CN102658170B - Regeneration technology of V-Ti-based honeycomb SCR denitration catalyst, and apparatus thereof - Google Patents
Regeneration technology of V-Ti-based honeycomb SCR denitration catalyst, and apparatus thereof Download PDFInfo
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Abstract
The invention discloses a regeneration technology of a V-Ti-based honeycomb SCR denitration catalyst, and an apparatus thereof. A deactivated catalyst in the technology is regenerated through steps of pressurized water spraying, ultrasonic cleaning, secondary pressurized water spraying, air blow drying, active component supplement, secondary air blow drying, step calcining, and the like. Parameters of the regeneration technology, which comprise components of a cleaning solution, a pickling solution and an active supplement solution, are provided. By adopting the technology, the denitration activity of the deactivated catalyst is recovered, the structural strength of the catalyst is maintained, and the SO2 oxidation frequency is reduced. The apparatus used for realizing the technology comprises a pressurized water spraying pool, an ultrasonic cleaning pool, a secondary pressurized water spraying pool, a pickling pool, an air blow drying pool, an active component supplement pool, a secondary air blow drying pool, a calciner and the like which are sequentially arranged, and the device can realize the hoisting transport regeneration of a regeneration module, and has the characteristics of simplicity, convenient operation, and high efficiency.
Description
Technical field:
The present invention relates to the field of engineering technology of power plant's denitration and catalyst regeneration, be specifically related to a kind of technique and regenerating unit of the cellular SCR of vanadium titanium base (SCR) the denitrating catalyst regeneration that realizes deactivation.For realizing the regeneration of denitrating catalyst, save the cost of catalyst displacement.
Background technology:
China is the country taking coal as main energy sources, and the main source of electric power is the direct burning of thermal power plant coal.The pollutant of power plant emission comprises Atmospheric particulate matters, carbon dioxide, sulfur dioxide and nitrogen oxide (NO
x) etc., bring therefrom the environmental problems such as greenhouse effects, acid rain, photochemical fog.Wherein nitrogen oxide (NO
x) discharge capacity just reached 1,207 ten thousand tons the first half of the year in 2011.NO
xthe organs such as people's glasses are had compared with strong stimulation effect, also participate in the formation of acid rain and photochemical fog." fossil-fuel power plant atmospheric pollutant emission standard " that on January 1st, 2012 comes into effect is (GB13223-2011) to NO
xdischarge has had stricter regulation: require the discharge capacity of part new power plant construction nitrogen oxide to be less than 100mg/m
3, do not reach will charging according to " Administrative Regulations on Pollution Discharge Fee Levy " of discharge standard regulation.
NO
xemission control technique, is divided into low NO
xcombustion technology and gas denitrifying technology.SCR (SCR) denitration technology is to NO
xremoval effect remarkable, technology maturation, is current most widely used gas denitrifying technology.In whole SCR denitrating system, catalyst is core component, and the proportion accounting in equipment direct investment is larger.Wherein using maximum is vanadium titanium base honeycomb-shaped SCR denitrating catalyst.The scheme that the catalyst module major part of SCR denitrating system takes high dirt to arrange, the denitration performance of operation a period of time rear catalyst can decline, and shows as that reducing agent consumption increases, the oxygenation efficiency of sulfur dioxide rises, denitration efficiency declines, the resistance rising of denitrating system etc.Hydraulic performance decline causes while not reaching denitration requirement, will change catalyst module.Catalyst under changing will be regenerated or be discarded, and discarded mode is generally processed according to danger wastes, and the processing modes such as construction material are reclaimed and are used as in such as broken landfill, melting.The price of considering denitrating catalyst is higher, if realize efficiently catalyst regeneration, will greatly save denitration cost.
SCR denitrating system is in service, and in flue gas, Cucumber can little by little deposit at catalyst surface.The compound of the element such as alkali metal and arsenic wherein existing with aerosol form can make the catalyst position that loses activity, and stops up, covers, the reason such as erosion can make catalyst generation physics inactivation.Catalyst recovery process in existing patent, be generally through dry type purge and wet dip two step pre-treatments, then carry out active material load and be dried etc. processing.Publication number is the device that the patent of CN101543974A has provided a set of regeneration, comprises the equipment that carries out compressed air purging, cleaning, activation etc.Publication number be the patent of CN1768953A provided a kind of flow to reach by bubbling wash out pollutant, the device of recovery catalyst denitration activity.The patent No. is that the United States Patent (USP) of US 7741239 has provided the method for utilizing purging, cleaning agent flushing, alkaline salt bath to clean, to the denitrating catalyst of deactivation, especially because the technique that phosphorus compound fouled catalyst cleans.The patent No. is that the United States Patent (USP) of US 7569506 has provided a kind of SCR denitrating catalyst having risen for SO2 oxygenation efficiency and carries out acid-treated technology.The patent No. is the poisoning SCR catalyst of anti-alkali and alkaline earth metal ions that the European patent of EP 06019991.6 has provided metal oxide-superpower acidic group, and the regeneration of the poisoning denitrating catalyst of alkali metal is had to certain inspiration meaning.Publication number is the Chinese patent of CN 102266723A, mainly provide a kind of technique that adopts autoclave to carry out catalyst reaming in regenerative process, but the expanding agent using in this technique can cause secondary pollution as methyl alcohol etc., and the release realizing under Elevated Temperature Conditions rapidly exists the hidden danger in safety, and there is the problems such as processing time length in this technique.Improve in a word existing vanadium titanium base honeycomb-shaped SCR denitrating catalyst regeneration technology, exploitation is applicable to the regenerating unit that hoisting transportation is produced, and has important meaning.
Summary of the invention:
The present invention provides the technique of the vanadium titanium base honeycomb-shaped SCR denitrating catalyst regeneration of deactivation, improves the effect of cleaning in cleaning process, accelerates the speed of cleaning.
1) regeneration technology described in the present invention is the technique of the vanadium titanium base honeycomb-shaped SCR denitrating catalyst of deactivation being carried out to the processing such as pressure (hydraulic) water spray, ultrasonic cleaning, secondary pressurized water spray, pickling, forced air drying, active component is supplementary, post-blast is dry, calcining.Described regenerating unit is to place successively the devices such as the first pressure (hydraulic) water spray pond, ultrasonic cleaning pond, the second pressure (hydraulic) water spray pond, pickling tube, the first forced air drying pond, the supplementary pond of active component, the second forced air drying pond, calcining furnace.
2) catalyst honeycomb of regeneration vertically being placed to (upper and lower surface is honeycomb face) packs lifting into and forms regeneration module in support frame.Be provided with rake spray equipment at the first pressure (hydraulic) water spray Chi Zhongshang.Pressurization sand leaching water sprays to regeneration module by this device is top-down.Require the muzzle velocity of shower water at 7～14m/s, according to the pollution level spray 3～10min of catalyst surface.
3) passed through 2) process regeneration module, lifting enter in Ultrasonic Cleaning pond.The cleaning fluid of the honeycomb ceramics top 5～15cm that did not have regeneration module is housed in ultrasonic cleaning pond.The composition of cleaning fluid is solubilizer (one or both of poly-sorbic acid fat or polyoxyethylene fatty acid) mass percent concentration 0～0.7 ‰, HPMA poly mass percentage concentration is 0～0.5 ‰, one or more regeneration module liftings in JFC-2 alcohol ethoxylates mass percent concentration 0～1 ‰ are cleaned, bottom, ultrasonic cleaning pond is provided with support, at the bottom of preventing that regeneration module from touching pond.In the bottom in ultrasonic cleaning pond, multiple ultrasonic transducers are housed.Ultrasonic cleaning supersonic frequency used is 15～32kHz, and the matching relationship of the power of Ultrasonic Power Source and pond, ultrasonic cleaning pond floor space is 10～60kW/m
2.Ultrasonic cleaning pond is provided with heater and discharge outlet at the bottom of pond.Service sink lower sidewall is provided with water inlet, and top is provided with gap.The angle with certain that when work, cleaning fluid continues is cut sth. askew and is injected service sink.Can play stirring and washing liquid, unnecessary cleaning fluid is discharged by top gap.While carrying out ultrasonic cleaning, rinse liquid temperature is controlled at 20～45 DEG C, will increase flow of inlet water or reduce the power of Ultrasonic Power Source when water temperature over-high.
4) passed through 3) regeneration module processed, lifting enters in the second pressure (hydraulic) water spray pond.On in spray pond, be provided with rake spray equipment.Pressurization deionized water sprays to regeneration module by this device is top-down.Require the muzzle velocity of shower water at 3～8m/s, spray 5～10min.By 1), 2), 3) combine composition pressure (hydraulic) water spray-ultrasonic cleaning equipment.
5) passed through 4) process regeneration module, lifting enter pickling tube, in pickling tube, the composition of pickle is: the concentration of sulfuric acid is 7.84g/L～78.4g/L.One or more of another interpolation gallic acid (mass percent concentration is 0～0.2 ‰) and oxalic acid (mass percent concentration is 0～0.4 ‰), the bubble generator that pickling tube bottom has glass sintering sheet to make, can produce tiny bubble, the composition that these bubbles can get off pickling on catalyst is delivered in solution timely, and pickling time is controlled at 10～30min.
6) passed through 5) regeneration module processed, send into the first forced air drying pond, dry pond temperature is made as 80～130 DEG C, and be 10～30min drying time.
7) passed through 6) process regeneration module, lifting enter active component supplement pond.Active component is housed in pond and supplements liquid, composition is: vanadic sulfate molar concentration is 0.05～0.15mol/L, and ammonium metatungstate molar concentration is 0.1～0.2mol/L.The pH value that regulates active supplementary liquid with sulfuric acid, pH value is controlled at 1.5～3.Active component arranges oscillation device at the bottom of supplementing pond pond, and the bubble producing in solution when oscillation device can be by dipping is peeled off the wall of catalyst, is beneficial to active component and supplements the even dipping of liquid on catalyst.
8) passed through 7) regeneration module processed, lifting enters the second forced air drying pond, and the temperature in dry pond is made as 80～120 DEG C, and be 10～30min drying time.
9) passed through 8) to process, the catalyst of regeneration module is sent in calcining furnace, and calcining furnace slowly heats up (5～10 DEG C/min), finally calcines 30～90min the condition of 400～500 DEG C.
The invention has the beneficial effects as follows:
Vanadium titanium base honeycomb-shaped SCR denitrating catalyst regeneration technology of the present invention and device, can realize the highly efficient regeneration of deactivation vanadium titanium base honeycombed catalyst.In this technique, can effectively maintain the structural strength of catalyst compared with general regeneration technology, improve surface appearance and the pore structure of catalyst, effectively reduce the SO of catalyst
2oxidation inversion frequency.Device is simple, and the regeneration that is applicable to hoisting transportation is produced, and efficiency is high.The popularization of this technique, can improve the performance of regeneration vanadium titanium base honeycomb-shaped SCR catalyst, saves catalyst displacement cost, to controlling NO
xsignificant.
Brief description of the drawings:
Fig. 1 is vanadium titanium base honeycomb-shaped SCR denitrating catalyst regeneration technology flow chart of the present invention.
Fig. 2 is vanadium titanium base honeycomb-shaped SCR denitrating catalyst regenerating unit sketch of the present invention.
Fig. 3 is ultrasonic cleaning pool structure schematic diagram in vanadium titanium base honeycomb-shaped SCR denitrating catalyst regenerating unit of the present invention.
