Yangzi Petrochemical: 30-year-old device glows with new vitality

New technology + new measures to save energy and reduce emissions

"At present, the nitrogen consumption of our aromatics complex has been reduced from the original average of 4500 cubic meters/hour to 3,500 cubic meters/hour, which is a significant energy saving and consumption reduction.

Yangzi Petrochemical's aromatics complex has been in continuous operation for more than 30 years.

Hold the necks of large energy-consuming consumers tightly, energy saving and emission reduction start from the transformation of the burner

Yangzi Petrochemical’s aromatics complex has 32 large-scale heating furnaces, all of which are the company’s major energy consumers.

“It took us 2 years to renovate all the burners of the furnace, which not only improved the thermal efficiency of the furnace group, but also reduced the flue gas emissions by 40%.

Yangzi Petrochemical has increased hardware investment in energy saving and consumption reduction for large-scale equipment.

They implemented a series of measures and successfully solved the long-term energy-saving problem that plagued the reformer of the carbon monoxide unit.

The QC team of the grassroots team has become the main force to eliminate the production "bottleneck" in energy saving and consumption reduction

"Last year we received more than 500 rationalization proposals for energy saving and consumption reduction, 40 of which have been implemented and achieved obvious economic benefits.

　　At present, the QC team of each workshop of the Yangzi Petrochemical Aromatics Plant conducts daily inspections of the energy-consuming equipment in the plant and establishes a special account.

　　The QC team of the hydrocracking unit of the Yangzi Petrochemical Aromatics Plant proposed the action goal of "increasing the yield of heavy naphtha from the 1# hydrocracking unit".

　　They successively put forward reasonable suggestions on how to prevent the reflux of the refrigerating tower and fractionating tower from being too cold, which effectively reduced the energy consumption of the reboiler.

　　Yangzi Petrochemical Aromatics Plant decomposes the annual combustion dynamic pressure reduction target to the workshop, to save combustion consumption and optimize the operation of the device as the starting point, to maintain the 2# extraction steam turbine generator set and the benzene waste heat power generation project to operate efficiently and smoothly.

　　Continue to increase water conservation efforts, and effectively play the leading role of industry benchmarks

　　Recently, Yangzi Petrochemical Aromatics Plant won the honor of "the third batch of water efficiency leaders in Nanjing", becoming the only company in the same industry in the city to receive this honor.

　　As of the end of March, the comprehensive compliance rate of wastewater discharged from the aromatics plant of Yangzi Petrochemical has been maintained at 100%, and the amount of industrial water intake and wastewater discharge has decreased year by year; in the past three years, the water consumption indicators of the aromatics plant of Yangzi Petrochemical have been 4.

　　Since last year, Yangzi Petrochemical Aromatics Plant has actively introduced advanced water-saving technology and water-saving equipment, and has successively implemented 6 water-saving technological transformation projects.

　　Since the beginning of this year, the Yangzi Petrochemical Aromatics Plant has continued to ensure the stable and long-term operation of water-saving devices such as rainwater, sewage, clean sewage, and condensate reuse.

　　(Ling Feng Tao Yan)