WO2011001871A1 - イオン交換装置、その製作方法及び設備並びにイオン交換樹脂層の形成方法及び装置 - Google Patents
イオン交換装置、その製作方法及び設備並びにイオン交換樹脂層の形成方法及び装置 Download PDFInfo
- Publication number
- WO2011001871A1 WO2011001871A1 PCT/JP2010/060649 JP2010060649W WO2011001871A1 WO 2011001871 A1 WO2011001871 A1 WO 2011001871A1 JP 2010060649 W JP2010060649 W JP 2010060649W WO 2011001871 A1 WO2011001871 A1 WO 2011001871A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ion exchange
- exchange resin
- pump
- container
- water
- Prior art date
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- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 title claims abstract description 256
- 239000003456 ion exchange resin Substances 0.000 title claims abstract description 241
- 229920003303 ion-exchange polymer Polymers 0.000 title claims abstract description 241
- 238000005342 ion exchange Methods 0.000 title claims abstract description 145
- 238000000034 method Methods 0.000 title claims abstract description 50
- 230000008569 process Effects 0.000 title abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 133
- 239000003957 anion exchange resin Substances 0.000 claims abstract description 33
- 239000003729 cation exchange resin Substances 0.000 claims abstract description 30
- 238000000746 purification Methods 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims description 93
- 229920005989 resin Polymers 0.000 claims description 93
- 238000011049 filling Methods 0.000 claims description 78
- 239000012530 fluid Substances 0.000 claims description 62
- 238000004519 manufacturing process Methods 0.000 claims description 46
- 239000011268 mixed slurry Substances 0.000 claims description 37
- 239000002002 slurry Substances 0.000 claims description 30
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 27
- 239000012498 ultrapure water Substances 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 12
- 150000002500 ions Chemical class 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 9
- 238000003809 water extraction Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 6
- 238000005429 filling process Methods 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims 3
- 230000003749 cleanliness Effects 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 6
- 238000003860 storage Methods 0.000 abstract description 6
- 238000012360 testing method Methods 0.000 abstract description 4
- 230000008929 regeneration Effects 0.000 description 10
- 238000011069 regeneration method Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 229940023913 cation exchange resins Drugs 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000012492 regenerant Substances 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 238000005341 cation exchange Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/02—Loose filtering material, e.g. loose fibres
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/04—Non-contaminated water, e.g. for industrial water supply for obtaining ultra-pure water
Definitions
- the present invention relates to a method and equipment for manufacturing an ion exchange apparatus by filling an ion exchange resin into a container, and in particular, an ion exchange apparatus suitably used for manufacturing an ion exchange apparatus used in an ultrapure water production process or the like. It relates to a manufacturing method and equipment.
- the present invention relates to an ion exchange apparatus manufactured by this method and equipment.
- the present invention also relates to a method and an apparatus for forming an ion exchange resin layer by filling an ion exchange resin in a container.
- the present invention relates to an ion exchange apparatus having an ion exchange resin layer formed by this method and apparatus.
- a cation exchange resin, an anion exchange resin, a mixed resin thereof, or a mixed resin of these and other resins is filled in a container to form an ion exchange resin layer, and a liquid to be treated is used.
- the ion exchange process is performed by passing the liquid. After the ion exchange resin layer is saturated, the flow of the liquid to be treated is stopped, then the regenerant is passed through to regenerate the ion exchange resin layer, and further, the washing water is passed through the water to be washed.
- Many ion exchange devices, particularly stationary ion exchange devices, that resume liquid exchange and resume ion exchange treatment have been used.
- the ion exchange resin is regenerated and reused.
- a reusable ion exchanger In the latter case, the ion exchange resin is regenerated for each recovered unit, and the ion exchange resin is collected from the unit and regenerated. Some of them are attached to an exchange device to perform ion exchange processing.
- Patent Document 1 Japanese Patent Laid-Open No. 9-705466 discloses an ion exchange unit that is formed by filling a main body container with an ion exchange resin and connecting a protruding pipe from the container to a raw water pipe, a treated water pipe or the like.
- FIG. 2 shows an ion exchange unit U described in the same item.
- the ion exchange unit U is filled with a conditioned ion exchange resin 2 in a container 1 having an opening 1a.
- a lid 6 is attached to the opening 1a.
- the lid 6 is provided with an ion exchange resin inlet 3, and a raw water inlet pipe 5 and a treated water outlet pipe 4 are provided in a penetrating manner.
- the raw water introduction pipe 5 is inserted to the bottom in the container 1, and a strainer 5a is provided at the lower end thereof.
- the strainer 4a attached to the lower end of the treated water outlet pipe 4 is located in the upper part of the container 1.
- the ion exchange resin 2 is filled into the container 1 through the resin inlet 3.
- the inlet 3 is then sealed.
- the resin introduction port 3 is used for draining water, venting air, etc. at the time of connection, but is normally closed at the time of ion exchange treatment.
- This ion exchange unit is sealed in a state of being disconnected at the positions of the couplings 4b and 5b, and is transported to the site and installed.
- the couplings 4b and 5b are connected to the expansion joints 7 and 8 to introduce raw water and take out treated water (ultra pure water) (paragraphs 0021 to 0022).
- an ion exchange resin there are a case where a cation exchange resin or an anion exchange resin is filled alone, and a case where both are mixed and filled in a volume ratio of about 1: 3 to 3: 1 (paragraph 0018). ).
- the ion exchange unit U attached to the ion exchange system introduces raw water from the raw water flow path (not shown) of the ion exchange apparatus into the container 1 through the raw water introduction path 4 and the first strainer 4a, and the ion exchange resin layer 2
- the ion exchange is performed by passing the water, and the treated water is collected by the second strainer 5a and taken out from the treated water outlet 5 through a treated water channel (not shown) of the ion exchanger.
- the ion exchange unit U is removed with the couplings 4b and 5b and replaced with a new unit, and the ion exchange process is continued.
- the used ion exchange unit U is transported and collected in the removed state, and if necessary, the ion exchange resin is taken out and regenerated, and the regenerated ion exchange resin is filled in the container 1 again to form an ion exchange device. It is again subjected to ion exchange treatment.
- the ion exchange resin is dispersed in water and introduced in the form of a slurry, and the accompanying water is separated and drained by the strainers 4a and 5a. . In this method, it was difficult to fill the main body container 1 with a certain amount of ion exchange resin.
- Patent Document 4 Japanese Patent Application Laid-Open No. 2002-28501
- an ion exchange resin is accommodated in an ion exchange resin transfer container and transported to the site.
- the ion exchange device is filled on site and used for ion exchange.
- An example is shown in which the ion exchange resin is taken out from the exchange device, accommodated in the ion exchange resin transfer container and transported to the installation location of the regenerator, and after regeneration, the ion exchange resin is again accommodated in the ion exchange resin transport container and transported to the site.
- a pipe connected to a filter member (corresponding to a strainer) in the container is provided.
- the ion exchange resin is dispersed in water and introduced in a slurry state, and the entrained water is separated by the filter member.
- the ion exchange resin filling amount is made constant.
- the ion exchange resin is filled in the liquid phase and used, and the characteristics are displayed and processed based on the volume of the ion exchange resin layer. It is required to have a certain capacity in a state existing in the phase. In this case, the ion exchange resin is dispersed in water and introduced into a container in the form of a slurry and filled. However, since the concentration of the ion exchange resin in the slurry cannot be made constant, A certain amount of resin cannot be filled.
- the prefilled resin is weighed, and the method of filling it is to measure a certain amount of the recycled resin in advance, disperse it in water and introduce it into a slurry form.
- the measurement of the weight is affected by the amount of water present, so accurate measurement is actually difficult.
- the method of visually measuring the resin filling amount it is necessary to repeatedly stop the liquid flow and visually measure, and when the container becomes large and the resin filling amount increases, accurate measurement becomes difficult. There are problems such as.
- the fullness of the ion exchange resin in the container may be detected by increasing the pressure of the supply slurry, and the supply of slurry may be stopped.
- the supply of slurry is stopped by accurately detecting the increase in pressure. In order to achieve this, a complicated device, a control mechanism, and the like are required, and it is difficult to form a packed bed having a uniform packing density by separating the ion exchange resin in the slurry from the entrained water. There is.
- Patent Document 5 Japanese Patent Application Laid-Open No. 2002-221160 describes a pneumatically driven diaphragm pump as a fluid pressure driven pump.
- This pneumatically driven diaphragm pump is a double diaphragm pump, with two diaphragms provided in each of the pump chambers, joined to the tip of the shaft that slides through the intermediate wall, and is integrated so that it can reciprocate. Yes. However, it is not shown that the ion-exchange resin filling amount is constant.
- Patent Document 6 Japanese Patent Laid-Open No. 2007-305019
- the air pressure for driving the pump reaches a predetermined pressure
- the air pressure acting on the pump is released and the driving of the pump is stopped.
- the control mechanism is shown.
- this control mechanism is used to stop the pump drive by detecting an increase in air pressure when the air pressure for driving rises due to damage to the diaphragm, etc. There is no indication that the amount is constant.
- Patent Documents 2 and 3 describe a method for purifying an ion exchange resin and a drug therefor.
- ultrapure water is used for cleaning semiconductor products and other uses, but the demand for the quality of this ultrapure water is becoming increasingly severe.
- the metal concentration is 1 ppt or less, and in some cases, 0. Ultra high water quality of 1 ppt or less may be required.
- the ion exchange device is filled with highly purified ion exchange resin in order to prevent leakage of metals and the like from the ion exchange device.
- the first object of the present invention is to provide an ion exchange apparatus manufacturing method and equipment in which contamination of the ion exchange resin by dust in the air is prevented, and an ion exchange apparatus manufactured by this method and equipment.
- the present invention can form an ion exchange resin layer by filling a container with a certain amount of ion exchange resin accurately and in a short time with a simple mechanism and simple operation.
- Another object of the present invention is to propose an ion exchange resin layer forming method and apparatus capable of preventing clogging of piping and the like, and an ion exchange apparatus having an ion exchange resin layer formed by this method and apparatus.
- a method and facility for manufacturing an ion exchange apparatus in which a purified ion exchange resin is filled in a container to produce the ion exchange apparatus, and a filling step of filling the container with the ion exchange resin is performed in a clean room. It is characterized by being performed by.
- the manufacturing method and equipment of the ion exchange device of the second aspect are the first aspect, wherein the ion exchange resin is purified without being brought into contact with the atmosphere, and transferred to the filling step via the pipe without being brought into contact with the atmosphere. It is characterized by that.
- the manufacturing method and equipment of the ion exchange device of the third aspect are the same as those of the first or second aspect, wherein a plurality of purification equipments for performing the purification treatment are provided in parallel, and the same kind of ion exchange resin is used in one purification equipment. Only different types of ion exchange resins are processed, and different types of ion exchange resins are processed in different purification facilities.
- the manufacturing method and equipment of the ion exchange device of the fourth aspect are the third aspect, wherein after purifying a plurality of types of ion exchange resins in different purification equipments, they are weighed in separate measuring tanks, and then mixed in a mixing tank. It mixes and fills the said container, It is characterized by the above-mentioned.
- the manufacturing method and equipment of the ion exchange device according to the fifth aspect are characterized in that, in any one of the first to fourth aspects, the cleanliness of the clean room is class 10,000 or less.
- the manufacturing method and equipment of the ion exchange device according to the sixth aspect are the ultra-pure water in the clean room in the ion exchange device filled with the ion exchange resin in any one of the first to fifth aspects. Analyzing the effluent water from the ion exchange device, the ion exchange device is inspected.
- the manufacturing method and equipment of the ion exchange apparatus according to the seventh aspect are characterized in that, in the sixth aspect, the effluent water is analyzed in a clean room with a cleanliness of class 1000 or less.
- the cleanliness of the clean room of the present invention is expressed by the number of suspended particulates of 0.3 ⁇ m or more in a volume space of 1 cubic foot (1 cubic foot).
- Class 10,000 is in 1 cubic foot. 10,000, class 1,000 indicates that there are 1,000 particles in one cubic foot.
- the manufacturing method and equipment of the ion exchange apparatus since the filling process for filling the container with the ion exchange resin is performed in the clean room, dust in the air is mixed into the ion exchange apparatus in this filling process. Is prevented. Therefore, by using an ion exchange device manufactured by this method and equipment, it is possible to produce ultrapure water with good water quality.
- the present invention is particularly suitable as a manufacturing method and equipment for an ion exchange polisher (non-regenerative ion exchange apparatus) of a subsystem (secondary pure water system) among ultrapure water production apparatuses.
- the present invention is particularly suitable as a production method and equipment for an ultrapure water production apparatus for producing high purity ultrapure water, for example, an ion exchange apparatus for an ultrapure water production apparatus used for wafer production, semiconductor production, etc. .
- an ultrapure water production apparatus having an ion exchange device manufactured by the method and equipment of the present invention it becomes easy to produce ultrapure water having a metal concentration of 1 ppt or less, further 0.1 ppt or less.
- the ion exchange resin since the ion exchange resin does not come into contact with the atmosphere in the purification step and the subsequent transfer step, it is possible to prevent dust in the air from being mixed into the ion exchange resin in these steps.
