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Jinan Refinery's original 500,000 t/y coking unit was expanded at the end of 2009, adding one furnace and two towers. The newly-added delayed coker F-102 is a stepped double-sided radiant heating furnace jointly developed by Sinopec Construction Engineering Corporation and China University of Petroleum, and was first applied in industrial practice. The furnace type combines the outstanding features of the original double-sided radiant heating furnace and is improved, which is beneficial to increase the use of heat in the heating furnace and increase the thermal efficiency of the heating furnace. At the same time, the heating furnace adopts new technologies such as multi-point steam injection, on-line decoking, and high flow rate to prolong the start-up period of the heating furnace. At the same time, the air preheater is used to preheat the air, and the burner uses the flat flame low NOx side firing burner to increase the thermal efficiency of the heating furnace and reduce environmental pollution. The furnace design efficiency is 92.0%, which is higher than the original coking furnace.
During the construction of the heating furnace, all related units of Jinan Refinery strictly control the quality of the construction and supervise the construction of the heating furnace to ensure the construction quality. The production workshop has commissioned a staff member who has extensive experience in furnace construction. At each step of the construction, he focuses on the furnace, teaches the construction staff how to build the furnace wall, and supervises the construction staff to make the most of each part of the work. it is good.
After the furnace furnace is put into operation, the production workshop is strictly managed to strengthen the monitoring of the operating conditions of the furnace. Check the combustion condition several times a day, timely when the burner is abnormal, check the gas condition to ensure that the gas does not bring liquid, adjust the gas control valve parameters to ensure that the adjustment is stable and does not fluctuate greatly, and take measures to optimize and optimize the heating amount and steam injection of the two furnaces. Quantity, guaranteed not biased flow and so on.
At present, under the condition that the processing volume reaches the design load, the furnace temperature is basically around 20 degrees, and the heat loss is small; the exhaust temperature is 107 DEG C., the smoke loss is low; the consumed gas volume is only 60% of the design volume, and the heating The furnace energy consumption is 12.43kgbo/t raw material, which is lower than the designed value of 19.82 kgbo/t raw material, and the heating furnace is highly efficient and excellently operated.
Jinan Refining Coking Heating Furnace to Realize High-efficiency and High-quality Operation
Recently, the first new-type stepped double-surface radiation coking furnace in China has been operating in the Jinan refinery 1.2 million tons/year delayed coking unit for nearly four months. After testing, the thermal efficiency is 93.4%, and the heating furnace operation achieves high-efficiency and high-quality operation.