System for retrieving a gas phase sample from a gas stream containing entrained liquid, and sample conditioner assembly therefore
DCFirst Claim
1. A method of conditioning a sample of gas derived from a fluid stream, comprising the steps of:
- a. providing a fluid conduit having first and second ends, said first end of said fluid conduit communicating with said fluid stream;
b. providing an insertion assembly comprising a phase separation membrane having first and second sides;
c. providing a housing in communication with said fluid stream, said housing configured to receive said insertion assembly;
d. inserting said insertion assembly into said housing;
e. directing said sample of gas having liquid entrained therein to communicate with said phase separation membrane;
f. allowing the passage of gas from said sample of gas through said phase separation membrane, providing filtered gas, while preventing the passage of entrained liquid from said sample of gas and coalescing said entrained liquid from said sample of gas.
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Abstract
A system for the retrieval and initial conditioning of sample gas for “on line” analyzers or filling of gas sample cylinders. The preferred embodiment of the present invention contemplates a system configured to obtain a representative gas phase sample from a process gas containing entrained liquid, or a process gas which generally is highly susceptible to partial condensation of some gas phase components. The preferred embodiment of the present invention teaches an assembly including a phase separation membrane and housing configured to facilitate the removal of entrained liquid from a sample gas stream. Accuracy of the sample is enhanced, and compositional changes are avoided by first extracting a sample from the process gas followed by removal of entrained liquid it may contain, with the entrained liquid removal being conducted at the prevailing process gas pressure and temperature. Thereafter the liquid free sample may be desaturated by lowering its pressure to reduce its susceptibility to condensation.
20 Citations
9 Claims
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1. A method of conditioning a sample of gas derived from a fluid stream, comprising the steps of:
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a. providing a fluid conduit having first and second ends, said first end of said fluid conduit communicating with said fluid stream;
b. providing an insertion assembly comprising a phase separation membrane having first and second sides;
c. providing a housing in communication with said fluid stream, said housing configured to receive said insertion assembly;
d. inserting said insertion assembly into said housing;
e. directing said sample of gas having liquid entrained therein to communicate with said phase separation membrane;
f. allowing the passage of gas from said sample of gas through said phase separation membrane, providing filtered gas, while preventing the passage of entrained liquid from said sample of gas and coalescing said entrained liquid from said sample of gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification