Supercharge Your Innovation With Domain-Expert AI Agents!

Split arranging method for new three area burner of tangential circle combustion boiler

An arrangement method and a tangential combustion technology, which are applied in the combustion method, burners for burning powder fuel, burners, etc., can solve the problem that the influence of pulverized coal gas flow burnout is large, the development of fuel grading and low NOx combustion technology is limited, and denitration cannot be taken into account. effect and combustion efficiency, and achieve the effect of improving the phenomenon of uneven flame temperature distribution and reducing NOx emissions.

Inactive Publication Date: 2009-06-24
XIAN THERMAL POWER RES INST CO LTD
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing fuel staged combustion technology cannot do this, and it is helpless to use about 15% of the fuel volume as the reburning fuel; at the same time, the reburning zone is separated from the main combustion zone by a certain distance, and it is arranged on the top of the burner to face the coal. The burnout effect of the powder flow is very large
As a result, the fuel staged low NOx combustion technology cannot take into account the denitrification effect and combustion efficiency at the same time, which has become a fatal flaw in its development and seriously limits the development of fuel staged low NOx combustion technology

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
  • Split arranging method for new three area burner of tangential circle combustion boiler
  • Split arranging method for new three area burner of tangential circle combustion boiler
  • Split arranging method for new three area burner of tangential circle combustion boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Referring to Fig. 3, the present embodiment has 5 layers of primary air nozzles (represented by numeral 1), 3 layers of secondary air nozzles (represented by numeral 2), 2 layers of top burn-off air nozzles (represented by numeral 3), and 2 layers of The body burns out the air nozzle (represented by numeral 4). Among them, the primary air nozzle, the secondary air nozzle and the top burn-off air nozzle are arranged at the existing positions at the four corners of the furnace, called the main burner, and the arrangement method from bottom to top is 2 / 1 / 2 / 1 / 2 / 1 / 1 / 1 / 3 / 3, the split overburning air nozzle is arranged somewhere in the middle of the horizontal direction of the 4 walls of the furnace wall ( figure 2 4 and 4 in Figure 3), called the auxiliary burner. Among them, the 5-layer burner nozzle (2 / 1 / 2 / 1 / 2) in the lower part of the main burner constitutes a stable combustion zone; the 3-layer primary air nozzle (1 / 1 / 1) and the 2-layer auxiliary burner in the middle o...

Embodiment 2

[0045] Referring to Fig. 4, the present embodiment has 5 layers of primary air nozzles (represented by number 1), 3 layers of secondary air nozzles (represented by number 2), 2 layers of top burn-off air nozzles (represented by number 3), and 2 layers of sub-air nozzles. The body burns out the air nozzle (represented by numeral 4). Among them, the primary air nozzle, the secondary air nozzle and the top burn-off air nozzle are arranged at the existing positions of the four corners of the furnace, which are called the main burner, and the arrangement method from bottom to top is 2 / 1 / 2 / 1 / 1 / 2 / 1 / 1 / 3 / 3, the split overburning air nozzle 4 is arranged somewhere in the middle of the furnace wall in the horizontal direction ( figure 2 4 and 4 in Figure 4), called the auxiliary burner. Among them, the 4 layers of burner nozzles (2 / 1 / 2 / 1) in the lower part of the main body burner form a stable combustion zone; the 3 layers of primary air nozzles and the 1 layer of secondary air nozzle...

Embodiment 3

[0047] Referring to Fig. 5, the present embodiment has 6 layers of primary air nozzles (represented by numeral 1), 3 layers of secondary air nozzles (represented by numeral 2), 2 layers of top burn-off air nozzles (represented by numeral 3), and 3 layers of sub-air nozzles. The body burns out the air nozzle (represented by numeral 4). Among them, the primary air nozzle, the secondary air nozzle and the top burn-off air nozzle are arranged at the existing positions at the four corners of the furnace, called the main burner, and the arrangement method from bottom to top is 2 / 1 / 2 / 1 / 2 / 1 / 1 / 1 / 1 / 3 / 3, the split burn-off air nozzle is arranged somewhere in the middle of the horizontal direction of the 4 walls of the furnace wall ( figure 2 4 and 4 in Figure 5), called the auxiliary burner. Among them, the 5-layer burner nozzle (2 / 1 / 2 / 1 / 2) in the lower part of the main burner constitutes a stable combustion zone; the 4-layer primary air nozzle (1 / 1 / 1 / 1) and the 3-layer auxiliary The...

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 discloses tangential firing boiler new three zones burner split arrangement type. The includes the following steps: dividing combustion process into three zones that stable combustion zone, combustion and reducing zone, and full combustion zone by gas coal type arrangement plus once wind centralizing arrangement plus fission OFA plus top OFA arrangement type; complementing combustion air in time by fission OFA arrangement; the deep hypoxia cryogenic combustion of the initial stage coal dust air flow and the deep fuel of the combustion and reducing zone are fractional combustion. This successfully solves the abuse that the current low NOx combustion technique denitrifying effect is bad. Secondary burn-out wind complementing type can greatly reduce the influence of the new three zones burner fission arrangement type on the combustion efficiency. Thus this can successfully solves the problem of taking account of the current NOx combustion technique and the combustion efficiency at the same time. It is the burner arrangement type with better denitrifying effect.

Description

technical field [0001] The invention relates to a boiler combustion system, in particular to a split arrangement method for a new three-zone burner of a tangential combustion boiler. Background technique [0002] Almost all coal-fired boilers in power stations in my country have adopted low-NOx air staged combustion technology, but the application effect is not ideal. Among them, the NOx emissions of high-volatile coal-fired boilers can basically be controlled at 650mg / m 3 Around or lower, the NOx emission of low volatile coal-fired boilers is basically still at 1000mg / m 3 around or higher. From a technical point of view, this is related to the existing technical measures of low NOx air staged combustion technology. The existing technical measures fail to effectively control the excess air ratio at the initial stage of combustion, thus restricting the denitrification effect of the low NOx air staged combustion technology. On the other hand, deepening the air classificatio...

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 Patents(China)
IPC IPC(8): F23C5/32F23D1/02
Inventor 王春昌王月明蒋敏华
Owner XIAN THERMAL POWER RES INST CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com