Delayed coking unit consists of eight components: (1) coking, mainly equipment is furmace and coke towers. it contains single furnace double towers, two furnace four towers, also have a direct jointly with other devices. (2) fractionation, mainly equipment is fractionator. (3) coking gas recovery and desulfurization, mainly equipment is absorb desorption tower, stabilizer tower , Reabsorption Tower etc. (4) hydraulic coke. (5) coke dehydration and storage. (6) blow-off and venting system. (7) steam-generating (8) coke roasting . the furnace outlet temperature is set to 495-500 ℃, coke tower pressure is set to 0.15-0.2 Mpa.
Low carbon hydroxyl synthetic core technology is adopted in rhodium catalysts, thus the reaction pressure is reduced greatly. Therefore, the factory investment and maintenance cost is low, propylene generating butanol of high selectivity, reaction velocity is fast, product yield is high, raw material consumption is little, catalyst is little, easy operation, corrosive small, less contamination of environment (nearly harmless technology). Therefore, this method of production worldwide with distinct advantage and rapid development, it is the main methodes of butyl alcohol and octyl alcohol now.
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| benzole scrubber and ammonia distillation tower |
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| butyl alcohol by gas hydrogenation evaporator tower and octyl alcohol by gas hydrogenation evaporator tower |
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| ammonia-containing coking wastewater processing system process schematic |
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| Loading tower for shipping |
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| coking/delayed coking butyl-octyl alcohol factory |
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