Solid handling valve. [DOE Patent]

Patent · Tue Nov 06 00:00:00 EST 1979

OSTI ID:5531993

Williams, W R

The present invention is directed to a solids handling valve for use in combination with lock hoppers utilized for conveying pulverized coal to a coal gasifier. The valve comprises a fluid-actuated flow control piston disposed within a housing and provided with a tapered primary seal having a recessed seat on the housing and a radially expandable fluid-actuated secondary seal. The valve seals are highly resistive to corrosion, erosion and abrasion by the solids, liquids, and gases associated with the gasification process so as to minimize valve failure.

• Assignee: Dept. of Energy
• Patent Number(s): US 4173327
• OSTI ID: 5531993
• Resource Relation: Patent File Date: Filed date 1 Jun 1977; Other Information: PAT-APPL-802,328
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL GASIFICATION PLANTS
VALVES
SEALS
ABRASION
COAL GASIFICATION
CORROSION RESISTANCE
EROSION
FUEL FEEDING SYSTEMS
HOPPERS
CONTAINERS
CONTROL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
FUEL SYSTEMS
GASIFICATION
INDUSTRIAL PLANTS
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification