CN115779665A - Fluidized bed granulator tail gas purification system - Google Patents
Fluidized bed granulator tail gas purification system Download PDFInfo
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- CN115779665A CN115779665A CN202310046055.5A CN202310046055A CN115779665A CN 115779665 A CN115779665 A CN 115779665A CN 202310046055 A CN202310046055 A CN 202310046055A CN 115779665 A CN115779665 A CN 115779665A
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- ammonia removal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention provides a tail gas purification system of a fluidized bed granulator, which belongs to the field of granulation tail gas purification and comprises a granulator and a tail gas discharge device, wherein an ammonia removal device is communicated between the granulator and the tail gas discharge device, a purification device is also communicated between the ammonia removal device and the tail gas discharge device, and a purification component containing adsorbates is arranged in the purification device; the ammonia removal device comprises an ammonia removal box body and a spray pipe, a dilute acid containing device is arranged outside the ammonia removal box body, one end of the spray pipe is communicated with the dilute acid containing device, and the other end of the spray pipe is arranged inside the ammonia removal box body. According to the tail gas purification system of the fluidized bed granulator, ammonia is removed from the tail gas to obtain ammonium salt and mixed flue gas containing impurities, the mixed flue gas is further subjected to adsorption and catalytic oxidation treatment through the purification device to obtain clean gas, and the dust is recycled and reused through the recovery device, so that the emission index is improved, and meanwhile, the economic and social benefits are increased.
Description
Technical Field
The invention belongs to the field of granulation tail gas purification, and relates to a tail gas purification system of a fluidized bed granulator.
Background
At present, the water washing technology is mostly adopted for treating the tail gas generated in granulation, the water washing process is shown in fig. 5, the emission concentration of dust and ammonia can be reduced to a certain degree, but the direct discharge characteristic of the water washing process does not reach the standard, and further because a large amount of industrial impurity-containing water vapor is discharged and the exhaust temperature is too low, the smoke diffusion capacity is greatly reduced, the regional pollutant enrichment is caused, the measured concentration is increased, and haze is generated under the condition that the meteorological conditions are proper seriously, the atmospheric pollution treatment and control are mainly PM2.5 and VOCs, and the water washing external exhaust (small liquid drops) contains a large amount of urea and ammonia, and the exhaust gas is mostly emitted to the atmosphere in an aerosol form and is also the main cause of the haze. Therefore, the problem of tail gas treatment by using the water washing technology is serious, and the water washing technology is only a temporary measure. In addition, the same technical problem exists when the water washing technology is applied to the discharge of the process section of the coal-fired boiler of the 'standard-alignment'.
Disclosure of Invention
Based on the problems in the prior art, the invention provides a tail gas purification system of a fluidized bed granulator, wherein granulation tail gas and cooling drum tail gas are combined and then enter an ammonia removal device, or the granulation tail gas and the cooling drum tail gas sequentially enter the ammonia removal device, flue gas treated by the ammonia removal device enters the purification device through a pipeline, gas-solid-liquid purification and separation are carried out in the purification device, and clean gas is obtained and then is discharged.
According to the technical scheme provided by the invention, the tail gas purification system of the fluidized bed granulator comprises the granulator and a tail gas discharge device, wherein an ammonia removal device is communicated and arranged between the granulator and the tail gas discharge device, a purification device is communicated and arranged between the ammonia removal device and the tail gas discharge device, and a purification component containing adsorbates is arranged in the purification device; the ammonia removal device comprises an ammonia removal box body and a spray pipe, a dilute acid containing device is arranged outside the ammonia removal box body, one end of the spray pipe is communicated with the dilute acid containing device, and the other end of the spray pipe is arranged inside the ammonia removal box body.
Preferably, the spray pipe comprises a main spray pipe and a plurality of sub-spray pipes which are communicated with the main spray pipe and are positioned in the ammonia removal box body, the sub-spray pipes positioned in the ammonia removal box body are provided with a first length sub-spray pipe, a second length sub-spray pipe and a third length sub-spray pipe, the lengths of the first length sub-spray pipe, the second length sub-spray pipe and the third length sub-spray pipe are sequentially increased in the direction away from the dilute acid containing device, the sub-spray pipes with the three lengths are all positioned at the same height, and the lengths of the adjacent sub-spray pipes are different.
Preferably, the sub-nozzles in the ammonia removal tank body are repeatedly arranged along the direction from one side to the other side of the arrangement direction of the sub-nozzles, wherein the length of the sub-nozzles is combined as follows: the first length spray pipe, the second length spray pipe, the third length spray pipe and the second length spray pipe are arranged in the spray pipe box; and the two ends of the arrangement direction of the branch spray pipes are the branch spray pipes with the first length.
Preferably, an atomizer is arranged on the end part, far away from the dilute acid containing device, of each branch spray pipe arranged in the ammonia removal box body in a communication mode.
Preferably, purification device includes the purifying box body, and the purifying box body passes through the pipeline intercommunication with removing the ammonia device and is connected, and the top of purifying box body is provided with the clean room to and the purification subassembly that has a plurality of vertical settings in the purifying box body, the top and the clean room intercommunication of purifying the subassembly, the top of clean room sets up the jetting device, and the clean room still is provided with the gas vent.
Preferably, the purification component also has a catalytic oxide thereon.
Preferably, the bottom of the purifying box body is a steel structure, an ash bucket which is positioned at the bottom of the purifying box body and is communicated with the purifying box body is arranged on the steel structure, and a recovery tank is arranged at the bottom of the ash bucket; and a water spraying device is arranged on the purification device, and a water spraying port of the water spraying device is arranged towards the inner side wall of the ash bucket.
Preferably, an induced draft fan is arranged between the purification device and the tail gas discharge device in a communicated mode, an air inlet end of the induced draft fan is communicated with an air outlet in the cleaning chamber, and an air outlet end of the induced draft fan is communicated with the tail gas discharge device.
Preferably, the branch spray pipes in the ammonia removal box body are distributed in a sine shape, so that a part close to the dilute acid containing device and a part far away from the dilute acid containing device in the ammonia removal box body are respectively distributed with a small number of atomizers, and a middle part of the ammonia removal device is distributed with a large number of atomizers.
Preferably, the diluted acid containing device is internally pre-stored with a prepared diluted acid solution, the diluted acid solution is sent into the atomizer in the ammonia removal box body through the main spray pipe and the branch spray pipe, and protective gas such as carbon dioxide is compressed to atomize the diluted acid solution to form micron-sized micro fog drops.
Compared with the prior art, the tail gas purification system of the fluidized bed granulator has the following advantages:
1. the tail gas purification system of the fluidized bed granulator disclosed by the invention is used for removing ammonia from the granulation tail gas and the cooling roller tail gas through the dilute acid in the dilute acid containing device to obtain ammonium salt, and further carrying out adsorption and catalytic oxidation treatment on mixed flue gas containing impurities in the ammonia removal device through the purification device to obtain filtered clean gas.
2. The tail gas purification system of the fluidized bed granulator is provided with a matched recovery tank device, and the recovery tanks are correspondingly arranged at the bottoms of the ammonia removal device and the purification device, so that the purified dust can be effectively recovered and reused, and the benefit is increased.
Drawings
FIG. 1 is a schematic view of the tail gas purification system of a fluidized bed granulator according to the present invention.
Fig. 2 is a front view of the ammonia removal device of fig. 1.
Fig. 3 is a top view of the ammonia removal device of fig. 1.
Fig. 4 is a front view of the purification apparatus of fig. 1.
Fig. 5 is a schematic diagram of a process of washing tail gas of a pelletizer in the prior art.
Reference numerals in the drawings:
1. a granulator; 2. a cooler;
3. an ammonia removal device; 31. a dilute acid containment device; 32. an ammonia removal box body; 33. a nozzle 331, a main nozzle 332, a branch nozzle; 34. an atomizer;
4. a purification device; 41. a purification box 411, an air inlet; 42. clean room, 421, exhaust port; 43. a purification assembly, 431, a suspension assembly; 44. a blowing device; 45. a steel structure; 46. an ash hopper; 47. a recovery tank; 5. an induced draft fan; 6. a tail gas discharge device; 7. and (7) a water washing device.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding of the embodiments of the present invention, the following detailed description will be given by way of example with reference to the accompanying drawings, and the embodiments are not limited to the embodiments of the present invention.
