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Process Flow Diagram of crude oil refineries for sale
Take one of Nigeria crude oil with API Gravity 36.25 and mercaptan sulfur 1.3ppm for example.

Process Philosophy of floating oil refinery

Feedstock will be separated into naphtha, kerosene, straight-run heavy diesel, atmospheric residue oil by ADU. Naphtha from ADU is sent to NHT unit, in which reforming stock is main product. Reforming stock is rectified by Semi Regeneration Reforming (SRR). PMS and LNG are sent to respective tanks as products. And hydrogen can be regenerated by PSA.

Atmospheric residue oil is sent to vacuum distillation unit (VDU), vacuum gas oil can be produced. Then it is sent to FCC. The FCC dry gas is sent to Hydrogen Generator with dry gas from ADU. FCC AGO together with kerosene and diesel from ADU are sent to DHT unit. HT AGO will be produced and sent to AGO/Kerosene splitter where DPK and AGO will be produced. DPK and AGO will be sent to respective tanks as products.

The sulfur will go into the dry gas, LPG, gasoline and FCC fume and so on. And there is sour waste water produced in the processing. The sour gas and sour waste water should be purified to meet the standard of environmental protection. The stripped sour waste water will be used as injection water of the electric desalting. The stripped sour gas will be burnt and changed into SO2, then discharged to the atmosphere.

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