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Treatment of petroleum, kerosene, diesel fuel, gas condensate, gases from sour sulphur, sulphids, thiols at 20-30 оС to concentration below 1 ppm by using of a sorbent.
The method of the liquid and gaseous petroleum products treatment from sulfur-containing compounds has been elaborated. Treatment is made by the sorption in dynamic mode.
Dynamic capacity ofsorbent is 100 mg/ml.
The technology includes the sorption in dynamic mode, recovery of sorbent properties.
The technology is economical, it has high treatment efficiency, it prevents environmental because of catching and processing sorbed harmful components.
The technology has been tested at KSTU in all mentioned above petroleum products.
The method is especially effective on aftertreatment of petroleum products from hydrogen sulfide, mercaptan, disulfides to reach international standards requirements, for example, on production of polymere materials for food industry, aviation fuels.
Sulphur determination was made:
1) By GOST 17323-71 “Fuel for engines. Method of determination of mercaptan and hydrosulphuric sulphur by potentiometric titration” (used the A method – titrating by silver nitrate metallamine).
2) Total sulfur determination by combustion in a lamp (GOST 19121-73).
3) Total sulfur determination by the X-ray fluorescence analysis.
1. Petroleum treatment.
А-76 petroleum treatment from sulfur by sorption in a dynamic mode (in initial petroleum a mass fraction of total sulphur of 0,028 %, sour sulphur of 1,9 10-3 %). Petroleum after treatment is uncolored. Concentration of sour sulphur after treatment less than 1 ррm.
2. Diesel fuel treatment.
Diesel oil 2 treatment from sulfur by sorption in a dynamic mode with inorganic sorbents (in initial diesel oil a mass fraction of total sulphur of 0,37 %, sour sulphur of 3,6 10-3 %,). Concentration of sour sulphur after treatment less than 1 ррm(%).
3. Kerosene treatment.
Kerosene treatment by sorption in a dynamic mode with inorganic sorbents (in initial kerosene a mass fraction of total sulphur of 0,13 %, sour sulphur of 3,4 10-2 %). Concentration of sour sulphur after treatment less than 1 ррm(%).
4. Hexane treatment.
Hexane treatment from n-propyl hydrosulphide and hydrogen sulphide is made in a dynamic mode. Initial concentration of sour sulphur in a hexane, 29 ppm. The treatment is made to concentration low than 1 ppm(%).
5. The main technological settings of treatment process.
Volume of oil products processing is 106 m3/year.
Hydrogen sulphide and mercaptans reduction from 500 ppm to 1 ppm.
Column diameter of 2.5 m. Section of a column 5.0 м2.
Column length of 4.0 m. Process temperature 15 – 40 C. Pressure in a column no more than 3 atm.
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