CN219482212U - Ammonia gas treatment equipment for cement kiln tail waste gas - Google Patents
Ammonia gas treatment equipment for cement kiln tail waste gas Download PDFInfo
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- CN219482212U CN219482212U CN202320350393.3U CN202320350393U CN219482212U CN 219482212 U CN219482212 U CN 219482212U CN 202320350393 U CN202320350393 U CN 202320350393U CN 219482212 U CN219482212 U CN 219482212U
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Abstract
The utility model relates to the technical field of ammonia gas treatment, and discloses ammonia gas treatment equipment for cement kiln tail waste gas, which comprises an ammonia gas decomposition catalyst configuration, a stirring and mixing device, a pumping force conveying system, a spraying system, an ammonia gas detection system and an automatic control system, wherein the ammonia gas decomposition catalyst configuration is connected with a kiln tail waste gas chimney through the pumping force conveying system, the spraying system, the ammonia gas detection system and the automatic control system are all arranged at proper positions of the kiln tail waste gas chimney, and the stirring and mixing device is arranged at the top of the ammonia gas decomposition catalyst configuration; the ammonia decomposition catalyst configuration includes two catalyst storage tanks. In the utility model, the proper catalyst concentration is selected according to the concentration of the tail gas ammonia gas, and the spraying amount of the decomposition catalyst is automatically controlled according to the emission index, so that the ultra-low emission standard of the ammonia gas in the ultra-low emission standard of the atmospheric pollutants in the cement industry can be realized, the investment is low, and no secondary pollution is caused.
Description
Technical Field
The utility model relates to the technical field of ammonia gas treatment, in particular to ammonia gas treatment equipment for cement kiln tail waste gas.
Background
The promulgation of the emission standard of the atmospheric pollutants in the cement industry is implemented, so that cement enterprises realize the ultra-low emission of nitrogen oxides, and most cement enterprises currently adopt a staged combustion+SNCR system. Because the SNCR system ammonia water is not completely reacted, the emission of ammonia in the waste gas exceeds the standard; carbide slag cement production line, because of the specificity of raw materials: calcium nitride generated in the dry method carbide slag preparation process can generate ammonia after absorbing moisture, so that the ammonia concentration in the carbide slag cement kiln waste gas exceeds the standard, and the ammonia emission concentration in the waste gas is high by adding the superposition of ammonia escape of an SNCR system. The detection of partial carbide slag cement kiln exhaust gas shows that the ammonia concentration in the exhaust gas can reach 98ppm, and the ammonia concentration is about 75mg/Nm after conversion 3 Is far larger than ammonia emission less than or equal to 8mg/Nm in the ultra-low emission standard of atmospheric pollutants in the cement industry 3 . The treatment of ammonia in the exhaust gas is imperative.
Traditional ammonia gas treatment scheme: the water washing method, the acid washing method and the like have large investment and secondary pollution. With the further improvement of the national requirements on environmental protection, cement enterprises are urgently required to be an ammonia gas treatment scheme with little investment and no secondary pollution and can stably operate for a long time.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides ammonia gas treatment equipment for cement kiln tail waste gas.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the ammonia gas treatment equipment for the cement kiln tail waste gas comprises an ammonia gas decomposition catalyst configuration, a stirring and mixing device, a pumping force conveying system, a spraying system, an ammonia gas detection system and an automatic control system, wherein the ammonia gas decomposition catalyst configuration is connected with a kiln tail waste gas chimney through the pumping force conveying system, the spraying system, the ammonia gas detection system and the automatic control system are all arranged at proper positions of the kiln tail waste gas chimney, and the stirring and mixing device is arranged at the top of the ammonia gas decomposition catalyst configuration;
the ammonia decomposition catalyst configuration comprises two catalyst storage tanks, wherein one catalyst storage tank is a low-concentration catalyst aqueous solution, and the other catalyst storage tank is a high-concentration catalyst aqueous solution.
As a further description of the above technical solution:
the pump force conveying system comprises a manual valve, an electromagnetic valve, a flow valve, a conveying pump, a catalyst conveying pipeline and an electric control system, wherein the manual valve, the electromagnetic valve, the flow valve and the conveying pump are all arranged outside the catalyst conveying pipeline, the electromagnetic valve, the flow valve and the conveying pump are all electrically connected with the electric control system, one end of the catalyst conveying pipeline is communicated with a catalyst storage tank, and the other end of the catalyst conveying pipeline is communicated with a kiln tail waste gas chimney.
As a further description of the above technical solution:
the spraying system can be used for uniformly arranging four to six atomization spray guns at the proper position of the kiln tail waste gas chimney according to the diameter of the kiln tail waste gas chimney, and is connected with a compressed air pipeline.
As a further description of the above technical solution:
the ammonia gas detection system is arranged at a proper position, which is higher than the installation position of the spraying system by more than 20 meters, of the kiln tail waste gas chimney.
As a further description of the above technical solution:
the pump force conveying system, the spraying system and the ammonia gas detecting system are all connected with the automatic control system.
The utility model has the following beneficial effects:
according to the utility model, the catalyst in the ammonia decomposition catalyst configuration is mixed through the stirring and mixing device, then the uniformly mixed catalyst is conveyed to the spraying system arranged at a proper position of a kiln tail waste gas chimney through the pumping conveying system, atomized and fully contacted with waste gas, so that the effective decomposition of ammonia in the waste gas is realized, the ammonia value is detected in real time through the ammonia detector and fed back to the automatic control system, and finally continuous and stable operation under the preset ammonia emission concentration index is realized, the investment is low, and no secondary pollution is caused.
Drawings
FIG. 1 is a schematic flow chart of a treatment technology of ammonia gas treatment equipment for cement kiln tail waste gas;
FIG. 2 is a schematic diagram of a spray system of an ammonia gas treatment device for cement kiln tail waste gas treatment technology.
Legend description:
1. preparing an ammonia decomposition catalyst; 2. a stirring and mixing device; 3. a manual valve; 4. an electromagnetic valve; 5. a flow valve; 6. a transfer pump; 7. a catalyst delivery conduit; 8. an ammonia gas detector; 9. a kiln tail waste gas chimney; 10. a compressed air conduit; 11. an atomizing spray gun.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, one embodiment provided by the present utility model is: the ammonia gas treatment equipment for the cement kiln tail waste gas comprises an ammonia gas decomposition catalyst configuration 1, a stirring and mixing device 2, a pumping force conveying system, a spraying system, an ammonia gas detection system and an automatic control system, wherein the ammonia gas decomposition catalyst configuration 1 is connected with a kiln tail waste gas chimney 9 through the pumping force conveying system, the spraying system, the ammonia gas detection system and the automatic control system are all arranged at proper positions of the kiln tail waste gas chimney 9, and the stirring and mixing device 2 is arranged at the top of the ammonia gas decomposition catalyst configuration 1;
the ammonia decomposition catalyst configuration 1 comprises two catalyst storage tanks, wherein one catalyst storage tank is a low-concentration catalyst aqueous solution, the other catalyst storage tank is a high-concentration catalyst aqueous solution, the catalyst in the ammonia decomposition catalyst configuration 1 is mixed through a stirring and mixing device 2, then the uniformly mixed catalyst is conveyed to a spraying system arranged at a proper position of a kiln tail waste gas chimney 9 through a pumping conveying system, the atomized catalyst is fully contacted with waste gas, the effective decomposition of ammonia in the waste gas is realized, the ammonia value is detected in real time through an ammonia detector 8 and fed back to an automatic control system, the continuous and stable operation under the preset ammonia emission concentration index is finally realized, the investment is low, no secondary pollution is caused, in order to adapt to the large fluctuation of ammonia concentration, two concentration grades are considered, and under the premise of ensuring the ultralow emission of ammonia, the operation cost is lowest by using the aqueous solution catalyst storage tank with lower catalyst concentration under normal conditions; when the ammonia concentration is increased more, the aqueous solution catalyst storage tank with larger catalyst concentration is used, and under the premise of ensuring the ultralow emission of ammonia, excessive vapor condensation and sinking are prevented.
The pump force conveying system comprises a manual valve 3, an electromagnetic valve 4, a flow valve 5, a conveying pump 6, a catalyst conveying pipeline 7 and an electric control system, wherein the manual valve 3, the electromagnetic valve 4, the flow valve 5 and the conveying pump 6 are all arranged outside the catalyst conveying pipeline 7, the electromagnetic valve 4, the flow valve 5 and the conveying pump 6 are electrically connected with the electric control system, one end of the catalyst conveying pipeline 7 is communicated with a catalyst storage tank, the other end of the catalyst conveying pipeline 7 is communicated with a kiln tail waste gas chimney 9, the spray system can be used for conveying the mixed catalyst to the spray system, the spray system can be used for uniformly arranging four to six rods of atomizing spray guns 11 at the proper position of the kiln tail waste gas chimney 9 according to the diameter of the kiln tail waste gas chimney 9 and is connected with a compressed air pipeline 10, the catalyst is conveyed to the spray system through the pump force conveying system, after the catalyst is atomized, the catalyst is fully contacted with waste gas, the ammonia gas is effectively decomposed, the ultralow emission of ammonia gas is realized, an ammonia gas detection system is installed at a proper position above 20 m higher than the installation position of the spray system, the automatic control system is used for automatically controlling the ammonia gas emission concentration or emission, the automatic control system is used for automatically controlling the emission of the ammonia gas, the automatic control system is controlled to be provided, the automatic control system is controlled according to the real-time, the expected emission control system is controlled, the real-time control system is controlled, and the emission is adjusted according to the expected, and the real-time control system is controlled.
