Gas cleaning methods and apparatus

Patent · Tue Dec 31 04:00:00 EST 1991

OSTI ID:5405942

Jonsson, K A

This patent describes the method of separating and removing particulate material and oxides of sulfur and nitrogen from stack gases which comprises the steps of flowing the gases through an array of rotating separating wheels in a gas flow duct while delivering water spray into the flowing gases in the wheel array, the combination of the steps of establishing and maintaining liquid reservoirs within the wheel array, and substantially uniformly discharging accumulated liquid from the reservoirs radially outwardly across the rotating separating wheels. This patent also describes a gas cleaning apparatus effective to extract and remove particulate material, moisture and oxides of sulphur and nitrogen from stack gases, including a generally cylindrical housing having inlet and outlet ports, a separating device rotatably mounted in the housing comprising a plurality of air purification wheels of which has a hub and a plurality of air purification wheels each of which has a hub and a plurality of spaced radially-extending spokes secured to the hub, in combination a liquid spray delivery means including a conduit having atomizing discharge ports adjacent to the wheels and liquid recirculation means including a spray drain collection vessel and a pump connected to the conduit to transfer liquid contents of the vessel to the conduit, and liquid spray pH control means comprising a pH sensor disposed for contact with the recirculating liquid.

• Assignee: NOV; EDB-92-090663; NOV-92-023031
• Patent Number(s): A; US 5076818
• Application Number: PPN: US 7-545383
• OSTI ID: 5405942
• Country of Publication: United States
• Language: English

Related Subjects

440800 -- Miscellaneous Instrumentation-- (1990-)
47 OTHER INSTRUMENTATION
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ATOMIZATION
CHALCOGENIDES
CLEANING
DUCTS
FLUID FLOW
FLUIDS
GAS FLOW
GASES
HYDROGEN COMPOUNDS
MOISTURE
MOTION
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
PH VALUE
REMOVAL
ROTATION
SEPARATION EQUIPMENT
SPRAYS
STACKS
SULFUR COMPOUNDS
SULFUR OXIDES
WATER
WHEELS