Mark in figure: the regeneration module that 1-lifting frame and catalyst to be regenerated form, 2-the first pressure (hydraulic) water service sink, 3-ultrasonic cleaning pond, 4-the second pressure (hydraulic) water service sink, 5-pickling tube, the dry pond of 6-first, 7-active component supplements pond, the dry pond of 8-second, 9-calcining furnace, 11-vanadium titanium base honeycombed catalyst module, 12-lifting frame, the driving of 13-regeneration production line, 21-pressure (hydraulic) water nozzle, 22-rake spraying pressurized water shower device driving mechanism, 23-rake spraying pressurized water shower device, 24 pressure (hydraulic) water pipelines, 31 ultrasonic cleaning pond water inlets, 32 ultrasonic generating mechanisms, 33 cleaning fluid heaters, 34 ultrasonic cleaning liquid, 35 transducers, 36 ultrasonic cleaning pond discharge outlet, 37 ultrasonic cleaning pond lower supporters, 38 ultrasonic cleaning pond gaps, 39 Ultrasonic Power Sources, 51 sintered glass sheet bubble generators, 52 admission lines, 53 bubble generation systems blower fans, 61 dry pond air blasts, 62 openable dry pond top covers, 63 heater strips, 71 active components supplement pond water inlet, 72 heaters, 73 oscillation devices, 74 discharge outlet, 81 dry pond air blasts, 82 openable dry pond top covers, 83 heater strips.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is described in detail.
It is the concrete implementation step of vanadium titanium base honeycombed catalyst regeneration technology with reference to figure 1.
With reference to figure 2, vanadium titanium base honeycomb-shaped SCR denitrating catalyst 11, is contained in lifting frame 12, composition lifting regeneration module 1.Driving 13 can be carried out hoisting transportation by regeneration module in regenerative process.On the top in pressure (hydraulic) water spray pond 2, the spray equipment 23 being driven by driving mechanism 22 is installed.Nozzle 21 by this device can spray sand leaching water on regeneration module.Cleaning fluid 34 is housed in ultrasonic cleaning pond 3.The second pressure (hydraulic) water spray pond 4 is identical with the structure in the first pressure (hydraulic) water spray pond 2.In pickling tube 5 bottoms, pond, the bubble generator 51 that glass sintering sheet is made is housed, and corresponding air supply system 52,53.Bubble can accelerate the material that pickling is got off from catalyst and enter in pickle, strengthens pickling effect.Pickling can cause that the compound of catalyst poisoning washes off by part, also can wash the vanadium of part off, thereby reduces SO
2oxidation frequency.In pickling tube, part sulfate radical also can load on catalyst.The first 6 tops, forced air drying pond covers 62, in dry pond, heater strip 63 is housed, and carries out air blast by Blast mechanism 61.Active component supplements pond 7 and is provided with temperature control system 72.Active component supplements liquid and can be filled with in supplementary pond by supplementing the water inlet 71 on top, pond.At the bottom of pond, be provided with oscillation device 73, oscillation device can make active component supplement liquid vibration, thus the bubble disengagement wall producing on catalyst wall while accelerating dipping, the uniformity of raising dipping.The structure in the second forced air drying pond 8 is identical with the first forced air drying pool structure.In calcining furnace 9, catalyst is carried out to calcination processing, the catalyst that calcining can regeneration induction produces denitration activity, improves the microporous structure of catalyst, can add the structural strength of powerful catalyst simultaneously.
Ultrasonic cleaning pond 3 structural representations that are with reference to figure 3, what when work, ultrasonic cleaning liquid 34 continued by water inlet 31 injects in service sink.Cleaning fluid and the floating dirt of part excessive in pond overflow by overfall 38.Discharge outlet 36 is arranged at service sink bottom.Service sink is provided with temperature control equipment 33.At the bottom of ultrasonic transducer 35 is installed in pond, Ultrasonic Power Source 39 provides energy to transducer.Bottom, ultrasonic cleaning pond is provided with support 37, at the bottom of preventing that regeneration module from encountering pond.
