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Reactor of fluidized bed

A fluidized bed reactor and reactor technology, applied in chemical instruments and methods, chemical/physical processes, etc., can solve problems such as inability to meet chemical process conditions, reasonable reactor design and processing difficulties, etc., to improve the quality of fluidization Effect

Inactive Publication Date: 2005-10-12
ZHEJIANG UNIV
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  • Abstract
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Problems solved by technology

If only the conical bed structure is simply used in the design, then if the scale of the fluidized bed reactor is further expanded, in order to ensure that the half-inclination angle of the conical bed is within a certain range, the height of the conical bed part will inevitably be large, so It brings difficulties to the rational design and processing of the entire reactor, and even cannot meet the chemical process conditions

Method used

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  • Reactor of fluidized bed
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Embodiment

[0037] Example: Figure 4 It is a comparison chart of the superficial gas velocity of the fluidized bed reactor of the present invention and the traditional semi-cone straight cylindrical bed reactor. Figure 4 The abscissa of is the fluidized bed reactor height H, Figure 4 The ordinate is the superficial gas velocity V. Compared with the commonly used semi-conical straight fluidized bed reactor (diameter 1.6 meters), the variable conical bed body of the present invention cooperates with the finger-shaped heat exchange tube bundle, and the formed cross-sectional area is smaller at the bottom of the reactor, and the empty tower gas The higher velocity V is conducive to the fluidization of large particles; the cross-sectional area at the top of the reactor is relatively larger, and the superficial gas velocity is significantly reduced, which is conducive to the fall of small particles or catalyst powder and reduces the load on separation and filtration devices. The reaction t...

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Abstract

A fluidized-bed reactor is disclosed. A gas distributor is arranged between the lower conic body and gas predistributing chamber. The vertically arranged finger sleeve tube bank is symmetrically distributed above said distributor, and communicated with the heat exchanging medium inlet and outlet. The returned material and solid material feeding inlets are installed to said lower conic body. It has also the raw gas inlet, synthetic gas outlet, and heat exchanging medium inlet and outlet. Its advantage is the improved fluidizing quality.

Description

technical field [0001] The invention relates to a gas-solid phase fluidized bed reactor suitable for fluidized particle system with wide particle size distribution, strong heat release and easy caking. Background technique [0002] The fluidized bed reactor involves many solid raw materials with wide particle size distribution or a system in which the particle size of the solid particles gradually decreases with the reaction, such as industrial pulverized coal combustion, ore burning in the metallurgical industry, and organosilicon monolayers in the chemical industry. body synthesis etc. [0003] For fluidized bed boilers, due to the wide particle size distribution of the fuel (powdered coal) and the operating wind speed have a greater impact on the working conditions of the bubbling fluidized bed and circulating fluidized bed, the gas-solid flow process in the furnace is more complicated, and the particles The range of phase concentration varies greatly from high to low (u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/24
Inventor 冯连芳邵月刚王嘉骏任不凡顾雪萍
Owner ZHEJIANG UNIV
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