CN205095643U - Low temperature denitrification facility - Google Patents
Low temperature denitrification facility Download PDFInfo
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- CN205095643U CN205095643U CN201520840943.5U CN201520840943U CN205095643U CN 205095643 U CN205095643 U CN 205095643U CN 201520840943 U CN201520840943 U CN 201520840943U CN 205095643 U CN205095643 U CN 205095643U
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- spray gun
- low
- reaction unit
- temperature denitration
- mixing arrangement
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- 239000007921 spray Substances 0.000 claims abstract description 50
- 239000003054 catalyst Substances 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- 239000000843 powder Substances 0.000 claims abstract description 28
- 238000003892 spreading Methods 0.000 claims abstract description 13
- 230000007480 spreading Effects 0.000 claims abstract description 13
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000003860 storage Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000009827 uniform distribution Methods 0.000 abstract 2
- 230000001174 ascending effect Effects 0.000 abstract 1
- 230000002596 correlated effect Effects 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 239000003546 flue gas Substances 0.000 description 10
- 229910021529 ammonia Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- WWILHZQYNPQALT-UHFFFAOYSA-N 2-methyl-2-morpholin-4-ylpropanal Chemical compound O=CC(C)(C)N1CCOCC1 WWILHZQYNPQALT-UHFFFAOYSA-N 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005094 computer simulation Methods 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000011859 microparticle Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 150000005837 radical ions Chemical class 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000005514 two-phase flow Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Treating Waste Gases (AREA)
Abstract
The utility model relates to a low temperature denitrification facility belongs to atmosphere environmental protection technology field. Including powder adding device, ammonifying device, mixing arrangement and reaction unit, powder adding device includes digester and storage device, the export of digester with the entry linkage of storage device, the export of storage device is passed through the governing valve and is connected the spreading device, the spreading device includes a set of vaporific spray gun at least, corresponds under the vaporific spray gun of every group to set up the ascending impact spray gun of a set of nozzle, set up V type bracket between vaporific spray gun and the impact spray gun, V type bracket is last to set up circular recess uniform distribution plate, pass through spring coupling between the uniform distribution plate. Compared with the prior art, low temperature denitrification facility, eliminated catalyst serious unfavorable interference of when operation, realize the normal operating of catalyst to improve denitrification facility's low temperature denitration ability, real solution is correlated with and is discharged the trouble back at home of enterprise.
Description
Technical field
The utility model relates to a kind of denitrification apparatus, is specifically related to a kind of low-temperature denitration device, belongs to air environmental technology field.
Background technology
Electric power, comprises metallurgy, cement and glass industry, and due to operational characteristic, its Industrial Stoves operating temperature is usually below middle low temperature; Although there is high temperature some kiln associated hot combustion reaction fields, only office is confined to little space; Flame kernel 1 ~ 2 meter of outer temperature sharply declines; Special picture rotary kiln high temperature section or rotating operation mode; SNCR denitration technology can be operated in burner hearth, but needs burner hearth 900 DEG C ~ 1000 DEG C temperature sections and need a certain size space.
Can produce the waste gas of a large amount of nitrogen-containing oxide in production process, its concentration, usually beyond the discharge standard of country, therefore needs to carry out denitration process, and the flue gas of the nearly all burner afterbody discharge of these industries above-mentioned is less than 220 DEG C of temperature substantially; And traditional denitration reaction (SCR) needs the reaction temperature of 300 DEG C ~ 420 DEG C higher interval.
A kind of comparatively advanced gas method of denitration is selective catalytic reduction denitration technology (SCR) at present, waste gas containing nitrogen oxide is carried out mixing according to a certain percentage with ammonia and sends into SCR reactor, at a certain temperature also by the effect of the catalyst in SCR reactor, nitrogen oxide is made to generate ammonia and water with ammonia react, realize the object of gas denitration, but existing denitration reaction device is mainly middle high temperature catalyst denitration design, its serviceability temperature is 300 DEG C ~ 420 DEG C even higher, and these industries above-mentioned nearly all burner afterbody discharge flue gas be less than 220 DEG C, at this temperature, SO2 is oxidized to SO3 by the catalyst in denitration reaction device, SO3 and ammonia react rapidly and produce ammonium sulfate and ammonium hydrogen sulfate, ammonium sulfate and ammonium hydrogen sulfate can cover the micropore place producing catalyst in denitration reaction device, cause rapid catalyst deactivation, therefore, the research and development of low temperature section denitration technology will open huge Environmental Protection Market.
