CN204198498U - A kind of electrochemistry incrustation scale removal device - Google Patents
A kind of electrochemistry incrustation scale removal device Download PDFInfo
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- CN204198498U CN204198498U CN201420574937.5U CN201420574937U CN204198498U CN 204198498 U CN204198498 U CN 204198498U CN 201420574937 U CN201420574937 U CN 201420574937U CN 204198498 U CN204198498 U CN 204198498U
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Abstract
This application provides a kind of electrochemistry incrustation scale removal device, comprise the incrustation scale nucleus generation unit for electro-chemical water process; Described incrustation scale nucleus generation unit comprises cell body; The bottom of described cell body is provided with water-in and sewage draining exit; The top of described cell body is provided with water outlet; Be arranged at the rotating cathode of the inside of described cell body; Be arranged at the anode of the inside of described cell body.In this application, near rotating cathode, aqueous electrolysis produces OH
-near rotating cathode interfacial layer obtain pH value up to 14 strong alkali solution, the incrustation scale nucleus that formed on rotating cathode surface in electrochemical process and in interfacial layer is diffused in solution by rotating electrode, and a large amount of nucleus is crystal growing surface and the crystal Active Growth point that scale-forming ion in solution provides super large; Because the surface area ratio rotating cathode surface of a large amount of small nucleus amasss much larger times, the probability of scale-forming ion crystallization increases greatly, and scale removal efficiency also just increases.
Description
Technical field
The utility model belongs to incrustation scale removal device field, particularly relates to a kind of electrochemistry incrustation scale removal device.
Background technology
Electrochemical techniques, as a kind of clean incrustation scale control techniques, in refrigeration cycle water treatment, have passed through practical application for many years.Electrochemistry removes incrustation scale multiple advantage: environmental friendliness, can not bring environmental pollution; Do not need dispose and add chemical; Automatization and more convenient technology controlling and process can be realized.And main difficulty be most of incrusted deposit at cathode surface, cause resistance raise and current efficiency decline.
At present, several scale treatment methods of employing comprise polarity inversion and ultrasonic cleaning.As the application number Chinese patent literature that is 200620032114.5 discloses a kind of electrochemical reactor of the operation of falling pole, this electrochemical reactor is in electro-chemical water treating processes, negative electrode incrustation scale can constantly thicken, it makes negative electrode incrustation scale come off by pole, but frequently pole-reversing scale removal, will make the anode loss of catalytic activity of electrolyzer, electrode will be caused to produce very high overvoltage, current efficiency declines, and then reduces scale removal ability.And for example publication number is that the Chinese patent literature of CN101585569A discloses circulating water electrolytic descaling device and descaling method, this device adopts ultrasonic wave to carry out automatic desludging cleaning, when the thickness of incrustation scale increases, resistance on the loop that test electrode and reaction chamber are formed increases, when this resistance value reaches set(ting)value, automatically enter cleaning and descaling process; The incrustation scale produced then discharges reaction chamber, enters tripping device and incrustation scale is carried out precipitate and separate.Above-mentioned negative electrode incrustation scale is all deposit to certain thickness to clean again, and this can make resistance rise, increase energy consumption, reduces scale removal ability.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of electrochemistry incrustation scale removal device, and the electrochemistry incrustation scale removal device that the utility model provides has higher electrochemistry scale removing ability.
This application provides a kind of electrochemistry incrustation scale removal device, comprise the incrustation scale nucleus generation unit for electro-chemical water process;
Described incrustation scale nucleus generation unit comprises cell body;
The bottom of described cell body is provided with water-in and sewage draining exit;
The top of described cell body is provided with water outlet;
Be arranged at the rotating cathode of the inside of described cell body;
Be arranged at the anode of the inside of described cell body.
Preferably, described rotating cathode is carbon steel rotating cathode, stainless steel rotating cathode, titanium rotating cathode, titanium alloy rotating cathode or aluminium alloy rotating cathode.
Preferably, described rotating cathode is cylindric.
Preferably, described rotating cathode is tubular, and described anode arrangement is within the cylindrical chamber of rotating cathode.
Preferably, the inside of described cell body also comprises negative electrode scraper;
The two ends up and down of described cell body are end plate, and upper head plate is provided with draw-in groove;
Described negative electrode scraper is fixed on separately on the draw-in groove of the upper head plate of described cell body.
Preferably, the inside of described cell body also comprises barrier film;
Described barrier film is arranged between anode and rotating cathode, is divided into anolyte compartment and cathode compartment by corresponding for cell body.
Preferably, described barrier film is cationic membrane.
Preferably, described incrustation scale nucleus generation unit also comprises supporting electrode;
Described supporting electrode is positioned at cathode compartment.
Preferably, described supporting electrode is net-shaped stability electrode.
Preferably, described anode is net-shaped stability electrode or cylindric form-stability electrode.
This application provides a kind of electrochemistry incrustation scale removal device, comprise the incrustation scale nucleus generation unit for electrochemical treatment recirculated water; Described incrustation scale nucleus generation unit comprises cell body; The bottom of described cell body is provided with water-in and sewage draining exit; The top of described cell body is provided with water outlet; Be arranged at the rotating cathode of the inside of described cell body; Be arranged at the anode of the inside of described cell body.In the electrochemistry incrustation scale removal device that the application provides, pending water is entered incrustation scale nucleus generation unit from water-in bottom cell body, carry out electrochemical treatment, near anode, water electrolysis produces oxygen and oxyradical, generate hydrogen peroxide and ozone with the dissolved oxygen in water and water, chlorion is oxidized and generates chlorine near anode, and chlorine is combined with water further and generates hypochlorous acid and hydrochloric acid; Near rotating cathode, aqueous electrolysis produces OH
-, near rotating cathode, interfacial layer obtains strong alkali solution, and the incrustation scale nucleus formed on rotating cathode surface in electrochemical process and in interfacial layer is diffused in solution by rotating electrode, and the solution containing a large amount of incrustation scale nucleus discharges cell body from the water outlet on cell body top; The dirt generated in incrustation scale nucleus generation unit is then discharged by the sewage draining exit of cell body bottom.Rotating cathode in the electrochemistry incrustation scale removal device that the application provides enhances mass transfer process, produces the OH of high density near rotating cathode
-pH value reaches more than 9.5, scale-forming ion degree of supersaturation in this alkaline environment is very high, oversaturated scale-forming ion forms nucleus fast, under the relative movement effect of major part nucleus between rotating cathode and fixed doctor, be diffused in the aqueous solution, a large amount of nucleus is crystal growing surface and the crystal Active Growth point that scale-forming ion in solution provides super large; Due to much larger times of the surface area ratio rotating cathode area of a large amount of small nucleus, the probability of scale-forming ion crystallization increases greatly, and scale removal efficiency also just increases.
Further, the electrochemistry incrustation scale removal device that the application provides also comprises barrier film, electrolytic solution is kept apart for catholyte and anolyte by barrier film, current efficiency improves, negative electrode generating rate hydroxy and current efficiency journey direct ratio, the scale removal ability of single electrochemical cell brings up to original more than 10 times.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural representation of the electrochemistry incrustation scale nucleus generation unit that Fig. 1 provides for the utility model embodiment;
The structural representation of the electrochemistry incrustation scale nucleus generation unit that Fig. 2 provides for the utility model embodiment;
The decomposition texture schematic diagram of the barrier film that Fig. 3 provides for the utility model embodiment, supporting electrode and plastic wire;
The packaging assembly schematic diagram of the barrier film that Fig. 4 provides for the utility model embodiment, supporting electrode and plastic wire;
The decomposing schematic representation of the installation site of the negative electrode scraper that Fig. 5 provides for the utility model embodiment;
The assembling schematic diagram of the installation site of the negative electrode scraper that Fig. 6 provides for the utility model embodiment;
The electrochemistry incrustation scale removal device schematic diagram that Fig. 7 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
With reference to figure 1 ~ Fig. 6,1 is cell body, and 2 is rotating cathode, and 3 is anode, 4 is supporting electrode, and 5 is negative electrode scraper, and 6 is drive-motor, and 7 is anode terminal, 8 is copper ring, and 9 is supporting electrode terminal stud, and 10 is water-in, and 11 is catholyte outlet, 12 is anolyte outlet, and 13 is carbon brush, and 14 is sewage draining exit, and 15 is Anode chamber inlets, 16 fix ear for scraper, and 17 is cathode compartment, and 18 is anolyte compartment, 19 is coupling shaft, and 20 is barrier film, and 21 is plastic wire.
The incrustation scale removal device that the application provides comprises incrustation scale nucleus generation unit, and described incrustation scale nucleus generation unit comprises cell body 1.The nucleus of electrochemistry incrustation scale is created in cell body 1 and carries out.In the embodiment of the application, described cell body 1 can be cylindric, also can be square; The top and bottom of described cell body 1 are preferably end plate; Upper head plate is provided with draw-in groove.
In this application, the bottom of described cell body 1 is provided with water-in 10, and pending water enters in cell body 1 by water-in 10, carries out electrochemical treatment.
In this application, described incrustation scale nucleus generation unit comprises the anode 3 being arranged at described cell body 1 inside.In the embodiment of the application, in described cell body 1, at least one anode 3 is set; When described rotating cathode 2 is tubular, described anode 3 is arranged within rotating cathode 2 chamber, as shown in Figure 1, and the structural representation of the electrochemistry incrustation scale nucleus generation unit that Fig. 1 provides for the utility model embodiment; Or when rotating cathode 2 is cylindric, rotating cathode 2 by least one anode 3 around, as shown in Figure 2, the structural representation of the electrochemistry incrustation scale nucleus generation unit that Fig. 2 provides for the utility model embodiment.Near anode, water electrolysis produces oxygen and oxyradical, generates hydrogen peroxide and ozone with the dissolved oxygen in water and water, maintains the sterile environment that cell body is inner stronger, and part chlorion is oxidized to chlorine simultaneously, thus forms hypochlorite (ClO
-), hypochlorite has lasting anti-bacteria and grows ability.In the embodiment of the application, the anode that the application adopts can be net-shaped stability electrode or cylindric form-stability electrode (DSA), at 200A/m
2under the density conditions of above electric current, work-ing life is more than 5 years.
In this application, described incrustation scale nucleus generation unit comprises the rotating cathode 2 being arranged at described cell body 1 inside.In this application, described rotating cathode 2 is preferably with the circular frequency continuous rotation of 30rpm ~ 1500rpm; Described rotating cathode 2 is preferably cylindric; Described rotating cathode 2 is carbon steel rotating cathode, stainless steel rotating cathode, titanium rotating cathode, titanium alloy rotating cathode or aluminium alloy rotating cathode.Near rotating cathode, aqueous electrolysis produces OH
-near rotating cathode, interfacial layer obtains the basic solution of pH value more than 9.5, calcium carbonate and magnesium hydroxide are in hypersaturated state at interfacial layer, and calcium carbonate and magnesium hydroxide rapid crystallization in rotating cathode surface and interfacial layer, part incrustation scale is at rotating cathode surface crystallization.Rotating cathode enhances mass transfer process, produces the OH of high density near rotating cathode
-scale-forming ion degree of supersaturation in this alkaline environment is very high, oversaturated scale-forming ion forms nucleus fast, major part nucleus is between rotating cathode and fixed doctor during relative movement, be diffused in the aqueous solution, a large amount of nucleus is crystal growing surface and the crystal Active Growth point that scale-forming ion in solution provides super large; Because the surface area ratio rotating cathode surface of a large amount of small nucleus amasss much larger times, the probability of scale-forming ion crystallization increases greatly, and scale removal efficiency also just increases.
In this application, the rotatory power field technique personnel of described rotating cathode 2 realize preferably by the mode such as drive unit and gear driven; Described drive unit comprises coupling shaft 19 and drive-motor 6; Described coupling shaft is positioned at the bottom of cell body 1; Described drive-motor is positioned at the below of cell body 1; Described rotating cathode 2 is connected with drive-motor 6 by coupling shaft, and coupling shaft is simultaneously as the wire of rotating cathode, and the fixing copper ring 8 on coupling shaft is directly connected to the negative pole of direct supply by carbon brush 13.The positive pole of direct supply is connected with anode terminal 7 and supporting electrode terminal stud 9.
In this application, the top of described cell body 1 is provided with water outlet, after pending aqueous electrochemical is disposed, is discharged by the water after process from water outlet.The bottom of described cell body 1 is provided with sewage draining exit 14, by its discharge section incrustation scale.
This application provides a kind of electrochemistry incrustation scale removal device, comprise the incrustation scale nucleus generation unit for electro-chemical water process; Described incrustation scale nucleus generation unit comprises cell body; The bottom of described cell body is provided with water-in and sewage draining exit; The top of described cell body is provided with water outlet; Be arranged at the rotating cathode of the inside of described cell body; Be arranged at the anode of the inside of described cell body.The incrustation scale nucleus that formed on rotating cathode surface in electrochemical process and in interfacial layer is diffused in strong alkali solution by the rotating electrode in the electrochemistry incrustation scale removal device that the application provides, and a large amount of nucleus is crystal growing surface and the crystal Active Growth point that scale-forming ion in catholyte provides super large; Due to much larger times of the surface area ratio cathodic surface area of a large amount of small nucleus, the probability of scale-forming ion crystallization increases greatly, and scale removal efficiency also just increases.
In this application, described incrustation scale nucleus generation unit preferably also comprises barrier film 20, and described barrier film is arranged between anode 3 and rotating cathode 2, is divided into anolyte compartment 18 and cathode compartment 17 by corresponding for cell body 1.In this application, anode 3 is arranged in anolyte compartment, and rotating cathode 2 is arranged in cathode compartment.In this application, described barrier film 20 is preferably cationic membrane; In the embodiment of the application, described cationic membrane can be specially perfluorinated cation film, the N966 of the Nafion series of such as E.I.Du Pont Company.In some embodiment of the application, described barrier film 20 can be fixed separately, also can fix together with anode 3.
In this application, described incrustation scale nucleus generation unit preferably also comprises supporting electrode 4, and described supporting electrode 4 is arranged in cathode compartment.In some embodiment of the application, described incrustation scale nucleus generation unit preferably also comprises plastic wire 21, and described plastic wire 21 is set to bag-shaped, is contained in by barrier film in film bag, keeps the damages such as barrier film is not punctured; In this application, as shown in Figure 3, supporting electrode 4 is in the cathode compartment side of barrier film 20 for the decomposing schematic representation of described barrier film 20, supporting electrode 4 and plastic wire 21; Supporting electrode 4, barrier film 20 and plastic wire 21 are fitted together, as shown in Figure 4, the assembling schematic diagram of the embodiment septation 20 that Fig. 4 provides for the utility model, supporting electrode 4 and plastic wire 21.
In this application, described incrustation scale nucleus generation unit preferably also comprises negative electrode scraper 5, and described negative electrode scraper 5 can directly be fixed on the draw-in groove of the upper head plate of cell body 1, as shown in Figure 2.In this application, incrustation scale nucleus generation unit preferably also comprises supporting electrode 4, and described supporting electrode is between rotating cathode 2 and anode 3; Described supporting electrode 4 is preferably net-shaped stability supporting electrode; Negative electrode scraper 5 is provided with between described supporting electrode 4 and rotating cathode 2, described supporting electrode 4 is provided with scraper and fixes ear 16, the scraper that described negative electrode scraper 5 also can be arranged on supporting electrode 4 is fixed on ear 16, scheme of installation as shown in Figure 5 and Figure 6, the decomposing schematic representation of the installation site of the negative electrode scraper that Fig. 5 provides for the utility model embodiment; The assembling schematic diagram of the installation site of the negative electrode scraper that Fig. 6 provides for the utility model embodiment.In the utility model, the material of described negative electrode scraper 5 is enhanced polymer or pottery; Described enhancing polymkeric substance is preferably reinforced plastics; The shape of described negative electrode scraper can be rectangular shape, and length can be consistent with the length of rotating cathode, also can need to regulate with the length adjustment of negative electrode according to processing power.In the embodiment of the application, described negative electrode scraper is preferably 4, and 4 negative electrode scrapers preferably according to square pitch arrangement, and are preferably fixed as the caged thing of self stabilization by three circular supports; The material of described circular support is enhanced polymer, such as reinforced plastics; Caged thing can be fixed on the end plate of one end of cell body 1, as shown in Figure 1; Also can be fixed on the end plate at two ends up and down of cell body 1, as shown in Figure 2.In the utility model, the incrustation scale that rotating cathode 2 generates on the surface, by elastic device and described rotating cathode 2 and surface elasticity close contact, strikes off by described negative electrode scraper 5; Described close contact physical significance, for contact is apart from the smaller the better, is infinite approach.In this application, be provided with elastic device in the side of negative electrode scraper, described elastic device one end acts on negative electrode scraper, and the other end acts on scraper and fixes ear, and negative electrode scraper can move horizontally under the promotion of elastic device; When between negative electrode scraper is due to rotating cathode during frictionloss, elastic device can promote negative electrode scraper to be continued to keep and negative electrode close contact.In the embodiment of the present application, described elastic device can be specially spring.
The cell body of the below correspondence of the supporting electrode 4 of the electrochemistry incrustation scale removal device that the application provides is provided with Anode chamber inlets 15, described Anode chamber inlets 15 is provided with unidirectional facility, only allow the aqueous solution to flow into anolyte compartment 18, do not allow anolyte to flow out anolyte compartment 18 from Anode chamber inlets 15.
In the specific embodiment of the application, cell body 1 is divided into anolyte compartment and cathode compartment by barrier film 20 accordingly, there are two water outlets accordingly, the top of described cell body 1 is provided with catholyte outlet 11 and anolyte outlet 12, after the electrochemical reaction in incrustation scale nucleus generation unit terminates, anolyte is discharged from anolyte outlet 12, catholyte is discharged from catholyte outlet 11.
In this application, when electrochemical cell normally works, anode 3 is in conducting state, and supporting electrode 4 is in off-state; During electrochemical cell cleaning and regeneration, anode 3 is in off-state, and supporting electrode 4 is in conducting state, and rotating cathode 2 is when electrochemical cell normally works with cleaning and regeneration, is in conducting state all the time.
The electrochemistry incrustation scale removal device that the application provides preferably also comprises incrustation scale nucleus growth separating unit, the structure of described incrustation scale nucleus growth separating unit as shown in Figure 7, the electrochemistry incrustation scale removal device schematic diagram that Fig. 7 provides for the embodiment of the present application.In the figure 7, 2 is rotating cathode, 3 is anode, 17 is cathode compartment, 18 is anolyte compartment, 20 is barrier film, 22 is accurate filter, 23 is clean water basin, 24 is detritus pool, 25 is detritus pool supernatant liquor reflux pump, 26 is under meter, 27 is negative electrode water inlet storage tank, 28 is mud-removing bucket outlet, 29 is body refuse, 30 is electrolysis power, 31 is cathode compartment service pump, 32 is anode water inlet storage tank, 33 is anolyte compartment's service pump, 34 is hydrocyclone separation technology district, 35 is commutating zone, 36 is sloping plate deposition district, 37 is filtrating area, 38 is mud-removing bucket, 39 is catholyte pH value on-line detector, 40 is circulating water inlet road, 41 is cathode compartment inlet channel, 42 is cathode compartment service pump reflux line, 43 is anolyte compartment's inlet channel, 44 is catholyte outlet conduit, 45 is anolyte outlet conduit, 46 is circulatior clarifier outlet conduit, 47 is acid-base neutralisation pond outlet conduit, 48 is filter outlet pipe road, 49 is detritus pool supernatant liquor reflux line, 50 is flocculant concentration mouth, 51 is the anolyte in anolyte compartment's outlet conduit, 52 is acid-base neutralisation pond water outlet pH value on-line detector, 53 is automatic regulating valve door, 54 is acid-base neutralisation pond.
Pending water is entered into negative electrode water inlet storage tank 27 and anode water inlet storage tank 32 by inlet channel 40 by the application respectively, the output terminal of negative electrode water inlet storage tank 27 is connected with cathode compartment inlet channel 41, described cathode compartment inlet channel is provided with cathode compartment service pump 31, negative electrode water inlet storage tank 27 is under the effect of cathode compartment service pump 31, by cathode compartment inlet channel 41, pending water is transported to cathode compartment 17, cathode compartment inlet channel is provided with under meter 26, described under meter 26 measures flooding quantity, if flooding quantity is too much, by cathode compartment service pump reflux line 42, superfluous water is back to negative electrode water inlet storage tank 27, according to cathode compartment flooding quantity, volume pump adds flocculation agent by flocculant concentration mouth 50, described flocculation agent comprises ferric sulfate (Fe
2(SO
4)
3), aluminum chloride (AlCl
3), zinc chloride (ZnCl
2) and polymerize aluminum chloride (PAC) in one or more, the output terminal of anode water inlet storage tank 32 is connected with anolyte compartment's inlet channel 43, described anolyte compartment inlet channel is provided with anolyte compartment's service pump 33, pending water, under the effect of anolyte compartment's service pump 33, is transported to anolyte compartment 18 by anolyte compartment's inlet channel 43 by described anode water inlet storage tank 32, anode 3 is connected with the positive pole of electrolysis power 30, and rotating cathode 2 is connected with the negative pole of electrolysis power 30, starts electrolysis power, and start electrochemical reaction, electrochemical reaction process, as described in technique scheme, does not repeat them here.
