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Superheated steam pulverized coal combustion device

A superheated steam and pulverized coal combustion technology, applied in the direction of controlled combustion, combustion method, combustion equipment, etc., can solve the problems of high energy consumption, complex equipment, low energy utilization efficiency, etc., to improve heat exchange efficiency, simplify equipment, reduce The effect of the possibility of leakage

Inactive Publication Date: 2015-05-20
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a superheated steam pulverized coal combustion device, which solves the problems of the existing oxygen-enriched pulverized coal combustion device with complex equipment, high energy consumption and low energy utilization efficiency

Method used

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  • Superheated steam pulverized coal combustion device
  • Superheated steam pulverized coal combustion device

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Embodiment Construction

[0014] Such as figure 1 As shown, the embodiment of the present invention includes a pulverized coal boiler 1 , a steam generator 2 and a heater 3 .

[0015] The steam outlet of the steam generator 2 is connected to the steam inlet of the heater 3 through a pipeline, and the steam outlet of the heater 3 is respectively connected to the primary air pipeline 6 of the pulverized coal boiler 1 through the batching pipeline 4 and the gas distribution pipeline 5 and secondary air duct 7;

[0016] A first flowmeter 8 and a second flowmeter 9 are respectively installed in the batching pipeline 4 and the gas distribution pipeline 5 for controlling the superheated steam flow of the batching pipeline 4 and the gas distribution pipeline 5; The superheated steam flow ratio of the gas pipeline is 1:2 to 1:4.

[0017] A third flow meter 10 is installed at the front end of the secondary air duct 7 to measure the oxygen flow.

[0018] Such as figure 2 As shown, the heater 3 includes a box...

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Abstract

The invention discloses a superheated steam pulverized coal combustion device, belongs to boiler pulverized coal combustion devices in electric power industry, and solves the problems of complicated equipment, high energy consumption and low energy utilization efficiency of an existing oxygen-enriched pulverized coal combustion device. The superheated steam pulverized coal combustion device comprises a pulverized coal boiler, a steam generator and a heater, a steam outlet of the steam generator is connected with a steam inlet of the heater through a pipeline, a steam outlet of the heater is respectively connected with a primary air pipeline and a secondary air pipeline of the pulverized coal boiler through a distribution pipeline and an air distribution pipeline, and a first flow meter and a second flow meter are mounted in the distribution pipeline and the air distribution pipeline respectively and used for controlling the superheated steam flow ratio of the distribution pipeline and the air distribution pipeline. The internal heat exchange efficiency of a combustion chamber is effectively improved, the device is simplified, investment cost is saved, NOx emission load is reduced, pollutants can be integrally removed, and the superheated steam pulverized coal combustion device is not only applicable to solid fuels, but also applicable to gas and liquid fuels.

Description

technical field [0001] The invention belongs to a boiler pulverized coal combustion device in the electric power industry, and in particular relates to a superheated steam pulverized coal combustion device. Background technique [0002] At present, the boiler pulverized coal combustion device in the domestic power industry generally uses air (O 2 / N 2 ) pulverized coal combustion device, due to the high temperature generated by the combustion, the NOx emission is high, and a large amount of CO 2 into the atmosphere, causing the greenhouse effect; [0003] Some boilers use oxygen-enriched (O 2 / CO 2 ) pulverized coal combustion device, the air separator (mainly separates the O of the air 2 ), flue gas circulation fan, pulverized coal boiler, etc. and CO 2 However, due to the need for a large amount of flue gas circulation, the number of equipment increases, the flue gas leaks, the energy consumption increases, and the energy utilization efficiency decreases. Contents...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23L7/00F23N1/00
CPCY02E20/34
Inventor 操时英邹春宋昱张亮蔡磊李国元罗刚吕雷生
Owner HUAZHONG UNIV OF SCI & TECH
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