The course of work of the present invention is as follows:
The vanadium titanium base honeycomb-shaped SCR denitrating catalyst 12 of deactivation, has regeneration necessary through qualification, packs in lifting frame 11 composition regeneration module 1 into.Enter the first pressure (hydraulic) water spray pond 2 by 13 liftings of driving a vehicle, after spraying, lifting enters carries out ultrasonic cleaning in ultrasonic cleaning pond 3, ultrasonic cleaning lifting later enters in the second pressure (hydraulic) water spray pond 4 and spray cleaning, then lifts to enter pickling tube 5 and carry out pickling.After pickling is complete, send into the first forced air drying pond 6 inner dryings.Be dried rear lifting and entered active component and supplement pond 7 and carry out active component load, then sent into the second dry pond 8, carried out forced air drying.After dry, send in calcining furnace 9 and calcine, active component decomposes, and vanadium titanium base honeycomb-shaped SCR denitrating catalyst recovers denitration activity, and regenerative process completes.
Below embodiment of the present invention is described, but embodiment is below some concrete examples, the scope of the invention is not limited to following embodiment.
Embodiment 1
Adopt certain factory's deactivation vanadium-titanium-tungsten type cellular
denitrating catalyst, the principal component of catalyst is vanadium, titanium, tungsten, catalyst sectional dimension is 150mm × 150mm, cuts of 40mm × 40mm × 40mm, first with pressurization sand leaching water spray 10min.Then be placed in water bath with thermostatic control ultrasonic cleaning machine, at the cleaning frequency of 32kHz, 10kW/m
2the sound intensity, under 40 DEG C of conditions, clean 8min.The composition of cleaning fluid is HPMA (mass percentage concentration is 0.5 ‰).After ultrasonic cleaning, spray 5min by deionized water.Put into subsequently the sulfuric acid that contains 10g/L and the solution of 0.4 ‰ oxalic acid and carry out pickling, acid dip pickle bottom blasts bubble.Then put into air dry oven and be dried 20min.Dried catalyst is put into the vanadic sulfate that contains 0.1mol/L and the ammonium metatungstate solution of 0.15mol/L, and solution pH value is adjusted to 1.5 with sulfuric acid, stirs solution, floods.Catalyst after dipping is put into air dry oven and is dried 20min, puts into Muffle furnace and is warmed up to gradually 420 DEG C and maintains 90min, and catalyst regeneration is complete.Get partial regeneration sample and grind to form 60～100 object particles.
Active testing:
In quartz ampoule fixed bed column plug flow reactor, carry out performance test, reacting gas adopts the method for gas cylinder distribution, gas flow 1000mL/min, and air speed is 3 × 10
5h
-1, NO and NH
3be all 800ppm, O
2volume fraction 3%, N
2for Balance Air, adopt GASMET FTIR DX4000 flue gas analyzer to detect online nitrous oxides concentration, probe temperature is 375 DEG C.The conversion ratio X of test NO, test result is: regenerated catalyst X/ fresh catalyst X=0.89, regenerated catalyst X/ deactivation catalyst X=1.41.
Strength test:
Regenerated catalyst and fresh catalyst are carried out respectively to strength test on universal strength tester, do not find that the former has the phenomenon of obvious remitted its fury.
SO
2oxidation conversion frequency test:
In quartzy tubing string fixed bed plug flow reactor, carry out reaction test, SO
2gas flow 150NmL/min, air speed is 3 × 10
5h
-1, O
2volume fraction 3%, He is Balance Air, probe temperature is 375 DEG C.To reflect implication sample temperature and maintain 200 DEG C and be expelled to above in gas-chromatography, thermal conductivity detector (TCD) is housed chromatogram and sulfur chemiluminescence detection device detects.Record regenerated catalyst and fresh catalyst by SO
2be oxidized to SO
3ratio be all less than 1%.
Embodiment 2
Catalyst from embodiment 1 cuts of 40mm × 40mm × 40mm, first with pressurization sand leaching water spray 10min.Then be placed in water bath with thermostatic control ultrasonic cleaning machine, at the cleaning frequency of 20kHz, 20kW/m
2the sound intensity, under 35 DEG C of conditions, clean 10min.The composition of cleaning fluid is HPMA (mass percentage concentration is 0.5 ‰).After ultrasonic cleaning, spray 5min by deionized water.Put into subsequently the sulfuric acid that contains 50g/L and the solution of 0.4 ‰ oxalic acid and carry out pickling, acid dip pickle bottom blasts bubble.Then put into air dry oven and be dried 20min.Dried catalyst is put into the vanadic sulfate that contains 0.15mol/L and the ammonium metatungstate solution of 0.2mol/L, and solution pH value is adjusted to 2 with sulfuric acid, stirs solution, floods.Catalyst after dipping is put into air dry oven and is dried 20min, puts into Muffle furnace and is warmed up to gradually 450 DEG C and maintains 60min, and catalyst regeneration is complete.Partial regeneration sample is ground to form to 60～100 object particles for subsequent use.
