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Prediction method and prediction system of nitrogen oxide concentration in coking flue gas

A technology of nitrogen oxides and prediction methods, applied in prediction, neural learning methods, physical realization, etc., can solve problems such as many uncertain factors, poor effects, and inability to perform quantitative calculations

Active Publication Date: 2019-11-15
INST OF AUTOMATION CHINESE ACAD OF SCI
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Problems solved by technology

[0003] However, for nitrogen oxides, because the formation mechanism is too complicated and there are many uncertain factors, quantitative calculations cannot be performed. If only numerical simulation is used for prediction, the effect is very poor

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  • Prediction method and prediction system of nitrogen oxide concentration in coking flue gas
  • Prediction method and prediction system of nitrogen oxide concentration in coking flue gas
  • Prediction method and prediction system of nitrogen oxide concentration in coking flue gas

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Embodiment Construction

[0037] Preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention, and are not intended to limit the protection scope of the present invention.

[0038] The embodiments of the present invention can be applied to coking plants, which include induced draft fans, waste heat recovery boilers, booster fans, desulfurization towers, denitrification towers, ammonium sulfate circulation tanks, solid-liquid separators, urea dissolution tanks, pipelines and auxiliary pumps and other related equipment , process parameter detection device, process parameter adjustment device, DCS system (Distributed Control System, distributed control system or distributed control system, is a computer control system), etc.

[0039] In order to improve the accuracy of predicting the concentration of nitrogen oxides,...

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Abstract

The invention relates to a method and system for predicting the concentration of nitrogen oxides in coking flue gas. Among them, the prediction method includes: establishing a three-dimensional physical model of the combustion chamber, carbonization chamber and flue in the coke oven; setting the fuel and its related initial conditions and boundary conditions in the three-dimensional physical model; based on the initial conditions and boundary conditions, and Using gas dynamics and combustion methods, carry out numerical simulation, establish temperature field and airflow field; based on temperature field and airflow field, according to nitric oxide generation rate, determine the concentration of nitrogen oxides. This technical solution solves the problem of low accuracy caused by the traditional method of material conservation or pure data-driven prediction; it improves the accuracy of the prediction of nitrogen oxide concentration, is easy to operate, saves time and effort, and helps the staff Improving the process conditions of production is very helpful for operators, whether it is analyzing the process system or conducting theoretical research.

Description

technical field [0001] The invention relates to the technical field of coking industrial waste gas treatment, in particular to a method and system for predicting the concentration of nitrogen oxides in coking flue gas. Background technique [0002] my country is the largest coking producer in the world. The "Emission Standards for Chemical Pollutants in Coking" which came into effect on January 1, 2015 put forward strict and clear quantitative requirements for the emission indicators of nitrogen oxides in the coking industry. On the one hand, various coking plants have improved their technologies one after another, striving to reduce the concentration of relevant pollutants in the exhaust gas to below the standard; on the other hand, coking plants with conditions have spent a lot of money on desulfurization and destocking equipment, hoping to achieve good flue gas treatment effects. In this case, the prediction of the concentration of nitrogen oxides in the exhaust gas is ve...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06N3/063G06N3/08G06Q10/04
CPCG06N3/08G06Q10/04G06F30/367G06F2119/06G06N3/065
Inventor 王学雷李亚宁谭杰
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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