CN115180693A - Continuous electric desalting system for condensate polishing - Google Patents
Continuous electric desalting system for condensate polishing Download PDFInfo
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- CN115180693A CN115180693A CN202210813006.5A CN202210813006A CN115180693A CN 115180693 A CN115180693 A CN 115180693A CN 202210813006 A CN202210813006 A CN 202210813006A CN 115180693 A CN115180693 A CN 115180693A
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- 238000011033 desalting Methods 0.000 title claims abstract description 61
- 238000005498 polishing Methods 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 153
- 239000011347 resin Substances 0.000 claims abstract description 35
- 229920005989 resin Polymers 0.000 claims abstract description 35
- 239000012528 membrane Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 150000001768 cations Chemical class 0.000 claims description 22
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 18
- 238000010612 desalination reaction Methods 0.000 claims description 18
- 239000003011 anion exchange membrane Substances 0.000 claims description 13
- 238000005341 cation exchange Methods 0.000 claims description 13
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 claims description 12
- 150000001450 anions Chemical class 0.000 claims description 10
- 238000005342 ion exchange Methods 0.000 claims description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- 239000004005 microsphere Substances 0.000 claims description 9
- 239000003456 ion exchange resin Substances 0.000 claims description 8
- 229920003303 ion-exchange polymer Polymers 0.000 claims description 8
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims description 7
- 125000001624 naphthyl group Chemical group 0.000 claims description 7
- 238000003860 storage Methods 0.000 claims description 7
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 6
- 239000004793 Polystyrene Substances 0.000 claims description 6
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 6
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 238000009296 electrodeionization Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- KHOUKKVJOPQVJM-UHFFFAOYSA-N 2,2-bis(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical compound OC(=O)C=C.OCC(CO)(CO)CO KHOUKKVJOPQVJM-UHFFFAOYSA-N 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 3
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004342 Benzoyl peroxide Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- 150000001412 amines Chemical group 0.000 claims description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 3
- 125000000129 anionic group Chemical group 0.000 claims description 3
- 238000010560 atom transfer radical polymerization reaction Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 125000002091 cationic group Chemical group 0.000 claims description 3
- 239000003431 cross linking reagent Substances 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 3
- 239000005267 main chain polymer Substances 0.000 claims description 3
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000006277 sulfonation reaction Methods 0.000 claims description 3
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 2
- 230000002328 demineralizing effect Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005115 demineralization Methods 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000000338 in vitro Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
- C02F1/4695—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis electrodeionisation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/04—Non-contaminated water, e.g. for industrial water supply for obtaining ultra-pure water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/46—Apparatus for electrochemical processes
- C02F2201/461—Electrolysis apparatus
- C02F2201/46105—Details relating to the electrolytic devices
- C02F2201/46155—Heating or cooling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Electrochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a continuous electric desalting system for condensate polishing, which comprises: the electric desalting device comprises a first cooler for cooling condensed water, the electric desalting device provided with an electrode water chamber, and an electrode water circulating system for circularly cooling the electrode water chamber of the electric desalting device, wherein the electrode water circulating system comprises a deaerator, an electrode water tank, an electrode water circulating pump and a second cooler which are sequentially connected according to a water flow method, the deaerator is connected with a water outlet of the electrode water chamber, the second cooler is connected with a water inlet of the electrode water chamber, and the electrode water tank is provided with a desalted water replenishing pipe for replenishing desalted water. According to the technical scheme, in order to overcome the influence of the temperature of the condensed water on the resin, the membrane and the electrode of the electric desalting device, the condensed water is primarily cooled through the first cooler, and meanwhile, the polar water is separately and forcibly cooled in a circulating mode through the polar water circulating system, so that the electric desalting device can stably treat the condensed water for a long time and does not need to use a high-speed mixed bed with a complex process.
Description
Technical Field
The invention relates to the technical field of electric desalting, in particular to a continuous electric desalting system for condensate polishing.
