CN212253744U - Ammonia distillation circulation heat exchange assembly - Google Patents
Ammonia distillation circulation heat exchange assembly Download PDFInfo
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- CN212253744U CN212253744U CN202020276617.7U CN202020276617U CN212253744U CN 212253744 U CN212253744 U CN 212253744U CN 202020276617 U CN202020276617 U CN 202020276617U CN 212253744 U CN212253744 U CN 212253744U
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Abstract
The utility model relates to the technical field of ammonia recovery equipment, and discloses an ammonia distillation circulation heat exchange assembly, which comprises a first heat exchange unit, a second heat exchange unit and a third heat exchange unit, wherein the first heat exchange unit, the second heat exchange unit and the third heat exchange unit comprise a circulation tank and a heat exchanger; circulating pumps for pumping water to the heat exchanger for heat exchange are arranged on the circulating tanks of the first heat exchange unit, the second heat exchange unit and the third heat exchange unit, a water return pipeline for returning water is connected between the heat exchanger and the circulating tanks, and an exhaust valve is arranged at the top of each circulating tank; a first medium pipeline is connected between the heat exchangers of the first heat exchange unit and the second heat exchange unit, a second medium pipeline is connected between the heat exchangers of the second heat exchange unit and the third heat exchange unit, and a third medium pipeline is connected between the heat exchangers of the third heat exchange unit and the first heat exchange unit. The utility model discloses can provide the stoste after preheating for ammonia still in succession.
Description
Technical Field
The utility model relates to an ammonia recovery equipment technical field especially relates to an ammonia distillation circulation heat transfer subassembly.
Background
In the process of preparing zinc oxide by ammonia method, ammonia water is used for complexing zinc, the evaporated ammonia is used for realizing the crystallization of zinc ions, the ammonia gas of the evaporated ammonia can be used as zinc-ammonia complexing liquid for complexing zinc after being converted into the ammonia water by ammonia absorption, and the whole process is the ammonia circulation process. In the ammonia-process zinc oxide process, ammonia water which is an important production auxiliary material is not paid attention to ammonia gas recovery in the production process of many factories, and ammonia gas is discharged into the surrounding environment to cause ammonia gas pollution, so that the ammonia gas recovery can improve the ammonia gas utilization efficiency and protect the environment.
The ammonia distillation process needs a large amount of steam, and the amount of steam consumed in the ammonia distillation process generally occupies more than half of the total amount of steam used in a factory. In the prior art, a large amount of steam is needed to be used for heating in an ammonia distillation tank and then ammonia distillation is carried out in the ammonia distillation heat exchange process, the use amount of the steam is large, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an ammonia distillation circulation heat transfer subassembly can use the ammonia distillation tail gas to preheat in succession the ammonia distillation stoste, improves the speed of ammonia distillation, and is energy-concerving and environment-protective.
In order to achieve the purpose, the utility model provides an ammonia distillation circulation heat exchange assembly, which comprises a first heat exchange unit, a second heat exchange unit and a third heat exchange unit, wherein the first heat exchange unit, the second heat exchange unit and the third heat exchange unit comprise a circulation tank and a heat exchanger;
circulating pumps for pumping water to the heat exchanger for heat exchange are arranged on the circulating tanks of the first heat exchange unit, the second heat exchange unit and the third heat exchange unit, a water return pipeline for returning water is connected between the heat exchanger and the circulating tanks, and an exhaust valve is arranged at the top of each circulating tank;
a first medium pipeline is connected between the heat exchangers of the first heat exchange unit and the second heat exchange unit, a second medium pipeline is connected between the heat exchangers of the second heat exchange unit and the third heat exchange unit, a third medium pipeline is connected between the heat exchangers of the third heat exchange unit and the first heat exchange unit, a first valve is arranged on the first medium pipeline, a second valve is arranged on the second medium pipeline, and a third valve is arranged on the third medium pipeline;
a circulating pump of the first heat exchange unit and a circulating tank of the second heat exchange unit are connected with a first circulating pipeline, a circulating pump of the second heat exchange unit and a circulating tank of the third heat exchange unit are connected with a second circulating pipeline, a circulating pump of the third heat exchange unit and a circulating tank of the first heat exchange unit are connected with a third circulating pipeline, a fourth valve is arranged on the first circulating pipeline, a fifth valve is arranged on the second circulating pipeline, and a sixth valve is arranged on the third circulating pipeline;
and a stock solution inlet and a stock solution outlet are formed in each circulating tank, and the heat exchanger can be used for evaporating ammonia and preheating the stock solution.
