Chemistry: analytical and immunological testing – Process or composition for determination of physical state... – Leak detection
Patent
1996-09-26
1998-06-02
Scheiner, Tom R.
Chemistry: analytical and immunological testing
Process or composition for determination of physical state...
Leak detection
44328, 44600, 44903, 261157, 261158, 261159, 250301, G01N 3100
Patent
active
057598576
ABSTRACT:
Leakage in a heat exchanger between two liquids which are in indirect heat exchange relationship is detected by marking one of the two liquids with a colorless chemical marker and detecting it in the second liquid by extraction and conversion to a colored material. The heat exchanger liquids are preferably organic liquids which are immiscible with water. The marker is detected in a heat exchanger liquid by extraction of the marker followed by chemical conversion of the marker to a colored material that can be detected visually. Aminoalkylnaphthalenes are suitable markers which can be extracted by an acidic aqueous solution and converted to a colored material by reaction with a diazotized aromatic amine. Phenylazoalkylphenol derivatives are also suitable markers which can be extracted and simultaneously converted to a colored material with a detection reagent which is comprised of water and a water-soluble amine.
REFERENCES:
patent: 2689171 (1954-09-01), Hager et al.
patent: 3087064 (1963-04-01), Curtice et al.
patent: 3522008 (1970-07-01), Defabaugh et al.
patent: 3764273 (1973-10-01), Turner et al.
patent: 3790345 (1974-02-01), Mansfield et al.
patent: 4209302 (1980-06-01), Orelup
patent: 4328700 (1982-05-01), Fries
patent: 4688627 (1987-08-01), Jean-Luc et al.
patent: 4735631 (1988-04-01), Orelup
patent: 5156653 (1992-10-01), Friswell et al.
patent: 5205840 (1993-04-01), Friswell et al.
patent: 5252106 (1993-10-01), Hallisy
patent: 5304800 (1994-04-01), Hoots et al.
patent: 5306343 (1994-04-01), Richardson, III et al.
"Detecting Leaks in Hydrotreater Feed/Effluent Heat Exchangers Using Gasoline Dyes," Mar. 1982, American Cyanamid Company, Chemical Products Division, Worldwide Catalyst Department, Wayne, New Jersey 07470.
Goyal Shri K.
Jhawar Ashok K.
Renner Terrence A.
Amoco Corporation
Kretchmer Richard A.
Scheiner Tom R.
Sroka Frank J.
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