A data model-based optimization method for catalytic cracking unit

A catalytic cracking device and data model technology, applied in the direction of total factory control, electrical program control, and comprehensive factory control, can solve the problems of increasing invalid variables, difficult establishment, slow calculation speed, etc., and achieve high sample data density and guarantee Absolute convergence, avoiding the effect of sample skew

CN109814513BActive Publication Date: 2020-12-29SYSPETRO TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-12-29

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Abstract

The invention relates to a catalytic cracking device optimization method based on a data model, and provides a reaction device model established according to big production history data. The method does not depend on a complicated process mechanism, and the yield and key properties of a product can be accurately predicted. The variable correlation algorithm provided by the invention can intelligently screen out variables which are strongly correlated with target variables from massive DCS bit numbers and Lims variables, so that the model complexity is reduced to the minimum, and meanwhile thereliability is guaranteed. In addition, the multi-neural network integrated learning prediction model constructed by the invention is high in operation speed, high in convergence and wide in adaptability, and the proposed optimization method can quickly calculate a result on the premise of consuming few computing resources and can meet the real-time online optimization requirement of the device. An intelligent algorithm is adopted to determine the time delay effect of different process parameters, so that the calculation is more accurate.
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Description

technical field

[0001] The invention relates to the field of petrochemical production process control and optimization, in particular to a method for optimizing a catalytic cracking unit based on a data model. Background technique

[0002] Catalytic cracking is an important means of lightening heavy oil, the core device for gasoline and diesel production in refineries, and the main source of benefits for refineries. In recent years, crude oil has become heavier and inferior, the market demand for clean fuels and low-carbon olefins is increasing, the safety and environmental protection indicators are becoming more and more stringent, and the international competition for petrochemical products is becoming increasingly fierce. presented new challenges. Catalytic cracking is the most complex catalytic production device in the petroleum refining industry. It is very complicated to establish a process mechanism model for the entire device. Big data technology can directly mine l...

Examples

Embodiment

[0045] Example: such as figure 1 As shown, a data model-based catalytic cracking unit optimization method includes the following steps:

[0046] (1) Establish a production history database. Read the complete historical data of the DCS system and LIMS detection of the catalytic cracking unit for nearly a year, the production process parameter data is automatically recorded every 1 minute, and the device system outlet composition and product material property detection data are analyzed every 4 hours. Organize and merge the original data of DCS system and LIMS system, and establish a well-formatted database to ensure that the two types of data are easy to read in subsequent analysis.

[0047] (2) Data extraction and preprocessing. Perform descriptive statistical analysis on the collected DCS production process parameter data and LIMS material property detection data, analyze the distribution characteristics, types, and statistical significance of the data, and judge whether th...