Preferably, the heat exchanger comprises an inner pipe, an outer pipe and a medium pipe, the medium pipe is sleeved in the outer pipe, the inner pipe is sleeved in the medium pipe, the medium pipe is used for passing hot water or steam, and the inner pipe and the outer pipe are communicated and used for passing ammonia water.
Preferably, a conical connecting portion is arranged between the inner pipe and the outer pipe, a through hole for passing ammonia water is formed in the connecting portion, openings are formed in two ends of the inner pipe, an outer pipe connecting flange is arranged on the outer pipe, the medium pipe is spiral, the end portion of the medium pipe transversely protrudes out of the outer pipe, and two ends of the inner pipe protrude out of the outer pipe.
Preferably, the outer pipe is a cold-drawn pipe, and the medium pipe is a steel pipe.
Preferably, a protective tube is connected to the medium pipe on the side of the outer pipe in a sleeved manner.
Preferably, the protection tube is made of a cold drawn tube.
Preferably, the end of the protective tube is soldered to the medium tube.
Preferably, the connecting part is connected with the inner pipe and the outer pipe by brazing.
The utility model provides an ammonia distillation circulation heat transfer subassembly has following beneficial effect:
1. the first heat exchange unit, the second heat exchange unit and the third heat exchange unit are sequentially used as first-stage ammonia distillation preheating equipment in turn to preheat ammonia distillation, so that stock solution can be fully preheated, the ammonia distillation effect of a subsequent ammonia distillation process is ensured, the steam consumption of the ammonia distillation process is saved, and the utilization efficiency of the waste heat of ammonia distillation tail gas is improved;
2. the first heat exchange unit, the second heat exchange unit and the third heat exchange unit are sequentially used as first-stage ammonia evaporation preheating equipment in turn to preheat ammonia, so that the preheated stock solution can be continuously supplied to a next-stage ammonia evaporation process, and the speed of a subsequent ammonia evaporation process is increased.
Drawings
FIG. 1 is a schematic structural diagram of an ammonia distillation cycle heat exchange assembly in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a circulation tank of the ammonia distillation cycle heat exchange assembly in the embodiment of the present invention;
fig. 3 is a schematic perspective view of a heat exchanger according to an embodiment of the present invention;
fig. 4 is a schematic sectional structure diagram of a heat exchanger according to an embodiment of the present invention;
in the figure, 100, a first heat exchange unit; 114. a first circulation pipe; 116. a fourth valve; 120. a first medium conduit; 121. a first valve; 200. a second heat exchange unit; 214. a second circulation pipe; 216. a fifth valve; 220. a second medium pipe; 221. a second valve; 300. a third heat exchange unit; 314. a third circulation pipe; 316. a sixth valve; 320. a third medium pipe; 321. a third valve; 720. a circulation tank; 721. an inlet and an outlet for stock solution; 723. An exhaust valve; 730. a circulation pump; 740. a heat exchanger; 741. an inner tube; 741a and an inner pipe connecting flange; 743. A medium pipe; 747. a thermal insulation layer; 750. a water return pipeline.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in the figures 1 to 4, the utility model discloses ammonia distillation circulation heat transfer subassembly of preferred embodiment can improve and carry out high-efficient preheating to the stoste, improves the preheating rate to the stoste that ammonia distillation process will use, supplies with the stoste after preheating that ammonia distillation process needs to use in succession, improves ammonia distillation speed.
Based on above-mentioned technical scheme, provide an ammonia distillation circulation heat transfer subassembly in this embodiment, including first heat transfer unit 100, second heat transfer unit 200 and third heat transfer unit 300, wherein, first heat transfer unit 100, second heat transfer unit 200 and third heat transfer unit 300 are used for preheating the stoste.
Specifically, first heat exchange unit 100, second heat exchange unit 200, and third heat exchange unit 300 each include a circulation tank 720 and a heat exchanger 740. The circulation tank 720 is used for containing the stock solution, and the heat exchanger 740 can heat the stock solution through the medium.
Specifically, circulation pumps 730 for pumping water to the heat exchanger 740 for heat exchange are respectively arranged on the circulation tanks 720 of the first heat exchange unit 100, the second heat exchange unit 200 and the third heat exchange unit 300, and the circulation pumps 730 are used for providing power for circulating the stock solution between the circulation tanks 720 and the heat exchanger 740.
Specifically, a water return pipe 750 for returning water is connected between the heat exchanger 740 and the circulation tank 720, and the water return pipe 750 can introduce the ammonia gas in the heat exchanger 740 back into the circulation tank 720.
Specifically, as shown in fig. 4, a vent valve 723 is provided at the top of each circulation tank 720. The exhaust valve 723 can lead out ammonia gas escaping from the stock solution in the circulation tank 720, and the exhaust valve 723 at the top of the circulation tank 720 is connected with an ammonia absorption treatment system to absorb the ammonia gas.
Specifically, a first medium pipeline 120 is connected between the heat exchangers 740 of the first heat exchange unit 100 and the second heat exchange unit 200, the first medium pipeline 120 is used for medium circulation between the first heat exchange unit 100 and the second heat exchange unit 200, a first valve 121 is arranged on the first medium pipeline 120, and the first valve 121 is used for controlling medium circulation between the first heat exchange unit 100 and the second heat exchange unit 200.
Specifically, a second medium pipeline 220 is connected between the second heat exchange unit 200 and the heat exchanger 740 of the third heat exchange unit 300, the second medium pipeline 220 is used for medium circulation between the second heat exchange unit 200 and the third heat exchange unit 300, a second valve 221 is arranged on the second medium pipeline 220, and the second valve 221 is used for controlling medium circulation between the second heat exchange unit 200 and the third heat exchange unit 300.
Specifically, a third medium pipeline 320 is connected between the third heat exchange unit 300 and the heat exchanger 740 of the first heat exchange unit 100, the third medium pipeline 320 is used for medium flowing between the third heat exchange unit 300 and the first heat exchange unit 100, a third valve 321 is arranged on the third medium pipeline 320, and the third valve 321 is used for controlling medium flowing between the third heat exchange unit 300 and the first heat exchange unit 100.
Specifically, a first circulation pipeline 114 is connected to a circulation pump 730 of the first heat exchange unit 100 and a circulation tank 720 of the second heat exchange unit 200, the first circulation pipeline 114 can transmit ammonia water in the circulation tank 720 of the first heat exchange unit 100 to the circulation tank 720 of the second heat exchange unit 200, a fourth valve 116 is arranged on the first circulation pipeline 114, and the fourth valve 116 is used for controlling the opening and closing of the first circulation pipeline 114.
Specifically, a second circulation pipeline 214 is connected to a circulation pump 730 of the second heat exchange unit 200 and a circulation tank 720 of the third heat exchange unit 300, the second circulation pipeline 214 can transmit ammonia water in the circulation tank 720 of the second heat exchange unit 200 to the circulation tank 720 of the third heat exchange unit 300, a fifth valve 216 is arranged on the second circulation pipeline 214, and the fifth valve 216 is used for controlling the opening and closing of the second circulation pipeline 214.
Specifically, a third circulation pipeline 314 is connected to a circulation pump 730 of the third heat exchange unit 300 and a circulation tank 720 of the first heat exchange unit 100, the third circulation pipeline 314 can transmit ammonia water in the circulation tank 720 of the third heat exchange unit 300 to the circulation tank 720 of the first heat exchange unit 100, a sixth valve 316 is arranged on the third circulation pipeline 314, and the sixth valve 316 is used for controlling the opening and closing of the third circulation pipeline 314.
As shown in fig. 2, each circulation tank 720 is provided with a stock solution inlet/outlet 721, and the heat exchanger 740 can preheat the stock solution by ammonia distillation. The raw liquid inlet/outlet 721 is used for introducing the raw liquid into the circulation tank 720 or discharging the raw liquid from the circulation tank 720.
Specifically, as shown in fig. 3 and 4, the heat exchanger 740 includes an inner tube 741, an outer tube 742 and a medium tube 743, the medium tube 743 is sleeved in the outer tube 742, the inner tube 741 is sleeved in the medium tube 743, the medium tube 743 is used for passing water or steam, the inner tube 741 and the outer tube 742 are communicated and used for passing ammonia, and the medium tube 743 can heat or cool the ammonia in the inner tube 741 and the outer tube 742.
When the heat exchanger 740 is used as a heater, a heat medium is introduced into the medium pipe 743, so that the heat exchange effect of the outer side of the medium pipe 743 is better; when the heat exchanger is used as a cooler, a cold medium is introduced into the medium pipe 743, and the heat exchange at the inner side of the medium pipe 743 is better. The heat exchanger 740 has high heat conversion efficiency in both cooling and heating, and ensures the cooling effect on ammonia water.
Preferably, a connecting portion 744 of a conical shape is arranged between the inner tube 741 and the outer tube 742, a through hole 745 for passing through ammonia water is arranged on the connecting portion 744, both ends of the inner tube 741 are open, the ammonia water can be guided to the through hole 745 through the connecting portion 744, the uniformity of circulation of the ammonia water is improved, and the heat exchange effect is improved.
Specifically, the outer tube 742 is provided with an outer tube connecting flange 742a, and the heat exchanger 740 can be connected to an ammonia water pipe via the outer tube connecting flange 742 a.
Specifically, the medium pipe 743 is spiral, so that the contact area of the medium pipe 743 and ammonia water is increased. The end of the medium pipe 743 protrudes transversely from the outer pipe 742, and the joint between the medium pipe 743 and the outer pipe 742 is welded. The brazed joint has smooth surface, good air tightness, stable shape and size, and little change of the structure and the performance of a weldment, thereby ensuring the use effect and the service life of the heat exchanger 740.
Specifically, both ends of the inner tube 741 protrude from the outer tube 742, so that the end of the inner tube 741 can guide the ammonia water to flow into the inner tube 741.
Preferably, the outer tube 742 is a cold drawn tube, and the medium tube 743 is a steel tube, so that the corrosion resistance of ammonia water is strong. Ammonia corrodes copper and steel, so that a cold drawn pipe made of a steel pipe can resist the corrosion of ammonia.
Preferably, a protective tube 746 is connected to the medium pipe 743 on the side of the outer tube 742 in a sleeving manner, the protective tube 746 being able to isolate the medium pipe 743 from the ammonia, the service life of the medium pipe 743 being able to be further increased by the protective tube 746. The end of the protective tube 746 is provided with a recess for the passage of the end of the medium pipe 743, wherein during assembly, the entire medium pipe 743 is first inserted through the protective tube 746, and then the end of the medium pipe 743 is bent over and snapped into the recess of the end of the protective tube 746 for fixation.
Preferably, the protection tube 746 is made of a cold drawn tube, which is strong against ammonia corrosion.
