CN204944042U - A kind of air precooler improving air separation unit sky point liquid production capacity - Google Patents
A kind of air precooler improving air separation unit sky point liquid production capacity Download PDFInfo
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- CN204944042U CN204944042U CN201520714139.2U CN201520714139U CN204944042U CN 204944042 U CN204944042 U CN 204944042U CN 201520714139 U CN201520714139 U CN 201520714139U CN 204944042 U CN204944042 U CN 204944042U
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Abstract
Improve an air precooler for air separation unit sky point liquid production capacity, comprise, air cooling compressor, chilled water inlet ductwork is established on its top, and the cooling water pipe and corresponding cooling water pump that connect extraneous water supply are established in middle part, and compressed air inlet pipeline is established in bottom; Air flow top of tower establishes the compressed air outlet pipeline connecting molecular sieve; It also comprises, water cooling tower, and its chilled water outlet pipeline is connected to air cooling compressor top freezer water inlet pipeline; This chilled water outlet pipeline is provided with chilled water pump; Heat-exchanger rig, its import and export pipeline is connected in the chilled water outlet pipeline of water cooling tower, establishes control valve respectively in import and export pipeline.The utility model reduces raw air and enters tower temperature, and because molecular sieve inlet temperature reduces, molecular sieve adsorption efficiency improves, and the molecular sieve working time can proper extension.Along with the reduction of molecular sieve inlet temperature, outlet molecular sieve temperature also declines thereupon, and the board-like temperature difference reduces, and cold damage declines, and liquid yield increases, and energy consumption declines.
Description
Technical field
The utility model belongs to air separation field, is specifically related to a kind of air precooler improving air separation unit sky point liquid production capacity.
Background technology
Present Large Air Separation Devices air compressor machine outlet needs to arrange air precooling system, is used for reducing air compressor machine place outlet temperature.Temperature when air separation unit wishes that compressed air enters device is low as far as possible, to reduce the thermic load etc. of saturated water content in air and main heat exchanger.And in fact air compressor machine can not realize isotherm compression, the air themperature after final stage compression can up to 80 ~ 90 DEG C.Therefore, air, after air compressor machine, before entering air separation unit, will cool air.Especially to molecular sieve adsorption purification process, because the adsorption capacity of molecular sieve is relevant with temperature, temperature is lower, and adsorption capacity is larger.Thus the design size that air themperature can reduce absorber is reduced.In the running, just can ensure clean-up effect, maybe can extend switching time, reduce switch cost.
Chilldown system forms primarily of two towers, and one is water cooling tower (being also water cooling tower), and one is air cooling compressor.The dirty nitrogen temperature come by separation equipment is lower, and water capacity is also less.Recirculated water higher with temperature in water cooling tower meets, and carries out heat exchange.Simultaneously due to the hygroscopic effect of dry nitrogen, take away moisture, and cooling water is due to the evaporation releasing latent heat just self-temperature reduction of moisture content.Through the water of nitrogen cooling, from water cooling tower out, be transported to air cooling compressor by water pump and spray, meet with compressed air, carry out heat exchange, compressed air temperature is reduced, saturation moisture content reduces, portion of water is separated out, thus the water yield in tower is increased, and water temperature raises.Because Shanghai Summer temperature is higher, customer demand nitrogen amount is comparatively large, and entering water-cooling tower nitrogen cannot by circulating water to technological requirement, and form larger threat to the normal operation of molecular sieve, the board-like temperature difference strengthens, and cold damage is more, and liquid yield declines, and energy consumption raises.
Summary of the invention
The purpose of this utility model is to provide a kind of air precooler improving air separation unit sky point liquid production capacity, reduces raw air and enters tower temperature, improve empty point liquid production capacity.
For achieving the above object, the technical solution of the utility model is:
Improve an air precooler for air separation unit sky point liquid production capacity, comprise, air cooling compressor, chilled water inlet ductwork is established on its top, and establish the cooling water pipe and corresponding cooling water pump that connect extraneous water supply in the middle part of it, compressed air inlet pipeline is established in its underpart; Air flow top of tower establishes the compressed air outlet pipeline connecting molecular sieve; It also comprises, water cooling tower, and its chilled water outlet pipeline is connected to described air cooling compressor top freezer water inlet pipeline; This chilled water outlet pipeline is provided with chilled water pump; Heat-exchanger rig, in the chilled water outlet pipeline that its import and export pipeline is connected to described water cooling tower or air cooling compressor chilled water inlet ductwork, arranges control valve in heat-exchanger rig import and export pipeline respectively.
Further, in described water cooling tower chilled water outlet pipeline chilled water pump export pipeline in establish one can be connected directly to the chilled water pipe for subsequent use of described air cooling compressor top freezer water inlet pipeline and corresponding control valve.
Preferably, described heat-exchanger rig is refrigerator or ammonia cooler.
The utility model passes through extraneous recirculated water after water-cooling tower cooling, enter heat-exchanger rig such as freezing unit more again to cool, recirculated water is through the process of water-cooling tower and heat-exchanger rig two procedures, and water temperature reaches technological requirement, and recirculated water enters air cooling tower and cools into molecular sieve air.Molecular sieve inlet temperature can reduce further, and the adsorption efficiency of molecular sieve improves greatly, the prolongs operating time of molecular sieve, ensure that empty point safe and stable operation.
The beneficial effects of the utility model:
1) this practical simplicity of design is practical, and easy construction, not only solves the impact of southern summer high temperature on air separation unit, and have very high economic worth.
2) maximal efficiency of molecular sieve can be played, reduce the waste of resource.
3) transformation is simple and easy to.
