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Chain-grate boiler and burning method

A technology of chain boiler and combustion method, applied in the field of boiler combustion, can solve the problems of not considering optimal combustion and environmental protection measures, etc.

Active Publication Date: 2016-06-01
YANTAI LONGYUAN POWER TECH
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Problems solved by technology

As the largest emitter of nitrogen oxides, coal-fired boilers have become one of the main causes of haze weather. Therefore, how to reduce the emission of nitrogen oxides from industrial boilers is becoming increasingly urgent. The existing chain boilers and conventional pulverized coal boilers Basically similar, without considering any optimization of combustion and environmental protection measures

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  • Chain-grate boiler and burning method
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  • Chain-grate boiler and burning method

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Embodiment Construction

[0042] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0043] The specific embodiments of the present invention are for the convenience of further description of the concept of the present invention, the technical problems to be solved, the technical features constituting the technical solution and the technical effects brought about. It should be noted that the description of these embodiments does not constitute a limitation of the present invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0044] Since the existing chain boilers do not consider optimized combustion and environmental protection measures, and their nitrogen oxide emissions are large, the present invention designs a chain boiler, which includes: boiler body, ind...

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Abstract

The invention relates to a chain-grate boiler and a burning method. The chain-grate boiler comprises a boiler body, an induced draft fan, a circulation fan, a primary fan and an air supply bin; primary air pumped from natural air is fed into the air supply bin through the primary fan, and therefore drying, burning and burnout of coal are promoted; and circulation smoke pumped from total smoke passing through the induced draft fan is fed into a burning air supply bin in the air supply bin through the circulation fan, and generation of NOx is restrained. Furthermore, part of the circulation smoke pumped from the total smoke passing through the induced draft fan is fed into a backwards-arched air distribution opening through the circulation fan, mixing of smoke in a hearth is strengthened, burning of fuel is promoted, and the burning efficiency of the chain-grate boiler is improved. By means of the burning method of the chain-grate boiler, generation of the NOx is correspondingly restrained, and the burning efficiency of the chain-grate boiler is improved.

Description

technical field [0001] The invention relates to the field of boiler combustion, in particular to a chain boiler and a combustion method. Background technique [0002] The application of industrial boilers in my country is characterized by a large quantity and a wide range. At present, there are about 550,000 industrial boilers in operation. Although with the development of the national economy and the improvement of people's living standards, the number of large thermal power units has increased rapidly. Coal-based, so most industrial boilers are coal-fired boilers, and mainly chain-burning furnaces. [0003] Chain boiler is a layer-fired furnace with a high degree of mechanization. It is named for its grate similar to a chain crawler. It is a furnace type widely used in industrial boilers. It has a medium capacity of 10-65t / h, or It is used in small capacity boilers of 1-2t / h. The chain furnace is a front-mounted furnace. The coal combustion process is completed while movi...

Claims

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Application Information

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IPC IPC(8): F23B80/02F23L1/00F23L9/00F23N3/00
Inventor 董永胜初燕刘欣孙树翁刘平王家兴
Owner YANTAI LONGYUAN POWER TECH
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