Preferably, the ends of the protective tube 746 are soldered to the medium tubes 743 without affecting the pipe shape at the connection of the protective tube 746 to the medium tubes 743. After the end part of the medium pipe 743 is fixed, the outer side wall of the medium pipe 743 is connected with a notch of the end part of the protection pipe 746 in a brazing mode, then the end part of the protection pipe 746 is connected with the medium pipe 743 in a brazing mode, the surface of a brazed joint is clean, air tightness is good, the shape and the size are stable, the change of tissues and properties of a weldment is small, and the using effect and the service life of the joint between the outer side wall of the medium pipe 743 and the end part of the protection pipe 746 are guaranteed.
Preferably, the connection portion 744 is soldered to the inner tube 741 and the outer tube 742, and the shape of the duct at the connection portion 744, the inner tube 741, and the outer tube 742 is not affected.
The utility model discloses a working process does:
s110, introducing stock solution into each circulation tank 720 through a stock solution inlet/outlet 721 for standby, introducing ammonia distillation tail gas from a heat exchanger 740 of the first heat exchange unit 100, using the first heat exchange unit 100 as first-stage ammonia distillation preheating equipment, starting a circulation pump 730 of the first heat exchange unit 100 and the second heat exchange unit 200 to preheat the stock solution, and leading out ammonia gas through an exhaust valve 723.
The ammonia distillation tail gas is steam tail gas used in an ammonia distillation process in a higher-level system, and waste heat in the ammonia distillation tail gas is utilized by the heat exchanger 740. Here, can improve the temperature to the stoste through first order ammonia distillation preheating device, utilize the waste heat of ammonia distillation tail gas to preheat the stoste, be convenient for improve ammonia distillation speed in ammonia distillation process.
Here, the first valve 121 is opened, the second valve 221 and the third valve 321 are closed, and the fourth valve 116, the fifth valve 216, and the sixth valve 316 are closed.
At this moment, first heat exchange unit 100 preheats the equipment as first-stage ammonia distillation, and first heat exchange unit 100 tentatively absorbs the heat in the ammonia distillation tail gas, and second heat exchange unit 200, third heat exchange unit 300 absorb the heat in the ammonia distillation tail gas once more step by step, have improved the thermal absorption effect in the ammonia distillation tail gas.
Alternatively, the stock solution may be circulated along the first circulation line 114, the second circulation line 214, and the third circulation line 314 by opening the fourth valve 116, the fifth valve 216, and the sixth valve 316 in order.
S120, disconnecting the circulation tank 720 of the first heat exchange unit 100 from other circulation tanks 720, introducing ammonia distillation tail gas from the heat exchanger 740 of the second heat exchange unit 200, using the second heat exchange unit 200 as first-stage ammonia distillation preheating equipment, starting the circulation pumps 730 of the second heat exchange unit 200 and the third heat exchange unit 300 to preheat stock solution, and discharging and supplementing the stock solution to the circulation tank 720 of the first heat exchange unit 100.
The second valve 221 is opened, the first valve 121 and the third valve 321 are closed, and the fourth valve 116, the fifth valve 216, and the sixth valve 316 are closed.
The second heat exchange unit 200 is used as a first-stage ammonia distillation preheating device, and since the stock solution in the second heat exchange unit 200 is preheated in the step S110, the second heat exchange unit 200 absorbs heat in the ammonia distillation tail gas again, so that the preheating speed of the stock solution in the second heat exchange unit 200 is increased, and the stock solution can be quickly supplied to a next-stage ammonia distillation device; the third heat exchange unit 300 absorbs heat in the ammonia distillation tail gas exhausted from the second heat exchange unit 200 again, so that the absorption effect of heat in the ammonia distillation tail gas is improved.
S130, disconnecting the circulation tank 720 of the second heat exchange unit 200 from other circulation tanks 720, introducing ammonia distillation tail gas from a heat exchanger 740 of the third heat exchange unit 300, using the third heat exchange unit 300 as first-stage ammonia distillation preheating equipment, starting a circulation pump 730 of the third heat exchange unit 300 and the first heat exchange unit 100 to preheat stock solution, and discharging and supplementing the stock solution to the circulation tank 720 of the second heat exchange unit 200.
