CN104743639A - High-efficiency sodium ion exchanger - Google Patents
High-efficiency sodium ion exchanger Download PDFInfo
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- CN104743639A CN104743639A CN201510177758.7A CN201510177758A CN104743639A CN 104743639 A CN104743639 A CN 104743639A CN 201510177758 A CN201510177758 A CN 201510177758A CN 104743639 A CN104743639 A CN 104743639A
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Abstract
The invention relates to a high-efficiency sodium ion exchanger used in water softening treatment. With the sodium ion exchanger, when a regeneration liquid is fed and water is replaced, finely particulate solids entering a resin layer in a last cycle and broken resin can be removed. The sodium ion exchanger has a cylindrical body, which is divided into an upper chamber and a lower chamber by a porous plate. An air discharge member is arranged at the top of the cylindrical body. A water inlet device and a strong acid resin layer are arranged in the upper chamber. A strong acid resin layer and a water discharge device positioned below the strong acid resin layer are arranged in the lower chamber. The water discharge device comprises a quartz sand pad layer and a dome-shaped porous plate positioned below the quartz sand pad layer. The height of the cleaning space of the upper chamber accounts for 70-100% of the height of the upper chamber strong acid resin layer. When the lower chamber strong acid resin layer is exhausted resin, a resin expansion space is left between the lower chamber strong acid resin and the porous plate with a double-headed water cap, wherein the volume of the resin expansion space accounts for 6.5-7.5% of the volume of the lower chamber strong acid resin when the lower chamber strong acid resin is regenerated resin.
Description
Technical field
The invention belongs to softening water treatment facility, specifically a kind of efficient Na-ion exchanger.
Background technology
Na-ion exchanger is to replace the softened water equipment of the calcium ions and magnesium ions (i.e. hardness) in former water with the active group sodium ion in ion exchange resin, it be applied to heating boiler in the boiler feed water of factory and enterprise, daily life with the water treatment etc. in water and some field of sewage, so the scope used is wide and many.Sodium floating ion interchanger (be called for short sodium floating bed) water treating softener equipment be last century the mid-1970s invented by Germany, its appearance solves that the effluent characteristics that the sodium co-current regeneration fixed bed invented the sixties by the U.S. and Japan and sodium countercurrent regenerating fixed bed exist is poor, to regenerate dosage high and need the multinomial defects such as air hold down regenerative operation, especially sodium floating bed improves operation flow velocity, brought up to 40m/h by 25m/h, thus sodium floating bed is used till today always and still by promotion and application widely both at home and abroad.Such as, but also there are some defects in actual motion, the cycle of can not disposing during each regeneration enters fine-particle solid in resin layer and broken thin resin, and need to run and resin was moved to the external big reverse washing that carries out in about 20 days; In addition, also need to arrange resin catcher and pipe that falls U more, for preventing the random layer of resin, can not start and stop and operation arbitrarily during water processed, flow velocity wants > 20m/h to start, and the floating operation of resin, adds resin loss amount.
Summary of the invention
Problem to be solved by this invention is for problem existing in prior art, and a kind of efficient Na-ion exchanger and water preparation process thereof are provided, it is when regenerating into regenerated liquid and replacing water at every turn, cycle of can simultaneously disposing enters fine-particle solid in resin layer and broken resin, and running resistance is little, run flow velocity high.
The technical scheme solved the problem is: the efficient Na-ion exchanger provided has a cylindrical shell, upper room and lower room is divided into by the porous plate of a band double end water cap in cylindrical shell, cylindrical shell top is provided with air-discharging parts, upper room is provided with water feed apparatus and strong resin (strong-acid cation-exchange resin) floor, water feed apparatus comprises the arm that the mother be communicated with water inlet pipe manages and is communicated with female pipe, lower room is provided with strong resin (strong-acid cation-exchange resin) floor and is positioned at the water-freeing arrangement below strong resin floor, water-freeing arrangement comprises quartz sand thickness and is positioned at the vaulted porous plate below quartz sand thickness, the cleaning space height of upper room is 70 ~ 100% of upper room strong resin layer height, and described cleaning space refers to the space between room strong resin floor upper surface and water feed apparatus arm, instantly when room strong resin is exhausted resin, between the porous plate of lower room strong resin and band double end water cap, resin expansion space is left, 6.5 ~ 7.5% of the volume that the volume of described resin expansion space is lower room strong resin when being regenerative resin.
Upper room be provided with sufficiently high cleaning space be in order to realize resin suspension regeneration and suspend cleaning good result; It is the object regenerated to realize compacting that certain resin expansion space is left in lower room.
