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Wide-load biomass cyclone burner suitable for biomass coupling coal-fired boiler

A swirl burner and coal-fired boiler technology, which is applied to burners, burners, combustion methods and other directions of burning powder fuel, can solve the problem of inability to adapt to wide loads to adjust the amount of biomass blending, poor adaptability to biomass fuel types, etc. question

Pending Publication Date: 2020-02-25
HARBIN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the pulverized coal swirl burner has poor adaptability to the type of biomass fuel in the direct co-combustion power generation system of biomass and coal-fired boilers, and cannot adapt to wide loads to adjust the amount of biomass blending, the present invention proposes a bio Wide-load biomass swirl burner for mass-coupled coal-fired boiler

Method used

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  • Wide-load biomass cyclone burner suitable for biomass coupling coal-fired boiler
  • Wide-load biomass cyclone burner suitable for biomass coupling coal-fired boiler
  • Wide-load biomass cyclone burner suitable for biomass coupling coal-fired boiler

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specific Embodiment approach 1

[0019] Specific implementation mode one: combine figure 1 and figure 2 Describe this embodiment, the wide-load biomass swirl burner suitable for biomass coupled coal-fired boilers described in this embodiment includes a burner body 1, a swirl concentrator 4, a swirler 7, a central air cylinder 8, a primary The air duct 9, the secondary air duct 10 and the central air introduction pipe 11, the central air duct 8 is horizontally installed in the burner main body 1, the primary air duct 9 is set on the central air duct 8, and the secondary air duct 10 is set on the primary air duct On the cylinder 9, the swirl concentrator 4 is installed on the outer wall of one end of the central air cylinder 8, the other end of the central air cylinder 8 is connected with the central air inlet pipe 11, and the cyclone 7 is installed on the outer wall of the primary air cylinder 9 and the secondary Between the inner walls of the air duct 10.

specific Embodiment approach 2

[0020] Specific implementation mode two: combination figure 2 Describe this embodiment, the swirl concentrator 4 described in this embodiment is provided with a plurality of swirl concentration blades 21, and a plurality of swirl concentration blades 21 are evenly distributed along the circumference of the swirl concentrator 4; the cyclone 7 is set There are a plurality of swirl blades 20 , and the plurality of swirl blades 20 are evenly distributed along the circumference of the swirler 7 . After the biomass powder is graded and concentrated by the rotating concentrating blade 21, it has better ignition ability. The number and relative position of the secondary wind swirl blades 20 are consistent with the swirl concentration blades 21 .

specific Embodiment approach 3

[0021] Specific implementation mode three: combination figure 1 To illustrate this embodiment, the wide-load biomass swirl burner for biomass-coupled coal-fired boilers described in this embodiment also includes a biomass powder inlet elbow 2, and the biomass powder inlet elbow 2 is installed in the primary air duct 9 of the entrance. Other components and connections are the same as those in the first embodiment.

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Abstract

The invention relates to a wide-load biomass cyclone burner suitable for biomass coupling a coal-fired boiler, relates to the wide-load biomass cyclone burner, and aims to solve the problem that the adaptability of a pulverized coal cyclone burner to a biomass fuel type is poor in a direct mixed-combustion power generation system of the biomass and the coal-fired boiler, and the wide-load regulation of biomass blending amount can not be adapted. The cyclone burner comprises a wide-load biomass cyclone burner body, a swirl concentrator, a swirler, a central air cylinder, a primary air cylinder,a secondary air cylinder and a central air inlet pipe, the central air cylinder is horizontally installed in the burner body, the primary air cylinder sleeves the central air cylinder, the secondaryair cylinder sleeves the primary air cylinder, the swirl concentrator is installed on the outer wall of one end of the central air cylinder, the other end of the central air cylinder is connected withthe central air inlet pipe, and the swirler is installed between the outer wall of the primary air cylinder and the inner wall of the secondary air cylinder. The burner is applied to the technical field of boiler combustion devices and arrangement of combustion systems thereof.

Description

technical field [0001] The invention relates to a wide-load biomass swirl burner, in particular to a wide-load biomass swirl burner suitable for biomass-coupled coal-fired boilers, and belongs to the technical field of boiler combustion devices and combustion system layout. Background technique [0002] Agricultural and forestry biomass co-combustion power generation is an important transitional means for the thermal power industry to de-coal. The international biomass co-combustion power generation technology route is mainly based on direct co-combustion of biomass and coal-fired boilers. The combustion characteristics of biomass and coal-fired are very different, and the co-combustion of biomass will inevitably have a certain impact on the coal-fired boiler, and the type and quantity of co-combustion biomass are different, and the air distribution form, Location also varies. Domestic biomass co-combustion power generation technology is relatively backward, co-combustion p...

Claims

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Application Information

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IPC IPC(8): F23D1/02
CPCF23D1/02
Inventor 于强徐彦辉于景泽关靖宇殷亚宁韩升利魏国华
Owner HARBIN BOILER
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