CN104661753B - Method for operating a counter-flow ion exchange system - Google Patents

Method for operating a counter-flow ion exchange system Download PDF

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Publication number
CN104661753B
CN104661753B CN201380038539.XA CN201380038539A CN104661753B CN 104661753 B CN104661753 B CN 104661753B CN 201380038539 A CN201380038539 A CN 201380038539A CN 104661753 B CN104661753 B CN 104661753B
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China
Prior art keywords
column
exchange resin
post
port
lower port
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Application number
CN201380038539.XA
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Chinese (zh)
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CN104661753A (en
Inventor
J·M·斯莱格特
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Dow Chemical Co
DDP Specialty Electronic Materials US LLC
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Dow Global Technologies LLC
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J47/00—Ion-exchange processes in general; Apparatus therefor
    • B01J47/02—Column or bed processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J47/00—Ion-exchange processes in general; Apparatus therefor
    • B01J47/02—Column or bed processes
    • B01J47/026—Column or bed processes using columns or beds of different ion exchange materials in series
    • B01J47/028—Column or bed processes using columns or beds of different ion exchange materials in series with alternately arranged cationic and anionic exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J47/00—Ion-exchange processes in general; Apparatus therefor
    • B01J47/02—Column or bed processes
    • B01J47/022—Column or bed processes characterised by the construction of the column or container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/05—Regeneration or reactivation of ion-exchangers; Apparatus therefor of fixed beds
    • B01J49/08—Regeneration or reactivation of ion-exchangers; Apparatus therefor of fixed beds containing cationic and anionic exchangers in separate beds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
    • B01J49/90—Regeneration or reactivation of ion-exchangers; Apparatus therefor having devices which prevent back-flow of the ion-exchange mass during regeneration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

An improved counter-flow ion exchange system and method for operating the same, including a plurality of vertically aligned columns of packed bed ion exchange resin including: an upstream column including a packed bed of cation exchange resin, and a downstream column including a packed bed of anion exchange resin that is in fluid communication with the upstream column, wherein both columns comprises an upper and lower port for ingress and egress of fluid. The subject method of operation includes the steps of: i) introducing a feed liquid into the upper port of the upstream column such that feed liquid flows downward through the column and exits through the lower port, and subsequently flows into the lower port of the downstream column and upward to exit from the upper port, ii) discontinuing the introduction of feed liquid, iii) introducing a first regenerate into the into the upper port of the downstream column such that regenerate flows downward through the column and exits through the lower port and introducing a second regenerate into the into the lower port of the upstream column such that regenerate flows upward through the column and exits through the upper port, and iv) repeating steps i) through iii).

