CN102744112A - Ion exchange device and operation method of dense moving bed - Google Patents
Ion exchange device and operation method of dense moving bed Download PDFInfo
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- CN102744112A CN102744112A CN2012102753181A CN201210275318A CN102744112A CN 102744112 A CN102744112 A CN 102744112A CN 2012102753181 A CN2012102753181 A CN 2012102753181A CN 201210275318 A CN201210275318 A CN 201210275318A CN 102744112 A CN102744112 A CN 102744112A
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- resin
- ion exchange
- moving bed
- packed moving
- bed ion
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Abstract
The invention provides an ion exchange device and an operation method of a dense moving bed. The ion exchange device of the dense moving bed mainly comprises a resin delivery system, an ion exchange system, a resin transfer system and a resin washing system. Fresh resin is delivered to an ion exchange column in the ion exchange system through a separator of the resin delivery system. Raw material liquid flows upwards from the bottom of the ion exchange column and conducts ion exchange with resin, and delivery water enters an ejector in the resin delivery system and absorbs resin from the ion exchange column in rolling mode to enable the resin to be mixed in the ejector and enter the resin washing tower for washing through a delivery pipe. The ion exchange resin can be continuously and timely transferred and delivered to the resin transfer column through the ion exchange column of the dense moving bend, and a resin bed layer can evenly move downwards in the stable state without layer mass. The device ensures that the resin bed layer is in the dense state all the time in the operation process, ensures effective separation of the resin and material liquid, and completely utilizes resin exchange capability. The resin is less in dosage, high in utilization ratio and corrosion-resistant. The device is safe and stable in operation, simple to operate and easy to control.
Description
Technical field
The present invention relates to a kind of ion interchange unit and method of operating, be specifically related to a kind of packed moving bed ion interchange unit and method of operating, belong to the ion-exchange separation technology field.
Technical background
Ion exchange technique is a kind of liquid phase separation techniques, has good separation selectivity and good effect.In chemical industry, food, medicine, hydrometallurgy, water treatment, field of environment protection recovery, enrichment and purifying operation, be used widely.
Since the ion exchange technique commercial Application, people just are devoted to the developmental research of ion-exchange unit always, and the industrial ionic switching equipment has developed into sizable scale at present, and diameter reaches 4～6m, and disposal ability reaches 10
3～10
4m
3/ h.Closely knit bed is meant that resin particle is deposited on together closely contact each other, and very little space is only arranged between the particle, only allows clear liquid to pass through, and can only handle clear liquid during absorption, and the advantage of this kind exchange bed is an advantages of good adsorption effect, and corresponding apparatus has fixed bed and packed moving bed.Wherein commonly used with fixed bed, fixed bed has simple in structure, and is easy to operate; The exchanger wearing and tearing are few; Single-column feed liquid import and export concentration ratio advantage of higher, but the fixed bed pipeline is complicated, and valve is many; Have a large amount of resins not adsorb saturated just the need in the exchange column and resolve regeneration, the exchange capacity of resin is not fully utilized, and only has the operation capacity of work of part resin and resin lower etc., causes that resin demand is big, floor space big, the equipment investment expense is high.Compare with fixed bed, the secret room moving bed can make full use of the exchange capacity of resin, and resin demand is few, and utilization rate is high, the advantage that equipment capacity is big.The secret room moving-bed ion-exchange equipment successively has polytype to come out both at home and abroad, and has obtained good result.Though the design studies of secret room moving-bed ion-exchange equipment has obtained very big progress with application; But still there is not general, satisfied equipment method for designing at present; In the structural design of equipment, the aspect such as control reliably and do not attain perfect as yet; Need the new version of initiative, and realize the reliable operation of resin transfer and transfer.
Summary of the invention
It is high to the purpose of this invention is to provide a kind of resin utilization rate, simple to operate, the packed moving bed ion interchange unit and the method for operating that are easy to control.
The objective of the invention is to realize through following technology:
The present invention includes resin transfer system, ion exchange system, resin transfer system and resin washing system.Induction system comprises resin storage tank and separator, and inclined-plane lapping and bottom surface angle are 10 °～45 ° in the separator, and its effect is to remove most soft water effectively.Said ion exchange system comprises that diameter is 200～1800mm, and the post height is packed moving bed ion exchange column and the accessory structure thereof of 500～3000mm.Wherein the packed moving bed ion exchange column is made up of post shell, resin outlet, feeding device, post shell, drain cap, porous plate, leakage fluid dram, standpipe, resin storage tank.The post shell constitutes at the bottom of by cylindrical shape shaft, oval capital and tapered pole.Capital has the resin storage tank, links to each other with bed through standpipe, in time the resin in the storage tank is full of whole cylinder.Resin washing king-post tower body diameter is 200～1800mm in the resin transfer system, and the height of cylindrical shape shaft is 1000～3000mm, and angle is 45 °～75 ° at the bottom of the tapered pole.Outlet diameter at the bottom of the tower is 50～200mm, loses with current for fear of resin, and outlet flange place is equipped with stainless steel mesh.It is 1000～2000mm that the injector at saturated resin transfer port place exports above carrier pipe height.