The present invention is directed in existing softening water treatment facility and relate to effluent characteristics difference that strong resin brings because of the random layer of resin and the problem such as regeneration dosage is high, have employed the interchanger of upper and lower cell structure, and identical strong resin is all loaded in upper and lower room.According to ion exchange water treatment principle, upper room resin will become unique a kind of Ca type exhausted resin, reach thoroughly stop to produce more than two kinds exhausted resins and the random layer problem of the resin (Ca in general former water that occurs with this
++content is than Mg
++much higher).In addition, the distribution situation of the lower room resin in cylindrical shell is then completely different, resin after inefficacy there will be the three-layer resin of three kinds of different shapes from top to bottom, namely upper strata is a little Ca type exhausted resin, middle layer is whole Mg type exhausted resin, and lower floor is partial regeneration type Na type resin, so, can not random floor when regenerating for the lower room resin of layering, adopt compacting to regenerate and can avoid random layer.In order to reach the compacting regeneration of lower room resin, the present invention is remaining certain resin expansion space above exhausted resin top layer, lower room, allow regeneration time the resin volume that expands be just in time volume that resin shrinks because of inefficacy, namely after regeneration becomes regenerative strong resin, original volume can be returned to again, the characteristic that resin shrinkage expands so just can be utilized to reach the object that compacting has regenerated resin.For the new Na-ion exchanger dropped into, when the resin loaded is failure type resin, if lower room resin loads few, the random layer of resin during regeneration will be caused; If filling is too many, then can damage porous plate or crowded broken resin because resin expansion causes its volume excessive.Therefore, the loadings of lower room resin is most important, and it is related to quality and the device security of regeneration.Applicant learns through lot of experiments and long-term operation result, the volume shunk when strong resin lost efficacy is the volume expanded after lower room strong resin becomes regenerative strong resin, and the volume shunk when regenerative strong resin lost efficacy is 6.5 ~ 7.5% of regenerative strong resin cumulative volume.
Above-mentioned upper room strong resin and lower room strong resin are preferably the resin of same model; Further preferably: upper room strong resin is identical with the particle diameter of lower room strong resin, like this, if the resin of upper room enters into lower room because of operation or other reason, also normal operation can not be affected.
The preferred version of the applicant below lot of experiments has drawn: upper room strong resin is identical with the particle diameter of lower room strong resin, be 0.6 ~ 1.25mm, the height of upper room strong resin filling is 0.8 ~ 1.4m, the height of lower room strong resin filling is 0.9 ~ 2.2m, and the total fill able height of upper and lower two Room strong resins is 2.3 ~ 3.4m.
Existing softening water ion-exchanger, when entering regenerated liquid and replacing water, cut out the pressure lock at top, and the present invention must open pressure lock, and for this reason, the screen casing that air-discharging parts of the present invention comprise vapor pipe and connect with vapor pipe, vapor pipe is connected with pressure lock.Open pressure lock, air enters vapor pipe by screen casing, then is discharged by pressure lock, and screen casing can ensure that resin can not spill, thus reaches the good result of the regeneration that simultaneously suspends, suspension cleaning.In addition, in order to ensure operating performance, the exhaust port diameter that top is arranged is at least 120mm.
Because the resin of upper and lower two Room fillings of the present invention is all the strong resin of same model, same particle size, even if there be the bleed resin layer of lower room or the thin resin of a little lower room of the thin resin of a little upper room to bleed the resin layer of upper room, also be can not be influential to operation, therefore, the present invention does not arrange Archon layer, not only simplify structure, facilitate operation, resin and may mix mutually of Archon can be prevented again simultaneously and bring in operation unfavorable with affect effluent characteristics.
