CN219722379U - Air pre-cooling purification equipment for nitrogen circulation flow liquid air separation - Google Patents
Air pre-cooling purification equipment for nitrogen circulation flow liquid air separation Download PDFInfo
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- CN219722379U CN219722379U CN202320509082.7U CN202320509082U CN219722379U CN 219722379 U CN219722379 U CN 219722379U CN 202320509082 U CN202320509082 U CN 202320509082U CN 219722379 U CN219722379 U CN 219722379U
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- air
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- circulating water
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- 238000001816 cooling Methods 0.000 title claims abstract description 88
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 54
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 27
- 238000000926 separation method Methods 0.000 title claims abstract description 26
- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 238000000746 purification Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000004887 air purification Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 54
- 230000008929 regeneration Effects 0.000 claims description 54
- 238000011069 regeneration method Methods 0.000 claims description 54
- 239000004381 Choline salt Substances 0.000 claims description 7
- 230000003584 silencer Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000004064 recycling Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- 239000012263 liquid product Substances 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model provides air pre-cooling purification equipment for liquid air separation in a nitrogen circulation process, which comprises an air compressor, an air cooling tower, a water cooling tower and an air purification module; air is introduced from an inlet of the air compressor, and an outlet of the air compressor is connected with an air inlet of the air cooling tower through an air main pipe; the air passes through an air cooling tower to form precooled air, and the precooled air is led to an air purification module; the water cooling tower and the air cooling tower are respectively provided with a circulating water inlet and a circulating water outlet, the circulating water outlet on the water cooling tower is connected with the circulating water inlet on the air cooling tower through a first circulating water pipeline, and the circulating water inlet on the water cooling tower is connected with the circulating water outlet on the air cooling tower through a second circulating water pipeline; and the first circulating water pipeline is provided with a circulating water pump and a water cooling unit. The utility model can finish the precooling and purifying of the air at the same time, and has simple integral process and good process reliability, thereby being beneficial to popularization and use.
Description
Technical Field
The utility model relates to the technical field of liquid air separation, in particular to air pre-cooling purification equipment for liquid air separation in a nitrogen circulation flow.
Background
In recent years, the demand for industrial gases such as oxygen and nitrogen has increased greatly, and in particular, the demand for industrial gas products, especially liquid products, has increased year by year at a rate of 15% -20% per year under different operating conditions. The liquid air separation device has the advantages of convenient storage and supply, quality assurance, long conveying distance, wide range and the like, and is accepted by the market more and more, and has great market potential, so the use of the liquid air separation device has become the current trend. With the increasing convenience of national transportation, enterprises are increasingly under the hold of market in order to pursue more economic benefits, liquid air products have the characteristics of good product quality, low-cost transportation cost, higher cost performance, safe and convenient input and use and the like, and with the rapid and large-scale development of national steel, coal chemical industry and petrochemical industry, the supply of industrial gas is far from reaching the scale of the developed country that the centralized gas supply covers hundreds of kilometers, so that the preparation and sales of liquid products become a better choice for more gas companies. Meanwhile, the liquid product can better allocate the unbalanced supply and demand conditions of the products in each region, and along with the gradual standardization of the use of medical oxygen by the country, the production of medical oxygen by using a full-liquid air separation device also becomes the mainstream.
The liquid air separation equipment adopts a low-temperature rectification separation process method, and the core of the liquid air separation equipment is that the separation of all components in an air mixture is realized in a rectifying tower by utilizing the difference of boiling points of all components in the air, so that liquefied oxygen, liquefied nitrogen or other liquefied gas products are obtained through separation.
The raw material of the liquid air separation equipment in the nitrogen circulation flow is outside air, the air is pre-cooled and purified in the first step of the whole process flow, and the pre-cooling aims at cooling the air to the temperature of about 10 ℃ so as to facilitate the subsequent low-temperature rectification; while the purpose of purification is to remove some of the impurity gases from the air.
The existing air pre-cooling and purifying device has complex process and poor process reliability.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, provides air pre-cooling purification equipment for liquid air separation in a nitrogen circulation flow, and has the advantages of simple overall process and good reliability.
The utility model aims at realizing the following technical scheme: an air pre-cooling purification device for liquid air separation in a nitrogen circulation flow comprises an air compressor C1001, an air cooling tower E1007, a water cooling tower E1060 and an air purification module;
air is introduced from an inlet of the air compressor C1001, and an outlet of the air compressor C1001 is connected with an air inlet of the air cooling tower E1007 through an air main pipe; the air is cooled by the air cooling tower E1007 to form precooled air, and the precooled air is discharged from an air outlet on the air cooling tower E1007 and is led to an air purification module;
the water cooling tower E1060 and the air cooling tower E1007 are respectively provided with a circulating water inlet and a circulating water outlet, the circulating water outlet of the water cooling tower E1060 is connected with the circulating water inlet of the air cooling tower E1007 through a first circulating water pipeline, and the circulating water inlet of the water cooling tower E1060 is connected with the circulating water outlet of the air cooling tower E1007 through a second circulating water pipeline; the first circulating water pipeline is provided with a circulating water pump P1061 and a water cooling unit Y1001;
the air purification module at least comprises two air purifiers, and the air purifiers alternately purify the precooled air.
Preferably, an air filter F1001 is provided at an inlet of the air compressor C1001.
Preferably, the air manifold is provided with an air release valve and an air compressor release muffler S1001.
Preferably, the air cooling tower E1007 is a spray air cooling tower.
Preferably, the air manifold is provided with a heat exchanger W1.
Preferably, the air purification module comprises a first air purifier D1001 and a second air purifier D1002, wherein an air outlet on an air cooling tower E1007 is connected with an inlet on the first air purifier D1001 through a first air inlet pipeline, and an air outlet on the air cooling tower E1007 is connected with an inlet on the second air purifier D1002 through a second air inlet pipeline; the first air inlet pipeline is provided with a first air valve P01, and the second air inlet pipeline is provided with a second air valve P02; a first air exhaust pipeline is arranged on the outlet of the first air purifier D1001, and a second air exhaust pipeline is arranged on the outlet of the second air purifier D1002; the first air discharge pipe is provided with a third air valve P03, and the second air discharge pipe is provided with a fourth air valve P04.
Preferably, a first regeneration gas inlet pipe is connected to the outlet of the first air purifier D1001, a second regeneration gas inlet pipe is connected to the outlet of the second air purifier D1002, the first regeneration gas inlet pipe and the second regeneration gas inlet pipe are connected to the outlet of the regeneration heater E1001, and the regeneration gas is introduced from the inlet of the regeneration heater E1001; a fifth air valve P05 and a second air valve P06 are respectively arranged on the first regeneration gas inlet pipe and the second regeneration gas inlet pipe; the inlet of the first air purifier D1001 is connected to a first regeneration gas discharge pipe, the inlet of the second air purifier D1002 is connected to a second regeneration gas discharge pipe, and the first regeneration gas discharge pipe and the second regeneration gas discharge pipe are respectively provided with a seventh air valve P07 and an eighth air valve P08.
Preferably, the regeneration gas is nitrogen.
Preferably, the first regeneration gas discharge pipe and the second regeneration gas discharge pipe are simultaneously connected to the dirty nitrogen muffler S1005.
The beneficial effects of the utility model are as follows: the utility model can finish the precooling and purifying of the air at the same time, and has simple integral process and good process reliability, thereby being beneficial to popularization and use.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
As shown in FIG. 1, the air pre-cooling purification device for liquid air separation in a nitrogen circulation flow comprises an air compressor C1001, an air cooling tower E1007, a water cooling tower E1060 and an air purification module. Wherein, air is introduced from the inlet of the air compressor C1001, and the outlet of the air compressor C1001 is connected with the air inlet of the air cooling tower E1007 through an air main pipe; an air filter F1001 is provided at an inlet of the air compressor C1001 for filtering some impurities contained in the outside air. An air main pipe is provided with an air vent valve and an air compressor air vent silencer S1001. Air is compressed by the air compressor C1001 and then is led to the air cooling tower E1007 through the air manifold.
The air manifold is provided with a heat exchanger W1. The heat exchanger W1 is provided with a cooling water inlet and a cooling water outlet, and air is subjected to heat exchange with the cooling water when passing through the heat exchanger W1, so that the air is primarily cooled.
The air is cooled by the air cooling tower E1007 to form precooled air, and the precooled air is discharged from an air outlet on the air compressor C1001 and is led to the air purification module. The circulating water outlets on the water cooling tower E1060 are connected with the circulating water inlet on the air cooling tower E1007 through a first circulating water pipeline, and the circulating water inlet on the water cooling tower E1060 is connected with the circulating water outlet on the air cooling tower E1007 through a second circulating water pipeline; the first circulating water pipeline is provided with a circulating water pump P1061 and a water cooling unit Y1001. In the utility model, the air cooling tower E1007 is a spray type air cooling tower.
The circulating water cooled by the water cooling tower E1060 enters the air cooling tower E1007 after passing through the water cooling unit Y1001 under the drive of the circulating water pump P1061, and the water cooling unit Y1001 cools the circulating water to make the temperature of the circulating water reach about 10 ℃; circulating water is sprayed downwards from the upper end of the air cooling tower E1007 in a spraying mode; air enters from an air inlet at the lower part of the air cooling tower E1007, and the air entering the air cooling tower E1007 is contacted with circulating water sprayed downwards, so that the air is cooled to form precooled air, and the temperature of the precooled air is about 13 ℃; the precooled air is discharged from an air outlet in the upper portion of the air cooling tower E1007. The circulating water sprayed downward is accumulated at the lower end of the air cooling tower E1007, and the circulating water is discharged from a circulating water outlet at the lower end of the air cooling tower E1007 and is returned to the water cooling tower E1060 through a second circulating water pipe.
The air purification module at least comprises two air purifiers, and the air purifiers alternately purify the precooled air. In the utility model, the air purification module comprises two air purifiers, namely a first air purifier D1001 and a second air purifier D1002, wherein an air outlet on an air cooling tower E1007 is connected with an inlet on the first air purifier D1001 through a first air inlet pipeline, and an air outlet on the air cooling tower E1007 is connected with an inlet on the second air purifier D1002 through a second air inlet pipeline; the first air inlet pipeline is provided with a first air valve P01, and the second air inlet pipeline is provided with a second air valve P02; a first air discharge pipeline is arranged on the outlet of the first air purifier D1001, and a second air discharge pipeline is arranged on the outlet of the second air purifier D1002; the first air discharge pipe is provided with a third air valve P03, and the second air discharge pipe is provided with a fourth air valve P04. The first air purifier D1001 and the second air purifier D1002 are both internally provided with molecular sieves for filtering specific kinds of gas molecules in the air.
The first air purifier D1001 and the second air purifier D1002 in the air purification module are controlled to work alternately through the first air valve P01, the second air valve P02, the third air valve P03 and the fourth air valve P04; one of the air purifiers is in an operating state, and the other air purifier is in a regeneration state. When purifying air, pre-cooling air is introduced from an inlet on the first air purifier D1001 or the second air purifier D1002, and purified pre-cooling air is discharged from an outlet.
The outlet of the first air purifier D1001 is connected with a first regeneration gas inlet pipe, the outlet of the second air purifier D1002 is connected with a second regeneration gas inlet pipe, the first regeneration gas inlet pipe and the second regeneration gas inlet pipe are connected with the outlet of the regeneration heater E1001, and the regeneration gas is introduced from the inlet of the regeneration heater E1001; a fifth air valve P05 and a second air valve P06 are respectively arranged on the first regeneration gas inlet pipe and the second regeneration gas inlet pipe; the inlet of the first air purifier D1001 is connected with a first regeneration gas discharge pipe, the inlet of the second air purifier D1002 is connected with a second regeneration gas discharge pipe, and the first regeneration gas discharge pipe and the second regeneration gas discharge pipe are respectively provided with a seventh air valve P07 and an eighth air valve P08; the first regeneration gas discharge pipe and the second regeneration gas discharge pipe are simultaneously connected to the dirty nitrogen muffler S1005.
In the present utility model, the regeneration gas is nitrogen.
Regenerating the first air purifier D1001 and the second air purifier D1002 by a regeneration gas (nitrogen); the regeneration gas reaches a certain temperature after passing through the heating of the regeneration heater E1001, then enters from an outlet on the first air purifier D1001 or the second air purifier D1002, is discharged from an inlet, reversely washes the first air purifier D1001 or the second air purifier D1002, and the discharged polluted nitrogen is discharged from a first regeneration gas discharge pipe or a second regeneration gas discharge pipe.
The utility model can finish the precooling and purifying of the air at the same time, and has simple integral process and good process reliability, thereby being beneficial to popularization and use.
The present utility model is not limited to the above-mentioned preferred embodiments, and any person who can obtain other various products under the teaching of the present utility model can make any changes in shape or structure, and all the technical solutions that are the same or similar to the present utility model fall within the scope of the present utility model.