- different types of ion exchange resins are refined by different purification equipment, so that different kinds of ion exchange resins are prevented from being mixed into the ion exchange resin.
- the measuring tank is also separated according to the type of ion exchange resin, even a mixed bed type ion exchange apparatus can be mixed and filled with ion exchange resins as prescribed.
- the cleanliness of the clean room is preferably class 10,000 or less.
- the water is passed through the ion exchange device filled with the ion exchange resin, and the quality of the ion exchange device can be ensured because it is shipped after the quality of the effluent water is inspected.
- the inspection accuracy is high.
- An ion exchange resin layer forming method and apparatus includes introducing a mixed slurry of an ion exchange resin and water into a container, separating the water with a strainer, and discharging the water from the container. And an ion exchange resin layer forming method and apparatus, Supply mixed slurry of ion exchange resin and water to container by fluid pressure driven pump, When the fluid pressure for driving the pump reaches a predetermined pressure, the fluid pressure acting on the pump is released and the driving of the pump is stopped.
- the method and apparatus for forming an ion exchange resin layer according to the ninth aspect is the eighth aspect, wherein when the fluid pressure for driving the pump reaches a predetermined pressure, the fluid pressure acting on the pump is released and the driving of the pump is stopped. After that, the driving of the pump is restarted, and when the fluid pressure for driving the pump reaches the predetermined pressure again, the fluid pressure acting on the pump is released and the driving of the pump is stopped.
- the method and apparatus for forming an ion exchange resin layer according to a tenth aspect is the raw water introduction path where the container is connected to the first strainer, the treated water outlet path where the container is connected to the second strainer, and the resin introduction in the eighth or ninth aspect.
- a mixed slurry is introduced into the container through the resin introduction path, and the water is separated by the first and / or second strainer and discharged from the raw water introduction path and / or the treated water extraction path.
- an ion exchange resin layer is formed in the container.
- An ion exchange resin layer forming method and apparatus is the method according to the eighth to tenth aspects, wherein the fluid pressure driven pump is a pneumatically driven pump, and the pump driving air pressure reaches a predetermined pressure when the pump driving air pressure reaches a predetermined pressure.
- a control mechanism for releasing the air pressure acting on the pump and stopping the driving of the pump is provided.
- a pneumatically driven diaphragm pump is suitable as the fluid pressure driven pump.
- the ion exchange resin is preferably a mixed resin of a cation exchange resin and an anion exchange resin.
- the anion exchange resin and the cation exchange resin are separately purified and weighed, and then mixed and filled into a container.
- the anion exchange resin is received and stored in a dedicated receiving tank 111 from a flexible container bag or the like.
- the anion exchange resin in the receiving tank 111 is sent to a purification tower (conditioning tower) 114 via a pump 112 and a pipe 113.
- the ion exchange resin is purified with ultrapure water and conditioning chemicals.
- Various conditioning chemicals such as those described in Patent Documents 1 to 3 can be used.
- the refined wastewater is sent to a recovery system (not shown), processed, recovered as ultrapure water, and reused.
- the same process is performed also in the refinement
- the purified anion exchange resin is sent to the measuring tank 119 via the pipe 115, the storage tank 116, the pump 117, and the pipe 118.
- the cation exchange resin is received in a dedicated receiving tank 121, sent from there to a purification tower 124 via a pump 122 and a pipe 123, purified, and then purified through a pipe 125, a storage tank 126, a pump 127 and a pipe 128. To the weighing tank 129.
- These measuring tanks 119, 129 and the subsequent mixing tanks 130 are installed in a clean room 141 having a cleanness of 10,000 or less.
- the anion exchange resin and the cation exchange resin weighed in a predetermined amount in the measuring tanks 119 and 129 are introduced into the mixing tank 130 through the dedicated pipes 119a and 129a, respectively, and mixed.
- the mixed ion exchange resin is sent to the container 133 via the pump 131 and the pipe 132 and filled.
- As the container 133 a container having the same configuration as that shown in FIG. 2 is used.
- the ion exchange resin is filled into the container 133 from the resin inlet of the container 133 to form an ion exchange apparatus.
- the resin inlet is sealed. Thereafter, the ion exchange device is sent to an inspection process in the clean room 141.
- ultrapure water is introduced from the raw water inlet provided in the container 133 through the pipe 135, and the treated water taken out from the treated water outlet is analyzed in the analysis chamber 142 through the pipe 136. It is sent to the device 137 and the water quality is analyzed.
- the inspection wastewater is discharged to the recovery system via the pipe 138. If the inspection result is acceptable, the raw water inlet and the treated water outlet of the container 133 are sealed and sent out of the clean room 1141 through the clean room inlet / outlet 143.
- the rejected ion exchange device is also taken out from the entrance / exit 143 to the outside of the clean room 141.
- the analysis chamber 142 is a clean room with a cleanness of 1000 or less.
- the filling process of filling the ion exchange resin into the container 133 is performed in a clean room 141 having a cleanness of 10,000 or less. It is prevented from entering the apparatus. Therefore, ultrapure water with good water quality can be produced by using the ion exchange device thus produced.
- the anion exchange resin and the cation exchange resin are purified so that they do not come into contact with the atmosphere in the purification towers 114 and 124, and then the pipes 115, 118, 125, 128, and the measurement tanks 119, 129 and the mixing tank 130 are weighed and mixed so as not to come into contact with the atmosphere. Therefore, in these transfer, measurement and mixing processes, dust in the air may be mixed into the ion exchange resin. Is prevented.
- the anion exchange resin and the cation exchange resin are respectively transferred using dedicated receiving tanks 111 and 121, purification towers 114 and 124, storage tanks 116 and 126, measuring tanks 119 and 129, pipes and pumps. In this process, different ion exchange resins are prevented from being mixed into the ion exchange resin.
- the anion exchange resin and cation exchange resin which are purely a single kind and not mixed with different types of ion exchange resins, are weighed and mixed and filled into the container 133, the anion exchange resin and cation exchange are regulated as specified.
- a mixed bed type ion exchange apparatus in which resin is mixed and filled can be manufactured.
- ultrapure water is passed through an ion exchange device filled with an ion exchange resin, and the quality of the effluent water is inspected before shipment. Therefore, a high-quality ion exchange device can be reliably shipped. it can. Moreover, since this water quality test is performed in the clean room 142 having a cleanness of class 1000 or less, the test accuracy is high.
- the anion exchange resin and the cation exchange resin are processed and transferred in the dedicated receiving tank 111 to weighing tank 119 and the receiving tank 121 to weighing tank 129, respectively.
- install a dedicated receiving tank to weighing tank line for each part number and treat the anion exchange resin in the line dedicated to each part number.
