Apparatus and method for maintaining multi-component sample gas constituents in vapor phase during sample extraction and cooling
A dilution apparatus for diluting a gas sample. The apparatus includes a sample gas conduit having a sample gas inlet end and a diluted sample gas outlet end, and a sample gas flow restricting orifice disposed proximate the sample gas inlet end connected with the sample gas conduit and providing fluid communication between the exterior and the interior of the sample gas conduit. A diluted sample gas conduit is provided within the sample gas conduit having a mixing end with a mixing space inlet opening disposed proximate the sample gas inlet end, thereby forming an annular space between the sample gas conduit and the diluted sample gas conduit. The mixing end of the diluted sample gas conduit is disposed at a distance from the sample gas flow restricting orifice. A dilution gas source connected with the sample gas inlet end of the sample gas conduit is provided for introducing a dilution gas into the annular space, and a filter is provided for filtering the sample gas. The apparatus is particularly suited for diluting heated sample gases containing one or more condensable components.
- Research Organization:
- Gas Technology Institute, Des Plaines, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC36-03GO13175
- Assignee:
- Gas Technology Institute (Des Plaines, IL)
- Patent Number(s):
- 7,712,384
- Application Number:
- 11/712,042
- OSTI ID:
- 1176280
- Resource Relation:
- Patent File Date: 2007 Feb 28
- Country of Publication:
- United States
- Language:
- English
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Method and apparatus for maintaining multi-component sample gas constituents in vapor phase during sample extraction and cooling
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