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Arrangement structure of subcritical circulating fluidized bed boiler

A technology of circulating fluidized bed and layout structure, used in steam boilers, steam generation, lighting and heating equipment, etc., can solve the problems of difficult layout of downcomers, large space in front of the furnace, etc. Large space and cost saving effect

Inactive Publication Date: 2011-02-09
SHANGHAI BOILER WORKS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The arrangement structure of a subcritical circulating fluidized bed boiler provided by the present invention changes the arrangement of the steam drum from the front of the furnace to the arrangement between the furnace and the cyclone separator, and the downcomer of the steam drum is arranged downward along the rear wall of the furnace, which solves the problem of Coal feeding and downcomer arrangement of subcritical circulating fluidized bed boiler is difficult. At the same time, the layout of the boiler makes the space in front of the furnace large, which is convenient for operation, maintenance and repair

Method used

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  • Arrangement structure of subcritical circulating fluidized bed boiler
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Embodiment Construction

[0015] based on the following figure 2 The preferred embodiment of the present invention is described in detail:

[0016] Such as figure 2 As shown, it is an arrangement structure of a subcritical circulating fluidized bed boiler. The boiler includes a furnace 1, and is arranged in the space behind the furnace, and is sequentially connected to the return system 3 of the furnace 1, the cyclone separator 2, and the tail convection flue 4. It also includes the feeder 8 and the fuel bin 7 in front of the furnace, which are arranged in the space in front of the furnace and connected to the furnace 1 in sequence.

[0017] Described boiler also comprises steam drum 5 and the downcomer 6 that connects steam drum 5 and furnace 1, and described steam drum 5 and downcomer 6 are arranged between furnace 1 and cyclone separator 2, and steam drum downcomer 6 is along The space between the furnace 1 and the cyclone separator 2 is arranged downwards to supply water to the furnace.

[001...

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Abstract

The invention provides an arrangement structure of a subcritical circulating fluidized bed boiler. A steam pocket is arranged between a hearth and a cyclone separator in stead of boiler front arrangement, and a steam pocket down-comer is downwards arranged along the rear wall of the hearth; therefore, the problems of difficult coal supply of the subcritical circulating fluidized bed boiler and difficult arrangement of the down-comer are solved, and meanwhile, the boiler increases large boiler front space on arrangement and is convenient for operation, maintenance and overhauling.

Description

[0001] technical field [0002] The invention relates to an arrangement structure of a subcritical circulating fluidized bed boiler. Background technique [0003] Subcritical circulating fluidized bed boilers have been widely used in my country, and almost all of the water cooling systems of subcritical circulating fluidized bed boilers adopt natural circulation. The boiler uses a drum furnace. According to the usual technology, the overall layout of the boiler, such as figure 1 As shown, the steam drum 5' is arranged in the space before the furnace 1', and then the furnace 1', the cyclone separator 2', the feeder 3' and the tail convection flue 4' are arranged in sequence. Most of the conveying preparation and conveying systems for boiler combustion are arranged in front of the boiler, using the way of feeding in front of the furnace. In the layout of the power plant, it is often found that the feeder 8' connected to the fuel bin 7' in front of the furnace collides with th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B31/00
Inventor 肖峰李炳顺
Owner SHANGHAI BOILER WORKS
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