Here, the third valve 321 is opened, the first valve 121 and the second valve 221 are closed, and the fourth valve 116, the fifth valve 216, and the sixth valve 316 are closed.
The third heat exchange unit 300 is used as a first-stage ammonia distillation preheating device, because the stock solution in the third heat exchange unit 300 is preheated in the step S120, the third heat exchange unit 300 absorbs heat in the ammonia distillation tail gas again, the preheating speed of the stock solution in the third heat exchange unit 300 is improved, so that the stock solution can be quickly supplied to a next-stage ammonia distillation device, the first heat exchange unit 100 absorbs heat in the ammonia distillation tail gas exhausted from the third heat exchange unit 300 again, and the absorption effect of the heat in the ammonia distillation tail gas is improved.
S140, disconnecting the circulation tank 720 of the third heat exchange unit 300 from other circulation tanks 720, introducing ammonia distillation tail gas from the heat exchanger 740 of the first heat exchange unit 100, using the first heat exchange unit 100 as first-stage ammonia distillation preheating equipment, starting the circulation pumps 730 of the first heat exchange unit 100 and the second heat exchange unit 200 to preheat stock solution, and discharging and supplementing the stock solution to the circulation tank 720 of the third heat exchange unit 300.
Here, the first valve 121 is opened, the second valve 221 and the third valve 321 are closed, and the fourth valve 116, the fifth valve 216, and the sixth valve 316 are closed.
First heat transfer unit 100 preheats the equipment as first order ammonia distillation, because the stoste in first heat transfer unit 100 has been preheated in the step S120, heat in the ammonia distillation tail gas is absorbed once more to first heat transfer unit 100, the preheating rate of stoste in first heat transfer unit 100 has been improved for the stoste can be supplied to subordinate' S ammonia distillation equipment fast, second heat transfer unit 200 absorbs the heat in the ammonia distillation tail gas of exhaust in first heat transfer unit 100 once more, improved the absorption effect to the heat in the ammonia distillation tail gas.
S150, repeating the steps from S110 to S140, taking the first heat exchange unit 100, the second heat exchange unit 200 and the third heat exchange unit 300 as first-stage ammonia distillation preheating equipment in turn, discharging ammonia distillation and feeding after the preheating temperature is reached, and waiting for next circulation after the stock solution is added again.
Through repeating the steps S110 to S140, the circulation tanks 720 in the first heat exchange unit 100, the second heat exchange unit 200 and the third heat exchange unit 300 can continuously supply the primary liquid after preheating to the next ammonia distillation process in turn, the supply speed is high, the continuous production process in a factory is effectively ensured, the circulation tanks 720 in the first heat exchange unit 100, the second heat exchange unit 200 and the third heat exchange unit 300 can absorb and utilize the heat in the ammonia distillation tail gas step by step, the ammonia distillation efficiency is improved, the utilization efficiency of the waste heat of the ammonia distillation tail gas is also improved, and the heat-saving and environment-friendly effects are achieved.