Water preparation process provided by the invention is as follows:
Step 1. is run: first drive pressure lock, former water enters in Na-ion exchanger by water feed apparatus, pressure lock is closed again after there are flowing out pressure lock, then current are from top to bottom by the arm water distribution of water feed apparatus, with required operation flow velocity successively by upper room strong resin floor, porous plate, lower room strong resin floor, flow out from outlet valve finally by bottom discharge device, when moving to effluent characteristics close to when being above standard, out of service, prepare regeneration;
Step 2. regenerates: the water intaking valve of closing water feed apparatus, close outlet valve, open pressure lock, open regenerated liquid and carry out liquid valve, mass concentration be 5 ~ 8% NaC1 regenerated liquid with the regeneration velocity of 4 ~ 5m/h through bottom discharge device from bottom to top successively by lower room strong resin floor, porous plate, upper room strong resin floor, water feed apparatus, discharged by regenerated liquid tapping valve, when after the regeneration liquid measure having entered regulation, stop into regenerated liquid;
Step 3. is replaced: the regenerated liquid valve of closing batch meter outlet, from bottom to top bottom pumping equipment, lower room strong resin floor, porous plate, upper room strong resin floor is passed through successively through regenerated liquid liquid feed valve with the softening water of 4 ~ 5m/h flow velocity, then discharged by water feed apparatus and regenerated liquid tapping valve, stop into softening water after cleaning water outlet reaches set quota;
Step 4. is just washed: former water enters in Na-ion exchanger by water feed apparatus, pressure lock is closed after there are flowing out pressure lock, then current pass through upper room strong resin floor, porous plate, lower room strong resin floor successively with the flow velocity of 35 ~ 40m/h, discharge finally by bottom pumping equipment and water discharge valve, after effluent quality reaches specified standards, close water discharge valve, equipment is done for subsequent use or is put into operation.
The present invention is compared with other Na-like ions interchanger, and also tool has the following advantages:
1, there is best operation reclaiming process, due to a kind of Ca type exhausted resin that upper room resin is unique, and the air gate open at cylindrical shell top air when having left the space of enough cleaning resins on the top of this resin and entered regenerated liquid and replacing water, there have been these three behaves just can realize the suspension regeneration of resin and the cleaning that suspends simultaneously, when just can realize regenerating, cylindrical shell leads directly to air, liquid stream is even, resistance is little, bias current and dead angle can not be there is, the upper cycle that importantly can wash when entering regenerated liquid and replacing water enters fine-particle solid in resin layer and broken tiny resin.Adding to keep lower room resin compacting to regenerate, utilizing the performance of resin dilation as previously mentioned, reaching the object that room resin is descended well in regeneration.
2, leave enough large cleaning space due to upper room of the present invention and be provided with heavy caliber exhaust port, can realize resin suspend simultaneously regeneration and suspend cleaning, thus can omit in operational scheme small reverse washing operation.And other class technique all needs to carry out once resin when regenerating or secondary small reverse washing or needs operation carry out once external big reverse washing in about 20 days.Thus schedule of operation of the present invention is minimum, only runs, regenerates, replaces, just washing FOUR EASY STEPS program.
3, the present invention adopts adverse current compacting regeneration techniques, first resin, when regenerating, by the reverse NaC1 regenerated liquid entered in bottom, can check on through lower room, can not random layer, thus can obtain best degree of percent regeneration of resin, good effluent characteristics and high water production in periodic mode.
4, the present invention and existing sodium floating bed operation flow velocity all can up to 40m/h, but sodium floating bed must arrange resin catcher and the pipe of falling U, need to run about 20 days resin and move to externally to carry out a big reverse washing, can not start and stop and run flow velocity and want > 20m/h ability starting outfit arbitrarily during water processed, and the present invention to be operation just carry out external big reverse washing after 1 ~ 3 year.
5, can start and stop arbitrarily, working cost is low, and compared with other kind equipment, can save personal water consumption about 8%, resin loss rate about can reduce by 5 times.
Accompanying drawing explanation
Structural representation when Fig. 1 is Na-ion exchanger of the present invention operation.
Structural representation when Fig. 2 is Na-ion exchanger efficiency lost resin state of the present invention.
Number in figure: 1-water feed apparatus, 1a-mother pipe, 1b-arm, the upper room of 2-, 3-double end water cap, 4-porous plate, room under 5-, 6-water-freeing arrangement, 61-quartz sand thickness, the vaulted porous plate of 62-, 63-water shoot, 7-regenerated liquid liquid feed valve, 8-water discharge valve, 9-outlet valve, strong resin floor in room under 10-, 11-upper room strong resin floor, 12-cleaning space, 13 air-discharging parts, 131-vapor pipe, 132-screen casing, 14-pressure lock, 15-resin expansion space.
Embodiment
Below in conjunction with example, content of the present invention is described in detail.
