CN103878035B - The regenerated liquid of a kind of vanadium, titanium based selective catalytic-reduction denitrified catalyst - Google Patents
The regenerated liquid of a kind of vanadium, titanium based selective catalytic-reduction denitrified catalyst Download PDFInfo
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- CN103878035B CN103878035B CN201410128342.1A CN201410128342A CN103878035B CN 103878035 B CN103878035 B CN 103878035B CN 201410128342 A CN201410128342 A CN 201410128342A CN 103878035 B CN103878035 B CN 103878035B
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- 239000003054 catalyst Substances 0.000 title claims abstract description 60
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 18
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 18
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 17
- 239000010936 titanium Substances 0.000 title claims abstract description 17
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 17
- 238000010531 catalytic reduction reaction Methods 0.000 title claims abstract description 11
- 238000004140 cleaning Methods 0.000 claims abstract description 36
- 239000008367 deionised water Substances 0.000 claims abstract description 32
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 27
- 239000013589 supplement Substances 0.000 claims abstract description 27
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims abstract description 14
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims abstract description 13
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002253 acid Substances 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 239000004094 surface-active agent Substances 0.000 claims abstract description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 27
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- 239000003513 alkali Substances 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 235000006408 oxalic acid Nutrition 0.000 claims description 9
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 6
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 claims description 4
- 229940120146 EDTMP Drugs 0.000 claims description 4
- NFDRPXJGHKJRLJ-UHFFFAOYSA-N edtmp Chemical compound OP(O)(=O)CN(CP(O)(O)=O)CCN(CP(O)(O)=O)CP(O)(O)=O NFDRPXJGHKJRLJ-UHFFFAOYSA-N 0.000 claims description 4
- MSXHSNHNTORCAW-GGLLEASOSA-M sodium;(2s,3s,4s,5r,6s)-3,4,5,6-tetrahydroxyoxane-2-carboxylate Chemical compound [Na+].O[C@H]1O[C@H](C([O-])=O)[C@@H](O)[C@H](O)[C@H]1O MSXHSNHNTORCAW-GGLLEASOSA-M 0.000 claims description 4
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 claims description 2
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 2
- 239000000174 gluconic acid Substances 0.000 claims description 2
- 235000012208 gluconic acid Nutrition 0.000 claims description 2
- 239000001103 potassium chloride Substances 0.000 claims description 2
- 235000011164 potassium chloride Nutrition 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 12
- 230000008929 regeneration Effects 0.000 abstract description 12
- 238000011069 regeneration method Methods 0.000 abstract description 12
- 239000000126 substance Substances 0.000 abstract description 2
- 230000002411 adverse Effects 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 230000002779 inactivation Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000002585 base Substances 0.000 description 8
- 239000000428 dust Substances 0.000 description 7
- 238000007664 blowing Methods 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 238000010926 purge Methods 0.000 description 6
- 230000008439 repair process Effects 0.000 description 6
- 238000013517 stratification Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000536 complexating effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 1
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical class [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910001413 alkali metal ion Inorganic materials 0.000 description 1
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 229910001420 alkaline earth metal ion Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- CEYULKASIQJZGP-UHFFFAOYSA-L disodium;2-(carboxymethyl)-2-hydroxybutanedioate Chemical compound [Na+].[Na+].[O-]C(=O)CC(O)(C(=O)O)CC([O-])=O CEYULKASIQJZGP-UHFFFAOYSA-L 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The present invention discloses the regenerated liquid of a kind of vanadium, titanium based selective catalytic-reduction denitrified catalyst, comprise cleaning fluid and active supplement solution, described cleaning fluid is made up of basic organic salts, surfactant and deionized water, and described active supplement solution is made up of weak acid, ammonium metavanadate, ammonium tungstate, cerous nitrate and deionized water.Cleaning fluid component in denitrating catalyst regenerated liquid of the present invention can get rid of the adverse effect of harmful substance to SCR denitration, recovers its pore passage structure; Active supplement solution component can improve denitrating catalyst activity, increases heat endurance and the service life of catalyst; The denitration rate of the catalyst after regeneration can reach 82 ~ 90%, SO
2/ SO
3conversion ratio is less than 1%, and service life is more than 85% of fresh catalyst.
Description
Technical field
The present invention relates to denitrifying catalyst with selective catalytic reduction field, be specifically related to the regenerated liquid of a kind of vanadium of inactivation, titanium based selective catalytic-reduction denitrified catalyst.