- cation exchange resins having different product numbers a dedicated line is provided for each product number, and processing is performed using the dedicated line for each product number. In this way, it is possible to prevent anion exchange resins having different product numbers from being mixed into the anion exchange resin, and cation exchange resins having different product numbers from being mixed into the cation exchange resin.
- the anion exchange resin and the cation exchange resin are weighed in the measuring tanks 119 and 129, mixed in the mixing tank 136, and filled in the container 133, but only the anion exchange resin from the measuring tank 119 or
- An anion exchange device or a cation exchange device may be manufactured by filling the container 133 with only the cation exchange resin from the measuring tank 129.
- Example 1 an ion exchange apparatus was produced in the same manner as in Example 1 except that an ion exchange apparatus production facility having a configuration in which the clean room 141 was not installed was used, and a water flow test was performed. Table 1 shows the water quality of the ion exchanger effluent collected at 24 hours.
- the ion exchange resin layer is an ion exchange resin layer formed on an ion exchange device such as a pure water production device, an ultrapure water production device, a wastewater treatment device, or an ion adsorption device, and is a fixed type Examples thereof include an ion exchange device, a unit exchange type ion exchange device, and an ion exchange resin layer provided in a resin exchange type ion exchange device using an ion exchange resin transfer container. Also, an ion exchange resin filling unit used in the above unit exchange type ion exchange device, an ion exchange resin transfer container used in a resin exchange type ion exchange device, an ion exchange resin layer formed in a container such as a resin storage tank, etc. Is also a target. In these, the ion exchange resin layer formed in the ion exchange resin filling unit used for a unit exchange type ion exchange apparatus is suitable for object.
- the ion exchange resin constituting the ion exchange resin layer examples include cation exchange resins, anion exchange resins, chelate resins, other selectively adsorptive resins, mixed resins thereof, or mixed resins of these with inert resins and other resins. And granular resin. These resins may be new resins or reused resins. In any case, it is desirable to introduce and fill the recycled resin into the container to form an ion exchange resin layer.
- the container for filling the ion exchange resin is not particularly limited, and can be filled as it is into a container that is required to form an ion exchange resin layer.
- Such containers are used in fixed, resin exchange, ion exchange towers of other ion exchange devices, ion exchange resin filling units used in unit exchange type ion exchange devices, and resin exchange type ion exchange devices.
- Examples include an ion exchange resin transfer container, a resin storage tank, and other containers.
- a constant volume container is suitable so that a constant volume of resin is filled at a constant packing density and a constant volume of ion exchange resin layer is formed when the resin is full.
- Examples of such a container include an ion exchange resin filling unit used in a unit exchange type ion exchange apparatus.
- a resin introduction path for introducing a mixed slurry of ion exchange resin and water into the container, a strainer for separating entrained water in the container, and a separated water discharge for discharging the separated water from the container
- a container having a filling means such as a passage is preferable, and a container having a constant internal volume in a state where these filling means are provided is preferable.
- a container not provided with these filling means may be used, but in this case, the resin can be filled by attaching these filling means.
- a container is provided with a raw water introduction path that connects a container to the first strainer, a treated water extraction path that connects to a second strainer, and a resin introduction path for ion exchange processing. If one is present, one or both of these can be used as the filling means.
- the strainer preferably has an opening of 0.1 to 0.3 mm so that an ion exchange resin having a particle size of 0.4 to 0.5 mm does not flow out.
- a mixed slurry of ion exchange resin and water is introduced into a container and filled with the ion exchange resin, and water is separated from the strainer and discharged from the container, whereby the ion exchange resin layer is formed in the container.
- the mixed slurry of the ion exchange resin and water is supplied to the container by the fluid pressure driven pump and the inside of the container is filled with the ion exchange resin by discharging the separated water, the discharge pressure of the pump becomes high, Accordingly, the fluid pressure for driving the pump also increases. For this reason, when the fluid pressure for driving the pump reaches a predetermined pressure, the fluid pressure acting on the pump is released to stop the driving of the pump and form an ion exchange resin layer having a certain capacity in the container. Can do.
- the capacity of the ion exchange resin is generally set to 10 to 20 minutes until the ion exchange resin is poured into pure water (ultra pure water) and the resin layer is not changed. It is the volume measured in the settling state.
- the capacity of the ion exchange resin is measured in a state where the mixed resin is put into pure water (ultra pure water) and left to settle. Capacity.
- the ion exchange resin Since the ion exchange resin is filled in a state where the mixed slurry is pressurized, the filling density of the ion exchange resin layer formed in the container is increased, and therefore the capacity of the resin constituting the ion exchange resin layer is It may be larger than the volume of the resin corresponding to the volume. In this invention, it fills so that the capacity
- the mixed slurry of ion exchange resin and water is a slurry in which the above ion exchange resin and water are mixed.
- a preferable mixing ratio of the ion exchange resin and water is a volume ratio of the ion exchange resin and water in a state where a water phase is formed in the surroundings (state in which the water is allowed to settle and does not separate water) (70:30) to ( 90:10).
- the mixed slurry of the ion exchange resin and water is pressurized with a fluid pressure driven pump and introduced into the container to be filled.
- the supply pressure for supplying the mixed slurry to the container that is, the discharge of the pump
- the pressure is preferably such that the resin filling operation is easy and the resin is uniformly filled without being crushed, and is generally within a range of 0.2 to 0.7 MPa. it can.
- the mixed slurry is supplied to the container with such a pump discharge pressure, and when the fluid pressure for driving the pump reaches a predetermined pressure, the fluid pressure acting on the pump is released and the driving of the pump is stopped.
- a certain volume of ion exchange resin layer can be formed inside, but the packing density may be uneven, and an ion exchange resin layer with a completely uniform packing density must be formed in the first filling operation. May be difficult. Therefore, after stopping the pump by a single filling operation, the pump is restarted and the slurry is supplied, and the fluid pressure acting on the pump is released when the fluid pressure for driving the pump reaches the predetermined pressure again. By stopping the driving of the pump, an ion exchange resin layer having a uniform filling density can be formed.
- the pump after stopping the pump drive in the first filling operation, it is preferable to leave the pump for a certain time, for example, 1 to 20 minutes, preferably 5 to 10 minutes, and then restart the drive of the pump.
- the pump can be stopped and driven only once.
- a pump having a control mechanism for releasing the fluid pressure acting on the pump when the fluid pressure for driving the pump reaches a predetermined pressure can be used.
- the fluid pressure for driving the pump increases as the pushing pressure of the slurry increases.
- the pressure acting on the pump is automatically released, so that the pump can be stopped with a sufficient amount of ion exchange resin.