The specific implementation mode of the tail gas purification system of the fluidized bed granulator is shown in combination with fig. 1-4.
Fig. 1 shows a schematic diagram of a purification process of a tail gas purification system of a fluidized bed granulator, the tail gas purification system of the fluidized bed granulator comprises a granulator 1 and a tail gas discharge device 6, an ammonia removal device 3 is arranged between the granulator 1 and the tail gas discharge device 6 in a communicating manner, a purification device 4 is arranged between the ammonia removal device 3 and the tail gas discharge device 6 in a communicating manner, and a purification component 43 containing adsorbate (not shown in the figure) is arranged in the purification device 4.
Wherein, as shown in fig. 2, the ammonia removal device 3 comprises an ammonia removal box body 32 and a spray pipe 33, a dilute acid containing device 31 is arranged outside the ammonia removal box body 32, one end of the spray pipe 33 is communicated with the dilute acid containing device 31, and the other end of the spray pipe 33 is arranged inside the ammonia removal box body 32. The spray pipe 33 comprises a main spray pipe 331 and a plurality of branch spray pipes 332 which are communicated with the main spray pipe 331 and are positioned inside the ammonia removal tank body 32, wherein the height of the branch spray pipes 332 communicated with the ammonia removal tank body 32 is positioned at the middle upper part of the ammonia removal tank body 32, so that the whole ammonia removal device 3 can be filled with dilute acid solution during spraying to better remove ammonia; the branch spray pipes 332 in the ammonia removal tank 32 are provided with a first length branch spray pipe, a second length branch spray pipe and a third length branch spray pipe, the lengths of the first length branch spray pipe, the second length branch spray pipe and the third length branch spray pipe are sequentially increased in the direction away from the dilute acid containing device 31, the branch spray pipes 332 with the three lengths are all located at the same height, and the lengths of the adjacent branch spray pipes 332 are different.
In a preferred embodiment, as shown in FIG. 3, the sub-lances 332 in the ammonia removal tank 32 are arranged in a repeating pattern of combinations of the lengths of the sub-lances 332 in a side-to-side direction of the arrangement of the sub-lances 332: the first length branch spray pipe, the second length branch spray pipe, the third length branch spray pipe and the second length branch spray pipe; and both ends of the arrangement direction of the branch nozzles 332 are the branch nozzles 332 of the first length.
Furthermore, an atomizer 34 is connected to the end of each branched nozzle 332 far from the dilute acid containing device 31, which is arranged in the ammonia removal tank 32.
As shown in fig. 3, three groups of "first length branch nozzles, second length branch nozzles, third length branch nozzles, and second length branch nozzles" branch nozzles 332 are sequentially arranged, and finally, the branch nozzles 332 with the first length are arranged at the end part close to the ammonia removal tank 32, so as to obtain the arrangement of the branch nozzles in the plan view of fig. 3, it can also be seen that the branch nozzles 332 in the ammonia removal tank 32 are distributed in a sine shape, so that the parts close to the dilute acid containing device 31 and the parts far away from the dilute acid containing device 31 in the ammonia removal tank 32 are both distributed with a smaller number of atomizers 34, and the middle part of the ammonia removal device 3 is distributed with a larger number of atomizers 34, thereby facilitating adjustment of the spraying amount on both sides, so that each position in the whole ammonia removal tank 32 is filled with dilute acid solution, and thus ammonia in the tail gas is sufficiently dissolved. In other embodiments, the sub-spray pipes can be distributed in a cosine shape and the like, so that the atomizer can uniformly spray the dilute acid to the whole ammonia removal box body.
In the specific operation of the tail gas purification system of the fluidized bed granulator, a prepared dilute acid solution, such as a saturated carbonic acid solution or a 5% sulfuric acid solution, is pre-stored in the dilute acid containing device 31, and is sent to the atomizer 34 in the ammonia removal tank 32 through the main nozzle 331 and the branch nozzle 332, and the protective gas, such as carbon dioxide, is compressed to atomize the dilute acid solution, so as to form micro fog drops with micron-sized size, wherein the fog drops have a large specific surface area, and can dissolve and react with ammonia in the granulation tail gas entering the ammonia removal tank 32 and the tail gas of the cooler 2 to generate ammonium salts, such as ammonium bicarbonate or ammonium sulfate. In the flowing process of the tail gas, partial liquid drops are gradually dehydrated to become salt particles and urea dust, and the temperature of the tail gas is reduced. The ammonium salt after the reaction has two directions: a part of the heavy particles fall into a recovery tank (not shown in the figure) at the bottom of the ammonia removal tank body 32 and are recycled by warm water washing; the other part of the fine particles enters the subsequent purification device 4 for further treatment under the driving of the airflow.
Further, as shown in fig. 4, the purifying device 4 includes a purifying box 41, the purifying box 41 is connected with the ammonia removing device 3 through a pipeline, a cleaning chamber 42 is arranged on the top of the purifying box 41, and a plurality of vertically arranged purifying assemblies 43 are arranged in the purifying box 41, for making the drawing neat, only one purifying assembly 43 is shown in fig. 4, and the purifying assemblies 43 are arranged in the purifying box 41 and can be fully combined with the tail gas entering into the purifying box 41; the top of the cleaning assembly 43 is communicated with the cleaning chamber 42, wherein a hanging assembly 431 is further provided in the top cleaning chamber 42 of the cleaning assembly 43 to fixedly hang the top of the cleaning assembly 43 in the cleaning chamber 42, a blowing device 44 is further provided at the top of the cleaning chamber 42, and an exhaust port 421 is further provided in the cleaning chamber 42. The purification module 43 has thereon a catalytic oxide (not shown) in addition to the adsorbent. The bottom of the purification box body 41 is a steel structure 45, the steel structure 45 is provided with an ash bucket 46 which is positioned at the bottom of the purification box body 41 and is communicated with the purification box body 41, and the bottom of the ash bucket 46 is also provided with a recovery tank 47; and a water spraying device is also arranged on the purifying device 4, and a water spraying port of the water spraying device is arranged towards the inner side wall of the ash bucket 46.
In another embodiment, an induced draft fan 5 is further arranged between the purification device 4 and the tail gas discharge device 6 in a communicating manner, an air inlet end of the induced draft fan 5 is communicated with the air outlet 421 on the clean room 42, and an air outlet end of the induced draft fan 5 is communicated with the tail gas discharge device 6.
Specifically, as shown in fig. 4, the mixed flue gas containing fine particles, which is obtained after the granulation tail gas and the tail gas of the cooler 2 are treated by the ammonia removal device 3, enters the purifying box 41 through the pipeline through the air inlet 411 of the purifying box 41, the urea dust and ammonium salt particles contained in the entering flue gas are subjected to gas-solid separation by the purifying component 43, and the dust particles are trapped on the outer surface of the purifying component 43. The purification component 43 has adsorbate and catalytic oxide thereon, and captures or catalytically oxidizes the remaining ammonia in the mixed exhaust gas into H by adsorption function and catalytic oxidation function 2 O and N 2 Further, the filtered clean air is introduced into the clean room, and is sent from the exhaust port 421 of the clean room 42 to the exhaust gas discharge device 6 such as a chimney through the induced draft fan 5 to be discharged.
And, as shown in fig. 4, after the mixed flue gas is adsorbed and catalytically oxidized by the purifying assembly 43 in the purifying box 41, the dust collected on the surface of the purifying assembly 43 is gradually thickened, and when the mixed flue gas reaches a certain thickness, the blowing device 44 is opened to blow downwards to perform reverse ash removal, so that the dust on the surface of the purifying assembly 43 falls downwards into the ash hopper 46 at the bottom, and thus the purifying assembly 43 can be regenerated. The dust in the ash bucket 46 is further sprayed and washed by a water spraying device with a water spraying opening aligned with the inner side wall of the ash bucket 46 and then enters the recycling tank 47, and when the collected liquid in the recycling tank 47 reaches a certain concentration, the collected liquid is pumped to a next device for recycling.
