CN212188577U - Low-temperature denitration equipment - Google Patents
Low-temperature denitration equipment Download PDFInfo
- Publication number
- CN212188577U CN212188577U CN201921580203.7U CN201921580203U CN212188577U CN 212188577 U CN212188577 U CN 212188577U CN 201921580203 U CN201921580203 U CN 201921580203U CN 212188577 U CN212188577 U CN 212188577U
- Authority
- CN
- China
- Prior art keywords
- denitration
- material layer
- catalyst material
- tank
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to the technical field of low-temperature denitration, in particular to low-temperature denitration equipment, which comprises a denitration tank which is vertically installed, wherein a smoke device inlet pipe in the horizontal direction is arranged below the side of the denitration tank, a first air pump is arranged on the smoke device inlet pipe, a regenerated liquid outlet is arranged below the denitration tank, a smoke outlet pipe which is in the vertical direction and is connected with the upper end of the denitration tank is arranged above the denitration tank, and a second air pump is arranged between the smoke outlet pipe and the denitration tank; the denitration tank is characterized in that a packing layer, a first fan device, a first denitration catalyst material layer, a second fan device and dry-wet separation equipment are arranged in the denitration tank from bottom to top, spraying devices are arranged on the inner side wall of the denitration tank above the packing layer and above the first denitration catalyst material layer and the second denitration catalyst material layer, and an access hole is formed in the side wall of the denitration tank. After the equipment is adopted, the utility model discloses denitration efficiency can further be improved.
Description
Technical Field
The utility model relates to a low temperature denitration technology field, especially a low temperature denitration device.
Background
At present, methods for purifying nitrogen oxides in flue gas and other waste gases are many, and the most widely used method is to promote NO by using a catalystxThe Selective Catalytic Reduction (SCR) process for reduction reaction has a simple system, occupies a small area, does not produce or produces few harmful byproducts, and is adopted by most power station boilers. But the active temperature window is higher, the service life of the catalyst is easily shortened due to the dust and SO2, the low-temperature denitration catalyst prepared by the novel catalytic method low-temperature denitration technology by using the activated carbon as the carrier reduces the active temperature of SCR reaction to 90-180 ℃, has better catalytic activity in the temperature range higher than 180 ℃, and is NOxControl provides a new direction. At present, laboratory and pilot plant research aiming at the technology tend to be mature and put into production, but the denitration efficiency of the existing equipment is still not high, so that the further improvement of the denitration efficiency is urgent at present.
Disclosure of Invention
The utility model aims at providing a be applicable to low temperature denitration technique, purify nitrogen oxide's in the flue gas low temperature denitration device.
In order to solve the technical problem, the utility model discloses a low-temperature denitration device which comprises a denitration tank, a smoke device inlet pipe, a first air pump, a regeneration liquid outlet, a flue gas outlet pipe, a second air pump and a gas outlet pipe, wherein the denitration tank is vertically arranged; the denitration tank is characterized in that a packing layer, a first fan device, a first denitration catalyst material layer, a second fan device and dry-wet separation equipment are arranged in the denitration tank from bottom to top, spraying devices are arranged on the inner side wall of the denitration tank above the packing layer and above the first denitration catalyst material layer and the second denitration catalyst material layer, and an access hole is formed in the side wall of the denitration tank.
Furthermore, a first vent hole is distributed in the first denitration catalyst material layer in a honeycomb manner, a second vent hole is distributed in the second denitration catalyst material layer in a honeycomb manner, and mesh-shaped through holes are formed in the surfaces of the first denitration catalyst material layer and the second denitration catalyst material layer and are wrapped by the denitration catalyst.
Further, the first fan device includes: the denitration catalyst material layer comprises a first fan, a support plate, a first air guide pipe and a first air outlet nozzle, wherein the first fan is fixed in the center of the support plate, the outer edge of the support plate is fixed on the inner wall of the denitration tank, the first air guide pipe is connected to the air outlet direction of the first fan, the first air guide pipe is connected with the first air outlet nozzle in a linked mode, and the air outlet direction of the first air outlet nozzle corresponds to the position below a first vent of the first denitration catalyst material layer;
the second fan unit includes: the denitration catalyst material layer comprises a second fan, a supporting rod, a second air guide pipe and a second air outlet nozzle, wherein the second fan is fixed inside the denitration tank through the supporting rod, the second air guide pipe is connected to the air outlet direction of the second fan, the second air guide pipe is connected with the second air outlet nozzle in a linked mode, and the air outlet direction of the second air outlet nozzle corresponds to the position above a second air vent of the second denitration catalyst material layer.
Furthermore, the upper part of the supporting plate is an inclined plane inclined towards the periphery.
Furthermore, the supporting plate and the periphery are provided with water filtering ports.
Further, the wet-dry separation device comprises: the gas inlet is arranged below the gas-liquid separation device, the gas outlet is arranged between the inner corrugated barrel and the outer corrugated barrel on the upper portion of the gas-liquid separation device, the inner corrugated barrel is fixed above the gas inlet, and the outer corrugated barrel is fixed below the gas outlet.
Furthermore, the water outlet is arranged on two sides of the air inlet.
Furthermore, the lower end of the gas-liquid separation device is funnel-shaped.
Compared with the prior art after adopting above structure, have following beneficial effect:
1. for the efficiency of improving the denitration slow down flue gas rebound through setting up at inside first fan unit and the second fan unit of denitration jar and first denitration catalyst material layer and the second denitration catalyst material layer, thereby increase the dwell time of flue gas at first denitration catalyst material layer 4 and second denitration catalyst material layer 5, and increase the pressure between first denitration catalyst material layer 4 and the second denitration catalyst material layer 5, make the flue gas more abundant with the contact of denitration catalyst, thereby reach more high-efficient conversion NOxThe beneficial effects of (1).
2. The liquid separated by the gas-liquid separation device arranged inside the denitration tank can be subjected to a small amount of regeneration treatment, and the packing layer after regeneration treatment, the first denitration catalyst packing layer and the second denitration catalyst packing layer partially recover to intercept and reduce the service frequency of the spraying device due to denitration catalytic capability, so that the beneficial effect of improving the resource utilization rate is achieved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structure block diagram of the low-temperature denitration device of the utility model.
Fig. 2 is a partial enlarged view of the present invention.
Fig. 3 is a structural view of the first fan unit.
Fig. 4 is a structural view of a second fan unit.
Fig. 5 is a schematic view of a first denitration catalyst material layer.
FIG. 6 is a diagram showing the structure of a wet-dry separator
FIG. 7 is a partial enlarged view of the inlet of the wet and dry separation apparatus
In the figure: 1 is a first air pump, 2 is a flue gas inlet pipe, 3 is a first fan device, 4 is a first denitration catalyst material layer, 5 is a second denitration catalyst material layer, 6 is a second fan device, 7 is a dry-wet separation device, 8 is a denitration tank, 9 is a flue gas outlet pipe, 10 is a second air pump, 11 is a spraying device, 12 is a packing layer, 13 is a regeneration liquid outlet, 14 is an access opening, 21 is a first fan, 22 is a first air guide pipe, 23 is a first air outlet nozzle, 24 is a support plate, 24-1 is an inclined plane, 25 is a first air outlet, 26 is a second air outlet, 27 is a support rod, 28 is a second air guide pipe, 29 is a second air outlet, 30 is a second fan, 31 is a denitration catalyst, 32 is a water filter opening, 41 is an air inlet, 42 is an inner corrugated barrel, 43 is an outer corrugated barrel, 44 is an air outlet, and 45 is a water outlet.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The scope of embodiments of the invention encompasses the full ambit of the claims, as well as all available equivalents of the claims.
As shown in fig. 1 and 2, the low-temperature denitration equipment is characterized in that: the denitration device comprises a denitration tank 8 which is vertically installed, wherein a horizontal smoke generator inlet pipe 2 is arranged below the denitration tank 8, a first air pump 1 is arranged on the smoke generator inlet pipe 2, a regenerated liquid outlet 13 is arranged below the denitration tank 8, a vertical smoke outlet pipe 9 connected with the upper end of the denitration tank is arranged above the denitration tank 8, and a second air pump 10 is arranged between the smoke outlet pipe 9 and the denitration tank 8; a packing layer 12, a first fan device 3, a first denitration catalyst material layer 4, a second denitration catalyst material layer 5, a second fan device 6 and a dry-wet separation device 7 are arranged in the denitration tank from bottom to top, a spraying device 11 is arranged on the inner side wall of the denitration tank above the packing layer 12 and above the first denitration catalyst material layer 4 and the second denitration catalyst material layer 5, and an access hole 14 is formed in the side wall of the denitration tank. The flue gas enters from a flue gas inlet pipe 2 through a first air pump 1 and passes through the filler layer 12 to remove dust, water and SO in the flue gas2And NH3Retention of the resulting ammonium sulfate saltIn the packing layer, the pretreated flue gas passes through the first denitration catalyst material layer 4 and the second denitration catalyst material layer 5 to carry out denitration reaction so as to remove NO in the flue gasxAnd (4) removing, namely, discharging the water vapor separated from the dry-wet separation equipment 7 by the denitration-treated clean flue gas through a second air pump 10 from a flue gas outlet pipe 9, so as to achieve the aim of denitration. After a period of operation, a large amount of dust, ammonium sulfate and the like are accumulated in the packing layer 12, so that the interception capability is reduced, and meanwhile, a part of dust and ammonium sulfate enters the first denitration catalyst packing layer 4 and the second denitration catalyst packing layer 5 along with flue gas, so that the denitration efficiency is reduced, at the moment, the spraying device 11 can be used for regeneration treatment, and the regenerated packing layer 12, the first denitration catalyst packing layer 4 and the second denitration catalyst packing layer 5 can recover the interception and denitration catalytic capability. The regeneration waste liquid can be discharged through a regeneration liquid outlet 13 provided below the denitration tank 8. The maintenance and overhaul of the equipment can be conveniently carried out through the overhaul port 14 on the side wall of the denitration tank 8.
As shown in fig. 2, fig. 3, fig. 4 and fig. 5, first ventilation openings 25 are distributed in the first denitration catalyst material layer in a honeycomb manner, second ventilation openings 26 are distributed in the second denitration catalyst material layer in a honeycomb manner, and the surfaces of the first denitration catalyst material layer 4 and the second denitration catalyst material layer 5 are provided with mesh-shaped through holes 15, and the inside of the first denitration catalyst material layer and the second denitration catalyst material layer is wrapped with a denitration catalyst 31. The first fan unit 3 includes: the first fan 21, the support plate 24, the first air guiding pipe 22, and the first air outlet nozzle 23. The first fan 21 is fixed in the center of the supporting plate 24, the outer edge of the supporting plate 24 is fixed on the inner wall of the denitration tank 8, the first air guide pipe 22 is connected to the air outlet direction of the first fan 21, the first air guide pipe 22 is connected with a first air outlet nozzle 23 in a link mode, and the air outlet direction of the first air outlet nozzle 23 corresponds to the position below a first air vent 25 of the first denitration catalyst material layer 4; the second fan unit 6 includes: a second fan 30, a support bar 27, a second air duct 28 and a second air outlet nozzle 29. The second fan 30 is fixed inside the denitration tank 8 through a support rod 27, the second air guide pipe 28 is connected to the air outlet direction of the second fan 30, the second air guide pipe 28 is connected with a second air outlet nozzle 29, and the second air outlet nozzle 29 is connected with the second air guide pipe 28The air outlet direction of the second air outlet nozzle 29 corresponds to the upper part of the second ventilation opening 26 of the second denitration catalyst material layer 5. The air outlet power of the first fan device 3 is greater than the air outlet power of the second fan device 6. After passing through the packing layer 12, the flue gas is sucked into the first air guide pipe 22 through the first fan device 3 and then is sprayed into the first vent 25 through the first air outlet nozzle 23 to enter the first denitration catalyst material layer 4, so that the flue gas passes through the through hole 15 on the first denitration catalyst material layer 4 to be fully contacted with the denitration catalyst 31, and the NO in the flue gas is improvedxWhen the flue gas enters the second ventilation opening 26, the second fan 30 blows out gas through the second air outlet nozzle 29 on the second air guide pipe 28, and the upward movement of the flue gas is slowed down, so that the retention time of the flue gas on the first denitration catalyst material layer 4 and the second denitration catalyst material layer 5 is increased, the pressure between the first denitration catalyst material layer 4 and the second denitration catalyst material layer 5 is increased, and the flue gas is more fully contacted with the denitration catalyst. Thereby achieving more efficient NO conversionXThe beneficial effects of (1).