4) molecular sieve efficiency improves, and is conducive to air separation unit safety, stable operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Detailed description of the invention
See Fig. 1, a kind of air precooler improving air separation unit sky point liquid production capacity of the present utility model, comprise, air cooling compressor 1, chilled water inlet ductwork 101 is established on its top, establish the cooling water pipe 102 and corresponding cooling water pump 2 that connect extraneous water supply in the middle part of it, compressed air inlet pipeline 103 is established in its underpart; The compressed air outlet pipeline 104 connecting molecular sieve is established at air cooling compressor 1 top; It also comprises, water cooling tower 3, and its chilled water outlet pipeline 301 is connected to described air cooling compressor 1 top freezer water inlet pipeline 101; This chilled water outlet pipeline 301 is provided with chilled water pump 4; Heat-exchanger rig 5, in the chilled water outlet pipeline 301 that its import and export pipeline 501,502 is connected to described water cooling tower 3 or air cooling compressor 1 chilled water inlet ductwork 101, arranges control valve F1, F2 in heat-exchanger rig import and export pipeline 501,502 respectively.
Further, in described water cooling tower 3 chilled water outlet pipeline 301 chilled water pump 4 export pipeline in establish one can be connected directly to the chilled water pipe for subsequent use 304 of described air cooling compressor 1 top freezer water inlet pipeline 101 and corresponding control valve F3.
Preferably, described heat-exchanger rig 5 is refrigerator or ammonia cooler.
Recirculated water enters water cooling tower 3 by pipeline 302, carry out caloic exchange from top to down with from the nitrogen of pipeline 303 and dirty nitrogen, to pressurize through chilled water pump 4 through nitrogen and the cooled recirculated water of dirty nitrogen and be divided into two-way, first via recirculated water enters heat-exchanger rig 5-refrigerator by chilled water outlet pipeline 301 to heat-exchanger rig 5 inlet pipeline 501 and cools, finally enter air cooling compressor 1 cooled compressed air, to meet technological requirement by chilled water inlet ductwork 101; Second road recirculated water by chilled water pipe 304 for subsequent use and control valve F3 as the active redundancy pipeline entering air cooling compressor 1.
The utility model thoroughly solves the not good problem of water-cooling tower cooling effect, and extraneous recirculated water after water-cooling tower cooling, then enters freezing unit and again cools.Recirculated water is through the process of water-cooling tower and freezing unit two procedures, and water temperature reaches technological requirement, and recirculated water enters air cooling tower and cools into molecular sieve air.Due to the reduction of molecular sieve intake air temperature, the adsorption efficiency of molecular sieve will improve greatly, and working time of molecular sieve can proper extension, and the utilization of molecular sieve will be more reasonable, and energy consumption also will decline to some extent.In addition, due to the reduction of molecular sieve inlet temperature, outlet molecular sieve temperature also decreases, and the cold damage of air separation unit declines to some extent, and liquid yield improves.In addition, because the source of the gas after molecular sieve taken from by supercharger, supercharger intake air temperature also will decline to some extent, and supercharger efficiency will rise to some extent, and energy consumption also will decline to some extent.The utility model not only ensures molecular sieve and normally works, and also will greatly reduce the energy consumption of whole air separation unit.
Claims (3)
1. can improve an air precooler for air separation unit sky point liquid production capacity, comprise,
Air cooling compressor, chilled water inlet ductwork is established on its top, and establish the cooling water pipe and corresponding cooling water pump that connect extraneous water supply in the middle part of it, compressed air inlet pipeline is established in its underpart; Air flow top of tower establishes the compressed air outlet pipeline connecting molecular sieve; It is characterized in that, also comprise,
Water cooling tower, its chilled water outlet pipeline is connected to described air cooling compressor top freezer water inlet pipeline; This chilled water outlet pipeline is provided with chilled water pump;
Heat-exchanger rig, in the chilled water outlet pipeline that its import and export pipeline is connected to described water cooling tower or air cooling compressor chilled water inlet ductwork, arranges control valve in heat-exchanger rig import and export pipeline respectively.
2. can improve the air precooler of air separation unit sky point liquid production capacity as claimed in claim 1, it is characterized in that, in described water cooling tower chilled water outlet pipeline chilled water pump export pipeline in establish one can be connected directly to the chilled water pipe for subsequent use of described air cooling compressor top freezer water inlet pipeline and corresponding control valve.
3. can improve the air precooler of air separation unit sky point liquid production capacity as claimed in claim 1, it is characterized in that, described heat-exchanger rig is refrigerator or ammonia cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520714139.2U CN204944042U (en) | 2015-09-15 | 2015-09-15 | A kind of air precooler improving air separation unit sky point liquid production capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520714139.2U CN204944042U (en) | 2015-09-15 | 2015-09-15 | A kind of air precooler improving air separation unit sky point liquid production capacity |
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| Publication Number | Publication Date |
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| CN204944042U true CN204944042U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520714139.2U Expired - Fee Related CN204944042U (en) | 2015-09-15 | 2015-09-15 | A kind of air precooler improving air separation unit sky point liquid production capacity |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932627A (en) * | 2021-09-02 | 2022-01-14 | 河南旭阳光电科技有限公司 | Circulating system of air cooling tower |
-
2015
- 2015-09-15 CN CN201520714139.2U patent/CN204944042U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932627A (en) * | 2021-09-02 | 2022-01-14 | 河南旭阳光电科技有限公司 | Circulating system of air cooling tower |
| CN113932627B (en) * | 2021-09-02 | 2023-11-10 | 河南旭阳光电科技有限公司 | Circulation system of air cooling tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20200915 |
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| CF01 | Termination of patent right due to non-payment of annual fee |