CN204447754U - Matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus - Google Patents
Matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus Download PDFInfo
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- CN204447754U CN204447754U CN201520017275.6U CN201520017275U CN204447754U CN 204447754 U CN204447754 U CN 204447754U CN 201520017275 U CN201520017275 U CN 201520017275U CN 204447754 U CN204447754 U CN 204447754U
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- plasma
- tube reactor
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- reactor
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- 230000002195 synergetic effect Effects 0.000 title claims abstract description 34
- 230000004888 barrier function Effects 0.000 title claims abstract description 33
- 239000011159 matrix material Substances 0.000 title claims abstract description 16
- 238000003421 catalytic decomposition reaction Methods 0.000 title claims abstract description 13
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 34
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 28
- 239000010453 quartz Substances 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 21
- 239000003546 flue gas Substances 0.000 claims description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 239000000779 smoke Substances 0.000 claims description 8
- 239000006004 Quartz sand Substances 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000005030 aluminium foil Substances 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 9
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 8
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000003708 ampul Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000008246 gaseous mixture Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model provides a kind of matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus, belongs to gas fired-boiler denitration technology field.This device comprises two groups of individual media barrier discharge plasma synergistic catalysts and adsorbs/decompose Benitration reactor, one group of plasma generating device, a set of gas distributing system, plasma generating device is placed in two groups of individual media barrier plasma synergistic catalysts and adsorbs/decompose in the middle of Benitration reactor, by the air inlet triple valve in adjusting device and triple valve of giving vent to anger, the NO that gas fired-boiler produces
xfirst directly entering one group of individual media barrier plasma synergistic catalyst adsorbs/decomposes in Benitration reactor, utilizes packed catalyst layer to carry out NO
xabsorption, another group connects plasma electrical source, carries out plasma body cooperative catalyst decomposes NO
xprocess, realizes denitration.This apparatus structure is simple, with low cost, operates easy.
Description
Technical field
The utility model relates to gas fired-boiler denitration technology field, refers to a kind of matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus especially.
Background technology
Along with China's " coal changes gas " engineering continues to advance and urban society's expanding economy, central heating gas fired-boiler in city will become the capital equipment of city heat supply in winter, and the nitrogen oxide (NO at this point produced
x) therefore discharge capacity also can increase further.The NO of " 12 " period country's proposition
xoverall control index, and for NO
xdischarge standard also improving gradually.Therefore, for the NO of city central heating boiler
xemission request is also more and more stricter.
At present, conventional business method of denitration is SCR (SCR) technology, and this technology carrys out nitrogen oxides reduction by adding the reducing agents such as liquefied ammonia in 300-400 DEG C of flue gas.And commercial SCR denitration technology is for the NO of concentrated gas-heating boiler
xthere is many restrictions in removal: the common reaction temperature of (1) commercial SCR denitration technology is 300-400 DEG C, and concentrate gas fired-boiler flue-gas temperature mainly at about 100 DEG C, lower than the reaction temperature needed for SCR technology, need to carry out secondary temperature elevation to flue gas, increase energy consumption and engineering cost.(2) SCR denitration technology is mainly directed to smoke discharge amount greatly, the coal-fired plant boiler denitration that load variations is large, and the change of central heating gas fired-boiler flue gas load greatly, and capacity is little, and SCR technology cannot effectively solve.(3) SCR denitration technology is usually with NH
3as main denitrification reducing agent, need to arrange the storage facilities such as special liquid ammonia storage tank.For urban heat supplying boiler, it takes up an area comparatively large, and in liquefied ammonia transport and storing process, likely can cause NH
3the potential safety hazards such as leakage.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus, according to gas fired-boiler fume emission feature and NO
xemission request, uses medium barrier plasma technology, to solve the deficiency of existing SCR denitration device, realizes the NO of gas fired-boiler
xremove.
