Composite concentration triple-wind-regulating low-NOx cyclone pulverized-coal burner

A pulverized coal burner and air conditioning technology, which is applied to the burner, burner, and combustion method of burning powder fuel, and can solve the problems that have not been well solved, low-load stable combustion capability, and low NOX emissions.

Active Publication Date: 2011-05-18
XI AN JIAOTONG UNIV
View PDF6 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, the adaptability of existing swirl burners to coal types, low-load stable combustion capability, and low NO X Emissions and other aspects are still not well resolved

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
  • Composite concentration triple-wind-regulating low-NOx cyclone pulverized-coal burner
  • Composite concentration triple-wind-regulating low-NOx cyclone pulverized-coal burner
  • Composite concentration triple-wind-regulating low-NOx cyclone pulverized-coal burner

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] see figure 1 , a compound shade three-adjustment air low NO X Swirl pulverized coal burner, including oil gun 1, on the outside of oil gun 1, there are central air channel 2, primary air channel 10, internal direct current secondary air channel 11, and internal swirl secondary air channel 12 concentrically arranged in sequence from inside to outside 1. Outer swirling flow secondary air channel 13, wear-resistant ring 3, conical pulverized coal concentrating device 5 and star pulverized coal concentrating device 7 are concentrically arranged in the primary air channel 10 along the direction of primary air flow, and internal swirling flow two The entrance of the secondary air channel 12 is provided with an internal direct current secondary air regulating baffle 4, and the internal swirl secondary air channel 12 is provided with an internal swirl seconda...

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 a composite concentration triple-wind-regulating low-NOx cyclone pulverized-coal burner which comprises a central wind passage, wherein a primary wind passage, an internal direct-flow secondary wind passage, an internal rotational-flow secondary wind passage and an external rotational-flow secondary wind passage are sequentially and concentrically arranged at the outer side of the central wind passage from inside to outside, a conical pulverized-coal concentrating device and a star-shaped pulverized-coal concentrating device are arranged in the primary wind passage, and a reversed V-shaped expanded opening and a zigzag axial and radial double concave-convex structured burning-stabilizing device are arranged at the outlet of the primary wind passage; and after primary wind passes through the pulverized-coal concentrating device, an intense standing-vortex burning-stabilizing firing area with obvious circumferential and radial pulverized-coal concentration distribution is formed at the outlet of the burner, and the burning conditions of high-temperature reflow smoke gas and oxygen-deficient rich fuel are generated. The burner has extremely strong firing-stabilizing performance and good coal adaptability and effectively reduces the concentration of nitrogen oxides.

Description

technical field [0001] The invention belongs to a pulverized coal burner, in particular to a three-adjustment air-low NO burner with a compound concentration distribution of pulverized coal at the outlet of the burner along the circumferential direction and the radial direction. X Swirl pulverized coal burner. Background technique [0002] After the emergence of advanced combustion technologies such as pulverized coal concentration technology and graded combustion technology, the swirl burner can not only organize a well-organized aerodynamic field in the furnace, but also produce a reasonable concentration distribution of pulverized coal flow in the ignition area, residence time of pulverized coal particles and ignition distance, Ensure stable combustion, and can greatly reduce NO X emission. At the same time, the combustion of the swirl burner is relatively independent, the arrangement and adjustment are relatively flexible, and the deviation of the flue gas temperature ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/02
CPCY02E20/34
Inventor 赵钦新王云刚吉用锋苟远波鲍颖群成丁南
Owner XI AN JIAOTONG UNIV
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