Summary of the invention
Goal of the invention: for the deficiency of currently available technology, provides a kind of and can adapt to the device of denitration under lower temperature and utilize the method for its denitration.
Technical scheme: a kind of low-temperature denitration device, comprise ammonifying device, mixing arrangement and reaction unit, described ammonifying device is embedded to be connected in flue, described mixing arrangement and reaction unit are placed in flue outside, the outlet of described ammonifying device is communicated with the entrance of described mixing arrangement, the entrance of described reaction unit and the outlet of described mixing arrangement; Also comprise the powder adding device being placed in flue inside, the outlet of described powder adding device is communicated with the entrance of described mixing arrangement; Described powder adding device comprises at least one group of spreading device, described spreading device comprises vaporific spray gun and impacts spray gun, described vaporific spray gun is arranged vertically downward, described impact spray gun is arranged at immediately below described vaporific spray gun, the spray outlet of described vaporific spray gun and impact spray gun is oppositely arranged, further, circular groove shape uniform board is set above the shower nozzle of described impact spray gun, between described uniform board and described vaporific spray gun, forms uniform cavity.
Further, described vaporific spray gun inside is one-shot forming eccentric screw structure, and end nozzle place arranges antifriction alloy five and ties up channel-type blade.
Further, described impact spray gun inside is hollow cone structure, and end nozzle place arranges antifriction alloy three-dimensional channel formula blade.
Further, described uniform board is fixedly installed by V-type support.
Further, when described spreading device is more than 2 groups, connected by spring between described uniform board.
Further, one deck catalyst module is at least provided with in described reaction unit.
Further, the catalyst module of described reaction unit is 3 layers.
Further, the catalyst module of described reaction unit is V-Ti series ceramic homogeneous material.
Further, described reaction unit is flow fieldization design, its velocity vector angle <10 °.
Beneficial effect: compared with prior art, advantage of the present utility model: denitration pulvis forms diffused powder ball through spreading device, spread in smoke space, SO2 and SO3 in flue gas is sponged, thus prevent viscosity sulfate from forming shielding at catalyst surface, eliminate unfavorable interference serious when catalyst runs, realize the normal operation of catalyst; 3 layers of catalyst module are set, considerably increase reaction contact surface and the probability of catalyst, improve the denitration efficiency of catalyst, thus improve the low-temperature denitration ability of denitrification apparatus, the real trouble and worry solving associated emissions enterprise.
Accompanying drawing explanation
Fig. 1 is a kind of low-temperature denitration device described in the utility model and the process chart utilizing its denitration;
Fig. 2 is the structural representation of the powder adding device of a kind of low-temperature denitration device described in the utility model.
Detailed description of the invention
Below by accompanying drawing, technical solutions of the utility model are described in detail:
Embodiment 1: a kind of low-temperature denitration device, its structure as shown in Figure 1, comprise ammonifying device 2, mixing arrangement 3 and reaction unit 4, described ammonifying device 2 is embedded to be connected in flue, described mixing arrangement 3 and reaction unit 4 are placed in flue outside, the outlet of described ammonifying device 2 is communicated with the entrance of described mixing arrangement 3, the entrance of described reaction unit 4 and the outlet of described mixing arrangement 3; Also comprise the powder adding device 1 being placed in flue inside, the outlet of described powder adding device 1 is communicated with the entrance of described mixing arrangement 3; Described powder adding device 1, its structure as shown in Figure 2, comprise at least one group of spreading device, described spreading device comprises vaporific spray gun 6 and impacts spray gun 7, and described vaporific spray gun 6 is arranged vertically downward, and described impact spray gun 7 is arranged at immediately below described vaporific spray gun 6, the spray outlet of described vaporific spray gun 6 and impact spray gun 7 is oppositely arranged, further, circular groove shape uniform board 9 is set above the shower nozzle of described impact spray gun 7, between described uniform board 9 and described vaporific spray gun 6, forms uniform cavity.Described uniform board 9 is stainless steel uniform board, and is fixedly installed by V-type support 8, when described spreading device is more than 2 groups, is connected between described uniform board 9 by spring 10, ensures that uniform board 9 is indeformable.
Complete unit is dispersed layout, and leaves other module mating interfaces.Described powder adding device 1 is absorption plant feature, embedded; Described ammonifying device 2 is distribution shape device, embedded; Described mixing arrangement 3 is externally positioned type equipment, special gas device; Described reaction unit 4 is multimode combined unit, interior insert-type.
Described powder adding device 1, ammonifying device 2 are the reducing agent source of described reaction unit 4.Under the effect of catalyst, former flue gas obtains denitration reduction reaction; Bad air from interference source can not produce viscosity sulfate under the obstruction of calcium hydroxide pulvis; Thus prevent from forming shielding at catalyst surface, cause catalyst poisoning; The utility model eliminates serious unfavorable interference when catalyst runs by powder adding device 1, realize catalyst normally to run, prevent the shielding of flow velocity radical ion reaction to catalyst, considerably increase catalyst reaction contact surface, improve the denitration efficiency of catalyst; Thus the real low-temperature zone denitration ability improving denitrification apparatus.
In the present embodiment, described powder adding device 1 is rectangle high temperature resistant stainless steel device, and the perpendicular bisector in its cross section is perpendicular to the middle part of described flue, and through Flow Field Calculation, supporting DCS switch board runs; Its process upstream is preparation and storage arrangement; External airtight two-phase flow fluid.This device is according to flue gas flow size, flow velocity height; Configure gas, fixed double phase flow spray gun special as calculated afterwards; In the present embodiment, described vaporific spray gun 6 inside is one-shot forming eccentric screw structure, and end nozzle place arranges antifriction alloy five and ties up channel-type blade.Described impact spray gun 7 inside is hollow cone structure, and end nozzle place arranges antifriction alloy three-dimensional channel formula blade, by vaporific spray gun 6 and the acting in conjunction impacting spray gun 7, can be scattered in flue by the maximized powder diffused that makes.
In the present embodiment, described pulvis is slaked lime powder, and its particle diameter is 5 ~ 8 μm, and particle diameter is excessive, can not react in time or arrive inside honeycomb, and particle diameter is too small just can not " be waftd " inside honeycomb; Therefore, this pulvis wants the many of science than the winding-up of conventional art simple alkali material; This pulvis is special pulvis, is prepared by digester, needs control time, humidity during storage.This pulvis manufacturer's standard is moral mark T40/T60, and market can have been bought completely.The former flue gas of boiler emission injects the calcium hydroxide pulvis meeting specification at powder adding device place, become a kind of diffused smog.
Described powder adding device 1 is also provided with distribution apparatus, deposition blow device and deposit retracting device, for reclaiming deposition reactant.
The denitration pulvis prepared by digester by Geldart-D particle to storage arrangement, by Geldart-D particle to powder adding device, through the PLC control centre of smoke components feedback signal afferent module, control centre analyzes and sends command signal, and commander's regulon controls this plant running; Whole module is in advance through flow field analysis, adopt extraordinary design spray gun technique, current-sharing module device is set in flue, vaporific spray gun 6 and impact spray gun 7 scientific matching, Special composition scattered distribution, under feedback signal commander, science adds powder, and forms diffused powder ball, spread in smoke space, whole space does not have bubble, joint alveolation, uneven homogenize; The reverse side of catalyst in reaction unit can be arrived; And traditional powder adding device is only simply blow; Its effect must have very large inhomogeneities, and not can arrive the reverse side of catalyst.SO2 and SO3 in flue gas sponges by diffused powder ball, thus prevents viscosity sulfate from forming shielding at catalyst surface, eliminates unfavorable interference serious when catalyst runs, realizes the normal operation of catalyst.
