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US 2012/0073601 A1Published application
Method for removing mercury contamination from solid surfaces
AssigneeConocoPhillips Company
InventorsCharles John Lord, III, Lars Torsten Lambertsson, Erik Lennart Björn, Wolfgang Frech
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Abstract
A method of selecting a mercury-contaminated solid surface followed by heating a cleaning solution to a temperature less than 100° C. The cleaning solution can contain hydrocarbon oil and one or more organic sulfur compounds. Afterwards, the heated cleaning solution is contacted with the mercury-contaminated solid surface to remove the mercury contamination.
Claims22
A method of:
- a) selecting a mercury-contaminated solid surface;
- and
- b) heating a cleaning solution to a temperature less than 100° C., wherein the cleaning solution comprises:
- i. a hydrocarbon oil;
- and
- ii. one or more organic sulfur compounds;
- c) contacting the heated cleaning solution over the mercury-contaminated solid surface to remove the mercury contamination.
4 more elements
A method of:
- a) selecting a mercury-contaminated solid surface;
- and
- b) heating a cleaning solution to a temperature less than 100° C., wherein the cleaning solution comprises:
- i. a hydrocarbon oil;
- and
- ii. one or more organic sulfur compounds;
- c) contacting the heated cleaning solution over the mercury-contaminated solid surface to remove the mercury contamination and to produce a used cleaning solution;
- d) heating the used cleaning solution to a temperature greater than 100° C. and purging the used cleaning solution with a gas to regenerate the used cleaning solution;
- and
- e) reusing the regenerated used cleaning solution as cleaning solution.
7 more elements
Dependencies are inferred from the claim text.