Laboratory/bench scale testing and evaluation of A. P. T. Dry Plate Scrubber

Technical Report · Mon Jul 01 04:00:00 EDT 1985

OSTI ID:5750756

Jain, R C; Young, S C

The A.P.T. Dry Plate Scrubber (DPS) was developed for the simultaneous removal of particles and alkali vapors from high temperature and high pressure gas streams. The DPS uses a shallow, dense, mobile bed of solid collector granules supported on perforated plates. The gas stream containing fine particles and vapors is moved upward through the perforations to form high velocity gas jets. Fine particles are removed by inertial deposition on granules. Alkali vapors are removed by sorption on granular sorbents. Bench scale experiments were performed under ambient conditions, on a slip stream of flue gas from an atmospheric fluidized bed combustor,and on simulated high temperature and pressure gas streams to obtain design information and to determine its particle and alkali vapor collection efficiency. Results clearly show that the DPS is capable of removing particles and alkali vapor under high temperature conditions. The DPS particle collection efficiency can be improved by precharging the particles and by polarizing the granules with an electric field. The particle collection efficiency of an electrostatically augmented DPS exceeds 98%, which is enough for cleaning the PFBC gas stream to meet the GE turbine tolerance and EPA NSPS emission regulations. Bench scale alkali vapor collection experiments identified diatomaceous earth and activated bauxite as the two most promising sorbents. At a contact time of 0.2 seconds, these two sorbents can remove 99% of the alkali vapor. A preliminary process design and cost estimate was performed based on the requirements of one PFBC combustor-turbine module. 34 refs., 91 figs., 21 tabs.

• Research Organization: Air Pollution Technology, Inc., San Diego, CA (USA)
• DOE Contract Number: AC21-80ET15492
• OSTI ID: 5750756
• Report Number(s): DOE/ET/15492-2030; ON: DE86001075
• Country of Publication: United States
• Language: English

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20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
ALKALI METAL COMPOUNDS
ALKALI METALS
ALUMINIUM ORES
BAUXITE
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTION PRODUCTS
COMBUSTORS
CONCENTRATORS
CORROSION
CYCLONE SEPARATORS
DATA
DECOMPOSITION
DIATOMACEOUS EARTH
DISTRIBUTION
DRY SCRUBBERS
ELECTROSTATICS
ELEMENTS
EMISSION
ENERGY SOURCES
EQUIPMENT
EROSION
EVAPORATION
EXPERIMENTAL DATA
FLUE GAS
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FLUIDS
FOSSIL FUELS
FUELS
GAS TURBINES
GASEOUS WASTES
GASES
HOT GAS CLEANUP
INERTIAL SEPARATORS
INFORMATION
MACHINERY
MATERIALS
METALS
NUMERICAL DATA
ORES
OXIDATION
PARTICLE SIZE
PARTICLES
PARTICULATES
PERFORMANCE TESTING
PHASE TRANSFORMATIONS
POLLUTION CONTROL EQUIPMENT
PRESSURE DROP
PURIFICATION
REMOVAL
SCRUBBERS
SEPARATION EQUIPMENT
SIZE
TESTING
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
VAPORS
WASTES