To sum up, the utility model discloses a first heat transfer unit, second heat transfer unit, third heat transfer unit take turns in proper order and preheat equipment as first order ammonia distillation and evaporate ammonia and preheat, can fully preheat the stoste, guarantee the ammonia distillation effect of subsequent ammonia distillation process, practice thrift the steam consumption of ammonia distillation process, also improved the utilization efficiency to evaporating ammonia tail gas waste heat, energy-concerving and environment-protective. The raw liquid for next ammonia distillation is continuously supplied, and the speed of the ammonia distillation process is increased.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (8)
1. The ammonia distillation circulation heat exchange assembly is characterized by comprising a first heat exchange unit, a second heat exchange unit and a third heat exchange unit, wherein the first heat exchange unit, the second heat exchange unit and the third heat exchange unit respectively comprise a circulation tank and a heat exchanger;
circulating pumps for pumping water to the heat exchanger for heat exchange are arranged on the circulating tanks of the first heat exchange unit, the second heat exchange unit and the third heat exchange unit, a water return pipeline for returning water is connected between the heat exchanger and the circulating tanks, and an exhaust valve is arranged at the top of each circulating tank;
a first medium pipeline is connected between the heat exchangers of the first heat exchange unit and the second heat exchange unit, a second medium pipeline is connected between the heat exchangers of the second heat exchange unit and the third heat exchange unit, a third medium pipeline is connected between the heat exchangers of the third heat exchange unit and the first heat exchange unit, a first valve is arranged on the first medium pipeline, a second valve is arranged on the second medium pipeline, and a third valve is arranged on the third medium pipeline;
a circulating pump of the first heat exchange unit and a circulating tank of the second heat exchange unit are connected with a first circulating pipeline, a circulating pump of the second heat exchange unit and a circulating tank of the third heat exchange unit are connected with a second circulating pipeline, a circulating pump of the third heat exchange unit and a circulating tank of the first heat exchange unit are connected with a third circulating pipeline, a fourth valve is arranged on the first circulating pipeline, a fifth valve is arranged on the second circulating pipeline, and a sixth valve is arranged on the third circulating pipeline;
and a stock solution inlet and a stock solution outlet are formed in each circulating tank, and the heat exchanger can be used for evaporating ammonia and preheating the stock solution.
2. The ammonia distillation cycle heat exchange assembly of claim 1, wherein the heat exchanger comprises an inner pipe, an outer pipe and a medium pipe, the medium pipe is sleeved in the outer pipe, the inner pipe is sleeved in the medium pipe, the medium pipe is used for passing hot water or steam, and the inner pipe and the outer pipe are communicated and used for passing ammonia water.
3. The ammonia distillation cycle heat exchange assembly of claim 2, wherein a conical connecting part is arranged between the inner pipe and the outer pipe, a through hole for passing ammonia water is arranged on the connecting part, two ends of the inner pipe are open, an outer pipe connecting flange is arranged on the outer pipe, the medium pipe is spiral, the end part of the medium pipe is transversely protruded out of the outer pipe, and two ends of the inner pipe are protruded out of the outer pipe.
4. The ammonia distillation cycle heat exchange assembly of claim 3, wherein the outer pipe is a cold drawn pipe and the medium pipe is a steel pipe.
5. The ammonia distillation cycle heat exchange assembly of claim 4, wherein a protective tube is sleeved on the medium tube at the side of the outer tube.
6. The ammonia distillation cycle heat exchange assembly of claim 5 wherein the protective tube is made of a cold drawn tube.
7. The ammonia distillation cycle heat exchange assembly of claim 6 wherein the ends of the protective tubes are brazed to the media tubes.
8. The ammonia distillation cycle heat exchange assembly of claim 7 wherein the connecting portion is brazed to the inner and outer tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020276617.7U CN212253744U (en) | 2020-03-09 | 2020-03-09 | Ammonia distillation circulation heat exchange assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020276617.7U CN212253744U (en) | 2020-03-09 | 2020-03-09 | Ammonia distillation circulation heat exchange assembly |
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| CN212253744U true CN212253744U (en) | 2020-12-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118500149A (en) * | 2024-07-19 | 2024-08-16 | 浙江腾景环保科技有限公司 | Steam energy-saving box for circulating heat exchange |
| CN118500149B (en) * | 2024-07-19 | 2024-10-25 | 浙江腾景环保科技有限公司 | Steam energy-saving box for circulating heat exchange |
-
2020
- 2020-03-09 CN CN202020276617.7U patent/CN212253744U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118500149A (en) * | 2024-07-19 | 2024-08-16 | 浙江腾景环保科技有限公司 | Steam energy-saving box for circulating heat exchange |
| CN118500149B (en) * | 2024-07-19 | 2024-10-25 | 浙江腾景环保科技有限公司 | Steam energy-saving box for circulating heat exchange |
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