Background
Condensate polishing generally adopts a high-speed mixed bed as the polishing of condensate according to DL/T333.1 technical requirements of condensate polishing systems of thermal power plants, and the high-speed mixed bed device has the defects of large occupied area and in-vitro acid-base chemical regeneration of resin after failure by sending the resin to a special resin regeneration device. The electric demineralizer in the prior art can work continuously without specially regenerating resin, but the conventional electric demineralizer is mainly used for preparing ultrapure water by reverse osmosis water production fine desalination at 4-40 ℃, the temperature of condensate water treatment is usually 45-47 ℃, the temperature is higher than that of common reverse osmosis water production, if the condensate water is used for treating the condensate water, the condensate water at 45-47 ℃ enters the electric demineralizer, internal resin and anion-cation membranes are dissolved, the exchange performance of the resin and the membranes is reduced, the temperature of polar water is too high, electrode frame deformation leakage and the like are caused, the service life of the electrodes is influenced by long-time operation, and the electrodes are burnt seriously.
Disclosure of Invention
1. Solves the technical problem
Aiming at the defects of the prior art, the invention provides a continuous electric desalting system for condensate polishing, which solves the problems that the existing high-speed mixed bed is complex in process and cannot be used for condensate treatment due to the limitation of the water inlet temperature of an electric desalting device.
2. Technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
a continuous electric desalting system for condensate polishing is characterized by comprising:
a first cooler for cooling the condensed water,
the electric desalting device is connected with the first cooler and comprises an electrode and an electrode water chamber which is arranged on the side of the electrode and is used for carrying away anions or cations;
the electrode water circulating system is connected with the electrode water chamber of the electric desalting device and is used for circularly cooling the electrode water chamber of the electric desalting device; the polar water circulation system comprises a deaerator, a polar water tank, a polar water circulating pump and a second cooler which are sequentially connected according to a water flow method, the deaerator is connected with a water outlet of the polar water chamber, the second cooler is connected with a water inlet of the polar water chamber, and the polar water tank is provided with a demineralized water replenishing pipe for replenishing demineralized water.
Optionally, the continuous electric desalting system further comprises a desalting water tank for storing desalting water, the desalting water of the electric desalting device is led to the desalting water tank, and the desalting water replenishing pipe of the polar water tank is communicated with the desalting water tank.
Optionally, the continuous electric desalting system further comprises a condensed water storage tank, a water feeding pump, a cartridge filter and a booster pump, wherein the first cooler, the condensed water storage tank, the water feeding pump, the cartridge filter, the electric desalting device, the desalting water tank and the booster pump are sequentially connected.
Optionally, the polar water in the polar water chambers on the positive electrode side and the negative electrode side of the electric desalting device is merged and then enters the polar water circulating system.
Optionally, the electric demineralization device further comprises an anion exchange membrane, a cation exchange membrane and an ion exchange resin which are positioned between the electrode water chambers;
the anion exchange membrane: firstly, synthesizing an all-carbon main chain polymer of polystyrene methyl styrene by adopting atom transfer radical polymerization reaction, and grafting a quaternary amine type cation functional group containing naphthyl and a long alkyl chain on a side chain to obtain a naphthyl side chain type anion exchange membrane;
the cation exchange membrane: acrylic acid is used as a main monomer, ammonium persulfate and dibenzoyl peroxide are used as initiators, pentaerythritol acrylic acid is used as a cross-linking agent, and the polypropylene non-woven fabric is subjected to graft modification to prepare the homogeneous cation exchange membrane.
Optionally, the anion exchange membrane has an ion exchange capacity of 1.30-1.40mmol/g, a water content of 28-32% and an ionic conductivity of 75-80ms/cm.
Optionally, the cation exchange membrane has an ion exchange capacity of 0.8-0.9mmol/g, a water content of 28-32%, and a membrane area resistance of 3.0-3.5 Ω · cm2.
Optionally, the ion exchange resin comprises a cation resin and an anion resin;
the cationic resin: dissolving linear polystyrene with the mass fraction of 1% in monomer styrene and divinylbenzene to prepare cross-linked cation resin microspheres, dissolving the linear styrene in the microspheres by using ethyl acetate to generate a large amount of gaps in the cation resin microspheres, and introducing sulfonic acid groups after sulfonation to prepare cation resin;
the anionic resin: is prepared from styrene, divinylbenzene and benzoyl peroxide.
Optionally, the particle size of the cation resin is 0.5-0.125mm and accounts for 95% or more, the volume exchange capacity is 3.0-3.5mmol/ml, and the seepage-grinding sphericity rate is 99.0% or more.
Optionally, the particle size of the anion resin is 1.07-1.01mm and accounts for more than 95%, the volume exchange capacity is 2.8-3.2mmol/ml, and the infiltration grinding sphericity rate is 99.5% or more.
3. Advantageous effects
The invention provides a continuous electric desalting system for condensate fine treatment, which is used for overcoming the influence of the temperature of condensate on resin, a membrane and electrodes of an electric desalting device, preliminarily cooling the condensate through a first cooler, and simultaneously, forcibly cooling the polar water separately through a polar water circulating system in a circulating way, so that the electric desalting device can stably treat the condensate for a long time without using a high-speed mixed bed with a complex process.
Drawings
FIG. 1 is a system schematic of a continuous electric desalination system for condensate polishing according to the present invention;
FIG. 2 is a schematic structural view of the electric demineralizer of FIG. 1;
wherein 1-a first cooling device; 2-a condensed water storage tank; 3-a water supply pump; 4-cartridge filter; 5-an electric desalting device; 5 a-an electrode; 5 b-an electrode water chamber; 5 c-an anion exchange membrane; 5 d-cation exchange membrane; 5 e-ion exchange resin; 6-desalting water tank; 7-a booster pump; 8 a-a deaerator; 8 b-pole water tank; 8 c-polar water circulation pump; 8 d-a second cooler; 9-a demineralized water replenishing pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
FIG. 1 is a system diagram illustrating a continuous electrical desalination system for condensate polishing in accordance with an exemplary embodiment of the present application; as shown in fig. 1, a continuous electric demineralization system for condensate polishing includes a first cooling apparatus 1 for cooling down condensate, a condensate storage tank 2 for storing the condensate, a feed pump 3, a cartridge filter 4, an electric demineralizer 5 for demineralizing the condensate, a demineralizing water tank 6 for storing the demineralizing water, a booster pump 7 for externally supplying the demineralizing water, and an electrode water circulation system for circularly cooling down an electrode water chamber of the electric demineralizer 5; the first cooling device 1, the condensed water storage tank 2, the water feeding pump 3, the cartridge filter 4, the electric desalting device 5, the desalting water tank 6 and the booster pump 7 are sequentially connected.
In detail, referring to fig. 2, the electric demineralizer 5 includes electrodes 5a, polar water chambers 5b on the side of the electrodes 5a for removing anions or cations, and an anion exchange membrane 5c, a cation exchange membrane 5d, and an ion exchange resin 5e between the polar water chambers 5 b.
In detail, referring to fig. 1, the polar water circulating system is connected to the polar water chamber 5b of the electric desalination device 5, and is configured to circularly cool the polar water chamber 5b of the electric desalination device 5; the electrode water circulating system comprises a deaerator 8a, an electrode water tank 8b, an electrode water circulating pump 8c and a second cooler 8d which are sequentially connected according to a water flow method, electrode water of the anode side electrode water chamber 5b and electrode water of the cathode side electrode water chamber 5b of the electric desalting device 5 are connected after being converged, the second cooler 8d is connected with a water inlet of the electrode water chamber 5b, the electrode water tank 8b is provided with a desalted water replenishing pipe 9 for replenishing desalted water, and the desalted water replenishing pipe 9 is connected with the desalted water tank 6 to replenish the desalted water to the electric desalting device 5.
