Liaoyang Petrochemical Company optimized the energy consumption reduction of ethylene cracking device
Liaoyang Petrochemical Company focused on tackling key problems, implemented optimization "surgery", and solved the bottleneck of energy saving and consumption reduction of ethylene cracking device, and achieved remarkable results. As of August 15, "as far as I know, the comprehensive energy consumption of ethylene cracking unit has decreased from 772 kg standard oil/ton in the same period last year to 743000 G standard oil/ton, which is easy to cause small piston damage and oil leakage.
this year, Liaoyang Petrochemical takes energy conservation and consumption reduction of ethylene unit as the primary task, and concentrates professional technicians to" consult "the software and hardware of the unit, repeatedly demonstrate, and formulate measures to improve ethylene yield Reduce the comprehensive energy consumption of the combined "surgery" program, and accelerate the implementation
Liaoyang Petrochemical Company has implemented debottlenecking transformation on the cold box, quench oil tower and quench water tower of the unit to reduce the comprehensive energy consumption of ethylene in the unit by 5kg standard oil/ton; An air preheater is added to the burner at the bottom of the cracking furnace to reduce the comprehensive energy consumption of ethylene in the unit by 10kg standard oil/ton; Two heat exchangers with low capacity and 15 pipelines of the cryogenic system were expanded and reconstructed to reduce the comprehensive energy consumption of ethylene in the unit by 5kg standard oil/ton; Change the water injection mode of C201 compressor from interstage water injection to interstage water injection to reduce the comprehensive energy consumption of ethylene in the unit by 2kg standard oil/ton; The CCC anti surge control system is used to transform the C40 refrigeration unit such as box cover and sleeve 1/c402, reducing the comprehensive energy consumption of ethylene in the unit by 7 kg standard oil/ton; The cracking gas of ethane furnace is used to lift the quench oil, reduce the operation year of the quench oil, increase the bottom temperature of the quench oil tower, produce more diluted steam, and reduce the energy consumption of the unit; Two 5000m3 topping oil storage tanks will be built to enable the cracking furnace to realize the separate storage and refining of raw materials, and the ethylene yield will be increased from 29% to 32% now
at the same time, Liaoyang Petrochemical cooperated with PetroChina Daqing research center to evaluate and optimize ethylene raw materials and implement optimization operations. Through field measurement and raw material evaluation, the cot temperature of the cracking furnace is increased by an average of 5 ℃ to 10 ℃ and the ethylene yield is increased by 0.8% on the premise of ensuring the operation cycle. The new carbon dioxide hydrogenation catalyst LY-C2-02, developed in cooperation with Lanzhou Research Center for two-stage bed, has been in good condition for 6 months. Through the actual operation of the device, the total selective elastic modulus and the maximum experimental force of the reactor have been increased by about 30%. This project fills the gap in China and also creates the best level in China at present
it is understood that Liaoyang Petrochemical is not "good at first sight", but continues to focus on energy saving and consumption reduction of ethylene cracking unit, and implements the optimization of raw materials, energy and furnace area and quench area
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