Claims (9)
1. The air pre-cooling purification device for the liquid air separation in the nitrogen circulation process is characterized by comprising an air compressor C1001, an air cooling tower E1007, a water cooling tower E1060 and an air purification module;
air is introduced from an inlet of the air compressor C1001, and an outlet of the air compressor C1001 is connected with an air inlet of the air cooling tower E1007 through an air main pipe; the air is cooled by the air cooling tower E1007 to form precooled air, and the precooled air is discharged from an air outlet on the air cooling tower E1007 and is led to an air purification module;
the water cooling tower E1060 and the air cooling tower E1007 are respectively provided with a circulating water inlet and a circulating water outlet, the circulating water outlet of the water cooling tower E1060 is connected with the circulating water inlet of the air cooling tower E1007 through a first circulating water pipeline, and the circulating water inlet of the water cooling tower E1060 is connected with the circulating water outlet of the air cooling tower E1007 through a second circulating water pipeline; the first circulating water pipeline is provided with a circulating water pump P1061 and a water cooling unit Y1001;
the air purification module at least comprises two air purifiers, and the air purifiers alternately purify the precooled air.
2. The air pre-cooling purification apparatus for nitrogen circulation flow liquid air separation according to claim 1, wherein an air filter F1001 is provided at an inlet of the air compressor C1001.
3. The air pre-cooling purification device for nitrogen circulation flow liquid air separation according to claim 1, wherein an air main pipe is provided with an air vent valve and an air compressor vent silencer S1001.
4. The air pre-cooling purification apparatus for nitrogen recycle stream liquid air separation according to claim 1, wherein the air cooling tower E1007 is a spray air cooling tower.
5. The air pre-cooling purification apparatus for nitrogen recycle stream liquid air separation according to claim 1, wherein a heat exchanger W1 is provided on the air manifold.
6. The air pre-cooling purification apparatus for nitrogen recycling flow liquid air separation according to any one of claims 1-5, wherein the air purification module comprises a first air purifier D1001, a second air purifier D1002, wherein the air outlet on the air cooling tower E1007 is connected to the inlet on the first air purifier D1001 through a first air inlet pipe, and the air outlet on the air cooling tower E1007 is connected to the inlet on the second air purifier D1002 through a second air inlet pipe; the first air inlet pipeline is provided with a first air valve P01, and the second air inlet pipeline is provided with a second air valve P02; a first air exhaust pipeline is arranged on the outlet of the first air purifier D1001, and a second air exhaust pipeline is arranged on the outlet of the second air purifier D1002; the first air discharge pipe is provided with a third air valve P03, and the second air discharge pipe is provided with a fourth air valve P04.
7. The air pre-cooling purification apparatus for nitrogen recycle stream liquid air separation according to claim 6, wherein a first regeneration gas inlet pipe is connected to an outlet of the first air purifier D1001, a second regeneration gas inlet pipe is connected to an outlet of the second air purifier D1002, the first regeneration gas inlet pipe and the second regeneration gas inlet pipe are connected to an outlet of the regeneration heater E1001, and the regeneration gas is introduced from an inlet of the regeneration heater E1001; a fifth air valve P05 and a second air valve P06 are respectively arranged on the first regeneration gas inlet pipe and the second regeneration gas inlet pipe; the inlet of the first air purifier D1001 is connected to a first regeneration gas discharge pipe, the inlet of the second air purifier D1002 is connected to a second regeneration gas discharge pipe, and the first regeneration gas discharge pipe and the second regeneration gas discharge pipe are respectively provided with a seventh air valve P07 and an eighth air valve P08.
8. The air pre-chilling purification apparatus for a nitrogen recycle stream liquid air separation according to claim 7, wherein said regeneration gas is nitrogen.
9. The air pre-cooling purification apparatus for nitrogen recirculation flow liquid air separation as recited in claim 7, wherein said first regeneration gas discharge pipe and second regeneration gas discharge pipe are simultaneously connected to a dirty nitrogen silencer S1005.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320509082.7U CN219722379U (en) | 2023-03-09 | 2023-03-09 | Air pre-cooling purification equipment for nitrogen circulation flow liquid air separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320509082.7U CN219722379U (en) | 2023-03-09 | 2023-03-09 | Air pre-cooling purification equipment for nitrogen circulation flow liquid air separation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219722379U true CN219722379U (en) | 2023-09-22 |
Family
ID=88054277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320509082.7U Active CN219722379U (en) | 2023-03-09 | 2023-03-09 | Air pre-cooling purification equipment for nitrogen circulation flow liquid air separation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219722379U (en) |
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2023
- 2023-03-09 CN CN202320509082.7U patent/CN219722379U/en active Active
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