Chemistry of inorganic compounds – Phosphorus or compound thereof
Patent
1987-05-15
1989-03-21
Doll, John
Chemistry of inorganic compounds
Phosphorus or compound thereof
C01B 2500
Patent
active
048141542
ABSTRACT:
The invention relates to a method and apparatus or plant for preparing a disinfestation or disinsection fluid which contains an inert fluid and phosphine obtained from the hydrolysis of a water-decomposable metal phosphide. According to the invention to the inert fluid H.sub.2 O is added, the inert fluid/H.sub.2 O mixture brought into contact with the metal phosphide for the reaction and the resulting disinfestation fluid separated from the solid reaction residue. The mixture of inert fluid and H.sub.2 O is brought to react either in liquid or in gaseous state with the metal phosphide. A simple method of preparing the disinfestation fluid resides in that in an opened pressure container (1) calculated amounts of metal phosphide (2), solidified inert fluid (3) and water ice (4) are layered over each other in that order, the pressure container (1) closed and a temperature equalization with the ambient temperature allowed to take place. After completion of corresponding reactions a gaseous mixture of inert fluid and phosphine can be extracted via an expansion valve (7).
REFERENCES:
patent: 3375074 (1968-03-01), Palmer
patent: 3899375 (1975-08-01), Palmer
patent: 4725418 (1988-02-01), Friemel et al.
Doernemann Manfred
Reif Helmut
Degesch GmbH
Doll John
Langel Wayne A.
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