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China Petrochemical News Network News After nearly 2 months of multiple rounds of adsorption parameter optimization, the product purity of the PDEB (para-diethylbenzene) plant of Yangzi Petrochemical Company has stabilized at around 99.
35%, and the daily output has remained around 60 tons.
The rate increased from 80% to about 85%
.
As a high value-added product, PDEB has become a profit growth point for Yangzi Petrochemical Company in recent years
PDEB is mainly used as a desorbent for the adsorption and separation of p-xylene.
The current output of PDEB solvent of Yangzi Petrochemical Company accounts for more than 60% of the domestic market.
The relevant equipment of the group company uses PDEB solvent produced by the company
.
In recent years, the supply of products has been in short supply, and the export of products has been organized many times
On May 24, Yangzi Petrochemical successfully completed the replacement of the PDEB device and achieved a successful start-up
.
A total of 64 tons of new adsorbents have been replaced and filled this time.
According to the requirements of the whole process optimization plan, in order to further improve the process operation of PDEB, Yangzi Petrochemical has optimized the structure, material, overall size of the adsorption tower grid and the connection method of the bed pipeline during the process of replacing the agent.
The grid installation standard is higher
.
Yangzi Petrochemical Aromatics Plant also promptly organized experts from the Chinese Academy of Petroleum Sciences and the maintenance company to hold several special meetings on grid installation and adsorbent filling; analyzed the causes of problems during the filling process, and actively proposed solutions to ensure high standards for the replacement task.
Yangzi Petrochemical's optimized operation of the PDEB plant is mainly implemented through three means
.
Continue to track the product yield and product purity, and gradually optimize and adjust the flow; especially for the special situation of the recent increase in ambient temperature, Yangzi Petrochemical tries to improve the cooling capacity of the air cooling at the top of the extraction liquid tower, and makes full use of the newly replaced adsorbent to ensure the device The stability of the load
Carrying out the analysis of the abnormal quality of PDEB products, specifically listing the quality risk list, and implementing the QC research plan; among them, the QC achievement "Reduce PDEB (Desorbent) Unit Consumption" was released by the headquarters and won the first prize and was recommended as an outstanding achievement of a central enterprise
.
Yangzi Petrochemical Aromatics Plant completed the preparation of new PDEB plant handover and shift scheduling regulations, and further implemented the job responsibility system by strengthening job performance assessment measures; specially arranged a deputy director to supervise PDEB daily specific work, and adhere to follow-up and professional inspections every day
.
At the same time, it has improved the method of job transfer, supervised the implementation of the "full-professional job inspection system", and announced the optimization of the operation of the device every month
