CN218653742U - Double-tower production device for absorbing ammonia-containing tail gas and recovering ammonia water - Google Patents
Double-tower production device for absorbing ammonia-containing tail gas and recovering ammonia water Download PDFInfo
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- CN218653742U CN218653742U CN202222705001.9U CN202222705001U CN218653742U CN 218653742 U CN218653742 U CN 218653742U CN 202222705001 U CN202222705001 U CN 202222705001U CN 218653742 U CN218653742 U CN 218653742U
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Abstract
The utility model discloses a production device for recovering ammonia water by absorbing ammonia-containing tail gas by double towers, which comprises a first absorption tower, wherein the outlet at the bottom of the first absorption tower is connected with the inlet of a first circulating pump; the top inlet of the first ammonia water recycling tank is connected with the outlet of the first circulating pump, and the bottom outlet of the first ammonia water recycling tank is connected with the inlet of the second circulating pump; the inlet of the first heat exchanger is connected with the outlet of the second circulating pump, and the outlet of the first heat exchanger is connected with the inlet at the top of the first absorption tower through a first connecting pipeline; an inlet at the lower part of the second absorption tower is connected with an outlet at the top part of the first absorption tower, and an outlet at the bottom part of the second absorption tower is connected with an inlet of a third circulating pump; and the top inlet of the second ammonia water recycling tank is connected with the outlet of the third circulating pump, and the bottom outlet of the second ammonia water recycling tank is connected with the inlet of the fourth circulating pump. Reasonable structure, easy operation has reduced ammonia pollution, environmental protection, and the aqueous ammonia recycle can save manufacturing cost.
Description
Technical Field
The utility model relates to a apparatus for producing field, concretely relates to double tower absorbs apparatus for producing that contains ammonia tail gas recovery aqueous ammonia.
Background
Ammonia gas widely exists in life, industrial and agricultural production, is very active in the atmosphere, is easily combined with other substances in the atmosphere to generate harmful substances such as photochemical smog, absorbable particles and the like, and can cause serious pollution to the environment if the ammonia gas is not treated well. The human body also has symptoms such as dizziness, nausea, asphyxia and vomit after ammonia poisoning. The ammonia pollution is one of the serious problems facing to the atmosphere and water environment in China, and the development of a production device for treating and recycling ammonia-containing tail gas with high efficiency and economy is urgently needed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned defect or not enough among the prior art, it is expected to provide a production facility that ammonia pollution has been reduced to ammonia-containing tail gas recovery aqueous ammonia to double tower absorption, environmental protection, and the aqueous ammonia recycle can save manufacturing cost.
According to the technical scheme provided by the embodiment of the utility model, the production device for recovering ammonia water by absorbing ammonia-containing tail gas by double towers comprises a first absorption tower, wherein the bottom outlet of the first absorption tower is connected with the inlet of a first circulating pump; the top inlet of the first ammonia water recycling tank is connected with the outlet of the first circulating pump, and the bottom outlet of the first ammonia water recycling tank is connected with the inlet of the second circulating pump; the inlet of the first heat exchanger is connected with the outlet of the second circulating pump, and the outlet of the first heat exchanger is connected with the inlet at the top of the first absorption tower through a first connecting pipeline; an inlet at the lower part of the second absorption tower is connected with an outlet at the top part of the first absorption tower, and an outlet at the bottom part of the second absorption tower is connected with an inlet of a third circulating pump; the top inlet of the second ammonia water recycling tank is connected with the outlet of the third circulating pump, and the bottom outlet of the second ammonia water recycling tank is connected with the inlet of a fourth circulating pump; and the inlet of the second heat exchanger is connected with the outlet of the fourth circulating pump, and the outlet of the second heat exchanger is connected with the inlet at the top of the second absorption tower through a second connecting pipeline. The second absorption tower further comprises a third heat exchanger, and an inlet of the third heat exchanger is connected with an outlet at the top of the second absorption tower. And a first ammonia water recycling extraction pipe is connected between the first circulating pump and the first heat exchanger. And a second ammonia water recycling production pipe is connected between the third circulating pump and the second heat exchanger. The third heat exchanger is equipped with a condensate tank, and the outlet of the third heat exchanger is connected with a VOC device. And the first absorption tower and the second absorption tower are both connected with desalted water valves.
