Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Automatic analytical monitor and control of industrial process
Patent
1991-12-16
1993-11-09
Housel, James C.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Automatic analytical monitor and control of industrial process
422 8206, 422203, 436 55, 356301, 364498, 364500, G01N 2100
Patent
active
052600262
ABSTRACT:
There is disclosed an improved process for the preparation of phosphorus trichloride wherein elemental phosphorus is caused to react with chlorine. The improvement comprises continuous, high speed analysis of the contents of the reactor whereby the reaction is controlled to produce less phosphorus pentachloride and other by-products. The analysis is performed by a laser Raman spectrometer associated with an optrode having a remotely located probe head and a circulating sampling system to continuously provide fresh sample to the probe head continuously. Also disclosed is apparatus for the automatic control of the reaction by control of the reactant feed to the reactor in response to the on-line, continuous analysis of the reactor contents.
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Kirievskaya, et al; Gas-Chromatographic Determination of White Phosphorus and of Certain Phosphorus Chloride; Zhurnal Prickladnoi Khimii, vol. 45, No. 9, pp. 2074-2076 (1972).
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Keeler, R. A. et al; Analysis of Mixtures of White Phosphorus, Phosphorus Oxychloride and Phosphorus Trichloride; Anal Chem. vol. 26, No. 5, pp. 933-934 (1954).
Feld Macaulay S.
Fisher David O.
Freeman John F.
Gervasio Gregory J.
Hochwalt Mark A.
Bhat N.
Bolding James C.
Housel James C.
Loyer Raymond C.
Monsanto Company
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