CN203899398U - Molecular sieve purification system suitable for large-scale and ultra-large-scale air separation - Google Patents
Molecular sieve purification system suitable for large-scale and ultra-large-scale air separation Download PDFInfo
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- CN203899398U CN203899398U CN201420288990.9U CN201420288990U CN203899398U CN 203899398 U CN203899398 U CN 203899398U CN 201420288990 U CN201420288990 U CN 201420288990U CN 203899398 U CN203899398 U CN 203899398U
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- molecular sieve
- controlled valve
- air separation
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- 239000002808 molecular sieve Substances 0.000 title claims abstract description 49
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000926 separation method Methods 0.000 title claims abstract description 22
- 238000000746 purification Methods 0.000 title claims abstract description 17
- 230000008929 regeneration Effects 0.000 claims description 17
- 238000011069 regeneration method Methods 0.000 claims description 17
- 239000006096 absorbing agent Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 6
- 230000003584 silencer Effects 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model discloses a molecular sieve purification system suitable for large-scale and ultra-large-scale air separation. Three molecular sieve adsorbers are connected in parallel, in a normal operating condition, any two of the three molecular sieve adsorbers are used for adsorption, and the adsorption capacities of any two molecular sieve adsorbers are respectively 50% of total adsorption capacity, so that the risk of nonuniform gas distribution caused by overlarge diameters of the adsorbers can be effectively reduced, and the equipment manufacturing and transporting difficulty is reduced.
Description
Technical field
The utility model relates to empty minute technical field, is specifically a kind ofly applicable to the molecular sieve purification system that Large Air Separation Devices, super-huge sky are divided.
Background technology
In recent years, along with the development of Coal Chemical Industry, the air separation technology that the cryogenic separation of take is master is developed rapidly, and the scale of single cover air separation unit constantly increases.It is reported, the oxygen production capacity of single cover air separation unit has surpassed 120000Nm3/h.
The formation of the molecular sieve purification system of conventional air separation unit is generally as follows:
As shown in Figure 1, molecular sieve adsorber A, B, regeneration steam heater, program-controlled valve system A1, A2, B1, B2, C1, C2, D1, D2, when air separation unit is worked, wherein an absorber is for absorption, and another is for regeneration.
Along with sky divides the expansion of scale, the diameter of molecular sieve adsorber is increasing, and along with diameter increases, air is more and more difficult to realize and is uniformly distributed in absorber, and the adsorption effect of molecular sieve adsorber also can variation.
In addition, the expansion of absorber diameter, brings great difficulty to the manufacture of equipment, transportation, and a lot of equipment belongs to the equipment of transfiniting or the on-the-spot processing of needs.
In the molecular sieve purification system of successful operation, oxygen production capacity is very ripe in the empty fractionated molecule sieve cleaning system of 60000Nm3/h and following scale.
Utility model content
The purpose of this utility model is to provide a kind of molecular sieve purification system that Large Air Separation Devices, super-huge sky are divided that is applicable to, and is not strengthening on the basis of molecular sieve purification device size, guarantees the adsorption effect of molecular sieve purification device, promotes the air-filtering ability of air separation unit.
The technical solution of the utility model is as follows:
A kind of Large Air Separation Devices that is applicable to, the molecular sieve purification system that super-huge sky divides, include regeneration steam heater, first, two, type three-molecular screen alternating absorber and program-controlled valve A1, A2, A3, B1, B2, B3, C1, C2, C3, D1, D2, D3, it is characterized in that: described first, two, one end of type three-molecular screen alternating absorber is connected respectively described program-controlled valve A1 by pipeline on the one hand, A2, A3 and be in parallel after lead to external air cooling tower, by pipeline, be connected respectively described program-controlled valve D1 respectively on the other hand, D2, D3 and be in parallel after be connected with again silencer, the other end of first, second and third molecular sieve adsorber by pipeline, be connected respectively described program-controlled valve B1, B2, B3 on the one hand and be in parallel after lead to follow-up system, by pipeline, be connected respectively described program-controlled valve C1, C2, C3 respectively on the other hand and be in parallel after be connected with described regeneration steam heater again.
Described be applicable to the molecular sieve purification system that Large Air Separation Devices, super-huge sky are divided, it is characterized in that: the import of described regeneration steam heater is connected with the air inlet pipe of leading to ice chest.
When air separation unit normally moves, two in three molecular sieve adsorbers for carrying out adsorption operations, and one for carrying out regenerative operation, and more particularly, when first and second molecular sieve adsorber is used for adsorbing, type three-molecular screen alternating absorber is for regeneration; After a switching cycle, second and third molecular sieve adsorber will be for absorption, and the first molecular sieve adsorber is for regeneration; While arriving next switching cycle again, first and third molecular sieve adsorber is for absorption, and the second molecular sieve adsorber, for regeneration, so circulates.
The beneficial effects of the utility model:
The utility model is connected in parallel three molecular sieve adsorbers, when wherein two molecular sieve adsorbers are for adsorption operations, other one for regenerative operation, like this, for oxygen production capacity, be 120000Nm
3the air separation unit of/h, every molecular sieve adsorber only need be born 50% absorption load, is equivalent to oxygen production capacity 60000Nm
3the molecular sieve adsorption amount of the air separation unit of/h, not only avoided because strengthening the problems such as expense that molecular sieve purification device size causes, technology, transportation, and whole flow operations is simple, convenient, when guaranteeing molecular sieve adsorption effect, has also greatly promoted the detergent power of air separation unit.
Accompanying drawing explanation
The molecular sieve purification system construction drawing of the conventional air separation unit of Fig. 1.
Fig. 2 is the utility model structural representation.
The specific embodiment
Referring to Fig. 2, a kind of Large Air Separation Devices that is applicable to, the molecular sieve purification system that super-huge sky divides, include regeneration steam heater 4, first, two, type three-molecular screen alternating absorber 1, 2, 3 and program-controlled valve A1, A2, A3, B1, B2, B3, C1, C2, C3, D1, D2, D3, first, two, type three-molecular screen alternating absorber 1, 2, one end of 3 is connected respectively program-controlled valve A1 by pipeline on the one hand, A2, A3 and be in parallel after lead to external air cooling tower, by pipeline, be connected respectively program-controlled valve D1 respectively on the other hand, D2, D3 and be in parallel after be connected with again silencer 5, the other end of first, second and third molecular sieve adsorber 1,2,3 by pipeline, be connected respectively program-controlled valve B1, B2, B3 on the one hand and be in parallel after lead to follow-up system, by pipeline, be connected respectively program-controlled valve C1, C2, C3 respectively on the other hand and be in parallel after be connected with regeneration steam heater 4 again.
In the utility model, the import of regeneration steam heater 4 is connected with the air inlet pipe of leading to ice chest.
Compressed air from air cooling tower enters first and second molecular sieve adsorber 1,2 through program-controlled valve A1, A2, after carbon dioxide removal, moisture and other impurity, by program-controlled valve B1, B2, gathers, and then enters follow-up system.The dirty nitrogen coming from ice chest enters type three-molecular screen alternating absorber 3 by program-controlled valve C3 entering steam heater 4 heating, the dirty nitrogen that goes out type three-molecular screen alternating absorber 3 removes air releasing silencer 5 by program-controlled valve D3, in this stage, first and second molecular sieve adsorber 1,2 is in absorption phase, and type three-molecular screen alternating absorber 3 is in the regeneration stage.
The next work period, enters second and third molecular sieve adsorber 2,3 from the compressed air of air cooling tower through program-controlled valve A2, A3, after carbon dioxide, moisture and other impurity, by program-controlled valve B2, B3, gathers, and then enters follow-up system.The dirty nitrogen coming from ice chest enters the first molecular sieve adsorber 1 by program-controlled valve C1 entering steam heater 4 heating, the dirty nitrogen that goes out the first molecular sieve adsorber 1 removes air releasing silencer 5 by program-controlled valve D1, in this stage, second and third molecular sieve adsorber 2,3 is in absorption phase, and the first molecular sieve adsorber 1 is in the regeneration stage.
Next work period again, from the compressed air of air cooling tower, through program-controlled valve A1, A3 enters first and third molecular sieve adsorber 1,3, after carbon dioxide removal, moisture and other impurity, by program-controlled valve B1, B3, gathers, and then enters follow-up system.The dirty nitrogen coming from ice chest enters the second molecular sieve adsorber 2 by program-controlled valve C2 entering steam heater 4 heating, the dirty nitrogen that goes out the second molecular sieve adsorber 2 removes emptying noise elimination tower 5 by program-controlled valve D2, in this stage, first and third molecular sieve adsorber 1,3 is in absorption phase, and the second molecular sieve adsorber 2 is in the regeneration stage.
So circulation, to reach the object of purification of compressed air.
It should be noted that, when the number of units of molecular sieve adsorber is increased to four, five when even more, also belong to protection domain of the present utility model.
Claims (2)
1. one kind is applicable to Large Air Separation Devices, the molecular sieve purification system that super-huge sky divides, include regeneration steam heater, first, two, type three-molecular screen alternating absorber and program-controlled valve A1, A2, A3, B1, B2, B3, C1, C2, C3, D1, D2, D3, it is characterized in that: described first, two, one end of type three-molecular screen alternating absorber is connected respectively described program-controlled valve A1 by pipeline on the one hand, A2, A3 and be in parallel after lead to external air cooling tower, by pipeline, be connected respectively described program-controlled valve D1 respectively on the other hand, D2, D3 and be in parallel after be connected with again silencer, the other end of first, second and third molecular sieve adsorber by pipeline, be connected respectively described program-controlled valve B1, B2, B3 on the one hand and be in parallel after lead to follow-up system, by pipeline, be connected respectively described program-controlled valve C1, C2, C3 respectively on the other hand and be in parallel after be connected with described regeneration steam heater again.
2. be according to claim 1ly applicable to the molecular sieve purification system that Large Air Separation Devices, super-huge sky are divided, it is characterized in that: the import of described regeneration steam heater is connected with the air inlet pipe of leading to ice chest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420288990.9U CN203899398U (en) | 2014-05-30 | 2014-05-30 | Molecular sieve purification system suitable for large-scale and ultra-large-scale air separation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420288990.9U CN203899398U (en) | 2014-05-30 | 2014-05-30 | Molecular sieve purification system suitable for large-scale and ultra-large-scale air separation |
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| Publication Number | Publication Date |
|---|---|
| CN203899398U true CN203899398U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420288990.9U Expired - Lifetime CN203899398U (en) | 2014-05-30 | 2014-05-30 | Molecular sieve purification system suitable for large-scale and ultra-large-scale air separation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576520A (en) * | 2017-09-22 | 2018-01-12 | 中国华能集团公司 | A kind of device and method for determining the space division purification system regeneration period |
-
2014
- 2014-05-30 CN CN201420288990.9U patent/CN203899398U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576520A (en) * | 2017-09-22 | 2018-01-12 | 中国华能集团公司 | A kind of device and method for determining the space division purification system regeneration period |
| CN107576520B (en) * | 2017-09-22 | 2023-12-05 | 中国华能集团公司 | Device and method for determining regeneration period of air separation purification system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |