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Concentrated and thin fuel-saving igniting coal powder burner

A pulverized coal burner, a technology for thick and thin pulverized coal, which is applied to burners, burners for burning powder fuel, combustion methods, etc., can solve problems such as affecting the safe and economical operation of power station boilers, difficult to guarantee coal quality, and unstable combustion.

Inactive Publication Date: 2007-08-22
杭州意能节能技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the coal supply is tight, and the quality of coal used in the boiler is difficult to be guaranteed. On the one hand, when the power station is operating under high load, the slagging in the furnace is serious. On the other hand, when the load of the general pulverized coal boiler is lower than 70%, the combustion will be unstable. , in order to maintain stable combustion under low load, oil must be added to support combustion, which seriously affects the safe and economical operation of power plant boilers

Method used

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  • Concentrated and thin fuel-saving igniting coal powder burner
  • Concentrated and thin fuel-saving igniting coal powder burner

Examples

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example 1

[0014] Referring to Figures 1 and 2, the present invention includes a burner body 1, a primary combustion chamber 2, and an ignition heat source injection port 3. The primary combustion chamber 2 is placed in the combustion body 1 and fixed by ribs 12. The burner body 1 The entrance is provided with a dense and thin coal powder separation device. In this embodiment, the thick and thin coal powder separation device is an elbow 4, and a separation partition 5 is provided in the primary combustion chamber 2, and the separation partition 5 is located in the primary combustion chamber 2 In the first half, it divides the first half of the first-stage combustion chamber 2 into upper and lower areas, which are respectively a dense coal powder area 6 and a light coal powder area 7. The powder area 6 is provided with an ignition heat source injection inlet 3, so that after the primary wind carries the pulverized coal into the elbow 4, due to the large inertia of the pulverized coal, most...

Embodiment 2

[0016] Referring to Fig. 3, the structure shown in this embodiment is the same as that of Embodiment 1 except that the structure of the thick-lean pulverized coal separation device is different from that shown in Embodiment 1.

[0017] In this embodiment, the thick and thin pulverized coal separation device is composed of a housing 10 and louvers 11 , and the louvers 11 are installed in the housing 10 . When the primary wind carries pulverized coal into the thick-lean separation device, a large amount of pulverized coal hits the louvers 11 due to inertia, and rebounds to the other side to make the concentration of pulverized coal on this side high, thereby achieving the effect of thick-lean separation.

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PUM

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Abstract

The present invention relates to a dense-thin oil-saving ignition coal powder combustor. It includes combustor self-body, one-stage combustion chamber and ignition heat-source nozzle. It is characterized by that in the described combustor self-body that in the described combustor self-body inlet a dense-thin coal powder separation device is set, in the described one-stage combustion chamber interior two separation partition boards are set, said one-stage combustion chamber is divided into dense coal powder zone, thin coal powder zone and dense-thin coal powders mixing zone by means of partition boards, in the described dense coal powder zone an ignition heat-source nozzle is set. Said invention also provides the working principle of said coal powder combustor and its concrete operation method.

Description

technical field [0001] The invention belongs to a pulverized coal burner, in particular to a burner for starting ignition and low-load stable combustion of a pulverized coal boiler in a power station. Background technique [0002] At present, the coal supply is tight, and the quality of coal used in the boiler is difficult to be guaranteed. On the one hand, when the power station is operating under high load, the slagging in the furnace is serious. On the other hand, when the load of the general pulverized coal boiler is lower than 70%, the combustion will be unstable. , in order to maintain stable combustion under low load, oil must be added to support combustion, which seriously affects the safe and economical operation of power plant boilers. The burner is the key to the ignition and stable combustion of power plant boilers. In order to save fuel consumption during the start-up and stable combustion of thermal power plant boilers, a pulverized coal burner that can greatly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/00F23K3/02
Inventor 李凤瑞黄郁明
Owner 杭州意能节能技术有限公司
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