WO2022175988A2 - Resin regenerating salt bag in ion exchanging processes - Google Patents
Resin regenerating salt bag in ion exchanging processes Download PDFInfo
- Publication number
- WO2022175988A2 WO2022175988A2 PCT/IR2022/050009 IR2022050009W WO2022175988A2 WO 2022175988 A2 WO2022175988 A2 WO 2022175988A2 IR 2022050009 W IR2022050009 W IR 2022050009W WO 2022175988 A2 WO2022175988 A2 WO 2022175988A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- salt
- solution
- concentration
- water
- bag
- Prior art date
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 46
- 239000011347 resin Substances 0.000 title claims abstract description 24
- 229920005989 resin Polymers 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000001172 regenerating effect Effects 0.000 title claims abstract description 17
- 238000005342 ion exchange Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 12
- 239000011780 sodium chloride Substances 0.000 claims abstract description 12
- 239000006260 foam Substances 0.000 claims abstract description 9
- 239000008187 granular material Substances 0.000 claims abstract description 7
- 239000012528 membrane Substances 0.000 claims abstract description 6
- 238000009792 diffusion process Methods 0.000 claims abstract description 3
- 230000008929 regeneration Effects 0.000 claims description 11
- 238000011069 regeneration method Methods 0.000 claims description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 3
- 239000011707 mineral Substances 0.000 claims description 3
- 239000004753 textile Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 239000004619 high density foam Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 6
- 238000000502 dialysis Methods 0.000 abstract description 5
- 238000004061 bleaching Methods 0.000 abstract description 2
- 239000002245 particle Substances 0.000 abstract description 2
- 230000002269 spontaneous effect Effects 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 12
- 230000003247 decreasing effect Effects 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 208000018522 Gastrointestinal disease Diseases 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000002496 gastric effect Effects 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 208000017169 kidney disease Diseases 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
- C02F1/685—Devices for dosing the additives
- C02F1/688—Devices in which the water progressively dissolves a solid compound
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/15—Dissolving comprising constructions for blocking or redispersing undissolved solids, e.g. sieves, separators or guiding constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/50—Elements used for separating or keeping undissolved material in the mixer
- B01F21/503—Filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/50—Movable or transportable mixing devices or plants
- B01F33/503—Floating mixing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/50—Mixing receptacles
- B01F35/513—Flexible receptacles, e.g. bags supported by rigid containers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Definitions
- This invention is related with resin regeneration and processes due to ion exchange. Also it can solve issues such as maintaining the concentration of salts which are soluble in water, reduction of impurities of the solution, precipitation, uniformity in solubility, etc.
- Salt tablets do not have the initial density of its natural mineral; So using of it cannot solve the problem with the uniformity of salt on the top or at the bottom of the container and because of this we need to use a pump for water circulation in container.
- the circulation in water because of the pump can increase the solubility of salt tablets and finally it can cause sudden salinity. Also using of pump for saline water would have high depreciation.
- our regenerating salt bag we have used a semi-permeable membrane, a layer of foam at the bottom of the bag and some granulated salt proportional to the concentration and the density of salt which is needed.
- Regenerating bags 1) They work as filters and can filter the possible impurities.
- the amount of foam is determined in such a way that when the bag is full, it is going to be placed at the bottom of the container and by decreasing the density because of dissolving salt, the bag would move upward and be placed at the top of the water gradually. This movement can keep the uniformity of solution on the top and at the bottom of it and also by generating a natural circulation it prevents the increasing of concentration at the bottom of the container.
- the suggested way can be used in regenerating of resin or ion exchanging and due to increasing the purity and lowering the precipitation can increase the life span of resin, lowering the utilization of salt and improving the operation of resins in the processes of water softening.
- the procedures of resin regeneration in the systems of softening, bleaching, etc are very useful and vital. One of the most important ones is about procedures which are needed for water softening of dialysis machines which existence of impurities in water and also concentration non-uniformity can cause disruption in dialysis procedure.
Abstract
The resin regenerating salt bags can be used in softening systems, bleaching, filtering of water which is for dialysis machines, etc. Up to now using of powdered salts, saltlicks and salt tablets were the common ways for the processes of regenerating resin but each of them has their own problems like sudden solubility in the solution and not reaching to the proper concentration of the solution, increasing the impurities of the solution, non-uniformity of the solution concentration at the top and at the bottom of the solution in the container, etc. For solving the issues of the resin regenerating procedures and ion exchange the idea of salt bag was raised. Salt bags are composed of a layer of semi-permeable membrane, a layer of foam and a particular amount of granular salt. Regenerating bags not only filters the possible impurities of salt (because of using granules with high density and existence of a semi-permeable membrane) but also they can cause diffusion (The spontaneous movement of particles from a region with high concentration to another region with lower concentration) and as a result the concentration of solution would be stable in a particular level. The existence of foam in the bags causes a natural circulation in the saline water and by this the bags bring the uniformity of the concentration in different parts of the solution.
Description
Resin Regenerating Salt Bag in Ion Exchanging Processes
Technical Context of the Invention:
This invention is related with resin regeneration and processes due to ion exchange. Also it can solve issues such as maintaining the concentration of salts which are soluble in water, reduction of impurities of the solution, precipitation, uniformity in solubility, etc.
Technical problems and description of the aims of invention
In processes such as resin regeneration and ion exchange especially for some vital equipment and elements (facilities used in dialysis equipment and machines, etc), maintaining the purity of saline water, preventing of entry of other salts into water, uniformity of the concentration of the saline water in the lower and upper parts of the saline water container in distinct time periods, uniform dissolving of the regenerating salt, etc has special importance. In the past years powdered salts, saltlick and salt tablets have been used for processes which are involved in regenerating resin and none of them could solve the issues entirely. Thus for solving these problems in regenerating and ion exchange the idea of salt bag was raised.
Description of prior knowledge and experiences which are related to the described invention
Water which contains high amount of solutes in it (from now on Hard Water) can cause several problems such as forming precipitation at the bottom of boilers in factories, heat exchangers, cooling systems; Wasting of soaps in some industries like textile industry and decreasing in quality, causing gastrointestinal and renal diseases, etc. Until now several ways have been suggested and performed for eliminating or decreasing water hardness. Even most of them have been registered as patents in related organizations like water softening of hard waters by refrigeration devices, electronic water softeners, etc. One of the common ways for water softening nowadays is using of Resin Water Softeners. The method of operation of such devices is based on ion exchanging. The history of recruitment of ion exchanging system dates back to 1935. Adams and Holmes realized that artificial vinyl compounds also can be sulfated. This great discovery made the ion exchangers to be manufactured by organic compounds such as resin, Sulfonic acid and polyester based compounds which in addition to high capacity also they have perfect versatility and stability. Dallive in 1944 as the first person offered a patent for sulfonated polyester.
The way these resins work is that Sodium ion in resin would be exchanged by Calcium and Magnesium ions which are present in water. Over time, the number of sodium ions in resin decrease and resin needs to be regenerated. Regeneration can be done by several ways like using high concentrated water and salt solution, acids (Acid regeneration of ion exchange resins for industrial applications), etc. Using water and salt solution is one of the common ways. So far there have been 3 common ways to dissolve salt in water for regenerating resin (powdered salts, saltlick and salt tablets) in different manners (Water-softening apparatus and regeneration control method) and each of them has their own benefits and drawbacks. The method which is going to be described here in addition to solve the disadvantages of previous methods like the uniformity of saline water, has also other several benefits.
Providing Solutions for existing Technical problems with comprehensive description
In methods of regenerating resin or ion exchanging in sensitive equipment such as dialysis machines, preventing excess solutes from entering water, uniformity of saline water on the top and at the bottom of the saline water in containers in different times, uniform dissolution of regenerating salt, etc have great importance. In previous years, powdered salts, saltlick and salt tablets have been used for resin regeneration. None of them could solve the issues completely in these processes. For instance, using powdered salt because of its high solubility would cause sudden salinity. Also using of saltlicks by their normal and high density would cause precipitation and increasing water hardness, so it has its own drawbacks. In past years, one of the methods for solving problems for saltlick and refined salt was condensation of refined salt and using of salt tablets. Salt tablets do not have the initial density of its natural mineral; So using of it cannot solve the problem with the uniformity of salt on the top or at the bottom of the container and because of this we need to use a pump for water circulation in container. The circulation in water because of the pump can increase the solubility of salt tablets and finally it can cause sudden salinity. Also using of pump for saline water would have high depreciation. Due to problems which described above, for solving the issues in the process of regeneration and ion exchange the idea of salt bag was raised. In our regenerating salt bag we have used a semi-permeable membrane, a layer of foam at the bottom of the bag and some granulated salt proportional to the concentration and the density of salt which is needed. Regenerating bags: 1) They work as filters and can filter the possible impurities.
