Solid handling valve

Patent · 31 December 1978

OSTI ID:863445

Williams, William R ^[1]

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1. Morgantown, WV

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.

• Research Organization: National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4173327
• OSTI ID: 863445
• Country of Publication: United States
• Language: English

Related Subjects

/251/
abrasion
associated
coal
coal gas
coal gasifier
combination
comprises
control
conveying
corrosion
directed
disposed
erosion
expandable
failure
flow
flow control
fluid-actuated
gases
gasification
gasification process
gasifier
handling
handling valve
highly
hoppers
housing
liquids
lock
minimize
piston
primary
process
provided
pulverized
pulverized coal
radially
radially expand
recessed
resistive
seal
seals
seat
secondary
secondary seal
solid
solids
tapered
utilized
valve
valve comprises
valve seal