CN100425541C - Tech for regenerating cation exchanger for water treatment ion-exchange salt removing system - Google Patents
Tech for regenerating cation exchanger for water treatment ion-exchange salt removing system Download PDFInfo
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- CN100425541C CN100425541C CNB2005100422555A CN200510042255A CN100425541C CN 100425541 C CN100425541 C CN 100425541C CN B2005100422555 A CNB2005100422555 A CN B2005100422555A CN 200510042255 A CN200510042255 A CN 200510042255A CN 100425541 C CN100425541 C CN 100425541C
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Abstract
The present invention relates to a technology for regenerating cation beds for a water-treatment ion-exchange salt removing system. A weak-acid cation bed and a strong-acid cation bed are connected in series for regeneration, the acid pickle of the regenerating strong-acid cation bed is used for regerating the weak-acid cation bed, and full-water serial regeneration is a key point. In the full-water serial regeneration, the strong-acid cation bed and the weak-acid cation bed are full of water, air in the beds are exhausted, exhaust valves are turned off, a water pump is started up for regeneration, regenerating liquid flows to the weak-acid cation bed from the strong-acid cation bed in a low speed, and then the present invention realizes the serial regeneration and reduces acid consumption. After the strong-acid cation bed is full of the water, a compact layer (the thickness is from 200mm to 250mm) is immersed in water, and then the downward-pressing action of the compact layer is greatly reduced due to the action of buoyancy. The concrete operation steps comprise full-water operation, regenerating liquid feeding, displacement, forward washing to the weak-acid cation, little forward washing to the strong-acid cation, forward washing to the strong-acid cation, little back washing and large back washing. The present invention has the advantages of cost saving, enhancement of economic benefit, reduction of water consumption, shortening of regeneration time, reduction of waste acid exhausting amount, convenient and easy operation and convenient realization of automatization.
Description
Technical field:
The present invention relates to water technology, relate in particular to cation exchanger for water treatment ion-exchange salt removing system (i.e. sun bed) renovation process.
Background technology:
The vapor pressure temperature height of large-sized boiler, higher to requirements in water quality, ion-exchange demineralization is a Perfected process of producing pure water.Usually adopt the secondary desalting system, that is: weak acid sun bed (co-current regeneration fixed bed) → strong acid sun bed (the anion bed fixed bed) → carbon dioxide cleaner → cloudy bed of highly basic → mixed bed obtains qualified pure demineralized water.Wherein, the used regenerative agent of ion-exchanger regeneration is main consumption, if can reduce the consumption of regenerative agent, then can greatly reduce the cost of water processed.
Summary of the invention:
The objective of the invention is to, overcome the deficiencies in the prior art part, a kind of regeneration method of cation exchange reactor of water treatment ion-exchange demineralization system is provided, make weak acid sun bed (co-current regeneration fixed bed) and strong acid sun bed (anion bed fixed bed) series connection regeneration, utilize the acid pickle of the regeneration strong acid sun bed weak acid sun bed of regenerating, reduce with acid amount, Reduction of acid consumption.
Regeneration method of cation exchange reactor of water treatment ion-exchange demineralization system of the present invention is with weak acid cation bed and strong acid cation bed series connection regeneration, utilizes the acid pickle of the regeneration strong acid cation bed weak acid cation bed of regenerating, and can reduce with acid amount, Reduction of acid consumption.Present used weak acid cation bed and strong acid cation bed be separately regeneration respectively, and the regeneration specific consumption is 1.2-1.5.If adopt general direct series connection regeneration, the regeneration condition of regeneration strong acid cation bed during just by independent regeneration allows regenerated liquid discharge from the strong acid cation bed, flows directly to weak acid cation bed acid inlet tube.When regenerating like this, the pressure reduction that advances between sour owing to row's door and weak acid cation bed in the strong acid cation bed is little, causes the regenerated liquid throttling, and regenerated liquid is risen to more than the intermediate drain installation of strong acid cation bed, makes the random layer of resin, does not reach desirable regeneration effect, and acid consumes bigger.But address this problem is to realize series connection regenerated key, and full water series connection regeneration can address this problem.So-called full water series connection regeneration allows strong acid cation bed and weak acid cation bed be full of water exactly, behind the air, closes exhaust valve in the emptying bed, starts water pump regeneration, allows regenerated liquid flow to the weak acid cation bed with low flow velocity from the strong acid cation bed, realizes series connection regeneration, Reduction of acid consumption.
Behind the strong acid sun bed full water, packed resin layer is under water, and packed resin layer thickness is 200mm～250mm, is subjected to buoyancy and effect that packed resin layer is pressed down reduces greatly.Because the strong acid positive resin wet true density is compacted greater than packed resin layer in 1.0 (about 1.25) and the operational process, so packed resin layer can also play a role.If with the regenerated liquid regeneration of low flow velocity, can guarantee the not random layer of resin.Experiment showed, that with the regeneration of about 3 m/hs flow velocity resin can be not disorderly layer.If the Pressure Drop during operation allows, can suitably increase the thickness of packed resin layer, both can guarantee the not random layer of resin, can suitably improve again the flow velocity of regenerated liquid.Concrete operation steps is as follows:
One, full water operation:
Cut-in stand-by bed or stop raw water pump after sun bed lost efficacy, after closing the sampling gate of strong acid sun bed and weak acid sun bed, close weak acid sun bed intake gate, after the pressure release, close successively weak acid sun bed and go out water valve and a strong acid sun import and export door, positive of weak acid sun bed and strong acid all are in full water state like this; Perhaps start regenerative pump, with the water inlet of the flow velocity below 1.5 m/hs, close exhaust valve behind the full water, realize full water.
Two, advance regenerated liquid:
Open successively that weak acid sun bed is just being arranged door, advanced the acid door, row's door and advance the acid door in the strong acid sun bed, start regenerative pump, intake gate is sprayed in turn on pump outlet portal, acid, transfer to 3-4 m/h with flow velocity is ascending, open sour batch meter outlet portal, adjust the concentration of acid, be advisable at 3-4%.
Three, displacement:
After treating into the regenerator of intact institute expense, close the outlet portal of sour batch meter, wash to the acidity≤5mmol/l of weak acid sun bed water outlet, replacement completion with the de-mineralized water of former flow velocity.Close the regenerative pump outlet portal, stop regenerative pump, close successively Acid injector intake gate, strong acid sun bed and advance acid door, middle row door and weak acid sun bed and advance acid.
Four, weak acid sun bed is just washed:
With raw water pump, filter puts into operation, opens weak acid sun bed intake gate, and normal flow is just being washed 15-20min during with operation does not have hardness to water outlet;
Five, strong acid sun bed is little just washes:
Open successively strong acid sun bed intake gate, middle row's door and weak acid sun bed and go out water valve, close weak acid sun bed and just arranging door, just wash with 10 m/hs of flow velocitys, just washing a little and got final product in 2-3 minute.According to actual conditions, if do not carry out littlely just washing, affect also little.
Six, strong acid sun bed is just washed:
Open strong acid sun bed and just washing drainage door, row's door in closing, normal flow just is being washed till Na during with operation
+＜100ug/l, just washing qualified after, stop the operation of raw water pump and filter, close weak acid sun bed intake gate and go out water valve, open air gate, close strong acid sun bed intake gate and just washing drainage door, open air gate.This placing into reserve state.
Seven, small reverse washing:
Small reverse washing carries out after the 4th step, weak acid sun bed was just washed end, and small reverse washing is decided as the case may be, carries out once getting final product after several cycles of operation.
Eight, big reverse washing:
Big reverse washing carries out once 15-20 of operation or after the more cycle, and the concrete grammar of big reverse washing is with regeneration is identical separately.
Use regeneration method of cation exchange reactor of water treatment ion-exchange demineralization system of the present invention, major advantage is as follows: 1, reduced sour consumption, saved cost, can obviously increase economic efficiency; 2, reduce 2-3 percentage point of auxiliary water ratio; 3, can shorten the recovery time greatly; 4, reduce the quantity discharged of spent acid, protected environment; 5, easy to operation, be convenient to realize automatization; 6, regeneration changes the repacking of series connection regenerated simply separately, and cost is low.
Description of drawings:
Accompanying drawing is a regeneration method of cation exchange reactor of water treatment ion-exchange demineralization system series connection regenerated schematic diagram of the present invention.
Embodiment:
Referring now to accompanying drawing, be described as follows in conjunction with the embodiments: regeneration method of cation exchange reactor of water treatment ion-exchange demineralization system of the present invention, with weak acid sun bed and strong acid sun bed series connection regeneration, utilize the acid pickle of the regeneration strong acid sun bed weak acid sun bed of regenerating, can reduce with acid amount, Reduction of acid consumption.Present used weak acid cation bed and strong acid cation bed be separately regeneration respectively, and the regeneration specific consumption is 1.2-1.5.If adopt general direct series connection regeneration, the regeneration condition of regeneration strong acid cation bed during just by independent regeneration allows regenerated liquid discharge from the strong acid cation bed, flows directly to weak acid cation bed acid inlet tube.When regenerating like this, the pressure reduction that advances between sour owing to row's door and weak acid cation bed in the strong acid cation bed is little, causes the regenerated liquid throttling, and regenerated liquid is risen to more than the intermediate drain installation of strong acid cation bed, makes the random layer of resin, does not reach desirable regeneration effect, and acid consumes bigger.But address this problem is to realize series connection regenerated key, and full water series connection regeneration can address this problem.So-called full water series connection regeneration allows strong acid cation bed and weak acid cation bed be full of water exactly, behind the air, closes exhaust valve in the emptying bed, starts water pump regeneration, allows regenerated liquid flow to the weak acid cation bed with low flow velocity from the strong acid cation bed, realizes series connection regeneration, Reduction of acid consumption.Behind the strong acid sun bed full water, packed resin layer is under water, and packed resin layer thickness is 200mm～250mm, is subjected to buoyancy and effect that packed resin layer is pressed down reduces greatly.Because the strong acid positive resin wet true density is compacted greater than packed resin layer in 1.0 (about 1.25) and the operational process, so packed resin layer can also play a role.If with the regenerated liquid regeneration of low flow velocity, can guarantee the not random layer of resin.Experiment showed, that with the regeneration of about 3 m/hs flow velocity resin can be not disorderly layer.If the Pressure Drop during operation allows, can suitably increase the thickness of packed resin layer, both can guarantee the not random layer of resin, can suitably improve again the flow velocity of regenerated liquid.Concrete operation steps is as follows:
One, full water operation: cut-in stand-by bed or stop raw water pump after the sun bed lost efficacy, after closing the sampling gate of strong acid sun bed and weak acid sun bed, close weak acid sun bed intake gate, after the pressure release, close successively weak acid sun bed and go out water valve and a strong acid sun import and export door, positive of weak acid sun bed and strong acid all are in full water state like this.Perhaps start regenerative pump, with the water inlet of the flow velocity below 1.5 m/hs, close exhaust valve behind the full water, realize full water.
Two, advance regenerated liquid: open successively that weak acid sun bed is just being arranged door, advanced the acid door, row's door and advance the acid door in the strong acid sun bed, start regenerative pump, intake gate is sprayed in turn on pump outlet portal, acid, transfer to 3-4 m/h with flow velocity is ascending, open sour batch meter outlet portal, adjust the concentration of acid, be advisable at 3%-4%.
Three, displacement: after treating into the regenerator of intact institute expense, close the outlet portal of sour batch meter, wash to the acidity≤5mmol/l of weak acid sun bed water outlet, replacement completion with the de-mineralized water of former flow velocity.Close the regenerative pump outlet portal, stop regenerative pump, close successively Acid injector intake gate, strong acid sun bed and advance acid door, middle row door and weak acid sun bed and advance acid.
Four, weak acid sun bed is just washed: with raw water pump, filter puts into operation, opens weak acid sun bed intake gate, and normal flow is just being washed 15-20min during with operation does not have hardness to water outlet.
Five, strong acid sun bed is little just washes: open successively strong acid sun bed intake gate, middle row's door and weak acid sun bed and go out water valve, close weak acid sun bed and just arranging door, just wash with 10 m/hs of flow velocitys, just washing a little and got final product in 2-3 minute.According to actual conditions, if do not carry out littlely just washing, affect also little.
Six, strong acid sun bed is just washed: open strong acid sun bed and just washing drainage door, and row's door in closing, normal flow just is being washed till Na during with operation
+＜100ug/l, just washing qualified after, stop the operation of raw water pump and filter, close weak acid sun bed intake gate and go out water valve, open air gate, close strong acid sun bed intake gate and just washing drainage door, open air gate.This placing into reserve state.
Seven, small reverse washing: small reverse washing carries out after the 4th step, weak acid sun bed was just washed end, and small reverse washing is decided as the case may be, carries out once getting final product after several cycles of operation.
Eight, big reverse washing: big reverse washing carries out once 15-20 of operation or after the more cycle, and the concrete grammar of big reverse washing is with regeneration is identical separately.Use regeneration method of cation exchange reactor of water treatment ion-exchange demineralization system of the present invention, major advantage is as follows: 1, reduced sour consumption, saved cost, can obviously increase economic efficiency; 2, reduce 2-3 percentage point of auxiliary water ratio; 3, can shorten the recovery time greatly; 4, reduce the quantity discharged of spent acid, protected environment; 5, easy to operation, be convenient to realize automatization; 6, regeneration changes the repacking of series connection regenerated simply separately, and cost is low.
Claims (2)
1, regeneration method of cation exchange reactor of water treatment ion-exchange demineralization system, with weak acid sun bed and strong acid sun bed series connection regeneration, utilize the acid pickle of the regeneration strong acid sun bed weak acid sun bed of regenerating, it is characterized in that: full water series connection regeneration techniques, so-called full water series connection regeneration, allow exactly strong acid sun bed and weak acid sun bed be full of water, behind the air, close exhaust valve in the emptying bed, start water pump regeneration, allow regenerated liquid flow to weak acid sun bed with low flow velocity from strong acid sun bed, realize series connection regeneration; Behind the strong acid sun bed full water, packed resin layer is under water, and packed resin layer thickness is 200mm～250mm, is subjected to buoyancy and effect that packed resin layer is pressed down reduces greatly.
2, regeneration method of cation exchange reactor of water treatment ion-exchange demineralization system according to claim 1 is characterized in that the concrete operations step of present method is as follows:
One, full water operation: cut-in stand-by bed or stop raw water pump after the sun bed lost efficacy, after closing the sampling gate of strong acid sun bed and weak acid sun bed, close weak acid sun bed intake gate, after the pressure release, close successively weak acid sun bed and go out water valve and a strong acid sun import and export door, positive of weak acid sun bed and strong acid all are in full water state like this; Perhaps start regenerative pump, with the water inlet of the flow velocity below 1.5 m/hs, close exhaust valve behind the full water, realize full water;
Two, advance regenerated liquid: open successively that weak acid sun bed is just being arranged door, advanced the acid door, row's door and advance the acid door in the strong acid sun bed, start regenerative pump, intake gate is sprayed in turn on pump outlet portal, acid, transfer to 3-4 m/h with flow velocity is ascending, open sour batch meter outlet portal, adjust the concentration of acid, be advisable at 3-4%;
Three, displacement: after treating the regenerator of into intact institute expense, close the outlet portal of sour batch meter, de-mineralized water with former flow velocity washes to the acidity≤5mmol/l of weak acid sun bed water outlet, replacement completion, close the regenerative pump outlet portal, stop regenerative pump, close Acid injector intake gate, strong acid sun bed successively and advance acid door, middle row door and weak acid sun bed and advance acid;
Four, weak acid sun bed is just washed: with raw water pump, filter puts into operation, opens weak acid sun bed intake gate, and normal flow is just being washed 15-20min during with operation does not have hardness to water outlet;
Five, strong acid sun bed is little just washes: open successively strong acid sun bed intake gate, middle row's door and weak acid sun bed and go out water valve, close weak acid sun bed and just arranging door, just washing 2-3 minute with 10 m/hs of flow velocitys;