As shown in Figure 1, the cylindrical shell of Na-ion exchanger of the present invention is divided into room 2 and lower room 5, upper room 2 and lower room 5 are loaded as strong resin 11 floor and strong resin floor 10 all respectively, the porous plate 4 of one piece of band double end water cap 3 is housed between upper and lower two Room, in order to dredge the liquid stream of upper and lower two Room, and separate room strong resin floor 11 and lower room strong resin floor 10.Cylindrical shell top is provided with air-discharging parts 13, and it comprises vapor pipe 131 and screen casing 132.The water feed apparatus 1 of upper room is the cloth water dispenser that female pipe 1a and arm 1b are formed, and it simultaneously or regenerated liquid pumping equipment.Bottom discharge device 6 is the water-distributing device that quartz sand thickness 61 and vaulted porous plate 62 are formed, and it is also Regenerant apparatus simultaneously.Device-dependent primary member has water feed apparatus 1 entrance to intake and outlet valve 9, regenerated liquid liquid feed valve 7, pressure lock 14.
Space between the arm water outlet of water feed apparatus 1 and upper room strong resin floor 11 is cleaning space 12, and the height of cleaning space 12 is 100% of upper room strong resin floor 11 height.
In upper room 2 and lower room 5, all load the strong resin that model is 001X7, the particle diameter of strong resin is also identical, is 0.6 ~ 1.25mm, and the height of upper room strong resin floor 11 is 1.2m, and the height of lower room strong resin floor 10 is 2.0m.
The Na-ion exchanger that Fig. 2 gives this example is in the volumetric shrinkage situation of failure state room resin layer at present, namely, have institute's slot milling (i.e. expansion space 15) after a resin shrinkage between fault tree lipid layer 10 top layer to porous plate 4, lower room, its volume is 7% of lower room regenerative resin layer volume.
The water complete procedure processed of this example is as follows:
1, run: first drive pressure lock 14, former water enters in Na-ion exchanger by water inlet pipe by the female pipe 1a of the water inlet of water feed apparatus 1, pressure lock 14 is closed again after there are flowing out pressure lock 14, then current are from top to bottom by the water distribution of water feed apparatus 1, operation flow velocity (the highest operation flow velocity is 40m/h) again needed for adjustment, more successively by upper room strong resin floor 11, intermediate porous plate 4, lower room strong resin floor 10, flowed out by outlet valve 9 finally by bottom discharge device 6.When moving to effluent characteristics close to when being above standard, equipment is out of service, prepares regeneration.
2, regenerate: the water intaking valve of closing water feed apparatus 1, close outlet valve 9, drive pressure lock 14, open regenerated liquid liquid feed valve 7, enter the NaC1 regenerated liquid of 5 ~ 8% mass concentrations, from bottom to top discharged by bottom discharge device 6, lower room strong resin floor 10, intermediate porous plate 4, upper room strong resin floor 11, water feed apparatus 1 and regenerated liquid tapping valve successively with the regeneration velocity of 4 ~ 5m/h, when after the regeneration liquid measure having entered regulation, stop into regenerated liquid.
3, replace: the regenerated liquid valve (not shown in FIG.) of closing batch meter outlet, still keep entering softening water with 4 ~ 5m/h flow velocity, entered by regenerated liquid liquid feed valve 7, from bottom to top discharged by bottom discharge device 6, lower room strong resin floor 10, intermediate porous plate 4, upper room strong resin floor 11, water feed apparatus 1 and regenerated liquid tapping valve successively again, until cleaning after water outlet reaches set quota, stops into softening water.
4, just wash: former water enters in Na-ion exchanger by the female pipe of the water inlet of water feed apparatus 1, pressure lock 14 is closed again after having former water to flow out pressure lock 14, current are from top to bottom by the water distribution of water feed apparatus 1, then upper room strong resin floor 11, intermediate porous plate 4, lower room strong resin floor 10 is passed through successively with the flow velocity of 40m/h, just wash finally by bottom discharge device 6 and bottom water discharge valve 8, after effluent quality reaches specified standards, close bottom water discharge valve 8, equipment is done for subsequent use or is put into operation.
Claims (6)
1. an efficient Na-ion exchanger, it is characterized in that there is a cylindrical shell, upper room and lower room is divided into by the porous plate of a band double end water cap in cylindrical shell, cylindrical shell top is provided with air-discharging parts, upper room is provided with water feed apparatus and strong resin floor, water feed apparatus comprises the arm that the mother be communicated with water inlet pipe manages and is communicated with female pipe, and lower room is provided with strong resin floor and is positioned at the water-freeing arrangement below strong resin floor, and water-freeing arrangement comprises quartz sand thickness and is positioned at the vaulted porous plate below quartz sand thickness; The cleaning space height of upper room is 70 ~ 100% of upper room strong resin layer height, and described cleaning space refers to the space between room strong resin floor upper surface and water feed apparatus arm; Instantly when room strong resin is exhausted resin, between the porous plate of lower room strong resin and band double end water cap, resin expansion space is left, 6.5 ~ 7.5% of the volume that the volume of described resin expansion space is lower room strong resin when being regenerative resin.
