Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Center backdraft type low-nitrogen transformation scheme

A kind of scheme, hollow technology, applied in the field of low-nitrogen retrofit scheme of center back-burning type, can solve the problems of boiler thermal efficiency decline, high exhaust gas temperature, high exhaust gas temperature, etc., to improve heat utilization rate, meet emission requirements, improve The effect of the use of heat

Pending Publication Date: 2021-04-20
罗诺克兹(北京)能源设备技术有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing premixed surface combustion burner encountered many problems during the low-nitrogen retrofitting process of the central backfiring boiler, such as high CO content in the flue gas, often reaching thousands of ppm, high exhaust gas temperature, and low boiler thermal efficiency. Severe decline, even serious accidents of flashback and deflagration
[0003] Flue gas recirculation technology also faces the problems of high CO and high exhaust gas temperature in the transformation process of central back-fired boilers

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
  • Center backdraft type low-nitrogen transformation scheme
  • Center backdraft type low-nitrogen transformation scheme
  • Center backdraft type low-nitrogen transformation scheme

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] see image 3 , center backfiring type low-nitrogen transformation plan, place the burner 2 in the normal pressure boiler, the cold water pipe outlet 3 above the burner 2 is connected with the softened water tank of the normal pressure boiler, and a hole is opened in the middle of the bottom of the softened water tank, and The return water of the water-cooling pipe is connected to 4 to form a cycle. The water-cooling pipe absorbs the heat in the combustion chamber to preheat the return water of the boiler to improve the thermal efficiency of the system;

Embodiment 2

[0026] see Figure 4 , center backfiring type low-nitrogen transformation plan, place the burner 2 in the pressure boiler, the water-cooled pipe return water 4 above the burner 2 is connected to the pipe on the lower side of the softened water tank, the pipe is connected to the top of the pressure boiler, and the middle of the pipe Connected to the water outlet 3 of the water-cooled pipe to form a cycle, the water-cooled pipe absorbs the heat in the combustion chamber to preheat the boiler return water to improve the thermal efficiency of the system;

Embodiment 3

[0028] see Figure 5 , center backfiring type low-nitrogen transformation plan, place the burner 2 in the steam boiler, the water outlet 3 above the burner 2 supplies water to the supplementary water tank, and the left side of the bottom of the supplementary water tank is connected to the top of the steam boiler through pipes. The middle is connected with the return water 4 of the water-cooled pipe to form a cycle. The water-cooled pipe absorbs the heat in the combustion chamber to preheat the return water of the boiler to improve the thermal efficiency of the system.

[0029] Working principle: Central backfire type low-nitrogen transformation scheme. Boiler 1 provides low-nitrogen combustion space and performs heat exchange. Gas burns through burner 2 to provide heat for the system. Water-cooled pipe 5 cools down burner 3 to prevent components from overheating and damage. Because the combustion zone avoids the turbulent area of ​​the flow field in the combustion chamber, 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 a center backdraft type low-nitrogen transformation scheme. A boiler is included, a combustor is arranged on the left side of the boiler, a water-cooled tube water output part is formed above the combustor, a water-cooled tube water return part is arranged below the combustor, a water-cooled tube is additionally arranged on the combustor and located in a boiler combustion chamber, and the water-cooled tube water output part and the water-cooled tube water return part are connected with the water-cooled tube. A combustion area of the combustor penetrates through the water-cooled tube, the water-cooled tube is of a hollow sleeve tube structure, no combustion area exists in the hollow portion, the combustor is fixed to the left end of the boiler through a bolt and connected with an external power source and gas, and a water tube surrounds the interior of the water-cooled tube. Heat is used through the water-cooled tube, investment is small, stable NOx emission can be guaranteed, the existing emission requirement is met, meanwhile, due to the fact that the combustion area avoids the disordered area of the flow field in the combustion chamber, CO emission is almost zero, the combustion efficiency is improved, and environmental pollution is reduced; and the center backdraft type low-nitrogen transformation scheme has the advantages that the combustion efficiency is improved, environmental pollution is low, and the heat efficiency is high.

Description

technical field [0001] The technical field of the low-nitrogen modification scheme of the present invention, specifically relates to a center-back burning low-nitrogen transformation scheme. Background technique [0002] The existing premixed surface combustion burner encountered many problems during the low-nitrogen retrofitting process of the central backfiring boiler, such as high CO content in the flue gas, often reaching thousands of ppm, high exhaust gas temperature, and low boiler thermal efficiency. Severe decline, and even serious accidents of flashback and deflagration. [0003] Flue gas recirculation technology also faces the problems of high CO and high exhaust gas temperature in the transformation process of central back-fired boilers. [0004] The present invention adds a set of water-cooled pipe system to the blind area of ​​the combustion head of the original burner (publication number 205878162U). The functions of this set of water-cooled pipe system are 1....

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): F22B31/00F24H9/18F23D14/78
Inventor 牟从莹孙源王刚
Owner 罗诺克兹(北京)能源设备技术有限公司
Features
  • Generate Ideas
  • 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