CN103878034A - Regeneration method of arsenic/phosphorus-poisoned selective catalytic reduction denitrification catalyst - Google Patents
Regeneration method of arsenic/phosphorus-poisoned selective catalytic reduction denitrification catalyst Download PDFInfo
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- CN103878034A CN103878034A CN201410127771.7A CN201410127771A CN103878034A CN 103878034 A CN103878034 A CN 103878034A CN 201410127771 A CN201410127771 A CN 201410127771A CN 103878034 A CN103878034 A CN 103878034A
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- 239000003054 catalyst Substances 0.000 title claims abstract description 79
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 20
- 238000011069 regeneration method Methods 0.000 title claims abstract description 20
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 19
- 238000010531 catalytic reduction reaction Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 17
- 230000008929 regeneration Effects 0.000 claims abstract description 17
- 239000002253 acid Substances 0.000 claims abstract description 14
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical compound [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims abstract description 13
- 239000011609 ammonium molybdate Substances 0.000 claims abstract description 13
- 229940010552 ammonium molybdate Drugs 0.000 claims abstract description 13
- 235000018660 ammonium molybdate Nutrition 0.000 claims abstract description 13
- UNTBPXHCXVWYOI-UHFFFAOYSA-O azanium;oxido(dioxo)vanadium Chemical compound [NH4+].[O-][V](=O)=O UNTBPXHCXVWYOI-UHFFFAOYSA-O 0.000 claims abstract description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 9
- 239000011574 phosphorus Substances 0.000 claims abstract description 9
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 6
- 239000004094 surface-active agent Substances 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 5
- 239000011259 mixed solution Substances 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 27
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 18
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 16
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- 238000010926 purge Methods 0.000 claims description 12
- 238000009418 renovation Methods 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 10
- 229910021641 deionized water Inorganic materials 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 235000019270 ammonium chloride Nutrition 0.000 claims description 8
- 235000006408 oxalic acid Nutrition 0.000 claims description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- -1 alkyl phenol Chemical compound 0.000 claims description 4
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000001771 impaired effect Effects 0.000 claims description 3
- 230000002779 inactivation Effects 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000001632 sodium acetate Substances 0.000 claims description 3
- 235000017281 sodium acetate Nutrition 0.000 claims description 3
- 235000010265 sodium sulphite Nutrition 0.000 claims description 3
- 239000013589 supplement Substances 0.000 claims description 3
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 238000013517 stratification Methods 0.000 claims description 2
- 208000008316 Arsenic Poisoning Diseases 0.000 abstract description 14
- 238000012545 processing Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract 3
- 230000003197 catalytic effect Effects 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 14
- 238000012360 testing method Methods 0.000 description 10
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 230000009849 deactivation Effects 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 230000008439 repair process Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 5
- WKXHZKXPFJNBIY-UHFFFAOYSA-N titanium tungsten vanadium Chemical compound [Ti][W][V] WKXHZKXPFJNBIY-UHFFFAOYSA-N 0.000 description 5
- 208000005374 Poisoning Diseases 0.000 description 4
- 231100000572 poisoning Toxicity 0.000 description 4
- 230000000607 poisoning effect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a regeneration method of arsenic/phosphorus-poisoned selective catalytic reducing denitrification catalyst. The method comprises the following steps of mechanically clearing ash, washing by adopting the alkaline washing liquid, immersing by adopting a regeneration liquid and drying, wherein the alkaline washing liquid is a mixed solution of strong-alkali weak-acid salt and surface active agent and the acid regeneration liquid consists of ammonium salt, weak acid, ammonium metavanadate and ammonium molybdate. The arsenic/phosphorus-poisoned selective catalytic reducing denitrification catalyst is regenerated by adopting the method, the arsenic and phosphorus can be basically removed of the catalyst, the catalyst has a certain arsenic poisoning resistance, the denitrification rate can reach 81 to 88 percent, and the pressure-resisting strength and the abrasive strength of the catalyst can be maintained; in addition, the regeneration process flow is simple, the processing efficiency is high, and the regeneration method is applicable to the industrial mass production.