In detail, the anion exchange membrane 5c: firstly, synthesizing an all-carbon main chain polymer of polystyrene methyl styrene by adopting atom transfer radical polymerization reaction, and grafting a quaternary amine type cation functional group containing naphthyl and a long alkyl chain on a side chain to obtain a naphthyl side chain type anion exchange membrane 5c; the anion exchange membrane 5c has the ion exchange capacity of 1.30-1.40mmol/g, the water content of 28-32% and the ionic conductivity of 75-80ms/cm.
In detail, the cation exchange membrane 5d: acrylic acid is used as a main monomer, ammonium persulfate and dibenzoyl peroxide are used as initiators, pentaerythritol acrylic acid is used as a cross-linking agent, and the polypropylene non-woven fabric is subjected to graft modification to prepare the homogeneous cation exchange membrane 5d. The cation exchange membrane 5d has an ion exchange capacity of 0.8-0.9mmol/g, a water content of 28-32%, and a membrane area resistance of 3.0-3.5 Ω & cm 2 。
In detail, the ion exchange resin 5e includes a cation resin and an anion resin.
In more detail, the cationic resin: dissolving linear polystyrene with the mass fraction of 1% in monomer styrene and divinylbenzene to prepare cross-linked cation resin microspheres, dissolving the linear styrene in the microspheres by using ethyl acetate to generate a large amount of gaps in the cation resin microspheres, and introducing sulfonic acid groups after sulfonation to prepare cation resin; the particle diameter of the cation resin is 0.5-0.125mm and accounts for 95% or more, the volume exchange capacity is 3.0-3.5mmol/ml, and the penetration and grinding sphericity rate is 99.0% or more.
In more detail, the anionic resin: is prepared from styrene, divinylbenzene and benzoyl peroxide. The particle size of the anion resin is 1.07-1.01mm and accounts for more than 95%, the volume exchange capacity is 2.8-3.2mmol/ml, and the seepage-grinding sphericity rate is 99.5% or more.
It should be noted that the prepared and synthesized homogeneous cation membrane and naphthyl side chain type anion membrane have larger ion exchange capacity, lower membrane area resistance, better thermal stability and mechanical property, and the thermal stability of the prepared and synthesized ion exchange resin is improved, so that the overall thermal stability of the electric desalting device is improved, and the electric desalting device can be stably applied to desalting treatment of condensed water.
Electric desalting: electrodeionization, hereinafter abbreviated as EDI, refers to a process of combining electrodialysis and ion exchange technology, filling an ion exchanger in a fresh water chamber of an electrodialyzer, and realizing electrodialysis, ion exchange desalination and ion exchange continuous electrical regeneration under the action of a direct current electric field.
Table 1 shows comparative parameters of the conventional continuous electric desalination system and a continuous electric desalination system for condensate polishing according to any exemplary embodiment of the present invention, wherein the continuous electric desalination system operates under 500h conditions of current, voltage, water quality and the like. The results are shown in table 1:
TABLE 1 comparison of parameters for conventional continuous electrodeionization systems and continuous electrodeionization systems of the invention
Table 2 shows the inlet and outlet water quality comparison parameters of a continuous electric desalting system for condensate polishing and a high-speed mixed bed according to any one of the exemplary embodiments of the present invention.
The results show that: according to the continuous electric desalting system for the fine treatment of the condensed water, the requirement of the water inlet temperature of the electric desalting device is increased to 50 ℃, the system can be well suitable for the treatment of the condensed water, the water temperature of the condensed water can meet the water inlet requirement of an EDI device after being initially cooled by the first cooler, and the water quality of produced water meets the standard requirement, and is superior to a high-speed mixed bed in hardness, sodium ion content, iron ion content and conductivity.
