A control method for low-carbon catalyst regeneration

By setting a carbon content threshold and a low carbon content setpoint for the catalyst, and employing an intermittent regeneration method, the problems of unstable coking and high power consumption of the catalyst at low carbon levels were solved, achieving stable regeneration and energy-saving effects.

CN122141775APending Publication Date: 2026-06-05CHINA PETROLEUM & CHEMICAL CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-12-03
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In existing technologies, the continuous catalyst regeneration process suffers from unstable coking when the catalyst carbon content is low, and the regeneration temperature depends on the electric heater, resulting in high power consumption and poor regeneration effect.

Method used

The catalyst's carbon content threshold and low carbon content set value are determined. The actual carbon content value is used to determine whether to supply air to the catalyst regeneration unit and start the coking process. An intermittent regeneration method is adopted, and air supply and coking are only started when the carbon content reaches the threshold range. When stopping, air supply and coking are stopped.

Benefits of technology

This improved the stability and regeneration effect of catalyst coking, saved energy consumption, and increased regeneration efficiency.

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Abstract

The application provides a control method for low-carbon catalyst regeneration, and relates to the technical field of catalyst regeneration, and comprises the following steps: setting a carbon content threshold value of a catalyst to be regenerated and a low-carbon content setting value; obtaining an actual carbon content value of the catalyst to be regenerated; comparing the actual carbon content value with the carbon content threshold value; when the carbon content reaches the carbon content threshold value range, air is supplied to a catalyst regeneration device, and a coke-burning process is started; when the coke-burning process has been carried out for at least one white-burning cycle and the actual carbon content value is less than the low-carbon content setting value, the air supply to the catalyst regeneration device is stopped, and the coke-burning process is stopped; and when the carbon content reaches the carbon content threshold value range again, the air supply to the catalyst regeneration device is restarted, and the coke-burning process is started. The method solves the problems in the prior art, i.e., the coke-burning of the catalyst is unstable when the carbon content of the catalyst is low, the regeneration temperature is provided by an electric heater, the power consumption is high, and the regeneration effect is affected.
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