To sum up, the utility model has the advantages that: reasonable structure, easy operation has reduced ammonia pollution, environmental protection, and the aqueous ammonia recycle can save manufacturing cost.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 is a schematic structural diagram of the present invention.
Reference numbers in the figures: 1. a first absorption tower; 2. a first circulation pump; 3. a first ammonia water recycling tank; 4. a second circulation pump; 5. a first heat exchanger; 6. a second absorption tower; 7. a third circulation pump; 8. a second ammonia water recycling tank; 9. a fourth circulation pump; 10. a second heat exchanger; 11. a third heat exchanger; 12. a first connecting conduit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model provides a double tower absorbs apparatus for producing that contains ammonia tail gas recovery aqueous ammonia, as shown in figure 1, still includes third heat exchanger 11, 11 imports of third heat exchanger with 6 top exports of second absorption tower link to each other, and 11 imports of third heat exchanger link to each other with 6 top exports of second absorption tower, 5 imports of first heat exchanger link to each other with 4 exports of second circulating pump, and 10 imports of second heat exchanger link to each other with 9 exports of fourth circulating pump because absorb the aqueous ammonia for exothermic reaction, need in time remove the heat, cool down the aqueous ammonia, increase the adsorption capacity of water to the ammonia.
As shown in fig. 1, a first ammonia water recycling production pipe is connected between the first circulation pump 2 and the first heat exchanger 5. And a second ammonia water recycling production pipe is connected between the third circulating pump 7 and the second heat exchanger 10, and the recycled ammonia water can be used for oximation reaction, so that the raw material cost is reduced, and the cost for treating the ammonia water is reduced.
As shown in fig. 1, the third heat exchanger 11 is equipped with a condensate tank, an outlet of the third heat exchanger 11 is connected with a VOC device, and the condensate tank can recover a low-boiling-point material back-use system, so as to further reduce the load of subsequent VOC and prolong the operation cycle of the VOC device.
As shown in fig. 1, the refrigerant medium of the first heat exchanger 5 is low-temperature water at 7 ℃, the refrigerant medium of the second heat exchanger 10 is circulating water, and the refrigerant medium of the third heat exchanger 11 is chilled water at-15 ℃. The first circulating pump 2 and the third circulating pump 7 can perform absorption tower self-circulation, when the amount of ammonia is small, the large circulation can be stopped, the small circulation absorption can be performed, and energy conservation and consumption reduction are realized
As shown in fig. 1, the first absorption tower 1 and the second absorption tower 6 are both connected with a desalted water valve, so that desalted water can be timely supplemented after ammonia water is recycled, and the operation is convenient.
The specific treatment process comprises the following steps: before rectification, supplementing water into the whole absorption system, starting circulation, cooling water in a first ammonia water recycling tank 3 and a second ammonia water recycling tank 8, then starting rectification, feeding ammonia-containing tail gas generated by rectification products into the lower part of a first absorption tower 1, allowing the water to flow to the bottom from the top of the first absorption tower 1 through a distributor packing, pumping the water into the first ammonia water recycling tank 3 through a first circulating pump 2, pumping absorption liquid into a first heat exchanger 5 through a second circulating pump 4, cooling, then feeding the absorption liquid into the upper part of the first absorption tower 1, performing circulation absorption, absorbing ammonia gas as an exothermic reaction, increasing the water temperature to influence the absorption efficiency, cooling through the first heat exchanger 5 to improve the efficiency of the absorption tower for absorbing ammonia gas, and discharging tail gas from the top of the first absorption tower 1, get into 6 lower parts of second absorption tower, the retrieval and utilization aqueous ammonia is thrown into 6 upper portions entering second absorption tower 6 from 8 bottom exports of second aqueous ammonia retrieval and utilization jar through fourth circulating pump 9 from second heat exchanger 10, the aqueous ammonia gets into second aqueous ammonia retrieval and utilization jar 8 through third circulating pump 7, tail gas gets into third heat exchanger 11 from 6 tops of second absorption tower, get into the VOC device behind the low boiling thing of third heat exchanger 11 condensation, the aqueous ammonia gets into reaction system through second circulating pump 4 and fourth circulating pump 9 and recycles, the rectification later stage, when the ammonia spills over very little, can stop second circulating pump 4 and fourth circulating pump 9, utilize first circulating pump 2 and third circulating pump 7 to carry out the absorption tower self-loopa, realize energy saving and consumption reduction.
