Method for detecting coal property characteristics

A detection method and characteristic technology, which is applied in the detection field of coal quality characteristics, can solve the problems of boiler combustion instability, fire extinguishing, and great difference in ignition stability.

Active Publication Date: 2013-08-07
STATE GRID CORP OF CHINA +1
View PDF6 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the practice of boiler operation, it often happens that the volatile content of coal-fired coal meets or approaches the set value while the boiler burns unstable or even goes out, which requires a more comprehensive index to judge the ig

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
  • Method for detecting coal property characteristics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The specific scheme of the present invention will be described in detail below:

[0033] The invention provides a new method for comprehensively judging the fire stability of coal based on the industrial analysis of coal. The industrial analysis of coal includes items such as total moisture, air-dry basis moisture, air-dry basis ash, dry ash-free basis volatile matter (or air-dry basis volatile matter), air-dry basis fixed carbon, received basis low calorific value and other items. All coal quality analysis laboratories can complete these tests. On the basis of these data, the volatile content, fixed carbon and ash content of the received base can be obtained through conversion. The received base volatile matter, received base ash content, received base fixed carbon and received base moisture (ie total moisture) are all the components of coal, and the sum of their values ​​is 100. Therefore, the calorific value of coal is the sum of the calorific value of the above four ...

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 provides a method for detecting coal property characteristics. The method comprises the following steps of: 1, performing industrial measurement on fire coal, thus obtaining as received basis moisture, air dry basis moisture, air dry basis fixed carbon, air dry basis ash content, air dry basis volatile component and as received basis lower heating value; 2, calculating as received basis fixed carbon, as received basis ash content and as received basis volatile component of the fire coal; 3, calculating as received basis fixed carbon heating value; 4, calculating as received basis volatile component heating value; 5, calculating the ratio of the as received basis fixed carbon heating value to the as received basis volatile component heating value, and recording the ratio as Kq; and 6, comparing the size of the Kq, wherein the larger the Kq is, the lower the combustion stability is. The heating value of the volatile component can be calculated according to the fixed carbon content and the lower heating value obtained through analysis, the ratio Kq of the fixed carbon heating value to the volatile component heating value is obtained, the ratio serves as the index of judging the combustion stability of the fire coal, and the combustion stability conditions of different coal types can be compared.

Description

Technical field [0001] The invention specifically discloses a method for detecting coal quality characteristics, and particularly relates to a method for detecting the fire stability of coal quality. Background technique [0002] In the production process of power, energy, building materials, metallurgy and other industries, it is often necessary to use pulverized coal to burn in a boiler to heat water to generate steam to meet the requirements of the production process. The safe and stable combustion of pulverized coal is an important guarantee for the continuous and reliable operation of the boiler. In order to make the coal quality meet the needs of stable combustion, it is usually required that the volatile content of the coal entering the furnace is not lower than a certain value, otherwise it will lead to unstable combustion and abnormal situations such as boiler fire extinguishing. [0003] At present, volatile matter content is widely used in the coal-fired control of boil...

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): G01N33/22
Inventor 杨兴森郝卫东胡志宏王海超
Owner STATE GRID CORP OF CHINA
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