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A pulverized coal combustion boiler system and a pulverized coal combustion boiler operating method

A pulverized coal combustion and boiler operation technology, which is applied in the field of boiler combustion, can solve problems such as high fuel consumption and unstable combustion, and achieve cost reduction and avoid non-stop effects

Active Publication Date: 2020-10-02
CHINA SHENHUA ENERGY CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to provide a pulverized coal combustion boiler system and a pulverized coal combustion boiler operation method to solve the problems of high fuel consumption and unstable combustion in the pulverized coal combustion boiler system in the prior art

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  • A pulverized coal combustion boiler system and a pulverized coal combustion boiler operating method
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  • A pulverized coal combustion boiler system and a pulverized coal combustion boiler operating method

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Embodiment Construction

[0028] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0029] In order to solve the problem of high fuel consumption and unstable combustion in the pulverized coal combustion boiler system in the prior art, the inventors of the present application have studied the commonly used fuels and potential fuels in the prior art, and found that the waste gas discharged from the coal gasification methanol synthesis device has It has the characteristics of many combustible components, relatively high calorific value, easy ignition and fast burning speed. The waste gas emitted by the coal gasification methanol synthesis unit is mainly hydrogen, methane, ethane, carbon monoxide and other combustible gases and N 2 , CO 2 , argon and other incombustible gases a...

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Abstract

The invention provides a pulverized coal combustion boiler system and a pulverized coal combustion boiler running method. The pulverized coal combustion boiler system comprises a pulverized coal combustion boiler which is provided with a combustion chamber, and one or more combustors which are arranged in an isolated manner, wherein each combustor comprises a plurality of primary air spraying openings and a plurality of secondary air spraying openings, the multiple primary air spraying openings do not communicate with the multiple secondary air spraying openings, the one or more secondary airspraying openings are arranged between the adjacent primary air spraying openings, each primary air spraying opening is provided with a pulverized coal inlet, at least two primary air spraying openings located at the lowest position are provided with plasma generators, and the primary air spraying openings provided with the plasma generators are the ignition primary air spraying openings; and theone or more secondary air spraying openings located below the ignition primary air spraying openings are provided with gas spraying guns. The pulverized coal combustion boiler system further comprisesa methanol synthetic waste gas supply device which is connected with the gas spraying guns of the secondary air spraying openings to synthesize methanol into waste gas serving as gas, and the secondary air spraying opening connected with the methanol synthetic waste gas supply device is a waste gas source secondary air spraying opening.

Description

technical field [0001] The invention relates to the technical field of boiler combustion, in particular to a pulverized coal combustion boiler system and a pulverized coal combustion boiler operating method. Background technique [0002] At present, large-scale coal-to-methanol projects with a million-ton level are usually equipped with several high-pressure boilers for gas supply, heat supply, and power generation. Conventional pulverized coal combustion boilers generally adopt oil gun ignition and low-load oil injection to stabilize combustion. When the boiler is started, the oil gun is used to ignite the fuel oil and then spray it directly into the furnace. At this time, the pulverized coal is sprayed into the furnace to ignite the pulverized coal, and then the oil gun is gradually withdrawn from operation, and the pulverized coal fired boiler is operated at low load for stable combustion. [0003] With the emergence and continuous maturity of plasma pulverized coal igni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C9/00
CPCF23C9/003
Inventor 李雪飞曹献波王炜何继兴李宗印滕洪生贾志兵刘云龙丁立成李俊林
Owner CHINA SHENHUA ENERGY CO LTD
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