High-efficiency coal heating furnace simultaneously reducing smoke, sulfur dioxide and nitrogen oxide emission, heating method and application

A heating furnace and coal-fired technology, which is applied in the field of high-efficiency coal-fired heating furnace and heating, can solve the problems of low universality of coal-fired types, reduce the effect of graded combustion and emission reduction, etc., to improve the efficiency of sulfur fixation and reduce nitrogen oxides Generation and emission, and the effect of improving combustion efficiency

Pending Publication Date: 2017-10-10
YANKUANG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] In view of the instability of combustion and pollutant emissions in existing civil heating furnaces and staged combustion furnaces, the universality of coal-fired types is low, and the impact of staged combustion on NO x To solv

Method used

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  • High-efficiency coal heating furnace simultaneously reducing smoke, sulfur dioxide and nitrogen oxide emission, heating method and application
  • High-efficiency coal heating furnace simultaneously reducing smoke, sulfur dioxide and nitrogen oxide emission, heating method and application
  • High-efficiency coal heating furnace simultaneously reducing smoke, sulfur dioxide and nitrogen oxide emission, heating method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] like Figure 4 As shown, the present embodiment provides a coal-fired heating furnace and a coal-fired heating method based on staged combustion. The top side of the main body 1 of the coal-fired heating furnace is provided with a coal filling port 2, and the top of the main body 1 of the coal-fired heating furnace is connected to the heating furnace. A chimney 3 is arranged on the opposite side of the coal mouth 2; a water jacket partition 4 is arranged vertically on the upper part of the main body 1 of the coal-fired heating furnace and the furnace roof, and the water jacket partition 4 divides the upper part of the main body 1 of the coal-fired heating furnace into a The dry distillation pyrolysis zone 5 connected to the port 2 and the flue gas burnout heat exchange zone 6 connected to the chimney 3; the lower area of ​​the water jacket partition 4 in the main body 1 of the coal-fired heating furnace is the semi-coke combustion zone 7; the semi-coke A furnace grate 8...

Embodiment 2

[0095] This embodiment provides a coal-fired heating furnace based on staged combustion and its heating method. The structure of the coal-fired heating furnace refers to Example 1, the difference is that the grate 8 is movable, and there is a Air distribution holes; the height-to-diameter ratio H / D of the hearth in the dry distillation pyrolysis zone 5 is 2.

[0096] The heating method of the coal-fired heating furnace refers to Example 1.

Embodiment 3

[0098] This embodiment provides a coal-fired heating furnace based on staged combustion and its heating method. The structure of the coal-fired heating furnace refers to Example 1, the difference is that the height-to-diameter ratio H / D of the furnace in the carbonization pyrolysis zone 5 is 5.

[0099] The heating method of the coal-fired heating furnace refers to Example 1.

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Abstract

The invention provides a coal heating furnace simultaneously reducing smoke, sulfur dioxide and nitrogen oxide emission, a heating method and application. A coal feeding port is formed in one side of the top of a coal heating furnace body, and a chimney is arranged on the side, opposite to the coal feeding port, of the top of the main body. A water jacket partition plate is vertically arranged on the upper portion inside the coal heating furnace body and divides the upper portion inside the coal heating furnace body into a dry distillation pyrolysis zone which is connected with the coal feeding port and a smoke burnout heat exchanging zone which is connected with the chimney. The zone which is not provided with a partition plate on the lower portion inside the coal heating furnace body is a semi-coke burning zone. A furnace grate is obliquely arranged on the lower portion of the semi-coke burning zone, and a primary air opening is formed below the furnace grate. A burnout zone above the semi-coke burning zone is provided with a secondary air opening. The burnout zone is internally provided with water heat exchanging pipes for heating. The coal heating furnace is stable in burning, high in heat efficiency and suitable for smoke-free emission of all kinds of soft coal, biomass and other fuels, especially when high-sulfur smoke-free burns, and meanwhile the smoke, SO2 and NOx emission is effectively reduced.

Description

technical field [0001] The invention belongs to the field of coal-fired combustion equipment, and relates to a coal-fired heating furnace, a heating method and its application, in particular to a high-efficiency coal-fired heating furnace, a heating method and its application which simultaneously reduce the emission of soot, sulfur dioxide and nitrogen oxides. Background technique [0002] Civil coal-fired stoves mainly refer to small household coal-fired stoves that use loose coal as fuel (including bituminous coal and anthracite) for the purpose of cooking or heating; civilian coal-fired stoves also include stoves that use briquettes and briquettes as fuel. [0003] At present, there are two main types of civilian stoves on the market: [0004] Front firing furnace (Fig. 1(a)): It is the simplest and most common traditional direct combustion method. When the solid fuel is burned, the flame propagates along the natural flow direction of the hot flue gas, with high combustio...

Claims

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Application Information

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IPC IPC(8): F24B1/183F24B1/191F24B1/193C10B53/04
CPCF24B1/183F24B1/191F24B1/1915F24B1/193C10B53/04Y02B40/00
Inventor 白丁荣王振平梁斌刘新华张海燕白浩隆马喜红郝江平
Owner YANKUANG GRP CO LTD
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