CN212974724U - Ammonia water vaporization device in denitration of hazardous waste sintering flue gas - Google Patents
Ammonia water vaporization device in denitration of hazardous waste sintering flue gas Download PDFInfo
- Publication number
- CN212974724U CN212974724U CN202021538465.XU CN202021538465U CN212974724U CN 212974724 U CN212974724 U CN 212974724U CN 202021538465 U CN202021538465 U CN 202021538465U CN 212974724 U CN212974724 U CN 212974724U
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- CN
- China
- Prior art keywords
- heat exchange
- denitration
- flue gas
- exchange tube
- sintering flue
- 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.)
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- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 title claims abstract description 35
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000003546 flue gas Substances 0.000 title claims abstract description 27
- 238000009834 vaporization Methods 0.000 title claims abstract description 20
- 230000008016 vaporization Effects 0.000 title claims abstract description 20
- 238000005245 sintering Methods 0.000 title claims abstract description 16
- 235000011114 ammonium hydroxide Nutrition 0.000 title claims description 32
- 239000002920 hazardous waste Substances 0.000 title claims description 10
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000007789 gas Substances 0.000 claims abstract description 14
- 229910021529 ammonia Inorganic materials 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 239000012895 dilution Substances 0.000 description 15
- 238000010790 dilution Methods 0.000 description 15
- 238000009423 ventilation Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Landscapes
- Treating Waste Gases (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model provides an aqueous ammonia vapourizing unit among useless sintering flue gas denitration of danger, which comprises a heat exchanger, the heat exchanger includes heat exchange tube and casing, the heat exchange tube sets up in the casing, air inlet and gas outlet have been seted up on the casing, the heat exchange tube is located between air inlet and the gas outlet, the export intercommunication of the gas after the heat transfer on the heat exchanger has the aqueous ammonia evaporimeter that is used for the aqueous ammonia vaporization. The utility model provides an install the heat exchange tube in denitration reactor in the technique right, the heat exchange tube takes place corrosion and damage easily, and the workman of being not convenient for directly maintains the change problem, has produced the effect that has reduced maintenance cost and economic input.
Description
Technical Field
The utility model relates to a solid hazardous waste sintering flue gas treatment facility technical field especially relates to an aqueous ammonia vapourizing unit among useless sintering flue gas denitration of danger.
Background
Usually, ammonia water (denitration reducing agent) with the concentration of 20% is transported by a filling truck and stored in an ammonia water tank in a liquid state, the ammonia water is heated by an electric heater before being injected into the flue gas of the SCR system to be evaporated, the evaporated ammonia is mixed with diluted air and is sprayed into the flue gas at the upstream of the SCR reactor through an ammonia spraying grid, and the reducing agent and the flue gas after being fully mixed react under the action of a catalyst in the SCR reactor to remove NOx. Among the prior art, the aqueous ammonia vaporization is usually for installing the heat exchange tube in the denitration reactor, utilize high temperature waste gas to carry out vaporization treatment to the aqueous ammonia by natural wind after with the heating of the interior natural wind of heat exchange tube, at first install the heat exchange tube in the denitration reactor, the denitration reactor can produce a large amount of corrosive gas and material when carrying out the denitration reaction, the heat exchange tube is easy when long-term the use damaged by the corruption, secondly when the heat exchange tube appears damaged, can be stained with corrosive substance because of its surface is most, the workman of being not convenient for directly maintains the change.
SUMMERY OF THE UTILITY MODEL
To the not enough that exists among the prior art, the utility model provides an aqueous ammonia vapourizing unit among useless sintering flue gas denitration of danger, it has solved and has installed the heat exchange tube in the denitration reactor among the prior art, and the heat exchange tube takes place corrosion damage easily, and is not convenient for the workman and directly maintains the change problem.
According to the utility model discloses an aqueous ammonia vapourizing unit among useless sintering flue gas denitration of danger, including the heat exchanger, the heat exchanger includes heat exchange tube and casing, the heat exchange tube sets up in the casing, air inlet and gas outlet have been seted up on the casing, the heat exchange tube is located between air inlet and the gas outlet, the export intercommunication of the gas after the heat transfer on the heat exchanger has the aqueous ammonia evaporimeter that is used for the aqueous ammonia vaporization.
The technical principle and the beneficial effects of the utility model are that: through setting up the heat exchange tube in the casing, and to letting in the gas of treating heat transfer gas and being used for the heating in the heat exchanger, make the heat exchange tube need not set up in denitration reactor, and then avoid contacting strong corrosive gas and the material in the denitration reactor, be difficult for by corrosion damage, the maintenance cost has been reduced, need not reequip all denitration reactors simultaneously, can be through one or several heat exchangers with many pipelines in order to utilize the waste heat of a plurality of denitration reactors, and provide the ammonia to a plurality of denitration reactors, in addition, when the heat exchange tube appears damaged, do not need the workman to carry out extra anticorrosion measure, alright maintain the heat exchange tube and change.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of the direction of a-a of the heat exchanger in fig. 1 according to the embodiment of the present invention.
Fig. 3 is a schematic structural view of an adapter tube according to an embodiment of the present invention.
