US4367645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot gas sampling
Assignee: Technip USA Corp
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Filing: 1980-12-03
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Granted: 1983-01-11
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Expires: 2000-12-03
Abstract
Abstract Apparatus and method are provided to achieve efficient on-line sampling of hot effluent gases from high temperature reactors. A heated transfer valve is movable between sampling and injection positions to control carrier gas and sample gas flow to a chromatograph.
Inventors
- 👤 Gilbert F. Froment
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:26
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/04; G01N30/16; G01N30/20; G01N30/88; G01N2030/8886
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
277 words
An apparatus for sampling a stream of hot gas containing hydrocarbons, and employing a heated transfer valve, a source of carrier gas for sampling and diluting the hot gas and transferring it over a hot capillary coated pre-separation column to analytical equipment, a gas splitter and a gas receiver, the improvement comprising (a) said transfer valve being heated and having multiple inlet ports and multiple outlet ports, (b) there being a sample receiving duct in communication with said valve, (c) said valve having relatively movable members defining a sampling position, and an injection position, (d) said sampling position characterized in that one inlet port, the sample receiving duct and one outlet port are connected in series to pass said hot gas to said receiver, and other inlet and outlet ports are connected in series to pass the carrier gas to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (e) said injection position characterized in that said one inlet port and said one outlet port are connected in series to pass said hot gas to the receiver, and said other inlet port, said sample receiving duct and said other outlet port are connected in series with said source of carrier gas to pass a sample of hot gas in said duct to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (f) a gas chromatograph connected in series with the splitter to receive a portion of the hot gas sample from the splitter, and (g) a side passage connected with the splitter to pass split carrier gas toward a flow controller.
Claim 2
Independent Claim
277 words
An apparatus for sampling a stream of hot gas containing hydrocarbons, and employing a heated transfer valve, a source of carrier gas for sampling and diluting the hot gas and transferring it over a hot capillary coated pre-separation column to analytical equipment, a gas splitter and a gas receiver, the improvement comprising (a) said transfer valve being heated and having multiple inlet ports and multiple outlet ports, (b) there being a sample receiving duct in communication with said valve, (c) said valve having relatively movable members defining a sampling position, and an injection position, (d) said sampling position characterized in that one inlet port, the sample receiving duct and one outlet port are connected in series to pass said hot gas to said receiver, and other inlet and outlet ports are connected in series to pass the carrier gas to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (e) said injection position characterized in that said one inlet port and said one outlet port are connected in series to pass said hot gas to the receiver, and said other inlet port, said sample receiving duct and said other outlet port are connected in series with said source of carrier gas to pass a sample of hot gas in said duct to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (f) a gas chromatograph connected in series with the splitter to receive a portion of the hot gas sample from the splitter, and (g) a side passage connected with the splitter to pass split carrier gas toward a flow controller.
Claim 3
Dependent Claim
27 words
The apparatus of claim 1 including a gas chromatograph connected in series with the splitter to receive a portion of the hot gas sample from the splitter.
Claim 4
Dependent Claim
23 words
The apparatus of claim 1 including a heated chamber or box or container means in which said valve and said splitter are received.
Claim 5
Dependent Claim
23 words
The apparatus of claim 3 including means to maintain the interior of said chamber or box or container means at about 300° C.
Claim 6
Dependent Claim
16 words
The apparatus of claim 1 including a cyclone connected in series with said one inlet port.
Claim 7
Dependent Claim
27 words
The apparatus of claim 1 including said hot gas to be sampled in said duct, and consisting of hydrocarbons, H 2 O, hydrogen or other chemical compounds.
Claim 8
Dependent Claim
45 words
The apparatus of claim 1 wherein said transfer valve has two additional ports connected with said duct, whereby the valve has six ports, the valve also having three internal passages respectively connected with pairs of said ports in each of said sampling and injection positions.
Claim 9
Independent Claim
293 words
An apparatus for sampling a stream of hot gas containing hydrocarbons, and employing a heated transfer valve, a source of carrier gas for sampling and diluting the hot gas and transferring it over a hot capillary coated pre-separation column to analytical equipment, a gas splitter and a gas receiver, the improvement comprising (a) said transfer valve being heated and having multiple inlet ports and multiple outlet ports, (b) there being a sample receiving duct in communication with said valve, (c) said valve having relatively movable members defining a sampling position, and an injection position, (d) said sampling position characterized in that one inlet port, the sample receiving duct and one outlet port are connected in series to pass said hot gas to said receiver, and other inlet and outlet ports are connected in series to pass the carrier gas to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (e) said injection position characterized in that said one inlet port and said one outlet port are connected in series to pass said hot gas to the receiver, and said other inlet port, said sample receiving duct and said other outlet port are connected in series with said source of carrier gas to pass a sample of hot gas in said duct to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (f) a gas chromatograph connected in series with the splitter to receive a portion of the hot gas sample from the splitter, (g) and including a side passage connected with the splitter to pass split carrier gas toward a flow controller after removal of another portion of the sample by means of an active charcoal filter.
Claim 10
Independent Claim
293 words
An apparatus for sampling a stream of hot gas containing hydrocarbons, and employing a heated transfer valve, a source of carrier gas for sampling and diluting the hot gas and transferring it over a hot capillary coated pre-separation column to analytical equipment, a gas splitter and a gas receiver, the improvement comprising (a) said transfer valve being heated and having multiple inlet ports and multiple outlet ports, (b) there being a sample receiving duct in communication with said valve, (c) said valve having relatively movable members defining a sampling position, and an injection position, (d) said sampling position characterized in that one inlet port, the sample receiving duct and one outlet port are connected in series to pass said hot gas to said receiver, and other inlet and outlet ports are connected in series to pass the carrier gas to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (e) said injection position characterized in that said one inlet port and said one outlet port are connected in series to pass said hot gas to the receiver, and said other inlet port, said sample receiving duct and said other outlet port are connected in series with said source of carrier gas to pass a sample of hot gas in said duct to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (f) a gas chromatograph connected in series with the splitter to receive a portion of the hot gas sample from the splitter, (g) and including a side passage connected with the splitter to pass split carrier gas toward a flow controller after removal of another portion of the sample by means of an active charcoal filter.
Claim 11
Dependent Claim
46 words
The apparatus of claim 8 including said flow controller associated with said gas chromatograph and which has a capillary coated pre-separation column via which a small fraction of the sample gas is delivered to the gas chromatograph at a predetermined flow rate controlled by the controller.
Claim 12
Independent Claim
285 words
An apparatus for sampling a stream of hot gas containing hydrocarbons, and employing a heated transfer valve, a source of carrier gas for sampling and diluting the hot gas and transferring it over a hot capillary coated pre-separation column to analytical equipment, a gas splitter and a gas receiver, the improvement comprising (a) said transfer valve being heated and having multiple inlet ports and multiple outlet ports, (b) there being a sample receiving duct in communication with said valve, (c) said valve having relatively movable members defining a sampling position, and an injection position, (d) said sampling position characterized in that one inlet port, the sample receiving duct and one outlet port are connected in series to pass said hot gas to said receiver, and other inlet and outlet ports are connected in series to pass the carrier gas to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (e) said injection position characterized in that said one inlet port and said one outlet port are connected in series to pass said hot gas to the receiver, and said other inlet port, said sample receiving duct and said other outlet port are connected in series with said source of carrier gas to pass a sample of hot gas in said duct to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (f) a heated chamber or box or container means in which said valve and said splitter are received, said receiver comprising a liquid containing vessel into which the discharge from said one outlet port is connected, said vessel located outside said heated chamber or box or container means.
Claim 13
Independent Claim
285 words
An apparatus for sampling a stream of hot gas containing hydrocarbons, and employing a heated transfer valve, a source of carrier gas for sampling and diluting the hot gas and transferring it over a hot capillary coated pre-separation column to analytical equipment, a gas splitter and a gas receiver, the improvement comprising (a) said transfer valve being heated and having multiple inlet ports and multiple outlet ports, (b) there being a sample receiving duct in communication with said valve, (c) said valve having relatively movable members defining a sampling position, and an injection position, (d) said sampling position characterized in that one inlet port, the sample receiving duct and one outlet port are connected in series to pass said hot gas to said receiver, and other inlet and outlet ports are connected in series to pass the carrier gas to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (e) said injection position characterized in that said one inlet port and said one outlet port are connected in series to pass said hot gas to the receiver, and said other inlet port, said sample receiving duct and said other outlet port are connected in series with said source of carrier gas to pass a sample of hot gas in said duct to the analytical equipment through the splitter and a hot line which is a pre-separation coated capillary column, (f) a heated chamber or box or container means in which said valve and said splitter are received, said receiver comprising a liquid containing vessel into which the discharge from said one outlet port is connected, said vessel located outside said heated chamber or box or container means.
Claim 14
Dependent Claim
171 words
In a process for sampling a stream of hot gas containing hydrocarbons having 1-20 carbon atoms, and employing a transfer valve, that includes (a) maintaining said valve at elevated temperature, (b) passing a sample of the hot gas stream via the valve into a sampling duct communicating with the valve, (c) passing a carrier gas through a channel in the valve, (d) switching the valve to cause the carrier gas to entrain the sample in said duct, (e) splitting the carrier gas and/or entrained sample into two streams while both are maintained at elevated temperature, and (f) passing one of the streams to an analytical equipment strongly diluted by the carrier gas through a pre-separation capillary coated gas chromatograph column kept at a temperature of at least 200° C., and (g) passing the effluent of said column into a gas chromatograph for further separation and determination of the gas composition, by itself or in connection with a mass spectrometer, (g) and passing the other of said streams toward a flow controller.
Claim 15
Dependent Claim
171 words
In a process for sampling a stream of hot gas containing hydrocarbons having 1-20 carbon atoms, and employing a transfer valve, that includes (a) maintaining said valve at elevated temperature, (b) passing a sample of the hot gas stream via the valve into a sampling duct communicating with the valve, (c) passing a carrier gas through a channel in the valve, (d) switching the valve to cause the carrier gas to entrain the sample in said duct, (e) splitting the carrier gas and/or entrained sample into two streams while both are maintained at elevated temperature, and (f) passing one of the streams to an analytical equipment strongly diluted by the carrier gas through a pre-separation capillary coated gas chromatograph column kept at a temperature of at least 200° C., and (g) passing the effluent of said column into a gas chromatograph for further separation and determination of the gas composition, by itself or in connection with a mass spectrometer, (g) and passing the other of said streams toward a flow controller.
Claim 16
Dependent Claim
24 words
The method of claim 11 including passing the other of the split streams to a control which controls the ratio of the two streams.
Claim 17
Dependent Claim
21 words
The method of claim 11 including providing a heated chamber containing said zone, and carrying out said splitting in said chamber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-10 | 1986-07-12 | 1987-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-10 | 1990-07-12 | 1991-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-10 | 1994-07-12 | 1995-01-11 | $7700.00 | Window Closed / Lapsed |