This device comprises two groups of individual media barrier discharge plasma synergistic catalysts and adsorbs/decompose Benitration reactor, one group of plasma generating device and a set of gas distributing system, wherein, individual media barrier discharge plasma synergistic catalyst adsorbs/decomposes Benitration reactor and comprises crust of the device, plasma single tube reactor, earthing pole lead-out wire, high-field electrode lead-out wire and plasma electrical source, crust of the device two ends are respectively equipped with smoke air inlet and flue gas gas outlet, smoke air inlet and flue gas gas outlet be external air inlet triple valve and triple valve of giving vent to anger respectively, earthing pole lead-out wire is connected with plasma electrical source with high-field electrode lead-out wire, plasma generating device is placed in two groups of individual media barrier discharge plasma synergistic catalysts and adsorbs/decompose in the middle of Benitration reactor.
Plasma single tube reactor comprises high-field electrode, quartz tube reactor, earthing pole, packed catalyst layer and quartz sand plate, quartz tube reactor skin is earthing pole, high-field electrode is positioned in the middle of quartz tube reactor, in quartz tube reactor, quartz sand plate is arranged at bottom, is filled with packed catalyst layer in quartz tube reactor.Plasma single tube reactor is matrix arrangement, often arrange 10-100 root plasma single tube reactor, adjacent plasma single tube reactor is spaced apart 3-10cm, and often arrange the shared plasma electrical source of 10-100 root plasma single tube reactor, two covers single group individual media barrier discharge plasma synergistic catalysts adsorb/decompose denitrification apparatus and share a set of plasma electrical source.
Discharge medium in plasma single tube reactor is quartz tube reactor, and pipe external diameter is 3-20cm, and wall thickness is 2-5mm, pipe range 80-200cm; High-field electrode is metal bar or metal tube, and material is copper, aluminium, stainless steel etc., and diameter is 3-20mm; Ground connection is aluminium foil, Copper Foil, aluminium net or copper mesh very, and length is 80-200cm, and region of discharge length is 80-200cm, and discharging gap is 5-100mm.
In use, by the air inlet triple valve in adjusting device and triple valve of giving vent to anger, the NO that gas fired-boiler produces
xfirst directly entering one group of individual media barrier discharge plasma synergistic catalyst adsorbs/decomposes in Benitration reactor, utilizes packed catalyst layer to carry out NO
xsuction-operated, reaches the NO of more than 95%
xremove, another group individual media barrier discharge plasma synergistic catalyst adsorbs/decomposes Benitration reactor connection plasma generating device simultaneously, carries out plasma body cooperative catalyst decomposes NO
xprocess, NO
xbe broken down into N
2and O
2, realize the regeneration of catalyst simultaneously.Afterwards, regulate the circuit of plasma generating device, NO will be carried out before
xthe reaction unit of absorption connects plasma body cooperative catalyst decomposes process, and another group device carries out NO
xabsorption, thus realize the continuous operation of denitrification process.
The beneficial effect of technique scheme of the present utility model is as follows:
(1) this device according to the quantity of the concentration adjustment plasma single tube reactor of exhaust gas volumn and pollutant, can make reaction unit mate with exhaust gas volumn, reaches the NO of optimum
xremoval effect.
(2) the plasma operations process of this device is intermittent duty, effectively can reduce the energy loss in running.
(3) this device is simple, with low cost, operates easy.
(4) this equipment safety hidden danger is few, is easy to the installation and operation of city heat supply in winter boiler.
Accompanying drawing explanation
Fig. 1 is matrix form medium barrier plasma synergistic sorption of the present utility model/catalytic decomposition denitrification apparatus structural representation;
Fig. 2 is plasma single tube reactor structural representation;
Fig. 3 organizes individual media barrier discharge plasma synergistic catalyst for list and adsorbs/decompose denitrification apparatus structural representation;
Fig. 4 is that individual media barrier discharge plasma synergistic catalyst adsorbs/decompose plasma single tube reactor layout schematic diagram in denitrification apparatus.
In figure:
1-air inlet triple valve; 2-individual media barrier discharge plasma synergistic catalyst adsorbs/decomposes Benitration reactor; 3-plasma generating device; 4-gives vent to anger triple valve; 5-high-field electrode; 6-quartz tube reactor; 7-earthing pole; 8-packed catalyst layer; 9-quartz sand plate; 10-smoke air inlet; 11-crust of the device; 12-plasma single tube reactor; 13-earthing pole lead-out wire; 14-plasma electrical source; 15-high-field electrode lead-out wire; 16-flue gas gas outlet.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The problems such as the utility model is large for existing gas fired-boiler method of denitration energy consumption, poor stability, provide a kind of matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus.
