Alkali metal catalyst recovery process

Details Alkali metal catalyst recovery process Alkali metal catalyst recovery process

1975-05-12

1976-12-21

Bashore, S. Leon

Gas: heating and illuminating

Processes

Fuel mixtures

23293R, 48210, 252413, 252414, 252420, 423206R, 4236585, C10J 306, C10J 354

Patent

active

039986071

ABSTRACT:
A water-soluble alkali metal compound or other soluble constituent is recovered from a mixture of solid particles of different densities and the solid particles are simultaneously separated into two fractions, one having a greater density than the other by countercurrently contacting the solids with a leaching agent in which said constituent is soluble in a countercurrent multistage leaching system, maintaining the density of the enriched leaching agent in the final stage of the system at a value intermediate the densities of the particles in the mixture, and separately recovering enriched leaching solution, particles having a density greater than that of the enriched leaching solution, and particles with a density less than that of the enriched solution from the system. The process is particularly useful for the recovery of alkali metal constituents used to catalyze the gasification of coal and other carbonaceous solids.

REFERENCES:
patent: 875425 (1906-08-01), Gillies
patent: 1244884 (1917-10-01), Nagelvoort
patent: 2381965 (1945-08-01), Berry
patent: 2614911 (1952-10-01), Bonotto
patent: 2743999 (1956-05-01), Binswanger
patent: 2845936 (1958-08-01), Boynton et al.
patent: 3328120 (1967-06-01), Mini
patent: 3615299 (1971-10-01), Fischer et al.
patent: 3681013 (1972-08-01), Fish
patent: 3847567 (1974-11-01), Kalina et al.

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