US3880587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for total analysis of hydrocarbon samples
Assignee: Shell USA Inc
•
Filing: 1974-04-01
•
Granted: 1975-04-29
•
Expires: 1994-04-01
Abstract
Abstract An apparatus and method for analyzing hydrocarbon samples utilizing a GLC column in combination with an oxidizing furnace and two detectors. The column is heated at a programmed rate to analyze the volatile components of the sample plus the sulphur content of the volatiles while the carbon and sulphur content of the non-volatile components are obtained by oxidizing them in the injection port and passing the oxidation products to the detectors.
Inventors
- 👤 Julius J Szakasits
- 👤 Alfred E Krc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:49
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/005; G01N30/00; G01N30/02; G01N30/26; G01N30/28; G01N30/30; G01N30/62; G01N30/78; Y; Y10; Y10T; Y10T436/00; Y10T436/18; Y10T436/188; Y10T436/23
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
201 words
A GLC apparatus for analyzing a hydrocarbOn sample for volatile, non-volatile and sulfur components, comprising: a GLC column having an injection port, outlet and valve means for controlling the flow of sample and carrier gas through said column; a first heater means disposed to heat said column; a second heater means disposed to heat said injection port; a furnace coupled to said outlet of said column by means of said valve means and disposed to oxidize the material eluted from said column; a backflush furnace coupled to the injection port of said column by said valve means and disposed to oxidize the material eluted from the column and material remaining in the injection port when the forward flow through the column is reversed; a source of oxygen, said source being disposed to be supplied continuously to said furnace and to said injection port when the flow through said column is reversed; a non-dispersive infrared detector having an inlet and discharge, both said furnace and backflush furnace being coupled to the inlet of said infrared detector; and a flame photometric detector having an inlet and discharge, the discharge of said infrared detector being coupled to the inlet of said flame photometric detector.
Claim 2
Dependent Claim
201 words
A GLC apparatus for analyzing a hydrocarbOn sample for volatile, non-volatile and sulfur components, comprising: a GLC column having an injection port, outlet and valve means for controlling the flow of sample and carrier gas through said column; a first heater means disposed to heat said column; a second heater means disposed to heat said injection port; a furnace coupled to said outlet of said column by means of said valve means and disposed to oxidize the material eluted from said column; a backflush furnace coupled to the injection port of said column by said valve means and disposed to oxidize the material eluted from the column and material remaining in the injection port when the forward flow through the column is reversed; a source of oxygen, said source being disposed to be supplied continuously to said furnace and to said injection port when the flow through said column is reversed; a non-dispersive infrared detector having an inlet and discharge, both said furnace and backflush furnace being coupled to the inlet of said infrared detector; and a flame photometric detector having an inlet and discharge, the discharge of said infrared detector being coupled to the inlet of said flame photometric detector.
Claim 3
Dependent Claim
36 words
The apparatus of claim 1 and in addition a controller, said controller being coupled to said first and second heaters, said furnace and backflush furnace and said valve means to control the operation of said apparatus.
Claim 4
Dependent Claim
22 words
The apparatus of claim 2 wherein the cycle of said controller may be varied to vary the operating conditions of said apparatus.
Claim 5
Dependent Claim
54 words
The apparatus of claim 2 wherein said controller comprises a plurality of digital counters and a source of pulses, all of said counters being coupled to said source of pulses, said counters producing an output signal when a preset count is accumulated, said output signal being used to control the operation of the apparatus.
Claim 6
Independent Claim
138 words
A METHOD FOR ANALYZING A WIDE BOILING POINT RANGE SAMPLE TO DISTINGUISH IT FROM ALL OTHER SAMPLES COMPRISING: HEATING THE SAMPLE TO AT LEAST 300 C TO REMOVE THE VOLATILES FROM THE SAMPLE; PASSING THE VOLATILIZED MATERIAL THROUGH A GLC COLUMN; OXIDIZING THE EFFLUENT FROM THE GLC COLUMN; MEASURING THE CARBON CONTENT OF THE OXIDIZED SAMPLE AND RECORDING THE MEASUREMENT WITH RESPECT TO TIME; MEASURING THE SULPHUR CONTENT OF THE OXIDIZED SAMPLE AND SEPARATELY RECORDING THE MEASUREMENT; BACKFLUSHING THE GLC COLUMN TO REMOVE THE REMAINING VOLATILES AND NON-VOLATILIZED MATERIAL; AND INJECTION PORT; INCREASING THE INJECTION PORT TEMPERATURE TO 700 C AND ADDING OXYGEN DURING THE BACKFLUSING TO OXIDIZE THE REMOVED NON-VOLATILIZED MATERIAL; HEATING THE VOLATILES AND NON-VOLATILES REMOVED BY BACKFLUSHING TO AT LEAST 930 C TO OXIDIZE THE HEATED SAMPLE; AND REPEATING THE CARBON AND SULPHUR MEASURING STEPS.
Claim 7
Independent Claim
138 words
A METHOD FOR ANALYZING A WIDE BOILING POINT RANGE SAMPLE TO DISTINGUISH IT FROM ALL OTHER SAMPLES COMPRISING: HEATING THE SAMPLE TO AT LEAST 300 C TO REMOVE THE VOLATILES FROM THE SAMPLE; PASSING THE VOLATILIZED MATERIAL THROUGH A GLC COLUMN; OXIDIZING THE EFFLUENT FROM THE GLC COLUMN; MEASURING THE CARBON CONTENT OF THE OXIDIZED SAMPLE AND RECORDING THE MEASUREMENT WITH RESPECT TO TIME; MEASURING THE SULPHUR CONTENT OF THE OXIDIZED SAMPLE AND SEPARATELY RECORDING THE MEASUREMENT; BACKFLUSHING THE GLC COLUMN TO REMOVE THE REMAINING VOLATILES AND NON-VOLATILIZED MATERIAL; AND INJECTION PORT; INCREASING THE INJECTION PORT TEMPERATURE TO 700 C AND ADDING OXYGEN DURING THE BACKFLUSING TO OXIDIZE THE REMOVED NON-VOLATILIZED MATERIAL; HEATING THE VOLATILES AND NON-VOLATILES REMOVED BY BACKFLUSHING TO AT LEAST 930 C TO OXIDIZE THE HEATED SAMPLE; AND REPEATING THE CARBON AND SULPHUR MEASURING STEPS.
Claim 8
Dependent Claim
21 words
The method of claim 5 wherein the recording of the carbon and sulphur content are displayed on single set of coordinates.
Claim 9
Dependent Claim
60 words
A method for determining the weathering of a hydrocarbon sample utilizing the method of claim 6 by unweathered measuring the carbon and sulphur content of an unweather sample of the hydrocarbon and second, measuring the carbon and sulphur content of the weathered sample and then comparing the measurements to determine the amount of hydrocarbon lost as a result of weathering.
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) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |