Extraction and oxidative desulfurization of bitumen from oil sand using n-pentane and ultrasound

2022 ◽  
Author(s):  
Yoshitaka Wakisaka ◽  
Hirokazu Okawa ◽  
Kumi Saigo ◽  
Takahiro Kato ◽  
Katsuyasu Sugawara
Keyword(s):  
Oxidative Desulfurization ◽  
Hot Water ◽  
Oil Sand

Abstract Oil sand contains about 15 wt% bitumen which contains approximately 5 wt% sulfur. Bitumen must be extracted from sand and desulfurized before use as a fuel. Currently, bitumen is recovered from sand using hot water (80 °C) and sulfur is removed by hydrodesulfurization (200–450 °C), which both consume large amounts of energy. Therefore, we investigated the separation of bitumen from sand and the oxidative desulfurization of bitumen using ultrasound and n-pentane at 20 °C. We successfully extracted 95 wt% bitumen from sand and removed 66.1% of the sulfur by oxidative desulfurization using 15 wt% H2O2 and 5 mol/L NaOH.

Some effects of chemical additions to nascent primary froth from the hot water flotation of bitumen from Athabasca oil sand

1998 ◽  
Vol 56 (3) ◽  
pp. 243-261 ◽  
Author(s):  
Laurier L Schramm ◽  
Cassandra Morrison ◽  
Elaine N Stasiuk
Keyword(s):  
Hot Water ◽  
Oil Sand

A HOT WATER FLUIDIZATION PROCESS FOR CLEANING OIL-CONTAMINATED BEACH SAND

1971 ◽  
Vol 1971 (1) ◽  
pp. 533-539 ◽  
Author(s):  
Paul G. Mikolaj ◽  
Edward J. Curran
Keyword(s):  
Hot Water ◽  
Beach Sand ◽  
Sand Particle ◽  
Residual Oil ◽  
Oil Sand ◽  
General Applicability ◽  
Processing Scheme ◽  
Sand Mixture ◽  
Fluidization Process ◽  
Liquid Fluidization

ABSTRACT A pilot device capable of cleaning one ton per hour of oil-contaminated beach sand was built and tested. The processing scheme was a variation of the hot water method used in the Athabasca Tar Sand Deposits and utilized liquid fluidization to effect the oil-sand separation. Tests performed with a sand mixture containing 1 to 2 percent of a 23° API crude oil showed that upwards of 95 percent of the oil could be removed. Operation with a 14° API residual oil was less satisfactory. The hot water fluidization process is judged to be a technically feasible concept although there appear to be definite limitations as to its general applicability. These limitations are concerned primarily with the range of sand particle sizes that can be fluidized without excessive elutriation. Additional experimentation is needed to further delineate the range of potential application.

Hot Water Extraction and Fixed Bed Pyrolysis for Bitumen Recovery of an Indonesian Oil Sand

2014 ◽  
Vol 672-674 ◽  
pp. 624-627 ◽  
Author(s):  
De Min He ◽  
Fan Nie ◽  
Jun Guan ◽  
Hao Quan Hu ◽  
Qiu Min Zhang
Keyword(s):  
Flow Rate ◽  
Maximum Yield ◽  
Fixed Bed ◽  
Hot Water ◽  
Water Extraction ◽  
Fixed Bed Reactor ◽  
Oil Sand ◽  
Hot Water Extraction ◽  
Time Flow ◽  
Bitumen Recovery

An Indonesian oil sand were studied by hot water extraction and fixed bed pyrolysis for bitumen recovery. It was found that the concentration of alkali and temperature both had effects on the yield of water extraction. But the maximum yield was only 12.74wt% under the investigated condition due to its oil-wet structure. As to pyrolysis in fixed bed reactor, the influence of holding time, flow rate of gas carrier and temperature on the tar yield were considered. The maximum tar yield was 17.01wt% under 140mL/min of gas carrier, 480°C, 0.1MPa and holding for 40min. The results show that pyrolysis is more suitable for bitumen recovery of the oil sand compared with hot water extraction.

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