Description

Method for operating reverse-flow ion exchange system
Technical field
The present invention relates to the ion exchange system including multiple filling columns operated under counter-flow pattern.
Background technology
It is used for various going in mineral and softening application including the ion exchange system of multiple filling columns.For example, it is alive Hundreds of AMBERPACK is currently in use in the range of boundaryTMAnd DOWEXTMUPCORETMFilling bed system.AMBERPACKTMFilling Bed system is operated with upper up-flow production and sinking regeneration mode.DOWEXTMUPCORETMDrop stream life below filling bed system Produce and upper up-flow regeneration mode is operated.AMBERPACKTMAnd UPCORETMTwo kinds of systems are each designed to single or multiple compartment cloth Office.Such as two or three compartment posts (referred to as " stratified bed ") can accommodate weak and strong electrolyte resin combination, be efficiently System.
The content of the invention
The present invention includes improved reverse-flow ion exchange system and the method for operating this system.In an embodiment party In formula, the system includes multiple packed bed ion exchange resin columns being vertically arranged, the packed bed ion exchange resin column Comprising：Upstream post, including cation exchange resin packed bed；And downstream column, including anion exchange resin packed bed, its with The upstream post fluid communication, wherein, two kinds of posts include upper and lower port, for introducing and drawing fluid.Another Plant and in embodiment, operate the method for the system to comprise the steps of：
I) feed liquid is introduced the upper port of the upstream post so that feed liquid flows through the post to decline And discharged by the lower port, and flow into the lower port of the downstream column afterwards and ramp up flowing with described Discharge portion port；
Ii) interrupt the introducing of feed liquid；
Iii) first regrowth is introduced the upper port of the downstream column so that regrowth flows down through institute State post and discharged by the lower port, and the second regrowth is introduced the lower port of the upstream post so that regeneration Thing is flowed upward through the post and is discharged by the upper port；And
Iv) repeat step i)～iii).
Description of the drawings
Figure 1A is the schematic diagram of the double compartment embodiment of the present invention operated with production model.
Schematic diagrams of the Figure 1B for the embodiment of Figure 1A of regenerating-mode operation.
Specific embodiment
In one embodiment, the present invention includes a kind of reverse-flow ion exchange system, is generally shown as in Figure 1A and B 10.Described system includes that two are vertically arranged post, including upstream post (12), containing cation exchange resin packed bed；With And downstream column (14), including anion exchange resin packed bed.The downstream column (14) and upstream post (12) fluid communication, Allow fluid to flow to the downstream column (14) from the upstream post (12).Two kinds of posts (12,14) are included at least one Portion (16,16 ') and bottom (18,18 ') port, for introducing and drawing fluid.The two kinds of posts (12,14) for illustrating are comprising utilization The top (20,20 ') separated equipped with the plate of nozzle (24,24 ') and bottom (22,22 ') room.The upstream post (12) it is described Upper chambers (20) are filled with Weak-acid cation exchange resin, and the bottom compartment (22) is filled with strong-acid cation-exchange resin. The upper chambers (20 ') of the downstream column (14) are filled with strong basic anion-exchange resin, and the bottom compartment (22 ') filling There are weak base anion resins.The post is connected with pipeline, and the fluid in production model is flowed in figure ia with the thick of arrow Solid line is indicated, and Figure 1B is shown in regeneration mode.The upstream post (12) includes optional clear space (freeboard) And floating inert plastic (28) (26).Optional degassing tower (30) can be along between the upstream and downstream post (12,14) Fluid path is laid.
Although being shown as, comprising 2 posts, can also using extra post.Similarly, although each post for illustrating includes 2 Individual room, but can also use single chamber or multicell to arrange.Each post can be disconnected comprising vent known in the art, import, injection The options such as road device (jet breaker), stiffening plate.
In operation, the system is circulated between production and regeneration mode.During the production model, enter Feed liquid body is introduced in the upper port (16) of the upstream post (12) so that feed liquid is down through the post (12) and by the lower port (18) discharge, and flow into the lower port of the downstream column (14) afterwards (18 '), and flow up to discharge from the upper port (16).With reference to schematic arrows, the production model and corresponding Fluid flow direction is illustrated in Figure 1A.In regeneration mode process, feed liquid is introduced the system (10), and first by interruption Regrowth is introduced in the upper port (16 ') of the downstream column (14) so that the regrowth is down through institute State post (14) and discharge from the lower port (18 '), reclaimed in this.Meanwhile, the second regrowth can be introduced into described The lower port (18) of upstream post (12) so that regrowth flows upward through the post (12) and by the upper end Mouth (16) is discharged, and can be reclaimed in this.With reference to schematic arrows, the regeneration mode and corresponding fluid flow direction are shown in Figure 1B Go out.The operation can additionally include optional backwash step.
The system of subject and operational approach illustrate AMBERPACKTMAnd UPCORETMThe mixing of filling bed system, wherein The upstream post (12) is used as UPCORETMThe system operatio and downstream column (14) is used as AMBERPACKTMSystem operatio.This Hybrid system is there is provided relative to AMBERPACKTMAnd UPCORETMThe unexpected advantage of filling both bed systems.
Embodiment
AMBERPACKTMAnd DOWEXTMUPCORETMThe performance of filling bed system is modeled and can be from The Dow with using Corresponding " mixing " for CADIX (the CAD (computer aided design) ion exchange 6.2 editions) design software that Chemical Company are obtained System is compared.In several cases, flow velocity, post setting, resin are identical with regrowth.The modeled result is summarized in Table 1.In dual chamber hybrid system shown in the drawings is also included within.As shown in data, compared to comparative UPCORETMWith AMBERPACKTMFilling bed system, when operating under the TSS of increase loads, the hybrid system has preferably operation available Property and need less work water.
Table 1

