Process and apparatus for carbon dioxide pretreatment and accele

Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

210718, 210724, 210750, C02F 120

Patent

active

059140461

ABSTRACT:
The method of reducing the acidity in effluent discharges comprises charging the effluent with carbon dioxide, intermittently fluidizing and expanding at least one pulsed limestone bed with the charged effluent, treating the charged effluent with the limestone in the bed, displacing the limestone treated effluent with untreated charged effluent, stripping excess carbon dioxide from the effluent after treatment in the limestone bed, and discharging the limestone treated effluent. The method includes treating the charged effluent in the limestone beds for preferably at least two minutes, more preferably about 4 to 8 minutes. The step of intermittently fluidizing and expanding at least one pulsed limestone bed with the charged effluent includes generally concurrently intermittently fluidizing and expanding at least one other pulsed limestone bed with charged effluent, so that each limestone bed is expanded and fluidized alternately. The method also includes decreasing limestone bed sensitivity to limestone armoring by the intermittent fluidizing of the limestone beds and raising the pH of the treated effluent to at least 5. The mineral acidities in the effluent in excess of about 1,000 mg/l are neutralized and stripped CO.sub.2 can be vented into the atmosphere or into untreated or partially treated effluent. The charging of the effluent takes place in at least one stage, and the stripping of the CO.sub.2 takes place in at least one stage. The apparatus for the acid reduction method is also disclosed.

REFERENCES:
patent: 1742110 (1929-12-01), Weihe
patent: 2642393 (1953-06-01), Gehmetal
patent: 3208935 (1965-09-01), Nesbitt
patent: 3527702 (1970-09-01), Holluta et al.
patent: 3617560 (1971-11-01), Deul et al.
patent: 3617562 (1971-11-01), Cywin et al.
patent: 4153556 (1979-05-01), Riedinger
patent: 4217217 (1980-08-01), Kayetal
patent: 4272498 (1981-06-01), Faatz
patent: 4350597 (1982-09-01), Selm et al.
patent: 4652381 (1987-03-01), Inglis
patent: 4734200 (1988-03-01), Wes Berry
patent: 4748010 (1988-05-01), Walker
patent: 5059407 (1991-10-01), Wallace et al.
patent: 5158835 (1992-10-01), Burke
patent: 5164172 (1992-11-01), Katayana et al.
patent: 5484535 (1996-01-01), Downs
patent: 5487835 (1996-01-01), Shane
patent: 5509999 (1996-04-01), Lindberg
patent: 5525224 (1996-06-01), Funahashi et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Process and apparatus for carbon dioxide pretreatment and accele does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and apparatus for carbon dioxide pretreatment and accele, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and apparatus for carbon dioxide pretreatment and accele will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1706442

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.