Efficient coal dust combustor for reducing smoke NOx content

A burner and content technology, applied in the direction of burners, burners burning powder fuel, combustion methods, etc., can solve the problems of inapplicability to small and medium-sized pulverized coal boilers

Inactive Publication Date: 2012-09-19
SHANXI LANTIAN ENVIRONMENTAL PROTECTION EQUIPCO
View PDF9 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing graded air supply pulverized coal burner is not suitable for small and medium-si...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Efficient coal dust combustor for reducing smoke NOx content
  • Efficient coal dust combustor for reducing smoke NOx content
  • Efficient coal dust combustor for reducing smoke NOx content

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017]The high-efficiency pulverized coal burner for reducing the NOx content of flue gas includes a primary air duct 1; the inner cavity of the primary air duct 1 forms a primary air channel 2; the outer coaxial sleeve of the primary air duct 1 is provided with an air mixing sleeve 3; the air mixing sleeve The inlet end of the tube 3 is connected with the mixed air inlet pipe 4; the outlet end of the mixed air sleeve 3 is provided with a mixed air expansion section 5; the inner wall of the mixed air sleeve 3 and the outer wall of the primary air pipe 1 jointly form an annular mixed air chamber 6 The outer coaxial sleeve of the air mixing sleeve 3 is provided with an inner secondary air sleeve 7; the inlet end of the inner secondary air sleeve 7 is connected with an inner secondary air inlet pipe 8; the outlet of the inner secondary air sleeve 7 The end is provided with an inner secondary air expansion section 9; the inner wall of the inner secondary air sleeve 7 and the outer ...

Embodiment 2

[0022] The high-efficiency pulverized coal burner for reducing the NOx content of flue gas includes a primary air duct 1; the inner cavity of the primary air duct 1 forms a primary air channel 2; the outer coaxial sleeve of the primary air duct 1 is provided with an air mixing sleeve 3; the air mixing sleeve The inlet end of the tube 3 is connected with the mixed air inlet pipe 4; the outlet end of the mixed air sleeve 3 is provided with a mixed air expansion section 5; the inner wall of the mixed air sleeve 3 and the outer wall of the primary air pipe 1 jointly form an annular mixed air chamber 6 The outer coaxial sleeve of the air mixing sleeve 3 is provided with an inner secondary air sleeve 7; the inlet end of the inner secondary air sleeve 7 is connected with an inner secondary air inlet pipe 8; the outlet of the inner secondary air sleeve 7 The end is provided with an inner secondary air expansion section 9; the inner wall of the inner secondary air sleeve 7 and the outer...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to coal dust combustion technology and particularly relates to an efficient coal dust combustor for reducing smoke NOx content. The invention solves the problem that the existing grading air supply coal dust combustor cannot be applied to small and medium coal dust boilers. The efficient coal dust combustor comprises a primary air pipe, wherein an inner cavity of the primary air pipe forms a primary air channel; the outer side of the primary air pipe is coaxially sleeved with an air mixing sleeve; the inlet end of the air mixing sleeve is communicated with an air mixing inlet pipe; the air outlet end of the air mixing sleeve is provided with an air mixing expansion section; the inner wall of the air mixing sleeve and the outer wall of the primary air pipe jointly encircle an annular air mixing channel; the outer side of the air mixing sleeve is coaxially sleeved with an inner secondary air sleeve; and the inlet end of the inner secondary air inlet is communicated with an inner secondary air inlet pipe. Based on a brand-new structure, the efficient coal dust combustor disclosed by the invention effectively solves the problem that the existing grading air supply coal dust combustor cannot be applied to the small and medium coal dust boilers; in addition, the efficient coal dust combustor can be applied to the small and medium coal dust boilers.

Description

technical field [0001] The invention relates to pulverized coal combustion technology, in particular to a pulverized coal high-efficiency burner for reducing the NOx content of flue gas. Background technique [0002] With the development of pulverized coal combustion technology and the increase of environmental protection pressure, while ensuring the full combustion of pulverized coal, suppressing the formation of NOx has become a technical problem that must be solved in the pulverized coal combustion process. In order to suppress the generation of NOx, the method of graded air supply is mainly adopted at present. The principle of staged air supply is to inject the combustion-supporting air into the combustion space in the form of multiple streams, causing the pulverized coal to be in an oxygen-deficient state and lower flame temperature in the first combustion zone, so as to control the amount of NOx generated, while the rest of the combustion-supporting air The wind is mi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F23D1/02
Inventor 王欢王民发郎凤娥郎鹏德张宗旺杜铭华赵红卫
Owner SHANXI LANTIAN ENVIRONMENTAL PROTECTION EQUIPCO
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap