CN105126938A - Counter flow regenerative cation exchange process - Google Patents
Counter flow regenerative cation exchange process Download PDFInfo
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- CN105126938A CN105126938A CN201510589543.6A CN201510589543A CN105126938A CN 105126938 A CN105126938 A CN 105126938A CN 201510589543 A CN201510589543 A CN 201510589543A CN 105126938 A CN105126938 A CN 105126938A
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Abstract
The invention relates to a counter flow regenerative cation exchange process. The process mainly comprises the steps of selecting resin, immersing the resin in solution and then performing cleaning; operating equipment, opening a valve and closing the valve after water is full; performing small backwashing, opening the valve and controlling flow speed to be 10m/h; opening a regenerating solution inlet valve and controlling flow speed to be 5m/h, wherein the concentration of regenerating solution is 3 to 5 percent; after regeneration, closing the regenerating solution inlet valve and an intermediate solution drain valve, enabling the regenerating solution to be fully exchanged with exchange agent for a period of time and then performing backwashing; then opening a water inlet valve, opening the intermediate solution drain valve to enable water to be drained from an intermediate drain device and controlling flow speed to be 10 to 15m/h; then opening the water inlet valve and a forward washing water drain valve to perform forward washing, wherein the flow speed is the same as the operating flow speed; finally opening a backwashing water inlet valve from small to large, controlling backwashing strength to be on the centerline of backwashing sight glass, and opening a backwashing water drain valve to perform backwashing. The counter flow regenerative cation exchange process has the advantage that various mineral salts in water can be effectively removed by implementing the steps of the counter flow regenerative cation exchange process.
Description
Technical field
The present invention relates to ion-exchange process, particularly a kind of counter-current regeneration cation exchange technique.
Background technology
Counter-current regeneration cation exchange technique is achieved mainly through cation exchanger, wherein cation exchanger is a kind of equipment for obtaining being further purified after natural water pretreatment, when import water quality saliferous total amount is at below 5mg/L, be connected into one-level multiple-hearth with anion exchanger to use, then the salt content of water outlet can be down to below 1.0mg/L, siliceous is less than or equal to 0.1mg/L, electrical conductivity is less than or equal to 10/cm, and the pure water after process can supply the industrial department application such as medium-pressure boiler, electronics, medicine, papermaking, chemical industry and oil.
Traditional ion regeneration exchange process only carries out forward and reverse cleaning, although step is few, but unidirectional cleaning process length consuming time, water consumption are large, cleaning efficiency is low simultaneously, therefore be badly in need of development a kind of consuming time short, water consumption is little and the counter-current regeneration cation exchange technique that operating efficiency is high, through retrieval, do not find the same or analogous technical scheme with the present invention.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of consuming time short, water consumption is little and the counter-current regeneration cation exchange technique that operating efficiency is high.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of counter-current regeneration cation exchange technique, and its innovative point is: described exchange process is specific as follows:
(1) resin is screened: first resin is screened (removing shredded resin, granularity is less than 0.3mm), then soak with solution and rinse; With pump, resin is loaded from equipment entrance, carry out a backwash again after resin access arrangement, after backwash terminates, proceed to operation;
(2) equipment runs: open water intaking valve, air bleeding valve, closes air valve, open the outlet valve of bottom, until normally run when water is expired;
(3) small reverse washing: introduced from intermediate drain installation by small reverse washing water, opens small reverse washing water intaking valve, and flow velocity is 10m/h, then opens backwash draining valve, after small reverse washing terminates, closes small reverse washing water intaking valve and backwash draining valve;
(4) regenerate: out of service immediately when effluent quality drops to the index of defined, close water intaking valve and outlet valve, then open regenerated liquid inlet valve, be input into the bottom of regenerated liquid from equipment, then open middle tapping valve, regeneration liquid waste is discharged by middle row's mouth; Regeneration velocity is 5m/h, and regeneration solution concentration is 3 ~ 5%, and the time is 40 ~ 60 minutes, and the time that regenerated liquid contacts with exchanger is greater than 40 minutes;
(5) backwash: close regenerated liquid inlet valve and middle tapping valve after regeneration, regenerated liquid and exchanger is made fully to exchange a period of time, then backwash water intaking valve and the backwash draining valve of opening bottom carry out backwash, irrigation flow rate should be equal with regeneration velocity, rinses to effluent characteristics meets the requirements;
(6) littlely just to wash: open water intaking valve, then open middle tapping valve, water is discharged from intermediate drain installation, and flow velocity is 10 ~ 15m/h, and the time is 5 minutes, tapping valve in the middle of then closing;
(7) just wash: open water intaking valve and just washing draining valve, just washing, flow velocity, with running flow velocity, is closed and is just washed draining valve, open outlet valve, normal operation input when water meets the requirements;
(8) big reverse washing: open backwash water intaking valve, valve is ascending, backwash strength control is as the criterion at the center line of backwash visor, opens backwash draining valve and carries out backwash.
Further, the solution in described step (1) select concentration be 8 ~ 10% sodium chloride solution, and by resin place wherein soak 20 hours.
Further, the solution in described step (1) select concentration be 5% dilute hydrochloric acid solution, and by resin place wherein soak 2 ~ 4 hours.
Further, in described step (2), equipment runs front inside and arranges a water subfill.
The invention has the advantages that:
(1) enforcement of counter-current regeneration cation exchange processing step effectively can remove the various mineral salts in water; First in small reverse washing process, small reverse washing water is introduced from intermediate drain installation, in order to keep the not random layer of exchanger; Secondly in counter-current regeneration process, part waste liquid may be had to infiltrate in packed resin layer, just wash the time for saving just washing water consumption and shortening, with little positive washing method, this part waste liquid being washed away before just washing; When last counter-current regeneration runs continuously, due to exchanger be compacted, pollution etc., so a big reverse washing must be carried out after exchange runs a period of time, the gap periods of big reverse washing can be determined according to situations such as influent turbidity, effluent characteristics, operation pressure reduction and exchange capacities, generally runs 10 ~ 20 cycles and carries out once.
(2) solution soaked after Resin sieving selection can select concentration be 8 ~ 10% sodium chloride solution, and resin placed wherein soak 20 hours, bleed off solution afterwards, with water rinse resin, until primary water not in till yellow.
(3) solution soaked after Resin sieving selection also can select concentration be 5% dilute hydrochloric acid solution, and by resin place wherein soak 2 ~ 4 hours, after bleeding off solution afterwards, with water rinse resin to draining close to neutrality.
(4) equipment runs front inside and arranges a water subfill, and anti-sealing directly impacts the packed resin layer of resin layer surface.
Detailed description of the invention
embodiment 1
The invention discloses a kind of counter-current regeneration cation exchange technique, this exchange process is specific as follows:
(1) screen resin: first (removing shredded resin, granularity is less than 0.3mm) is screened to resin, then select concentration be 6 ~ 8% sodium chloride solution, and resin is placed wherein immersion 15 hours, bleed off solution afterwards, with water rinse resin, till primary water is not in yellow; With pump, resin is loaded from equipment entrance, carry out a backwash again after resin access arrangement, after backwash terminates, proceed to operation;
(2) equipment runs: open water intaking valve, air bleeding valve, closes air valve, open the outlet valve of bottom, until normally run when water is expired;
(3) small reverse washing: introduced from intermediate drain installation by small reverse washing water, opens small reverse washing water intaking valve, and flow velocity is 10m/h, then opens backwash draining valve, after small reverse washing terminates, closes small reverse washing water intaking valve and backwash draining valve;
(4) regenerate: out of service immediately when effluent quality drops to the index of defined, close water intaking valve and outlet valve, then open regenerated liquid inlet valve, be input into the bottom of regenerated liquid from equipment, then open middle tapping valve, regeneration liquid waste is discharged by middle row's mouth; Regeneration velocity is 4m/h, and regeneration solution concentration is 2 ~ 3%, and the time is 40 ~ 60 minutes, and the time that regenerated liquid contacts with exchanger is greater than 40 minutes;
(5) backwash: close regenerated liquid inlet valve and middle tapping valve after regeneration, regenerated liquid and exchanger is made fully to exchange a period of time, then backwash water intaking valve and the backwash draining valve of opening bottom carry out backwash, irrigation flow rate should be equal with regeneration velocity, rinses to effluent characteristics meets the requirements;
(6) littlely just to wash: open water intaking valve, then open middle tapping valve, water is discharged from intermediate drain installation, and flow velocity is 10 ~ 15m/h, and the time is 5 minutes, tapping valve in the middle of then closing;
(7) just wash: open water intaking valve and just washing draining valve, just washing, flow velocity, with running flow velocity, is closed and is just washed draining valve, open outlet valve, normal operation input when water meets the requirements;
(8) big reverse washing: open backwash water intaking valve, valve is ascending, backwash strength control is as the criterion at the center line of backwash visor, opens backwash draining valve and carries out backwash.
embodiment 2
The present embodiment 2 is compared to embodiment 1, and difference is the concentration of the sodium chloride solution that the resin in step (1) soaks is 8 ~ 10%, and soak time is 20 hours; Regeneration velocity in step (4) is 5m/h, and regeneration solution concentration is 3 ~ 5%.
embodiment 3
The present embodiment 3 is compared to embodiment 1, and difference is the concentration of the sodium chloride solution that the resin in step (1) soaks is 10 ~ 12%, and soak time is 25 hours; Regeneration velocity in step (4) is 6m/h, and regeneration solution concentration is 5 ~ 7%.
According to above-described embodiment, the resin regeneration utilization rate in embodiment 2 is the highest; Ion-exchanger capacity is high simultaneously, the regeneration period is long, regeneration level is high and effluent quality is good, and the concentration of the sodium chloride solution therefore selecting resin to soak is 8 ~ 10%, and soak time is 20 hours, and the regeneration velocity of regenerated liquid is 5m/h, and regeneration solution concentration is 3 ~ 5%.
embodiment 4
A kind of counter-current regeneration cation exchange technique is specific as follows:
(1) resin is screened: first (removing shredded resin is screened to resin, granularity is less than 0.3mm), then select concentration be 3% dilute hydrochloric acid solution, and by resin place wherein soak 1 ~ 2 hour, bleed off solution after immersion terminates, with water rinse resin to draining close to neutrality; With pump, resin is loaded from equipment entrance, carry out a backwash again after resin access arrangement, after backwash terminates, proceed to operation;
(2) equipment runs: open water intaking valve, air bleeding valve, closes air valve, open the outlet valve of bottom, until normally run when water is expired;
(3) small reverse washing: introduced from intermediate drain installation by small reverse washing water, opens small reverse washing water intaking valve, and flow velocity is 10m/h, then opens backwash draining valve, after small reverse washing terminates, closes small reverse washing water intaking valve and backwash draining valve;
(4) regenerate: out of service immediately when effluent quality drops to the index of defined, close water intaking valve and outlet valve, then open regenerated liquid inlet valve, be input into the bottom of regenerated liquid from equipment, then open middle tapping valve, regeneration liquid waste is discharged by middle row's mouth; Regeneration velocity is 4m/h, and regeneration solution concentration is 2 ~ 3%, and the time is 40 ~ 60 minutes, and the time that regenerated liquid contacts with exchanger is greater than 40 minutes;
(5) backwash: close regenerated liquid inlet valve and middle tapping valve after regeneration, regenerated liquid and exchanger is made fully to exchange a period of time, then backwash water intaking valve and the backwash draining valve of opening bottom carry out backwash, irrigation flow rate should be equal with regeneration velocity, rinses to effluent characteristics meets the requirements;
(6) littlely just to wash: open water intaking valve, then open middle tapping valve, water is discharged from intermediate drain installation, and flow velocity is 10 ~ 15m/h, and the time is 5 minutes, tapping valve in the middle of then closing;
(7) just wash: open water intaking valve and just washing draining valve, just washing, flow velocity, with running flow velocity, is closed and is just washed draining valve, open outlet valve, normal operation input when water meets the requirements;
(8) big reverse washing: open backwash water intaking valve, valve is ascending, backwash strength control is as the criterion at the center line of backwash visor, opens backwash draining valve and carries out backwash.