The foregoing description is only exemplary of the preferred embodiments of the invention and is provided for the purpose of illustrating the general principles of the invention. Meanwhile, the scope of the present invention is not limited to the specific combinations of the above-described technical features, and other technical features or equivalent features may be combined arbitrarily without departing from the scope of the present invention. For example, the above features and (but not limited to) technical features having similar functions disclosed in the present invention are mutually replaced to form the technical solution.
Claims (6)
1. The utility model provides a double tower absorbs apparatus for producing that contains ammonia tail gas recovery aqueous ammonia, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the bottom outlet of the first absorption tower (1) is connected with the inlet of a first circulating pump (2);
the top inlet of the first ammonia water recycling tank (3) is connected with the outlet of the first circulating pump (2), and the bottom outlet of the first ammonia water recycling tank (3) is connected with the inlet of the second circulating pump (4);
an inlet of the first heat exchanger (5) is connected with an outlet of the second circulating pump (4), and an outlet of the first heat exchanger (5) is connected with an inlet at the top of the first absorption tower (1) through a first connecting pipeline (12);
an inlet at the lower part of the second absorption tower (6) is connected with an outlet at the top part of the first absorption tower (1), and an outlet at the bottom part of the second absorption tower (6) is connected with an inlet of a third circulating pump (7);
the top inlet of the second ammonia water recycling tank (8) is connected with the outlet of the third circulating pump (7), and the bottom outlet of the second ammonia water recycling tank (8) is connected with the inlet of a fourth circulating pump (9);
and an inlet of the second heat exchanger (10) is connected with an outlet of the fourth circulating pump (9), and an outlet of the second heat exchanger (10) is connected with an inlet at the top of the second absorption tower (6) through a second connecting pipeline.
2. The production device for recovering ammonia water by absorbing ammonia-containing tail gas with double towers according to claim 1, which is characterized in that: the absorption tower further comprises a third heat exchanger (11), and an inlet of the third heat exchanger (11) is connected with an outlet at the top of the second absorption tower (6).
3. The production device for recovering ammonia water by absorbing ammonia-containing tail gas with double towers according to claim 1, which is characterized in that: a first ammonia water recycling production pipe is connected between the first circulating pump (2) and the first heat exchanger (5).
4. The production device for recovering ammonia water by absorbing ammonia-containing tail gas with double towers according to claim 1, which is characterized in that: a second ammonia water recycling production pipe is connected between the third circulating pump (7) and the second heat exchanger (10).
5. The production device for recovering ammonia water by absorbing ammonia-containing tail gas with double towers according to claim 2, which is characterized in that: the third heat exchanger (11) is equipped with a condensate tank, and the outlet of the third heat exchanger (11) is connected with a VOC device.
6. The production device for recovering ammonia water by absorbing ammonia-containing tail gas with double towers according to claim 1, which is characterized in that: the first absorption tower (1) and the second absorption tower (6) are both connected with desalted water valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222705001.9U CN218653742U (en) | 2022-10-14 | 2022-10-14 | Double-tower production device for absorbing ammonia-containing tail gas and recovering ammonia water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222705001.9U CN218653742U (en) | 2022-10-14 | 2022-10-14 | Double-tower production device for absorbing ammonia-containing tail gas and recovering ammonia water |
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| Publication Number | Publication Date |
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| CN218653742U true CN218653742U (en) | 2023-03-21 |
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| CN202222705001.9U Active CN218653742U (en) | 2022-10-14 | 2022-10-14 | Double-tower production device for absorbing ammonia-containing tail gas and recovering ammonia water |
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| CN (1) | CN218653742U (en) |
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- 2022-10-14 CN CN202222705001.9U patent/CN218653742U/en active Active
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