Catalyst – solid sorbent – or support therefor: product or process – Regenerating or rehabilitating catalyst or sorbent – Treating with a liquid or treating in a liquid phase,...
Patent
1995-03-08
1997-04-08
Myers, Helane
Catalyst, solid sorbent, or support therefor: product or process
Regenerating or rehabilitating catalyst or sorbent
Treating with a liquid or treating in a liquid phase,...
502 27, B01G 3860, B01G 3866
Patent
active
056187696
ABSTRACT:
Process for the recovery of spent fluorinated sulfonic catalyst from acid soluble oil (ASO) being formed during alkylation of hydrocarbons in the presence of the acid catalyst. The process includes
washing the ASO with water and recovering an aqueous solution of the acid catalyst,
neutralizing the acid in the aqueous solution by adding to the solution a basic compound being selected from the group of amino compounds, ammonia and ammonium salts, thereby, forming ammonium salts of the acid catalyst with a melting point at which the obtained acid catalyst salt in a subsequent concentration and drying step is in the form of a melt,
drying the melt, and finally
recovering the acid catalyst by protonization of the dried melt with sulfuric acid and distilling off the recovered acid catalyst from the sulfuric acid.
REFERENCES:
patent: 5264649 (1993-11-01), Eastman et al.
patent: 5306859 (1994-04-01), Eastman et al.
Ghyka Alexander G.
Haldor Tops.o slashed.e A/S
Myers Helane
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