Sampling apparatus for real-time alkali monitor

Patent Application · Mon Feb 27 00:00:00 EST 1989

OSTI ID:6731536

French, W E; Logan, R G; Pineault, R L

This report describes a sampling apparatus which provides representatives samples of high-temperature, high-pressure coal- derived process gases for analysis of alkali concentrations in either a gaseous phase or in a particulate-bearing gaseous phase by a real-time alkali monitor. The apparatus includes a sampling probe in the form of a ceramic tube that is inserted in the stream of combustion products for gathering a representative stream of gaseous products. Critical flow orifices are connected in series between the probe and an alkali monitor burner. A valved vent line connected in-line between the critical flow orifices is used to vent a significant percentage of the flow from the first critical flow orifice device to maintain the upstream pressure required to provide the desired flow rate through the second critical orifice to the alkali monitor burner. The gaseous products in the system between the probe and the burner is heated to inhibit condensation of alkali species. 2 figs.

• Research Organization: USDOE Morgantown Energy Technology Center, WV (USA)
• Sponsoring Organization: DOE/FE
• Assignee: Dept of Energy
• Patent Number(s): PATENTS-US-A7315872
• Application Number: ON: DE90014682; PPN: US 7-315872
• OSTI ID: 6731536
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
47 OTHER INSTRUMENTATION
GASES
SAMPLING
PROBES
DESIGN
ALKALI METALS
CERAMICS
COAL GASIFICATION
COMBUSTION
FILTERS
INVENTIONS
MONITORING
ORIFICES
REAL TIME SYSTEMS
CHEMICAL REACTIONS
ELEMENTS
FLUIDS
GASIFICATION
METALS
OPENINGS
OXIDATION
THERMOCHEMICAL PROCESSES
010404* - Coal
Lignite
& Peat- Gasification
014000 - Coal
Lignite
& Peat- Combustion
440800 - Miscellaneous Instrumentation- (1990-)