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Smoke circulation type reciprocating grate combustion biomass steam boiler

A technology of reciprocating grate and flue gas circulation, applied in steam generation method using pressure combustion, combustion air/fuel supply, combustion method, etc., can solve the problem of increased exhaust pollutant content, fuel waste, and lower furnace temperature problems, to achieve the effect of increasing temperature, reducing pollutant content, and improving combustion efficiency

Pending Publication Date: 2022-07-12
HUNAN CHANGHONG BOILER
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  • Claims
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Problems solved by technology

However, when a large amount of cold air enters the furnace, the temperature in the furnace will be lowered, which will aggravate the incomplete combustion of fuel, lead to a large waste of fuel, and increase the content of exhaust pollutants.

Method used

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  • Smoke circulation type reciprocating grate combustion biomass steam boiler
  • Smoke circulation type reciprocating grate combustion biomass steam boiler
  • Smoke circulation type reciprocating grate combustion biomass steam boiler

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Embodiment Construction

[0025] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the embodiments and the accompanying drawings, and the contents mentioned in the embodiments are not intended to limit the present invention.

[0026] It should be noted in advance that, in the present invention, unless otherwise expressly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it may be a fixed connection, or It may be a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, in the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may include direct contact between the first and second features...

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Abstract

A flue gas circulation type reciprocating grate biomass-fired steam boiler relates to the technical field of biomass-fired boilers and comprises a boiler body, a hearth is arranged in the boiler body and connected with an exhaust passage, a reciprocating grate used for conveying biomass fuel is arranged in the hearth, and the exhaust passage is connected with the reciprocating grate. A first air preheater and a second air preheater are arranged on the exhaust channel, and air is introduced through the primary air channel, preheated through the first air preheater and then sent to the reciprocating grate to promote combustion of biomass fuel. Air is introduced by arranging a secondary air duct, is preheated by a second air preheater and then is fed into the hearth to disturb high-temperature flue gas. According to the invention, insufficient combustion of biomass fuel can be avoided, and the pollutant content of discharged tail gas is reduced.

Description

technical field [0001] The invention relates to the technical field of biomass-fired boilers, in particular to a biomass-fired steam boiler of a flue gas circulation type reciprocating grate. Background technique [0002] Biomass boilers are characterized by biomass as fuel. It can effectively use biomass as fuel, which can reduce pollution and effectively utilize remaining energy. [0003] Boiler exhaust heat loss is the largest heat loss of the boiler. The higher the exhaust temperature, the greater the boiler heat loss. Traditional boilers generally use economizers to reduce the exhaust gas temperature, and then arrange the blower to input cold air into the furnace to provide sufficient oxygen for the combustion of the boiler. However, a large amount of cold air entering the furnace will reduce the temperature in the furnace, resulting in aggravation of incomplete combustion of fuel, resulting in a large amount of fuel waste, and increasing the content of exhaust pollut...

Claims

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Application Information

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IPC IPC(8): F22B1/22F23B80/04F23L1/00F23L9/00F23L15/00
CPCF22B1/22F23B80/04F23L15/00F23L1/00F23L9/00Y02E20/34
Inventor 曹希新刘新龙邹友民刘红斌娄经松
Owner HUNAN CHANGHONG BOILER
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