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Combined fluidized bed biomass boiler

A technology of biomass boiler and composite flow, 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 fire in the silo and reduce combustion efficiency, and achieve good ignition state and improved Thermal efficiency and low manufacturing cost

Inactive Publication Date: 2015-11-18
XIANGTAN BOILER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the boiler backfires, it will reduce the combustion efficiency and burn out the feeder, or the silo will catch fire and cause a major fire.

Method used

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  • Combined fluidized bed biomass boiler
  • Combined fluidized bed biomass boiler
  • Combined fluidized bed biomass boiler

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Experimental program
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Embodiment Construction

[0018] see Figure 1 to Figure 3 , the present invention comprises a feeder 1; an anti-tempering feeding device 2; a low water-cooled interlayer 3; a fluidized bed 4; a lower furnace and buried pipe 5; layer 8; internal circulation ember chamber 9; pressure body 10; connecting flue 11; economizer 12; air preheater 13. The economizer 12 and the air preheater 13 are arranged below the tail of the boiler. The anti-tempering feeding device 2 includes a feed pipe 21 and a jacket 23, an air supply interlayer 25 is formed between the jacket and the feed pipe, the jacket 23 is provided with a flanged air supply disk 22, and the air supply disk 22 is provided with Air supply hole 24.

[0019] The lower part of the furnace 15 is provided with a low-level water-cooled interlayer 3 .

[0020] A flame angle 14 is provided below the upper flue gas outlet of the furnace 15 .

[0021] The upper flue gas outlet of the furnace 15 is provided with an internal circulation ember chamber 9 .

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PUM

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Abstract

The invention discloses a combined fluidized bed biomass boiler which comprises a hearth, a secondary air pipe, a water cooling pipe, a fluidized bed and a tempering preventing feeding device. The tempering preventing feeding device comprises a feeding pipe and a jacket, and an air supply interlayer is formed between the jacket and the feeding pipe. The combined fluidized bed biomass boiler is low in tempering accident rate, and multiple kinds of fuel can be combusted at the same time. The load adjusting range is wide, the environmental protection performance is excellent, emissions of NOx and SO2 are effectively controlled, and the national emission standard is met. Heat conduction in the boiler is even, high heat accumulation performance is achieved, the heat recovery efficiency is high, and a recovery heat source is stable. The recyclability of ash residues is high.

Description

technical field [0001] The invention relates to a biomass boiler, especially a composite fluidized bed boiler capable of preventing flashback. Background technique [0002] At present, with the increasing demand for energy in society, fossil fuels, which are the main source of energy, are rapidly decreasing. Therefore, looking for renewable alternative energy sources has become the focus of widespread concern in society. Biomass energy is an ideal renewable energy source. It has a wide range of sources, and a large amount of industrial, agricultural and forest wastes are produced every year. In the world's current energy consumption, biomass energy consumption accounts for 14% of the world's total energy consumption, ranking fourth after oil, coal and natural gas. In developing countries, biomass accounts for a larger proportion, reaching more than 50%. The design of industrial boilers that use biomass exclusively is one of the important ways to utilize biomass energy. I...

Claims

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Application Information

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IPC IPC(8): F23C10/00F23C10/20F23C10/22
Inventor 王成治文爱兰姜红秀宋平罗康义王志平刘启陈帅男
Owner XIANGTAN BOILER
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