- a control mechanism that detects the pump discharge pressure and controls the pump to stop, or a mechanism that automatically stops the pump when the pump discharge pressure becomes high, is difficult in a resin-water mixture system.
- complicated mechanisms and operations are required.
- the fluid pressure for the pump drive increases sensitively in response to the increase in the pump discharge pressure due to the resin being full. If the pressure is controlled, the pump can be stopped in response to a full resin.
- the fluid for driving the pump does not contain a solid material such as resin, so that the configuration of the device, the operation operation, and the like can be simplified.
- the configuration and operation of the equipment can be further simplified, and the intake and discharge into the system can be facilitated, and precise control can be performed in accordance with the rules.
- Pneumatically driven pumps are preferred as fluid pressure driven pumps, and the application of air pressure as fluid pressure is easy to generate, handle, discard, etc., and because of compression during operation, there is little damage due to impact of resin, etc. There are advantages.
- the pneumatic drive pump may be a reciprocating piston type or the like, but is preferably a pneumatic drive diaphragm pump.
- the impact on the resin can be reduced, so that damage to the resin can be further reduced, control is easy, and filling is performed with an accurate filling density to form an ion exchange resin layer with a constant capacity. be able to.
- a container having a raw water introduction path connected to the first strainer, a treated water extraction path connected to the second strainer, and a resin introduction path as a container for example, an ion exchange resin filling unit used in a unit exchange type ion exchange apparatus Is used, the mixed slurry of ion exchange resin and water is introduced into the container through the resin introduction path, the water is separated by the first and / or second strainer, and discharged from the raw water introduction path and / or the treated water extraction path.
- an ion exchange resin layer can be formed in the container.
- the container in which the ion exchange resin layer is formed in this manner can be attached to the ion exchange apparatus as it is, and the ion exchange treatment can be performed by passing the liquid to be treated. After saturation, the container is recovered and the resin is recovered. Can be regenerated and refilled and used repeatedly.
- the ion exchange resin layer to be formed is formed of an impurity introduced by a target ion exchange device such as a pure water production device, an ultrapure water production device, a wastewater treatment device, or an ion adsorption device.
- a target ion exchange device such as a pure water production device, an ultrapure water production device, a wastewater treatment device, or an ion adsorption device.
- an ion exchange resin layer is formed using pure water or ultrapure water corresponding to the required purity as the water used for transportation, and the filling operation is performed in a dust-free environment such as a clean room. Preferably it is done.
- the mixed slurry of ion exchange resin and water is introduced into the container, and the water is separated from the strainer and discharged from the container.
- a mixed slurry of ion exchange resin and water is supplied to a container by a fluid pressure driven pump, and the fluid pressure acting on the pump is reached when the fluid pressure for driving the pump reaches a predetermined pressure. Since the pump is stopped and the ion exchange resin layer is formed, the ion exchange resin is filled in a container accurately and in a short time with a simple mechanism and simple operation. An exchange resin layer and an ion exchange device having this ion exchange resin layer can be formed, and it is possible to prevent high density filling and crushing of the ion exchange resin or clogging of piping.
- a container 1 constitutes an ion exchange unit U used in a unit exchange type ion exchange apparatus, and has the same configuration as that in FIG. That is, in the ion exchange unit U, the regenerated ion exchange resin layer 2 is formed inside the detachable container 1.
- An opening 1 a is formed in the upper part of the container 1, and a lid 6 in which the resin introduction path 3, the raw water introduction path 4 and the treated water extraction path 5 are integrated is attached.
- a first strainer 4 a and a second strainer 5 a are provided at the lower ends of the raw water introduction path 4 and the treated water extraction path 5, respectively, at the leading ends that extend into the container 1.
- Couplings 4b and 5b are attached to the upper portions of the raw water introduction path 4 and the treated water extraction path 5, respectively, and can be connected to expansion joints 7 and 8 of the resin filling device.
- the expansion joints 7 and 8 are connected to the external flow paths 11 and 12 by joints 9 and 10.
- the ion exchange resin layer 2 is not filled in the entire container 1 and a water layer is formed on the upper part of the container 1, but in FIG. 3, the ion exchange resin layer 2 is formed in the entire container 1. It is designed to be filled to a full state.
- the ion exchange resin layer 2 is filled with a mixed resin of a cation exchange resin and an anion exchange resin.
- the rest of the configuration of the ion exchange unit U and the basic operation of filling the resin into the container 1 are substantially the same as those described with reference to FIG.
- the ion exchange unit U manufactured by forming the ion exchange resin layer 2 is sealed in the state of being separated at the positions of the couplings 4b and 5b and transported to the site in the same manner as described in FIG.
- the couplings 4b and 5b are connected to the raw water flow path and the treated water flow path (both not shown) of the ion exchange device corresponding to the external flow paths 11 and 12, and are used for ion exchange.
- the resin introduction path 3 is used for air venting.
- a cation exchange resin regeneration tank 21 In order to fill the container 1 with the mixed resin, a cation exchange resin regeneration tank 21, an anion exchange resin regeneration tank 22, and a mixing tank 23 are provided. After being performed, the regenerated resin is introduced and filled into the container 1 of the ion exchange unit U by the pump 30.
- the mixed resin constituting the ion exchange resin layer 2 is lined from the container 1 of the collected ion exchange unit U.
- L1 is introduced into the cation exchange resin regeneration tank 21, pure water is sent from the line L2, the resin is backwashed and separated, and the separated anion exchange resin is introduced into the anion exchange resin regeneration tank 22 from the line L5.
- the regenerant (acid) is passed from the line L3 to the cation exchange resin regeneration tank 21, the regeneration drainage is discharged from the line L4 to regenerate the cation exchange resin, and the regenerated cation exchange resin is mixed from the line L6. 23.
- pure water is sent from the line L7 to the anion exchange resin regeneration tank 22 to backwash the resin, and then a regenerant (alkaline) is passed from the line L8, and the regeneration drainage is discharged from the line L9 to remove the anion exchange resin.
- a regenerant alkaline
- the regenerated and regenerated anion exchange resin is transferred from the line L11 to the mixing tank 23.
- the mixing tank 23 air and pure water are supplied from the line L12, and pure water is supplied from the line L13 to mix the resin to form a mixed slurry with water.
- This mixed slurry is sucked by the pump 30 from the line L14, pressurized and introduced from the line L15 into the container 1 through the resin introduction path 3 of the ion exchange unit U, and the entrained water is fed by the first strainer 4a and the second strainer 5a. It separates, discharges
- the pump 30 is a pneumatically driven diaphragm pump.
- this pneumatically driven diaphragm pump for example, a double diaphragm pump disclosed in Patent Document 5 (Japanese Patent Laid-Open No. 2002-221160) is employed.
