Simulated moving-bed type chromatographic separation method and simulated moving-bed type chromatographic separation system

Patent metadata

Field	Value
Publication number	US-11839835-B2
Application number	US-201917277077-A
Country	US
Kind code	B2
Filing date	Oct 8, 2019
Priority date	Nov 16, 2018
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

A simulated moving-bed type chromatographic separation method separating a weakly adsorptive component, a strongly adsorptive component, and an intermediately adsorptive component, with eluents by using a circulation system in which a plurality of unit packed columns packed with an adsorbent are connected in series and in an endless form via pipes in which a feed solution supply port F, two or more eluent supply ports D corresponding to the eluents, an extraction port A of a fraction containing the weakly adsorptive component, an extraction port B of a fraction containing the intermediately adsorptive component, and an extraction port C of a fraction containing the strongly adsorptive component are provided in the pipes of the circulation system, and positions of the ports F, A, B, and C are set to have a specified relationship.

First claim

The invention claimed is:

1. A simulated moving-bed type chromatographic separation method comprising separating a weakly adsorptive component, a strongly adsorptive component, and an intermediately adsorptive component that has intermediate adsorptive property in relation to both components, with respect to an adsorbent, with two or more kinds of eluents by using a circulation system in which a plurality of unit packed columns packed with the adsorbent are connected in series and in an endless form via pipes, the weakly adsorptive component, the strongly adsorptive component, and the intermediately adsorptive component being contained in a feed solution, wherein a feed solution supply port F, two or more eluent supply ports D corresponding to the two or more kinds of eluents, an extraction port A of a weakly adsorptive fraction containing the weakly adsorptive component, an extraction port B of an intermediately adsorptive fraction containing the intermediately adsorptive component, and an extraction port C of a strongly adsorptive fraction containing the strongly adsorptive component are provided in the pipes of the circulation system, and positions of the feed solution supply port F, the extraction port A, the extraction port B, and the extraction port C are set as described in the following (a) to (c):
(a) the extraction port B is provided on the downstream side of the feed solution supply port F with at least one unit packed column interposed therebetween;
(b) the extraction port C is provided in the pipe having the feed solution supply port F or the extraction port C is provided on the upstream side of the feed solution supply port F with at least one unit packed column interposed therebetween; and
(c) the extraction port A is provided in the pipe having the extraction port B or the extraction port A is provided on the downstream side of the extraction port B with at least one unit packed column interposed therebetween, and

wherein the chromatographic separation method comprises sequentially repeating (A) and (B):
[(A)]
simultaneously or separately supplying the feed solution and the two or more kinds of eluents from the feed solution supply port F and the two or more eluent supply ports D respectively, and simultaneously or separately extracting the weakly adsorptive fraction, the intermediately adsorptive fraction, and the strongly adsorptive fraction from the extraction port A, the extraction port B, and the extraction port C respectively; and

[(B)]
shifting the feed solution supply port F, the eluent supply ports D, the extraction port A, the extraction port B, and the extraction port C to the downstream side, while maintaining a relative positional relationship therebetween, after finishing (A).

2. The simulated moving-bed type chromatographic separation method according to claim 1 , wherein (A) further includes supplying the feed solution and not supplying the feed solution.

3. The simulated moving-bed type chromatographic separation method according to claim 1 , wherein the extraction port C is provided on the downstream side of an eluent supply port D 1 supplying an eluent d 1 having the strongest desorption strength of the two or more kinds of eluents, at least one unit packed column is arranged between the eluent supply port D 1 and the extraction port C, and in (A), during the eluent d 1 is supplied, the same amount of the strongly adsorptive fraction as the amount of the eluent d 1 supplied is extracted from the extraction port C.

4. The simulated moving-bed type chromatographic separation method according to claim 1 , wherein the extraction port B is provided on the downstream side of an eluent supply port D 2 supplying an eluent d 2 having the second strongest desorption strength of the two or more kinds of eluents, at least one unit packed column is arranged between the eluent supply port D 2 and the extraction port B, and in (A), during the eluent d 2 is supplied, a time interval in which the same amount of the intermediately adsorptive fraction as the amount of the eluent d 2 supplied is extracted from the extraction port B is provided.

5. The simulated moving-bed type chromatographic separation method according to claim 1 , wherein four to six kinds of eluents each having different desorption strength are used.

6. The simulated moving-bed type chromatographic separation method according to claim 1 , wherein the circulation system has four or more unit packed columns, the circulation system is divided into four sections 1 to 4 that are annularly continuous from the upstream side to the downstream side such that each section has at least one unit packed column, and the following methods (A1-1), (A2-1), and (A3-1) are performed in (A) by using the two or more kinds of eluents:
<(A1-1)>
supplying an eluent d-I from an eluent supply port D-I while using an upstream end of the section 1 as the eluent supply port D-I, extracting the strongly adsorptive fraction from the extraction port C while using a downstream end of the section 1 as the extraction port C, supplying an eluent d-II from an eluent supply port D-II while using an upstream end of the section 2 as the eluent supply port D-II, supplying the feed solution from the feed solution supply port F while using an upstream end of the section 3 as the feed solution supply port F, and extracting the weakly adsorptive fraction from the extraction port A while using a downstream end of the section 4 as the extraction port A, thereby
most strengthening desorption strength of the eluent passing through the section 1,
weakening desorption strength of the eluent passing through the section 2 more than desorption strength of the eluent passing through the section 1, and
weakening desorption strength of the eluent passing through the sections 3 and 4 more than desorption strength of the eluent passing through the section 2;

<(A2-1)>
supplying the eluent d-I from the eluent supply port D-I, extracting the strongly adsorptive fraction from the extraction port C, supplying the eluent d-II from the eluent supply port D-II, supplying an eluent d-III from an eluent supply port D-III while using an upstream end of the section 3 as the eluent supply port D-III, and extracting the weakly adsorptive fraction from the extraction port A, thereby
most strengthening desorption strength of the eluent passing through the section 1,
weakening desorption strength of the eluent passing through the section 2 more than desorption strength of the eluent passing through the section 1, and
weakening desorption strength of the eluent passing through the sections 3 and 4 more than desorption strength of the eluent passing through the section 2; and

<(A3-1)>
supplying the eluent d-I from the eluent supply port D-I, extracting the strongly adsorptive fraction from the extraction port C, supplying the eluent d-II from the eluent supply port D-II, extracting the intermediately adsorptive fraction from the extraction port B while using a downstream end of the section 3 as the extraction port B, supplying an eluent d-IV from an eluent supply port D-IV while using an upstream end of the section 4 as the eluent supply port D-IV, and extracting the weakly adsorptive fraction from the extraction port A, thereby
most strengthening desorption strength of the eluent passing through the section 1,
weakening desorption strength of the eluent passing through the sections 2 and 3 more than desorption strength of the eluent passing through the section 1, and
weakening desorption strength of the eluent passing through the section 4 more than desorption strength of the eluent passing through the sections 2 and 3.

7. The simulated moving-bed type chromatographic separation method according to claim 1 , wherein the ci

Assignees

• Organo Corp

Inventors

• Okada Kazuo
• Ogino Masahiro
• Sato Kohei
• Tsuruta Masaki
• Miyajima Toshiki

Classifications

• B01D15/1828

  characterised by process features · CPC title

• B01D15/185 Primary

  characterised by the components to be separated · CPC title

• G01N30/44

  using recycling of the fraction to be distributed · CPC title

• B01D2215/024

  Operations & Transport · mapped topic

• G01N30/46

  using more than one column {(G01N30/44 takes precedence)} · CPC title