Background technology
Along with country is more and more stricter to the control of discharged nitrous oxides, SCR (SCR) gas denitrifying technology is efficiently widely used in the denitrating system of thermal power plant because of it with reliable denitration performance.The technological core of SCR flue-gas denitration process is vanadium, Ti-base catalyst, there is the problem of activity decrease in running.The reason of catalysqt deactivation is caused to have a lot, the impact of existing operating condition, dust in such as flue gas and temperature fluctuation can cause damage to catalyst macrostructure, also to have in flue gas various poisonous and harmful chemical composition to the toxic action of catalyst surface reaction active site, wherein the toxic action that has of arsenic element, alkali metal, alkaline-earth metal and metal oxide is the most obvious.
Catalyst regeneration has great economic benefit and social environment benefit.Denitrating catalyst is the important component part of coal-burning power plant's SCR denitration system, and cost is higher, and decaying catalyst regeneration expense is only 30 ~ 50% of raw catelyst.If do not regenerated, need inject capital into and carry out useless process of endangering, and will the serious waste of resource be caused and bring the secondary pollution of environment.Can predict thus, the SCR denitration regeneration of inactivation is inexorable trend.
The domestic research to denitrating catalyst regeneration to have had many.Refer to the mode that alkali cleaning and active liquid supplement in the Chinese invention patent application of publication number CN102974366, but its alkali cleaning utilizes ammoniacal liquor to carry out, act on more single, treatment effeciency is lower, easy contaminated environment; Its active supplementary form taking to apply, is difficult to play lasting effect in denitrating flue gas process.The Chinese invention patent application of publication number CN102764675 also using weak acid and surfactant regenerates decaying catalyst, this regenerated liquid for arsenic and phosphorus isogonic acidic materials fouled catalyst treatment effect not good; The EDTA added can produce complexing to alkali and alkaline earth metal ions, but its dispersiveness is poor, and needing to add certain dispersant could use.In a word, the problems referred to above illustrate that the performance of the regenerated liquid of existing vanadium, titanium base SCR denitration has much room for improvement, more thoroughly to remove the total material causing inactivation, and retentive activity component and intensity simultaneously, be applicable to large-scale industrial production, and can prevent from causing environmental pollution.
Summary of the invention
The object of the invention is to for the problems referred to above, the regenerated liquid of a kind of vanadium, titanium based selective catalytic-reduction denitrified catalyst is provided.
For achieving the above object, the technical solution adopted in the present invention is:
The regenerated liquid of a kind of vanadium, titanium based selective catalytic-reduction denitrified catalyst, comprise cleaning fluid and active supplement solution, described cleaning fluid is made up of basic organic salts, surfactant and deionized water, and described active supplement solution is made up of weak acid, ammonium metavanadate, ammonium tungstate, cerous nitrate and deionized water.
Wherein, the basic organic salts in described cleaning fluid is the sodium salt of gluconic acid, citric acid or ethylene diamine tetra methylene phosphonic acid (EDTMPA) or one or more of sylvite, and content is 0.5 ~ 5wt%; Surfactant is one or more of alkali-resistant penetrant AEP98, alkali-resistant penetrant OEP-70 or micropore permeation agent JFC, and content is 0.1 ~ 1wt%; All the other content in described cleaning fluid are deionized water.
Wherein, the weak acid in described active supplement solution is one or more of oxalic acid, acetic acid or citric acid, and content is 0.5 ~ 4wt%; Ammonium metavanadate content is 0.5 ~ 5wt%, and ammonium tungstate content is 2 ~ 6wt%, and cerous nitrate content is 0.05 ~ 1wt%; All the other content in described active supplement solution are deionized water.
Further, preferred described cleaning fluid is made up of following component: 1 ~ 3wt% gluconic acid sodium salt, 0.2 ~ 0.4wt% micropore permeation agent JFC, 96.6 ~ 98.8wt% deionized water;
Further, preferred described active supplement solution is made up of following component: 1 ~ 3wt% oxalic acid, 2 ~ 4wt% ammonium metavanadate, 3 ~ 5wt% ammonium tungstate, 0.2 ~ 0.4wt% cerous nitrate, 87.6 ~ 93.8wt% deionized water.
Beneficial effect:
The beneficial effect of the regenerated liquid of vanadium of the present invention, titanium based selective catalytic-reduction denitrified catalyst is:
(1) cleaning fluid main component of the present invention is basic organic salts, itself has very strong complexing power, dissolubility, soil release performance, especially for alkaline-earth metal and molysite fouled catalyst treatment effect clearly; Its alkalescence is more weak, can keep intensity and the active component of regenerated catalyst to greatest extent; With the addition of bleeding agent in cleaning fluid, improve the efficiency of cleaning;
(2) weakly acidic active supplement solution can be supplemented impaired active component and active sites, improves denitration rate; The cerous nitrate wherein added can increase heat endurance and the service life of regenerated catalyst;
(3) the denitration rate of passing through the catalyst of regeneration can reach 82 ~ 90%, SO2/SO3 conversion ratio and be less than 1%, and service life is more than 85% of fresh catalyst, all meets engineering design requirements.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is elaborated, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Embodiment 1
(1) regenerated liquid preparation
Cleaning fluid: 2wt% gluconic acid sodium salt, 0.3wt% micropore permeation agent JFC, surplus is deionized water;
Active supplement solution: 0.8wt% oxalic acid, 1wt% ammonium metavanadate, 3wt% ammonium tungstate, 0.3wt% cerous nitrate, surplus is deionized water.
(2) technological process
Institute's sample thief is vanadium, the titanium base SCR denitration that certain power plant has run 20000 hours, finds that denitration rate is 56%, SO after testing
2/ SO
3conversion ratio be 0.78%.First, utilize dried compressed air to purge 10min to the denitrating catalyst of inactivation, to remove the dust stratification on surface; Secondly, insert ultrasonic wave added cleaning 45min in cleaning fluid by blowing the catalyst that ash is disposed, after put into deionized water rinsed clean; Then, by catalyst soakage 3h in active supplement solution; Finally, the hot-air of 120 DEG C is utilized to carry out dry 2h to catalyst.Regenerative process terminates.
Catalyst after regeneration is tested through denitration activity, and denitration rate returns to 90%, SO by 56%
2/ SO
3conversion ratio be 0.82%.
Embodiment 2
(1) regenerated liquid preparation
Cleaning fluid: 1wt% gluconic acid sodium salt, 0.3wt% micropore permeation agent JFC, surplus is deionized water;
Active supplement solution: 0.8wt% oxalic acid, 1wt% ammonium metavanadate, 3wt% ammonium tungstate, 0.3wt% cerous nitrate, surplus is deionized water.
(2) technological process
Institute's sample thief is vanadium, the titanium base SCR denitration that certain power plant has run 20000 hours, finds that denitration rate is 56%, SO after testing
2/ SO
3conversion ratio be 0.78%.First, utilize dried compressed air to purge 10min to the denitrating catalyst of inactivation, to remove the dust stratification on surface; Secondly, insert ultrasonic wave added cleaning 45min in cleaning fluid by blowing the catalyst that ash is disposed, after put into deionized water rinsed clean; Then, by catalyst soakage 3h in active supplement solution; Finally, the hot-air of 120 DEG C is utilized to carry out dry 2h to catalyst.Regenerative process terminates.
Catalyst after regeneration is tested through denitration activity, and denitration rate returns to 83%, SO by 56%
2/ SO
3conversion ratio be 0.78%.
Embodiment 3
(1) regenerated liquid preparation
Cleaning fluid: 4wt% K-IAO, 0.3wt% micropore permeation agent JFC, surplus is deionized water;
Active supplement solution: 0.8wt% oxalic acid, 1wt% ammonium metavanadate, 3wt% ammonium tungstate, 0.3wt% cerous nitrate, surplus is deionized water.
(2) technological process
Institute's sample thief is vanadium, the titanium base SCR denitration that certain power plant has run 20000 hours, finds that denitration rate is 56%, SO after testing
2/ SO
3conversion ratio be 0.78%.First, utilize dried compressed air to purge 10min to the denitrating catalyst of inactivation, to remove the dust stratification on surface; Secondly, insert ultrasonic wave added cleaning 45min in cleaning fluid by blowing the catalyst that ash is disposed, after put into deionized water rinsed clean; Then, by catalyst soakage 3h in active supplement solution; Finally, the hot-air of 120 DEG C is utilized to carry out dry 2h to catalyst.Regenerative process terminates.
Catalyst after regeneration is tested through denitration activity, and denitration rate is 0.85% by the conversion ratio that 56% returns to 90%, SO2/SO3.
Embodiment 4
(1) regenerated liquid preparation
Cleaning fluid: 2wt% K-IAO, 0.3wt% alkali-resistant penetrant OEP-70, surplus is deionized water;
Active supplement solution: 0.8wt% oxalic acid, 1wt% ammonium metavanadate, 3wt% ammonium tungstate, 0.3wt% cerous nitrate, surplus is deionized water.
