Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including heat exchanger for reaction chamber or reactants...
Patent
1994-02-16
1996-01-23
McMahon, Timothy M.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including heat exchanger for reaction chamber or reactants...
422200, 422201, 422195, B01J 1000
Patent
active
054863392
ABSTRACT:
According to the invention the non-catalytic high-pressure process for producing the melamine occurs in one single body having a vertical cylindrical shape divided into three sectors separated by means of diaphragms, each sector communicating with the other two through pipelines separated from one another. The top sector (L) is provided with at least one nozzle (1) for letting in the molten urea, with at least one distributor for the reaction gas (3), with at least one pipe (7) connecting said sector with the bottom reaction sector (R), with at least one valve (15) for extracting the residual gas and for adjusting the operating pressure of the reactor and with at least one exchanger cooling the urea. The bottom sector (R), wherein the reaction of the melamine synthesis occurs, is equipped with at least one element for the distribution (10) of the ammonia, with at least one pipe (7) for feeding the molten urea coming from the top sector, with at least one system (8) for obtaining the thermic energy necessary for the reaction, with at least one opening (110) made in the diaphragm (SR) and separating said bottom sector from the central sector. The central sector (S), wherein the separation of the gaseous products from the liquid phase of the reaction occurs, is provided with at least one pipe (11) for feeding the reaction products, with at least one distributor (12) of the ammonia, with means for keeping the temperature of said sector under control, with at least one opening (210) made in the diaphragm (LS), separating said sector from the top sector through which the reaction gases are transferred to the upper sector, with at least one tube (30) for the outlet of the melamine produced.
REFERENCES:
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patent: 2905537 (1959-09-01), Copenhaver
patent: 3095416 (1963-06-01), Crowley et al.
patent: 3746515 (1973-07-01), Friedman
patent: 4311671 (1982-01-01), Notman
patent: 4937051 (1990-06-01), Graven et al.
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