Description
Technical field
The present invention relates to SCR (SCR) denitrating catalyst field, be specifically related to the renovation process of a kind of arsenic and phosphorism denitrifying catalyst with selective catalytic reduction.
Background technology
Nitrogen oxide is one of main atmosphere pollution, and coal-fired power plant is one of main emission source of nitrogen oxide.Along with promulgation and the enforcement of a series of environmental protection policies of China, SCR method gas denitrifying technology is just progressively applied in coal-burning power plant of China.By the end of the year 2012, the coal steam-electric plant smoke denitration unit total capacity that put into operation exceedes 2.3 hundred million kW, accounts for 28% of national active service fired power generating unit capacity, has improved 10% than 2011; In 2013, the newly-increased thermoelectricity denitration installed capacity in the whole nation was 1.3 times of " 12 " the first two years total amount.SCR denitrating catalyst is active can decline gradually in use, when its activity drops to can not meet the requiring of " fossil-fuel power plant atmospheric pollutant emission standard " time, just need to change, its replacement cycle is generally 3 years, and renewal cost accounts for 50% of SCR system total price.SCR catalyst to inactivation is regenerated, and can improve or recover its activity, reaches the object of re-using.Regeneration expense only accounts for 30% of whole replacing catalyst costs, and has saved the cost of processing spent catalyst, and therefore, the regeneration of SCR catalyst has very important economic benefit and environmental benefit.
Arsenic and phosphorism are one of common causes causing catalysqt deactivation.Arsenic (As) is poisoning is that As can be oxidized to the As of gaseous state because ignition temperature is higher than 1400 DEG C
2o
3and be present in flue gas these As
2o
3molecule enters into the micropore of catalyst, with O
2and V
2o
5reaction, forms As at catalyst surface
2o
5, the destruction that causes catalyst activity component.The poisoning main cause of phosphorus (P) is that P has replaced V and the W in V-OH and W-OH, has generated P-OH, and it is acid not as V-OH and W-OH, and weak acidic site can only be provided, and causes catalyst to NH
3absorption can weaken; In addition, P also can react with the V=O active sites of catalyst surface, generates VOPO
4deng material, thereby reduce the quantity of active sites.
Cause that the arsenic of catalyst poisoning and the compound of phosphorus generally present acidity, adopt Alkaline pretreatment just can reach good effect.In research, find to have mentioned respectively the processing method for arsenic poisoning and phosphorism in the Chinese invention patent of publication number CN102814201A and publication number CN102026721A.The former is to adopt strong acid and strong base alternating action to the processing of arsenic, and this,, by the catalyst strength after regeneration is sustained damage, has reduced service life; In addition, its regeneration technology more complicated, has increased industrial production cost, can produce a large amount of waste liquor contamination environment simultaneously.The latter has only used highly basic in the time of the catalyst treatment to phosphorism, and acidifying and active material are supplemented to shortage research, although the method is fine to the treatment effect of phosphorus, strength damage is also larger, and is difficult to obtain higher denitration activity.
On this basis, this patent has proposed a kind of renovation process of the new SCR denitrating catalyst for arsenic and phosphorism.The method can simplification of flowsheet, reduces production costs and reduces the pollution of regenerative process to environment, also can make the catalyst after regeneration still have higher intensity and longer service life, is therefore more conducive to large-scale industrial production.
Summary of the invention
The object of this invention is to provide the SCR denitrating catalyst renovation process of a kind of new arsenic and phosphorism, can utilize succinct mode efficiently to remove the arsenic and the phosphorus component that cause catalyst poisoning, supplement impaired active component simultaneously, make catalyst recover its higher denitration activity, have certain anti-arsenic poisoning ability simultaneously.
