Liquid purification or separation – Processes – Separating
Patent
1998-06-26
2000-09-12
Wyse, Thomas G.
Liquid purification or separation
Processes
Separating
210232, 210282, 210287, 210341, B01D 2438
Patent
active
061173436
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a filler-packing apparatus, a filler-packing method, and a filler-packed column assembly. More specifically, this invention relates to a compact space-saving filler-packed column assembly, which can suitably be used for a simulated moving bed separation apparatus for instance, a filler-packing apparatus, which enables efficient, rapid and uniform packing of a filler in each column of the filler-packed column assembly as well as a method of efficiently, rapidly, and uniformly packing the filler in each column of the filler-packed column assembly.
BACKGROUND OF THE INVENTION
The simulated moving bed separation apparatus comprises a circulation fluid passage, which is formed by endlessly connecting a plurality of beds packed with a separation filler. A circulation fluid circuit is provided with an eluent inlet for introducing an eluent, an extract outlet for discharging a solution rich in adsorbable substances or strongly adsorbable substances, a stock solution inlet for introducing a stock solution containing a mixture of components, which are to be separated, and a raffinate outlet for discharging a solution rich in non-adsorbable or weakly adsorbable substances sequentially in this order in the direction of the fluid flow, wherein the inlets and outlets are successively shifted intermittently.
In the simulated moving bed separation apparatus, there are provided a desorption zone (IV), which comprises filler beds placed between the eluent inlet and the extract outlet, wherein the separation filler retaining a concentrated adsorbed or strongly adsorbed components is contacted with an eluent and the adsorbed or strongly adsorbed components are expelled from the separation filler; a concentration zone (III), which comprises filler beds placed between the extract outlet and the stock solution inlet, wherein the non-adsorbable or weakly adsorbable components remaining on the separation filler are expelled and the adsorbable or strongly adsorbable components are concentrated; a refining zone (II), which comprises filler beds placed between the stock solution inlet and the raffinate outlet, wherein the stock solution is contacted with the separation filler and adsorbable or strongly adsorbable components are adsorbed on the separation filler and non adsorbable or weakly adsorbable components are recovered with the eluent; and an adsorption zone (I), which comprises filler beds placed between the raffinate outlet and the eluent inlet, wherein the non-adsorbable or weakly adsorbable components are adsorbed on the separation filler and the eluent, in which the non-adsorbed or weakly adsorbed components are depleted, is recovered.
When a simulated moving bed separation apparatus is assembled, a separation filler, which separates the components to be separated, must be packed into columns first of all.
Conventionally, columns are packed with a filler one by one and the packed columns are inspected one by one. More specifically, there are dry method and wet method for packing columns in filler packing.
In the case of the wet packing, a column, which is a cylinder, is positioned upright and an end stopper is fixed to the bottom opening at the bottom end thereof. The top end of the column is connected to the bottom opening of a reservoir tank. Thus the inside space of the column is communicated with the reservoir tank. When the column is connected to the reservoir tank, it is still empty. The reservoir tank is provided with a closable slurry-introducing inlet and a solvent-supplying inlet at the top thereof. A column is connected to the reservoir tank and the slurry-introducing inlet of the reservoir tank is opened to allow the slurry to flow into the reservoir tank.
In this connection, a slurry suitable for wet packing is the one comprising a filler having an average particle diameter of about 50 .mu.m dispersed in a dispersion solvent at a concentration of 10-60 wt/vol %. Then the slurry-introducing inlet is closed and a dispersion solvent is forcibly introduced into
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Murazumi Koichi
Nagamatsu Shinji
Daicel Chemical Industries Ltd.
Wyse Thomas G.
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