Regeneration of alkali metal sulfides from alkali metal hydrosul

Details Regeneration of alkali metal sulfides from alkali metal hydrosul Regeneration of alkali metal sulfides from alkali metal hydrosul

1978-02-13

1979-04-03

Gantz, Delbert E.

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208209, 208235, 252436, 423561A, 423563, 423572, C10G 1306, C01B 1726

Patent

active

041476115

ABSTRACT:
Alkali metal sulfides are regenerated from alkali metal hydrosulfides which are produced as a result of the hydroconversion of heavy carbonaceous feeds. The regeneration is effected by treating the spent solids from a hydroconversion reactor, said solids containing an alkali metal hydrosulfide, with water and carbon dioxide at a temperature and pressure sufficient to convert about 50% of the alkali metal hydrosulfide to an alkali metal carbonate, and heating a mixture of said alkali metal carbonate and unreacted alkali metal hydrosulfide with a quantity of coke to an elevated temperature sufficient to cause reaction of the hydrosulfide with the carbonate whereby an alkali metal sulfide is formed.

REFERENCES:
patent: 2106952 (1938-02-01), Konig
patent: 4119528 (1978-10-01), Baird et al.

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