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A method for predicting flowing temperature of coal ash

A technology of flowing temperature and coal ash, which is applied in the field of soft measurement to achieve the effects of high accuracy, improved analysis efficiency and fast analysis speed

Inactive Publication Date: 2015-03-11
DATANG INNER MONGOLIA DUOLUN COAL CHEM CO LTD
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Problems solved by technology

[0005] To sum up, there is currently no technology that can quickly and accurately predict the flow temperature of coal ash to meet the actual production needs of the Shell gasifier

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  • A method for predicting flowing temperature of coal ash
  • A method for predicting flowing temperature of coal ash
  • A method for predicting flowing temperature of coal ash

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Embodiment Construction

[0033] The present invention will be described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] According to an embodiment of the present invention, a method for predicting the flow temperature of coal ash is provided. refer to figure 1 , the method includes the following steps:

[0035] Step 1: Establish standard working curve of coal ash composition

[0036] Firstly, several coal ash standard samples with a certain gradient distribution of each element content are selected, and the content of each component in the coal ash is determined through repeated determination and calibration by chemical method, and these coal ash standard samples are pressed into standard samples.

[0037] Next, adjust the working conditions of the X-fluorescence spectrometer, use the X-fluorescence spectromet...

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Abstract

The present invention provides a method for predicting a flowing temperature of coal ashes. The method includes substituting component content of the coal ash to be detected into a coal ash flowing temperature predicting model, to obtain a predicting value of the flowing temperature of the coal ash to be detected, wherein the coal ash flowing temperature predicting model is constructed by the following steps: analyzing the coal ash composition and the coal ash flowing temperature of the coal entering the factory or the mixed coal, and building a sample point data set using the obtained multiple groups of analyzed data, wherein each group of analyzed data includes the coal ash composition content and the corresponding coal ash flowing temperature; based on the sample point data set, using the coal ash composition content as an independent variable, using the coal ash flowing temperature as a dependent variable, and establishing the coal ash flowing temperature predicting model using a method of partial least-squares regression. The method solves the boundedness of complex analysis procedures and long analysis periods of a conventional coal ash flowing temperature measuring method. In addition, the method overcomes the ill effect of the multiple correlations on system modeling, narrows errors in model predicting, and increases robustness of the model.

Description

technical field [0001] The invention relates to the technical field of soft sensing, in particular to a method for predicting the flow temperature of coal ash. Background technique [0002] The coal ash flow temperature is one of the important indicators for the temperature regulation and control of the Shell gasifier. The operating temperature of the Shell gasifier must exceed the coal ash flow temperature by 100-150°C, and the coal quality required to enter the furnace must be relatively stable. , The flow temperature of coal ash fluctuates within 100°C. If the furnace temperature is too high or too low, there will be phenomena such as slag screen and slag mouth blocking. In addition, the flow temperature of coal ash is directly related to the adjustment of the inlet temperature of SGC (synthesis gas cooler), which is an important factor affecting the increase of gasifier load. Therefore, it is of great significance for the long-term stable operation of the Shell gasifie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G01N23/223
Inventor 马继生高秀娟张志明丁志刚王昌盛姜新其廖家势李宁黄晓伟张美林
Owner DATANG INNER MONGOLIA DUOLUN COAL CHEM CO LTD
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