Scale suppression in lime/limestone FGD systems
Conference
·
· Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States)
OSTI ID:6085922
The experimental results on the oxidation of sulfite to sulfate in a simulated lime/limestone scrubber for SO/sub 2/ indicated that: (a) NO acts as an inhibitor for sulfite oxidation; (b) NO/sub 2/ acts as a promoter either catalytically or as a direct oxidant; (c) the inhibitory effect of NO is not adequate to suppress the promotive effect of NO/sub 2/ at a NO/NO/sub 2/ mole ratio of 9 and a NO/sub x/ concentration of 800 ppM (typical flue gas); (d) at a NO/NO/sub 2/ mole ratio of about 12, the oxidation is no greater than it would be without NO/sub x/ present; (e) oxidation is minimized at a NO/NO/sub 2/ mole ratio greater than about 20; and (f) scaling in scrubbers on high NO/sub x/-emitting furnaces, such as cyclones, could be significantly different from that encountered in lower temperature units. A prescrubber for NO/sub 2/ removal should be effective in inhibiting sulfite oxidation in the SO/sub 2/ scrubber. This has not been effectively demonstrated in the laboratory mainly because of an inability to analyze for NO/sub 2/ in the exit gas from the prescrubber. 4 figures, 1 table.
- Research Organization:
- Battelle Columbus Labs., OH
- OSTI ID:
- 6085922
- Report Number(s):
- CONF-790415-P4
- Conference Information:
- Journal Name: Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States) Journal Volume: 24:2
- Country of Publication:
- United States
- Language:
- English
Similar Records
Scale suppression in lime/limestone FGD systems
NOx influence on sulfite oxidation and scaling in lime/limestone flue gas desulfurization (FGD) systems
Lime/limestone scrubber modifications: investigation of thiosulfate as an oxidation/scaling inhibitor. Part I, final report (general results)
Conference
·
Wed Feb 28 23:00:00 EST 1979
· Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)
·
OSTI ID:6790236
NOx influence on sulfite oxidation and scaling in lime/limestone flue gas desulfurization (FGD) systems
Journal Article
·
Mon Mar 31 23:00:00 EST 1980
· Environ. Sci. Technol.; (United States)
·
OSTI ID:6683253
Lime/limestone scrubber modifications: investigation of thiosulfate as an oxidation/scaling inhibitor. Part I, final report (general results)
Technical Report
·
Sun Dec 13 23:00:00 EST 1981
·
OSTI ID:6794378
Related Subjects
01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
CHALCOGENIDES
CHEMICAL REACTIONS
CONCENTRATORS
CYCLONE SEPARATORS
DEPOSITS
DESULFURIZATION
EQUIPMENT
FLUE GAS
GASEOUS WASTES
INERTIAL SEPARATORS
INHIBITION
LIME-LIMESTONE WET SCRUBBING PROCESSES
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
SCRUBBING
SULFATES
SULFITES
SULFUR COMPOUNDS
WASTES
010800* -- Coal
Lignite
& Peat-- Waste Management
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
CHALCOGENIDES
CHEMICAL REACTIONS
CONCENTRATORS
CYCLONE SEPARATORS
DEPOSITS
DESULFURIZATION
EQUIPMENT
FLUE GAS
GASEOUS WASTES
INERTIAL SEPARATORS
INHIBITION
LIME-LIMESTONE WET SCRUBBING PROCESSES
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL EQUIPMENT
SCRUBBING
SULFATES
SULFITES
SULFUR COMPOUNDS
WASTES