(2) technological process
Institute's sample thief is vanadium, the titanium base SCR denitration that certain power plant has run 20000 hours, finds that denitration rate is 56%, SO after testing
2/ SO
3conversion ratio be 0.78%.First, utilize dried compressed air to purge 10min to the denitrating catalyst of inactivation, to remove the dust stratification on surface; Secondly, insert ultrasonic wave added cleaning 45min in cleaning fluid by blowing the catalyst that ash is disposed, after put into deionized water rinsed clean; Then, by catalyst soakage 3h in active supplement solution; Finally, the hot-air of 120 DEG C is utilized to carry out dry 2h to catalyst.Regenerative process terminates.
Catalyst after regeneration is tested through denitration activity, and nitre rate is 0.81% by the conversion ratio that 56% returns to 87%, SO2/SO3.
Embodiment 5
(1) regenerated liquid preparation
Cleaning fluid: 2wt% natrium citricum, 0.3wt% micropore permeation agent JFC, surplus is deionized water;
Active supplement solution: 0.8wt% oxalic acid, 1wt% ammonium metavanadate, 3wt% ammonium tungstate, 0.3wt% cerous nitrate, surplus is deionized water.
(2) technological process
Institute's sample thief is vanadium, the titanium base SCR denitration that certain power plant has run 20000 hours, finds that denitration rate is 56%, SO after testing
2/ SO
3conversion ratio be 0.78%.First, utilize dried compressed air to purge 10min to the denitrating catalyst of inactivation, to remove the dust stratification on surface; Secondly, insert ultrasonic wave added cleaning 45min in cleaning fluid by blowing the catalyst that ash is disposed, after put into deionized water rinsed clean; Then, by catalyst soakage 3h in active supplement solution; Finally, the hot-air of 120 DEG C is utilized to carry out dry 2h to catalyst.Regenerative process terminates.
Catalyst after regeneration is tested through denitration activity, and denitration rate returns to 85%, SO by 56%
2/ SO
3conversion ratio be 0.86%.
Embodiment 6
(1) regenerated liquid preparation
Cleaning fluid: 2wt% ethylene diamine tetra methylene phosphonic acid sodium, 0.5wt% alkali-resistant penetrant AEP98, surplus is deionized water;
Active supplement solution: 0.8wt% citric acid, 1wt% ammonium metavanadate, 3wt% ammonium tungstate, 0.3wt% cerous nitrate, surplus is deionized water.
(2) technological process
Institute's sample thief is vanadium, the titanium base SCR denitration that certain power plant has run 20000 hours, finds that denitration rate is 56%, SO after testing
2/ SO
3conversion ratio be 0.78%.First, utilize dried compressed air to purge 10min to the denitrating catalyst of inactivation, to remove the dust stratification on surface; Secondly, insert ultrasonic wave added cleaning 45min in cleaning fluid by blowing the catalyst that ash is disposed, after put into deionized water rinsed clean; Then, by catalyst soakage 3h in active supplement solution; Finally, the hot-air of 120 DEG C is utilized to carry out dry 2h to catalyst.Regenerative process terminates.
Catalyst after regeneration is tested through denitration activity, and denitration rate returns to 82%, SO by 56%
2/ SO
3conversion ratio be 0.83%.
Last it is noted that obviously, above-described embodiment is only for example of the present invention is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (3)
1. the regenerated liquid of a vanadium, titanium based selective catalytic-reduction denitrified catalyst, it is characterized in that: described regenerated liquid comprises cleaning fluid and active supplement solution, described cleaning fluid is made up of basic organic salts, surfactant and deionized water, and described active supplement solution is made up of weak acid, ammonium metavanadate, ammonium tungstate, cerous nitrate and deionized water; Basic organic salts in described cleaning fluid is the sodium salt of gluconic acid, citric acid or ethylene diamine tetra methylene phosphonic acid or one or more of sylvite, and content is 0.5 ~ 5wt%; Surfactant is one or more of alkali-resistant penetrant AEP98, alkali-resistant penetrant OEP-70 or micropore permeation agent JFC, and content is 0.1 ~ 1wt%; All the other content in described cleaning fluid are deionized water; Weak acid in described active supplement solution is one or more of oxalic acid, acetic acid or citric acid, and content is 0.5 ~ 4wt%; Ammonium metavanadate content is 0.5 ~ 5wt%, and ammonium tungstate content is 2 ~ 6wt%, and cerous nitrate content is 0.05 ~ 1wt%; All the other content in described active supplement solution are deionized water.
