Smoke gas reverse flowing prevention device of biomass circulating fluid bed boiler

A circulating fluidized bed and biomass technology, which is applied in the direction of fluidized bed combustion equipment, fuel burning in a molten state, lighting and heating equipment, etc., can solve the problems of endangering the personal safety of operating personnel, and achieve the prevention of flue gas backchanneling, Prevent back channeling and facilitate smooth feeding

Inactive Publication Date: 2011-03-30
SOUTHEAST UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there are operating personnel inspecting the hopper in front of the furnace, the

Method used

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  • Smoke gas reverse flowing prevention device of biomass circulating fluid bed boiler
  • Smoke gas reverse flowing prevention device of biomass circulating fluid bed boiler
  • Smoke gas reverse flowing prevention device of biomass circulating fluid bed boiler

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Embodiment Construction

[0039] Refer to the following Figure 1-9 The best embodiment of the anti-channeling device for biomass circulating fluidized bed boiler of the present invention will be described in detail, but the scope of protection of the present invention is not limited to the embodiment.

[0040] As shown in the figure, a flue gas anti-channeling device for a biomass circulating fluidized bed boiler includes a feeding trough 7 arranged on a furnace 9, and the device is also provided with a furnace return flue 8 and a self-balancing smoke retaining door Mechanism 3, linkage damper mechanism 5 and two-stage air distribution mechanism 6.

[0041] One end of the returning furnace flue 8 is connected to the top of the hopper 7 , and the other end is connected to the upper negative pressure area of ​​the furnace 9 .

[0042] The self-balancing smoke door mechanism 3 is fixedly connected sequentially by a baffle 10, a sleeve 11, a connecting rod 12 and a round steel 13, and the two ends of the...

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Abstract

The invention discloses a smoke gas reverse flowing prevention device of a biomass circulating fluid bed boiler, which comprises a baiting groove arranged on a hearth, wherein a return flue, a self-balancing smoke baffle door mechanism, a linkage air door mechanism and a two-stage air distribution mechanism are also arranged in the device, one end of the return flue is connected with the top of the baiting groove, the other end of the return flue is connected with a negative pressure region of the upper part of the hearth, the self-balancing smoke baffle door mechanism is formed by sequentially and fixedly connecting a baffle plate, a sleeve, a connecting rod and round steel, the linkage air door mechanism is arranged in the return flue and is connected with the round steel in the self-balancing smoke baffle door mechanism through a linkage rod, and the two-stage air distribution mechanism is arranged at the bottom part of the baiting groove. The smoke gas reverse flowing prevention device adopts the combined utilization mode of the two-stage air distribution mechanism and the self-balancing smoke baffle door mechanism, the two-stage air distribution mechanism stops the reverse flowing of a small amount of smoke gas, and the self-balancing smoke baffle door mechanism guides a large amount of smoke gas to the negative pressure region of the upper part of the hearth, so the reverse flowing of the smoke gas can be effectively prevented on the basis of realizing the flexible regulation of the whole device.

Description

technical field [0001] The invention relates to a flue gas anti-channeling device for a biomass circulating fluidized bed boiler. Background technique [0002] In recent years, China's energy and power supply and demand have tightened, and domestic and foreign power generation industries have paid great attention to the development and utilization of biomass resources that are rich in resources, highly renewable, and conducive to improving the environment and sustainable development. So the biomass power generation industry came into being. Biomass power generation mainly uses agricultural, forestry, industrial waste, municipal solid waste and sewage plant sludge as raw materials, and adopts direct combustion or gasification power generation methods. As far as my country's basic national conditions and biomass utilization and development level are concerned, biomass direct combustion technology is undoubtedly one of the most convenient and feasible ways to efficiently utili...

Claims

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Application Information

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IPC IPC(8): F23C10/18
Inventor 张勇金保昇钟文琪
Owner SOUTHEAST UNIV
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