GB1043057A - Rapid carbon determination - Google Patents
Rapid carbon determinationInfo
- Publication number
- GB1043057A GB1043057A GB50758/64A GB5075864A GB1043057A GB 1043057 A GB1043057 A GB 1043057A GB 50758/64 A GB50758/64 A GB 50758/64A GB 5075864 A GB5075864 A GB 5075864A GB 1043057 A GB1043057 A GB 1043057A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- oxygen
- carbon dioxide
- piston
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
- G01N27/18—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested
- G01N27/185—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by changes in the thermal conductivity of a surrounding material to be tested using a catharometer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/205—Metals in liquid state, e.g. molten metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/23—Carbon containing
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Immunology (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Molecular Biology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
1, 043, 057. Determination of carbon. LABORATORY EQUIPMENT CORPORATION. Dec. 14, 1964 [Jan. 9, 1964], No. 50758/64. Heading B1X. [Also in Division G1] Carbon in an oxidizable material is determined by burning a sample of the material in oxygen, transporting the gaseous products of combustion mixed with excess oxygen through a purifying train for removing from the mixture components other than carbon oxides and oxygen and for converting carbon monoxide to carbon dioxide, and therefrom into the lower end of an analyses chamber beneath a vertically displaceable wall to raise the wall off the bottom of the chamber, collecting a predetermined volume of the carbon dioxide/ oxygen mixture below the raised wall at predetermined pressure and temperature and determining the carbon dioxide content of that volume of the mixture. The apparatus comprises a vertical tubular analysis chamber having therein a close fitting freely movable piston adapted to float on a column of gas within the chamber, an inlet to the chamber below the lowest position of the piston, a combustion chamber having an entry for the supply of oxygen thereto and an outlet for the products of combustion, between the outlets from the combustion chamber and the entry to the analysis chamber a purifying train, means for determining when the piston has risen to a predetermined height and means for sensing the carbon dioxide content of the gaseous mixture below the piston at that height. In the embodiment described in relation to the drawings, the sample (which may be steel, iron or other metal, coal, oil or carbides) is burnt in induction furnace 42 in a stream of oxygen from source 12. The analysis chamber 34 is previously swept out with oxygen from the top downwards to drive aluminium piston 128 (Fig. 2 not shown) to the bottom of the chamber. When the carbon dioxide-oxygen mixture emerging from purification train 46, 48, 50 passes into the analysis chamber through a restricted orifice (to improve mixing) at its bottom end, the piston rises in the chamber until it intercepts a beam of light actuating a photo-cell which shuts off the flow of oxygen from source 12. The carbon dioxide content of the gas mixture is measured using a bridge circuit which includes thermistors 118, 120 set in block assembly 108 mounted on glass tube analysis chamber 34 over a window 82 in the chamber (Fig. 4 not shown) thermistor 118 being exposed to the inside of chamber 34 and thermistor 120 being the reference thermistor. Fig. 7 (not shown) is a diagram of the electrical circuitry used in automatic operation of the apparatus.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US336696A US3305318A (en) | 1964-01-09 | 1964-01-09 | Rapid carbon determination |
BE658047A BE658047A (en) | 1964-01-09 | 1965-01-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1043057A true GB1043057A (en) | 1966-09-21 |
Family
ID=25656108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB50758/64A Expired GB1043057A (en) | 1964-01-09 | 1964-12-14 | Rapid carbon determination |
Country Status (4)
Country | Link |
---|---|
US (1) | US3305318A (en) |
CH (1) | CH428275A (en) |
DE (1) | DE1498867A1 (en) |
GB (1) | GB1043057A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3979503A (en) * | 1968-05-14 | 1976-09-07 | Packard Instrument Company, Inc. | Method and apparatus for processing fluid materials particularly in the preparation of samples for radioactive isotope tracer studies |
GB1423232A (en) * | 1972-03-07 | 1976-02-04 | Matsushita Electric Ind Co Ltd | Apparatus for burning sample materials and collecting the combustion gases |
US3895630A (en) * | 1973-06-04 | 1975-07-22 | Del Mar Eng Lab | Respiratory gas analyzer including a carbon dioxide and respiratory quotient computer |
JPS5945939B2 (en) * | 1979-11-17 | 1984-11-09 | 株式会社 堀場製作所 | Carbon analyzer in metal |
DE3617246A1 (en) * | 1986-05-22 | 1987-11-26 | Leybold Heraeus Gmbh & Co Kg | METHOD FOR DETERMINING THE CONTENT OF SOLID CARBON COMPOUNDS IN SOIL SAMPLES |
US6627155B1 (en) * | 1998-06-12 | 2003-09-30 | Horiba, Ltd. | Combustion furnace system for analyzing elements in a sample |
CN113777046A (en) * | 2021-08-06 | 2021-12-10 | 中国环境科学研究院 | Method for measuring and calculating emission of carbon dioxide generated by incineration treatment of waste |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3172732A (en) * | 1965-03-09 | Analytical method and apparatus | ||
US1539956A (en) * | 1922-12-09 | 1925-06-02 | Svenska Ab Mono | Electrical indicating or recording means for gas-analyzing apparatus |
US2970041A (en) * | 1960-03-09 | 1961-01-31 | Custon Engineering And Dev Co | Volume-variation measuring and recording apparatus |
-
1964
- 1964-01-09 US US336696A patent/US3305318A/en not_active Expired - Lifetime
- 1964-12-14 GB GB50758/64A patent/GB1043057A/en not_active Expired
- 1964-12-30 DE DE19641498867 patent/DE1498867A1/en active Pending
-
1965
- 1965-01-06 CH CH8965A patent/CH428275A/en unknown
Also Published As
Publication number | Publication date |
---|---|
US3305318A (en) | 1967-02-21 |
CH428275A (en) | 1967-01-15 |
DE1498867A1 (en) | 1969-03-27 |
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