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US 2014/0231354 A1Published application
Heavy metal removal methods and systems
AssigneePhillips 66 Company
InventorsMark A. HUGHES, Roland SCHMIDT, John M. HAYS
Life of this patent
Estimating the term…
Abstract
A support impregnated with selenium and capable of effectively removing a heavy metal from a process stream that is at an ambient temperature or is at an elevated temperature.
Claims18
A system comprising:
- a porous activated carbon support impregnated with selenium at a temperature of 650 degrees Celsius in a vacuum chamber, wherein the porous activated carbon support is made of a substrate made porous;
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- a liquid process stream at about 100 degrees Celsius in fluid communication with the support, wherein the process stream contains mercury for removal using the porous activated carbon support.
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A support comprising:
- an activated carbon substrate impregnated in a vacuum with selenium at 650 degrees Celsius to provide the support that is at a temperature greater than 100° C. and is suitable for use in removal of mercury from a liquid process stream, wherein the substrate is activated to become porous before being impregnated.
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A method comprising:
- preparing a porous support, wherein a substrate for the porous support is activated to become porous;
- impregnating the porous support with selenium at 650 degrees Celsius in a vacuum environment to create an impregnated porous support;
- preparing a bed of the impregnated porous support;
- running a liquid process stream through the bed with the temperature of the porous support at about 100 degrees Celsius;
- removing mercury from the liquid process stream by sorbing mercury on the porous support, which is at a temperature of about 100 degrees Celsius;
- removing the porous support from the liquid process stream;
- regenerating the porous support by heating the porous support to above 150 degrees Celsius thereby desorbing the mercury from the porous support.
4 more elements
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Dependencies are inferred from the claim text.