- This pump 30 is provided with diaphragms 33a and 33b in two pump chambers 32a and 32b formed adjacent to the housing 31, respectively, and is joined and integrated with the tip of a shaft 35 that slides through the intermediate wall 34. It is possible to reciprocate.
- the driving air chambers 36a and 36b are formed on the opposite sides of the pump chambers 32a and 32b to the diaphragms 33a and 33b, and the driving air passages 37a and 37b communicate with each other.
- Check valves 38a and 38b are provided below the pump chambers 32a and 32b, and communicate with the line L14 via the slurry suction passage 41, respectively.
- Check valves 39a and 39b are provided above the pump chambers 32a and 32b, respectively, and communicate with the line L15 via the slurry supply passage 42.
- the driving air passages 37 a and 37 b are connected to the switching valve 43 without intersecting with the slurry supply passage 42.
- An air supply path 44 and an air discharge path 45 communicate with the switching valve 43.
- the pump 30 is provided with a control device 50 for releasing the air pressure acting on the pump and stopping the pump driving when the air pressure for driving the pump reaches a predetermined pressure.
- a control device 50 for example, the one disclosed in Patent Document 6 (Japanese Patent Laid-Open No. 2007-305019) is employed.
- the control device 50 includes a control valve 51, a three-way valve 52, and a control valve 53.
- a first fluid chamber 56 and a second fluid chamber 57 are partitioned by a valve body 54 that is adjusted by a regulator 55.
- the first fluid chamber 56 is provided with a driving air inlet 58 and a driving air outlet 59.
- the compressed air is received from the air compressor 60 through the line L16 having the valve 61 into the driving air inlet 58 and from the driving air outlet 59 through the line L17. It communicates so that it may supply to the air supply path 44 of the switching valve 43.
- the first fluid chamber 56 is provided with a control air outlet 62 and communicates with the three-way valve 52 through the line L18 and further communicates with the control valve 53 through the line L19.
- the second fluid chamber 57 is provided with a control air inlet 63 and communicates with the control valve 53 through a line L21.
- the adjuster 55 is configured to adjust the flow rate of the driving air flowing through the first fluid chamber 56 by adjusting the position of the valve body 54.
- the regulator valve 53 is provided with a regulator 64 so that the operating pressure of the regulator valve 53 can be adjusted.
- the three-way valve 52 is provided with a switch 65 so that the control air can be discharged by switching the flow path of the three-way valve 52 and the control valve 51 can be reset.
- the flow rate of the compressed air from the air compressor 60 is adjusted by the valve 61, introduced into the driving air inlet 58 of the control valve 51 through the line L16, and the switching valve of the pump 30 from the driving air outlet 59 through the line L17. 43 is supplied to the air supply passage 44.
- the driving air passages 37a and 37b are alternately switched, and the driving air is alternately introduced into the driving air chambers 36a and 36b.
- the driving air is supplied from the other driving air passages 37b and 37a to the air discharge passage 45. Is operated to discharge.
- the diaphragms 33a and 33b move in the same direction via the shaft 35, suck the mixed slurry from the line L14, pressurize it, and introduce it into the container 1 through the resin introduction path 3 of the ion exchange unit U from the line L15.
- the pump 30 introduces driving air from the switching valve 43 to the driving air chamber 36b through the driving air passage 37b, and drives the driving air in the driving air chamber 36a from the driving air passage 37a to the outside through the air discharge passage 45.
- the state of discharging is shown.
- the driving air in the driving air chamber 36a is discharged and the diaphragm 33a moves toward the intermediate wall 34, whereby the mixed slurry in the mixing tank 23 enters the slurry suction passage 41 of the pump 30 from the line L14, and the check valve 38a.
- the pump chamber 32a Through the pump chamber 32a.
- the diaphragm 33b moves toward the pump chamber 32b, so that the mixed slurry in the pump chamber 32b is pressurized, enters the slurry supply path 42 from the check valve 39b, and introduces the resin of the ion exchange unit U from the line L15. It is introduced into the container 1 through the path 3. At this time, since the check valve 39a is closed, the mixed slurry in the slurry supply path 42 does not enter the pump chamber 32a.
- the switching valve 43 is switched to introduce driving air from the driving air passage 37a to the driving air chamber 36a, and to drive the driving air in the driving air chamber 36b from the switching valve 43 to the air discharge passage 45 through the driving air passage 37b.
- the diaphragms 33a and 33b move rightward in FIG. 1, and the mixed slurry that has entered the slurry suction passage 41 of the pump 30 from the mixing tank 23 is sucked into the pump chamber 32b through the check valve 38b.
- the mixed slurry in the pump chamber 32a is pressurized, enters the slurry supply path 42 from the check valve 39a, and is introduced into the container 1 of the ion exchange unit U from the line L15. In this manner, by alternately switching the driving air and the flow path of the mixed slurry by the switching valve 43, the mixed slurry can be continuously introduced into the container 1.
- the ion exchange resin in the mixed slurry introduced into the container 1 from the line L15 is filled in the container 1, and the entrained water is separated by the first strainer 4a and the second strainer 5a, and the expansion joints 7, 8 and joint 9 are separated. 10 are discharged from the external flow paths 11 and 12 to form the ion exchange resin filled layer 2.
- the entrained water is separated and discharged, so the mixed slurry is introduced one after another.
- the supply of the mixed slurry is repeated by switching the switching valve 43.
- the control valve 51 a part of the driving air in the first fluid chamber 56 is supplied as control air from the control air outlet 62 to the three-way valve 52 through the line L18, and further supplied to the control valve 53 through the line L19.
- the adjustment valve 53 is opened.
- control air enters the second fluid chamber 57 from the control valve 53 through the line L21 and the control air inlet 63, moves the valve body 54 to the right in FIG. close.
- the supply of driving air to the pump 30 is stopped, the driving air pressure acting on the pump 30 is released, and the pump 30 stops driving.
- the supply of the mixed slurry to the container 1 by the pump 30 is stopped. Since the container 1 is full at this stage, an ion exchange resin filled layer 2 having a certain capacity is formed in the container 1.
- the driving air pressure of the pump 30 reaches a predetermined pressure
- the driving air pressure acting on the pump 30 is released and the driving of the pump 30 is stopped, whereby the ion exchange resin layer 2 having a certain capacity is formed in the container 1.
- the filling density may be uneven. Therefore, after the pump 30 is stopped by a single filling operation, the pump 30 is left standing for a certain time, for example, 1 to 10 minutes, and then the pump 30 is driven. The mixture slurry is supplied, and when the driving air pressure reaches the predetermined pressure again, the air pressure acting on the pump 30 is released and the driving of the pump 30 is stopped to fill the ion exchange resin with a uniform filling density. Layer 2 can be formed.