Six, strong acid sun bed is just washed: open strong acid sun bed and just washing drainage door, and row's door in closing, normal flow just is being washed till Na during with operation
+＜100ug/l, just washing qualified after, stop the operation of raw water pump and filter, close weak acid sun bed intake gate and go out water valve, open air gate, close strong acid sun bed intake gate and just washing drainage door, open air gate, this placing into reserve state;
Seven, small reverse washing: small reverse washing carries out after the 4th step, weak acid sun bed was just washed end, and small reverse washing is decided as the case may be, carries out once getting final product after several cycles of operation;
Eight, big reverse washing: big reverse washing carries out once 15-20 of operation or after the more cycle, and the concrete grammar of big reverse washing is with regeneration is identical separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100422555A CN100425541C (en) | 2005-03-30 | 2005-03-30 | Tech for regenerating cation exchanger for water treatment ion-exchange salt removing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100422555A CN100425541C (en) | 2005-03-30 | 2005-03-30 | Tech for regenerating cation exchanger for water treatment ion-exchange salt removing system |
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| CN1693220A CN1693220A (en) | 2005-11-09 |
| CN100425541C true CN100425541C (en) | 2008-10-15 |
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| CNB2005100422555A Expired - Fee Related CN100425541C (en) | 2005-03-30 | 2005-03-30 | Tech for regenerating cation exchanger for water treatment ion-exchange salt removing system |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910705A (en) * | 2012-11-09 | 2013-02-06 | 青海电力科学试验研究院 | Operation method of cation exchanger used for power station boiler feed water treatment system |
| CN105126938A (en) * | 2015-09-17 | 2015-12-09 | 南通海容热能环境工程有限公司 | Counter flow regenerative cation exchange process |
| CN113368907A (en) * | 2021-05-06 | 2021-09-10 | 华电电力科学研究院有限公司 | Two-step soaking regeneration process of Yangtze bed hydrochloric acid |
| CN114314753A (en) * | 2021-12-27 | 2022-04-12 | 湖南金牛化工有限公司 | Alkali-saving type anion bed regeneration treatment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56124448A (en) * | 1980-03-04 | 1981-09-30 | Ebara Infilco Co Ltd | Regeneration of multiple bed type ion exchanger |
| JPS60193547A (en) * | 1984-03-16 | 1985-10-02 | Kurita Water Ind Ltd | Regeneration method of ion exchange resin |
| CN1045360A (en) * | 1989-03-09 | 1990-09-19 | 邹萃林 | The renovation process of pure water preparation intermediate ion exchange resin |
| CN1047269A (en) * | 1990-03-24 | 1990-11-28 | 北京半导体器件十二厂 | Ion exchange resin specialty regeneration system rapidly and product |
| CN2684923Y (en) * | 2002-10-24 | 2005-03-16 | 北京市双峰纯水设备厂 | Ion exchange resin regenerator |
-
2005
- 2005-03-30 CN CNB2005100422555A patent/CN100425541C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56124448A (en) * | 1980-03-04 | 1981-09-30 | Ebara Infilco Co Ltd | Regeneration of multiple bed type ion exchanger |
| JPS60193547A (en) * | 1984-03-16 | 1985-10-02 | Kurita Water Ind Ltd | Regeneration method of ion exchange resin |
| CN1045360A (en) * | 1989-03-09 | 1990-09-19 | 邹萃林 | The renovation process of pure water preparation intermediate ion exchange resin |
| CN1047269A (en) * | 1990-03-24 | 1990-11-28 | 北京半导体器件十二厂 | Ion exchange resin specialty regeneration system rapidly and product |
| CN2684923Y (en) * | 2002-10-24 | 2005-03-16 | 北京市双峰纯水设备厂 | Ion exchange resin regenerator |
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| CN1693220A (en) | 2005-11-09 |
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Assignee: Shenzhen Ultrapure Environmental Engineering Ltd. Assignor: Ju Pengtao Contract fulfillment period: 2009.2.20 to 2017.2.19 contract change Contract record no.: 2009440000403 Denomination of invention: Tech for regenerating cation exchanger for water treatment ion-exchange salt removing system Granted publication date: 20081015 License type: Exclusive license Record date: 2009.5.25 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.2.20 TO 2017.2.19; CHANGE OF CONTRACT Name of requester: SHENZHEN CITY ULTRA-PURE ENVIRONMENTAL ENGINEERING Effective date: 20090525 |
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Granted publication date: 20081015 |