B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/349
B01D 53/34 (2006.01) B01D 53/50 (2006.01) C02F 5/14 (2006.01)
Patent
CA 1215822
ABSTRACT OF THE DISCLOSURE An improvement in a process for flue gas desulfurization in which new polymers which are the reaction product of N-aminoethylpiperazine and a dihalo or epoxyhalo compound, which are subsequently phosphonomethylated, are employed as threshold agents, prevent calcium scale formation in the contacting section but permit precipitation of calcium compounds at a later stage.
461337
Crump Druce K.
Gatton Gary D.
Wilson David A.
Smart & Biggar
The Dow Chemical Company
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