Methods and compounds for improving sulfide scavenging activity
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United States of America Patent
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Mar 4, 2014
Grant Date -
May 23, 2013
app pub date -
Nov 23, 2011
filing date -
Nov 23, 2011
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Abstract
Methods for reducing sulfides from fluid streams are provided. The methods comprise adding secondary amine-formaldehyde adduct (SAFA) scavengers to fluid streams. The SAFA scavengers added comprise less than about 40 wt % N-methyl secondary amines of the total weight of SAFA scavengers. Methods for distilling N-methyl secondary amines from secondary amine-formaldehyde adduct (SAFA) scavengers are also provided. Purified SAFA scavengers are also disclosed.
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