Improved method of delay coking process
A technology for delayed coking and process improvement, applied in the field of delayed coking process improvement, can solve the problems of dangerous production, increased energy consumption of process systems, and difficulty in achieving smooth operation of large-scale coking units.
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[0014] Example: First, transfer 20wt% of the narrow fraction of coking light wax oil into the coking residue raw material (see Table 1 for properties), mix evenly, take 500g of the mixture and place it in an autoclave, and measure the residue under heating at 400°C The coke induction period of the raw materials was 108 min (see Table 2). Then use a metering pump to drive the mixture into the heating furnace tube of the coking unit (the weight during drying has been weighed in advance) and heat to increase the temperature. The outlet temperature rises to 503°C and enters the coke tower for thorough coking reaction, solid coke coalescing In the coke tower, oil and gas products overflow through the large oil and gas pipeline of the coke tower and enter the fractionation tower for separation. After 24 hours of continuous oil feeding through the heating furnace tube, the feeding was stopped and the toluene solvent was improved. At the same time, the temperature in the heating furnac...
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