2) Because of using granules with natural density as minerals, dissolving of salt in water would happen gradually and the concentration of solution keeps its uniformity. 3) By the help of semi-permeable membrane, Diffusion (The spontaneous movement of particles from a region with high concentration to another region with lower concentration) can occur and the concentration of solution would be kept at a certain level which by decreasing of the concentration of the solution, high concentrated saline water can be secreted from the bag to the solution. By dissolving of the salt in the bag, the density of the regenerating bag decreases. Also by the help of Elastic rubber bands which can compress the bag because of the reduction of the volume of the salt granules, the bag would start slowly coming to the top of the solution because of the foam exists at the bottom of the bag. In fact, the amount of foam is determined in such a way that when the bag is full, it is going to be placed at the bottom of the container and by
decreasing the density because of dissolving salt, the bag would move upward and be placed at the top of the water gradually. This movement can keep the uniformity of solution on the top and at the bottom of it and also by generating a natural circulation it prevents the increasing of concentration at the bottom of the container.
Clear and precise description of the advantages of the claimed invention over previous inventions
Regeneration bags: 1) Work as a filter and filter the possible impurities of the salt. 2) Because of using granules with high density and existence of a semi-permeable membrane, the process of dissolving salt in water occurs gradually, so the concentration of solution would keep its uniformity. 3) The existence of foam at the bottom of the bag causes the slow upward movement of the bag to the top and the surface of the solution which is proportional to the amount of saltlicks that have been dissolved so there will be a natural circulation in the solution and a uniformity of concentration in different parts of the solution.
4) When the bag is compressed by the help of rubber bands, almost the whole components of the bag have been dissolved in water and user easily notices it is the time for removing or replacing the bag.
Description of at least one functional way for using the invention
Using of Salt Granules and a piece of foam (proportional to the mass of the bag) in semi-permeable bags
Clear mention of the industrial application of the invention
The suggested way can be used in regenerating of resin or ion exchanging and due to increasing the purity and lowering the precipitation can increase the life span of resin, lowering the utilization of salt and improving the operation of resins in the processes of water softening. The procedures of resin regeneration in the systems of softening, bleaching, etc are very useful and vital. One of the most important ones is about procedures which are needed for water softening of dialysis machines which existence of impurities in water and also concentration non-uniformity can cause disruption in dialysis procedure.
Claims
Claims
1) What is claimed, it's a product for regenerating of resin and processes of ion exchanging in the fields which are needed to maintain the purity and the concentration of the saline water (a solution in which water is the solvent and salts are solutes) and composed of:
A Bag
Salt with high density Foam
Elastic Rubber Band
2) According to (1) the bag is made of one or several layers of fabrics (textiles) working as filters or it is made of one or several layers of semi-permeable membranes such as Melt-Blown and etc.
3) According to (2) the bag tissue density would be determined according to the degree of purity, the concentration of saline water and the amount of minerals which are present in the environment of resin regeneration.
4) According to (2) the outer layer of the bag determines the rate and the amount of diffusion in the environment of resin regeneration.
5) According to (1) salt with high density can be present in the form of salt granules, saltlicks, salt tablets and etc.
6) According to (1) the foam is made up of materials with lower density than the water.
7) According to (6) the foam which is using for natural circulation of the claimed product in saline water can be made of ionolite, porous materials and etc.
8) According to (1) Elastic Rubber Bands are for gradual compressing of the bags during reduction of the volume of the salt granules because of gradual dissolving.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IR13993010424 | 2021-02-21 | ||
| IR139950140003010424 | 2021-02-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2022175988A2 true WO2022175988A2 (en) | 2022-08-25 |
| WO2022175988A3 WO2022175988A3 (en) | 2022-09-22 |
Family
ID=83189138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IR2022/050009 WO2022175988A2 (en) | 2021-02-21 | 2022-02-19 | Resin regenerating salt bag in ion exchanging processes |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2022175988A2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3304152A1 (en) * | 1982-02-10 | 1983-08-18 | Dieter Dipl.-Chem. 4000 Düsseldorf Brodalla | Process and apparatus for treating domestic water |
| GB8606073D0 (en) * | 1986-03-12 | 1986-04-16 | Wilkinson & Simpson Ltd | Water treatment & soil testing |
| US9919934B2 (en) * | 2016-01-07 | 2018-03-20 | Etec Inc. | Water softening ball |
-
2022
- 2022-02-19 WO PCT/IR2022/050009 patent/WO2022175988A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022175988A3 (en) | 2022-09-22 |
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