the combustion process of fuel in the circulating fluidized bed, the nitrogen oxides (NOx) produced are mainly nitric oxide (NO), and its proportion is as high as 95%. Generally, the nitrogen source of NOx generated by coal combustion can be divided into fuel N and thermal N. The fuel nitrogen comes from the N in the f...

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Abstract

A central cylinder of a cyclone separator comprises an inner cylinder (72), an outer cylinder (71), an upper sealing plate (73), a lower sealing plate (74), at least one air inlet and at least one air outlet, wherein the inner cylinder and the outer cylinder form a jacket structure; the upper sealing plate (73) seals the space between the inner cylinder (72) and the outer cylinder (71) at the upper end of the jacket structure; the lower sealing plate (74) seals the space between the inner cylinder (72) and the outer cylinder (71) at the lower end of the jacket structure; the air inlets are formed in the outer cylinder (71); and the air outlets are formed in the inner cylinder (72). According to the central cylinder, the inner layer and the outer layer of the central cylinder form the jacket structure, and burning gas is supplemented to flow in the jacket structure, so that the central cylinder is effectively cooled down, the integral rigidity of the central cylinder is improved and deformation under the high-temperature condition is prevented.

Description

technical field [0001] The invention relates to the technical field of circulating fluidized beds, in particular to a central cylinder of a cyclone separator cooled by supplementary air. Background technique [0002] Circulating fluidized bed boilers have the advantages of high efficiency, environmental protection, and wide adaptability to coal types, and are used more and more widely. With the increasingly prominent problems of energy saving, environmental protection and safe and stable operation, high requirements are also put forward for the design of key components of circulating fluidized bed boilers. The central cylinder, the key component of the circulating fluidized bed cyclone separator, operates in the strong erosion of high-temperature flue gas above 900 ° C, and its service life has always been short. The central cylinder is generally made of heat-resistant steel Cr25Ni20, which will deform after a period of operation, and the manufacturing process is relatively...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/18B04C5/103
Inventor 周托吕清刚王小芳王东宇那永洁包绍麟高鸣
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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