The tail gas purification system adopts a leading semi-dry process for ammonia elimination and a dry process for dust purification, pollutants in tail gas are removed through double treatment, a gas outlet has no smoke with liquid, no smoke trailing and good apparent effect, the emission index is higher than the national standard, meanwhile, the dust is effectively recycled, and the annual increase of income is considerable.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. A tail gas purification system of a fluidized bed granulator comprises a granulator (1) and a tail gas discharge device (6), and is characterized in that an ammonia removal device (3) is communicated and arranged between the granulator (1) and the tail gas discharge device (6), a purification device (4) is communicated and arranged between the ammonia removal device (3) and the tail gas discharge device (6), and a purification assembly (43) containing adsorbates is arranged in the purification device (4);
remove ammonia device (3) including removing ammonia box (32) and spray tube (33), the outside of removing ammonia box (32) is provided with diluted acid accommodate device (31), and the one end and the diluted acid accommodate device (31) intercommunication of spray tube (33) are connected, and the other end of spray tube (33) sets up in the inside of removing ammonia box (32).
2. The tail gas purification system of the fluidized bed granulator according to claim 1, wherein the spray pipes (33) comprise main spray pipes (331) and a plurality of branch spray pipes (332) which are communicated with the main spray pipes (331) and are positioned inside the ammonia removal tank body (32), the branch spray pipes (332) positioned inside the ammonia removal tank body (32) are provided with a first length branch spray pipe (332), a second length branch spray pipe (332) and a third length branch spray pipe (332) which are sequentially increased in length in the direction away from the dilute acid containing device (31), the branch spray pipes (332) with three lengths are all positioned at the same height, and the lengths of the adjacent branch spray pipes (332) are different.
3. The tail gas purification system of the fluidized bed granulator according to claim 2, wherein the branch nozzles (332) in the ammonia removal tank (32) are arranged repeatedly along the length combination of the following branch nozzles (332) in the direction from one side to the other side of the arrangement direction of the branch nozzles (332): the first length branch spray pipe, the second length branch spray pipe, the third length branch spray pipe and the second length branch spray pipe; and both ends of the arrangement direction of the branch nozzles (332) are branch nozzles (332) with a first length.
4. The tail gas purification system of the fluidized bed granulator according to claim 3, wherein an atomizer (34) is communicated with the end of each spray pipe (332) arranged in the ammonia removal box body (32) far away from the dilute acid containing device (31).
5. The tail gas purification system of the fluid bed granulator according to claim 1, wherein the purification device (4) comprises a purification box body (41), the purification box body (41) is connected with the ammonia removal device (3) through a pipeline in a communication manner, a cleaning chamber (42) is arranged at the top of the purification box body (41), a plurality of vertically arranged purification assemblies (43) are arranged in the purification box body (41), the top of each purification assembly (43) is communicated with the cleaning chamber (42), a blowing device (44) is further arranged at the top of the cleaning chamber (42), and an exhaust port (421) is further arranged in the cleaning chamber (42).
6. A fluid bed granulator off-gas cleanup system as claimed in claim 5, characterized in that the cleanup module (43) has catalytic oxide.
7. The tail gas purification system of the fluidized bed granulator according to claim 6, wherein the bottom of the purification box body (41) is a steel structure (45), the steel structure (45) is provided with an ash bucket (46) which is positioned at the bottom of the purification box body (41) and is communicated with the purification box body (41), and the bottom of the ash bucket (46) is further provided with a recovery tank (47); and a water spraying device is arranged on the purification device (4), and a water spraying port of the water spraying device is arranged towards the inner side wall of the ash bucket (46).
8. The tail gas purification system of the fluidized bed granulator according to claim 6, wherein an induced draft fan (5) is arranged between the purification device (4) and the tail gas discharge device (6) in a communicating manner, an air inlet end of the induced draft fan (5) is communicated with an air outlet (421) on the clean room (42), and an air outlet end of the induced draft fan (5) is communicated with the tail gas discharge device (6).
9. The tail gas purification system of the fluidized bed granulator according to claim 3, wherein the spray pipes in the ammonia removal box body are distributed in a sine shape, so that a part of the ammonia removal box body close to the dilute acid containing device and a part of the ammonia removal box body far away from the dilute acid containing device are distributed with a small number of atomizers, and a middle part of the ammonia removal device is distributed with a large number of atomizers.
10. The tail gas purification system of the fluidized bed granulator according to claim 6, wherein the dilute acid containing device is pre-stored with a prepared dilute acid solution, the dilute acid solution is sent to the atomizer in the ammonia removal box body through the main spray pipe and the branch spray pipe, and the protective gas is compressed to atomize the dilute acid solution to form micro mist droplets with micron-sized size.
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| CN202310046055.5A CN115779665B (en) | 2023-01-30 | 2023-01-30 | Tail gas purifying system of fluidized bed granulator |
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| CN202310046055.5A CN115779665B (en) | 2023-01-30 | 2023-01-30 | Tail gas purifying system of fluidized bed granulator |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008018318U1 (en) * | 2008-02-27 | 2012-11-27 | Basf Corporation | Copper-Cha-zeolite catalysts |
| CN202933617U (en) * | 2012-09-21 | 2013-05-15 | 中国五环工程有限公司 | Ammoniated tail gas treatment system for fluidized bed large granular urea device |
| WO2020174559A1 (en) * | 2019-02-26 | 2020-09-03 | 三菱重工エンジニアリング株式会社 | Off gas processing device and fertilizer production plant provided with this off gas processing device |
| CN112221333A (en) * | 2020-09-25 | 2021-01-15 | 山东圣大环保工程有限公司 | Ammonia-containing waste gas absorption, purification and recovery device |
| CN112704971A (en) * | 2021-03-29 | 2021-04-27 | 上海境业环保能源科技股份有限公司 | Granulation tower total pollution treatment system |
| WO2022095148A1 (en) * | 2020-11-03 | 2022-05-12 | 江南环保集团股份有限公司 | Method for applying membrane separation apparatus to ammonia desulfurization |
| CN114849434A (en) * | 2022-05-09 | 2022-08-05 | 福建龙净环保股份有限公司 | Prilling tower system and tail gas treatment device |
| CN115090091A (en) * | 2022-06-28 | 2022-09-23 | 光大环保技术研究院（深圳）有限公司 | Device and method for removing escaped ammonia in waste incineration flue gas by using citric acid |
-
2023
- 2023-01-30 CN CN202310046055.5A patent/CN115779665B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008018318U1 (en) * | 2008-02-27 | 2012-11-27 | Basf Corporation | Copper-Cha-zeolite catalysts |
| CN202933617U (en) * | 2012-09-21 | 2013-05-15 | 中国五环工程有限公司 | Ammoniated tail gas treatment system for fluidized bed large granular urea device |
| WO2020174559A1 (en) * | 2019-02-26 | 2020-09-03 | 三菱重工エンジニアリング株式会社 | Off gas processing device and fertilizer production plant provided with this off gas processing device |
| CN112221333A (en) * | 2020-09-25 | 2021-01-15 | 山东圣大环保工程有限公司 | Ammonia-containing waste gas absorption, purification and recovery device |
| WO2022095148A1 (en) * | 2020-11-03 | 2022-05-12 | 江南环保集团股份有限公司 | Method for applying membrane separation apparatus to ammonia desulfurization |
| CN112704971A (en) * | 2021-03-29 | 2021-04-27 | 上海境业环保能源科技股份有限公司 | Granulation tower total pollution treatment system |
| CN114849434A (en) * | 2022-05-09 | 2022-08-05 | 福建龙净环保股份有限公司 | Prilling tower system and tail gas treatment device |
| CN115090091A (en) * | 2022-06-28 | 2022-09-23 | 光大环保技术研究院（深圳）有限公司 | Device and method for removing escaped ammonia in waste incineration flue gas by using citric acid |
Non-Patent Citations (1)
| Title |
|---|
| 橡胶工业原材料与装备简明手册编审委员会, 北京理工大学出版社 * |
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