Apparatus and method for direct measurement of coal ash sintering and fusion properties at elevated temperatures and pressures

Patent · Mon Jan 01 00:00:00 EST 1990

OSTI ID:867634

Khan, M Rashid ^[1]

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1. Morgantown, WV

A high-pressure microdilatometer is provided for measuring the sintering and fusion properties of various coal ashes under the influence of elevated pressures and temperatures in various atmospheres. Electrical resistivity measurements across a sample of coal ash provide a measurement of the onset of the sintering and fusion of the ash particulates while the contraction of the sample during sintering is measured with a linear variable displacement transducer for detecting the initiation of sintering. These measurements of sintering in coal ash at different pressures provide a mechanism by which deleterious problems due to the sintering and fusion of ash in various combustion systems can be minimized or obviated.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4976549
• OSTI ID: 867634
• Country of Publication: United States
• Language: English

Related Subjects

apparatus
method
direct
measurement
coal
ash
sintering
fusion
properties
elevated
temperatures
pressures
high-pressure
microdilatometer
provided
measuring
various
ashes
influence
atmospheres
electrical
resistivity
measurements
sample
provide
onset
particulates
contraction
measured
linear
variable
displacement
transducer
detecting
initiation
mechanism
deleterious
due
combustion
systems
minimized
obviated
direct measurement
combustion systems
coal ash
elevated temperatures
elevated temperature
electrical resistivity
elevated pressure
linear variable
resistivity measurements
variable displacement
direct measure
displacement transducer
various coal
fusion properties
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