Working principle: the catalyst in the ammonia decomposition catalyst configuration 1 is mixed through the stirring and mixing device 2, then the uniformly mixed catalyst is conveyed to a spraying system arranged at a proper position of a kiln tail waste gas chimney 9 through a pumping conveying system, atomized and fully contacted with waste gas, so that the effective decomposition of ammonia in the waste gas is realized, the ammonia value is detected in real time through an ammonia detector 8 and fed back to an automatic control system, and finally continuous and stable operation under the preset ammonia emission concentration index is realized, the investment is low, and no secondary pollution is caused.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (5)
1. The utility model provides an ammonia treatment equipment of cement kiln tail waste gas, includes ammonia decomposition catalyst configuration (1), stirring mixing arrangement (2), pump power conveying system, spraying system, ammonia detecting system and automatic control system, its characterized in that: the ammonia gas decomposition catalyst configuration (1) is connected with a kiln tail waste gas chimney (9) through a pumping force conveying system, the spraying system, the ammonia gas detection system and the automatic control system are all arranged at proper positions of the kiln tail waste gas chimney (9), and a stirring and mixing device (2) is arranged at the top of the ammonia gas decomposition catalyst configuration (1);
the ammonia decomposition catalyst configuration (1) comprises two catalyst storage tanks, wherein one catalyst storage tank is a low-concentration catalyst aqueous solution, and the other catalyst storage tank is a high-concentration catalyst aqueous solution.
2. An ammonia gas abatement apparatus for cement kiln tail gas as defined in claim 1, wherein: the pump force conveying system comprises a manual valve (3), an electromagnetic valve (4), a flow valve (5), a conveying pump (6), a catalyst conveying pipeline (7) and an electric control system, wherein the manual valve (3), the electromagnetic valve (4), the flow valve (5) and the conveying pump (6) are all arranged outside the catalyst conveying pipeline (7), the electromagnetic valve (4), the flow valve (5) and the conveying pump (6) are all electrically connected with the electric control system, one end of the catalyst conveying pipeline (7) is communicated with a catalyst storage tank, and the other end of the catalyst conveying pipeline (7) is communicated with a kiln tail waste gas chimney (9).
3. An ammonia gas abatement apparatus for cement kiln tail gas as defined in claim 1, wherein: the spraying system can be used for uniformly arranging four to six atomization spray guns (11) at the proper positions of the kiln tail waste gas chimney (9) according to the diameter of the kiln tail waste gas chimney (9) and is connected with a compressed air pipeline (10).
4. An ammonia gas abatement apparatus for cement kiln tail gas as defined in claim 1, wherein: the ammonia gas detection system comprises an ammonia gas detector (8), and the ammonia gas detector (8) is arranged at a proper position, which is higher than the installation position of the spraying system by 20 meters, of a kiln tail waste gas chimney (9).
5. An ammonia gas abatement apparatus for cement kiln tail gas as defined in claim 1, wherein: the pump force conveying system, the spraying system and the ammonia gas detecting system are all connected with the automatic control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320350393.3U CN219482212U (en) | 2023-03-01 | 2023-03-01 | Ammonia gas treatment equipment for cement kiln tail waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320350393.3U CN219482212U (en) | 2023-03-01 | 2023-03-01 | Ammonia gas treatment equipment for cement kiln tail waste gas |
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| Publication Number | Publication Date |
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| CN219482212U true CN219482212U (en) | 2023-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320350393.3U Active CN219482212U (en) | 2023-03-01 | 2023-03-01 | Ammonia gas treatment equipment for cement kiln tail waste gas |
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| CN (1) | CN219482212U (en) |
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2023
- 2023-03-01 CN CN202320350393.3U patent/CN219482212U/en active Active
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