Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition – Control element responds proportionally to a variable signal...
Patent
1982-09-28
1986-10-07
Lacey, David L.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
Control element responds proportionally to a variable signal...
422112, 422267, 422285, 260705, 210108, 210137, G05D 700
Patent
active
046158685
ABSTRACT:
An apparatus for purifying copper phthalocyanine pigment in a continuous process without the use of acid. This apparatus comprises a container for preparing a slurry of said pigment in water, a pump and a conduit for conducting the slurry from the container to the inlet of the pump, a first heating apparatus capable of heating the slurry to a temperature of at least about 75.degree. C., a conduit for conducting the slurry from the pump to the first heating apparatus, a thin film pressure filter, and a conduit for conducting the slurry from the first heating apparatus to the thin film pressure filter. The apparatus is arranged such that the temperature of the slurry passing through the thin film pressure filter is close to the exit temperature of the slurry from the first heating apparatus. A product outlet is provided for the filter and a control valve is positioned in the product outlet.
The apparatus includes structure for washing filter cake comprising a source of wash water, a pump, and a conduit from the source of wash water to the inlet of the pump, heating device, and a conduit for conducting wash water from the outlet of the pump to the heating device. The heating device has sufficient capacity to provide wash water at a temperature approaching that of the slurry entering the filter. A conduit is provided for conducting the wash water from the heating device to the thin film pressure filter. The apparatus also includes control apparatus adapted to control the speed of both motors on both pumps in turn controlling the pressure of the slurry entering the filter and the pressure of the wash water entering the filter.
REFERENCES:
patent: 2956944 (1960-10-01), Logan
patent: 3084119 (1963-04-01), Cabbage
patent: 3152986 (1964-10-01), Bice
patent: 3443692 (1969-05-01), Halsey
patent: 4151080 (1979-04-01), Zuckerman
patent: 4342638 (1982-08-01), Dahlstrom
Artisan Continuous Filter for the Processing Ind., Bull. #4060, Artisan Ind. Inc., Waltham, Ma., Nov. 1977.
The Artisan Continuous Filter, Artisan Ind. Inc., Waltham, Ma., Nov. 1977.
Bagdasarian et al., "Operational Features of Staged, High-Pressure, Thin-Cake Filters", Filtration and Separation, Nov. 1978.
Bennet and Myers, Momentum, Heat, and Mass Transfer, 2nd Edition, pp. 447-454.
Donegan Thomas E.
Schroeder Rodney G.
Wong Matthew K. L.
BASF Corporation
Lacey David L.
Swick Bernhard R.
LandOfFree
Apparatus for purifying copper phthalocyanine pigment does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for purifying copper phthalocyanine pigment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for purifying copper phthalocyanine pigment will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-642275