Ultralow-emission nitrogen oxide biomass chain boiler

A nitrogen oxide and chain boiler technology, applied in the boiler field, can solve the problems of nitrogen oxide environmental hazards, large-scale industrial production, large-scale application obstacles, etc., to reduce the content of nitrogen oxides, ensure the demand, and reduce emissions Effect

Active Publication Date: 2015-05-27
迪森(常州)能源装备有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the emission of nitrogen oxides will cause serious harm to the environment
Therefore, the country has specified relevant standards for boiler emissions, referring to GB13271-2014 "Emission Standards of Air Pollutants for Boilers"

Method used

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  • Ultralow-emission nitrogen oxide biomass chain boiler
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  • Ultralow-emission nitrogen oxide biomass chain boiler

Examples

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Embodiment Construction

[0026] The present invention will be further described below with a preferred embodiment.

[0027] refer to Figure 1 to Figure 5 , an ultra-low emission nitrogen oxide biomass chain boiler, which includes a boiler body 1, a chain grate and a screw feeder.

[0028] The boiler body 1 is provided with an upper header 11 , a lower header 12 , an upper drum 13 and a lower drum 14 .

[0029] The upper header 11 and the lower header 12 are connected through a membrane water wall to form the lower furnace 15 and the upper flue gas radiation chamber 16. The boiler body 1 has a front arch 151 and a rear arch 152 at the front end and rear end of the furnace 15 respectively. .

[0030] The upper drum 13 and the lower drum 14 are placed in the flue gas convection box 17, and the flue gas convection box 17 is provided with a convection tube bundle 171, and the two ends of the convection tube bundle 171 are respectively connected to the upper drum 13 and the lower drum 14 , the flue gas ...

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PUM

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Abstract

The invention provides an ultralow-emission nitrogen oxide biomass chain boiler. The ultralow-emission nitrogen oxide biomass chain boiler comprises a boiler body, a chain grate and a spiral feeder, wherein an upper header, a lower header, an upper boiler barrel and a lower boiler barrel are arranged in the boiler body; a hearth, a flue gas radiation chamber, a flue gas convection box and a smoke exhaust box are arranged in the boiler body; an air preheater is arranged in the smoke exhaust box; the chain grate is arranged at the bottom of the hearth; primary air is supplied from the air chamber of the chain grate; in particular, hearth front and back air jet pipes are arranged on front and back arch throats respectively, and are connected with front and back air jet pipe fans; secondary air is supplied in two segments from front and back arches. Furthermore, the primary air can be supplied in two segments from the air chamber of the chain grate; the air source of the primary air and/or the secondary air can be hot air output by the air preheater; 1-3 afterburning ports are formed beside a feeding hole in the front arch throat; a denitrification combustion device is correspondingly arranged on each afterburning port. By adopting the ultralow-emission nitrogen oxide biomass chain boiler, zero emission of carbon dioxide is basically realized, and the effect of low emission of dust, nitrogen oxide and sulfur dioxide is achieved.

Description

technical field [0001] The invention relates to the technical field of boilers, in particular to chain boilers using biomass as fuel. Background technique [0002] Biomass boilers have the function of providing steam and hot water heat sources for industrial production, and have natural advantages over boilers burning coal, gas, and oil fuels in terms of pollutant emissions: zero emissions of carbon dioxide (plant growth and combustion emit equal carbon dioxide ), ultra-low sulfur dioxide (zero) emissions. With the improvement of energy saving and emission reduction requirements in our country, large-scale factories and enterprises have increased the demand for biomass boilers, and also put forward new requirements for the thermal efficiency and exhaust gas emission of biomass boilers. However, there is still a big technical problem in the existing biomass boilers, the nitrogen oxide emission is usually 300mg / m 3 ~600mg / m 3 , NOx X From the perspective of pollution, it i...

Claims

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Application Information

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IPC IPC(8): F22B21/08F23B30/08F23K3/00F23L15/00
CPCY02E20/34
Inventor 耿生斌郭平罗志明张朝阳张茂勇邹富豪
Owner 迪森(常州)能源装备有限公司
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