In the operating process of a kind of packed moving bed ion interchange unit provided by the present invention, the conveying of resin and transfer process all adopt liquid ejector to realize.Said injector is made up of nozzle, mixing chamber, trunnion, anemostat, inclined tube.Said nozzle entrance diameter is 5～50mm, and outlet diameter is 2～20mm; Said trunnion segment length is 20～150mm, and diameter is 5～30mm; Said diffusion pipe range 70～295mm; Said inclined tube diameter is 18～60mm.Injector has makes fully mixing of material, good airproof performance, simple in structure, maintenance cost is low, continuity of operation is good advantage.
Fresh resin from resin storage tank delivers into separator by soft water, and soft water returns and carries the tank recycle behind separator, and resin gets into ion exchange column, and resin will leave standstill certain hour after filling up whole exchange column, makes the resin in the post can be tightly compacted; Material liquid gets into the ion-exchange column bottom through feed pump, and the tail washings groove is discharged and flowed into to the exchange tail washings after fully contact is adsorbed from the top.
A kind of packed moving bed ion interchange unit provided by the invention and method of operating; Can guarantee that resin bed is in dense state all the time in the operating process, guarantee that resin effectively separates with feed liquid, make full use of the exchange capacity of resin; Resin demand is few; Utilization rate is high, and is simple to operate, is easy to control.
The present invention in ion exchange process, but within a short period of time resin is discharged, guaranteed the unimpeded of bed, and can not cause its exchange capacity to descend.Packed moving bed ion exchange column has the ion-exchange effect of many series connection fixed beds in the device; It is saturated to reach resin adsorption, and the exchange capacity of resin can be fully used, and has reduced the input amount of resin; Resin and usage ratio of equipment all increase, and have saved investment.
Description of drawings
Accompanying drawing 1 is structural representation of the present invention.
1, carries tank 2, conveying water pump 3, injector 4, resin storage tank 5, separator 6, packed moving bed ion exchange column 7, resin transfer valve 8, spinner flowmeter 9, resin transfer pipe 10, resin scrubbing tower 11, resin drain valve 12, demineralized water tank 13, softened water pump 14, raw material liquid bath 15, feed pump
Accompanying drawing 2 is a packed moving bed ion exchange column structural representation.
6-1, resin outlet 6-2, feeding device 6-3, post shell 6-4, drain cap 6-5, porous plate 6-6, leakage fluid dram 6-7, standpipe 6-8, resin storage tank
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further specified.
The present invention includes resin transfer system, ion exchange system, resin transfer system and resin washing system.As depicted in figs. 1 and 2; Device therefor of the present invention comprises carries tank 1, conveying water pump 2, injector 3, resin storage tank 4, separator 5, packed moving bed ion exchange column 6, resin transfer valve 7, spinner flowmeter 8, resin transfer pipe 9, resin scrubbing tower 10, resin drain valve 11, demineralized water tank 12, softened water pump 13, raw material liquid bath 14, feed pump 15; Wherein closely knit moving iron exchange column 6 comprises resin outlet 6-1, feeding device 6-2, post shell 6-3, leakage fluid dram 6-6; Drain cap 6-4 is installed on porous plate 6-5, is added with standpipe 6-7 on the resin storage tank 6-8.
Used ion exchange column 6 diameters are 300mm, and the post height is 1500mm, and resin scrubbing tower 10 diameters are 350mm, are 1500mm highly, and angle is 60 ° at the bottom of the tapered pole.Outlet 6-1 diameter at the bottom of the tower is 50mm, loses with current for fear of resin, and leakage fluid dram 6-6 outlet flange place is equipped with stainless steel mesh.The above carrier pipe height of injector 3 outlets at saturated resin transfer port place is 1800mm.The nozzle entrance diameter of injector 3 is 10mm, and outlet diameter is 15mm, and the trunnion segment length is 50mm, and diameter is 10mm; Diffusion pipe range 80mm, the inclined tube diameter is 25mm.
Open the transfer valve 7 of packed moving bed ion exchange column 6 bottoms; Soft water delivers into separator 5 through carrying water pump 2 in the tank 1 by carrying through injector 3 from the fresh resin of resin storage tank 4; Soft water returns and carries tank 1 recycle behind separator 5; Resin gets into ion exchange column 6, and resin will leave standstill certain hour after filling up whole exchange column, makes the resin in the post can be tightly compacted; Under the pressure differential effect, ion-exchange resin particles is constantly got into the mixing chamber of injector 3 by packed moving bed ion exchange column 6; Soft water gets into injector after spinner flowmeter 8 meterings, two-phase mixture gets into follow-up resin transfer post 10 through carrier pipe 9 again.Material liquid gets into ion exchange column 6 bottoms through feed pump 15 in the raw material liquid bath 14, and the soft water in the demineralized water tank 12 delivers into resin transfer post 10 through softened water pump 13, and the tail washings groove is discharged and flowed into to the exchange tail washings after fully contact is adsorbed from resin transfer post 10 tops.Resin in the resin transfer post 10 is discharged saturated resin through resin drain valve 11.