The incrustation scale nucleus growth separating unit that the application provides is connected by the water outlet of pipeline with the incrustation scale nucleus generation unit described in technique scheme.The incrustation scale nucleus growth separating unit that the application provides comprises hydrocyclone separation technology district 34, commutating zone 35, sloping plate deposition district 36, filtrating area 37 and mud-removing bucket 38.
The incrustation scale nucleus growth separating unit that the application provides comprises hydrocyclone separation technology district 34, and described hydrocyclone separation technology district 34 is connected with cathode compartment 17 by catholyte outlet conduit 44.In this application, the pH value of the catholyte of discharging from cathode compartment is measured by catholyte pH value on-line detector 39, the catholyte containing a large amount of incrustation scale nucleus of alkalescence is entered hydrocyclone separation technology district by tangential direction, calcium ion, magnesium ion and bicarbonate ion in nucleus and catholyte are in hydrocyclone separation technology district spiral, collide between the nucleus generated in scale-forming ion in water and nucleus generation unit, scale-forming ion grows in the basic conditions further on nucleus, and crystal is grown up further; Mutually collide between crystal, class occurs and reunites, the crystal grain of growing up or the throw out of flocculation enter sludge discharging area under the influence of centrifugal force, also have the slightly little crystal grain of part to rise to commutating zone 35.
The incrustation scale nucleus growth separating unit that the application provides comprises commutating zone 35, and described commutating zone is above hydrocyclone separation technology district.In this application, less crystal grain then further growth and the reunion in commutating zone 35 is entered.In commutating zone 35, catholyte smooth flow, then enters sloping plate deposition district 36.
The incrustation scale nucleus growth separating unit that the application provides comprises sloping plate deposition district 36, and described sloping plate deposition district 36 is above commutating zone 35.In this application, crystal grows, flocculates and is agglomerated into slightly large scale crystal in described sloping plate deposition district 36, and precipitates under gravity.
The incrustation scale nucleus growth separating unit that the application provides comprises mud-removing bucket 38, and described mud-removing bucket 38 is in the below of hydraulic cyclone area 34.The application does not have special restriction to described mud-removing bucket, adopts mud-removing bucket well known to those skilled in the art.In this application, described incrustation scale nucleus growth separating unit preferably also comprises body refuse pond 24, and described body refuse pond 24 is connected with mud-removing bucket 38 by mud-removing bucket outlet 28; Body refuse is discharged in body refuse pond 24 by described mud-removing bucket 38 together with water, and the body refuse 29 depositing to bottom is disposed separately.Supernatant liquor in detritus pool, then under the effect of detritus pool supernatant liquor reflux pump 25, enters into pending water by detritus pool supernatant liquor backflow 49.
The incrustation scale nucleus growth separating unit that the application provides comprises filtrating area 37, and described filtrating area 37 is above sloping plate deposition district 36.In this application, the incrustation scale nucleus formed under electrolytic action mostly is aragonite crystallization, mostly is the crystal cluster of porous, slightly larger than the proportion of water, and filtrating area 37 is for tackling the scale crystal of escape.In the embodiment of the application, described filtrating area 37 can be specially filtering net; Described filtering net can be metal net, also can be nylon monofilament net; The aperture of described filtering net can be 10 μm ~ 120 μm, also can be 90 μm ~ 100 μm.
In this application, the output terminal of filtrating area 37 is connected with acid-base neutralisation pond 54 by circulatior clarifier outlet conduit 46; Water after filtrating area 37 processes enters into acid-base neutralisation pond 54 by circulatior clarifier outlet conduit 46, pH value in acid-base neutralisation pond is regulated and can be regulated by anolyte, the pH value in described acid-base neutralisation pond is measured by acid-base neutralisation pond water outlet pH value on-line detector 52, and described acid-base neutralisation pond water outlet pH value on-line detector 52 is arranged on the output terminal in acid-base neutralisation pond; Anolyte outlet conduit 45 is provided with variable valve 53, and the anolyte 51 in anolyte compartment's outlet conduit is used for adjust ph by a part for anolyte outlet conduit 45 by described variable valve 53; Described variable valve 53 is controlled by online pH detector; The pH value of the water outlet in described acid-base neutralisation pond controls between 7 ~ 8.
In this application, the water outlet in acid-base neutralisation pond is transported in accurate filter 22 by acid-base neutralisation pond outlet conduit 47, and the water side of described accurate filter 22 is connected with clean water basin 23 by filter outlet pipe road 48.The application does not have special restriction to described accurate filter, adopts accurate filter well known to those skilled in the art.Directly enter into clean water basin 23 through the water of accurate filter to store, complete water treatment whole process, for subsequent use.