2. Na-ion exchanger according to claim 1, is characterized in that room strong resin and lower room strong resin are the resin of same model.
3. Na-ion exchanger according to claim 1 and 2, is characterized in that room strong resin is identical with the particle diameter of lower room strong resin.
4. Na-ion exchanger according to claim 1, it is characterized in that room strong resin is identical with the particle diameter of lower room strong resin, be 0.6 ~ 1.25mm, the height of upper room strong resin filling is 0.8 ~ 1.4m, the height of lower room strong resin filling is 0.9 ~ 2.2m, and the total fill able height of upper and lower two Room strong resins is 2.3 ~ 3.4m.
5. Na-ion exchanger according to claim 1, it is characterized in that the screen casing that air-discharging parts comprise vapor pipe and connect with vapor pipe, vapor pipe is connected with pressure lock, and exhaust port diameter is at least 120mm.
6. the water preparation process of Na-ion exchanger described in claim 1, its step is as follows:
Step 1. is run: first drive pressure lock, former water enters in Na-ion exchanger by water feed apparatus, pressure lock is closed again after there are flowing out pressure lock, then current are from top to bottom by the arm water distribution of water feed apparatus, with required operation flow velocity successively by upper room strong resin floor, porous plate, lower room strong resin floor, flow out from outlet valve finally by bottom discharge device, when moving to effluent characteristics close to when being above standard, out of service, prepare regeneration;
Step 2. regenerates: the water intaking valve of closing water feed apparatus, close outlet valve, open pressure lock, open regenerated liquid and carry out liquid valve, mass concentration be 5 ~ 8% NaC1 regenerated liquid with the regeneration velocity of 4 ~ 5m/h through bottom discharge device from bottom to top successively by lower room strong resin floor, porous plate, upper room strong resin floor, water feed apparatus, discharged by regenerated liquid tapping valve, when after the regeneration liquid measure having entered regulation, stop into regenerated liquid;
Step 3. is replaced: the regenerated liquid valve of closing batch meter outlet, from bottom to top bottom pumping equipment, lower room strong resin floor, porous plate, upper room strong resin floor is passed through successively through regenerated liquid liquid feed valve with the softening water of 4 ~ 5m/h flow velocity, then discharged by water feed apparatus and regenerated liquid tapping valve, stop into softening water after cleaning water outlet reaches set quota;
Step 4. is just washed: former water enters in Na-ion exchanger by water feed apparatus, pressure lock is closed after there are flowing out pressure lock, then current pass through upper room strong resin floor, porous plate, lower room strong resin floor successively with the flow velocity of 35 ~ 40m/h, discharge finally by bottom pumping equipment and water discharge valve, after effluent quality reaches specified standards, close water discharge valve, equipment is done for subsequent use or is put into operation.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249519A (en) * | 2018-04-17 | 2018-07-06 | 袁龙 | Softening is except basic ion exchanger |
| CN108855248A (en) * | 2018-06-26 | 2018-11-23 | 辽宁莱特莱德环境工程有限公司 | Ion-exchange reactions and regenerating unit |
| CN110451603A (en) * | 2019-08-09 | 2019-11-15 | 成都之和环保科技有限公司 | Full-automatic Na-ion exchanger |
| CN111001444A (en) * | 2018-10-08 | 2020-04-14 | 金川集团股份有限公司 | Ion exchange resin tower |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108249519A (en) * | 2018-04-17 | 2018-07-06 | 袁龙 | Softening is except basic ion exchanger |
| CN108855248A (en) * | 2018-06-26 | 2018-11-23 | 辽宁莱特莱德环境工程有限公司 | Ion-exchange reactions and regenerating unit |
| CN111001444A (en) * | 2018-10-08 | 2020-04-14 | 金川集团股份有限公司 | Ion exchange resin tower |
| WO2020073409A1 (en) * | 2018-10-08 | 2020-04-16 | 金川集团股份有限公司 | Ion exchange resin tower |
| CN111001444B (en) * | 2018-10-08 | 2022-05-17 | 金川集团股份有限公司 | Ion exchange resin tower |
| CN110451603A (en) * | 2019-08-09 | 2019-11-15 | 成都之和环保科技有限公司 | Full-automatic Na-ion exchanger |
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