Apparatus for treating cement kiln dust

Patent · Tue Apr 22 00:00:00 EST 1986

OSTI ID:5814652

Galli, R

An apparatus is described for treating cement kiln dust comprising an elongate reaction chamber, kiln dust entry means in the reaction chamber, atomized-spray nozzles in the reaction chamber for introducing atomized spray to kiln dust, separate conduits for liquid and gas separately connected to the atomized-spray nozzles for atomizing liquid by gas to form a fog of the liquid in an atmosphere of the gas, mixing means in the reaction chamber for mixing the kiln dust in contact with the fog and gaseous atmosphere of the reaction chamber, discharge means at one end of the reaction chamber for discharging the mixed and contacted kiln dust product from the reaction chamber. The kiln dust entry means are located in an upper region of the reaction chamber for depositing kiln dust gravitationally to a lower region of the reaction chamber. The atomized-spray nozzles are located in the upper region of the reaction chamber for depositing fog on kiln dust during mixing thereof, gas entry means on the reaction chamber for delivering gas to the reaction chamber for reaction with kiln dust and fog, gas exit means on the reaction chamber for discharging gas products from the reaction chamber. The gas entry and exit means are at opposite ends of the reaction chamber, and pre-entry liquid atomizing spray means in the gas entry means for treating gas by atomized liquid spray to effectively saturate the gas before delivery to the reaction chamber.

• Assignee: NOV; EDB-86-110151
• Patent Number(s): US 4584179
• OSTI ID: 5814652
• Resource Relation: Patent File Date: Filed date 18 May 1984
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
54 ENVIRONMENTAL SCIENCES
DUSTS
AIR POLLUTION ABATEMENT
MIXING
KILNS
ATOMIZATION
FLUE GAS
GRAVITATION
LIQUIDS
NOZZLES
SATURATION
SPRAYS
FLUIDS
GASEOUS WASTES
POLLUTION ABATEMENT
WASTES
421000* - Engineering- Combustion Systems
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)