embodiment 5
The present embodiment 5 is compared to embodiment 4, and difference is the dilute hydrochloric acid solution concentration that the resin in step (1) soaks is 5%, and soak time is 2 ~ 4 hours; Regeneration velocity in step (4) is 5m/h, and regeneration solution concentration is 3 ~ 5%.
embodiment 6
The present embodiment 6 is compared to embodiment 4, and difference is the dilute hydrochloric acid solution concentration that the resin in step (1) soaks is 7%, and soak time is 4 ~ 6 hours; Regeneration velocity in step (4) is 6m/h, and regeneration solution concentration is 5 ~ 7%.
According to above-described embodiment, the resin regeneration utilization rate in embodiment 5 is the highest, and selects dilute hydrochloric acid solution short compared to the soak time of sodium chloride solution; Ion-exchanger capacity is high simultaneously, the regeneration period is long, regeneration level is high and effluent quality is good, and the dilute hydrochloric acid solution concentration therefore selecting resin to soak is 5%, and soak time is 2 ~ 4 hours, and the regeneration velocity of regenerated liquid is 5m/h, and regeneration solution concentration is 3 ~ 5%.
More than show and describe general principle of the present invention and principal character.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (4)
1. a counter-current regeneration cation exchange technique, is characterized in that: described exchange process is specific as follows:
(1) resin is screened: first resin is screened (removing shredded resin, granularity is less than 0.3mm), then soak with solution and rinse; With pump, resin is loaded from equipment entrance, carry out a backwash again after resin access arrangement, after backwash terminates, proceed to operation;
(2) equipment runs: open water intaking valve, air bleeding valve, closes air valve, open the outlet valve of bottom, until normally run when water is expired;
(3) small reverse washing: introduced from intermediate drain installation by small reverse washing water, opens small reverse washing water intaking valve, and flow velocity is 10m/h, then opens backwash draining valve, after small reverse washing terminates, closes small reverse washing water intaking valve and backwash draining valve;
(4) regenerate: out of service immediately when effluent quality drops to the index of defined, close water intaking valve and outlet valve, then open regenerated liquid inlet valve, be input into the bottom of regenerated liquid from equipment, then open middle tapping valve, regeneration liquid waste is discharged by middle row's mouth; Regeneration velocity is 5m/h, and regeneration solution concentration is 3 ~ 5%, and the time is 40 ~ 60 minutes, and the time that regenerated liquid contacts with exchanger is greater than 40 minutes;
(5) backwash: close regenerated liquid inlet valve and middle tapping valve after regeneration, regenerated liquid and exchanger is made fully to exchange a period of time, then backwash water intaking valve and the backwash draining valve of opening bottom carry out backwash, irrigation flow rate should be equal with regeneration velocity, rinses to effluent characteristics meets the requirements;
(6) littlely just to wash: open water intaking valve, then open middle tapping valve, water is discharged from intermediate drain installation, and flow velocity is 10 ~ 15m/h, and the time is 5 minutes, tapping valve in the middle of then closing;
(7) just wash: open water intaking valve and just washing draining valve, just washing, flow velocity, with running flow velocity, is closed and is just washed draining valve, open outlet valve, normal operation input when water meets the requirements;
(8) big reverse washing: open backwash water intaking valve, valve is ascending, backwash strength control is as the criterion at the center line of backwash visor, opens backwash draining valve and carries out backwash.
2. a kind of counter-current regeneration cation exchange technique according to claim 1, is characterized in that: the solution in described step (1) select concentration be 8 ~ 10% sodium chloride solution, and by resin place wherein soak 20 hours.
3. a kind of counter-current regeneration cation exchange technique according to claim 1, is characterized in that: the solution in described step (1) select concentration be 5% dilute hydrochloric acid solution, and by resin place wherein soak 2 ~ 4 hours.
