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W flame boiler with double-cyclone-barrel thick and thin pulverized coal separation type combustors

A technology of thick and light pulverized coal and double cyclones, which is applied in the direction of burners, burners, and combustion methods for burning powder fuels, and can solve the problems of flexibility, peak-shaving load that cannot reach 20%, poor operating capacity, low-load stable combustion, etc. , to achieve the effect of improving the flexible peak shaving ability, improving the characteristics of ignition and stable combustion

Inactive Publication Date: 2020-04-17
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the W flame pot has ultra-low load stable combustion, poor operation ability, and the flexibility of peak-shaving load cannot reach 20%.

Method used

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  • W flame boiler with double-cyclone-barrel thick and thin pulverized coal separation type combustors
  • W flame boiler with double-cyclone-barrel thick and thin pulverized coal separation type combustors
  • W flame boiler with double-cyclone-barrel thick and thin pulverized coal separation type combustors

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specific Embodiment approach 1

[0024] Specific implementation mode one: combine Figure 2-Figure 4Describe this embodiment, the W-flame boiler with double-cyclone thick and thin pulverized coal separation burners described in this embodiment, it includes an upper furnace 1, a lower furnace 2, a front furnace arch 3, a rear furnace arch 4, a front wall, The rear wall, multiple double-cyclone thick and thin pulverized coal separated burners 5 and the secondary air nozzle 8 under the multi-layer arch; it is characterized in that the double cyclone separated thick and thin pulverized coal burner 5 includes two dense pulverized coal airflow nozzles 6 and two exhaust gas nozzles 7; the upper furnace 1, the front furnace arch 3, the front wall, the lower furnace 2, the rear wall and the rear furnace arch 4 constitute the furnace body, and the secondary air nozzles 8 under the multi-layer arch are sequentially arranged from top to bottom Set on the front wall and the back wall, the double-cyclone thick and thin pul...

specific Embodiment approach 2

[0025] Specific implementation mode two: combination Figure 2-Figure 4 Describe this embodiment, a W flame boiler with a double-cyclone thick and thin pulverized coal separation burner described in this embodiment, the double cyclone thick and thin pulverized coal separation burner 5 also includes two hollow swirl adjustment rods 9, two A micro-oil ignition gun 10, two pulverized coal deflectors 11 and two oxygen delivery guns 12, each pulverized coal deflector 11 is installed in a thick pulverized coal gas flow spout 6, each micro-oil ignition gun 10 is inserted in a In the hollow swirl adjustment rod 9, the hollow swirl adjustment rod 9 is installed in the pulverized coal guide body 11, and the oxygen delivery gun 12 is inserted on the side wall of the dense coal pulverized air flow nozzle 6. Other methods are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Specific implementation mode three: combination Figure 2-Figure 4 Describe this embodiment, the W flame boiler of double-cyclone thick and thin pulverized coal separation burner described in this embodiment, the double cyclone thick and thin pulverized coal separation burner 5 also includes an oxygen pipeline 15 and a high-pressure oxygen storage tank 16, Each oxygen gun 12 communicates with a high-pressure oxygen storage tank 16 through an oxygen pipeline 15, and other methods are the same as in the first embodiment.

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Abstract

The invention provides a W flame boiler with double-cyclone-barrel thick and thin pulverized coal separation type combustors, and relates to a power station boiler which adopts the flexible peak regulation technology. The W flame boiler with the double-cyclone-barrel thick and thin pulverized coal separation type combustors is used for solving the problems that a W flame boiler is poor in ultralowload stable combustion and operation capacity, and the flexible peak regulation load cannot be 20%. The W flame boiler comprises an upper combustion chamber, a lower combustion chamber, a front boiler arch, a rear boiler arch, a front wall, a rear wall, the multiple double-cyclone-barrel thick and thin pulverized coal separation type combustors and multi-layer arch bottom secondary air nozzles. Each double-cyclone-barrel thick and thin pulverized coal separation type combustor comprises two thick pulverized coal airflow nozzles and two exhaust air nozzles. The upper combustion chamber, the front boiler arch, the front wall, the lower combustion chamber, the rear wall and the rear boiler arch are combined to form a boiler body. The multi-layer arch bottom secondary air nozzles are arrangedon the front wall and the rear wall in sequence from top to bottom. The double-cyclone-barrel thick and thin pulverized coal separation type combustors are installed on the front boiler arch and therear boiler arch in a linear mode, and the corresponding thick pulverized coal airflow nozzles and the corresponding exhaust air nozzles of each double-cyclone-barrel thick and thin pulverized coal separation type combustor communicate with the boiler body. The invention belongs to the field of boilers.

Description

technical field [0001] The invention relates to a power station boiler adopting flexible peak-shaving technology, in particular to a W-flame boiler with a double cyclone tube separation type burner for thick and thin pulverized coal. Background technique [0002] In recent years, with the intervention of large-scale renewable energy, China's power system has undergone tremendous changes. Renewable energy generation capacity is taking an increasing share in the grid. However, due to the limitations of the power generation method itself, the output instability of renewable energy power generation poses a huge challenge to the regulation capability of the power system; in addition, a large number of uncertain factors on the power generation side and the demand side also affect the security and stability of the power system run. Statistics show that in 2015, China's annual net thermal power installed capacity was 72.02 million kilowatts (including 51.86 million kilowatts of co...

Claims

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Application Information

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IPC IPC(8): F23C7/00F23D1/02F23L7/00F23K3/02
CPCF23C7/002F23D1/02F23K3/02F23L7/007Y02E20/34
Inventor 李争起杜贺郑智巍曾令艳陈智超
Owner HARBIN INST OF TECH
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