CN218485600U - Cement kiln bypass denitration system that leaks informaton - Google Patents
Cement kiln bypass denitration system that leaks informaton Download PDFInfo
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- CN218485600U CN218485600U CN202222512562.7U CN202222512562U CN218485600U CN 218485600 U CN218485600 U CN 218485600U CN 202222512562 U CN202222512562 U CN 202222512562U CN 218485600 U CN218485600 U CN 218485600U
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- Prior art keywords
- air
- air inlet
- mixing chamber
- denitration
- pipe
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- 239000004568 cement Substances 0.000 title claims abstract description 16
- 239000007921 spray Substances 0.000 claims abstract description 25
- 239000000779 smoke Substances 0.000 claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 30
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 11
- 239000003546 flue gas Substances 0.000 abstract description 11
- 239000007789 gas Substances 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 description 8
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 238000007599 discharging Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Treating Waste Gases (AREA)
Abstract
The utility model relates to a cement kiln bypass air-bleeding denitration system, which comprises a smoke chamber, a cooling fan, a mixing chamber, a dust collector, an exhaust fan, a chimney, a pump station, a denitration spray gun, a temperature control air pipe and an air inlet pipe; the two ends of the air inlet pipe are respectively connected with the air inlet at the bottom of the mixing chamber and one side of the smoke chamber, the air inlet of the dust collector is connected with the air outlet at the top of the mixing chamber, the air inlet of the exhaust fan is connected with the air outlet of the dust collector, and the air outlet of the exhaust fan is connected with the chimney; the utility model discloses an it comes to carry out denitration treatment in order to reduce its nitrogen oxide concentration that contains to the bypass flue gas to arrange the denitration spray gun between smoke box and mixing chamber, and then ensures that the nitrogen oxide emission from in the chimney exhaust tail gas is up to standard.
Description
Technical Field
The utility model relates to a cement kiln bypass deNOx systems that leaks informaton.
Background
At present, the cement kiln is widely applied to the cooperative disposal of household garbage, solid waste and the like, and a bypass air discharging system is a conventional means for solving the problem that the content of chloride ions in flue gas exceeds the standard; the bypass air release system takes air from one side of the smoke chamber, the air is cooled through the mixing chamber, high chloride ion dust in smoke is collected by using a bag for subsequent treatment, and the generated tail gas is exhausted to the atmosphere through a chimney.
However, the bypass flue gas in the existing bypass air bleeding system is not subjected to denitration treatment, the concentration of nitrogen oxide contained in the bypass flue gas is high, the emission value of the nitrogen oxide at the outlet of a chimney is easy to exceed the standard, the normal production of the cement kiln is further influenced, and the improvement is needed.
SUMMERY OF THE UTILITY MODEL
To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that an ability carries out denitration treatment to the bypass flue gas in order to reduce its nitrogen oxide concentration that contains, and then ensures to reach standard from the nitrogen oxide emission in chimney exhaust tail gas to can adjust denitration reaction temperature with efficiency, the ammonia water quantity of saving, the cement kiln bypass of extension denitration spray gun life denitration system of letting out air of improving denitration reaction.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a cement kiln bypass air-bleeding denitration system is characterized by comprising a smoke chamber, a cooling fan, a mixing chamber, a dust collector, an exhaust fan, a chimney, a pump station, a denitration spray gun, a temperature control air pipe and an air inlet pipe; the two ends of the air inlet pipe are respectively connected with the bottom air inlet of the mixing chamber and one side of the smoke chamber, the air inlet of the dust collector is connected with the top air outlet of the mixing chamber, the air inlet of the exhaust fan is connected with the air outlet of the dust collector, and the air outlet of the exhaust fan is connected with the chimney; the denitration spray gun is arranged on the air inlet pipe or on one side of the air inlet at the bottom of the mixing chamber, the air outlet of the pump station is connected to one side of the bottom of the mixing chamber, the liquid outlet of the pump station is connected with the liquid inlet of the denitration spray gun, one end of the temperature control air pipe is connected to the air inlet pipe and located on the upstream side of the denitration spray gun, and the other end of the temperature control air pipe and the side air inlet of the mixing chamber are connected in parallel to the air outlet of the cooling fan.
Preferably, the denitration device further comprises a thermometer, wherein the thermometer is arranged on the air inlet pipe and is positioned at the downstream side of the denitration spray gun.
Preferably, the air valve is further included and arranged on the temperature control air pipe.
Preferably, the nozzle of the denitration spray gun extends into the air inlet at the bottom of the air inlet pipe or the mixing chamber and is arranged along the axial direction of the air inlet at the bottom of the air inlet pipe or the mixing chamber so that the spraying direction is consistent with the air flow direction.
Preferably, one end of the temperature control air pipe is obliquely downwards inserted on the air inlet pipe and communicated with the interior of the air inlet pipe.
Compared with the prior art, the utility model has the advantages of: the utility model arranges the denitration spray gun between the smoke chamber and the mixing chamber to carry out denitration treatment on the bypass smoke gas so as to reduce the concentration of nitrogen oxide contained in the bypass smoke gas, thereby ensuring that the emission of the nitrogen oxide in the tail gas discharged from the chimney reaches the standard; and send into the air-supply line with the low temperature air that cooling blower produced through accuse temperature tuber pipe in order to adjust denitration reaction temperature, and then improve denitration reaction's efficiency and save the aqueous ammonia quantity, prolonged the life of denitration spray gun simultaneously.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
figure 2 is the utility model discloses a mounting position picture of denitration spray gun and accuse temperature tuber pipe.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and the like in the description of the invention does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To keep the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known parts of the invention has been omitted.
As shown in fig. 1, a cement kiln bypass air-bleeding denitration system comprises a smoke chamber 1, a cooling fan 2, a mixing chamber 3, a dust collector 4, an exhaust fan 5, a chimney 6, a pump station 7, a denitration spray gun 8, a temperature-control air pipe 11 and an air inlet pipe 12; two ends of an air inlet pipe 12 are respectively connected with an air inlet at the bottom of the mixing chamber 3 and one side of the smoke chamber 1 and are connected with an air outlet of the cooling fan 2, an air inlet of the dust collector 4 is connected with an air outlet at the top of the mixing chamber 3, an air inlet of the exhaust fan 5 is connected with an air outlet of the dust collector 4, and an air outlet of the exhaust fan 5 is connected with the chimney 6; the denitration spray gun 8 is arranged on the air inlet pipe 12 or on one side of the air inlet at the bottom of the mixing chamber 3, the air outlet of the pump station 7 is connected to one side of the bottom of the mixing chamber 3, the liquid outlet of the pump station 7 is connected to the liquid inlet of the denitration spray gun 8, one end of the temperature control air pipe 11 is connected to the air inlet pipe 12 and located on the upstream side of the denitration spray gun 8, and the other end of the temperature control air pipe 11 and the side air inlet of the mixing chamber 3 are both connected in parallel to the air outlet of the cooling fan 2.
The utility model provides a cement kiln bypass air release deNOx systems, still includes thermometer 9, and thermometer 9 locates on air-supply line 12 and is located the downstream side of denitration spray gun 8.
The utility model provides a cement kiln bypass air release deNOx systems, still includes blast gate 10, and blast gate 10 is located on accuse temperature tuber pipe 11.
As shown in fig. 2, the nozzle of the denitration lance 8 extends into the air inlet pipe 12 or the bottom air inlet of the mixing chamber 3 and is arranged along the axial direction of the air inlet pipe 12 or the bottom air inlet of the mixing chamber 3 so that the spraying direction is consistent with the air flow direction.
One end of the temperature control air pipe 11 is inserted downwards and slantways on the air inlet pipe 12 and is communicated with the inside of the air inlet pipe 12.
