Dry distillation circulating fluidized bed boiler

A technology of circulating fluidized bed and dry distillation furnace, applied in the field of boilers, which can solve the problems of severe smog, difficulty in storage and transportation, serious air pollution, etc., and achieve the effects of high comprehensive benefits, efficient utilization, and cost reduction

Inactive Publication Date: 2018-03-30
XIANGTAN BOILER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Strong chemical reactivity, easy to weather in the air, difficult to store and transport, serious air pollution when burned
However, because high-quality coal is almost mined out, lignite has become the main coal used in our country. However, because the degree of coalification of lignite is too low, there will be a lot of black ash floating in the air during combustion. If it is not processed by coal washing and refining, it will be used in large quantities Inferior lignite will lead to increasingly serious smog problems in my country

Method used

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  • Dry distillation circulating fluidized bed boiler
  • Dry distillation circulating fluidized bed boiler
  • Dry distillation circulating fluidized bed boiler

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Embodiment Construction

[0018] see Figure 1 to Figure 4 , comprising a furnace 1, a pot and a cyclone separator 6, a dry distillation cylinder 2 is set between the cyclone separator 6 and the furnace 1, the return ash of the cyclone separator 6 enters the dry distillation cylinder 2 and mixes with lignite and undergoes carbonization, and the dry distillation Lignite is burned to furnace 1.

[0019] The cyclone separator 6 is a horizontal or vertical adiabatic cyclone separator; a feeder 5 is provided before the lignite enters the furnace 1, and the dry distillation cylinder 2 adopts a horizontal cylinder structure.

[0020] The roller conveyor 3 sends the dry-distilled lignite to the feeder, and then burns in the furnace. When the boiler is ignited, the required fuel is input from the starting fuel inlet 4.

[0021] The dry distillation process is as follows: using a circulating flow flower bed boiler to circulate high temperature 850~900 °C return ash and lignite in the dry distillation furnace t...

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Abstract

The invention provides a dry distillation circulating fluidized bed boiler. It includes a hearth, pot and separator. A dry distillation cylinder is set between the separator and the hearth. The returned ash from the separator enters the dry distillation furnace and is mixed with lignite for dry distillation. The dry-distilled lignite is burned in the furnace. The combination of lignite carbonization and circulating fluidized bed boiler reduces the cost of lignite carbonization, and enables lignite to be burned on site to realize efficient utilization of lignite. Cost, high comprehensive benefit.

Description

technical field [0001] The invention relates to a boiler, in particular to a dry distillation circulating fluidized bed boiler. Background technique [0002] Lignite, also known as firewood coal, English: Lignite (coal); brown coal; wood coal, is the mineral coal with the lowest degree of coalification. A brown-black, dull, low-rank coal between peat and bituminous coal. Strong chemical reactivity, easy weathering in the air, difficult to store and transport, serious air pollution when burned. However, because high-quality coal is almost mined out, lignite has become the main coal used in my country. However, because the degree of coalification of lignite is too low, there will be a lot of black ash floating in the air during combustion. If it is not processed by coal washing and refining, it will be used in large quantities Inferior lignite will lead to increasingly serious smog problems in our country. [0003] Lignite upgrading refers to the process of improving the qua...

Claims

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Application Information

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IPC IPC(8): F23C10/10F23C10/22C10B53/04C10B57/00
CPCF23C10/10C10B53/04C10B57/00F23C10/22F23K2201/50
Inventor 唐跃宋平王志平刘定宇陈帅男刘庆何启理何军文爱兰姜红秀刘启
Owner XIANGTAN BOILER
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