The perpendicular bisector in cross section described in described ammonifying device 2 is perpendicular to the middle part of described flue, and module of the present utility model, through Flow Field Calculation, far can operate operation by DCS.Inside establish dilution air, because ammonia is special gas, this device also has anti-riot function concurrently; By this device, under the monitoring of instrument, ammonia reaches preset requirement completely, and layering, point group, cutout do not occur.
Described mixing arrangement 3 is arranged near device 4; During device fabrication after parameter preset without the need to operation.
Described reaction unit 4 is low-temperature denitration of flue gas main region, adopt the design of rectangle flow fieldization, the perpendicular bisector in its cross section is perpendicular to the middle part of described flue, and its principal character is concordant flow field, calculate through flow field computer simulation, velocity vector angle <10 °; During device fabrication after parameter preset without the need to operation; In the present embodiment, establish the catalyst module 11 that haves three layers in described reaction unit 4, described catalyst module 11 is low temperature catalyst, adopts V-Ti series ceramic homogeneous material, needs customization.In device 4 skewed gas flow technology drive under, the corresponding microparticle attaching interference source occurs that secondary is kicked up phenomenon, and can exit from micropore, boiler original flue gas completes denitration reaction behind this region becomes neat stress, and delivers to following device according to technological requirement through flow field.
In addition, the predeterminable reserved layer of reaction unit 4, inconvenience when preventing boiler ultra-long time from running.
Utilize the method for above-mentioned low-temperature denitration device denitration, comprise the following steps:
(1) pulvis prepared by digester by Geldart-D particle to storage arrangement, through the PLC control centre of smoke components feedback signal afferent module, PLC control centre analyzes and sends signal, commander's regulon controls this module and runs, whole module is through flow field analysis, under the instruction of PLC control centre, denitration pulvis is injected to powder adding device 2, at vaporific spray gun 6 with under the acting in conjunction impacting spray gun 7, form diffused pulvis group, when reaching the concentration of default diffused pulvis group, stop spraying denitration pulvis; Start again to spray pulvis after the change of parameter occurrence characteristics causes interlocking action, so go round and begin again;
(2) under the effect of dilution air, the ammonia that ammonifying device 2 produces reaches preset concentration, also enters reaction unit 4 in turn with being rolled into a ball by the diffused pulvis produced in step (1) fully to mix in mixing arrangement 3;
(3) under the effect of the catalyst module 11 of reaction unit 4, there is denitration reduction reaction.
The absorbent that the utility model is prepared by digester forms diffused powder ball through spreading device, spread in smoke space, SO2 and SO3 in flue gas is sponged, thus prevent viscosity sulfate from forming shielding at catalyst surface, eliminate unfavorable interference serious when catalyst runs, realize the normal operation of catalyst; 3 layers of catalyst module 1 are set, considerably increase reaction contact surface and the probability of catalyst, improve the denitration efficiency of catalyst, thus improve the low-temperature denitration ability of denitrification apparatus, the real trouble and worry solving associated emissions enterprise.
As mentioned above, although represented with reference to specific preferred embodiment and described the utility model, it shall not be construed as the restriction to the utility model self.Under the spirit and scope prerequisite of the present utility model not departing from claims definition, various change can be made in the form and details to it.
Claims (9)
1. a low-temperature denitration device, comprise ammonifying device (2), mixing arrangement (3) and reaction unit (4), described ammonifying device (2) is embedded to be connected in flue, described mixing arrangement (3) and reaction unit (4) are placed in flue outside, the outlet of described ammonifying device (2) is communicated with the entrance of described mixing arrangement (3), the entrance of described reaction unit (4) and the outlet of described mixing arrangement (3), it is characterized in that, also comprise the powder adding device (1) being placed in flue inside, the outlet of described powder adding device (1) is communicated with the entrance of described mixing arrangement (3), described powder adding device (1) comprises at least one group of spreading device, described spreading device comprises vaporific spray gun (6) and impacts spray gun (7), described vaporific spray gun (6) is arranged vertically downward, described impact spray gun (7) is arranged at immediately below described vaporific spray gun (6), the spray outlet of described vaporific spray gun (6) and impact spray gun (7) is oppositely arranged, and, above the shower nozzle of described impact spray gun (7), circular groove shape uniform board (9) is set, uniform cavity is formed between described uniform board (9) and described vaporific spray gun (6).
