The use of molten salts in emission control
The use of molten salts in emission control was studied with a stainless steel salt bath scrubber or incinerator containing alkali sulfates, with lithium sulfate added to form a melt at 840/sup 0/F and to inhibit the adsorption of water under ambient conditions. The system removed submicron particulates with 2.5 by wt of the liquid required in a water scrubber and rapidly ignited unburned organic substances at lower than expected temperatures. Sulfur dioxide reacted with calcium oxide in a molten salt in milliseconds to reduce the sulfur dioxide content from 4700 ppm to 3 ppm. Aluminum oxide may be a good scrubbing agent for sulfur dioxide because of the value of the resulting aluminum sulfate. Ionic salts are also suitable for use in heat exchangers and heating systems because they have heat capacities 4-5 times that of iron; a heating system to deliver heat to water with a fuel efficiency of 94Vertical Bar3< is possible. Molten caustics are suggested for neutralizing halogens and hydrogen halides more efficiently than caustic-laden water scrubbers. The salts may also be used for economically incinerating chlorinated organics.
- Research Organization:
- APS Inc.
- OSTI ID:
- 6725620
- Report Number(s):
- CONF-790634-
- Journal Information:
- Proc., Annu. Meet., Air Pollut. Control Assoc.; (United States), Journal Name: Proc., Annu. Meet., Air Pollut. Control Assoc.; (United States) Vol. 79-10.4; ISSN PRAPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020800* -- Petroleum-- Waste Management
AIR POLLUTION CONTROL
ALKALI METALS
CHEMICAL REACTIONS
CONTROL
DESULFURIZATION
ELEMENTS
EQUIPMENT
FLUE GAS
GASEOUS WASTES
HIGH TEMPERATURE
INCINERATORS
METALS
MOLTEN SALTS
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PERFORMANCE
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
REMOVAL
SALTS
SCRUBBERS
SULFATES
SULFUR COMPOUNDS
WASTES