Claims (1)

1. the method for being used for operating reverse-flow ion exchange system, the system are handed over comprising multiple packed bed ions being vertically arranged Resin column is changed, the packed bed ion exchange resin column includes：
Upstream post, comprising cation exchange resin packed bed；And
Downstream column, comprising anion exchange resin packed bed, itself and the upstream post fluid communication, wherein, two kinds of posts are comprising upper Portion and lower port, for introducing and drawing fluid；
Wherein, methods described is comprised the steps of：
I) feed liquid is introduced the upper port of the upstream post so that feed liquid is down through the post and passes through The lower port is discharged, and is flowed into the lower port of the downstream column afterwards and flowed up to arrange from the upper port Go out；
Ii) interrupt the introducing of feed liquid；
Iii) first regrowth is introduced the upper port of the downstream column so that regrowth is down through the post And discharged by the lower port, and the second regrowth introduced the lower port of the upstream post so that regrowth to The excessively described post of upper influencing meridian is simultaneously discharged by the upper port；And
Iv) repeat step i)～iii)；And
Wherein described upstream post includes the upper chambers comprising Weak-acid cation exchange resin and comprising strong-acid cation-exchange resin Bottom compartment,
And the downstream column includes the upper chambers comprising strong basic anion-exchange resin and comprising weak basic anion exchange resin Bottom compartment.
CN201380038539.XA 2012-07-20 2013-07-03 Method for operating a counter-flow ion exchange system Active CN104661753B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201261673882P 2012-07-20 2012-07-20
US61/673,882 2012-07-20
PCT/US2013/049179 WO2014014665A1 (en) 2012-07-20 2013-07-03 Method for operating a counter-flow ion exchange system

Publications (2)

Publication Number Publication Date
CN104661753A CN104661753A (en) 2015-05-27
CN104661753B true CN104661753B (en) 2017-05-10

Family

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Application Number Title Priority Date Filing Date
CN201380038539.XA Active CN104661753B (en) 2012-07-20 2013-07-03 Method for operating a counter-flow ion exchange system

Country Status (4)

Country Link
CN (1) CN104661753B (en)
BR (1) BR112015001271A2 (en)
RU (1) RU2631816C2 (en)
WO (1) WO2014014665A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102203041B1 (en) * 2014-06-10 2021-01-13 쿠리타 고교 가부시키가이샤 Operating method for regeneration type ion exchange device
CN109225359A (en) * 2018-09-21 2019-01-18 深圳市大分子科技有限公司 The preparation method of ion exchange column applied to polyimides purification

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3617558A (en) * 1970-11-02 1971-11-02 Illinois Water Treatment Co Layered ion exchange process
AT324962B (en) * 1973-03-13 1975-09-25 Nagykanizsai Finommechanikai V ION EXCHANGE DEVICE, PREFERABLY WITH COUNTERCURRENT REGENERATION
US4001113A (en) * 1975-01-28 1977-01-04 The Amalgamated Sugar Company Ion exchange method
DE3014310A1 (en) * 1980-04-15 1981-10-22 Metallgesellschaft Ag, 6000 Frankfurt Double-bed ion exchange filter with regenerating soln. - flowing in opposite directions in each bed
GB8519954D0 (en) * 1985-08-08 1985-09-18 Dow Chemical Belgium Nv Ion exchange applications

Also Published As

Publication number Publication date
RU2015105764A (en) 2016-09-10
BR112015001271A2 (en) 2017-07-04
CN104661753A (en) 2015-05-27
RU2631816C2 (en) 2017-09-26
WO2014014665A1 (en) 2014-01-23

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