Gasification combustion hydrolyzing auxiliary combustion device and method of pulverized coal

A technology of pulverized coal and combustion chamber, which is applied in combustion methods, burners for burning powder fuel, burners, etc., to achieve the effects of reducing flue gas emissions, wide application range, and easy popularization and application.

Active Publication Date: 2010-11-10
王兴道
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For coal-fired grate furnaces, the combustion efficiency is between 50% and 65%, and the thermal efficiency is less than 75%, accounting for more than 90%.

Method used

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  • Gasification combustion hydrolyzing auxiliary combustion device and method of pulverized coal
  • Gasification combustion hydrolyzing auxiliary combustion device and method of pulverized coal

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Embodiment Construction

[0042] see figure 1 , a pulverized coal gasification combustion hydrolysis combustion-supporting device, comprising a pulverized coal thick-lean separator 1, a hydrolysis combustion-supporting device, and a gas fuel injector 3. The hydrolysis combustion aid has a housing 2 and a gasification combustion chamber 4, and a light phase pulverized coal chamber 2-1 and two combustion air chambers 2-2 are formed between the housing 2 and the gasification combustion chamber 4 , 2-3. Wherein, one combustion-supporting air chamber 2-2 is arranged at the inlet end of the gasification combustion chamber 4; the other is arranged on the right side of the light-phase pulverized coal chamber 2-1.

[0043] The gasification combustion chamber 4 has a plurality of light-phase pulverized coal channels 4-12 communicating with the light-phase pulverized coal chamber 2-1 and a plurality of channels 4-12 communicating with the combustion-supporting air chambers 2-2, 2-3. The air intake channel 4-11,...

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Abstract

The invention provides a gasification combustion hydrolyzing auxiliary combustion device and method of pulverized coal. The technical scheme of the invention is as follows: a concentrated-diluted separator is used to divide a pulverized coal stream into two pulverized coal streams-a concentrated phase pulverized coal stream and a diluted phase pulverized coal stream under the action of pneumatic conveying; the concentrated phase pulverized coal stream enters a gasification chamber through a concentrated phase pulverized coal stream channel to be ignited and gasified instantly under the actionof a gas fuel injector; the diluted phase pulverized coal stream containing fine pulverized coal enters in a vaporizing combustion chamber through the side channel of the gasification chamber and is combined with a flame type stream to mix with combustion air allocated by a fuel gas combustion section, burn vigorously and provide energy continuously for the energy consuming equipment in the flameform. The device and method of the invention adopts concentrated pulverized coal and diluted pulverized coal streams to enter the gasification section through different routes, air is supplied by a combustion air cavity at the inlet end of the vaporizing combustion chamber and a combustion air cavity on the right side of a diluted phase pulverized coal cavity; and different air quantities are adopted to fully mix pulverized coal and air, and the pulverized coal can burn fully. Experiments show that the combustion efficiency can be increased by about 5-10%.

Description

technical field [0001] The invention belongs to the technical field of pulverized coal gasification combustion, and in particular relates to a pulverized coal gasification combustion device and a hydrolysis combustion-supporting method. Background technique [0002] The gasification and combustion of coal is a major technical issue to complete the clean combustion of coal, save energy and reduce emissions. [0003] Traditional pulverized coal combustion mainly adopts blunt body steady flame and swirling fluid steady flame technology. The pulverized coal burner designed by these two technical methods can only be applied to room-fired, large-scale power boilers with hot air distribution combustion , the pulverized coal burner designed using the blunt body flame stabilization method and the swirl flame stabilization method can only be used as a single combustion component, and must be used in conjunction with a multi-component system, and requires accurate installation and comm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/00F23L7/00
Inventor 王兴道王延政
Owner 王兴道
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