Stokehole pulverized coal recovery type recirculating fluidized bed boiler

A technology of circulating fluidized bed and pulverized coal in front of the furnace, which is applied to fluidized bed combustion equipment, fuel burning in a molten state, lighting and heating equipment, etc., can solve the problems of low recovery rate, high energy consumption, large volume, etc.

Inactive Publication Date: 2010-12-01
广东兆丰能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the prior art has technical defects such as complex structure, bulky volume, high energy consumption, and low recovery rate.

Method used

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  • Stokehole pulverized coal recovery type recirculating fluidized bed boiler
  • Stokehole pulverized coal recovery type recirculating fluidized bed boiler

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Embodiment Construction

[0018] like figure 1 As shown, the present invention includes a furnace 1, an air inlet chamber 5, and a pulverized coal recovery system. A hopper 2 is provided on one side of the furnace 1, a smoke exhaust passage 11 is provided on the upper part of the furnace 1, and a discharge channel 11 is provided on the bottom of the furnace 1. A slag channel 12, the slag discharge channel 12 can also be arranged on the side wall of the lower part of the furnace 1, the bottom of the furnace 1 is also provided with an air distribution plate 3, and the air distribution plate 3 can also be arranged at the lower part of the furnace 1 On the side wall of the air distribution plate 3, several wind caps 4 are arranged, and the air inlet chamber 5 communicates with the air distribution plate 3 and the wind caps 4. The wind cap 4 includes several small wind caps 41 and at least A large wind cap 42, in this embodiment, a large wind cap 42 is provided on the side of the air distribution plate 3 cl...

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Abstract

The invention discloses a stokehole pulverized coal recovery type recirculating fluidized bed boiler, aiming at providing a stokehole pulverized coal recovery type recirculating fluidized bed boiler which has lower energy consumption and higher recovery efficiency. The stokehole pulverized coal recovery type recirculating fluidized bed boiler comprises a furnace hearth (1), an air inlet chamber (5) and a pulverized coal recovery system, wherein a hopper (2) is arranged at one side of the furnace hearth (1), a smoke discharging channel (11) is arranged at the upper part of the furnace hearth (1), a slag discharging channel (12) is arranged on the lateral wall at the bottom or the lower part of the furnace hearth (1), an air distribution plate (3) is also arranged on the lateral wall at the bottom or the lower part of the furnace hearth (1), a plurality of air hoods (4) are arranged on the air distribution plate (3), and the air inlet chamber (5) is in air communication with the air distribution plate (3) and the air hoods (4); and the pulverized coal recovery system comprises a pulverized coal recoverer (6) and a recovery channel (8), wherein the pulverized coal recoverer (6) is arranged at the upper part of the furnace hearth (1) at the same side of the hopper (2), the pulverized coal recoverer (6) is communicated with the air hoods (4) through the recovery channel (8), and a suction device (7) is arranged on the recovery channel (8). The invention can be widely applied to the field of boilers.

Description

technical field [0001] The invention relates to a pulverized coal recovery circulating fluidized bed boiler in front of the furnace. Background technique [0002] Fluidized bed boilers are divided into two types: bubbling bed boilers and circulating fluidized bed boilers. Circulating fluidized bed boilers are developed on the basis of bubbling bed boilers. The principles are basically the same, but there are certain differences. The main differences for: [0003] Bubbling bed boiler (also known as fluidized bed boiler), when it is in use, the fly ash containing a large amount of carbon-containing fine particles brought out from the furnace by the flue gas is not recovered, and the carbon-containing fly ash is allowed to pass through the dust collector and then discharged through the chimney. Into the atmosphere, the particles recovered by the dust collector are treated as waste. Using this kind of boiler will undoubtedly cause waste of resources, and the utilization rate o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/12F23C10/18F23C10/20
Inventor 杨奇飞
Owner 广东兆丰能源技术有限公司
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