The upper part of the supporting plate 24 as shown in fig. 3, 6 and 7 is a slope 24-1 inclined to the periphery. And water filtering ports 32 are arranged around the supporting plate. The dry-wet separation device 7 comprises: the gas-liquid separation device comprises a gas inlet 41, an inner corrugated barrel 42, an outer corrugated barrel 43, a gas outlet 44 and a water outlet 45, wherein the gas inlet 41 is arranged at the lower end of the gas-liquid separation device 7, the lower end of the inner corrugated barrel 42 is communicated with the gas inlet 41, a gap is reserved between the lower end of the inner corrugated barrel 42 and the top of the gas-liquid separation device 7, the outer corrugated barrel 43 is sleeved outside the inner corrugated barrel 42 and fixed at the top of the gas-liquid separation device 7, a gap is reserved between the lower end of the outer corrugated barrel 43 and the lower end of the gas-liquid separation device 7, the gas outlet 44 is arranged at the top of the gas-liquid separation device 7 and positioned outside the outer corrugated barrel 43, and the water. The lower end of the gas-liquid separation device 7 is funnel-shaped.
The flue gas after denitration by first denitration catalyst packing layer 4 and second denitration catalyst packing layer 5 enters into interior ripple bucket 42 through air inlet 41 again, enters into outer ripple bucket 43 from the opening part of interior ripple bucket 42 top again, and outside the rethread outer ripple 38 bucket lower extreme opening leaves the bucket, again discharge from gas outlet 44. When the flue gas flows inside and outside the inner corrugated barrel 42 and inside and outside the outer corrugated barrel 43, it needs to turn for many times, so that the flue gas easily collides with the inner and outer sidewalls of the inner corrugated barrel 42 and the outer corrugated barrel 43, thereby separating the liquid. The liquid separated by the inner wall of the inner corrugated barrel 42 directly falls into the lower part through the air inlet 38, and the liquid separated by the outer wall of the inner corrugated barrel 42 and the inner and outer walls of the outer corrugated barrel 43 flows into the funnel-shaped bottom of the gas-liquid separation device 7 and then flows back to the lower part through the water outlet 45, so that the recycling of the separated liquid is improved. At this time, a small amount of regeneration treatment can be performed on the first denitration catalyst material layer 4, the second denitration catalyst material layer 5 and the packing layer 12 below by using the liquid separated by the gas-liquid separation device 7, and the packing layer 12 after the regeneration treatment, the first denitration catalyst packing layer 4 and the second denitration catalyst packing layer 5 partially recover the interception and denitration catalytic ability, thereby reducing the use frequency of the spraying device 11, and achieving the beneficial effect of improving the resource utilization rate. The regeneration waste liquid above the support plate 24 can flow into the water filter 32 through the inclined surface 24-1 at the upper part of the support plate and be discharged together with the regeneration waste liquid at the lower part of the support plate through the regeneration liquid outlet 13 arranged at the lowest part of the denitration tank 8.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many changes and modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.
Claims (7)
1. A low temperature denitration device which is characterized in that: the denitration device comprises a denitration tank which is vertically installed, wherein a horizontal smoke generator inlet pipe is arranged below the side of the denitration tank, a first air pump is arranged on the smoke generator inlet pipe, a regeneration liquid outlet is arranged at the lowest part of the denitration tank, a vertical smoke outlet pipe connected with the upper end of the denitration tank is arranged above the denitration tank, and a second air pump is arranged between the smoke outlet pipe and the denitration tank; the denitration tank is characterized in that a packing layer, a first fan device, a first denitration catalyst material layer, a second fan device and dry-wet separation equipment are arranged in the denitration tank from bottom to top, spraying devices are arranged on the inner side wall of the denitration tank above the packing layer and above the first denitration catalyst material layer and the second denitration catalyst material layer, and an access hole is formed in the side wall of the denitration tank.
2. The low-temperature denitration apparatus according to claim 1, wherein: the first denitration catalyst material layer is internally provided with a first vent in a honeycomb manner, the second denitration catalyst material layer is internally provided with a second vent in a honeycomb manner, and the first denitration catalyst material layer and the second denitration catalyst material layer are provided with mesh-shaped through holes on the surfaces thereof and are internally wrapped by a denitration catalyst.
3. The low-temperature denitration apparatus according to any one of claims 1 or 2, wherein: the first fan unit includes: the denitration catalyst material layer comprises a first fan, a support plate, a first air guide pipe and a first air outlet nozzle, wherein the first fan is fixed in the center of the support plate, the outer edge of the support plate is fixed on the inner wall of the denitration tank, the first air guide pipe is connected to the air outlet direction of the first fan, the first air guide pipe is connected with the first air outlet nozzle in a linked mode, and the air outlet direction of the first air outlet nozzle corresponds to the position below a first vent of the first denitration catalyst material layer;
the second fan unit includes: the denitration catalyst material layer comprises a second fan, a supporting rod, a second air guide pipe and a second air outlet nozzle, wherein the second fan is fixed inside the denitration tank through the supporting rod, the second air guide pipe is connected to the air outlet direction of the second fan, the second air guide pipe is connected with the second air outlet nozzle in a linked mode, and the air outlet direction of the second air outlet nozzle corresponds to the position above a second air vent of the second denitration catalyst material layer.
