DE1803202C - Device for the treatment of liquid chains by means of an ion exchange resin with an ion exchange column with a countercurrent fluidized bed - Google Patents

Description

The present invention relates to an ion exchange treatment apparatus of the countercurrent fluidized bed type and, more particularly, to an improved ion exchange treatment apparatus advantageously suitable for the continuous treatment of a large amount of liquid, such as, for. B. water, polar solvents having a specific gravity substantially equal to that of water, or a mixture of water and such polar solvents.

There are already various methods for continuous implementation of an ion exchange treatment has become known, the so-called perfect continuous process in which the flow of the treated liquid and the ion exchange resin is always echoed in an uninterrupted state, is due to the many mechanical and economic problems that exist are not yet available.

For this reason, semi-continuous technical working methods are also usually referred to as "continuous working methods"; typical examples of these working methods are the Higgins process according to US Pat. No. 2,815,322, the Robert Potor process (Chemical Week, p. 74 to 76 of June 9, 1956) and the method described in Japanese Patent Publication 5104 of 1963.

According to these working methods, which differ from the use of the conventional fixed bed type, parts of the resin layer, the ion exchange capacity of which has decreased, are removed from the Exchange treatment zone removed and fed to a regeneration system. Simultaneously with this Removal, a regenerated resin in an amount equal to that removed will be removed from the ion exchange treatment area from the regeneration system. completely added, so that an ion exchange treatment with the minimum amount of the suppliedUn Resin ensures that no ions escape. Since parts of the resin that have lost their exchangeability do not last for a long time with this system. span in the resin bed, a device with the same amount of charge can treat a relatively large amount of the liquid with high efficiency. This also greatly improves the effectiveness of the regeneration. In addition, time Variations in the quality of the treated liquid are small, so that this system is suitable for the treatment of liquids with high ionic concentrations with easy control. However, in the method described above the fluidized bed type ion exchange treatment Neifc-Ag for mechanical grinding of the resin large due to friction and contact with valves, and with increasing treatment capacity leads to an increase in the diameter of the treatment Lung column to uneven packing of the resin as well as uneven distribution of the flow of liquid to be treated, resulting in a more uneven Ion exchange of the liquid is caused. Similarly, those from the USA.-Pa publications 3 152 072, 3 244 561 and the Belgian Patent specification 622 174 known devices a semi-continuous operation. The pro Batch amount of resin used is determined by time-controlled solenoid valves, which have the effect that The liquid pressure in the column is temporarily lowered, which then creates a ball check valve in the The upper end of the column opens and through the opening a quantity of resin that has collected in a funnel located above enters the ion exchange column entry.

The object of the invention is to provide a device for treating liquids by means of an ion exchange resin with an ion exchange column

I 803

mil countercurrent fluidized bed, in which the ion exhaustion is supplied in the upper column section, from _W M os as fluidized bed downwards, and in which the liquid to be treated is supplied at the bottom of the column v. , · D, from where it flows up through the fluidized bed. u; ·.! with a countercurrent regeneration column, in the ii. ■■ - Ionenaustaus'.herharz. that in the lonenaus-!.,. .h '.- rsäiile is introduced, regenerated and aiisi .'-.--.' ..! see and the upper section of the ions -.:.,! Juschersäule is fed back in such a way to ver-ι oV-TH. that she is able. to work in a real, true process, which means that the amount of hary that has sunk is at the bottom! ,. ; ·: The lonenaiistausehersäuie is continuously compartment, while the pale is more rural.

. '. Ored amount of resin supplied at the top of the column
ν. ■■; .11 must. In addition, there should be a grinding
of the ion exchange resin is negligibly small
se: n and the flow of a large amount of the treated liquid can be straightened evenly. 20 is connected.

This object is achieved in a device The invention

of the type mentioned above in that a separation chamber with nozzles is located at the bottom of the lonenaiistausehersäuie H-J a resin transfer chamber with a fiber net, a lower filing chamber, a discharge line, which opens up near the mute of the lower filter, a distribution line in the middle Part of the column / Air introduction and distribution of a regeneration agent and above the distribution area arranged discharge ^ cHnv. ' . · Ι; ηι Collect and trust used rinse water. In the upper part of the regeneration and rinsing column are an upper filter, an upper filter chamber and a resin transfer chamber between the upper end of the resin introduced into the column and the upper filter provided. An overpass ■ line / ur transfer of the re-generated and spooled Harz extends through the upper I liter urui opens near, los upper: finds the imported Har / es. Fine finish line! for the rinse water is connected to the upper filing chamber. while a drain line for the consumed Regenerating agent .ail the lower filter chamber

is explained in detail below with reference to the drawing; shows

F i g. 1 shows a schematic longitudinal section of an embodiment of an ion section according to the invention

capacity for the predetermined amount of exchange column of the countercurrent fluidized bed type, Ion exchange resin at the top of the Regene- F i g. 2 a longitudinal section of the upper, part of a

modified ion exchange column,

F i g. 3 is a plan view showing an embodiment

^ _o the arrangement of separating nozzles and collecting nozzles

Figure 3 illustrates a countercurrent flow ion exchange column on a distribution plate; BiMtyp created, wherein the ion exchange resin in F i g. 4 a schematic longitudinal section of an

ii.Mi upper part of the column is introduced so that it M.ii as a fluidized bed moved downwards and gradually and

iv.!; 'in column are provided.