2. a kind of low-temperature denitration device according to claim 1, is characterized in that, described vaporific spray gun (6) inside is one-shot forming eccentric screw structure, and end nozzle place arranges antifriction alloy five and ties up channel-type blade.
3. a kind of low-temperature denitration device according to claim 1, is characterized in that, described impact spray gun (7) inside is hollow cone structure, and end nozzle place arranges antifriction alloy three-dimensional channel formula blade.
4. a kind of low-temperature denitration device according to claim 1, is characterized in that, described uniform board (9) is fixedly installed by V-type support (8).
5. a kind of low-temperature denitration device according to claim 1, is characterized in that, when described spreading device is more than 2 groups, is connected between described uniform board (9) by spring (10).
6. a kind of low-temperature denitration device according to claim 1, is characterized in that, is at least provided with one deck catalyst module (11) in described reaction unit (4).
7. a kind of low-temperature denitration device according to claim 6, is characterized in that, the catalyst module (11) of described reaction unit (4) is 3 layers.
8. a kind of low-temperature denitration device according to claim 6, is characterized in that, the catalyst module (11) of described reaction unit (4) is V-Ti series ceramic homogeneous material.
9. a kind of low-temperature denitration device according to claim 6, is characterized in that, described reaction unit (4) is flow fieldization design, its velocity vector angle <10 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840943.5U CN205095643U (en) | 2015-10-27 | 2015-10-27 | Low temperature denitrification facility |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520840943.5U CN205095643U (en) | 2015-10-27 | 2015-10-27 | Low temperature denitrification facility |
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| CN205095643U true CN205095643U (en) | 2016-03-23 |
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| CN201520840943.5U Expired - Fee Related CN205095643U (en) | 2015-10-27 | 2015-10-27 | Low temperature denitrification facility |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289272A (en) * | 2015-10-27 | 2016-02-03 | 江苏海澜正和环境科技有限公司 | Low-temperature denitration device and method for denitration through low-temperature denitration device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105289272A (en) * | 2015-10-27 | 2016-02-03 | 江苏海澜正和环境科技有限公司 | Low-temperature denitration device and method for denitration through low-temperature denitration device |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of utility model: Low-temperature denitration device and method for denitration through low-temperature denitration device Effective date of registration: 20190815 Granted publication date: 20160323 Pledgee: Jiangning Branch of Jiangsu Zijin Rural Commercial Bank Co.,Ltd. Pledgor: NANJING HAILAN ZHENGHE ENVIRONMENTAL SCIENCE & TECHNOLOGY CO.,LTD. Registration number: Y2019320000040 |
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Date of cancellation: 20200803 Granted publication date: 20160323 Pledgee: Jiangning Branch of Jiangsu Zijin Rural Commercial Bank Co.,Ltd. Pledgor: NANJING HAILAN ZHENGHE ENVIRONMENTAL SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2019320000040 |
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Denomination of utility model: A low temperature denitration device Effective date of registration: 20200805 Granted publication date: 20160323 Pledgee: Jiangning Branch of Jiangsu Zijin Rural Commercial Bank Co.,Ltd. Pledgor: NANJING HAILAN ZHENGHE ENVIRONMENTAL SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2020320000175 |
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Date of cancellation: 20210708 Granted publication date: 20160323 Pledgee: Jiangning Branch of Jiangsu Zijin Rural Commercial Bank Co.,Ltd. Pledgor: NANJING HAILAN ZHENGHE ENVIRONMENTAL SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2020320000175 |
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Denomination of utility model: A low temperature denitration device Effective date of registration: 20210712 Granted publication date: 20160323 Pledgee: Jiangning Branch of Jiangsu Zijin Rural Commercial Bank Co.,Ltd. Pledgor: NANJING HAILAN ZHENGHE ENVIRONMENTAL SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2021320000130 |
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