Active testing:
In quartz ampoule plug flow reactor, carry out the performance test of powder, reacting gas adopts the method for gas cylinder distribution, gas flow 1000mL/min, and air speed is 3 × 10
5h
-1, NO and NH
3concentration is all 800ppm, O
2volume fraction 3%, N
2for Balance Air, adopt GASMET FTIR DX4000 flue gas analyzer to detect online outlet nitrous oxides concentration.
The conversion of nitrogen oxides efficiency of three kinds of catalyst of table 1
| NO conversion ratio X | Fresh catalyst | Regenerated catalyst | Deactivation catalyst |
| 320℃ | 91％ | 84％ | 44％ |
| 375℃ | 97％ | 92％ | 51％ |
| 400℃ | 96％ | 88％ | 54％ |
| 420℃ | 94％ | 91％ | 56％ |
Embodiment 3
Denitrating catalyst from embodiment 1 cuts of 40mm × 40mm × 40mm, first with pressurization sand leaching water spray 5min.Then be placed in water bath with thermostatic control ultrasonic cleaning machine, at the cleaning frequency of 18kHz, 20kW/m
2the sound intensity, under 40 DEG C of conditions, clean 10min.Cleaning fluid composition is HPMA (mass percentage concentration is 0.5 ‰).Clean and sprayed 5min by deionized water afterwards.Put into subsequently the sulfuric acid that contains 25g/L and the solution of 0.2 ‰ gallic acids and carry out pickling, acid dip pickle bottom blasts bubble.Then put into the dry 20min of air dry oven.Dried catalyst is put into the vanadic sulfate that contains 0.15mol/L and the ammonium metatungstate solution of 0.2mol/L, and solution pH value is adjusted to 2.5 with sulfuric acid, stirs solution, floods.Catalyst after dipping is put into air dry oven and is dried 20min, puts into Muffle furnace and is warmed up to gradually 450 DEG C, maintains 90min, and catalyst regeneration is complete.
Active testing:
In integral honeycomb shape hydrogen-catalyst reactor, carry out denitration performance test.The cross section of reaction vessel is 40mm × 40mm, and reacting gas adopts the method for gas cylinder distribution.Gas flow 3840mL/min, air speed is 4.8 × 10
3h
-1, NO and NH
3concentration is all 800ppm, O
2volume fraction 3%, N
2for Balance Air, adopt GASMET FTIR DX4000 flue gas analyzer to detect the nitrous oxides concentration of outlet.Probe temperature is 375 DEG C.Test result: the transformation efficiency of the oxides of nitrogen of fresh catalyst is 84%, the conversion ratio of regenerated catalyst is 79%.
Claims (7)
1. vanadium titanium base honeycomb-shaped SCR denitrating catalyst regeneration technology, is characterized in that, is made up of the following step: the catalyst honeycomb of regeneration is vertically placed to make its upper and lower surface be that honeycomb face packs in lifting support frame and forms regeneration module; To this regeneration module, pressure (hydraulic) water spray, ultrasonic cleaning, secondary pressurized water spray, pickling, forced air drying, active component supplement immersion stain in order, post-blast is dried, calcines;
Water for pressure (hydraulic) water spray is sand leaching water;
Composition for the cleaning fluid of ultrasonic cleaning is: the solubilizer of mass percent concentration 0～0.7 ‰, mass percentage concentration are one or more of JFC-2 alcohol ethoxylates of 0～0.5 ‰ HPMA poly, mass percent concentration 0～1 ‰, and wherein the mass percent concentration of each composition is not got 0 value; Solubilizer is a kind of of polysorbate or polyoxyethylene fatty acid or two kinds; When cleaning, cleaning fluid maintains 20～45 DEG C;
The composition that is used for the pickle of pickling is: sulfuric acid concentration 7.84g/L～10g/L; The another mass percent concentration that adds is that 0～0.2 ‰ gallic acid and mass percent concentration are one or more of 0～0.4 ‰ oxalic acid, and wherein the mass percent concentration of each composition is not got 0 value;
Active component supplements liquid: vanadic sulfate molar fraction 0.05～0.15mol/L, ammonium metatungstate concentration 0.1～0.15mol/L; The pH value that regulates active supplementary liquid with sulfuric acid, pH value is controlled at 1.5～3.
