Long duration ash probe

Patent · Sat Jan 01 04:00:00 EST 1994

OSTI ID:869401

Hurley, John P ^[1]; McCollor, Don P ^[1]; Selle, Stanley J ^[2]

---

1. Grand Forks, ND
2. Grand Forks, MN

A long duration ash probe includes a pressure shell connected to a port in a combustor with a sample coupon mounted on a retractable carriage so as to retract the sample coupon within the pressure shell during sootblowing operation of the combustor. A valve mounted at the forward end of the pressure shell is selectively closeable to seal the sample coupon within the shell, and a heating element in the shell is operable to maintain the desired temperature of the sample coupon while retracted within the shell. The carriage is operably mounted on a pair of rails within the shell for longitudinal movement within the shell. A hollow carrier tube connects the hollow cylindrical sample coupon to the carriage, and extends through the carriage and out the rearward end thereof. Air lines are connected to the rearward end of the carrier tube and are operable to permit coolant to pass through the air lines and thence through the carrier tube to the sample coupon so as to cool the sample coupon.

• Research Organization: University of North Dakota
• DOE Contract Number: FC21-86MC10637
• Assignee: Energy & Environmental Research Center Foundation (Grand Forks, ND)
• Patent Number(s): US 5331846
• OSTI ID: 869401
• Country of Publication: United States
• Language: English

Related Subjects

/73/
air
ash
ash probe
carriage
carrier
closeable
combustor
connected
connects
cool
coolant
coupon
cylindrical
desired
desired temperature
duration
duration ash
element
extends
forward
heating
heating element
hollow
hollow cylindrical
lines
longitudinal
longitudinal movement
maintain
mounted
movement
operable
operably
operation
pair
pass
permit
pressure
pressure shell
probe
rails
rearward
retract
retractable
retracted
sample
sample coupon
seal
selectively
shell
shell connected
sootblowing
temperature
thence
tube
valve
valve mounted