various advantageous embodiments of this solution according to the invention are possible. So z. B.

after can be removed from the bottom of the column.

management form of the regeneration system according to the invention and

F i g. 5 is a schematic representation of a mode

while the treated liquid at the bottom of the 35 fied regeneration system.

Column is introduced into this, to get to the lonenati .lauscherharz in countercurrent fashion in contact, and then the column is discharged at the top, wherein the ion exchange ^c marked Äule characterized

Preferred embodiments of the invention are described below.

The in F i g. Ion exclusion treatment column shown in Fig. 1 comprises an ion exchange area 1, the

It is shown that in the upper part of the column there is a space between a separating chamber 10 and an adjoining one horizontal filter for the chamber to be treated 3 is located. A perforated loading

Carrier plate 11 is between the ion exchange area 1 and the separation chamber 10 is provided, while a loading carrier plate 2 between the loading

Liquid, for example in the form of a wire mesh, a resin feed chamber immediately below

the filter and a support plate under the feed ---- "....

Chamber are provided that an inlet line 45 is provided for the charging chamber 3 and the ion exchange area for the ion exchange resin in the direction of the. Each support plate 11 or Beschik-Boden in the vicinity of the center of the filter for the Bekungträgerplatte 1 is a perforated plate with an acting liquid that opens an ion exchange multitude of chambers evenly over the entire surface under the support plate, that one in the distributed perforations, so that the resin, together substantially horizontal perforated resin carrier plate 50 with the liquid to be treated through the hat under the ion exchange chamber is provided that can pass. At the upper end of the beeine resin separation chamber under the resin carrier plate dispatch chamber 3 and, if desired, it is also provided that in the resin separation chamber lower end of the separation chamber 10 filters 4 and separation nozzles and collection nozzles are provided and that 12, preferably in the form of wire nets There is a resin discharge line in the middle of the bottom 55. · Through the liquid, but no haiz, and the resin separation chamber opens upwards. Another feature of the present invention, for example, stainless steel, or, preferably, an ion exchange treatment device, a plastic Sold exchange column with a washing column for washing 60 "Sarar" are made. To remove the liquid from spent resin overflowing from the ion exchange wedge that accompanies the resin that has been issued from a later downcolumn and a regeneration-written regeneration system, and rinse column, in which the from the wash column and around To prevent the entry of such liquid into a discharged spent resin of a regeneration ion exchange area 1, a ring treatment is subjected to rinsing; then 6 _5- shaped filter chamber 6 for accompanying liquid it is directed back to the ion exchange column around the inner periphery of the ion exchange area An embodiment of the regeneration and rinsing column is provided.

5 6

are used, the treated liquid is temporarily not disrupted by nozzles 18 separated resin. It

to record. wildly pointed out that the arrangement of different

As in Fig. 1, the peripheral part of the different nozzles and their discharge direction can be varied. Filter 4 can be used as the filter element for the filter chamber 6, for effective separation and discharge of accompanying liquid. To ensure age 5 precipitation of the resin,
natively, as shown in FIG. In the following, the operation of the illustrated filter chamber 6a will be provided in order to illustrate the ion-ion exchange column: Vot to surround the exchange column. In this modification, the liquid is exchanged, a wire mesh 21, which acts as a filter, is inserted around the entire loading chamber 3, filter chamber 6a and loading chamber 3 in front of the ion exchange area 1 and the separation chamber. 10 to fill. After supplying the liquid through

A plurality of cut-off nozzles 18 and a multiple inlet line 15 is the spent resin in the number of collecting nozzles 18 is on a distribution separation chamber 10 through the discharge line 14 mitplatte 16 are provided, which are contained in the separation chamber 10 by means of the above-described effect of the separation is. If it is desired, the liquid 15 nozzle 18 and the collecting nozzle 17 carried away. to or the water that is to be treated at any given time is a valve 19, which is in the Ausweiligen Nozzles with a constant pressure supply line is open. When everything goes wrong A liquid filter 12 and a liquid used resin in the separation chamber 10 can be carried away keitsverteilungskammer 13 is under the distribution plate, w.'rd valve 19 closed to the whole of the 16 are provided. Duich suitable construction ao separation chamber 10 into the liquid fed it is possible to introduce different ion exchange areas 1 at different nozzles. Alternatively can Apply fluid pressures. Valve 10 can be partially opened to part of the

For supplying and removing the ionic liquid for transferring the used resin

Exchanger resin are a resin inlet line 8, which can be used for the regeneration system. The liquid

in the middle of filter 4 opens downwards, and a as wedge can also be used to remove suspended

downwardly extending discharge line 14 to remove solids attached to the spent resin

seen adhering to the center of the distribution plate 16,

connected is. The in the ion exchange area 1 by per-

As in Fig. 3 shown, Abirennndüsen 18 and forationcn of the carrier plate 1! inflowing liquid collection nozzles 17 on the distribution plate 16 so that the resin bed pushes upwards. For this reason arranged so that they fall into a certain mutual arrangement during the upward flow of the liquid Have voltage and across the cross-section of the resin column not into the separation chamber 10. If, for example, evenly are distributed. expose the liquid at a rate of

Each of the cut-off nozzles 18 extends axially close to 50 to 60 m ³ / hour. is passed upward, the lower surface of the support plate 11 and is provided with 35 in the ion exchange region 1 and the loading of a resin bed containing a discharge port 18fl in the vicinity of its upper chamber 3 through the liquid end. Advantageously, the direction is urged upward, and the hair particles, which at these plurality of ejection ports 18a set in such an average particle size, for example, that they normally have to be 0.4 mm, become liquid in the tangential contacting one another Direction 40 brings a so-called dense bed of a circle around the axis of the resin discharge line 14 is formed. In this way, the gaps narrowed in the center of the distribution plate 16 between adjacent particles are ejected, thereby arranging. and that all liquid streams in which the efficiency of the ion exchange is increased circulate in the same direction, whereby the liquid or water pushed out on the lower surface of the resin bed 11 with a suitable circumferential speed on the lower surface of the resin bed. subjected to treatment, whereby a treated digkcit swirls along, so that the resin is generated by the un-liquid. If at this time the lower side of the carrier plate is washed away. Due to the distribution of the amount of electricity is not uniform. this swirling liquid becomes the spent resin forming the ion exchange area no more horizontal removed from the bottom of the resin bed and on the 50 layers off. with the result that the quality of the distribution board 16 is depressed. The liquid to be treated is not uniform. Since ever dwindling liquid flows into the resin bed above the partition plate 11 and the Hai zträgerplatte 2 carrier plate 11 through their perforations. have the effect of creating an even flow

Each of the collection nozzles 17 has a discharge opening to create liquid, those described above can

17a. the problems are eliminated to the middle of the bottom of the separation chamber 10 55. By the filter chamber!

is directed. around the liquid to be treated above the filter 4 and a plurality of off

eject ladial. The resin that spreads from the lower support lines 20 evenly on the head of the dei

Side of the carrier plate 11 has been removed. instead of a single treatment column

provided by the conduit ejected from the collecting nozzles, λ may be advantageous

Water flow moved towards the center and then grazed through 60 results obtained.

Discharge line 14 led away, mixed with a While the liquid continuously upwards

Part of the liquid to be treated. The remaining is passed into the resin bed in the ion exchange

Part of the liquid area or band ejected by the collecting nozzles, as described above according to oiei

wedge flows rwar through the separation chamber 10 and pushed through so that. when the breakthrough point is there

Pcrfoialionen the carrier plate in the resin bed above the upper end of the ion exchange bed reached, de

half of the support plate 11. the amount of this liquid begins to lose ions. Hence d *

however, it can be set to a value that liquid coolant passage can be terminated before de

the precipitation and the lightening of the ion caused by the ionic energy begins, and the regenerated and ge

(ύ

rinsed resin must be added. Horizontal layers of resin arranged around each other Continuous operation over a long period of time with a uniform, but differentiated ceiling It is necessary to ensure the interval of activity.

FlßSkeü du ch line for one pass in such a way.

^ bISSS that the distance of the displacement of the 5 pillar are thus all operations inclusive SnSSfuschschicht essentially with the resin separation of the used resin, its transfer amount in the separation chamber 10 or the loading, lowering of the resin bed and supply of the re-Suikkammer supplementary amount added in the generated resin, without using any VwHs stands. In this way, the dimensions of the mechanical devices are controlled by the schicku Skammer3 and the separation chamber 10 carried out in io liquid flow. As a result, can Dependence on the time span of the liquid comminution or breakage of the resin by opening toting, the amount of liquid passed through and closing of valves and the resulting wedge the ion content of the liquid to be treated resin loss can be completely avoided, whereby and similar parameters. Conversely, defects in the device due to the crushed should the time span de. Liquid duct and 15 resins, can be eliminated or reduced. Besides that the amount of liquid is appropriately varied as the department of resin consumed and the When different liquids are used, the regenerated or activated resin is fed Exchange column with chambers 3 and 10 with predetermined formation by a single mechanism Dimensions are supplied to be carried out the stable operation of more even layers ensure over a long period of time. ao resin bed in the ion exchange area always the same

