CN204574696U - Synthetic ammonia freezing system - Google Patents
Synthetic ammonia freezing system Download PDFInfo
- Publication number
- CN204574696U CN204574696U CN201420782443.6U CN201420782443U CN204574696U CN 204574696 U CN204574696 U CN 204574696U CN 201420782443 U CN201420782443 U CN 201420782443U CN 204574696 U CN204574696 U CN 204574696U
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- CN
- China
- Prior art keywords
- ammonia
- gas
- ice maker
- outlet
- communicated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 220
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 108
- 238000007710 freezing Methods 0.000 title claims abstract description 19
- 230000008014 freezing Effects 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000000926 separation method Methods 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000007906 compression Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
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- Degasification And Air Bubble Elimination (AREA)
Abstract
The utility model belongs to preparation or the separation field of ammonia, be specifically related to a kind of synthetic ammonia freezing system, comprise ammonia cooler, ice maker, condensing tower and ammonia tank, wherein, also be provided with gas-liquid separation device, safety valve and gas ammonia surge tank, described ammonia cooler, gas-liquid separation device, ice maker, condensing tower are connected by pipeline in turn with ammonia tank, and the pipeline of condensing tower outlet is also provided with the circulation pipe be communicated with ammonia cooler, upper described ice maker outlet conduit is provided with a point pressure pipe, and described point of pressure pipe is connected with gas ammonia surge tank.The utility model synthetic ammonia freezing system can ensure that ice maker runs under nominal power, and the freezing workshop section cost of synthetic ammonia is lower.
Description
Technical field
The utility model belongs to preparation or the separation field of ammonia, is specifically related to a kind of synthetic ammonia freezing system.
Background technology
Synthetic ammonia comprises three technical process substantially: the manufacture of (1) unstripped gas; (2) unstripped gas purification (comprise desulfurization, conversion remove CO, carbonization, decarburization remove CO
2, refining removes CO, CO of trace
2, H
2s, O
2deng); (3) ammonia synthesis and in order to meet gas purification and synthesize the compression section that each procedure technology condition provides energy compensating.
Freezing workshop section is one of important component part of technical process (3), and the ammonia of gaseous state is liquefied, by liquid ammonia gasification for ammonia synthesis workshop section provides temperature production condition by processes such as gas ammonia compression, condensation, throttling, evaporations by this workshop section again.
In the freezing workshop section of synthetic ammonia, gas ammonia enters separator before ice maker through gas ammonia pipeline, enter ammonia ice maker after isolating liquefied ammonia to pressurize, gas ammonia after pressurization enters water cooler, be condensed into liquefied ammonia at this gas ammonia to be circulated to ammonia cooler and to lower the temperature to ammonia, in addition, the ammonia through water cooler liquefaction can also enter the storage of ammonia tank.
In the freezing workshop section of existing synthetic ammonia, a water cooler is set usually, and a water cooler is often difficult to be converted into by gas ammonia efficiently liquefied ammonia, so the pressure in ice maker is higher, be easy to cause ice maker superpressure, and superpressure meeting damage equipment, cause unsafe factor, even lead to substantial equipment security incident.Although if establish two water chillers can solve the problem of ice maker superpressure, add cost obviously.
Utility model content
For the defect that above-mentioned prior art exists, the purpose of this utility model is to provide one to ensure, and ice maker runs under nominal power, and the lower-cost synthetic ammonia freezing system of freezing workshop section of synthetic ammonia.
For achieving the above object, the technical solution of the utility model is: synthetic ammonia freezing system, comprise ammonia cooler, ice maker, condensing tower and ammonia tank, wherein, also be provided with gas-liquid separation device, safety valve and gas ammonia surge tank, described ammonia cooler, gas-liquid separation device, ice maker, condensing tower are connected by pipeline in turn with ammonia tank, and the pipeline of condensing tower outlet is also provided with the circulation pipe be communicated with ammonia cooler, upper described ice maker outlet conduit is provided with a point pressure pipe, and described point of pressure pipe is connected with gas ammonia surge tank.
When adopting technique scheme, the ammonia synthesized in synthetic tower enters ammonia cooler, in ammonia cooler, amino moiety is liquid, part is gaseous state, after gas is passed into gas-liquid separation device, by the ammonia separation of liquid state out, the ammonia of gaseous state enters ice maker and compresses, ammonia pressure after compression raises, and enters condensing tower subsequently, the ammonia of gaseous state is all condensed into liquid ammonia, the circulation pipe that last part is exported by condensing tower enters ammonia cooler, and another part enters the storage of ammonia tank.When ice maker superpressure, ammonia can enter into gas ammonia surge tank by point pressure pipe on ice maker outlet conduit, makes ice maker be in normal operating conditions.In addition, through improvement after, the utility model without the need to increasing condensing tower, so the cost of synthetic ammonia workshop section can be reduced.
