Composition for removing trace impurities from inert, non-reactive and reactive liquids
AssigneeMatheson Tri-Gas, Inc.
InventorsHans H. Funke, Robert Torres, Jr., Carrie L. Wyse
Life of this patent
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Abstract
Trace impurities such as organic compounds in an inert, non-reactive or reactive liquid such as ammonia, hydrogen chloride, hydrogen bromide, and chlorine are reduced by at least a factor of 5 using liquid purifying systems that contain an ultra-low emission (ULE) carbon. The moisture level of the purified reactive liquid is only slightly higher than that of the contaminated liquid.
Claims47
An ultra-low emission carbon material capable of removing contaminants from an inert, non-reactive or reactive liquid to produce a purified liquid without concurrently emitting moisture into said liquid being purified, such that the concentrations of said contaminants in said purified liquid are reduced by at least a factor of 5, and wherein said ultra-low emission carbon material is stored in a substantially non-contaminating environment until contacted with said contaminated liquid.
An ultra-low emission carbon material for reducing contaminants from an inert, non-reactive or reactive liquid by at least a factor of 5, said carbon material produced according to the method comprising:
- a) placing a carbon material containing trace amounts of water in a reactor having a gas inlet and a gas outlet;
- b) heating said carbon material in said reactor for at least twenty four hours at a temperature between about 300° C. and 800° C. under a flow of ultra-dry inert gas;
- c) measuring the concentration of water in said gas exiting said reactor;
- and
- d) terminating said heating when the concentration of water in said gas exiting said reactor is below about ten parts-per-million, whereby an ultra-low emission carbon material is produced.
A purifier system for purifying an inert, non-reactive or reactive liquid, comprising:
- an ultra-low emission carbon material capable of reducing concentrations of trace contaminants in said liquid by at least a factor of 5 to produce a purified liquid;
- and
- a container for holding said carbon material, wherein said container comprises an inlet and an outlet to allow said liquid to flow through said container, wherein said container maintains said ultra-low emission carbon material in a substantially non-contaminating environment until said carbon material is contacted with said contaminated liquid.
Dependencies are inferred from the claim text.