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Straw grate-firing boiler adaptive to moisture movement

A straw layer and boiler technology, applied in the direction of solid fuel combustion, combustion method, combustion equipment, etc.

Inactive Publication Date: 2012-08-15
SHENYANG INST OF ENG
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  • Summary
  • 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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  • Straw grate-firing boiler adaptive to moisture movement

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Embodiment

[0029] 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 position of the applied base is 15.513MJ / Kg; the straw produced at the end of October in Panjin, Liaoning Province, 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.

[0030]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 the orig...

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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 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 present invention involves a layer of burning boiler, which specializes in a layer of burning boiler with straw as a fuel, which is the field of combustion equipment technology. Background technique [0002] While coal, petroleum, and natural gas, while providing energy power for the development of human society, it also causes huge harm to the living environment of human beings, such as greenhouse effects, NOX emissions, Sox emissions, and so SO 2 Eat emissions and dust pollution.At the same time, human society is also facing the problem of fossil energy depletion.Therefore, seeking the development of new energy, and the sustainable development of society has become increasingly valued by countries around the world.As a renewable clean energy, biomass has a good development prospect.The National Academy of Sciences clearly stated in the Energy Conversion of 1985-2010: "By 2010, the energy obtained by large-scale biomass transformation will be 20 times ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23B30/08F23L3/00
Inventor 王启民
Owner SHENYANG INST OF ENG
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