2. vanadium titanium base honeycomb-shaped SCR denitrating catalyst regeneration technology according to claim 1, is characterized in that slowly 5～10 DEG C/min of intensification of calcining furnace, calcines, and finally under the condition of 400～500 DEG C, keeps 30～90min.
3. for realizing the device of the vanadium titanium base honeycomb-shaped SCR denitrating catalyst regeneration technology as described in claim 1 to 2 any one, it is characterized in that: this device comprises that the pressure (hydraulic) water spray pond, ultrasonic cleaning pond, secondary pressurized water spray pond, pickling tube, forced air drying pond, the active component that set gradually supplement pond, the dry pond of post-blast, calcining furnace; Pressure (hydraulic) water spray, ultrasonic cleaning, secondary pressurized water spray combines composition pressure (hydraulic) water spray-ultrasonic cleaning equipment.
4. the device as described in right 3, is characterized in that: ultrasonic cleaning supersonic frequency used is 15～32kHz, and the matching relationship of the power of Ultrasonic Power Source and pond, ultrasonic cleaning pond floor space is 10～60kW/m
2.
5. the device as described in right 3, it is characterized in that: bottom, ultrasonic cleaning pond is provided with support, multiple ultrasonic transducers are installed in the bottom in ultrasonic cleaning pond, and ultrasonic cleaning pond is provided with heater, water inlet, discharge outlet at the bottom of pond, and service sink side wall upper part is provided with gap.
6. the device as described in right 3, is characterized in that: the bubble generator that pickling tube bottom has glass sintering sheet to make.
7. the device as described in right 3, is characterized in that: active component supplements bottom, pond oscillation device.
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| CN105665037A (en) * | 2016-02-23 | 2016-06-15 | 洛阳万山高新技术应用工程有限公司 | Regenerative activation treatment method for inactivated SCR denitrated catalyst |
| CN105797790A (en) * | 2016-04-08 | 2016-07-27 | 天河（保定）环境工程有限公司 | Acid pickling solution and method for recycling waste denitration catalysts |
| CN106902895A (en) * | 2017-03-21 | 2017-06-30 | 黑龙江丰迪环保科技有限公司 | Failure denitrating catalyst regeneration method |
| JP2021079341A (en) * | 2019-11-20 | 2021-05-27 | 三菱パワー株式会社 | Catalyst cleaning method, catalyst cleaning apparatus and program |
| CN112958165B (en) * | 2021-02-26 | 2023-06-20 | 无锡迅德环保工程有限公司 | Process flow of SCR denitration catalyst regeneration production line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543794A (en) * | 2009-04-29 | 2009-09-30 | 常州市肯创环境工程技术有限公司 | Device for cleaning and regenerating catalyst |
| CN102059156A (en) * | 2010-12-21 | 2011-05-18 | 重庆远达催化剂制造有限公司 | Denitration catalyst regenerating solution and regenerating method thereof |
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2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101543794A (en) * | 2009-04-29 | 2009-09-30 | 常州市肯创环境工程技术有限公司 | Device for cleaning and regenerating catalyst |
| CN102059156A (en) * | 2010-12-21 | 2011-05-18 | 重庆远达催化剂制造有限公司 | Denitration catalyst regenerating solution and regenerating method thereof |
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