For achieving the above object, the present invention is by the following technical solutions:
A renovation process for the SCR denitrating catalyst of arsenic and phosphorism, comprises the following steps:
(1) with 2～6Mpa, flow 0.5～1.0m
3the clean dried compressed air of/s purges the SCR denitrating catalyst of inactivation, and to remove surperficial dust stratification, the time is 10～20min;
(2) grey catalyst after treatment be will blow and the ultrasonic auxiliary cleaning of alkaline cleaning fluid, time 20～60min, ultrasonic power 100～500w will be placed in;
(3) clean by rinsed with deionized water;
(4) by catalyst soakage in regenerated liquid, remove residual arsenic and phosphorus composition, simultaneously supplement impaired active component, dip time 1～4h;
(5) by catalyst dry 1～3h at 100～150 DEG C, then roasting 2～5h at 350～450 DEG C, obtains the SCR denitrating catalyst after regeneration.
Wherein, described alkaline cleaning fluid is the mixed solution of strong base-weak acid salt and surfactant, and strong base-weak acid salt is one or more of sodium carbonate, sodium acetate, sodium sulfite or sodium metasilicate, and concentration is 0.1～2mol/L; Surfactant is one or more of paregal O (AEO), micropore permeation agent JFC or alkyl phenol polyoxy ether (OP～(n), n=10), and content is 0.2～1wt%; Surplus is deionized water.
Wherein, described regenerated liquid consist of ammonium salt, weak acid, ammonium metavanadate and ammonium molybdate, ammonium salt is one or both of ammonium chloride or ammonium nitrate, concentration is 0.1～2mol/L; Weak acid is one or more of oxalic acid, acetic acid or citric acid, and content is 0.1～1wt%; Ammonium metavanadate content is 0.5～4wt%; Ammonium molybdate content is 1～6wt%; Surplus is deionized water.
Further, preferred described cleaning fluid is made up of 0.8mol/L sodium carbonate, 0.3wt% paregal O.
Further, preferred described regenerated liquid is made up of 1mol/L ammonium chloride, 0.6wt% oxalic acid, 2wt% ammonium metavanadate, 4wt% ammonium molybdate.
Beneficial effect:
The beneficial effect of the renovation process of arsenic of the present invention and phosphorism SCR denitrating catalyst is:
(1) the present invention's cleaning fluid used presents alkalescent, can be in removing arsenic and phosphorus composition, farthest keep compression strength, tear strength and the active component of catalyst; In cleaning fluid, add surfactant, and adopted ultrasonic auxiliary cleaning, improved greatly cleaning efficiency;
(2) ammonium salt containing in regenerated liquid of the present invention and weak acid can further be removed residual a small amount of arsenic and phosphorus component, reach the object purifying completely; Regenerated liquid can be also catalyst make-up active component, and its denitration activity is further enhanced; The ammonium molybdate adding can make the catalyst after regeneration obtain certain anti-arsenic poisoning ability.
(3) to using the SCR denitrating catalyst after this method regeneration to carry out denitration activity detection, find that its denitration rate can reach 81～88%.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is elaborated, thereby so that advantages and features of the invention can be easier to be it will be appreciated by those skilled in the art that, protection scope of the present invention is made to more explicit defining.
Embodiment 1
(1) solution preparation
Cleaning fluid: 0.8mol/L sodium carbonate, 0.3wt% paregal O;
Regenerated liquid: 1mol/L ammonium chloride, 0.6wt% oxalic acid, 2wt% ammonium metavanadate, 4wt% ammonium molybdate.
(2) technological process
Institute's sample thief be certain power plant to have moved the vanadium tungsten titanium of 23000 hours be denitrating catalyst, find that after testing denitration rate is 53%, deactivation cause is serious arsenic poisoning.First, utilize 3Mpa, flow 0.5m
3the Compressed Gas of/s purges 10min to the denitrification catalyst module of arsenic poisoning; Secondly, insert ultrasonic auxiliary cleaning 30min in cleaning fluid by purging complete catalyst, utilize deionized water to carry out rinsing; Then, by catalyst soakage after treatment 3h in regenerated liquid; Finally, utilize the hot-air of 120 DEG C to be dried 2h to catalyst.SCR denitrating catalyst regenerative process finishes.
Catalyst after regeneration is carried out to denitration activity test, find that its denitration rate returns to 88% by 53%.