Fig. 4 is a right side view of the adapter tube of fig. 3.
In the above drawings: 1. a first denitration dilution fan; 2. a first vent pipe; 3. a second vent pipe; 4. a heat exchanger; 5. a heat exchange pipe; 6. a housing; 7. an ammonia water evaporator; 8. a third vent pipe; 9. an atomizing spray head; 10. a seal ring; 11. a main pipe; 12. and (4) branch pipes.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.
As shown in figure 1, the embodiment of the utility model provides an aqueous ammonia vapourizing unit among useless sintering flue gas denitration of danger, including heat exchanger 4, the export intercommunication of the gas after the heat transfer on heat exchanger 4 has the aqueous ammonia evaporimeter 7 that is used for the aqueous ammonia vaporization. As shown in fig. 2, the heat exchanger 4 includes a heat exchange tube 5 and a housing 6, the heat exchange tube 5 and the housing 6 are both made of stainless steel material, the heat exchange tube 5 is disposed in the housing 6, specifically, two ends of the heat exchange tube 5 are fixedly connected to the housing 6, the housing 6 is provided with an air inlet and an air outlet, the air inlet and the air outlet are oppositely disposed, and the air inlet and the air outlet are located on one axis, taking the direction in fig. 1 as an example, the right side of the housing 6 is provided with an air inlet, the left side of the housing 6 is provided with an air outlet, the heat exchange tube 5 is located between the air inlet and the air outlet, the axial direction of the heat exchange tube 5 is perpendicular to the connecting axis of the air inlet and the air outlet, the heat exchange tubes 5 are provided with a plurality of heat exchange tubes 5, the axes of each heat exchange tube 5 are parallel to each, specifically, the interval is half distance of heat exchange tube 5 outer wall diameter between the adjacent heat exchange tube 5, through the interval that sets up between the adjacent heat exchange tube 5, makes can be more abundant after the high pressure flue gas gets into casing 6 contact with heat exchange tube 5 wall, a plurality of through-holes have been seted up on casing 6, casing 6 is stretched out through above-mentioned through-hole in the both ends of heat exchange tube 5.
When the heat exchange tube is used, the heat exchange tube 5 is used for introducing natural wind, the air inlet on the shell 6 is used for introducing high-temperature flue gas, specifically, as shown in fig. 1, the outlet of the natural wind on the heat exchanger 4 is communicated with an ammonia evaporator 7 for ammonia vaporization, specifically, the ammonia evaporator 7 is provided with an air inlet and an air outlet, the heat exchange tube 5 is communicated with the air inlet, the ammonia evaporator 7 is provided with a water inlet, an atomizing nozzle 9 is arranged in the water inlet, the water spray nozzle of the atomizing nozzle 9 faces the inside of the ammonia evaporator 7, the straight line of the water spray direction of the atomizing nozzle 9 is perpendicular to the axis of the air inlet, the atomizing nozzle 9 can be arranged in a plurality when in actual use, and each atomizing nozzle 9 is parallel to each other, the ammonia water can be added into the ammonia evaporator 7 after being atomized through the atomizing nozzle 9, the contact area of the ammonia water and the natural wind after being heated is increased, through the axis setting with 9 sharp perpendicular to air intakes in atomizer water spray direction places, further increaseed the area of contact of aqueous ammonia and the natural wind after the heating, be convenient for aqueous ammonia vaporization reaction more.
As shown in fig. 1, the denitration device further includes a first air supply device for supplying natural air and a second air supply device for supplying high-temperature flue gas, specifically, in this embodiment, the first air supply device is a first denitration dilution fan 1, the second air supply device is a second denitration dilution fan, and the first denitration dilution fan 1 and the second denitration dilution fan are both denitration dilution fans in the prior art, which are not described herein again. During in-service use, still can be through installing the converter additional on first denitration dilution fan 1 and second denitration dilution fan in order to further save the power consumption cost.
In practical use, as shown in fig. 1, the outlet air of the first denitration dilution fan 1 for conveying natural air is communicated with a first ventilation pipe 2, the other end of the first ventilation pipe 2 is communicated with one end of a heat exchange pipe 5, an adapter shown in fig. 3 and fig. 4 is arranged between the heat exchange pipe 5 and the first ventilation pipe 2, the adapter comprises a plurality of branch pipes 12 and a main pipe 11, the number of the branch pipes 12 is equal to that of the heat exchange pipe 5, when the adapter is connected, the heat exchange pipe 5 is communicated with the branch pipes 12 in a one-to-one manner, the main pipe 11 is communicated with the first ventilation pipe 2, the other end of the heat exchange pipe 5 is communicated with a second ventilation pipe 3, another adapter shown in fig. 3 and fig. 4 is also arranged between the heat exchange pipe 5 and the second ventilation pipe 3, the number of the branch pipes 12 of another adapter is equal to that of the heat exchange pipe 5, when, another adapter be responsible for 11 and be linked together with second vent pipe 3, second vent pipe 3 is linked together with ammonia evaporator 7's air intake, ammonia after 7's air outlet will vaporize discharges and carries out subsequent denitration reaction, and is specific, can communicate third vent pipe 8 in air outlet department, guides the ammonia after the vaporization to in subsequent denitration reaction.
