Circulating fluidized bed accompanying bed material level detection and automatic control device and method
A circulating fluidized bed and automatic control technology, which is applied in the field of coal chemical industry, can solve the problems that the continuous transportation of high-temperature and high-pressure powder materials cannot be realized.
Active Publication Date: 2021-03-19
SHAANXI YANCHANG PETROLEUM GRP
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Problems solved by technology
At present, the transmission of high-pressure powder materials at home and abroad generally adopts the intermittent conveying technology of alternating pressure tanks. The powder is transformed from high pressure to low pressure through alternating pressure tanks, and then completed by pneumatic conveying. This method cannot achieve high temperature and high pressure powder. Continuous conveying of materials
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[0043] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0044] Such as figure 1 , figure 2 As shown: the device of the present invention includes four parts: a circulating fluidized bed reactor 1, an automatic detection and control system 15 for the companion bed material level, an online powder replenishment system 30, and a continuous decompression and cooling conveying system 57 for high-pressure and high-temperature powder materials;
[0045] The circulating fluidized bed reactor 1 includes a riser reactor 2, a primary carbon-containing solid trap 3, a secondary carbon-containing solid trap 5, a sealed return feeder 4, a reactor companion bed 6, Seal the return conveyor 7.
[0046] The material level automatic detection and control system 15 includes a partial pressure difference detector 13 for the companion bed, an overall pressure difference detector 12 for the companion bed, and a material level account...
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Abstract
The invention discloses a circulating fluidized bed accompanying bed material level detection and automatic control device and method. The device comprises a circulating fluidized bed reactor, an accompanying bed material level automatic detection and control system, an online powder supplementing system and a high-pressure high-temperature powder material continuous pressure reduction cooling conveying system, wherein the circulating fluidized bed reactor is connected with the accompanying bed material level automatic detection and control system, the online powder supplementing system and the high-pressure high-temperature powder material continuous decompression cooling conveying system respectively. According to the invention, the problems of solid particle material level measurement,especially solid particle material level measurement under high-temperature and high-pressure working conditions, online powder material addition and cooling, pressure reduction, conveying and discharging of solid materials with different particle sizes in the fluidized bed reactor of the circulating fluidized bed can be solved; and the fluidized bed reactor accompanying bed material level is automatically controlled to ensure the stable operation of the fluidized bed reactor.
Description
technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a device and method for detecting and automatically controlling the material level of a circulating fluidized bed companion bed. Background technique [0002] Super-large fluidized bed gasification technology can expand the adaptability of fluidized bed coal types from low-rank coal to medium-high rank coal with abundant reserves in China, and has broad market prospects. Fluidized bed gasification technology has the characteristics of fast solid circulation rate and gas velocity, the use of solid particle heat carrier to increase heat transfer and heat storage, and high solid density of companion bed, so that the super large fluidized bed reactor has solid heat carrier in the reactor The wear and tear, and the difficulty in measuring the material level of the solid material in the companion bed of the reactor under high temperature and high pressure conditions and ...
Claims
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IPC IPC(8): C10J3/56C10J3/72
CPCC10J3/56C10J3/723C10J2300/093
Inventor 毛吉会魏江涛李斌权亚文牛鑫张栋兰伟伟赵金萍张启科杜若宇党昱
Owner SHAANXI YANCHANG PETROLEUM GRP