Embodiment 2
(1) solution preparation
Cleaning fluid: 0.5mol/L sodium carbonate, 0.3wt% paregal O;
Regenerated liquid: 1mol/L ammonium chloride, 0.6wt% oxalic acid, 2wt% ammonium metavanadate, 4wt% ammonium molybdate.
(2) technological process
Institute's sample thief be certain power plant to have moved the vanadium tungsten titanium of 23000 hours be denitrating catalyst, find that after testing denitration rate is 53%, deactivation cause is serious arsenic poisoning.First, utilize 3Mpa, flow 0.5m
3the Compressed Gas of/s purges 10min to the denitrification catalyst module of arsenic poisoning; Secondly, insert ultrasonic auxiliary cleaning 30min in cleaning fluid by purging complete catalyst, utilize deionized water to carry out rinsing; Then, by catalyst soakage after treatment 3h in regenerated liquid; Finally, utilize the hot-air of 120 DEG C to be dried 2h to catalyst.SCR denitrating catalyst regenerative process finishes.
Catalyst after regeneration is carried out to denitration activity test, find that its denitration rate returns to 82% by 53%.
Embodiment 3
(1) solution preparation
Cleaning fluid: 0.8mol/L sodium acetate, 0.3wt% micropore permeation agent JFC;
Regenerated liquid: 1mol/L ammonium chloride, 1wt% acetic acid, 2wt% ammonium metavanadate, 4wt% ammonium molybdate.
(2) technological process
Institute's sample thief be certain power plant to have moved the vanadium tungsten titanium of 23000 hours be denitrating catalyst, find that after testing denitration rate is 53%, deactivation cause is serious arsenic poisoning.First, utilize 3Mpa, flow 0.5m
3the Compressed Gas of/s purges 10min to the denitrification catalyst module of arsenic poisoning; Secondly, insert ultrasonic auxiliary cleaning 30min in cleaning fluid by purging complete catalyst, utilize deionized water to carry out rinsing; Then, by catalyst soakage after treatment 3h in regenerated liquid; Finally, utilize the hot-air of 120 DEG C to be dried 2h to catalyst.SCR denitrating catalyst regenerative process finishes.
Catalyst after regeneration is carried out to denitration activity test, find that its denitration rate returns to 85% by 53%.
Embodiment 4
(1) solution preparation
Cleaning fluid: 1mol/L sodium sulfite, 0.3wt% paregal O;
Regenerated liquid: 0.5mol/L ammonium nitrate, 0.6wt% oxalic acid, 2wt% ammonium metavanadate, 4wt% ammonium molybdate.
(2) technological process
Institute's sample thief be certain power plant to have moved the vanadium tungsten titanium of 23000 hours be denitrating catalyst, find that after testing denitration rate is 53%, deactivation cause is serious arsenic poisoning.First, utilize 3Mpa, flow 0.5m
3the Compressed Gas of/s purges 10min to the denitrification catalyst module of arsenic poisoning; Secondly, insert ultrasonic auxiliary cleaning 30min in cleaning fluid by purging complete catalyst, utilize deionized water to carry out rinsing; Then, by catalyst soakage after treatment 3h in regenerated liquid; Finally, utilize the hot-air of 120 DEG C to be dried 2h to catalyst.SCR denitrating catalyst regenerative process finishes.
Catalyst after regeneration is carried out to denitration activity test, find that its denitration rate returns to 82% by 53%.
Embodiment 5
(1) solution preparation
Cleaning fluid: 0.8mol/L sodium carbonate, 0.5wt%OP～(n), n=10;
Regenerated liquid: 0.2mol/L ammonium chloride, 0.4wt% citric acid, 2wt% ammonium metavanadate, 4wt% ammonium molybdate.
