Determination of the effects of sulfur dioxide on recovery systems for CO/sub 2/. Final report, 1977-1980
The present study was initiated to investigate the problems associated with recovery of CO/sub 2/ from flue gases for enhanced oil recovery. In particular, the scope of this work may be stated: determine the type of impurities formed in ammonia, monoethanolamine (MEA), and potassium carbonate systems when extracting CO/sub 2/ from oxidizing flue gases containing nitrogen oxides and sulfur oxides; determine the levels of impurity build-up in the solvents; estimate the impurity level in the recovered CO/sub 2/; evaluate the effect on corrosion in metals by these solvents in a flue gas environment; determine the carbon-dioxide absorption coefficients in solvents contaminated due to the pollutants present in the flue gas; evaluate the effect of particulate matter on absorption coefficients in the solvents; and recommend potential absorption systems for CO/sub 2/ from flue gas and estimate the cost of recovery. The results of this study indicate that in ammonia, ammonia sulfate is quickly formed to render that portion of the absorbent inactive. In MEA, amine sulfite and amine sulfate are the dominant impurities formed. In amine-activated potassium carbonate solutions, only sulfite and sulfate ions were found. No nitrogen-oxide species were found in any solution. The impurity levels obtained in the present experiments indicated no limit on contaminant build-up. The impurity level in the recovered CO/sub 2/ was estimated to be less than or equal to 100 ppM non-condensible gases, 20 to 200 ppM SO/sub 2/, and < 20 ppM NO/sub x. Corrosion in the absorption systems will be similar to that observed in CO/sub 2/ absorption systems from reducing gas streams. The absorption rate of CO/sub 2/ in solutions decreases with increasing loading of CO/sub 2/ in almost a linear fashion. Several alternative absorption systems were evaluated in a preliminary cost evaluation, and a K/sub 2/CO/sub 3/ (EAE activated) solution was recommended.
- Research Organization:
- West Virginia Univ., Morgantown (USA). Dept. of Chemical Engineering; Department of Energy, Morgantown, WV (USA). Morgantown Energy Technology Center
- DOE Contract Number:
- AS05-77ET12025
- OSTI ID:
- 6952219
- Report Number(s):
- DOE/MC/5532-7
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
CARBON DIOXIDE
RECOVERY
ADSORPTION
AMINES
AMMONIA
CARBON DIOXIDE INJECTION
COMPARATIVE EVALUATIONS
CORROSION
COST
ENHANCED RECOVERY
EXTRACTION
FLUE GAS
HYDROXY COMPOUNDS
IMPURITIES
NITROGEN OXIDES
PETROLEUM
POTASSIUM CARBONATES
PURIFICATION
SULFUR DIOXIDE
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBON OXIDES
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
ENERGY SOURCES
FLUID INJECTION
FOSSIL FUELS
FUELS
GASEOUS WASTES
HYDRIDES
HYDROGEN COMPOUNDS
MISCIBLE-PHASE DISPLACEMENT
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
SEPARATION PROCESSES
SORPTION
SULFUR COMPOUNDS
SULFUR OXIDES
WASTES
020300* - Petroleum- Drilling & Production
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)