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Energy-saving and environment-friendly combustion system of layer-burning boiler

An energy-saving and environmentally friendly combustion system technology, which is applied in the field of boiler combustion, can solve the problems of high nitrogen oxide content, difficulty in burning raw coal, and low combustion temperature, and achieve high temperature, beneficial waste heat recovery, and high combustion efficiency.

Inactive Publication Date: 2016-05-04
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In such a structure, the raw coal is burned on the grate, the combustion temperature is relatively low, the combustion time is short, the raw coal is difficult to burn completely, the combustion efficiency is low and the nitrogen oxide content in the flue gas is high, causing serious pollution to the environment

Method used

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  • Energy-saving and environment-friendly combustion system of layer-burning boiler
  • Energy-saving and environment-friendly combustion system of layer-burning boiler
  • Energy-saving and environment-friendly combustion system of layer-burning boiler

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The energy-saving and environment-friendly combustion system of the floor-fired boiler, such as figure 2 and image 3 As shown, it includes a furnace 1 , a combustion cylinder 17 , a fan coal mill 5 and a fuel delivery pipe 18 . At least one combustion tube 17 is provided on the side wall of the furnace 1 , and the combustion tube 17 is connected to the furnace 1 . An opening is set above the front part of the furnace 1 to connect with the first flue gas introduction pipe 7, and the first flue gas introduction pipe 7 is connected with the fan coal mill 5, and the fan coal mill 5 is connected with the raw coal input pipe 6 connection, the output port of the fan coal mill 5 is connected to the combustion cylinder 17 through the fuel delivery pipe 18 to provide fuel for the combustion cylinder. The bottom of the rear part of the furna...

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Abstract

The invention discloses an energy-saving and environment-friendly combustion system of a layer-burning boiler. The energy-saving and environment-friendly combustion system comprises a hearth, a combustion cylinder, a fan coal mill and a fuel conveying pipe, wherein at least one combustion cylinder is arranged on the side wall of the hearth, and the combustion cylinder connects and communicates with the hearth; an opening is formed in the upper part of the hearth and is connected with a first smoke inlet guide pipe; the first smoke inlet guide pipe is connected with the fan coal mill; the fan coal mill is connected with a raw coal input pipe; and the output opening of the fan coal mill is connected with the combustion cylinder through the fuel conveying pipe. The energy-saving and environment-friendly combustion system has the advantages that the low-oxygen combustion of coal powder can be facilitated, sufficient combustion can be ensured, and the highest heat value is released; the acceleration of coal powder combustion is facilitated, the burn-off rate is improved, and the recycling of residual heat is facilitated; and full coal powder combustion can be ensured, and at the same time, the emission of more than 40% of nitric oxide can be reduced.

Description

【Technical field】 [0001] The invention relates to the technical field of boiler combustion, in particular to an energy-saving and environment-friendly combustion system for a layer-fired boiler that improves combustion efficiency and effectively reduces nitrogen oxide emissions. 【Background technique】 [0002] Nitrogen oxides include various compounds such as nitrous oxide (N2O), nitrogen monoxide (NO), nitrogen dioxide (NO2), dinitrogen trioxide (N2O3), dinitrogen tetroxide (N2O4) and five Dinitrogen oxide (N2O5), etc. Except for nitrogen dioxide, other nitrogen oxides are extremely unstable, and turn into nitrogen dioxide and nitric oxide when exposed to light, humidity or heat, and nitrogen monoxide turns into nitrogen dioxide. Nitrogen oxides are toxic to varying degrees. [0003] Most of the NOx emitted by human activities comes from the combustion process of fossil fuels, such as the combustion process of automobiles, aircraft, internal combustion engines and industr...

Claims

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Application Information

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IPC IPC(8): F23C5/08F23C7/00F23K1/04
CPCF23C5/08F23C7/00F23K1/04F23K2201/20
Inventor 刘效洲王长宏胡艳鑫张宇刘文星
Owner GUANGDONG UNIV OF TECH
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