The working principle is as follows: flue gas generated in the flue gas chamber 1 enters the mixing chamber 3 through the air inlet pipe 12, the pump station 7 is started to work so as to respectively convey air and ammonia water to the mixing chamber 3 and the denitration spray gun 8, and then the ammonia water is sprayed out through the nozzle of the denitration spray gun 8, mixed with the flue gas and enters the mixing chamber 3 to perform denitration reaction with the air; starting the cooling fan 2 to work so as to send external low-temperature air into the mixing chamber 3, further reducing the temperature of mixed flue gas in the mixing chamber 3, starting the exhaust fan 5 to work so as to input tail gas after reaction in the mixing chamber 3 into the dust collector 4 for gas-solid separation, discharging separated gas outwards through a chimney 6, and discharging separated solid outwards through a slag discharge port of the dust collector 4; if the thermometer 9 detects that the temperature of the flue gas discharged from the smoke chamber 1 is too high, the air valve 10 can be opened to allow external low-temperature air to enter the air inlet pipe 12 through the temperature-controlled air pipe 11 to reduce the temperature of the flue gas.
The utility model arranges the denitration spray gun 8 between the smoke chamber 1 and the mixing chamber 3 to carry out denitration treatment on the bypass smoke gas so as to reduce the concentration of nitrogen oxide contained in the bypass smoke gas, thereby ensuring that the emission of the nitrogen oxide in the tail gas discharged from the chimney 6 reaches the standard; and the low temperature air that produces cooling blower 2 through accuse temperature tuber pipe 11 is sent into air-supply line 12 in order to adjust denitration reaction temperature, and then improves denitration reaction's efficiency and saves the aqueous ammonia quantity, has prolonged denitration spray gun 8's life simultaneously.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments may be modified or some technical features may be equally replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. A cement kiln bypass air-bleeding denitration system is characterized by comprising a smoke chamber, a cooling fan, a mixing chamber, a dust collector, an exhaust fan, a chimney, a pump station, a denitration spray gun, a temperature control air pipe and an air inlet pipe; the two ends of the air inlet pipe are respectively connected with an air inlet at the bottom of the mixing chamber and one side of the smoke chamber, an air inlet of the dust collector is connected with an air outlet at the top of the mixing chamber, an air inlet of the exhaust fan is connected with an air outlet of the dust collector, and an air outlet of the exhaust fan is connected with a chimney; the denitration spray gun is arranged on the air inlet pipe or on one side of the air inlet at the bottom of the mixing chamber, the air outlet of the pump station is connected to one side of the bottom of the mixing chamber, the liquid outlet of the pump station is connected with the liquid inlet of the denitration spray gun, one end of the temperature control air pipe is connected to the air inlet pipe and located on the upstream side of the denitration spray gun, and the other end of the temperature control air pipe and the side air inlet of the mixing chamber are connected in parallel to the air outlet of the cooling fan.
2. The cement kiln bypass air-bleeding denitration system according to claim 1, further comprising a thermometer provided on the air inlet pipe and located on the downstream side of the denitration lance.
3. The cement kiln bypass air-bleeding denitration system according to claim 1, further comprising an air valve, wherein the air valve is arranged on the temperature control air pipe.
4. The cement kiln bypass air-bleeding denitration system according to claim 1, wherein the nozzle of the denitration lance extends into the air inlet at the bottom of the air inlet pipe or the mixing chamber and is arranged along the axial direction of the air inlet at the bottom of the air inlet pipe or the mixing chamber so that the spraying direction is consistent with the air flow direction.
5. The cement kiln bypass air-bleeding denitration system according to claim 1, wherein one end of the temperature control air pipe is inserted obliquely downwards onto the air inlet pipe and is communicated with the interior of the air inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222512562.7U CN218485600U (en) | 2022-09-22 | 2022-09-22 | Cement kiln bypass denitration system that leaks informaton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222512562.7U CN218485600U (en) | 2022-09-22 | 2022-09-22 | Cement kiln bypass denitration system that leaks informaton |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218485600U true CN218485600U (en) | 2023-02-17 |
Family
ID=85191971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222512562.7U Active CN218485600U (en) | 2022-09-22 | 2022-09-22 | Cement kiln bypass denitration system that leaks informaton |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218485600U (en) |
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2022
- 2022-09-22 CN CN202222512562.7U patent/CN218485600U/en active Active
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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: 303 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee after: Zhongcai International Intelligent Technology Co.,Ltd. Address before: 303 Hanzhongmen street, Gulou District, Nanjing City, Jiangsu Province Patentee before: NANJING KISEN INTERNATIONAL ENGINEERING Co.,Ltd. |