- the flow path of the three-way valve 52 is switched by the switch 65 provided in the three-way valve 52, and the control air in the second fluid chamber 57 is discharged, thereby The valve body 54 is restored and the control valve 51 is reset.
- the filling strain of the ion exchange resin packed layer 2 in the container 1 is released, a uniform ion exchange resin packed layer 2 is formed, and the water layer is separated and the resin flows into the container 1.
- the driving of the pump 30 is resumed together with the resetting of the control valve 51, and the supply of the mixed slurry into the container 1 is resumed.
- the control valve 53 When the driving air pressure reaches the predetermined pressure again, the control valve 53 is opened, the air pressure acting on the pump 30 is released, and the driving of the pump 30 is stopped. Thereby, the ion exchange resin filling layer 2 having a more uniform filling density can be formed.
- the container 1 After forming the ion exchange resin filled layer 2 in this way, or when strictness is not required for the filling amount of the ion exchange resin filled layer 2, repeated filling operations are omitted, the container 1 is replaced, and the next An ion exchange resin filled layer 2 is formed for the container 1.
- the couplings 4b and 5b are separated from the expansion joints 7 and 8 and replaced with a new container 1.
- the switch 65 switches the flow path of the three-way valve 52 and resets the control valve 51, whereby driving air is supplied to the first fluid chamber 56 of the control valve 51, and the pump 30
- the supply of the mixed slurry to the new container 1 is resumed, and the ion exchange resin is filled in the same manner as described above, and the ion exchange resin filled layer 2 is formed.
- the operating pressure of the control valve 53 that is, the driving air pressure when the control valve 53 is opened can be set to a pressure in the range of 0.2 to 0.7 MPa. However, the pressure can be adjusted so as to be uniformly filled without crushing the resin. In this case, there is no need to measure or adjust the discharge pressure of the pump 30. By simply adjusting the operating pressure of the control valve 53, the control valve 51 is closed to release the air pressure acting on the pump 30, and the pump 30 Can be stopped.
- Example 2 to 6 In the apparatus shown in FIG. 3, a cation exchange resin CRM (trade name, manufactured by Kurita Kogyo Co., Ltd.) and an anion exchange resin KR (trade name, manufactured by Kurita Kogyo Co., Ltd.) are placed in a container 1 (volume 70 L) in volume ratio Mixing the mixed resin mixed at 1: 1.6 at a volume ratio of 80:20 with the mixed resin and water in a state where an aqueous phase is formed in the surroundings (a state where the water phase is settled and the water is not separated).
- a cation exchange resin CRM trade name, manufactured by Kurita Kogyo Co., Ltd.
- anion exchange resin KR trade name, manufactured by Kurita Kogyo Co., Ltd.
- the slurry was filled with the set pressure of the pump 30 at 0.294 MPa, and the ion exchange resin packed layer 2 was formed. After the pump 30 stopped at 0.294 MPa, it was allowed to stand for 10 minutes, and the pump 30 was again driven at a set pressure of 0.294 MPa for filling. Table 1 shows the results of sequentially replacing and filling five containers 1.
- a cation exchange resin, an anion exchange resin, a mixed resin thereof, or a mixture of these is used in a container used in an ion exchange device such as a pure water production device, an ultrapure water production device, a waste water treatment device, or an ion adsorption device. It can be used in a method for forming a ion exchange resin layer by filling a container with a mixed resin of a resin and another resin.
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Abstract
Description
イオン交換樹脂と水の混合スラリーを流体圧駆動式ポンプにより容器に供給し、
前記ポンプ駆動用の流体圧が所定圧に達した時点で、ポンプへ作用する流体圧を解除してポンプの駆動を停止することを特徴とする。
