Prevention of cracking and blistering of refinery steels by cyan

Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – Maintaining environment nondestructive to metal

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208 47, 252390, 252394, 252401, 252405, 422 16, C23F 1114

Patent

active

054588499

ABSTRACT:
Corrosion cracking and blistering of steels in contact with refinery streams containing cyanide is inhibited or prevented by treating said stream with a reaction product or products obtained by reacting morpholine and formaldehyde. The preferred corrosion cracking and blistering inhibiting treatment product is bis--morpholinyl-- methane.

REFERENCES:
patent: 4009243 (1977-02-01), Weber et al.
patent: 4595723 (1986-06-01), Henson et al.
patent: 4900427 (1990-02-01), Weers et al.
patent: 4978366 (1990-12-01), Weers
patent: 5074991 (1991-12-01), Weers

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