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Method for detecting carbon content of boiler slag

A detection method, boiler slag technology, applied in the detection field, can solve problems such as the impact of shooting environment, and achieve the effect of low acquisition conditions, less time consumption and high efficiency

Active Publication Date: 2018-03-30
XI AN JIAOTONG UNIV
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Problems solved by technology

Based on the image binarization detection method, the grayscale image is converted into a binarized image by selecting an appropriate threshold, and the proportion of incompletely burned carbon (black pixels) in the total pixels is counted to measure the carbon content. The binarization threshold There is a certain degree of subjectivity and blindness in the selection, and it is also affected by the shooting environment

Method used

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  • Method for detecting carbon content of boiler slag
  • Method for detecting carbon content of boiler slag
  • Method for detecting carbon content of boiler slag

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Embodiment

[0029] see figure 1 , figure 2 and image 3 , the present invention comprises the following steps:

[0030] 1) Randomly sample the slag after different combustion states. It is better to have a large number of samples to calculate the carbon content. It is required that the carbon content of these samples change evenly. Among them, the detection method of the carbon content of the slag sample is obtained by the accurate and reliable ignition weight loss method commonly used at present, referring to the relevant regulations of DL / T 567.6-1995 "Determination of fly ash and slag combustibles".

[0031] 2) Imaging the slag sample and the reference object to obtain the information entropy difference between the two, including the following steps:

[0032] 2.1) If figure 2 As shown, after building the imaging device, place any piece of flat and clean white paper with diffuse reflection characteristics in the imaging range as a reference object, and adjust the aperture or expos...

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Abstract

The invention discloses a method for detecting the carbon content of boil slag. An information entropy difference between a slag image and a reference image is used to reflect the change of the carboncontent of the slag, and a change rule between the information entropy difference and the carbon content of the slag is obtained. The accurate carbon content of the slag can be obtained convenientlythrough the image information entropy difference. The technology does not need burning of slag samples in a laboratory environment, weighing of a weight loss and other complicated operations, does notneed to rely on other complex technologies, such as microwave carbon measurement, and is low in acquisition condition of slag images, and not sensitive to a shooting environment. The technology can quickly realize the detection of the carbon content of the slag, and has the advantage of less time consumption and high efficiency; and compared with a carbon content result measured by a burning weight loss method, the detection average error is 2% or less, and the accuracy meets a current detection requirement.

Description

technical field [0001] The invention belongs to the detection field, and in particular relates to a method for detecting carbon content in boiler slag. Background technique [0002] Among all kinds of special equipment, industrial boilers are the most common energy-consuming equipment in production and life, and consume about one-third of the country's raw coal production. It is an important way to achieve sustainable development to carry out boiler energy efficiency testing and promote enterprises to improve energy conservation, emission reduction and efficiency enhancement. Among them, the carbon content of the slag is an important indicator reflecting the incomplete combustion heat loss of the boiler bottom slag. If the real-time monitoring of the carbon content of the slag can be realized, it will help to grasp the combustion conditions of the boiler in real time and make corresponding adjustments. It lays the foundation for the further realization of automatic control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/17
CPCG01N21/17G01N2021/1765
Inventor 王昭邢超赵亚琳高建民
Owner XI AN JIAOTONG UNIV
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