4. The low-temperature denitration apparatus according to claim 3, wherein: the upper part of the supporting plate is an inclined plane which inclines to the periphery.
5. The low-temperature denitration apparatus according to claim 3, wherein: the supporting plate and the periphery are provided with water filtering ports.
6. The low-temperature denitration apparatus according to claim 1, wherein: the dry-wet separation equipment comprises: the gas inlet is arranged at the lower part of the gas-liquid separation device, the inner corrugated barrel is vertically fixed at the lower end of the gas-liquid separation device, the lower end of the inner corrugated barrel is communicated with the gas inlet, a gap is reserved between the lower end of the inner corrugated barrel and the top of the gas-liquid separation device, the outer corrugated barrel is sleeved outside the inner corrugated barrel and fixed at the top of the gas-liquid separation device, a gap is reserved between the lower end of the outer corrugated barrel and the lower end of the gas-liquid separation device, the gas outlet is arranged at the top of the gas-liquid separation device and positioned outside the outer corrugated barrel, and the water outlet is arranged at two sides of the gas inlet.
7. The low-temperature denitration apparatus according to claim 6, wherein: the lower end of the gas-liquid separation device is funnel-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921580203.7U CN212188577U (en) | 2019-09-23 | 2019-09-23 | Low-temperature denitration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921580203.7U CN212188577U (en) | 2019-09-23 | 2019-09-23 | Low-temperature denitration equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212188577U true CN212188577U (en) | 2020-12-22 |
Family
ID=73807139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921580203.7U Active CN212188577U (en) | 2019-09-23 | 2019-09-23 | Low-temperature denitration equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212188577U (en) |
-
2019
- 2019-09-23 CN CN201921580203.7U patent/CN212188577U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105214496B (en) | A kind of dedusting and denitrification integrated device | |
| CN205127751U (en) | Remove dust and denitration integrated device | |
| CN105107349A (en) | Coke oven flue gas desulfurization and denitrification purification process and device | |
| CN103785275A (en) | Desulfurization, dedusting and denitration integrated flue-gas purifier | |
| CN204996310U (en) | Coke oven flue gas SOx/NOx control unites purifier | |
| CN204735109U (en) | Ammonia process desulphurization unit that control ammonia was escaped | |
| CN109224741A (en) | Integral dedusting desulfurizing tower | |
| CN203725021U (en) | Efficient integrated desulfurizing, dedusting and demisting device | |
| CN109772124A (en) | A kind of flue gas desulfurization and denitrification takes off white equipment | |
| CN201572607U (en) | Dust removal and denitration composite device for coal smoke | |
| CN209985137U (en) | Dye waste gas purification treatment device | |
| CN109173715B (en) | Denitration and dust removal integrated dust remover | |
| CN212188577U (en) | Low-temperature denitration equipment | |
| CN212039665U (en) | Dust removal denitration integration equipment is used in production of sintering gangue perforated brick | |
| CN209254469U (en) | A kind of flue gas purification device | |
| CN203540319U (en) | Pre-charge spraying, desulfurizing and dust-removing device | |
| CN212283409U (en) | Wet flue gas dust removal system after wet desulphurization | |
| CN212262815U (en) | Combined desulfurizing tower | |
| CN211753845U (en) | Improved generation exhaust gas desulfurization denitrification facility | |
| CN209809765U (en) | High-efficient soot blower suitable for denitration of cement cellar flue gas SCR | |
| CN209934468U (en) | Novel desulfurization and denitrification dust remover | |
| CN209934332U (en) | VOCs synthesizes treatment system with desulfurization dust removal function | |
| CN203448181U (en) | Combined type electric demister | |
| CN206660865U (en) | A kind of sound coalescence synergy demister | |
| CN217220905U (en) | Red mud is used for desulfurization dust collector of thermoelectric flue gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 214000 Zhuhai Road, huankeyuan, Yixing, Wuxi, Jiangsu Patentee after: Jiangsu xinzhongjin Low Carbon Technology Co.,Ltd. Address before: 214200 huankeyuan Zhuhai Road, Yixing City, Wuxi City, Jiangsu Province Patentee before: JIANGSU XINZHONGJIN ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |