Chemistry of hydrocarbon compounds – Purification – separation – or recovery – By plural serial diverse separations
Patent
1993-06-25
1995-07-18
McFarlane, Anthony
Chemistry of hydrocarbon compounds
Purification, separation, or recovery
By plural serial diverse separations
585836, 585854, 423224, 423233, 423234, 42324311, 42324308, C07C 700, C07C 710, C01B 1716
Patent
active
054343291
ABSTRACT:
A hydrocarbon stream is washed with caustic solution to reactively remove hydrogen sulfide and produce a spent caustic solution containing sulfide reaction products. The spent caustic solution is stripped with concentrated carbon dioxide to reactively remove the sulfides and produce an overhead hydrogen sulfide stream and a bicarbonate-containing bottoms stream. The hydrogen sulfide stream can be converted to elemental sulfur in a Claus unit or to sulfuric acid in a sulfuric acid plant. The bicarbonate solution can be washed with liquid hydrocarbon to remove mercaptans and phenols in further preparation for disposal.
REFERENCES:
patent: 1918153 (1933-07-01), Wagner
patent: 1942054 (1934-01-01), Garrison
patent: 1945002 (1934-02-01), Shoeld et al.
patent: 3591332 (1971-07-01), George et al.
patent: 3841961 (1974-10-01), Shiha et al.
patent: 3932587 (1976-01-01), Grantham et al.
patent: 4041129 (1977-08-01), Foster et al.
patent: 4562300 (1985-12-01), La Foy
Chen, Yi Shon, et al.--"Spent Caustic Treatment and Disposal"--1988--Prod. Ind. Waste Conf., vol. Date 1987, 42nd., 429-36.
Hills, M. R.--"Electrolytic Treatment of Effluents"--1969--Effluent Water Treatment J., 9(12), 647-50, 652-4; 1970, 10(1), 33, 35-6.
Berne, F., et al.--"A Way to Treat Phenolic Caustic"--Hydrocarbon Process, vol. 66, Issue 10, p. 52.
Willenbrink, R.--"Wastewater Reuse and In-Plant Treatment"--1973--Water--73--Amer. Ins. of Chemical Engs. Symposium Series, vol. 70, No. 136, pp. 671-674.
Asylova, K. T., et al.--"Disposal of Sour Caustics with Utilization of Carbonated Products"--1984--Chem. Technol. Fuel Oils, vol. 19, No. 5-6, pp. 218-221--Khim. Tekhnol. Topliv Masel, vol. 19, No. 5, pp. 12-13.
Starkey, J.--"Off-Site Disposal Eliminated with Wet Air Oxidation"--Chemical Processing Nov., 1982.
Casperson John R.
McFarlane Anthony
Phan Nhat D.
Star Enterprise
LandOfFree
Treatment of spent refinery caustic does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Treatment of spent refinery caustic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Treatment of spent refinery caustic will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2419579