(2) technological process
Institute's sample thief be certain power plant to have moved the vanadium tungsten titanium of 23000 hours be denitrating catalyst, find that after testing denitration rate is 53%, deactivation cause is serious arsenic poisoning.First, utilize 3Mpa, flow 0.5m
3the Compressed Gas of/s purges 10min to the denitrification catalyst module of arsenic poisoning; Secondly, insert ultrasonic auxiliary cleaning 30min in cleaning fluid by purging complete catalyst, utilize deionized water to carry out rinsing; Then, by catalyst soakage after treatment 3h in regenerated liquid; Finally, utilize the hot-air of 120 DEG C to be dried 2h to catalyst.SCR denitrating catalyst regenerative process finishes.
Catalyst after regeneration is carried out to denitration activity test, find that its denitration rate returns to 81% by 53%.
Finally it should be noted that: obviously, above-described embodiment is only for example of the present invention is clearly described, and the not restriction 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 without also giving exhaustive to all embodiments.And the apparent variation of being amplified out thus or variation are still among protection scope of the present invention.
Claims (5)
1. a renovation process for arsenic and phosphorism denitrifying catalyst with selective catalytic reduction, is characterized in that, comprises the following steps:
(1) with 2～6Mpa, flow 0.5～1.0m
3the clean dried compressed air of/s purges the SCR denitrating catalyst of inactivation, and to remove surperficial dust stratification, the time is 10～20min;
(2) grey catalyst after treatment be will blow and the ultrasonic auxiliary cleaning of alkaline cleaning fluid, time 20～60min, ultrasonic power 100～500w will be placed in;
(3) clean by rinsed with deionized water;
(4) by catalyst soakage in regenerated liquid, remove residual arsenic and phosphorus composition, simultaneously supplement impaired active component, dip time 1～4h;
(5) by catalyst dry 1～3h at 100～150 DEG C, then roasting 2～5h at 350～450 DEG C, obtains the SCR denitrating catalyst after regeneration.
2. renovation process according to claim 1, it is characterized in that: described alkaline cleaning fluid is the mixed solution of strong base-weak acid salt and surfactant, strong base-weak acid salt is one or more of sodium carbonate, sodium acetate, sodium sulfite or sodium metasilicate, and concentration is 0.1～2mol/L; Surfactant is paregal O, i.e. AEO, micropore permeation agent JFC or alkyl phenol polyoxy ether, and wherein OP～(n), and one or more of n=10, content is 0.2～1wt%.
3. renovation process according to claim 1, is characterized in that: described regenerated liquid consist of ammonium salt, weak acid, ammonium metavanadate and ammonium molybdate, ammonium salt is one or both of ammonium chloride or ammonium nitrate, concentration is 0.1～2mol/L; Weak acid is one or more of oxalic acid, acetic acid or citric acid, and content is 0.1～1wt%; Ammonium metavanadate content is 0.5～4wt%; Ammonium molybdate content is 1～6wt%; Surplus is deionized water.
4. renovation process according to claim 2, is characterized in that: preferred described cleaning fluid is made up of 0.8mol/L sodium carbonate, 0.3wt% paregal O.
5. renovation process according to claim 3, is characterized in that: preferred described regenerated liquid is made up of 1mol/L ammonium chloride, 0.6wt% oxalic acid, 2wt% ammonium metavanadate, 4wt% ammonium molybdate.
