CN105271581A - Boiler feed water treatment system high in water yield - Google Patents
Boiler feed water treatment system high in water yield Download PDFInfo
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- CN105271581A CN105271581A CN201510812263.7A CN201510812263A CN105271581A CN 105271581 A CN105271581 A CN 105271581A CN 201510812263 A CN201510812263 A CN 201510812263A CN 105271581 A CN105271581 A CN 105271581A
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Abstract
The invention discloses a boiler feed water treatment system high in water yield, and belongs to the technical field of water treatment. The boiler feed water treatment system comprises a lifting pump, a multi-medium filter, an ultrafiltration water inlet tank, a pressurization pump, a security filter, an ultrafiltration device, an ultrafiltration water production tank, a first-stage high-pressure pump, a first-stage reverse osmosis device, a first-stage reverse osmosis water production tank, a second-stage high-pressure pump, a second-stage reverse osmosis device, a second-stage reverse osmosis water production tank, a continuous electrodeionization device, a boiler water feed tank, an electrodialysis device and a water feed pump. The system has the advantages of being simple in structure, convenient to operate, high in water yield, long in service life, good in economic benefits and the like. Process water drainage can be used for plant desulfuration, dust restraining, slag flushing and the like, and nearly zero release is achieved for the system.
Description
Technical field
The present invention relates to water treatment field, particularly a kind of oiler feed treatment system of high yield water rate.
Background technology
Oiler feed quality is prerequisite and the core of boiler safety steady running, the problems such as the bad easy fouling of feedwater quality, boiler corrosion, steam quality deterioration.Along with the development of science and technology and people are to the attention of water treatment field, the related process of water treatment field and equipment all obtained significant progress in the last few years.Ultrafiltration+reverse osmosis technology is a kind of new feedwater treatment method, has economical and efficient, simple to operate, is easy to the advantage that other conventional arts such as automatization are incomparable, is widely used in the fields such as sea water desaltination, wastewater treatment and boiler feed water.
Continuous electric desalination technology is a kind of new pure water and ultrapure water technology of preparing that electrodialytic technique and ion exchange technique are merged mutually, by anions and canons exchange membrane to the selectivity of anions and canons through effect and ion exchange resin to the exchange interaction of ion, the directional migration of ion is realized under the effect of DC electric field, thus completing the deep desalting of water, water quality can reach 15M more than Ω .cm.While carrying out desalination, the hydrogen ion that water power dissociation produces and hydroxide ion regenerate ion exchange resin, therefore do not need soda acid chemical reagent regenerate and can produce ultrapure water continuously.It possesses skills environmental protection characteristic advanced, easy and simple to handle and excellent, is effective guarantee of boiler feedwater quality.
The process of the membrane sepn such as current ultrafiltration, reverse osmosis can produce dense water, wherein the dense Water Sproading rate of ultra-filtration equipment can up to more than 95%, and the dense Water Sproading rate of reverse osmosis unit is only between 45% ~ 80%, if reverse osmosis concentrated water is directly discharged, cause the huge waste of water resources on the one hand, the saltiness of dense water is higher on the other hand, can bring larger harm to environment.If dense water can be processed, can not only save energy, protection of the environment, can produce huge economic benefit and wide market outlook simultaneously.
For the process of reverse osmosis concentrated water, now a set of reverse osmosis unit of increase separately that adopts processes more, the water quality requirement of reverse osmosis unit to water inlet is higher, the saltiness of dense water is higher, hardness is comparatively large, and required operating pressure is also high, if directly enter reverse osmosis unit, easily cause reverse osmosis membrane surface scale, need frequent cleaning.Utilize traditional dense water of distillation technique process, need to consume a large amount of steam, equipment is complicated, and cost is high.
Summary of the invention
For Problems existing in existing oiler feed treating processes, the invention solves producing water ratio in oiler feed treating processes low, dense water directly discharges the pollution and waste problem that cause.
The oiler feed treatment system of high yield water rate of the present invention, includes lift pump, more medium filter, ultrafiltration water tank inlet, topping-up pump, cartridge filter, ultra-filtration equipment, ultrafiltration product water tank, one-level booster pump, first-stage reverse osmosis device, first-stage reverse osmosis product water tank, two stage supercharging pump, second level reverse osmosis apparatus, continuous electric desalination device, oiler feed water tank, electrodialysis unit, feedwater water pump.
Further, described lift pump, more medium filter, ultrafiltration water tank inlet connect successively by water inlet direction; Ultrafiltration water tank inlet is connected with ultra-filtration equipment by topping-up pump, cartridge filter successively; Ultra-filtration equipment produces water tank by ultrafiltration successively, one-level booster pump is connected with the water-in of first-stage reverse osmosis device; The fresh water production mouth of a river of first-stage reverse osmosis device is connected with second level reverse osmosis apparatus by secondary water tank inlet, two stage supercharging pump successively; The fresh water production mouth of a river of second level reverse osmosis apparatus is connected with continuous electric desalination device, the fresh water outlet mouth of continuous electric desalination device is connected with oiler feed water tank.
Further, the dense aquatic products mouth of a river of first-stage reverse osmosis device and the dense aquatic products mouth of a river of two reverse osmosis units are connected with the water inlet of electrodialysis unit.
Further, the fresh water production mouth of a river of electrodialysis unit is connected with ultrafiltration water tank inlet; The dense aquatic products mouth of a river water outlet of electrodialysis is used for desulfurization, dust suppression, flushing cinder etc.
Further, the dense aquatic products mouth of a river of described continuous electric desalination device is connected with secondary water tank inlet.
The present invention utilizes ultrafiltration+reverse osmosis unit+continuous electric desalination device to produce oiler feed, and recycling pole-reversing electroosmosis device processes reverse osmosis concentrated water, and system is produced water and met oiler feed requirement, and producing water ratio is high.The present invention has technical maturity, operation automation is high, system producing water ratio is high, working cost is low, long service life, the feature such as good in economic efficiency, a kind of high-efficient simple, can life-time service, there is the oiler feed treatment system of higher reliability and novelty.
Accompanying drawing explanation
The oiler feed treatment system process flow sheet of a kind of high yield water rate of Fig. 1 the present invention.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is further described.
Embodiment 1
Fig. 1 is the structure drawing of device of oiler feed treatment system of the present invention, mainly comprise: lift pump (1), more medium filter (2), ultrafiltration inlet chest (3), topping-up pump (4), cartridge filter (5), ultra-filtration equipment (6), water tank (7) is produced in ultrafiltration, topping-up pump (8), first-stage reverse osmosis device (9), secondary water tank inlet (10), two stage supercharging pump (11), second level reverse osmosis apparatus (12), continuous electric desalination device (13), oiler feed water tank (14), service pump (15), electrodialysis unit (16).Particularly, tap water promotes through lift pump (1) and enters more medium filter (2) filtration, effect retains most of macrobead particle and other solid impurity, meet the requirement that ultra-filtration equipment runs, filter water outlet and enter ultrafiltration inlet chest (3), through topping-up pump (4), cartridge filter (5) enters ultra-filtration equipment (6), ultrafiltration system removes most organic, the pollution substances such as microorganism, effluent quality is made to reach feed water by reverse osmosis water quality requirement, ultra-filtration water enters ultrafiltration and produces water tank (7), first-stage reverse osmosis device (9) is entered through topping-up pump (8), water outlet is through secondary water tank inlet (10), two stage supercharging pump (11) enters second level reverse osmosis apparatus (12), second level reverse osmosis apparatus (12) water outlet enters continuous electric desalination device (13), enter oiler feed water tank (14) afterwards, through service pump (15) supply boiler feed water.Continuous electric desalination concentrate recirculation repeats two-pass reverse osmosis treating processes again to second level reverse osmosis apparatus; The dense water of first-stage reverse osmosis and the dense water of two-pass reverse osmosis enter electrodialysis and process, electric osmose division water reenters ultrafiltration system and carries out re-treatment, like this in system work process, only electrodialysis and ultra-filtration process discharge the dense water of a small amount of electrodialysis and the dense water of ultrafiltration, the dense water of this part can be used for the techniques such as desulfurization, dust suppression, flushing cinder, and system is close to zero release.Sterilant, Scale inhibitors can be added to ensure the processing property of reverse osmosis unit through medicine system in system.
More medium filter 2 of the present invention adopts conventional high media filtration system, can remove the materials of particle more than 200 μm such as the silt in former water, iron rust, colloidalmaterial, suspended substance;
Cartridge filter 3 selects pressure reduction to be the carbon block filter of 1.3MPa;
Ultra-filtration equipment 6 adopts material to be the high antipollution ultra-filtration membrane of polyvinylidene difluoride (PVDF), and membrane pore size is 0.01 μm.
First-stage reverse osmosis device 9 and second level reverse osmosis apparatus 12 are use the reverse osmosis unit that pressure is 800Psi, and ratio of desalinization is 99.6%;
The continuous electric desalination device that continuous electric desalination device 13 adopts market enterprising;
Electrodialysis unit selects conventional electrodialysis unit.
Embodiment 2
Using certain heat power plant's tap water as research object, process prepared by oiler feed is carried out according to the technique shown in Fig. 1, adopt the technological line of ultrafiltration-two-pass reverse osmosis-continuous electric desalination, water inlet specific conductivity is about 1000 μ S/cm, and after the desalting treatment of second level reverse osmosis apparatus, specific conductivity reduces to about 5 μ S/cm, reverse osmosis concentrated electrical conductivity of water is about 3500 μ S/cm, reverse osmosis membrane adopts SW30-2540/540GPD type, and use pressure is 800Psi, and ratio of desalinization is 99.6%.Reverse osmosis produced water is after the advanced desalination process of continuous electric desalination device, and the desalination electrical conductivity of water of output reduces to about 0.2 μ S/cm, meets the requirement of boiler feed water; Electric drive membrane stack median septum size 270mm*110mm used, useful area is 200cm
2, electric drive membrane stack adopts ion-exchange membrane, and both sides are respectively a pair painting ruthenium-iridium-tantalum anodic-cathodic, and internal anionic exchange membrane and cationic exchange membrane are alternately placed, and forms concentrated storage tank and fresh water storage tank respectively.Reverse osmosis concentrated water is after the desalting treatment of pole-reversing electroosmosis device, and electric osmose division water conductivity is down to about 1000 μ S/cm, meets feed water by reverse osmosis water quality requirement, can come back to feedwater preparation system and process.Use device of the present invention, be not only enterprise and solve boiler supply water, and system producing water ratio is up to 95%, more only use 75% producing water ratio of ultrafiltration-two-pass reverse osmosis technique high, achieve the water treatment system of high yield water rate.
Claims (8)
1. the oiler feed treatment system of a high yield water rate, it is characterized in that, the oiler feed treatment system of described high yield water rate includes lift pump (1), more medium filter (2), ultrafiltration water tank inlet (3), topping-up pump (4), cartridge filter (5), ultra-filtration equipment (6), water tank (7) is produced in ultrafiltration, one-level booster pump (8), first-stage reverse osmosis device (9), first-stage reverse osmosis produces water tank (10), two stage supercharging pump (11), second level reverse osmosis apparatus (12), continuous electric desalination device (13), oiler feed water tank (14), electrodialysis unit (16), feedwater water pump (15).
2. oiler feed treatment system as claimed in claim 1, is characterized in that, described lift pump (1), more medium filter (2), ultrafiltration water tank inlet (3) connect successively by water inlet direction; Ultrafiltration water tank inlet (3) is connected with ultra-filtration equipment (6) by topping-up pump (4), cartridge filter (5) successively; Ultra-filtration equipment (6) produces water tank (7) by ultrafiltration successively, one-level booster pump (8) is connected with the water-in of first-stage reverse osmosis device (9); The fresh water production mouth of a river of first-stage reverse osmosis device (9) is connected with second level reverse osmosis apparatus (12) by secondary water tank inlet (10), two stage supercharging pump (11) successively; The fresh water production mouth of a river of second level reverse osmosis apparatus (12) is connected with continuous electric desalination device (13), the fresh water outlet mouth of continuous electric desalination device (13) is connected with oiler feed water tank (14).
3. oiler feed treatment system as claimed in claim 1 or 2, it is characterized in that, the dense aquatic products mouth of a river of described first-stage reverse osmosis device (9) is connected with the water inlet of electrodialysis unit (16).
4. oiler feed treatment system as claimed in claim 1 or 2, it is characterized in that, the dense aquatic products mouth of a river of described two reverse osmosis units (12) is connected with the water inlet of electrodialysis unit (16).
5. oiler feed treatment system as claimed in claim 3, it is characterized in that, the dense aquatic products mouth of a river of described two reverse osmosis units (12) is connected with the water inlet of electrodialysis unit (16).
6. oiler feed treatment system as claimed in claim 1 or 2, it is characterized in that, the fresh water production mouth of a river of described electrodialysis unit (16) is connected with ultrafiltration water tank inlet (3).
7. oiler feed treatment system as claimed in claim 1 or 2, it is characterized in that, the dense aquatic products mouth of a river of described continuous electric desalination device (13) is connected with secondary water tank inlet (10).
8. the using method of the oiler feed treatment system described in claim 1 or 2, it is characterized in that, described method is that tap water enters more medium filter (2) through lift pump (1) lifting, filter water outlet and enter ultrafiltration inlet chest (3), through topping-up pump (4), cartridge filter (5) enters ultra-filtration equipment (6), ultra-filtration water enters ultrafiltration and produces water tank (7), first-stage reverse osmosis device (9) is entered through topping-up pump (8), water outlet is through secondary water tank inlet (10), two stage supercharging pump (11) enters second level reverse osmosis apparatus (12), second level reverse osmosis apparatus (12) water outlet enters continuous electric desalination device (13), enter oiler feed water tank (14) afterwards, through service pump (15) supply boiler feed water.
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| CN201510812263.7A CN105271581A (en) | 2015-11-21 | 2015-11-21 | Boiler feed water treatment system high in water yield |
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| CN201510812263.7A CN105271581A (en) | 2015-11-21 | 2015-11-21 | Boiler feed water treatment system high in water yield |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107417023A (en) * | 2017-06-13 | 2017-12-01 | 王卫星 | A kind of method using electric drive UF membrane desulfurization wastewater |
| CN108658354A (en) * | 2018-06-15 | 2018-10-16 | 无锡容大环境科技有限公司 | The Boiler water Feeding System system of high concentrtion |
| CN111499103A (en) * | 2020-04-27 | 2020-08-07 | 莱特莱德（北京）环境技术股份有限公司 | Alcohol wastewater recycling system based on membrane technology |
| WO2022143272A1 (en) * | 2020-12-29 | 2022-07-07 | 中海油天津化工研究设计院有限公司 | Seawater desalination process system for supplying boiler supplemental water for thermal recovery of heavy oil in offshore oil fields |
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| CN101830587A (en) * | 2010-04-26 | 2010-09-15 | 烟台大学 | Process and device for processing heavy metal wastewater |
| CN103177784A (en) * | 2013-03-28 | 2013-06-26 | 清华大学 | Method for treating radioactive wastewater |
| US20150251137A1 (en) * | 2011-07-18 | 2015-09-10 | Hl Seawater Holdings, Llc | Membrane and electrodialysis based seawater desalination with salt, boron and gypsum recovery |
| CN205635189U (en) * | 2015-11-21 | 2016-10-12 | 青岛海大北方节能有限公司 | Boiler feed water processing system of high yield water rate |
-
2015
- 2015-11-21 CN CN201510812263.7A patent/CN105271581A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830587A (en) * | 2010-04-26 | 2010-09-15 | 烟台大学 | Process and device for processing heavy metal wastewater |
| US20150251137A1 (en) * | 2011-07-18 | 2015-09-10 | Hl Seawater Holdings, Llc | Membrane and electrodialysis based seawater desalination with salt, boron and gypsum recovery |
| CN103177784A (en) * | 2013-03-28 | 2013-06-26 | 清华大学 | Method for treating radioactive wastewater |
| CN205635189U (en) * | 2015-11-21 | 2016-10-12 | 青岛海大北方节能有限公司 | Boiler feed water processing system of high yield water rate |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107417023A (en) * | 2017-06-13 | 2017-12-01 | 王卫星 | A kind of method using electric drive UF membrane desulfurization wastewater |
| CN108658354A (en) * | 2018-06-15 | 2018-10-16 | 无锡容大环境科技有限公司 | The Boiler water Feeding System system of high concentrtion |
| CN111499103A (en) * | 2020-04-27 | 2020-08-07 | 莱特莱德（北京）环境技术股份有限公司 | Alcohol wastewater recycling system based on membrane technology |
| CN111499103B (en) * | 2020-04-27 | 2022-08-16 | 莱特莱德（北京）环境技术股份有限公司 | Alcohol wastewater recycling system based on membrane technology |
| WO2022143272A1 (en) * | 2020-12-29 | 2022-07-07 | 中海油天津化工研究设计院有限公司 | Seawater desalination process system for supplying boiler supplemental water for thermal recovery of heavy oil in offshore oil fields |
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Application publication date: 20160127 |