Soot blowing method for high-temperature reheater of coal-fired boiler

A coal-fired boiler and reheater technology, applied in the field of soot blowing, can solve the problems of difficulty in guaranteeing accuracy, affecting the soot blowing effect, etc., and achieve the effect of good soot blowing effect and accurate and reliable soot deposition degree coefficient

Active Publication Date: 2018-07-13
HUANENG POWER INTERNATIONAL +1
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Before the soot blowing of the high temperature reheater, it is necessary to judge the soot blowing degree of the high temperature reheater. At present, the judgment of the soot accumulation degree of the high temperature reheater mainly includes the discrimination method based on the fuzzy neural network and the artificial experience discrimination method, but the actual During operation, due to changes in working conditions and coal quality, it will be difficult to guarantee the accuracy of the above method for judging the degree of ash deposition in high temperature reheaters, thus affecting the effect of soot blowing

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
  • Soot blowing method for high-temperature reheater of coal-fired boiler
  • Soot blowing method for high-temperature reheater of coal-fired boiler
  • Soot blowing method for high-temperature reheater of coal-fired boiler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] Through the combination of thermodynamic mechanism analysis and production data mining, it is determined that under steady-state conditions, the smaller the steam temperature difference between the inlet and outlet of the high-temperature reheater, the higher the degree of ash deposition in the high-temperature reheater. The larger the steam temperature difference between the inlet and outlet of the high temperature reheater, the higher the cleanliness of the high temperature reheater. The specific thermodynamic mechanism analysis and production data mining process are as follows:

[0029] A(1): From the perspective of boiler combustion, use correlation and regression analysis methods to quantify the relationship between load and boiler combustion parameters such as boiler coal feed rate, boiler feed water flow rate, total furnace air volume and reheat steam pressure, etc., and determine The unary linear relationship between the load and the above-mentioned other quanti...

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 soot blowing method for a high-temperature reheater of a coal-fired boiler. The method comprises the following steps: (1) acquiring the temperature difference of steam at the inlet and the outlet of the high-temperature reheater; (2) acquiring a soot accumulation degree coefficient according to the temperature difference of the steam at the inlet and the outlet of the high-temperature reheater; and (3) when the soot accumulation degree coefficient is higher than a start threshold value, starting soot blowing until the soot accumulation degree coefficient is reduced below the start threshold value. Compared with the prior art, the method provided by the invention realizes that the soot accumulation degree coefficient can accurately reflect the soot accumulation degree of the high-temperature reheater so that accurate and reliable soot blowing can be implemented and a good soot blowing effect is achieved.

Description

technical field [0001] The invention relates to a soot blowing method, in particular to a soot blowing method for a high temperature reheater of a coal-fired boiler. Background technique [0002] Before the soot blowing of the high temperature reheater, it is necessary to judge the soot blowing degree of the high temperature reheater. At present, the judgment of the soot accumulation degree of the high temperature reheater mainly includes the discrimination method based on the fuzzy neural network and the artificial experience discrimination method, but the actual During operation, due to changes in working conditions and coal quality, it is difficult to guarantee the accuracy of the above method for judging the degree of ash deposition in high temperature reheaters, thus affecting the effect of soot blowing. Contents of the invention [0003] The object of the present invention is to provide a soot-blowing method for a high-temperature reheater of a coal-fired boiler in o...

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): F23J3/02
CPCF23J3/02
Inventor 杨清生陈纲钱虹呼万肖宋祖彪陈琪琪王家辉
Owner HUANENG POWER INTERNATIONAL
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