After completion of a liquid-like packing, creating a steady flow of the neriodr the liquid supply is ensured through inlet liquid to be treated. Demolition; 15 interrupted, and the treated liquid will result in the ion exchange capacity of any resinity is by the exchange column in the opposite layer in the same horizontal plane at the in the set direction, i.e. kept by the same value.

upper chamber 3 to lower distribution chamber 13, so far the separation or division of the

The used resin at the bottom of the exchange was carried out satisfactorily in small devices relative to area 1 through perforations in the carrier plate 11, but it had been conveyed up to 7M at T. To these devices large scale of various ZeUDunkTisT'eTn "outflow valve 15a opened to the difficulties accompanying the 30. In contrast, it is possible with liquid to drain into the chambers 10 and 13. The new device according to the invention allows. As a result, the resin bed moves as separate body like a proper amount of the spent resin always rin piston downward until the separation chamber 10 in a uniform layer, inde- Z is stuffed the "-brauchten resin and the previously dependent on the diameter of lonenaustauschin the upper loading chamber 3 introduced resin 35 Thus, the device can move a large amount through perforations of the carrier plate 2 of the liquid, typically water over a down into the exchange area, whereby the extended period of time is evenly treated, emptied of the chamber ion exchange described above

ried resin of the charging chamber 3 together column to combine the regeneration system »st cn with accompanying liquid fed through inlet line 8 to 4 ° regeneration system of the continuous type Because that accompanied by the regenerated resin is more moderate than a regeneration system from the batch liquid through the annular filter chamber 6 and type. There are already many types of this « is led away through outlet line 7, it flows radially to continuous type regeneration systems along the horizontal filter 4 to the outside, so knows, but it is desirable to regenerate that the regenerated resin would break out. and in the same 45 system to reduce the amount of work described below Combine the layer in the loading chamber 3. to achieve the objectives of the present invention will, and to achieve the supply of the regenerated constantly.

Resins - will stop automatically. The ion exchange F 1 g. 4 illustrates an embodiment.

rtüte is now the preferred regeneration system for the start of a new cycle. A ! ^ N ready to celebrate. In this way 50 system comprises a washing column 22 and a ^^ ÄSSSSSctalute a quantity of resin regeneration and rinsing tower 2 * washing tower 22 funktia ^ TKhoben which is just sufficient to Kammei 3 so. that in the cover to be treated snooen, uic _B suspended and adhering to the used resin "

p \ k ^ hekinnt that the activity of the solids in the loading is washed away, and that is consumed. The ion exchange resin contained on the water is reduced together with the liquid in the soil. It is "desirable" that the washing column 22 through the discharge line 14 should have different activities horizontally. Bottom of the ion exchange column (Fig. 1). by Ven Sen and ^ d that each layer has a uniform thickness. til 19 and an inlet conduit 24 e.ngeführt truths ι «absence of the perforated support plate 2 has the washing operation, the valve 27 is closed to length by line 8 together with regenerated 60 a valve 26 is opened so that the Tueeführte from inlet Harr liquid flow the There is a tendency for the liquid exiting the line 24 to flow upwards oi ^ The distribution of the ion exchange resin around the used resin by upwardly disturbing the uppermost part of the area 1 ^ u. Wash by directed electricity. However, from the consumed "Irrnnrniated carrier plate 2 and the ring-shaped resin removed in this way solids are not a uniform distribution through a discharge line 25 and a valve 26." H «ion exchange resin ensured. Discharged together with the liquid. The perforated support plate 2 is used to record that the washing column 22 is used as a backwash as a compensation device when forming. via facility arbc.te!

9 'ίο

After washing, the clean resin is passed through the resin transfer line 41 directly

through line 24 by opening valve 27 by pulling (or through a valve) to the resin inlet line ί

led liquid to be connected to the regeneration and rinsing (Fig. 1),

column 23 transferred. When the resin volume in column 23 varies by inlet line, often by 10 bi <

24 added liquid is insufficient to a 5 15%, depending on the type and concentration of the liquid

create sufficient pressure to depend on the resin with which it comes in contact. As a result

To transfer column 23, an additional line can vary the volume of resin in the column during the

28 can be provided with a valve 29 to stop the operation. Because of this, occurred in conventional

Increase fluid pressure. When the washed regenerators from the continuous

Resin consumed through line 30 of the regeneration type often fluctuates or interrupts the

and rinsing column is supplied, so it is before resin transfer on.

added, an additional amount of the liquid can by using the novel device according to the invention

a conduit including a valve 49, to the bottom of which the fluctuation in the amount of resin is reduced

of the column 23 to guide the upward flow of the den by the time period of the in the »next

To promote resin in column 23. If it is not desired 15 Table I shown work shy vaiiiert wildly around

is to increase the amount of resin circulated per hour or the liquid to be treated in the washing machine

and using regeneration system can decrease a. However, this measure is not

Part of that treated in the ion exchange column is sufficient to reduce the fluctuation in the amount of resin to NuI

Liquid can be used. to diminish.