TABLE 2 comparison of parameters of the continuous electric desalting system of the present invention and the high-speed mixed bed
| Water quality project | EDI water intake | EDI Water inflow requirement | EDI produced water | Water quality requirement of desalted condensate | High-speed mixed bed water production |
| Water temperature (. Degree.C.) | 46-48 | 5-50 | ＜40 | ||
| PH | 7 | 5-9 | 6-7 | 6-7 | |
| Hardness (μmol/L) | ≈0 | <0.01 | ≈0 | 0.085 | |
| Turbidity of water | ≈0 | ≈0 | ≈0 | ≈0 | |
| Residual chlorine | ≈0 | ≈0 | 0 | 0 | |
| Sodium (μ g/L) | ≤5 | ≈0 | ≤3 | 2.5 | |
| Chloride ion (mu g/L) | ≤10 | ≈0 | ≤2 | ≈0 | |
| Iron (mu g/L) | ≤10 | ≈0 | ≤5 | 0.7 | |
| Conductivity (μ S/cm) | 3 | <50 | 0.055 | Less than or equal to 0.15 (hydrogen conductivity) | 0.1 |
It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A continuous electrical desalination system for condensate polishing, comprising:
a first cooler for cooling the condensed water,
the electric desalting device is connected with the first cooler and comprises an electrode and an electrode water chamber which is arranged on the side of the electrode and is used for carrying away anions or cations;
the electrode water circulating system is connected with the electrode water chamber of the electric desalting device and is used for circularly cooling the electrode water chamber of the electric desalting device; the polar water circulating system comprises a deaerator, a polar water tank, a polar water circulating pump and a second cooler which are sequentially connected according to a water flow method, the deaerator is connected with a water outlet of the polar water chamber, the second cooler is connected with a water inlet of the polar water chamber, and the polar water tank is provided with a demineralized water replenishing pipe for replenishing demineralized water.
2. A continuous electric desalination system for condensate polishing as claimed in claim 1, characterized in that: the continuous electric desalting system further comprises a desalting water tank for storing desalting water, the desalting water of the electric desalting device is led to the desalting water tank, and a desalting water replenishing pipe of the water tank is communicated with the desalting water tank.
3. A continuous electric desalination system for condensate polishing as claimed in claim 2, characterized in that: the continuous electric desalting system further comprises a condensed water storage tank, a water feeding pump, a cartridge filter and a booster pump, wherein the first cooler, the condensed water storage tank, the water feeding pump, the cartridge filter, the electric desalting device, the desalting water tank and the booster pump are sequentially connected.
4. A continuous electrodeionization system for polishing condensate as claimed in claim 1 or claim 2 or claim 3 wherein: and the polar water in the polar water chambers on the positive side and the negative side of the electric desalting device is converged and then enters the polar water circulating system.
5. A continuous electric desalination system for condensate polishing as claimed in claim 4, characterized in that: the electric desalting device also comprises an anion exchange membrane, a cation exchange membrane and ion exchange resin which are positioned between the polar water chambers;
the anion exchange membrane: firstly, synthesizing an all-carbon main chain polymer of polystyrene methyl styrene by adopting atom transfer radical polymerization reaction, and grafting a quaternary amine type cation functionalized group containing naphthyl and long alkyl chain on a side chain to obtain a naphthyl side chain type anion exchange membrane;
the cation exchange membrane: acrylic acid is used as a main monomer, ammonium persulfate and dibenzoyl peroxide are used as initiators, pentaerythritol acrylic acid is used as a cross-linking agent, and the polypropylene non-woven fabric is subjected to graft modification to prepare the homogeneous cation exchange membrane.
6. A continuous electric desalination system for condensate polishing as claimed in claim 5, characterized in that: the anion exchange membrane has the ion exchange capacity of 1.30-1.40mmol/g, the water content of 28-32% and the ionic conductivity of 75-80ms/cm.
