A dynamic evaluation method for energy efficiency of ethylene production based on operating conditions

A technology for dynamic evaluation and production energy efficiency, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of complex ethylene production process, insignificant production guidance, and no consideration of ethylene production and operation.

Active Publication Date: 2018-01-26
DALIAN UNIV OF TECH
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AI Technical Summary

Problems solved by technology

The above-mentioned algorithm methods do not take into account the actual production and operation of ethylene. Because the ethylene production process is complex and belongs to a complex process, there are many factors affecting its energy efficiency. It is not based on the evaluation and analysis from the perspective of production process, and its guidance for future production is not obvious.

Method used

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  • A dynamic evaluation method for energy efficiency of ethylene production based on operating conditions
  • A dynamic evaluation method for energy efficiency of ethylene production based on operating conditions
  • A dynamic evaluation method for energy efficiency of ethylene production based on operating conditions

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Embodiment Construction

[0047] 1) First determine the input and output data. There are many factors affecting the energy efficiency of the ethylene production process. In order to ensure the accuracy, objectivity and comprehensiveness of the energy efficiency analysis of the ethylene plant, the consumption of industrial water, circulating water, domestic water, desalinated water, instrument air, factory air, nitrogen, and fuel The quantity is used as input data, while the output data is defined as the main products ethylene and propylene.

[0048] 2) Verify the data consistency of the above data through the Grubbs criterion (Grubbs criterion), through the formula:

[0049]

[0050] Eliminate outliers in the data. then pass

[0051]

[0052] and

[0053]

[0054] Normalize and standardize the above data.

[0055] Among them, n is the number of data; α is the significance level, that is, the probability coefficient of committing the error of "abandoning the truth", which is taken as 0.01 h...

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Abstract

The invention belongs to the field of ethylene production energy efficiency evaluation, and relates to a dynamic evaluation method for ethylene production energy efficiency based on working conditions, which realizes the dynamic analysis of the comprehensive energy consumption per unit product in the ethylene production process. The present invention determines 24 typical working conditions by analyzing the external uncontrollable constraint conditions of ethylene production, uses support vector machine to classify ethylene production data into working conditions in real time, and then calculates the comprehensive energy consumption per unit of product and the benchmark value through the data envelopment analysis method, Display the energy efficiency level of ethylene production in real time and give the analysis results. The effect and benefit of the present invention are that it is possible to analyze the specific situation and influencing factors of energy consumption in the corresponding statistical period for different working conditions, thereby judging the "optimum operating parameters of the actually achievable working conditions", effectively improving the energy consumption due to lack of Insufficient energy efficiency analysis of ethylene production due to process analysis.

Description

technical field [0001] The invention relates to the technical field of ethylene production energy efficiency evaluation, and relates to a dynamic evaluation method for ethylene production energy efficiency based on working conditions. Background technique [0002] China is a big energy country, and its total geological reserves rank third in the world, but the per capita level is obviously insufficient. With the continuous development of my country's industrialization and urbanization, the energy demand of the entire national economy has become increasingly prominent, and the per capita energy consumption level has also increased sharply. However, in such a tense situation of energy utilization, the economic efficiency generated by energy consumption in the process of production and consumption is relatively low. Targeted solutions to China's energy supply and demand contradictions. There are three ways to solve this problem: first, open source, that is, increase energy su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F19/00
Inventor 邵诚巩师鑫朱理刘佳
Owner DALIAN UNIV OF TECH
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