In this application, under meter described in technique scheme, automatic regulating valve door, online conductivitimeter, pH value on-line detector etc. form control unit, described control unit can regulate Faradaic current size, the startup of electrolysis, stopping and rotating speed, the startup of Inlet and outlet water valve, stopping, monitoring water quality data, and can regulate according to the water quality data valve detected and rotating speed.
Particularly, in the embodiment of the application, the process that electrochemistry removes incrustation scale is as follows:
Pending water is entered into cell body 1 from the water-in of cell body 1, anode terminal 7 and supporting electrode terminal stud 9 are connected to the positive pole of electrolysis power, rotating cathode 2 is connected with drive-motor by coupling shaft, coupling shaft, as the wire of negative electrode, coupling shaft is fixed copper ring 8 is connected to direct supply negative pole by carbon brush 13; The line of the aqueous solution in cell body 1, anode 3, rotating cathode 2 and electrolysis power, form closing current loop, barrier film 20 is divided into cathode compartment and anolyte compartment by corresponding for cell body, will start electrolysis power, starts electrochemical reaction occurs near anode and negative electrode; In the anode compartment, water electrolysis produces oxygen and oxyradical, generates hydrogen peroxide and ozone with the dissolved oxygen in water and water, maintains the sterile environment that reaction chamber is inner stronger, and chlorion oxidation simultaneously generates chlorine, and chlorine and water react and generates hypochlorous acid and hydrochloric acid; In the cathodic compartment, near negative electrode interfacial layer obtain pH value up to 14 strong alkali solution, calcium carbonate and magnesium hydroxide are in hypersaturated state in interfacial layer, calcium carbonate and magnesium hydroxide possess the condition generating nucleus fast in cathode surface and interfacial layer, by the rotation of negative electrode, reinforcing mass transfer, the hydroxide radical that negative electrode is produced and established nucleus depart from cathode surface and interfacial layer is diffused in catholyte, nucleus is generated further in catholyte, the then further growth of existing nucleus, along with the carrying out of reaction, obtain the catholyte containing a large amount of nucleus; Subsequently the tangential direction that catholyte is exported by catholyte is entered nucleus growth separating unit, scale-forming ion in nucleus and catholyte rotates in eddy flow hybrid reaction district spirrillum and rises, nucleus further growth, nucleus are reunited, and the nucleus particle after growing up or the throw out of flocculation enter mud-removing bucket under the influence of centrifugal force and be removed; Part scale crystal then through eddy flow mixing and precipitation catholyte behind commutating zone, enter the further precipitate and separate in tube settling district, eventually pass filtrating area, complete the dirty removing processing of water.
This application provides a kind of electrochemistry incrustation scale removal device, comprise the incrustation scale nucleus generation unit for electro-chemical water process; Described incrustation scale nucleus generation unit comprises cell body; The bottom of described cell body is provided with water-in and sewage draining exit; The top of described cell body is provided with water outlet; Be arranged at the rotating cathode of the inside of described cell body; Be arranged at the anode of the inside of described cell body.In the electrochemistry incrustation scale removal device that the application provides, pending recirculated water is entered incrustation scale nucleus generation unit from water-in bottom cell body, carry out electrochemical treatment, near anode, water electrolysis produces oxygen and oxyradical, generate hydrogen peroxide and ozone with the dissolved oxygen in water and water, the chlorion simultaneously in water is oxidized to chlorine, and chlorine and water react and generates hypochlorous acid and hydrochloric acid; Near rotating cathode, aqueous electrolysis produces OH
-, near rotating cathode, interfacial layer obtains strong alkali solution, and the incrustation scale nucleus formed on rotating cathode surface in electrochemical process and in interfacial layer is diffused in solution by rotating electrode, and the solution containing a large amount of incrustation scale nucleus discharges cell body from the water outlet on cell body top; The dirt generated in incrustation scale nucleus generation unit is then discharged by the sewage draining exit of cell body bottom.Rotating cathode in the electrochemistry incrustation scale removal device that the application provides enhances mass transfer process, produces the OH of high density near rotating cathode
-, pH value reaches more than 9.5, and the scale-forming ion degree of supersaturation in this alkaline environment is very high, and oversaturated scale-forming ion forms nucleus fast, and a large amount of nucleus is crystal growing surface and the crystal Active Growth point that scale-forming ion in solution provides super large; Because the surface area ratio rotating cathode surface of a large amount of small nucleus amasss much larger times, the probability of scale-forming ion crystallization increases greatly, and scale removal efficiency also just increases.
