Large fluidized bed reactor for wide sieving fluidized particles

A fluidized bed reactor, a large-scale technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve problems such as limiting the large-scale engineering amplification of the reactor process, and achieve the effect of improving the fluidization quality and realizing the amplification requirements.

Inactive Publication Date: 2003-06-25
TSINGHUA UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

Although this kind of fluidized bed can improve the fluidization quality to a certain extent, if the scale of the fluidized bed reactor is further expanded, the structural parameters such as the semi-cone angle of the conical bed and the height-to-diameter ratio of the fluidized bed cannot meet the requirements of chemical reactions. The requirements of the process, the existing fluidized bed structure limits the large-scale engineering scale-up of this type of reactor process

Method used

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  • Large fluidized bed reactor for wide sieving fluidized particles
  • Large fluidized bed reactor for wide sieving fluidized particles
  • Large fluidized bed reactor for wide sieving fluidized particles

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Embodiment Construction

[0013] Describe concrete structure and mode of operation of the present invention in detail below in conjunction with accompanying drawing:

[0014] Large fluidized bed reactor of the present invention figure 2 It consists of a main bed 4, a conical bed 7, an annular gas distributor 10 and a finger tube heat exchange internal member 5. The diameter D of the main bed can be between 2.0 and 6.0m, and the height H 1 It can be between 8 and 15m; the height H of the conical bed 2 It can be between 1.8-4.5m, and the half-cone angle α can be between 7-13°; the inner cone structure 8 is introduced into the conical bed, and the half-cone angle β can be between 5-13°. All of the above can be selected according to specific circumstances. The cross-sectional area is double adjusted through the conical bed and the inner cone structure, and the gas velocity is effectively adjusted at the appropriate conical bed height, which avoids the problem that the simple use of the conical bed cann...

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Abstract

The present invention relates to chemical equipment technology. The large fluidized bed reactor consists of main bed, conic bed, internal finger-shaped tube heat-exchange member and gad distributor, and features the inner cone structure in the conic bed and sectional introduction of heat-exchange medium to the heat exchange pipe. Using the fluidized bed reactor of the present invention can regulate effectively the fluidizing cross-section area, improve fluidizing quality and realize industrial application easily.

Description

technical field [0001] The invention relates to a large-scale fluidized bed reactor suitable for wide screening of fluidized particles, especially suitable for a gas-solid reaction system in which solid particles are used as reaction raw materials, and belongs to the technical field of chemical equipment. Background technique [0002] In the chemical process, in order to achieve the purpose of effective heat and mass transfer, many productions are usually carried out in fluidized bed reactors. It also involves many solid raw materials with wide particle size distribution or solid particles as reaction raw materials, such as pulverized coal gasification, ore burning in metallurgical industry, etc. For this type of system, due to the wide distribution of solid particle size or the gradual change of particle size during the reaction process, the reactor is required to have high operating flexibility, which can ensure that the particle size of solid particles changes within a ce...

Claims

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Application Information

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IPC IPC(8): B01J8/24
Inventor 王金福罗务习王铁峰王光润金涌
Owner TSINGHUA UNIV
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