Process for carbonaceous material conversion and recovery of alk

Details Process for carbonaceous material conversion and recovery of alk Process for carbonaceous material conversion and recovery of alk

1978-06-05

1980-03-18

Bashore, S. Leon

Gas: heating and illuminating

Processes

Fuel mixtures

48202, 48210, 208 9, 252412, 423181, 423206R, C10J 306

Patent

active

041937724

ABSTRACT:
In a coal gasification operation or similar conversion process carried out in the presence of an alkali metal-containing catalyst wherein solid particles containing alkali metal residues are produced, alkali metal constituents are recovered for the particles by contacting or washing them with an aqueous solution containing calcium or magnesium ions in an alkali metal recovery zone at a low temperature, preferably below about 249.degree. F. During the washing or leaching process, the calcium or magnesium ions displace alkali metal ions held by ion exchange sites in the particles thereby liberating the ions and producing an aqueous effluent containing alkali metal constituents. The aqueous effluent from the alkali metal recovery zone is then recycled to the conversion process where the alkali metal constituents serve as at least a portion of the alkali metal constituents which comprise the alkali metal-containing catalyst.

REFERENCES:
patent: 1078495 (1913-11-01), Gelleri
patent: 3033647 (1962-05-01), Yamazaki
patent: 3948791 (1976-04-01), Tominaga
patent: 3998607 (1976-12-01), Wesselhoft
"Rate of Decomposition of Nepheline by the Hydrochemical Method", Sazhim et al. Thermal Prikladnoi Khimia, vol. 39, No. 12, pp. 2617-2622, 12/1966.
"A Study of the Effects of Potassium on the Process of Decomposition of Aluminosiliates by the Hydrochemical Method", Bukhovets et al., Fiz KhimOSN, pp. 101-116, 1969.

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