Preferably, the regeneration and rinsing 20 To solve this problem and around a smooth column 23 in the form of an elongated cylinder, the continuous operation over a long period of time an upper filter chamber 40, a resin feed-in to enable the volume of the resin over chamber 34, a rinsing part 33, a replacement part 32, guide chamber 34 selected so that it comprises a regeneration part 31 and a lower filter of the chamber 39 in the period in separation chamber 10 abge. Typically the column is filled with separated resin plus the maximum variation in resin to a level just below the total resin volume contained in the system is equal to the transfer chamber. A filter 36 in the form Advantageously, the observation window 48 Fuei a wire mesh is provided, the resin transfer chamber between the upper filter to dit chamber 40 and daiin the resin transfer chamber 34 upstream amount of resin present to see,
seen, and a line 38 for collecting rinsing 30 After the completion of the resin transfer wire water is between the rinsing part 33 and Eisatzteil 32 to valve 46 in the water collecting line 38 open, un ordered, with line 38 with a variety of rinsing water to remove. At the same time, rinse water is perforated and fed through a wire mesh through inlet conduit 43 around which metal or synthetic resin is covered in the rinse. To rinse a distributor 33 contained resin. Choosing a main dividing line 37, the line 38 is identical, 35 part of the rinse water is routed through the water collecting line 38 between spare part 32 and regeneration part 31, a part of it is arranged over the spare part to send a suitable regeneration liquid part 32 to the regeneration part 31 to feed zi. In addition, a lower filter 35 is provided in order to prevent the regeneration agent from entering the flushing form of a wire mesh between the regeneration part 33, resulting in the loss of the regeneration part 31 and the lower filter chamber 39. 40 is prevented by means. The resin flushed into the regeneration part is provided and extends through the regeneration agent.
the upper filter chamber 40 and filter 36 and has them The regeneration of the used resin wire opening in a space above the upper level initiated simultaneously with the rinsing operation. Since the Haizes in the flushing part 33. inlet line 30 for the regenerant, which extends to a suitable concentration, has been diluted through the lower filtration, regeneration part 31 flows into the resin bed in the terkammer 39 and the lower filter 35 upwards a plurality of perforations and opens in the vicinity of its center after forations of the distribution line 37 and flows dam above. EmeSpülwasseieeinIaßleitung43, whicha valve47 towards the floor. The introduction of the Re comprises, is connected to the upper filter chamber 40, the generation agent is conducted for a suitable period of time, while a line 42 for discharging the regeneration agent used in the first half of the regeneration period is conducted to the bottom of the and thereafter the introduced regeneration lower filter chamber 39 is connected. agent through dilution water and the liquid

In operation, the washed, dried up Haiz keit from the washing column is printed from the column where

in the lower part of the regeneration and flushing column 55 is prevented by that the spent rain

pressed, and the shark bed contained therein wildly as rierungsiquid during the transfer of the re

The whole is moved upwards by an amount that of the generated resin in the opposite direction Amount is equal to that flows in the period of time in the separation. The liquid to be treated, which can be chosen

chamber 10 in the in F i g. 1; “Uch- the transfer of the used resin into the Re

treatment column is separated, whereby the resin 60 generation part has been introduced, can durcl

in the upper part of the flushing part 33 in the Harzüber- discharge line 42 and valve 44 together with the

guide chamber 34 is moved. The resin in the used regenerant can be sensed.

Resin transfer chamber 34 is then by means of the Haiz amount that is in the Regenerierungstei] or

the rinsing water inlet line 43 contains water supplied to the rinsing part, is preferably the one in de

through transfer line 41 into the one shown in FIG. 1 ge 65 period of time taken from the ion., Is exchange column "

showed ion exchange column discharged. The amount is equal to or a multiple thereof. So

When the above-described regeneration and with a predetermined amount of ver Rinse column combined with the ion exchange column, blue resin is introduced into the bottom of column 23

803 202

and the height of the resin bed in the regeneration part as well as in the rinse part gradually increases, whereby a multi-stage countercurrent type of regeneration and flushing is ensured. This way both the regenerant and the Rinsing water effectively used for economical regeneration and rinsing with high efficiency to accomplish.

Because movement and arrest of the resin in the regeneration system is caused by liquid flow the continuous ion exchange treatment device, the combination of this regeneration system and the ion exchange column described above includes, stably and continuously work over a long period of time, since the percentage of crushed resin is low and since the resin transfer chamber has sufficient space to accommodate a Increase in volume of the shark due to swelling, which has occurred in the case of resin transfer in so far known devices has caused fluctuations. The ion exchange column according to the invention can, when combined with such an excellent regeneration column, be very satisfactory work at an extraordinarily high level of efficiency.

The table below illustrates various Working steps of the combined device.

ίο When the basic procedures automatically through control various measured values that are required for the implementation of this low-level procedure, be sealed by means of a timing device and other necessary measuring instruments, the According to the present invention, a so-called automatic continuous ion exchange treatment is a so-called new Voriichlung execute.

Table of work steps

Exchange column Regeneration
tion part Liquid discharge Sit down Resin precipitation Resin feed Washing tower Rinsing part To wash Pushing out the
Regeneration
middle ice Resin transfer Wait Rain
rier and
Rinsing column Regeneration
mean empathy Wash Resin feed Wait Resin feed Resin transfer

one run

With regard to the following examples of those carried out with the new device according to the invention Treatments, it should be noted that the present invention does not relate to the specific examples is limited, but can be modified in various ways without changing the frame Invention is abandoned.

example 1

A portion of a cation exchange resin manufactured by Misubishi Chemical Industries Ltd., Tokyo, Japan, sold under the trade name "Diaion SKIB", is being converted into an ion exchange treatment column constructed with the method shown in FIG. 1 is identical, introduced, and the column wild with a tricky regeneration system of the batch type connected to treat 4 tons of water (for industrial use), after which the following results are obtained.

Since the total amount of ions in the water to be treated is around ISO ppm under normal conditions, but reaches 200 ppm under abnormal conditions, expressed as potassium carbonate, the amount of resin divided in a period is 12 liters and the working time is 40 minutes under normal conditions has been set. In abnormal conditions vicrdcr. appropriately modified these parameters to correspond to the total ion amount of the treated water. After a continuous trial for one month, no abnormal conditions are noticed in the ion exchange treatment column, and separation and supply of the resin in a uniform shear is achieved at every line. Samples of the treated water are taken at intervals of 30 minutes, and it is found that the water quality is essentially constant during the entire period, ie, e:

becomes a weakly acidic water with about pH 3 er keep. If the treated water is run through an anion exchange resin column, you win get pure water with a resistivity above more than 200,000 ohms.

To regenerate the used Har / es win 6% hydrochloric acid was used at a ratio of ISO g / l of resin consumed.

Example 2

The same procedure as in Example 1 wt; d is repeated, with the exception that an ion congestion column as in FIG. FIG. 1 illustrates and a regeneration system similar to that shown in FIG. 4 is identical, can be used.

The Wassei to be treated is the same industrial water as in Example 1. In this Step Example but additionally vaiiieren> u H _he above heschriebenei variation in the total "nenmenge also Natriumionei

for example, 25 to 75 "." I m to meet these variations, the Capa / iiäl the liaizübeifiihrungskammei the Regeiierierungs- and flush column mn 12 liter (the amount of in each period abgeirennli.ii March) is increased to ^r IS liter, and the working period is set at the set value of 40 minutes over a range of; 5 minutes, which compensates for variations in the volume of the roped influx. The results of continuous operation for one month / own that trol / the considerable change in the composition of the ions in the treated water no problem was observed, neither in the ion exchange system nor in the regeneration system, and essentially the same results are obtained as in Example 1. The amount of regeneration used is shifted to H) March decreased.

B e i s ρ i e 1 3

The new device according to the invention is at applied a system that requires a water purification capacity of 75 tons per hour. the Apparatus comprises a cation exhaust column and an anion exchange column, each combined with a regeneration system, as well as a decarboxylation which is connected between the two pillars. Each of these pillars has one of the features shown in FIG. 1 shown identical construction with an inner diameter of 1400 mm and a length of the shark layer of ! 100 mm. F. in cation exchange resin and an anion exchange resin made by Mitsubishi Chemical Industries Ltd. under the trade name "Diaion SK1 B" (a strongly acidic cation exchange resin) or "Diaion SAlOB" (a strongly basic anion exchanger) are sold in the respective pillars introduced.

Each regeneration system has one of those shown in F 1 g. 4 identical construction shown, and the regeneration and the rinsing column for the cation exchange resin has an inner diameter of 280 mm, a length of Resin layer of 9.5 mm and a volume of the resin transfer chamber of 120 liters. The regeneration and rinsing column for the anion exchange resin is designed so that it has an inner diameter of 370 mm, a length of the resin layer of 10.5 m and a volume of the resin transfer chamber of 225 liters.

The water to be treated is through the Kationenausiauschsäule at a speed of 80 m ³ / hour. passed, and there is a water intermediate product at a speed of 78 m ^{: l} / Sld. to invade. The amount of spent resin separated at each period is 80 liters, which is discharged within 5 to 6 minutes.

The reason that the amount of the water intermediate is get smaller than that of the original Water, lies in the fact that part of the original water is used to make up for that which has been consumed To wash and cover resin and that part of the water intermediate is used for this wild to dilute the regeneration agent.

The resulting water intermediate is passed through the anion exchange column via the decarbonization column passed, the amount of the separated in each period of time in the anion exclusion column resin consumed is 150 liters, which is within V can be carried out for up to 10 minutes.

The working time for each column is set to a value set in the range of 20 to 25 minutes.

The cation content of the water to be treated is 105 to 125 ppm. expressed as CaCO ₃ . the anion content is S5 to 115 ppm (measured after decarbonization), and the SiO ₂ content is'. 15 to 25 ppm. also expressed as CaCO _3. The outflow from the anion static column, on the other hand, is essentially a water that is less than 0.05 ppm

ίο Contains SiO ₂ and has a specific resistance of over 200 (HK) ohms.

The device according to this example is continuous has been operated for two months without any column malfunctioning.

F i g. Fig. 5 shows a modified regeneration and flushing system for the spent resin which includes a rikkwash column 51, a regeneration column 52 of the genstome type and a flush column 53 of the counter siren type

The ion exchange column is fed to the backwash column 51 via line 14 and valve 54 to be backwashed by the upward flow of the liquid. Waste liquid wedge is removed from the backwash column through valve 55. The backwashing step of the spent resin can be performed in a relatively short period of time. Then the valves 36 and 57 are opened to discharge the washed spent resin by means of liquid supplied through valve 56 which is the original or

liquid that has not yet been treated can be transferred to the regeneration column 52.

A suitable regeneration agent or liquid is added to the bottom of the Regeneration column 52 from a reservoir 58

fed by a pump 59, a valve 60 and a filter 61 at the bottom of the column. The regeneration liquid then flows up through a resin bed in column 52 and is ultimately discharged through a filter at the top of the column and valve 63. The regenerated resin is then transferred to the flushing column 53, which is provided together with column 52 in a U-shaped arrangement. The connection 64 between the two columns 52 and 53 has a cast cross-section which is sufficient to allow the free transfer of the regenerated resin. For example, the cross-section of connection 64 can be the same as or slightly smaller than that of column 52 or 53. The regenerated resin transferred to the rinsing column is rinsed with water which has been obtained by the process shown in FIG. 1 and is circulated by means of a pump 65 through a valve 66, an upper filter 67, the resin bed in column 53, a lower filter 68 and a valve 69. The regenerated and flushed resin is then returned through line 8 to the ion exchange column (FIG. 1). The transport of the resin through the backwashing column 51, the regeneration column 52 and the rinsing column 53 and the supply of the regenerating agent and the rinsing water can be carried out automatically by controlling various values in accordance with a prescribed program.

For the in FIG. The regeneration system shown in FIG. 5 is characteristic that the regeneration column 52 of the countercurrent type in which the spent resin flows nacii below, and the washing tower 53 of the countercurrent type, wherein the regenerated resin flows upward, are arranged in a U-shaped configuration,

by the unleien linden of it by means of a connector 64 are connected with a large cross-section, and that the Rüekwaschsäule 51 above the Regeneration column is arranged. This arrangement \ ereinf '. not just the resin chambers and the har / -iiustrags. process for the respective columns, but also makes a valve in the connection piece unnecessary, so that Harzzerkleinerui.g due to the way it works of the valve is prevented. Since the reverse column 51 also has the effect. shredded Removing resin, solid contaminants, and gas from the spent resin results in germ variation in the pressure drop of the shark bed. so that fluctuations in the amount of electricity and the quality of the treated Liquid can be essentially eliminated. Oh, the regeneration and rinsing columns as a mosquito unit formed as it is in one U-shaped configuration, the overall height of the system is not excessive. The top End of column 53 is bulged to provide a resin transfer chamber of sufficient volume create what happens in exactly the same way as in connection with FIG. 4 described.

Example 4

This example illustrates an application of the invention. Vo. towards a system with a water treatment capacity of 120 tons per hour. In this example, this includes System a cation exchange column, an anion exchange column, regeneration systems that work with these Columns are each connected, and a Decarbonisiersäuie, which between the anion and the cation exchange column is switched. Each of these ion exchange columns has one of the functions shown in FIG. I shown identical ones Construction with an inner diameter of 1850 mm and a height of the resin layer of 1100 mm. These columns are each coated with a cation exchange resin »Diaion SKIB« or with an anion exchange resin "Diaion SA20B" filled, both from Mitsubishi Chemical Industries Ltd. sold Η ,,,,,, α entered 310 liters. The Rc «ener.crun, wi.le

^ "the Anione.uui exchange resin has a" ". ·" -

L-h knife of 605 mm and external resin layer; - "Hey

, '"(O mm. And the water features have _ e.nen

Inncndim-hmesse, of 750 mm. a lar / sch.cn-Mohe

"^ Omundeinllarzüberführungu ^ chamberw ,,, :: ^

- ,, "61SL Her. / .. treating water will. ,.H

di, ion exchange column with emc, Gesch, .., _lg _

wedge of 140 m < S.d. sent, and e <becomes IxIk .., cites

, ο water as / - ,, gift product. in a Mengei ^ rom v., "ir nr'StJ. receive. Consumption resin ν ■,], η a Meime of 205 liters for each Ze.tspa .. ·, ihgetrennt, and that separate resin is, n K b _-!; , U- slots discharged. Oer (irund dar, r that the .., "ge

,. _{d,. s aN} intermediate obtained beha ,, u _n water! less than that of ursp- ^ ghchen What.. _ls! , Is gut, that part of the original V, r, is used to wash the spent resin, and to transport and that part of s u, as

Zwischenp.od.ikt accruing treated V .., ssers as a thinning agent for the regeneration agent is used. The intermediate product

ÄÄÄ * «· from 132 m» / S «.l. to, 5 of the anterior exchange mill, and treated ^ _essentially pure water is in one

Mass flow of _; 120 ^^^ ^ Z't

span become 410-LHer ^ «brauc'ites Han ^ from the

Anion exchange column separated and there ^^ separated 3 "separated spent resin w, d m 3 to 5 sts

carried out. E, n part of the al Zw ^ h ^ ° ^dukl ^

falling treated water ; ^will

the Ha.z used "^ = ™ /

and dn part of the ^rane
the amount of regeneration

to

and

ld «regeneration system has one of the methods shown in FIG. 5 identical construction shown. The inside diameter of the regeneration column for the cation exchange resin is 495 mm, and the height of the resin layer is 4.9 m. The water flushing column has a Inner diameter of 560 mm and a resin layer height of 3.0 m, the volume of the resin transfer

Working group auie α eser uciu Beieich from 25

are set in such a way that they are calibrated at 2 ₃

to 30 minutes l ^ie ß · ^s ". _nft

The original water contains UO b s 30 ppm

Cations expressed as ^C ? V ^ ⁹ ; * '"^ S Anioj« Ojch ^ Dec ^

while that emerging from the AnioMMUrta ^ hsiule Water »m essential r« ^ e m t

e.nem SO ₂ -content less ^than ^ ¹ PP ^m "m is fishing resistance is over 100 000 01 m1

The device according to the previous example was also run continuously for 2 months without a defect in a column.

1 sheet of drawings

Claims (5)

Patent claims: 1. Device for the treatment of liquids by means of an ion exchange resin with a linear ion exchange column with a countercurrent flow bed in which the ion exchange resin. is fed in the upper column section, from where it flows downward as a bed, and in which the liquid to be treated is fed to the bottom of the column v. ird, \ on where it goes up through the fluid bed>iri> mt, and with a countercurrent Regencralionssäuie. in which the ion exchange resin. that in the! 11Naussalian column is introduced, regenerated and washed out and fed back to the upper section of the animal ion exchange column, characterized by the fact that at the bottom of the ion exchange column (1) there is a separation chamber (10) with nozzles (17, 18) and a resin transfer chamber (34) with a capacity for the predetermined amount of ion exchange resin are provided at the top of the regeneration column. 2. Apparatus according to claim 1, characterized in that a washing column (22, 51) for the Resin is inserted between the separation chamber (ίθ) of the ion exchange column and the regeneration column. 3. Apparatus according to claim 1 or 2, characterized in that the sennkammer (10) is separated from the lower end of the fluidized bed by a perforated support plate (11) and equipped with a number of liquid-dispensing nozzles (18) near the lower limit of the fluidized bed and a plurality of collecting nozzles (17) are provided, downstream of which a discharge line (14) intended for the separated used resin is connected. 4. Apparatus according to claim 3, characterized in that each of the liquid dispensing Nozzles (18) is aligned tangentially to a concentric circle around the axis of the separation chamber (10). 5. Device according to one of .Ansprüche 1 to 4, characterized in that the ion exchange column is equipped at the upper end with a charging chamber (3) which is separated from the fluidized bed by a perforated charging carrier plate (2) that the charging chamber (3 ) has a volume which corresponds essentially to that of the predetermined amount of resin, that a feed line from the regeneration column for the regenerated resin with accompanying liquid opens approximately in the middle of the charging chamber (3) and outlets (6, 7) for withdrawing the accompanying liquid the loading chamber (3) are provided on the periphery.