As Fig. 1, Fig. 2, shown in Fig. 3, this device comprises two groups of individual media barrier discharge plasma synergistic catalysts and adsorbs/decompose Benitration reactor 2, one group of plasma generating device 3 and a set of gas distributing system, wherein, individual media barrier discharge plasma synergistic catalyst adsorbs/decomposes Benitration reactor 2 and comprises crust of the device 11, plasma single tube reactor 12, earthing pole lead-out wire 13, high-field electrode lead-out wire 15 and plasma electrical source 14, crust of the device 11 two ends are respectively equipped with smoke air inlet 10 and flue gas gas outlet 16, smoke air inlet 10 and flue gas gas outlet 16 be external air inlet triple valve 1 and triple valve 4 of giving vent to anger respectively, earthing pole lead-out wire 13 is connected with plasma electrical source 14 with high-field electrode lead-out wire 15, plasma generating device 3 is placed in two groups of individual media barrier discharge plasma synergistic catalysts and adsorbs/decompose in the middle of Benitration reactor 2.
Plasma single tube reactor 12 comprises high-field electrode 5, quartz tube reactor 6, earthing pole 7, packed catalyst layer 8 and quartz sand plate 9, quartz tube reactor 6 skin is earthing pole 7, high-field electrode 5 is positioned in the middle of quartz tube reactor 6, in quartz tube reactor 6, quartz sand plate 9 is arranged at bottom, is filled with packed catalyst layer 8 in quartz tube reactor 6.As shown in Figure 4, plasma single tube reactor 12 is in matrix arrangement, often arrange 10-100 root plasma single tube reactor 12, adjacent plasma single tube reactor 12 is spaced apart 3-10cm, and often arranges the shared plasma electrical source 14 of 10-100 root plasma single tube reactor 12.
Embodiment 1
Using 15%Cu-CMS as packed catalyst layer 8.With diameter 10mm, long 25cm quartz ampoule is as quartz tube reactor 6,3mm copper rod as high-field electrode 5, and aluminium foil is earthing pole 7.Getting appropriate 15%Cu-CMS and be placed in reaction system, is that 300ml/min contains 0.05%NO by flow, 2.8%O
2, N
2gaseous mixture as Balance Air passes into reaction unit, and stop ventilation after absorption 20min, carry out low-temperature plasma synergistic decomposition reaction, plasma output voltage 7.8kV, frequency 8.9kHz, discharge time stops after 10min.Re-start aforesaid operations afterwards 4 times, single NO
xclearance is 95%.
Embodiment 2
Using a kind of active carbon of copper modification as packed catalyst layer 8.With diameter 50mm, long 30cm quartz ampoule is as quartz tube reactor 6,8mm copper pipe as high-field electrode 5, and Copper Foil is earthing pole 7.Get appropriate 10%Cu-AC and be placed in reaction system, be that 3000ml/min contains 0.05%NO by flow, air passes into reaction unit as the gaseous mixture of Balance Air, ventilation is stopped after absorption 30min, carry out low-temperature plasma synergistic decomposition reaction, plasma output voltage 7.8KV, frequency 8.9KHz, discharge time stops after 20min.Re-start aforesaid operations afterwards 3 times, single NO
xclearance is 95%.
The above is preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus, it is characterized in that: this device comprises two groups of individual media barrier discharge plasma synergistic catalysts and adsorbs/decompose Benitration reactor (2), one group of plasma generating device (3) and a set of gas distributing system, wherein, individual media barrier discharge plasma synergistic catalyst adsorbs/decomposes Benitration reactor (2) and comprises crust of the device (11), plasma single tube reactor (12), earthing pole lead-out wire (13), high-field electrode lead-out wire (15) and plasma electrical source (14), crust of the device (11) two ends are respectively equipped with smoke air inlet (10) and flue gas gas outlet (16), smoke air inlet (10) and flue gas gas outlet (16) external air inlet triple valve (1) and triple valve of giving vent to anger (4) respectively, earthing pole lead-out wire (13) is connected with plasma electrical source (14) with high-field electrode lead-out wire (15), plasma generating device (3) is placed in two groups of individual media barrier discharge plasma synergistic catalysts and adsorbs/decompose in the middle of Benitration reactor (2).
2. matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus according to claim 1, it is characterized in that: described plasma single tube reactor (12) comprises high-field electrode (5), quartz tube reactor (6), earthing pole (7), packed catalyst layer (8) and quartz sand plate (9), quartz tube reactor (6) skin is earthing pole (7), high-field electrode (5) is positioned in the middle of quartz tube reactor (6), quartz sand plate (9) is arranged at quartz tube reactor (6) interior bottom, packed catalyst layer (8) is filled with in quartz tube reactor (6).
3. matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus according to claim 1, it is characterized in that: described single group individual media barrier discharge plasma synergistic catalyst adsorbs/decompose plasma single tube reactor (12) in Benitration reactor (2) in matrix arrangement, often arrange 10-100 root plasma single tube reactor (12), adjacent plasma single tube reactor (12) is spaced apart 3-10cm.
4. the matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus according to claim 1 or 3, is characterized in that: described 10-100 root plasma single tube reactor (12) that often arranges shares a plasma electrical source (14).
5. matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus according to claim 1 and 2, it is characterized in that: the quartz tube reactor (6) in described plasma single tube reactor (12), pipe external diameter is 3-20cm, wall thickness is 2-5mm, pipe range 80-200cm; High-field electrode (5) is metal bar or metal tube, and material is copper, aluminium or stainless steel, and diameter is 3-20mm; Earthing pole (7) is aluminium foil, Copper Foil, aluminium net or copper mesh, and long is 80-200cm.
6. matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus according to claim 1 and 2, it is characterized in that: the region of discharge length of described plasma single tube reactor (12) is 80-200cm, and discharging gap is 5-100mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520017275.6U CN204447754U (en) | 2015-01-12 | 2015-01-12 | Matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus |
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| CN201520017275.6U CN204447754U (en) | 2015-01-12 | 2015-01-12 | Matrix form medium barrier plasma synergistic sorption/catalytic decomposition denitrification apparatus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548925A (en) * | 2015-01-12 | 2015-04-29 | 北京科技大学 | Matrix type dielectric barrier plasma synergistic adsorption/catalytic decomposition denitration device |
| CN105338723A (en) * | 2015-10-09 | 2016-02-17 | 苏州大学 | DBD plasma discharge device driven by high-voltage high-frequency source |
| CN105983301A (en) * | 2016-01-29 | 2016-10-05 | 合肥工业大学 | Electrode rotation type odorous gas treatment module |
| CN107486253A (en) * | 2017-08-30 | 2017-12-19 | 大连民族大学 | A kind of dielectric barrier discharge plasma makes the Ag/Al of inactivation2O3Catalyst original position regeneration method |
| CN110860201A (en) * | 2018-08-27 | 2020-03-06 | 广东美的环境电器制造有限公司 | Formaldehyde degradation device |
-
2015
- 2015-01-12 CN CN201520017275.6U patent/CN204447754U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104548925A (en) * | 2015-01-12 | 2015-04-29 | 北京科技大学 | Matrix type dielectric barrier plasma synergistic adsorption/catalytic decomposition denitration device |
| CN105338723A (en) * | 2015-10-09 | 2016-02-17 | 苏州大学 | DBD plasma discharge device driven by high-voltage high-frequency source |
| CN105983301A (en) * | 2016-01-29 | 2016-10-05 | 合肥工业大学 | Electrode rotation type odorous gas treatment module |
| CN107486253A (en) * | 2017-08-30 | 2017-12-19 | 大连民族大学 | A kind of dielectric barrier discharge plasma makes the Ag/Al of inactivation2O3Catalyst original position regeneration method |
| CN108097334A (en) * | 2017-08-30 | 2018-06-01 | 大连民族大学 | A kind of dielectric barrier discharge plasma makes the Ag/Al of inactivation2O3Catalyst original position regeneration method |
| CN110860201A (en) * | 2018-08-27 | 2020-03-06 | 广东美的环境电器制造有限公司 | Formaldehyde degradation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20170112 |