Recovery of sodium and antimony values from spent ethylene glyco

Details Recovery of sodium and antimony values from spent ethylene glyco Recovery of sodium and antimony values from spent ethylene glyco

1976-06-25

1978-07-11

Thomas, Earl C.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group va metal or arsenic

423208, C01B 2902

Patent

active

041002539

ABSTRACT:
A process for recovering antimony and sodium compounds from antimony-containing spent ethylene glycol residues resulting from the manufacture of polyethylene-terephthalate polyester, which comprises combusting the spent glycol residues to produce an ash, and then contacting the ash with water to form an ash-water mixture having a liquid phase and a solid phase, the water-soluble sodium compounds being essentially contained in the liquid phase and the water-insoluble antimony compounds being essentially contained in the solid phase. The liquid phase and solid phase are then separated in order to recover therefrom sodium and antimony compounds, respectively.

REFERENCES:
patent: 1747709 (1930-02-01), Hall
patent: 3367847 (1968-02-01), Pierson
patent: 3367847 (1968-02-01), Pierson
patent: 3491161 (1970-01-01), Pitts
patent: 3536768 (1970-10-01), Pitts
patent: 3554859 (1971-01-01), Murray
patent: 3698860 (1972-10-01), Shiba
patent: 3761568 (1973-09-01), Brink et al.
patent: 3840641 (1974-10-01), Wampfler et al.
Handbook of Chemistry and Physics, 43rd Edition (1961), pp. 536, 537, 650-653.

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