Heating – Work chamber having heating means – Crucible or pot heating furnace
Patent
1985-02-08
1986-03-04
Camby, John J.
Heating
Work chamber having heating means
Crucible or pot heating furnace
422 78, 422 80, F27B 1400, G01N 3112
Patent
active
045739102
ABSTRACT:
The specification discloses an analyzer for determining the carbon, hydrogen, and nitrogen content of an organic material. The analyzer includes a vertically oriented, U-shaped furnace including a combustion chamber containing a crucible in which the sample is combusted into constituent gases and a reagent chamber containing a reagent through which the constituent gases must pass. A lance extends into the combustion chamber to guide the sample into the crucible and to direct oxygen onto the sample combusting in the crucible. The analyzer further includes an equilibration vessel and means for conveying the constituent gases to the vessel and past CO.sub.2 and H.sub.2 O infrared cells to monitor the products of combustion. Means are provided for conveying the equilibrated gases past the infrared cells to obtain readings relating to carbon and hydrogen content. A doser doses an aliquot of the equilibrated gas into a nitrogen measurement apparatus to obtain a reading relating to nitrogen content.
REFERENCES:
patent: 3296435 (1967-01-01), Teal et al.
patent: 3698869 (1972-10-01), Condon
patent: 3918911 (1975-11-01), Reich
patent: 3923464 (1975-12-01), Sitek et al.
patent: 3958936 (1976-05-01), Knight, Jr.
patent: 4271124 (1981-06-01), Speeter
patent: 4401763 (1983-08-01), Itoh
Perkin-Elmer Catalog, "Elemental Analysis Model 240B Elemental Analyzer", Aug., 1978, printed by Perkin-Elmer Corp. of Norwalk, Conn.
Carlo Erba Catalog for Elemental Analyzer Mod. 1106, printed in Jun. 1980, by the Montedison Group Farmitalia Carlo Erba.
The Rank Hilger Provisional Data Sheet for Infracarb E880, printed in England, by Centrum Industrial Marketing Limited.
Page from Hallikainen Catalog showing the Automatic Macrocombustion Apparatus for the Determination of Carbon and Hydrogen Model 1325.
Pages 407-411 of ASTM American National Standard, ANSI/ASTM D 3178-73 (Reapproved 1979) "Standard Test Methods for Carbon & Hydrogen in the Analysis Sample of Coal and Coke."
Pages 412-415, of ASTM American National Standard, ANSI/ASTM D 3179-73 (reapproved 1979) "Standard Test Methods for Nitrogen in the Analysis of Coal and Coke".
Camby John J.
Leco Corporation
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