Further, described gas-liquid separation device comprises cyclone separator and liquid collecting tank, the air inlet of cyclone separator is communicated with ammonia cooler, gas outlet is communicated with ice maker, described liquid collecting tank is communicated with cyclone separator outlet at bottom, and in the middle part of described liquid collecting tank, side is provided with the balance pipe be communicated with Cyclone outlet tube.In prior art, usually only cyclone separator is adopted, and it is tapered bottom cyclone separator, swirling eddy in cyclone separator extrudes downwards, very easily form " high pressure " on cone end liquefied ammonia surface to turn back, the liquefied ammonia separated is rolled again, takes out of with air-flow from surge tank central row tracheae, thus make punching delay tank not have and be separated the effect of liquefied ammonia.And bottom the utility model cyclone separator, connect liquid collecting tank, the liquefied ammonia that cyclone separator separates, at self gravitation, and under partly entering the acting in conjunction of the air-flow of liquid collecting tank, than being easier to enter in liquid collecting tank, the gas entered in liquid collecting tank is discharged through balance pipe.
Further, the pipeline of described ice maker outlet is provided with safety valve or atmospheric valve, is not enough to the pressure reduction in ice maker in point pressure pipe, and safety valve or atmospheric valve can releasing pressure automaticallies, thus avoid ice maker superpressure.
Further, described condensing tower is tubular heat exchanger, the tube side import of tubular heat exchanger and ice maker export and pass through pipeline communication, the shell side inlet of tubular heat exchanger is communicated with outside circulating cooling water source, the space of tubular heat exchanger shell side is larger, heat up after recirculated cooling water heat absorption, and part evaporation forms steam, the space of shell side can make pressure in heat exchanger remain on lower scope.Heat exchanger internal cause pressure can be avoided large and hinder cooling water to enter the situation of tube side.
Further, be provided with the return duct of circulation between the outlet of described tubular heat exchanger shell side and entrance, if the cooling water of cooling water source is to after ammonia cooling, temperature is still lower, then expendable cooling water can be used by return duct backflow, thus improve the service efficiency of cooling water.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Fig. 1 is the structural representation of the utility model synthetic ammonia freezing system embodiment.
Reference numeral: 1. ammonia cooler, 2. gas-liquid separation device, 21. cyclone separators, 22. liquid collecting tanks, 23 balance pipes, 3. ice maker, 4. tubular heat exchanger, 5. ammonia tank, 6. gas ammonia surge tank, 7. valve, 8. circulation pipe, 9. point pressure pipe.
Detailed description of the invention
As shown in Figure 1, a kind of synthetic ammonia freezing system, comprise ammonia cooler 1, ice maker 3, condensing tower and ammonia tank 5, wherein, also be provided with gas-liquid separation device 2, safety valve and gas ammonia surge tank 6, ammonia cooler 1, gas-liquid separation device 2, ice maker 3, condensing tower are connected by pipeline in turn with ammonia tank 5, the pipeline of condensing tower outlet is also provided with the circulation pipe 8 be communicated with ammonia cooler 1, ice maker 3 outlet conduit is provided with point pressure pipe 9, point pressure pipe 9 and circulation pipe 8 are equipped with valve 7, and point pressure pipe 9 is connected with gas ammonia surge tank 6.
In the present embodiment, gas-liquid separation device comprises cyclone separator 21 and liquid collecting tank 22, the air inlet of cyclone separator 21 is communicated with ammonia cooler, gas outlet is communicated with ice maker 3, liquid collecting tank 22 is communicated with cyclone separator 21 outlet at bottom, in the middle part of liquid collecting tank, side is provided with the balance pipe 23 be communicated with cyclone separator 21 outlet, and balance pipe 23 is provided with valve 7.In prior art, usual employing cyclone separator 21, and it is tapered bottom cyclone separator 21, swirling eddy in cyclone separator 21 extrudes downwards, very easily form high pressure on cone end liquefied ammonia surface to turn back, the liquefied ammonia separated is rolled again, takes out of with air-flow from surge tank central row tracheae, thus make punching delay tank not have and be separated the effect of liquefied ammonia.And bottom the utility model cyclone separator 21, connect liquid collecting tank 22, the liquefied ammonia that cyclone separator 21 separates, at self gravitation, and under partly entering the acting in conjunction of the air-flow of liquid collecting tank 22, than being easier to enter in liquid collecting tank 22, the gas entered in liquid collecting tank 22 is discharged through balance pipe 23.
The pipeline that ice maker 3 exports is provided with safety valve, is not enough to the pressure reduction in ice maker 3 in point pressure pipe 9, and safety valve or atmospheric valve can releasing pressure automaticallies, thus avoid ice maker 3 superpressure.
Condensing tower is tubular heat exchanger 4, the tube side import of tubular heat exchanger 4 and ice maker 3 export and pass through pipeline communication, the shell side inlet of tubular heat exchanger 4 is communicated with outside circulating cooling water source, the space of tubular heat exchanger 4 shell side is larger, heat up after recirculated cooling water heat absorption, and part evaporation forms steam, the space of shell side can make pressure in heat exchanger 4 remain on lower scope.Heat exchanger 4 internal cause pressure can be avoided large and hinder cooling water to enter the situation of tube side.
The return duct of circulation is provided with between the outlet of tubular heat exchanger 4 shell side and entrance, if the cooling water of cooling water source is to after ammonia cooling, temperature is still lower, then expendable cooling water can be used by return duct backflow, thus improve the service efficiency of cooling water.
