Liquid purification or separation – With means to add treating material – Chromatography
Patent
1990-04-06
1991-10-29
Therkorn, Ernest G.
Liquid purification or separation
With means to add treating material
Chromatography
210104, 210143, B01D 1508
Patent
active
050613715
ABSTRACT:
A chromatographic separation apparatus having a packed column comprising a packed layer, a retained liquid layer above the packed layer, and liquid-feed piping connected to a space above the retained liquid layer and having a flow controller: comprising flow-liquid discharge piping being connected to the bottom of the packed column and having a flow controller, a liquid-level detecting element being provided at the top of the packed column, and a plurality of interface-detecting elements being provided at the inside wall of the packed column; and electrical connection being made so that a first electric signal of the height of the packed layer is transmitted from the interface-detecting element to a controller constituted of a signal converter, an electric current generator, an addition-computing element, and an adjuster; and a second electric signal is transferred from the liquid-level detector provided at the top of the column to the adjuster; and output signal is transmitted from the adjuster to the first controller of the liquid-feed piping and the second controller of the discharging piping.
REFERENCES:
patent: 2850438 (1958-09-01), Bodkin
patent: 2904518 (1959-09-01), Shea
patent: 3279604 (1966-10-01), Leviel
patent: 3512640 (1970-05-01), Hellman
patent: 3852193 (1974-12-01), Jakubek
patent: 3960726 (1976-06-01), Peterson
patent: 4133759 (1979-01-01), Ikeda
Ide Soichiro
Moro Akihiko
Nagatani Ryuji
Tabata Takeshi
Fujisawa Pharmaceutical Co. Ltd.
Nippon Rensui Co.
Therkorn Ernest G.
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