Combustion system with pre-combustion chamber combustors arranged on two side walls of boiler and combustion method

A technology of combustion system and pre-combustion chamber, which is applied in the direction of combustion method, combustion using lump fuel and liquid fuel, combustion using lump fuel and gaseous fuel, etc., and can solve the problems of poor combustion stability under low load and high emission , to achieve the effect of increasing the load range and improving the combustion efficiency

Active Publication Date: 2021-06-04
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of poor low-load stable combustion ability and NO x To solve the problem of high emissions, a combustion system and combustion method with pre-combustion chamber burners on the walls on both sides of the boiler are proposed

Method used

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  • Combustion system with pre-combustion chamber combustors arranged on two side walls of boiler and combustion method
  • Combustion system with pre-combustion chamber combustors arranged on two side walls of boiler and combustion method
  • Combustion system with pre-combustion chamber combustors arranged on two side walls of boiler and combustion method

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specific Embodiment approach 1

[0026] Specific implementation mode one: combine Figure 1 to Figure 5 To illustrate this embodiment, the combustion system with pre-chamber burners on both sides of the boiler described in this embodiment includes a furnace 1, two sets of main burner mechanisms and two sets of pre-chamber burner mechanisms, and two sets of main burners The mechanism is relatively arranged on the two side walls of the furnace 1, and two sets of pre-chamber burner mechanisms are relatively arranged on the other two walls of the furnace 1.

[0027] The boiler is a power station boiler, specifically an offset coal-fired boiler.

specific Embodiment approach 2

[0028] Specific implementation mode two: combination Figure 1 to Figure 5 Describe this embodiment, each group of pre-chamber burner mechanisms in this embodiment includes a powder feeder 4, a recirculation flue gas pipe 5, a powder storage bin 6 and a plurality of pre-chamber burners 3, and a plurality of pre-chamber burners 3 are The cloth is arranged at the bottom of the side wall of the furnace 1, and the powder outlet end of the powder storage bin 6 is connected with the powder inlet end of the powder feeder 4, and the powder outlet end of the powder feeder 4 is respectively connected with multiple pre-chamber burners 3 through powder feeding pipes , The powder feeding pipe is provided with a recirculation flue gas pipe 5, and the recirculation flue gas pipe 5 is provided with a control valve. The undisclosed technical features in this embodiment are the same as those in the first embodiment.

[0029] The pre-combustion chamber burner 3 is separately connected with the ...

specific Embodiment approach 3

[0031] Specific implementation mode three: combination Figure 1 to Figure 5 Describe this embodiment, a plurality of pre-chamber burners 3 in each group of pre-chamber burner mechanisms in this embodiment are evenly arranged in n layers, where n is a positive integer, and n layers of pre-chamber burners 3 are arranged from bottom to top They are arranged layer by layer on the side wall of the furnace 1, wherein the lowermost pre-combustion chamber burner 3 is arranged at the bottom of the side wall. The undisclosed technical features in this embodiment are the same as those in the first or second specific embodiment.

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Abstract

The invention provides a combustion system with pre-combustion chamber combustors arranged on two side walls of a boiler and a combustion method, and relates to the technical field of power station boiler combustion. The combustion system and the combustion method aim to solve the problems that an existing power station pulverized coal boiler is poor in low-load stable combustion capacity and high in NOx emission. The combustion system comprises a hearth, two sets of main combustor mechanisms and two sets of pre-combustion chamber combustor mechanisms. The two sets of main combustor mechanisms are oppositely arranged on the two side walls of the hearth, and the two sets of pre-combustion chamber combustor mechanisms are oppositely arranged on the other two side walls of the hearth. The combustion system and the combustion method are used for the power station boiler.

Description

technical field [0001] The invention relates to the technical field of power plant boiler combustion, in particular to a combustion system and a combustion method with pre-combustion chamber burners arranged on the walls on both sides of the boiler. Background technique [0002] At present, pulverized coal boilers in power stations are still the main source of electricity in China. In the study of China's "14th Five-Year Plan" power development plan, it was proposed that my country should strictly control the new scale of coal power in the eastern and central regions, eliminate backward production capacity, and carry out flexible transformation of coal power at the same time. , to transform coal power from electricity-type energy to electricity-type power supply. Pulverized coal boilers need to flexibly adapt to power demand and often need to operate at low loads. Therefore, ensuring the stable operation of the boiler under low load is an urgent problem to be solved in the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C5/08F23K3/02F23L1/00F23L9/00
CPCF23C5/08F23K3/02F23L1/00F23L9/00F23K2203/201
Inventor 陈智超乔彦宇关硕曾令艳李争起
Owner HARBIN INST OF TECH
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