4. a kind of counter-current regeneration cation exchange technique according to claim 1, is characterized in that: in described step (2), equipment runs front inside and arranges a water subfill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510589543.6A CN105126938A (en) | 2015-09-17 | 2015-09-17 | Counter flow regenerative cation exchange process |
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| CN201510589543.6A CN105126938A (en) | 2015-09-17 | 2015-09-17 | Counter flow regenerative cation exchange process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569745A (en) * | 2018-12-06 | 2019-04-05 | 中电环保股份有限公司 | Cation exchange resin automatic regeneration device and method |
| CN109926106A (en) * | 2019-03-27 | 2019-06-25 | 兆德（南通）电子科技有限公司 | A kind of ion exchange resin external regeneration technique |
| CN110624611A (en) * | 2019-03-27 | 2019-12-31 | 兆德（南通）电子科技有限公司 | Cation resin regeneration process |
| CN111533216A (en) * | 2020-05-12 | 2020-08-14 | 江西晶昊盐化有限公司 | Method for recovering anion and cation resin |
| CN111569956A (en) * | 2020-04-14 | 2020-08-25 | 开能健康科技集团股份有限公司 | Regeneration process of exchange resin of water softener |
| CN114560531A (en) * | 2022-03-29 | 2022-05-31 | 佛山市三水区大塘污水处理有限公司 | Zero-row resin softening process |
| CN116371479A (en) * | 2023-02-24 | 2023-07-04 | 南京霖厚环保科技有限公司 | Multifunctional ion exchange resin regeneration device and regeneration control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693220A (en) * | 2005-03-30 | 2005-11-09 | 鞠鹏涛 | Tech for regenerating cation exchanger for water treatment ion-exchange salt removing system |
| CN102399580A (en) * | 2010-09-15 | 2012-04-04 | 中国石油天然气股份有限公司 | Demetalization method by hydrocarbon oil |
| JP2015080750A (en) * | 2013-10-22 | 2015-04-27 | 栗田工業株式会社 | Ion exchange resin column |
-
2015
- 2015-09-17 CN CN201510589543.6A patent/CN105126938A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1693220A (en) * | 2005-03-30 | 2005-11-09 | 鞠鹏涛 | Tech for regenerating cation exchanger for water treatment ion-exchange salt removing system |
| CN102399580A (en) * | 2010-09-15 | 2012-04-04 | 中国石油天然气股份有限公司 | Demetalization method by hydrocarbon oil |
| JP2015080750A (en) * | 2013-10-22 | 2015-04-27 | 栗田工業株式会社 | Ion exchange resin column |
Non-Patent Citations (1)
| Title |
|---|
| 吴春华 编: "《超超临界火电机组培训系列教材 电厂化学分册》", 31 January 2013 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569745A (en) * | 2018-12-06 | 2019-04-05 | 中电环保股份有限公司 | Cation exchange resin automatic regeneration device and method |
| CN109926106A (en) * | 2019-03-27 | 2019-06-25 | 兆德（南通）电子科技有限公司 | A kind of ion exchange resin external regeneration technique |
| CN110624611A (en) * | 2019-03-27 | 2019-12-31 | 兆德（南通）电子科技有限公司 | Cation resin regeneration process |
| CN111569956A (en) * | 2020-04-14 | 2020-08-25 | 开能健康科技集团股份有限公司 | Regeneration process of exchange resin of water softener |
| CN111533216A (en) * | 2020-05-12 | 2020-08-14 | 江西晶昊盐化有限公司 | Method for recovering anion and cation resin |
| CN111533216B (en) * | 2020-05-12 | 2022-04-22 | 江西晶昊盐化有限公司 | Method for recovering anion and cation resin |
| CN114560531A (en) * | 2022-03-29 | 2022-05-31 | 佛山市三水区大塘污水处理有限公司 | Zero-row resin softening process |
| CN116371479A (en) * | 2023-02-24 | 2023-07-04 | 南京霖厚环保科技有限公司 | Multifunctional ion exchange resin regeneration device and regeneration control method thereof |
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Address after: 226000 Jiangsu mayor of Nantong Road No. 695 Applicant after: Jiangsu Hairong Thermal AND Environmental Engineering Co., Ltd. Address before: 226000 Jiangsu, Nantong, Gangzha District, North Ring Road, No. 438 Applicant before: Nantong Hairong Heat Energy Environmental Engineering Co., Ltd. |
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