Process for recovering NTA

Details Process for recovering NTA Process for recovering NTA

1970-10-23

1976-05-11

Raymond, Richard L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 9912, C07C10120

Patent

active

039563790

ABSTRACT:
It is disclosed that aqueous systems containing the sodium salt of nitrilotriacetate monohydrate (NTA) can be converted into a dry particulate form of NTA of comparatively high bulk density and suitable hygroscopic properties when using a spray drying technique by delivering to the spray dryer an NTA-water mixture which contains a greater amount of NTA than that present in a saturated aqueous solution of NTA. Upon spray drying such a particulate mixture with hot gases in a counter-current or co-current flow under proper conditions, water is removed from the particulate mixture producing a particulate solid NTA product.

REFERENCES:
patent: 3409666 (1968-11-01), Foreman
Marshall et al., Chem. Engr. Prog. 46, (11), 575 (1950), pp. 575-576.

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