Method and apparatus for analyzing gas components and apparatus for collecting sample gases
First Claim
1. An apparatus for collecting gas components comprising:
- a diffusion scrubber comprising an inner tube and an outer tube, said inner tube comprising a gas penetrating membrane through which sampling gases only may penetrate, wherein sampling gases flow through inside of said inner tube and an absorption liquid flows through between said inner and other tubes so that said absorption liquid absorbs said sampling gases penetrated through said membrane from the inside of the inner tube;
an absorption liquid feeding pump upstream from said diffusion scrubber for feeding said absorption liquid between said inner and outer tubes of said diffusion scrubber; and
at least a flow passage switch valve downstream from said diffusion scrubber, said flow passage switch valve having at least three flow passages, each of which has a port, one of said ports being coupled to said diffusion scrubber;
an absorption liquid reservoir coupled to one of said ports other than said one port coupled to said diffusion scrubber, said reservoir reserving said absorption liquid for subsequent feeding of said absorption liquid through said flow passage switch valve;
a circulation flow passage for said absorption liquid, said circulation flow passage connecting among said flow passage switch valve, said absorption liquid feeding pump and said diffusion scrubber; and
a non-circulation flow passage for said absorption liquid, said non-circulation flow passage connecting said absorption liquid reservoir through said flow passage switch valve and said absorption liquid feeding pump into said diffusion scrubber;
wherein said flow passage switch valve provides the current flow passage switch between said circulation and non-circulation flow passages.
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Accused Products
Abstract
A gas component analyzing system having a diffusion scrubber and a chromatograph wherein a flow passage switch valve and a sample injection valve are switched to form a non-circulation flow passage for feeding an absorption liquid into the diffusion scrubber so that absorption liquid captures sample gas components until the sample gas components come into an equilibrium state. Then, both the above valves are switched to form a circulation flow passage for feeding the absorption liquid into a concentration column. Then, both the above valves are further switched to form the non-circulation flow passage to elute the sample gas components for subsequent detection thereof by the chromatograph.
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Citations
25 Claims
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1. An apparatus for collecting gas components comprising:
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a diffusion scrubber comprising an inner tube and an outer tube, said inner tube comprising a gas penetrating membrane through which sampling gases only may penetrate, wherein sampling gases flow through inside of said inner tube and an absorption liquid flows through between said inner and other tubes so that said absorption liquid absorbs said sampling gases penetrated through said membrane from the inside of the inner tube; an absorption liquid feeding pump upstream from said diffusion scrubber for feeding said absorption liquid between said inner and outer tubes of said diffusion scrubber; and at least a flow passage switch valve downstream from said diffusion scrubber, said flow passage switch valve having at least three flow passages, each of which has a port, one of said ports being coupled to said diffusion scrubber; an absorption liquid reservoir coupled to one of said ports other than said one port coupled to said diffusion scrubber, said reservoir reserving said absorption liquid for subsequent feeding of said absorption liquid through said flow passage switch valve; a circulation flow passage for said absorption liquid, said circulation flow passage connecting among said flow passage switch valve, said absorption liquid feeding pump and said diffusion scrubber; and a non-circulation flow passage for said absorption liquid, said non-circulation flow passage connecting said absorption liquid reservoir through said flow passage switch valve and said absorption liquid feeding pump into said diffusion scrubber; wherein said flow passage switch valve provides the current flow passage switch between said circulation and non-circulation flow passages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for analyzing gas components comprising one or more gas collectors and a gas analyzer:
said gas collector comprising; a diffusion scrubber comprising an inner tube and an outer tube, said inner tube comprising a gas penetrating membrane through which sampling gases only may penetrate, wherein sampling gases flow through inside of said inner tube and an absorption liquid flows through between said inner and outer tubes so that said absorption liquid absorbs said sampling gases penetrated through said membrane from the inside of the inner tube; an absorption liquid feeding pump upstream from said diffusion scrubber for feeding said absorption liquid between said inner and outer tubes of said diffusion scrubber; and at least a flow passage switch valve downstream from said diffusion scrubber, said flow passage switch valve having at least three flow passages, each of which has a port, one of said ports being coupled to said diffusion scrubber; an absorption liquid reservoir coupled to one of said ports other than said one port coupled to said diffusion scrubber, said reservoir reserving said absorption liquid for subsequent feeding of said absorption liquid through said flow passage switch valve; a circulation flow passage for said absorption liquid, said circulation flow passage connecting among said flow passage switch valve, said absorption liquid feeding pump and said diffusion scrubber; and a non-circulation flow passage for said absorption liquid, said non-circulation flow passage connecting said absorption liquid reservoir through said flow passage switch valve and said absorption liquid feeding pump into said diffusion scrubber; a sample injection valve between upstream of said diffusion scrubber and downstream of said absorption liquid feeding pump, said sample injection valve comprising at least six flow passages, each of which has a port; and a concentration column connected to said sample injection valve through different ports from said ports used for coupling between said diffusion scrubber and said absorption liquid feeding pump; wherein said flow passage switch valve provides the current flow passage switch between said circulation and non-circulation flow passages; and said gas analyzer comprising; an eluate reservoir for reserving an eluate to be used for eluting sampling gas components for subsequent analysis thereof; an eluate pump between said sample injection valve and said eluate reservoir for feeding said eluate from said eluate reservoir into said sample injection valve, said eluate pump being coupled to a port of said sample injection valve other than the ports coupled to said diffusion scrubber and said concentration column respectively; a detector for detecting gas components eluted in said elution, said detector being coupled to said sample injection valve through a different port of said valve from said ports respectively coupled to said diffusion scrubber, said concentration column and said elution reservoir so as to form a gas analyzer flow passage connecting said eluate reservoir through said eluate pump and said sample injection valve into said detector; wherein said sample injection valve switches between two different flow passages, in one flow passage said concentration column is incorporated into an absorption liquid flow passage system, in another flow passage said concentration column is separated from said absorption liquid flow passage system. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
Specification