Energy-saving dechlorination process method and system for waste plastic cracking oil process

By deploying online analysis sensors at key nodes in the waste plastic pyrolysis oil and gas treatment system and combining multiple models for operating condition analysis, dual dechlorination mode recognition is achieved, solving the problems of low dechlorination efficiency and high energy consumption in existing technologies, and realizing energy-saving dechlorination in the waste plastic pyrolysis oil process.

CN122168320APending Publication Date: 2026-06-09SHANDONG YANKONG RENEWABLE RESOURCES TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANDONG YANKONG RENEWABLE RESOURCES TECHNOLOGY CO LTD
Filing Date
2026-03-31
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing technologies lack the ability to perceive and dynamically adjust changes in operating conditions during the dechlorination process of waste plastic pyrolysis oil, resulting in low dechlorination efficiency, high energy consumption, and inability to adapt to operating conditions.

Method used

Online analysis sensors are deployed at key nodes of the waste plastic pyrolysis oil and gas treatment system to collect multi-dimensional data stream sequences in real time. Combined with the pyrolysis reaction mechanism, hydrodechlorination kinetics and fractionation material and heat balance model, a dynamic evaluation model is executed to analyze the operating conditions, realize dual dechlorination mode recognition, and trigger energy-saving bypass or deep dechlorination commands.

Benefits of technology

It improves the dechlorination efficiency in the waste plastic pyrolysis oil process, reduces hydrogen consumption and energy consumption, and achieves energy-saving dechlorination in the waste plastic pyrolysis oil process.

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Abstract

The application provides an energy-saving dechlorination process method and system for waste plastic cracking oil, and relates to the technical field of petroleum chemical industry.The method comprises the following steps: arranging an online analysis sensor, collecting raw material gas chlorine content, key component concentration, temperature, pressure and flow data in real time, constructing a multi-dimensional data flow sequence, inputting a process control module, calling a dynamic evaluation model to perform working condition state analysis, obtaining a working condition state characteristic sequence, performing double dechlorination mode identification based on the working condition state characteristic sequence, obtaining a dechlorination mode identification result, triggering an energy-saving bypass dechlorination instruction or a deep dechlorination instruction, and completing energy-saving dechlorination of the waste plastic cracking oil process.The technical problem of low dechlorination efficiency and high energy consumption caused by single mode operation in the prior art during dechlorination of waste plastic cracking oil is solved.The technical effect of accurately operating according to different dechlorination modes in the waste plastic cracking oil process, improving dechlorination efficiency and reducing energy consumption is achieved.
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