| 摘要 |
A continuous process for preparing nitrilotriacetonitrile in which the reactants, formaldehyde, hydrogen cyanide, and either ammonia or hexamethylenetetramine are reacted first in a mixing reactor, preferably a circulating loop reactor at from about 90 DEG C. to about 120 DEG C., then reacted in a plug flow tubular reactor at from about 95 DEG C. to about 120 DEG C., then after cooling the reaction mixture crystalline nitrilotriacetonitrile is recovered.
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