7. A continuous electric desalination system for condensate polishing as claimed in claim 5, characterized in that: the cation exchange membrane has ion exchange capacity of 0.8-0.9mmol/g, water content of 28-32%, and membrane area resistance of 3.0-3.5 Ω cm 2 。
8. A continuous electric desalination system for condensate polishing as claimed in claim 5, characterized by: the ion exchange resin comprises cation resin and anion resin;
the cationic resin: dissolving linear polystyrene with the mass fraction of 1% in monomer styrene and divinylbenzene to prepare cross-linked cation resin microspheres, dissolving the linear styrene in the microspheres by using ethyl acetate to generate a large amount of gaps in the cation resin microspheres, and introducing sulfonic acid groups after sulfonation to prepare cation resin;
the anionic resin: is prepared from styrene, divinylbenzene and benzoyl peroxide.
9. A continuous electric desalination system for condensate polishing as claimed in claim 8, characterized in that: the particle diameter of the cation resin is 0.5-0.125mm and accounts for 95% or more, the volume exchange capacity is 3.0-3.5mmol/ml, and the seepage-grinding sphericity rate is 99.0% or more.
10. A continuous electric desalination system for condensate polishing as claimed in claim 8, characterized in that: the particle diameter of the anion resin is 1.07-1.01mm and accounts for more than 95%, the volume exchange capacity is 2.8-3.2mmol/ml, and the penetration and grinding sphericity rate is 99.5% or more.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338784B1 (en) * | 1997-02-27 | 2002-01-15 | Asahi Glass Company Ltd. | Apparatus for producing deionized water |
| JP2005015500A (en) * | 2002-04-30 | 2005-01-20 | Sanyo Chem Ind Ltd | Polyurethane-forming polyol component comprising anionic diol and composition |
| CN101402497A (en) * | 2008-09-16 | 2009-04-08 | 王方 | Electric ion removing method and device for recycling inorganic ammonia nitrogen wastewater |
| CN102580586A (en) * | 2011-04-25 | 2012-07-18 | 大连理工大学 | Heterocycle polymer alkaline anion-exchange membrane and method for producing same |
| CN104592705A (en) * | 2014-11-21 | 2015-05-06 | 沈阳工业大学 | Solution grafting preparation method for PVDF anion exchange membrane |
| CN108695534A (en) * | 2018-04-24 | 2018-10-23 | 哈尔滨工业大学（威海） | A kind of vanadium cell both sexes Nafion amberplexes and preparation method thereof |
| CN111777237A (en) * | 2020-07-10 | 2020-10-16 | 三门核电有限公司 | Purification method for nuclear power plant evaporator sewage discharge system |
| CN114262035A (en) * | 2021-12-08 | 2022-04-01 | 西安西热水务环保有限公司 | Continuous electric desalting system and method |
-
2022
- 2022-07-11 CN CN202210813006.5A patent/CN115180693A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338784B1 (en) * | 1997-02-27 | 2002-01-15 | Asahi Glass Company Ltd. | Apparatus for producing deionized water |
| JP2005015500A (en) * | 2002-04-30 | 2005-01-20 | Sanyo Chem Ind Ltd | Polyurethane-forming polyol component comprising anionic diol and composition |
| CN101402497A (en) * | 2008-09-16 | 2009-04-08 | 王方 | Electric ion removing method and device for recycling inorganic ammonia nitrogen wastewater |
| CN102580586A (en) * | 2011-04-25 | 2012-07-18 | 大连理工大学 | Heterocycle polymer alkaline anion-exchange membrane and method for producing same |
| CN104592705A (en) * | 2014-11-21 | 2015-05-06 | 沈阳工业大学 | Solution grafting preparation method for PVDF anion exchange membrane |
| CN108695534A (en) * | 2018-04-24 | 2018-10-23 | 哈尔滨工业大学（威海） | A kind of vanadium cell both sexes Nafion amberplexes and preparation method thereof |
| CN111777237A (en) * | 2020-07-10 | 2020-10-16 | 三门核电有限公司 | Purification method for nuclear power plant evaporator sewage discharge system |
| CN114262035A (en) * | 2021-12-08 | 2022-04-01 | 西安西热水务环保有限公司 | Continuous electric desalting system and method |
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