Control requires under the identical situation with input and output material in feed conditions, and the operating time of the present invention is 3/8 of a fixed-bed operation adsorption time; The adsorption rate of resin reaches 99.2%, and the turnover rate of ion is less than 1%, and the utilization rate of resin is far above fixed bed.
What should explain at last is: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has carried out detailed explanation with reference to the above embodiments to the present invention,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. packed moving bed ion interchange unit and method of operating, it is characterized in that: a kind of packed moving bed ion interchange unit comprises resin transfer system, ion exchange system, resin transfer system and resin washing system.Said resin transfer system comprises resin storage tank and separator.Said ion exchange system is made up of raw material liquid bath, feed pump, packed moving bed ion exchange column and pipeline.Said resin transfer system is by carrying tank, carrying water pump, injector, resin transfer valve, resin transfer pipe, resin transfer post to form.Said resin washing system is made up of demineralized water tank, softened water pump, resin transfer post.
2. a kind of packed moving bed ion interchange unit as claimed in claim 1 is characterized in that: said packed moving bed ion exchange column is made up of the feeding device of post shell, bottom, the pumping equipment on top.The post shell constitutes at the bottom of by cylindrical shape shaft, oval capital and tapered pole.Capital has the resin storage tank, links to each other with bed through standpipe, in time the resin in the storage tank is full of whole cylinder.
3. a kind of packed moving bed ion interchange unit as claimed in claim 1 is characterized in that: resin washing king-post tower body diameter is 200～1800mm, and the height of cylindrical shape shaft is 500～3000mm, and angle is 45 °～75 ° at the bottom of the tapered pole.Outlet diameter at the bottom of the tower is 50～200mm.
4. a kind of packed moving bed ion interchange unit as claimed in claim 1, it is characterized in that: said injector is made up of nozzle, mixing chamber, trunnion, anemostat, inclined tube.Said nozzle entrance diameter is 5～50mm, and outlet diameter is 2～20mm; Said trunnion segment length is 20～150mm, and diameter is 5～30mm; Said diffusion pipe range 70～295mm; Said inclined tube diameter is 18～60mm.
5. a kind of packed moving bed ion interchange unit as claimed in claim 1 is characterized in that: in the said induction system in the separator inclined-plane lapping and bottom surface angle be 10 °～45 °.
6. the method for operating of a kind of packed moving bed ion interchange unit as claimed in claim 1 is characterized in that: the conveying of resin and transfer process all adopt liquid ejector to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102753181A CN102744112A (en) | 2012-08-06 | 2012-08-06 | Ion exchange device and operation method of dense moving bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102753181A CN102744112A (en) | 2012-08-06 | 2012-08-06 | Ion exchange device and operation method of dense moving bed |
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| CN102744112A true CN102744112A (en) | 2012-10-24 |
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| CN2012102753181A Pending CN102744112A (en) | 2012-08-06 | 2012-08-06 | Ion exchange device and operation method of dense moving bed |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4228001A (en) * | 1978-04-12 | 1980-10-14 | American Petro Mart, Inc. | Folded moving bed ion exchange apparatus and method |
| CN1083025A (en) * | 1992-12-15 | 1994-03-02 | 河南省南阳市宇航软化水设备厂 | Three-tower automatic inner pressure type fluidized bed for softening water |
| CN2302845Y (en) * | 1997-08-20 | 1999-01-06 | 朱有权 | Continuous flowing fludised-bed for prodn. of xylose |
| US6716344B1 (en) * | 2000-10-02 | 2004-04-06 | The University Of Western Ontario | Liquid-solids circulating fluidized bed |
-
2012
- 2012-08-06 CN CN2012102753181A patent/CN102744112A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4228001A (en) * | 1978-04-12 | 1980-10-14 | American Petro Mart, Inc. | Folded moving bed ion exchange apparatus and method |
| CN1083025A (en) * | 1992-12-15 | 1994-03-02 | 河南省南阳市宇航软化水设备厂 | Three-tower automatic inner pressure type fluidized bed for softening water |
| CN2302845Y (en) * | 1997-08-20 | 1999-01-06 | 朱有权 | Continuous flowing fludised-bed for prodn. of xylose |
| US6716344B1 (en) * | 2000-10-02 | 2004-04-06 | The University Of Western Ontario | Liquid-solids circulating fluidized bed |
Non-Patent Citations (2)
| Title |
|---|
| XU CONG 等: "Application of liquid solid semi-moving Bed to Fractionation of Cesium Ion in wastewater", 《CHIN.J.CHEM.ENG.》 * |
| 张小静: "密实移动床离子交换过程及装置研究", 《河北工业大学学位硕士论文》 * |
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Application publication date: 20121024 |