Specific works flow process:
As shown in Figure 1, in figure, arrow represents the flow direction of gas or liquid.The ammonia synthesized in synthetic tower enters ammonia cooler 1, in ammonia cooler 1, amino moiety is liquid, part is gaseous state, after gas being passed into the cyclone separator 21 of gas-liquid separation device 2, cyclone separator 21 by the ammonia separation of liquid state out, liquefied ammonia enters in liquid collecting tank 22, the ammonia of gaseous state enters ice maker 3 and compresses, ammonia pressure after compression raises, enter from the tube-side inlet entering tubular heat exchanger 4 subsequently, in tubular heat exchanger 4, the ammonia of gaseous state is all condensed into liquid ammonia, cooling water is adopted to cool ammonia in the shell side of tubular heat exchanger 4, finally, a part enters ammonia cooler 1 by the circulation pipe 8 of tubular heat exchanger 4 tube side outlet, the gaseous state of ammonia cooler 1 is entered to synthetic tower and liquid ammonia cools, another part enters ammonia tank 5 and stores.When ice maker 3 superpressure, ammonia can enter into gas ammonia surge tank 6 by point pressure pipe 9 on ice maker 3 outlet conduit, makes ice maker 3 be in normal operating conditions.
Above-described is only preferred embodiment of the present utility model; should be understood that; for a person skilled in the art; under the prerequisite not departing from the utility model structure; some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.
Claims (5)
1. synthetic ammonia freezing system, comprise ammonia cooler, ice maker, condensing tower and ammonia tank, it is characterized in that, also be provided with gas-liquid separation device, safety valve and gas ammonia surge tank, described ammonia cooler, gas-liquid separation device, ice maker, condensing tower are connected by pipeline in turn with ammonia tank, the pipeline of condensing tower outlet is also provided with the circulation pipe be communicated with ammonia cooler, and described ice maker outlet conduit is provided with a point pressure pipe, and described point of pressure pipe is connected with gas ammonia surge tank.
2. synthetic ammonia freezing system according to claim 1, it is characterized in that, described gas-liquid separation device comprises cyclone separator and liquid collecting tank, the air inlet of cyclone separator is communicated with ammonia cooler, gas outlet is communicated with ice maker, described liquid collecting tank is communicated with cyclone separator outlet at bottom, and in the middle part of described liquid collecting tank, side is provided with the balance pipe be communicated with Cyclone outlet tube.
3. synthetic ammonia freezing system according to claim 1, is characterized in that, the pipeline of described ice maker outlet is provided with safety valve or atmospheric valve.
4. synthetic ammonia freezing system according to claim 1, it is characterized in that, described condensing tower is tubular heat exchanger, and the tube side import of tubular heat exchanger and ice maker export by pipeline communication, and the shell side inlet of tubular heat exchanger is communicated with outside circulating cooling water source.
5. synthetic ammonia freezing system according to claim 4, is characterized in that, is provided with the return duct of circulation between the outlet of described tubular heat exchanger shell side and entrance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420782443.6U CN204574696U (en) | 2014-12-13 | 2014-12-13 | Synthetic ammonia freezing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420782443.6U CN204574696U (en) | 2014-12-13 | 2014-12-13 | Synthetic ammonia freezing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204574696U true CN204574696U (en) | 2015-08-19 |
Family
ID=53867319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420782443.6U Expired - Fee Related CN204574696U (en) | 2014-12-13 | 2014-12-13 | Synthetic ammonia freezing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204574696U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595148A (en) * | 2015-10-16 | 2017-04-26 | 安徽华尔泰化工股份有限公司 | Ammonia adding device for synthesis ammonia cooler |
| CN106766351A (en) * | 2017-01-18 | 2017-05-31 | 文安县天澜新能源有限公司 | A kind of method and apparatus for eliminating synthesis ammonia freezing post liquid ammonia storage tank emptying |
| CN109160523A (en) * | 2018-11-09 | 2019-01-08 | 陕西黑猫焦化股份有限公司 | A kind of gas ammonia prepares the system and method for ammonium hydroxide |
-
2014
- 2014-12-13 CN CN201420782443.6U patent/CN204574696U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106595148A (en) * | 2015-10-16 | 2017-04-26 | 安徽华尔泰化工股份有限公司 | Ammonia adding device for synthesis ammonia cooler |
| CN106766351A (en) * | 2017-01-18 | 2017-05-31 | 文安县天澜新能源有限公司 | A kind of method and apparatus for eliminating synthesis ammonia freezing post liquid ammonia storage tank emptying |
| CN109160523A (en) * | 2018-11-09 | 2019-01-08 | 陕西黑猫焦化股份有限公司 | A kind of gas ammonia prepares the system and method for ammonium hydroxide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 401420, Chongqing Qijiang District Wen long street pass Patentee after: Chongqing Huaqiang Investment Group Co.,Ltd. Address before: 401420 Chongqing City, Wansheng Qijiang District Nanzhen gateway to Patentee before: Chongqing Huaqiang Investment Group Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150819 |