Circulating fluidized bed returning side blowing system and reforming method thereof
A circulating fluidized bed and side blowing technology, applied in the field of circulating fluidized bed, can solve the problems of threatening the safe operation of the boiler, poor feeding of the feeder, and large flue gas content, so as to reduce the flue gas circulation area and extend the The effect of service life and reduction of loose air volume
Pending Publication Date: 2018-11-16
黑龙江福恩德瑞能源科技有限公司
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Problems solved by technology
[0002] At present, the flue gas produced by the circulating fluidized bed combustion contains a large amount of ash and incompletely burned fine coal, which is carried by the flue gas, and then separated by the separator and returned to the boiler for secondary combustion. When the flue enters the separator, it directly washes the separator and the inlet of the flue, causing rapid wear, and the exhausted flue gas contains a large amount of dust; Although the feeder has the function of loosening wind and feeding wind, due to the large amount of circulating ash, the feeder is prone to poor feeding and pulsating feeding, which threatens the safe operation of the boiler
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[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.
[0030] Such as figure 1 A circulating fluidized bed return side blowing system is shown, which includes a flue 6, a separator 1 and a feeder 3 connected in sequence, and the feeder 3 includes a loose wind blower separated by a longitudinal partition 33. Chamber 31 and material return air chamber 32 , the lower part of the separator 1 communicates with the upper part of the loose air chamber 31 through the standpipe 2 , and the loose air chamber 31 is connected with the side blowing device 4 . The flue gas produced in the circulating fluidized bed enters the flue 6 from the upper part of the furnace 11, and the flue gas passes through the loose air chamber 31 of the separator 1 and the feeder 3 and then passes through the return air chamber 3...
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The invention relates to a circulating fluidized bed returning side blowing system and a reforming method thereof. The system comprises a flue, a separator and a returning device connected in series.The returning device comprises a loosening air chamber and a returning air chamber separated from the loosening air chamber through a longitudinal partition plate. The lower part of the separator is communicated with the upper part of the loosening air chamber through a riser. The loosening air chamber is connected to a side blowing device. The top of the flue at an inlet of the separator is provided with a top flue gas guiding belt for guiding downward flue gas when the flue gas flows out of the flue. One side, close to the center of a center cylinder, of the separator is provided with a sideflue gas guiding belt for making the flue gas close to the edge and upper part of the center cylinder when the flue gas enters the separator. The side blowing device is horizontally disposed on the inner chamber wall opposite to the partition plate and in the loosening air chamber. Through improvement of the flue at the flue inlet of the separator of the system, the separation efficiency is enhanced and the service life of the separator is prolonged.
Description
technical field [0001] The invention relates to the field of circulating fluidized beds, in particular to a circulating fluidized bed return material side blowing system and a transformation method. Background technique [0002] At present, the flue gas produced by the circulating fluidized bed combustion contains a large amount of ash and incompletely burned fine coal, which is carried by the flue gas, and then separated by the separator and returned to the boiler for secondary combustion. When the flue enters the separator, it directly washes the separator and the inlet of the flue, causing rapid wear, and the exhausted flue gas contains a large amount of dust; Although the feeder has the function of loosening wind and feeding wind, due to the large amount of circulating ash, the feeder is prone to poor feeding and pulsating feeding, which threatens the safe operation of the boiler. [0003] In view of the above situation, it is necessary to develop a circulating fluidize...
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Login to View More IPC IPC(8): F23C10/20
CPCF23C10/20
Inventor 王坤
Owner 黑龙江福恩德瑞能源科技有限公司