System for spectroscopic analysis of a chemical stream
AssigneeSun Oil Company of Pennsylvania
InventorsJames L. Lauer, Melvin E. Peterkin
Life of this patent
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Abstract
A system for performing an on-stream analysis of the chemical composition of a refinery stream. A U-shaped radiation waveguide having a plurality of small apertures therein is inserted into the refinery stream. Far infra-red radiation is introduced into one end of the waveguide. The apertures in the waveguide allow the chemical stream to circulate freely within it, resulting in selective absorption of the radiation traveling through the waveguide which is dependent upon the chemical composition of the stream. A detector detects radiation exiting from the waveguide, and produces a graph of radiation intensity versus wavelength for the far infra-red portion of the spectrum. A spectroscopic analysis of the graph indicates the chemical composition of the stream.
Claims7
A system for performing an on-stream analysis of the composition of a chemical stream and comprising:
- a. a retainer wall means for containing a chemical stream on which an analysis is desired;
- b. at least one window means mounted in said retainer wall means for allowing radiation to be transmitted through said retainer wall into the chemical stream;
- c. radiation waveguide means supported adjacent to said window and extending into the flow of the chemical stream, said radiation waveguide means having apertures therein for allowing the chemical stream to continuously flow through it;
- d. means for introducing a radiation beam through said at least one window means and into said radiation waveguide means whereby the radiation will be transmitted through the chemical stream within said radiation waveguide means, and depending upon the nature of the chemical stream, given wavelengths of the radiation beam will be selectively attenuated;
- and
- e. means, positioned adjacent to said at least one window means, for detecting radiation which has traveled through the chemical stream, whereby the nature of the chemical stream may be ascertained by the radiation absorbed by the chemical stream.
Dependencies are inferred from the claim text.