第1図に示すイオン交換装置製作設備を用い、第2図に示す構成の容器(72L)にアニオン交換樹脂とカチオン交換樹脂とを1:1で混合してイオン交換装置を製作した。このイオン交換装置に表1に示す金属イオン濃度の超純水をSV=60/hで24時間通水した。24時間目に採取したイオン交換装置流出水の水質を表1に示す。
第1図において、クリーンルーム141を設置しない構成のイオン交換装置製作設備を用いたこと以外は実施例1と同様にしてイオン交換装置を製作し、通水試験した。24時間目に採取したイオン交換装置流出水の水質を表1に示す。
〔実施例2~6〕
第3図に示す装置において、容器1(容積70L)に、カチオン交換樹脂CRM(栗田工業株式会社製、商標)と、アニオン交換樹脂KR(栗田工業株式会社製、商標)とを、容量比で1:1.6に混合した混合樹脂を、周囲に水相が形成された状態(静置沈降して水を分離しない状態)の混合樹脂と水の容量比で、80:20で混合した混合スラリーを、ポンプ30の設定圧を0.294MPaで充填し、イオン交換樹脂充填層2を形成した。ポンプ30が0.294MPaで停止後、10分間放置し、再度ポンプ30を設定圧0.294MPaで再駆動し、充填を行った。5個の容器1を順次交換して充填した結果を表1に示す。
実施例2~6と同じ容器および混合スラリーを用いて、第3図に記載の容器1の樹脂導入路3にロートを設置し、ビーカを用いて混合スラリーを、容器1が満杯になるまで流し込み、容器1にイオン交換樹脂層2を形成させた。3個の容器1を順次交換して充填した結果を表3に示す。
なお、本出願は、2009年6月30日付で出願された日本特許出願(特願2009-155660)及び2009年11月24日付で出願された日本特許出願(特願2009-266401)に基づいており、その全体が引用により援用される。
Claims (30)
- 精製処理されたイオン交換樹脂を容器に充填してイオン交換装置を製作する方法において、
イオン交換樹脂を該容器に充填する充填工程をクリーンルーム内で行うことを特徴とするイオン交換装置の製作方法。 - 請求項1において、イオン交換樹脂を大気と接触させることなく精製処理し、配管を経由して大気と接触させることなく充填工程へ移送することを特徴とするイオン交換装置の製作方法。
- 請求項1又は2において、精製処理を行うための精製設備が複数個並列に設けられており、1つの精製設備では同一種類のイオン交換樹脂のみを処理するようにし、種類の異なるイオン交換樹脂については異なる精製設備にて処理することを特徴とするイオン交換装置の製作方法。
- 請求項3において、複数種類のイオン交換樹脂をそれぞれ異なる精製設備にて精製した後、別々の計量槽で計量し、その後、混合槽にて混合し、前記容器に充填することを特徴とするイオン交換装置の製作方法。
- 請求項1ないし4のいずれか1項において、前記クリーンルームのクリーン度がクラス10,000以下であることを特徴とするイオン交換装置の製作方法。
- 請求項1ないし5のいずれか1項において、イオン交換樹脂を充填したイオン交換装置に対し、前記クリーンルーム内にて超純水を通水し、イオン交換装置からの流出水を分析してイオン交換装置を検査することを特徴とするイオン交換装置の製作方法。
- 請求項6において、前記流出水の分析をクラス1000以下のクリーン度の高クリーン度クリーンルーム内で行うことを特徴とするイオン交換装置の製作方法。
- 精製処理されたイオン交換樹脂を容器に充填してイオン交換装置を製作する設備において、
イオン交換樹脂を該容器に充填する充填工程を行うクリーンルームを備えたことを特徴とするイオン交換装置の製作設備。 - 請求項8において、イオン交換樹脂を大気と接触させることなく精製処理する精製手段と、該精製手段で精製されたイオン交換樹脂を、配管を経由して大気と接触させることなく充填工程へ移送する移送手段とを備えたことを特徴とするイオン交換装置の製作設備。
- 請求項8又は9において、精製処理を行うための精製設備が複数個並列に設けられており、1つの精製設備では同一種類のイオン交換樹脂のみを処理するようにし、種類の異なるイオン交換樹脂については異なる精製設備にて処理することを特徴とするイオン交換装置の製作設備。
- 請求項10において、複数種類のイオン交換樹脂をそれぞれ異なる精製設備にて精製した後、別々の計量槽で計量し、その後、混合槽にて混合し、前記容器に充填することを特徴とするイオン交換装置の製作設備。
- 請求項8ないし11のいずれか1項において、前記クリーンルームのクリーン度がクラス10,000以下であることを特徴とするイオン交換装置の製作設備。
- 請求項8ないし12のいずれか1項において、イオン交換樹脂を充填したイオン交換装置に対し、前記クリーンルーム内にて超純水を通水し、イオン交換装置からの流出水を分析してイオン交換装置を検査する検査手段を備えたことを特徴とするイオン交換装置の製作設備。
- 請求項13において、前記流出水の分析を行うクラス1000以下のクリーン度の高クリーン度クリーンルームを備えたことを特徴とするイオン交換装置の製作設備。
- 請求項1ないし7のいずれか1項の方法によって製造されたイオン交換装置。
- 請求項8ないし14のいずれか1項の設備によって製造されたイオン交換装置。
- イオン交換樹脂と水の混合スラリーを容器に導入して、水をストレーナで分離して容器から排出することにより、容器内にイオン交換樹脂を充填してイオン交換樹脂層を形成する方法であって、
イオン交換樹脂と水の混合スラリーを流体圧駆動式ポンプにより容器に供給し、
前記ポンプ駆動用の流体圧が所定圧に達した時点で、ポンプへ作用する流体圧を解除してポンプの駆動を停止することを特徴とするイオン交換樹脂層の形成方法。 - 請求項17において、ポンプ駆動用の流体圧が所定圧に達した時点でポンプへ作用する流体圧を解除してポンプの駆動を停止した後、ポンプの駆動を再開し、再度ポンプ駆動用の流体圧が所定圧に達した時点でポンプへ作用する流体圧を解除してポンプの駆動を停止することを特徴とするイオン交換樹脂層の形成方法。
- 請求項17又は18において、容器が第1のストレーナに接続する原水導入路、第2のストレーナに接続する処理水取出路、および樹脂導入路を備え、樹脂導入路を通してイオン交換樹脂と水の混合スラリーを容器に導入し、水を第1および/または第2のストレーナで分離して、原水導入路および/または処理水取出路から排出することにより、容器内にイオン交換樹脂層を形成することを特徴とするイオン交換樹脂層の形成方法。
- 請求項17ないし19のいずれか1項において、流体圧駆動式ポンプが空気圧駆動式ポンプであり、ポンプ駆動用の空気圧が所定圧に達した時点で、ポンプへ作用する空気圧を解除してポンプの駆動を停止する制御機構を備えることを特徴とするイオン交換樹脂層の形成方法。
- 請求項17ないし20のいずれか1項において、流体圧駆動式ポンプが空気圧駆動式ダイヤフラムポンプであることを特徴とするイオン交換樹脂層の形成方法。
- 請求項17ないし21のいずれか1項において、イオン交換樹脂がカチオン交換樹脂とアニオン交換樹脂の混合樹脂であることを特徴とするイオン交換樹脂層の形成方法。
- イオン交換樹脂と水の混合スラリーを容器に導入して、水をストレーナで分離して容器から排出することにより、容器内にイオン交換樹脂を充填してイオン交換樹脂層を形成する装置であって、
イオン交換樹脂と水の混合スラリーを容器に供給するための流体圧駆動式ポンプと、
前記ポンプ駆動用の流体圧が所定圧に達した時点で、ポンプへ作用する流体圧を解除してポンプの駆動を停止するポンプ制御手段とを備えたことを特徴とするイオン交換樹脂層の形成装置。 - 請求項23において、前記ポンプ制御手段は、ポンプ駆動用の流体圧が所定圧に達した時点でポンプへ作用する流体圧を解除してポンプの駆動を停止した後、ポンプの駆動を再開し、再度ポンプ駆動用の流体圧が所定圧に達した時点でポンプへ作用する流体圧を解除してポンプの駆動を停止することを特徴とするイオン交換樹脂層の形成装置。
- 請求項23又は24において、容器が第1のストレーナに接続する原水導入路、第2のストレーナに接続する処理水取出路、および樹脂導入路を備え、樹脂導入路を通してイオン交換樹脂と水の混合スラリーを容器に導入し、水を第1および/または第2のストレーナで分離して、原水導入路および/または処理水取出路から排出することにより、容器内にイオン交換樹脂層を形成することを特徴とするイオン交換樹脂層の形成装置。
- 請求項23ないし25のいずれか1項において、流体圧駆動式ポンプが空気圧駆動式ポンプであり、前記ポンプ制御手段は、ポンプ駆動用の空気圧が所定圧に達した時点で、ポンプへ作用する空気圧を解除してポンプの駆動を停止することを特徴とするイオン交換樹脂層の形成装置。
- 請求項23ないし26のいずれか1項において、流体圧駆動式ポンプが空気圧駆動式ダイヤフラムポンプであることを特徴とするイオン交換樹脂層の形成装置。
- 請求項23ないし27のいずれか1項において、イオン交換樹脂がカチオン交換樹脂とアニオン交換樹脂の混合樹脂であることを特徴とするイオン交換樹脂層の形成装置。
- 請求項17ないし22のいずれか1項の方法により形成されたイオン交換樹脂層を有するイオン交換装置。
- 請求項23ないし28のいずれか1項の装置により形成されたイオン交換樹脂層を有するイオン交換装置。
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