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Steam boiler capable of burning biomass

A technology for steam boilers and biomass, which is applied to steam boilers, combustion product treatment, steam generation, etc., can solve the problem of not revealing the biomass fuel feeding method, combustion air distribution method, etc., and achieves simple structure, safe and reliable operation. , the effect of short construction period

Inactive Publication Date: 2010-11-10
GUANGZHOU DEVOTION THERMAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, we can see from the above content that the above-mentioned patented technology does not disclose how to properly design the feeding method of biomass fuel and the air distribution method of combustion air

Method used

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  • Steam boiler capable of burning biomass
  • Steam boiler capable of burning biomass

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Embodiment 1

[0019] Please refer to figure 1 , the biomass-fired steam boiler of the present invention includes: a boiler body 100, which is provided with a furnace 110 for burning and releasing heat of biomass fuel and a heat exchange device 300 above the furnace 110; a feed system 400, which is connected with the boiler The main body 100 is connected to send the biomass fuel into the furnace 110 for combustion; and, the steam-water pipeline system (not labeled), which is connected to the heat exchange device 300 to exchange the heat generated by the biomass combustion; wherein, the furnace 110 A reciprocating fire grate 700 made of RTSi5 material is provided, and the reciprocating fire grate 700 is arranged at an inclination angle of about 15 degrees relative to the horizontal plane from the proximal end of the furnace close to the feeding system 400 to the far end of the furnace far away from the feeding system 400. The downward inclination makes the biomass fuel falling on the reciproc...

Embodiment 2

[0025] As another kind of scheme of the present invention, other parts are identical with embodiment 1, and difference is:

[0026] The material of the reciprocating grate is made of other refractory materials except RTSi5.

[0027] The reciprocating grate 700 slopes downward at an inclination angle of about 20 degrees relative to the horizontal plane from the proximal end of the furnace close to the feeding system 400 to the far end of the furnace away from the feeding system 400 .

[0028] About 50% of the total supply air volume of the biomass-fired steam boiler is the first-level wind, about 35% of the total supply air volume is the third-level wind, and about 15% of the total supply air volume is the third-level wind .

[0029] A fire wall is built at the exit of the furnace to help stop the fire, so that the fuel has sufficient combustion space and combustion time.

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Abstract

The invention discloses a steam boiler capable of burning biomass, comprising a boiler body, a loading system and a vapour-water pipe system, wherein the boiler body is provided with a hearth in which the biomass fuel burns so as to release heat and a heat exchange device positioned above the hearth; the loading system is connected with the boiler body so as to convey the biomass fuel to the hearth for burning; the vapour-water pipe system is connected with the heat exchange device so as to exchange heat generated by the burning of the biomass; the hearth is internally provided with a reciprocal grate which downward slopes relatively to the level in an angle of inclination of 5-25 degrees from the end of the hearth close to the loading system to the far end far away from the loading system so as to enable the biomass fuel falling on the fire grate to be pushed and extruded and to roll relatively to the fire grate. In the invention, the fire grate moves relatively to fuel, the fuel is constantly extruded in the process of being pushed so as to damage coke and ash shells; and the fuel rolls slowly, thereby enabling the material layer to be loosened and facilitating full combustion.

Description

technical field [0001] The invention relates to a steam boiler, in particular to a steam boiler using biomass as fuel. Background technique [0002] Biomass fuel (BMF) is green energy and a fuel encouraged by national policies. It has the following characteristics: 1. It can realize the reduction of greenhouse gas CO 2 Ecological "zero" emission: the energy of BMF comes from the natural CO 2 absorption, therefore, BMF has CO 2 Ecological "zero" emission characteristics. 2. Typical low-carbon green energy: The combustion of low-carbon energy BMF is mainly volatile, and its fixed carbon content is about 15%, which is a typical low-carbon fuel; the sulfur content is lower than diesel oil, only 0.05% , SO can be realized without installing a desulfurization device 2 The ash content is only 1.8%, which is about 1 / 10 of the coal-based fuel, and the dust emission can be achieved by setting up a simple dust removal device; BMF has low nitrogen content and high oxygen content, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B31/00F22B31/08F23H11/12F23L1/02F23L9/00F23J3/02F23K3/00
Inventor 常厚春李祖芹马革耿生斌尹显录张湘波
Owner GUANGZHOU DEVOTION THERMAL TECH
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