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A prepyrolysis type civil heating furnace and heating method thereof

A heating furnace, pre-pyrolysis technology, applied in the direction of combustion methods, water heaters, fluid heaters, etc., can solve the problems of poor environmental performance, low coal combustion efficiency, incomplete coal combustion, etc.

Active Publication Date: 2021-04-23
YANKUANG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problems of incomplete coal combustion, poor environmental protection performance and low coal burning efficiency existing in existing small and medium-sized civil heating furnaces, the present invention provides a pre-pyrolysis type civil heating furnace and a heating method thereof

Method used

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  • A prepyrolysis type civil heating furnace and heating method thereof
  • A prepyrolysis type civil heating furnace and heating method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0060] This embodiment provides a kind of pre-pyrolysis type civil heating stove and its treatment method, such as figure 1 As shown, the heating furnace includes a furnace body 1, and a longitudinal partition is arranged on the roof wall of the furnace body 1, which divides the interior of the furnace body 1 into a first chamber and a second chamber, and the first chamber and the second chamber The bottom of the chamber is connected, wherein the first chamber is a convection heat exchange zone 6, and the convection heat exchange zone 6 has built-in heat exchange tubes, and the middle part of the second chamber is equipped with a fire grate to divide the chamber into upper and lower regions. The top of the grate is an anaerobic pyrolysis zone, and the bottom of the grate is a semi-coke combustion zone. A charging port 10 is provided on the furnace wall exiting the anaerobic pyrolysis zone. The primary tuyere 7 is set between them, and the heat pipe 5 connecting the anaerobic p...

Embodiment 2

[0068] This embodiment provides a kind of pre-pyrolysis type civil heating stove and its treatment method, such as figure 2 As shown, the structure of the heating furnace refers to the structure in Example 1, the difference is that a pyrolysis gas conduit 9 is provided on the inner wall of the second chamber, and the pyrolysis gas conduit 9 is retained from the semi-coke combustion zone. The space extends into the anaerobic pyrolysis zone.

[0069] The method of using the heating furnace for heating refers to the method in Example 1, the only difference is that the oxygen volume content in the anaerobic pyrolysis process in step (a) is less than 2.5%, and the pyrolysis temperature is about 530-580 ° C. (2) The combustion temperature is 900°C to 950°C.

[0070] The coal-fired efficiency of the heating furnace described in this embodiment is> 88%, and the NO in the flue gas after combustion in the burnout zone x Emission concentration is less than 170mg / nm 3 , CO emission co...

Embodiment 3

[0072] This embodiment provides a pre-pyrolysis type civil heating furnace and its treatment method. The structure of the heating furnace refers to the structure in Embodiment 2.

[0073]The method of using the heating furnace for heating refers to the method in Example 1, the only difference is that the combustion temperature in step (2) is 810°C-850°C. The coal-fired efficiency of the heating furnace described in this embodiment is> 87%, and the NO in the flue gas after combustion in the burnout zone x Emission concentration is less than 190mg / nm 3 , CO emission concentration is less than 480mg / nm 3 , SO 2 Emissions below 290mg / Nm 3 , does not produce black smoke.

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Abstract

The invention provides a pre-pyrolysis type civil heating furnace and its heating method. The heating furnace includes a furnace body, and the furnace body is provided with a longitudinal partition on the top wall of the furnace, which divides the interior of the furnace body into a first cavity connected at the bottom. Chamber and the second chamber, the first chamber is a convective heat exchange area, the middle of the second chamber is equipped with a fire grate, which divides the chamber into upper and lower areas, above the fire grate is an oxygen-free pyrolysis area, and below the fire grate It is a semi-coke combustion zone, and a feeding port is set on the furnace wall exiting the anaerobic pyrolysis zone, a primary tuyere is set under the grate between the anaerobic pyrolysis zone and the semi-coke combustion zone, and a communication port is set in the second chamber. The heat pipe of the anaerobic pyrolysis zone and the semi-coke combustion zone; the area connected to the bottom of the first chamber and the second chamber is the burnout zone, and the slagging grate is arranged between the semi-coke combustion zone and the burnout zone, so The second tuyere is set in the burnout zone. The invention improves and optimizes the furnace body of the heating furnace, reduces the emission of pollutants from the heating furnace, controls the combustion, and reduces the labor intensity of operation.

Description

technical field [0001] The invention belongs to the field of coal combustion equipment, and relates to a prepyrolysis type civil heating furnace and a heating method thereof. Background technique [0002] In areas that cannot be covered by urban heat pipe networks, the heating of small regional boiler rooms using civil heating furnaces has developed rapidly. Civil heating stoves mainly refer to small household coal-fired stoves that use loose coal as fuel (including bituminous coal and anthracite) for heating purposes; civilian heating stoves also include stoves that use honeycomb coal and briquettes as fuel. [0003] A large number of experimental studies have shown that the current civilian stoves on the market have problems such as incomplete combustion and poor environmental performance. After adding coal, they will heat up rapidly, and volatiles will precipitate rapidly, resulting in a large amount of sulfur and nitrogen oxides. Rapid precipitation and emission . [0...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H1/28F24H9/18F23B10/00F23B90/06F23L1/02F23L9/00
CPCF23B10/00F23B90/06F23L1/02F23L9/00F24H1/285F24H9/1845
Inventor 王振平王海苗刘忠攀李亚周刚白文凯巩运迎
Owner YANKUANG GRP CO LTD
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