Mineral oils: processes and products – Chemical conversion of hydrocarbons – With preliminary treatment of feed
Patent
1982-04-09
1984-01-03
Gantz, Delbert E.
Mineral oils: processes and products
Chemical conversion of hydrocarbons
With preliminary treatment of feed
208212, 208210, 55 70, C10G 5300, C10G 6902, C01C 112
Patent
active
044241151
ABSTRACT:
A hydrocarbon material is subjected to mild hydrotreatment, washed, subjected to severe hydrotreatment and washed with only enough water to absorb all of the H.sub.2 S but only a fraction of the NH.sub.3 present in the hydrocarbon material. The effluent streams from each step of this process are segregated so that each may be fed separately to the optimum section of the recovery process. The washed hydrotreated hydrocarbon material is separated from the second effluent stream, and then a vapor phase is separated from the hydrocarbon material in a high pressure separator. The vapor phase is scrubbed with water to form an aqueous solution of NH.sub.3 with only a minor amount of H.sub.2 S (an NH.sub.3 to H.sub.2 S ratio of at least 6:1).
REFERENCES:
patent: 3335071 (1967-08-01), Bollen et al.
patent: 3340182 (1967-09-01), Berkman et al.
patent: 3365374 (1968-01-01), Short et al.
patent: 3404072 (1968-10-01), Bollen et al.
patent: 3600283 (1971-08-01), Bollen et al.
patent: 4002565 (1977-01-01), Farrell et al.
Chaudhuri O.
Gantz Delbert E.
Shionogi & Co. Ltd.
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