Biomass combustion power generation boiler

A technology of burning power generation and biomass, applied in the field of boilers, can solve the problems of high concentration of smoke and dust, low combustion efficiency, unstable combustion of biomass fuel, etc., to achieve the effect of improving the flow rate of flue gas, high combustion efficiency, and ensuring the power of water cycle

Inactive Publication Date: 2015-02-18
HEFEI UNIV OF TECH
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Problems solved by technology

[0008] In order to overcome the shortcomings of the above-mentioned biomass combustion boilers, the present invention discloses a high-efficiency biomass combustion power generation boiler to solve the problems of unstable combustion of biomass fuel, low combustion efficiency, and high concentration of smoke and dust emissions.

Method used

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  • Biomass combustion power generation boiler
  • Biomass combustion power generation boiler

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Embodiment 1

[0025] Such as figure 1 and figure 2 As shown, a biomass combustion power generation boiler includes a furnace wall 1, a fire grate 2, a steam superheater 5, a feed port 3 and a slag discharge port 4, the space surrounded by the furnace wall 1 is the furnace, and the steam superheater 5 is hoisted on In the furnace, the fire grate 2 is a movable fire grate, and the furnace wall 1 is provided with a front arch 11 above the feed opening 3, which is characterized in that it also includes a front cover 91 and a flow deflector 92, and the front cover 91 is arranged above the front arch 11 On the front furnace wall 1, the front cover 91 extends horizontally from the front furnace wall 1 to the direction of the furnace, and the length of the front cover 91 is 1 / 4 of the length of the furnace. Above, the air guide cover 92 extends obliquely downward at 20 degrees from the rear furnace wall 1 to the furnace, and the length of the air guide cover 92 is 3 / 5 of the length of the furnace...

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Abstract

The invention discloses a biomass combustion power generation boiler, which comprises a boiler wall, a boiler grate, a steam overheater, a material inlet, a slag outlet, a front cover, a water cooling wall, a steam bag, a flow guide cover, an auxiliary flow guide cover and the like, wherein the boiler hearth is separated into a combustion chamber and a heat transfer chamber by the front cover and the flow guide cover, and biomass is centrally combusted in the combustion chamber under the area surrounded by the front cover and the flow guide cover. Compared with the prior art, the biomass combustion power generation boiler has the advantages that the biomass is centrally combusted in the area surrounded by the front cover and the flow guide cover, so the volume heat load of the combustion area is large; the turbulence of smoke in the combustion area is improved by the flow guide cover, the delivered biomass can be sufficiently and completely dried, the combustion is complete, and the combustion efficiency is high; the smoke flowing direction is turned by the flow guide cover, and the combustion dust is furthest settled in the combustion area by the centrifugal force of air flow, so the discharge amount of boiler pollutants is less.

Description

technical field [0001] The invention relates to the technical field of boilers, in particular to a biomass burning boiler for power generation. Background technique [0002] The following disadvantages exist in the combustion process of traditional biomass burning boilers: [0003] (1) Biomass fuel contains a lot of water, which requires higher drying temperature and longer drying time, but it is actually difficult to meet this condition and has already entered the combustion zone, resulting in incomplete combustion of biomass fuel; [0004] (2) The calorific value of biomass fuel is only 50% of that of coal on average, so the temperature level in the furnace is low, the combustion efficiency is low, and the problem of extinguishing is prone to occur when the furnace is shut down for a long time. [0005] (3) The volatile matter is high and the ignition temperature is low. At 250-350°C, a large amount of volatile matter will precipitate and start to burn violently. Combusti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B31/00F23B30/08F23M9/00
Inventor 邢献军李永玲张兵吴照斌裴钰陈水林
Owner HEFEI UNIV OF TECH
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