Biomass burning fluidized bed boiler

A material flow, boiler technology, applied in the direction of fluidized bed combustion equipment, combustion method, combustion type, etc.

Active Publication Date: 2013-03-20
XIANGTAN BOILER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technical solution focuses on solving the problem that biomass materials cannot be fully burned when they reach the furnace outlet in a short period of time due to uneven particle size and large humidity difference. The separator can separate flue gas and incompletely burned biomass materials for re-combustion

Method used

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  • Biomass burning fluidized bed boiler
  • Biomass burning fluidized bed boiler
  • Biomass burning fluidized bed boiler

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Embodiment Construction

[0023] refer to Figure 1 to Figure 3 , the present invention includes a furnace wall, a primary air duct 14, and a secondary air duct 15. The furnace wall is a heavy or semi-light furnace wall, including a furnace 1, and a separation chamber 12 is arranged on one side of the furnace 1, and the entrance of the separation chamber 12 is It is connected to the channel at the outlet of the furnace 1, and the entrance of the separation chamber 12 has an arc-shaped cover 10, and the centerline direction of the arc-shaped cover 10 is provided with a flue gas outlet 17, and the discharge port of the separation chamber 12 is connected to the inlet of the furnace 1. A feeder 18 is provided at the connection; a water-cooled pipe 20 is provided around the furnace 1 . The separation chamber 12 can also be called a cyclone separation chamber. This technical solution focuses on solving the problem that due to the uneven particle size and large humidity difference of the biomass material, th...

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Abstract

The invention discloses a biomass burning fluidized bed boiler which comprises a boiler wall, a primary air pipe, a secondary air pipe, an air distribution plate and an air distribution pipe, wherein the boiler wall is a heavy or semi-light boiler wall; and a water cooling pipe is arranged around a furnace. The biomass burning fluidized bed boiler also comprises a furnace, wherein a separation chamber is arranged on one side of the furnace; an inlet of the separation chamber is connected with a channel at an outlet of the furnace; an arc cover is arranged at the inlet of the separation chamber; a membrane water cooling wall is arranged on the side wall of the separation chamber; a smoke outlet is arranged in the center line direction of the arc cover; and a return feeder is arranged at the joint between a discharge port of the separation chamber and a return inlet of the furnace. The biomass burning fluidized bed boiler disclosed by the invention mainly solves the problem that because the particle size of the biomass material is not uniform and the humidity difference is large, sufficient combustion can not be realized at the outlet of the furnace in a short time; and a separator can separate smoke and the non-sufficiently burnt biomass material for further combustion.

Description

technical field [0001] The invention relates to a boiler, especially a biomass-fired fluidized bed boiler. Background technique [0002] Biomass fuel is a renewable energy source. The development and utilization of biomass energy has broad prospects. Biomass combustion technology is undoubtedly suitable for my country's energy development needs. Biomass boilers have received more and more attention and research and development. [0003] In the past 20 years, although my country has made great progress in the utilization of biomass combustion, compared with developed markets, there is still a big gap in terms of technology and application. / h small and medium-sized boilers that burn wood chips and other biomass particles are all DZL series water-fire tube boilers or SZL series water-tube chain grate boilers, and the thermal efficiency of the floor-fired furnace is relatively low. When using layered combustion, due to the high moisture content, the drying and preheating proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23C10/08F23C10/18F23C10/20F23C10/24F23C10/22
Inventor 宋平其他发明人请求不公开姓名
Owner XIANGTAN BOILER
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