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Medium-and-low temperature hot fume powder feeding type coal powder combustion device and combustion process thereof

A combustion device and pulverized coal technology, which are applied to burners, burners, and combustion methods for burning powder fuels, can solve the problems of large NOx emissions, poor flame stability, and poor adaptability to coal types, and can reduce NOx. The effect of generation, enhanced ignition and stable combustion, and emission reduction

Inactive Publication Date: 2014-12-03
SHANXI LANTIAN ENVIRONMENTAL PROTECTION EQUIPCO
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Problems solved by technology

[0004] The present invention aims to provide a medium and low temperature hot flue gas pulverized coal combustion device and its combustion process to solve the problem of long ignition time, high fuel consumption, poor flame stability, and coal burners of industrial boilers in the prior art. Poor adaptability, large NOx emissions, etc.

Method used

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  • Medium-and-low temperature hot fume powder feeding type coal powder combustion device and combustion process thereof

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Embodiment Construction

[0020] For a better understanding of the technical features, purpose and beneficial effects of the present invention, now refer to the attached figure 1 The technical solution of the present invention is described in detail as follows, but it should not be understood as limiting the scope of the present invention.

[0021] This embodiment provides a medium and low temperature hot flue gas feeding pulverized coal combustion device, as attached figure 1 As stated, the device includes: Roots fan 2, flue gas circulation pipe 3, pulverized coal mixer powder falling pipe 4, pulverized coal mixer air pipe 5, primary air central pipe 6, inner secondary air pipe 7, outer two Secondary air duct 8, swirl vane 9, blunt body 10, flaring 11, wherein:

[0022] The inlet end of the Roots blower 2 is connected to the flue gas pipeline between the pulverized coal industrial boiler and the air preheater;

[0023] The outlet end of the Roots blower 2 is connected to the inlet end of the flue ga...

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Abstract

The invention discloses a medium-and-low temperature hot fume powder feeding type coal powder combustion device and a combustion process thereof. The coal powder combustion device comprises a Roots blower, a fume circulating pipeline, a coal powder mixer composed of an air pipe and a powder feeding pipe and a combustor. The combustor comprises a primary air central pipe, inner secondary air pipes, outer secondary air pipes, a bluff body and a flaring. By the use of the medium-and-low temperature hot fume powder feeding type coal powder combustion device and the combustion process thereof, the problems such as long ignition time, high fuel consumption, poor flame stability and adaptability to different coal types and high NOX (nitrogen oxides) discharge of the coal powder combustor applied to an industrial boiler are solved.

Description

technical field [0001] The invention belongs to the field of combustion of pulverized coal industrial boilers, and in particular relates to a pulverized coal combustion device for feeding medium-low temperature hot flue gas and a combustion process thereof. Background technique [0002] In the current industrial boiler market, about 85% of the share is coal-fired industrial boilers, which are widely used in industrial production and building heating and other fields. In addition, coal-fired industrial boilers in my country generally have low efficiency, and the average operating efficiency is only 60%. %-65%, it can be seen that the environmental pollution caused by coal-fired industrial boilers with an annual coal consumption of nearly 700 million tons is extremely serious, and the SO produced by coal-fired industrial boilers every year 2 About 10 million tons, NO X About 2 million tons and about 1 million tons of dust, the emissions are second only to coal-fired power gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/00F23K3/02
Inventor 王欢王民发郎鹏德郎凤娥张宗旺王哲
Owner SHANXI LANTIAN ENVIRONMENTAL PROTECTION EQUIPCO
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