Liquid sampling system
AssigneePhillips Petroleum Company
InventorOtis E. Ririe, Jr.
Life of this patent
Estimating the term…
Abstract
In preparing a sample of a liquid material, particularly a sample suitable for chromatographic analysis, an apparatus and method are provided whereby dissolved precipitatable material is removed from the liquid material by precipitation followed by filtering to obtain a liquid sample which can be suitably analyzed. In a preferred embodiment a combination of dilution and cooling are used to precipitate trinitrotoluene from a solution containing sulfuric and nitric acids prior to the chromatographic analysis of the remaining sample liquid material.
Claims33
Apparatus comprising:
- at least one sample conduit means for providing a liquid sample material containing precipitatable material in solution;
- means for initiating precipitation of said precipitatable material from said liquid sample material;
- filter means for separating from the precipitated material at least a portion of the remaining liquid of said liquid sample material;
- and liquid chromatographic analysis means for analyzing said portion of said remaining liquid material;
- wherein said means for initiating precipitation comprises means for cooling said liquid sample material.
Apparatus comprising:
- at least one sample conduit means for providing a liquid sample material containing precipitatable material in solution;
- means for initiating precipitation of said precipitatable material from said liquid sample material;
- filter means for separating from the precipitated material at least a portion of the remaining liquid of said liquid sample material;
- and liquid chromatographic analysis means for analyzing said portion of said remaining liquid material;
- wherein said means for initiating precipitation comprises means for diluting said liquid sample material.
Apparatus comprising:
- a plurality of first conduit means for providing a plurality of liquid material streams each containing precipitatable material in solution;
- sample selector means associated with each said first conduit means for selecting and delivering one of said liquid material streams as a sample stream to a second conduit means;
- precipitation initiating means for cooling and diluting said sample stream received from said sample selector means via said second conduit means and delivering a diluted sample stream to a third conduit means;
- filter means communicating with said third conduit means for accepting said diluted sample stream and dividing said diluted sample stream into a sample liquid stream consisting essentially of diluted, unprecipitated sample material and a sample bypass stream comprising precipitated sample material;
- and
- fourth conduit means communicating with said filter means for removing said sample liquid stream from said filter means.
A method for automatically determining the relative proportions of at least two liquid constituents in at least one liquid source comprising said at least two liquid constituents and dissolved precipitatable material, said method comprising:
- removing a material sample from a selected one of said at least one liquid source;
- precipitating said dissolved precipitatable material within said material sample from solution;
- removing the precipitated material from at least a portion of said material sample to produce a liquid analysis sample;
- and
- analyzing said analysis sample to determine the relative proportions of said at least two liquid constituents therein.
Dependencies are inferred from the claim text.