2. the regenerated liquid of the vanadium according to claims 1, titanium based selective catalytic-reduction denitrified catalyst, is characterized in that: described cleaning fluid is made up of following component: 1 ~ 3wt% gluconic acid sodium salt, 0.2 ~ 0.4wt% micropore permeation agent JFC, 96.6 ~ 98.8wt% deionized water.
3. the regenerated liquid of the vanadium according to claims 1, titanium based selective catalytic-reduction denitrified catalyst, is characterized in that: described active supplement solution is made up of following component: 1 ~ 3wt% oxalic acid, 2 ~ 4wt% ammonium metavanadate, 3 ~ 5wt% ammonium tungstate, 0.2 ~ 0.4wt% cerous nitrate, 87.6 ~ 93.8wt% deionized water.
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| CN105413760B (en) * | 2014-09-12 | 2018-04-13 | 神华集团有限责任公司 | The method for activation recovering of the composition of cleaning solution and its SCR catalyst of application and failure |
| CN104549568A (en) * | 2014-12-19 | 2015-04-29 | 河南合众电力技术有限公司 | Method for washing SCR denitration catalyst of coal-fired boiler of thermal power plant |
| CN104549572A (en) * | 2014-12-30 | 2015-04-29 | 安徽省元琛环保科技有限公司 | Impregnation solution for regeneration of SCR (selective catalytic reduction) denitrification catalyst and preparation method of impregnation solution |
| CN104826669B (en) * | 2015-04-26 | 2017-05-17 | 重庆大学 | Alkali washing liquid for regenerating SCR denitration catalysts and application thereof |
| CN104815674A (en) * | 2015-05-07 | 2015-08-05 | 中国华能集团清洁能源技术研究院有限公司 | Inactivated vanadium-titanium-based honeycomb-like denitration catalyst combined denitration-demercuration modifying regeneration liquid and preparation method thereof |
| CN105289758A (en) * | 2015-10-20 | 2016-02-03 | 清华大学 | Efficient chelating regeneration method for calcium-poisoned denitration catalyst |
| CN105618162B (en) * | 2016-01-04 | 2018-11-06 | 大唐国际化工技术研究院有限公司 | A kind of recycling method of discarded vanadium tungsten titanium-based denitrating catalyst |
| CN107159318A (en) * | 2017-05-24 | 2017-09-15 | 清华大学 | A kind of neutral complexing cleaning liquid and renovation process for calcium intoxication denitrating catalyst |
| CN112371109A (en) * | 2020-11-26 | 2021-02-19 | 西安建筑科技大学 | Preparation method of aged vanadium-based catalyst and rare earth regenerated denitration catalyst |
| CN114471745A (en) * | 2022-04-06 | 2022-05-13 | 山东万达环保科技有限公司 | Regeneration method of SCR denitration catalyst and application of SCR denitration catalyst in denitration |
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| CN102658215A (en) * | 2012-04-09 | 2012-09-12 | 南京工业大学 | SCR flue gas denitration catalyst regeneration method |
| CN102814201A (en) * | 2012-07-18 | 2012-12-12 | 西安交通大学 | Cleaning and regeneration method for SCR denitration catalyst poisoned by arsenic component in flue |
| CN102974404A (en) * | 2012-11-22 | 2013-03-20 | 中节能六合天融环保科技有限公司 | Denitrification catalyst regeneration method |
| CN103143401A (en) * | 2011-12-07 | 2013-06-12 | 徐树元 | Flue gas denitrification catalyst on-line regeneration activator liquid and preparation method thereof |
| CN103143402A (en) * | 2011-12-07 | 2013-06-12 | 徐树元 | Flue gas denitrification catalyst on-line regeneration cleaning liquid and preparation method thereof |
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| CN103143401A (en) * | 2011-12-07 | 2013-06-12 | 徐树元 | Flue gas denitrification catalyst on-line regeneration activator liquid and preparation method thereof |
| CN103143402A (en) * | 2011-12-07 | 2013-06-12 | 徐树元 | Flue gas denitrification catalyst on-line regeneration cleaning liquid and preparation method thereof |
| CN102658215A (en) * | 2012-04-09 | 2012-09-12 | 南京工业大学 | SCR flue gas denitration catalyst regeneration method |
| CN102814201A (en) * | 2012-07-18 | 2012-12-12 | 西安交通大学 | Cleaning and regeneration method for SCR denitration catalyst poisoned by arsenic component in flue |
| CN102974404A (en) * | 2012-11-22 | 2013-03-20 | 中节能六合天融环保科技有限公司 | Denitrification catalyst regeneration method |
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