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Real-time forecasting method for hydrogenolysis degree in hydrofining and system thereof

A hydrorefining and real-time prediction technology, applied in general control systems, control/regulation systems, test/monitoring control systems, etc., can solve problems such as insufficient desulfurization, excessive S content in hydrocracking end products, complex structures, etc., to achieve Reduce the probability of calculation non-convergence, ensure catalyst activity, and ensure the effect of qualified S content

Active Publication Date: 2017-06-20
CENT SOUTH UNIV
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Problems solved by technology

However, the structure of sulfide and nitrogen in the organic state in the reaction oil is complex, and it is difficult to detect on-line, and the results of off-line assay often have a large lag, which will lead to the operation status of the hydrofinishing reactor, that is, The desulfurization (nitrogen) effect is insufficient or excessive, which leads to excessive S content in the end product of hydrocracking, or organic nitrogen poisoning of the catalyst in the cracking process, or rapid aging of the catalyst due to high temperature in the refining process, which ultimately affects the service life of the catalyst. Reduce the overall economic benefits of refining and chemical enterprises

Method used

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  • Real-time forecasting method for hydrogenolysis degree in hydrofining and system thereof
  • Real-time forecasting method for hydrogenolysis degree in hydrofining and system thereof
  • Real-time forecasting method for hydrogenolysis degree in hydrofining and system thereof

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Embodiment 1

[0069] The method for real-time prediction of the degree of hydrogenolysis of sulfur and / or nitrogen-containing compounds in the hydrorefining process provided by this example, such as figure 1 shown, including:

[0070] 1) Preprocessing the historical data of the hydrorefining unit using a threshold denoising method;

[0071] 2) Screen the preprocessed process data using the double variance steady-state discriminant method, divide the selected steady-state data into several historical operating time domains according to the catalyst activity of the reaction system of the hydrocracking process, and obtain the uncorrelated Z A data set containing information on catalyst activity, feed properties, operating conditions, and hydrogen sulfide content and Z data sets containing information on catalyst activity, feed properties, operating conditions, and ammonia content;

[0072] 3) According to the hydrogen sulfide content and ammonia content of the whole hydrocracking process, the...

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Abstract

The invention provides a real-time forecasting method for a hydrogenolysis degree of a sulfur and / or nitrogen-containing compound in a hydrofining process and a system thereof. The method comprises the step of utilizing an extreme learning machine ELM model to forecast the hydrogenolysis degree of the sulfur and / or nitrogen-containing compound in real time on the basis of the existing operation condition of the process. According to the method provided by the invention, the ELM is utilized to forecast the hydrogenolysis degree of the sulfur and / or nitrogen-containing compound in the hydrofining process in real time according to the online detectable process variable of a hydrocracking flow and the important state information is supplied for the running optimization of a refining reactor of the hydrocracking flow.

Description

technical field [0001] The invention relates to the technical field of processing process prediction, and more specifically, to a method and system for real-time prediction of hydrogenolysis degree in hydrofining. Background technique [0002] Petroleum industry is one of the pillars of my country's national economy. With the development of the economy, the scale of refineries has been continuously expanded, and the equipment has been enlarged and the degree of automation has been continuously improved, which has gradually increased the development of non-renewable resources such as crude oil, eventually causing shortage of raw materials for production. Therefore, the secondary processing technology that can process low-quality oil and heavy oil containing sulfur or high sulfur, produce high-quality transportation fuel, and flexibly adjust product distribution under the premise of ensuring product yield has become the focus of attention of various refining and chemical enterp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00C10G45/72G05B23/02
CPCC10G45/72C10G2300/202G05B23/024G16C20/30G16C20/70
Inventor 王雅琳陈冠余薛永飞孙备袁小锋阳春华
Owner CENT SOUTH UNIV
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