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|---|---|---|---|
| CN201410127771.7A CN103878034B (en) | 2014-04-01 | 2014-04-01 | The renovation process of a kind of arsenic and phosphorism denitrifying catalyst with selective catalytic reduction |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104128212A (en) * | 2014-08-01 | 2014-11-05 | 焦占付 | SCR (selective catalytic reduction) denitration catalyst deactivation repair agent and inactivation regeneration process |
| CN104162456A (en) * | 2014-08-05 | 2014-11-26 | 洛阳昊海工贸有限公司 | Cleaning liquid for regenerating denitration catalyst and cleaning method |
| CN104548935A (en) * | 2014-12-30 | 2015-04-29 | 中国华电工程(集团)有限公司 | Regeneration method of SCR (selective catalytic reduction) catalyst |
| CN104624050A (en) * | 2015-01-22 | 2015-05-20 | 李灏呈 | Method for recycling wasted SCR denitrification catalyst |
| CN104826669A (en) * | 2015-04-26 | 2015-08-12 | 重庆大学 | Alkali washing liquid for regenerating SCR denitration catalysts and application thereof |
| CN104857998A (en) * | 2015-06-02 | 2015-08-26 | 清华大学 | Efficient regenerating method for As-poisoned denitration catalyst |
| CN105148940A (en) * | 2015-08-20 | 2015-12-16 | 天河（保定）环境工程有限公司 | Regeneration impregnation liquid and regeneration technology for vanadium-titanium corrugated plate type denitrification catalyst |
| CN105396626A (en) * | 2014-09-10 | 2016-03-16 | 大唐国际化工技术研究院有限公司 | Regeneration liquid of SCR denitration catalyst and regeneration method of SCR denitration catalyst |
| CN105618162A (en) * | 2016-01-04 | 2016-06-01 | 大唐国际化工技术研究院有限公司 | Recycling and reusing method of waste vanadium tungsten titanium-based denitration catalyst |
| CN105728064A (en) * | 2016-03-04 | 2016-07-06 | 北京科林佰德化工科技有限公司 | Method for cleaning and regenerating SCR denitration catalyst for potassium and sodium poisoning deactivation |
| CN106378208A (en) * | 2016-08-19 | 2017-02-08 | 安徽元琛环保科技股份有限公司 | A regenerating method for a power plant flue gas denitration catalyst |
| CN106607106A (en) * | 2015-10-26 | 2017-05-03 | 浙江浙能技术研究院有限公司 | Activity regenerating and performance optimizing method of SCR catalyst for sulfur, arsenic and phosphorus poisoning |
| CN107442135A (en) * | 2017-08-25 | 2017-12-08 | 华北电力大学 | A kind of renovation process of arsenic poisoning SCR denitration |
| CN108671931A (en) * | 2018-04-23 | 2018-10-19 | 清华大学 | A kind of method of modifying of the denitrating catalyst with anti-toxicity energy |
| CN111036310A (en) * | 2019-12-25 | 2020-04-21 | 中节能万润股份有限公司 | Regenerated monolithic molecular sieve-based denitration catalyst, and regeneration method and application thereof |
| CN114558625A (en) * | 2022-03-14 | 2022-05-31 | 龙净科杰环保技术（上海）有限公司 | SCR denitration catalyst regeneration process in steel industry |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010012817A1 (en) * | 1998-07-24 | 2001-08-09 | Shigeru Nojima | Methods for the regenertion of a denitration 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 |
| 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 |
-
2014
- 2014-04-01 CN CN201410127771.7A patent/CN103878034B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010012817A1 (en) * | 1998-07-24 | 2001-08-09 | Shigeru Nojima | Methods for the regenertion of a denitration 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 |
| CN103143401A (en) * | 2011-12-07 | 2013-06-12 | 徐树元 | Flue gas denitrification catalyst on-line regeneration activator liquid and preparation method thereof |
| 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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| CN105396626B (en) * | 2014-09-10 | 2018-06-29 | 大唐国际化工技术研究院有限公司 | A kind of regeneration method of SCR denitration regenerated liquid and SCR denitration |
| CN105396626A (en) * | 2014-09-10 | 2016-03-16 | 大唐国际化工技术研究院有限公司 | Regeneration liquid of SCR denitration catalyst and regeneration method of SCR denitration catalyst |
| CN104548935A (en) * | 2014-12-30 | 2015-04-29 | 中国华电工程(集团)有限公司 | Regeneration method of SCR (selective catalytic reduction) catalyst |
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| CN105728064A (en) * | 2016-03-04 | 2016-07-06 | 北京科林佰德化工科技有限公司 | Method for cleaning and regenerating SCR denitration catalyst for potassium and sodium poisoning deactivation |
| CN106378208A (en) * | 2016-08-19 | 2017-02-08 | 安徽元琛环保科技股份有限公司 | A regenerating method for a power plant flue gas denitration catalyst |
| CN107442135A (en) * | 2017-08-25 | 2017-12-08 | 华北电力大学 | A kind of renovation process of arsenic poisoning SCR denitration |
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