Further, the electrochemistry incrustation scale removal device that the application provides also comprises barrier film, electrolytic solution is kept apart for catholyte and anolyte by barrier film, current efficiency improves, negative electrode generating rate hydroxy and current efficiency journey direct ratio, the scale removal ability of single electrochemical cell brings up to original more than 10 times.
Claims (10)
1. an electrochemistry incrustation scale removal device, comprises the incrustation scale nucleus generation unit for electro-chemical water process;
Described incrustation scale nucleus generation unit comprises cell body;
The bottom of described cell body is provided with water-in and sewage draining exit;
The top of described cell body is provided with water outlet;
Be arranged at the rotating cathode of the inside of described cell body;
Be arranged at the anode of the inside of described cell body.
2. electrochemistry incrustation scale removal device according to claim 1, is characterized in that, described rotating cathode is carbon steel rotating cathode, stainless steel rotating cathode, titanium rotating cathode, titanium alloy rotating cathode or aluminium alloy rotating cathode.
3. electrochemistry incrustation scale removal device according to claim 1, is characterized in that, described rotating cathode is cylindric.
4. electrochemistry incrustation scale removal device according to claim 1, is characterized in that, described rotating cathode is tubular, and described anode arrangement is within the cylindrical chamber of rotating cathode.
5. electrochemistry incrustation scale removal device according to claim 1, is characterized in that, the inside of described cell body also comprises negative electrode scraper;
The two ends up and down of described cell body are end plate, and upper head plate is provided with draw-in groove;
Described negative electrode scraper is fixed on separately on the draw-in groove of the upper head plate of described cell body.
6. electrochemistry incrustation scale removal device according to claim 1, it is characterized in that, the inside of described cell body also comprises barrier film;
Described barrier film is arranged between anode and rotating cathode, is divided into anolyte compartment and cathode compartment by corresponding for cell body.
7. electrochemistry incrustation scale removal device according to claim 6, is characterized in that, described barrier film is cationic membrane.
8. the electrochemistry incrustation scale removal device according to claim 6 or 7, is characterized in that, described incrustation scale nucleus generation unit also comprises supporting electrode;
Described supporting electrode is positioned at cathode compartment.
9. electrochemistry incrustation scale removal device according to claim 8, is characterized in that, described supporting electrode is net-shaped stability electrode.
10. electrochemistry incrustation scale removal device according to claim 1, is characterized in that, described anode is net-shaped stability electrode or cylindric form-stability electrode.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261573A (en) * | 2014-09-30 | 2015-01-07 | 章明歅 | Electrochemical water scale removal device |
| CN105621538A (en) * | 2016-03-11 | 2016-06-01 | 上海丁香环境科技有限公司 | Rotating electrode type water treatment device |
| CN105692922A (en) * | 2016-03-31 | 2016-06-22 | 张家富 | Water body descaling cleaning device |
| CN113292138A (en) * | 2021-06-25 | 2021-08-24 | 北京市永康药业有限公司 | Electrochemical water treatment equipment with descaling function |
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2014
- 2014-09-30 CN CN201420574937.5U patent/CN204198498U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261573A (en) * | 2014-09-30 | 2015-01-07 | 章明歅 | Electrochemical water scale removal device |
| CN104261573B (en) * | 2014-09-30 | 2015-12-30 | 章明歅 | A kind of electrochemistry incrustation scale removal device |
| CN105621538A (en) * | 2016-03-11 | 2016-06-01 | 上海丁香环境科技有限公司 | Rotating electrode type water treatment device |
| CN105692922A (en) * | 2016-03-31 | 2016-06-22 | 张家富 | Water body descaling cleaning device |
| CN105692922B (en) * | 2016-03-31 | 2018-06-29 | 张家富 | A kind of water body scale removal cleaning apparatus |
| CN113292138A (en) * | 2021-06-25 | 2021-08-24 | 北京市永康药业有限公司 | Electrochemical water treatment equipment with descaling function |
| CN113292138B (en) * | 2021-06-25 | 2022-07-19 | 北京市永康药业有限公司 | Electrochemical water treatment equipment with descaling function |
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