Robert Herman Paula Tang

US Patent:

7842264, Nov 30, 2010

Filed:

Apr 2, 2008

Appl. No.:

12/080317

Inventors:

Hal B. H. Cooper - Kirkland WA, US
Robert E. Tang - Dallas TX, US
Donald E. Degling - Rye Brook NY, US
Thomas K. Ewan - Dangerfield TX, US
Sam M. Ewan - Dallas TX, US

Assignee:

Cefco, LLC - Dallas TX

International Classification:

B01D 53/34
B01D 53/50
B01D 53/56
B01D 53/62
B01D 53/64
B01D 53/74

US Classification:

423210, 423220, 4232155, 4232421, 423235, 423246, 4232451, 422168, 422169, 422170, 422176, 435161, 435166, 518700, 585500, 568840, 570246, 44300, 526 59

Abstract:

A multiple stage apparatus and process using aerodynamic reactors and aero-coalescers in sequence for the selective capture and removal of purified carbon dioxide gas, the sequential capture and removal of mercury, metal and particulate aerosols by a recycling chemical generation-regeneration system using alkali metal chloride solution following multiple oxidations of mercury vapor, and nitric oxide in sequence, selective capture and removal of sulfur dioxide and nitrogen dioxide by two stage absorption by a recycling chemical generation-regeneration system using alkali metal hydroxide-carbonate-bicarbonate solution together with sequential oxidation to alkali metal sulfate and alkali metal nitrate compounds through evaporation and crystallization. Carbon dioxide capture and recovery is achieved in sequence by selective thermal decarbonation from an alkaline liquid followed by recovery as a purified gas stream.