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Straw grate-firing boiler adaptive to moisture movement

A straw layer and boiler technology is applied in the combustion, combustion method, combustion equipment and other directions of solid fuel to achieve the effect of avoiding pollution

Inactive Publication Date: 2011-05-11
SHENYANG INST OF ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] In order to overcome the shortcomings and deficiencies of the existing straw-fired boilers, the purpose of the present invention is to provide a straw-fired boiler that adapts to moisture changes, making it different from the existing Compared with the technology, when the straw with high moisture content is used for combustion, the combustion is stable, and when the straw with low moisture content is used for combustion, it does not coke

Method used

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Embodiment

[0026] There are two kinds of straw raw materials for the straw-fired boiler adapted to water changes provided by the present invention, which are straws produced at the end of November in the Panjin area of ​​Liaoning Province. The analysis results of the basic elements of the straws are: Car=42.08, Har=7.53, Oar=38.42 , Nar=1.97, Sar=0.21, Mar=6.21, Aar=3.58, the calorific value at the low level of the applied base is 15.513MJ / Kg; the straw produced in Panjin area of ​​Liaoning Province at the end of October, the analysis result of the applied base element of the straw: Car=29.67, Har=3.91, Oar=22.87, Nar=1.52, Sar=0.09, Mar=39.15, Aar=2.79, the calorific value of the low position of the applied base is 9.633MJ / Kg.

[0027]Transformation of a coal-fired 7MW hot water chain boiler. The vibrating grate is arranged at the front of the original grate position, the inclination angle of the vibrating grate is 15°, and the length of the vibrating grate is 1.5m; the other part of th...

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Abstract

The invention discloses a straw grate-firing boiler adaptive to moisture movement. The boiler provided by the invention comprises an air blower, a draught fan, a furnace chamber, a tail heating surface, an oscillating grate arranged obliquely and a chain grate arranged horizontally, wherein the lower part of the oscillating grate is provided with an oscillating grate air chamber; the lower part of the chain grate is provided with a chain grate air chamber; the oscillating grate air chamber and the chain grate air chamber are communicated with the air blower, and are independently sealed; a blast pipe is provided with a chain grate air chamber flow control valve and an oscillating grate air chamber flow control valve; a gas collecting tube is arranged in the oscillating grate air chamber; and the gas collecting tube and a boiler smoke charging pipeline are communicated, and the connecting pipeline of boiler smoke charging pipeline is provided with a gas-flow control valve, a stop valve and a control temperature measuring device. The straw grate-firing boiler adaptive to moisture movement has the advantages that when the straw with large as-fired basis full moisture is combusted, the combustion is stable, and when the straw with small as-fired basis full moisture is combusted, coking is avoided. When the fuel as-fired basis full moisture changes within the range of 8%-60%, the content of the combustible carbon in ash is ensured to be below 5%, the straw can be comprehensively utilized, and solid emission pollution can be avoided.

Description

technical field [0001] The invention relates to a layer-fired boiler, in particular to a layer-fired boiler using straw as fuel, and belongs to the technical field of combustion equipment. Background technique [0002] Fossil energy such as coal, oil and natural gas not only provides energy and power for the development of human society, but also causes great harm to the living environment of human beings, such as greenhouse effect, NOx emissions, SO 2 emissions and dust pollution. At the same time, human society is also facing the problem of fossil energy depletion. Therefore, seeking to develop new energy sources and realizing the sustainable development of society has been paid more and more attention by countries all over the world. Biomass energy, as a renewable clean energy, has a good development prospect. The National Academy of Sciences of the United States clearly stated in "Energy Transformation 1985-2010": "By 2010, the energy obtained from large-scale biomass...

Claims

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Application Information

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IPC IPC(8): F23B30/08F23L3/00
Inventor 王启民
Owner SHENYANG INST OF ENG
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