The air outlet of the second denitration dilution fan for conveying high-temperature flue gas is communicated with the air inlet of the heat exchanger 4, sealing rings 10 are arranged at the joints of the first ventilation pipe 2 and the heat exchange pipe 5 and the joints of the heat exchange pipe 5 and the second ventilation pipe 3, and sealing rings 10 are arranged at the joints of the second ventilation pipe 3 and the ammonia evaporator 7 and the joints of the ammonia evaporator 7 and the third ventilation pipe 8.
When the device is used, the first denitration dilution fan 1 and the second denitration dilution fan are manually started and adjusted to proper power, natural wind enters the heat exchange pipe 5 after being sent into the first vent pipe 2 through the first denitration dilution fan 1, high-temperature flue gas is sent into the air inlet of the heat exchanger 4 through the second denitration dilution fan, the high-temperature flue gas is discharged from the air outlet after heating the heat exchange pipe 5, the heated air flows into the second vent pipe 3 from the heat exchange pipe 5 and enters the ammonia evaporator 7, the atomizer 9 is opened, the ammonia water is atomized by the atomizer 9 and then sprayed into the ammonia evaporator 7 and mixed with the heated dilution air for vaporization, and the ammonia water is discharged through the third vent pipe 8 after vaporization for subsequent denitration reaction.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (8)
1. The utility model provides an aqueous ammonia vapourizing unit in useless sintering flue gas denitration of danger which characterized in that: the heat exchanger comprises a heat exchanger, the heat exchanger includes heat exchange tube and casing, the heat exchange tube sets up in the casing, air inlet and gas outlet have been seted up on the casing, the heat exchange tube is located between air inlet and the gas outlet, the export intercommunication of the gas after the heat transfer on the heat exchanger has the ammonia water evaporator that is used for the aqueous ammonia vaporization.
2. The ammonia water vaporization device in the denitration of the hazardous waste sintering flue gas as claimed in claim 1, characterized in that: the ammonia evaporator is provided with an air inlet and an air outlet, and the ammonia evaporator is also provided with a water inlet.
3. The ammonia water vaporization device in the denitration of the hazardous waste sintering flue gas as claimed in claim 1, characterized in that: the air inlet and the air outlet are oppositely arranged and are positioned on one axis.
4. The ammonia water vaporization device in the denitration of the hazardous waste sintering flue gas as claimed in claim 3, characterized in that: the axial direction of the heat exchange tube is vertical to the connecting axis of the air inlet and the air outlet.
5. The ammonia water vaporization device in the denitration of the hazardous waste sintering flue gas as claimed in claim 4, wherein: the heat exchange tube is provided with many, and the axis of every heat exchange tube is parallel to each other.
6. The ammonia water vaporization device in the denitration of the hazardous waste sintering flue gas as claimed in claim 5, wherein: and a space for facilitating the circulation of high-temperature flue gas is arranged between every two adjacent heat exchange tubes.
7. The ammonia water vaporization device in the denitration of the hazardous waste sintering flue gas as claimed in claim 2, characterized in that: and an atomizing nozzle is arranged in the water inlet.
8. The ammonia water vaporization device in the denitration of the hazardous waste sintering flue gas as claimed in claim 1, characterized in that: the device also comprises a first air supply device used for conveying natural wind and a second air supply device used for conveying high-temperature flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021538465.XU CN212974724U (en) | 2020-07-29 | 2020-07-29 | Ammonia water vaporization device in denitration of hazardous waste sintering flue gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021538465.XU CN212974724U (en) | 2020-07-29 | 2020-07-29 | Ammonia water vaporization device in denitration of hazardous waste sintering flue gas |
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| Publication Number | Publication Date |
|---|---|
| CN212974724U true CN212974724U (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021538465.XU Active CN212974724U (en) | 2020-07-29 | 2020-07-29 | Ammonia water vaporization device in denitration of hazardous waste sintering flue gas |
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| Country | Link |
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| CN (1) | CN212974724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113769582A (en) * | 2021-10-26 | 2021-12-10 | 安徽金森源环保工程有限公司 | Ammonia water evaporator device for kiln denitration |
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2020
- 2020-07-29 CN CN202021538465.XU patent/CN212974724U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113769582A (en) * | 2021-10-26 | 2021-12-10 | 安徽金森源环保工程有限公司 | Ammonia water evaporator device for kiln denitration |
| CN113769582B (en) * | 2021-10-26 | 2024-04-16 | 安徽金森源环保工程有限公司 | Ammonia water evaporator device for kiln denitration |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 435200 circular economy industrial park, Fuchi Town, Yangxin County, Huangshi City, Hubei Province Patentee after: Hubei Xiangrui Environmental Protection Co.,Ltd. Address before: 435200 circular economy industrial park, Fuchi Town, Yangxin County, Huangshi City, Hubei Province Patentee before: Hubei zhonghuanxin Environmental Protection Technology Co.,Ltd. |