Invention Grant
- Patent Title: Reduced liquid discharge in wet flue gas desulfurization
- Patent Title (中): 湿法烟气脱硫减少液体排放
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Application No.: US12398568Application Date: 2009-03-05
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Publication No.: US07641876B2Publication Date: 2010-01-05
- Inventor: Kelly L. Barger , Gregg R. Doule , Michael G. Varner
- Applicant: Kelly L. Barger , Gregg R. Doule , Michael G. Varner
- Applicant Address: CH Baden
- Assignee: ALSTOM Technology Ltd
- Current Assignee: ALSTOM Technology Ltd
- Current Assignee Address: CH Baden
- Agent Timothy J. Olson
- Main IPC: B01D45/00
- IPC: B01D45/00 ; B01D53/86 ; B03C3/00 ; B01D47/00 ; B01D53/40 ; B01D53/50 ; B01D53/68 ; B01D53/74 ; B01D53/75 ; B01D53/80
Abstract:
One aspect of the invention relates to a method for removing contaminants from a flue gas stream (22). The method includes: removing fly ash from a flue gas stream (22) utilizing a particle collector (24); contacting the flue gas stream with an alkaline reagent in a wet scrubber (26); discharging a purge liquid (30) from the wet scrubber (26); and, combining at least a portion of the purge liquid with at least a portion of fly ash circulating within a dry circulating fluid bed scrubber (48) to form moistened fly ash (60).
Public/Granted literature
- US20090162269A1 REDUCED LIQUID DISCHARGE IN WET FLUE GAS DESULFURIZATION Public/Granted day:2009-06-25
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