CN214075855U - Adsorption type compressed gas continuous drying device - Google Patents
Adsorption type compressed gas continuous drying device Download PDFInfo
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- CN214075855U CN214075855U CN202022647862.7U CN202022647862U CN214075855U CN 214075855 U CN214075855 U CN 214075855U CN 202022647862 U CN202022647862 U CN 202022647862U CN 214075855 U CN214075855 U CN 214075855U
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Abstract
An adsorption type compressed gas continuous drying device comprises an adsorption device and a regeneration device, wherein the adsorption device comprises a carbon dioxide compressor, the carbon dioxide compressor is connected with a water cooler, the water cooler is connected with a separator, one path of the separator is connected with a drainage ditch, the other path of the separator enters a No. 1 filter for separation, the output end of the No. 1 filter is divided into three paths, the liquid output end of the No. 1 filter enters the drainage ditch, one path of the gas output end of the No. 1 filter enters a tower body, and an A tower is connected with a No. 2 filter; the other path of the gas output end of the No. 1 filter is connected with a tower B, and the tower B is connected with a No. 2 filter; the regeneration device comprises a tower B, the tower B is connected with a pressure relief hole for pressure relief, and the output end of the pressure relief hole is connected with a silencer; the top of the tower A and the tower B are connected with an electric heater; the No. 2 filter is in liquid connection with the drainage ditch, and the gas output end of the No. 2 filter enters a user. The utility model discloses it is fast to have a rate of heating, and regeneration is thoroughly clean, guarantees the leak source temperature of export.
Description
Technical Field
The utility model relates to a carbon dioxide compressor technical field, in particular to dry device of absorption formula compressed gas continuity.
Background
Carbon dioxide carries moisture in the preparation use, needs dry the dewatering with it, gets into the compressor and uses, and the compression back still takes water, and gas takes water to throttle easily and can not satisfy user's demand, leads to valve and instrument inefficacy. Carbon dioxide dryers are commonly used in the industry to dry carbon dioxide. However, when the dried molecular sieve absorbs enough water, the dried molecular sieve cannot be dried and regenerated, but the moisture in the molecular sieve is blown out and removed, and only regeneration and drying are carried out. The existing carbon dioxide dryer comprises A, B two towers, when one tower is in drying operation, the molecular sieve of the other tower is subjected to regeneration and desorption, and repeated regeneration and cyclic operation in a period is realized.
The device is composed of a water cooler, a separator, an electric heater, two filters, two drying towers which are used alternately, a plurality of groups of valves and a PLC control cabinet, and dry carbon dioxide gas generated in the drying towers is used as users (instrument gas and conveying gas).
The regeneration of the existing molecular sieve adopts three methods of heating steam by an electric heater or heating waste heat of high-temperature gas obtained after nitrogen and carbon dioxide are compressed, and the three heating methods have the comparative characteristics that: 1. the waste heat of the gas is utilized for heating and cyclic utilization, so that the heat is not lost, the energy is saved, the consumption is reduced, the economic performance and the environmental protection are realized, the operation difficulty is enhanced, the pressure fluctuation influences the regeneration tower, the requirement on the process is strict, and the dew point temperature cannot be ensured in winter; 2. the electric heater heats steam, and high-temperature steam is sent into the desicator, makes the active regeneration of molecular sieve, but high-temperature steam can become moisture after the cold shortage, causes the regeneration incomplete, and the result is that moisture can't thoroughly separate, can't satisfy user's demand.
Disclosure of Invention
In order to overcome the not enough of above-mentioned prior art, the utility model aims to provide a dry device of absorption formula compressed gas continuity, it is fast to have a rate of heating, and regeneration is thoroughly clean, guarantees the leak source temperature of export, adopts the electrical heater heating nitrogen gas to get into the regeneration system of carbon dioxide desicator molecular sieve.
In order to realize the purpose, the utility model discloses a technical scheme is:
an adsorption type compressed gas continuous drying device comprises an adsorption device and a regeneration device;
the adsorption device comprises a carbon dioxide compressor 1, the output end of the carbon dioxide compressor 1 is connected with a water cooler 2, the output end of the water cooler 2 is connected with a separator 3, the output end of the separator 3 is divided into two paths, one path is connected with a drainage ditch through a blowdown valve I4, the other path enters a No. 1 filter 6 for separation through a separator outlet valve 5, the output end of the No. 1 filter 6 is divided into three paths, the liquid output end of the No. 1 filter 6 enters the drainage ditch through a blowdown valve II 7, the gas output end of the No. 1 filter 6 enters a tower body through an inlet valve 9 of an A tower 8 at the bottom of the A tower, and the top of the A tower 8 is connected with a No;
the gas output end of the other path of the No. 1 filter 6 is connected with a B tower 14 through a B tower inlet valve 25, and the output end of the top of the B tower 14 is connected with a No. 2 filter 11 through a B tower check valve 27;
the regeneration device comprises a tower B14, the bottom of the tower B14 is connected with a pressure relief hole 16 through an exhaust valve 15 for pressure relief, a pressure relief valve 17 is arranged on the pressure relief hole 16 in parallel, and the output ends of the pressure relief hole 16 and the pressure relief valve 17 are connected with a silencer 20;
the output ends of the top of the tower A8 and the top of the tower B14 are connected with the output end of an electric heater 19, and the input end of the electric heater 19 receives nitrogen through a nitrogen valve 18;
the liquid output end of the No. 2 filter 11 is connected with a drainage ditch through a drain valve III 12, and the gas output end of the No. 2 filter 11 enters a user through a user hand valve 13.
The three-stage outlet part of the carbon dioxide compressor 1 is provided with high-temperature CO with water2The gas is cooled by connecting the hand valve 26 to the water cooler 2.
The separator 3 is connected in one path to the output of the inlet hand valve 13 via a bypass valve 22.
And a pressure equalizing valve 21 is arranged between the output ends of the tower B14 and the tower A8.
The gas output end of the No. 1 filter 6 is led to be connected with the pressure relief hole 16 and the pressure relief valve 17 through the A tower exhaust valve 24 after passing through the A tower inlet valve 9, and the gas output end of the No. 1 filter 6 is led to be connected with the pressure relief hole 16 and the pressure relief valve 17 through the B tower exhaust valve 15 after passing through the B tower inlet valve 25.
The utility model has the advantages that:
the continuous adsorption compressed gas drying device has fast heating speed and complete regeneration, and can ensure the leakage point temperature of the outlet to be-70-40 deg.c, especially in winter, and the electric heater is used to heat nitrogen to enter the molecular sieve regenerating system of carbon dioxide drying tower.
The drying device adopts an electric heater to heat nitrogen, high-temperature nitrogen is sent into the drying tower to regenerate the activity of the molecular sieve, and clean nitrogen is used for cooling without generating moisture, so that the molecular sieve is regenerated efficiently.
The continuous carbon dioxide drying device is adopted, the treatment capacity is 400-600Nm3/h for drying, the consumption of regenerated nitrogen is low, and the general dosage is 50-60Nm 3/h.
The continuous drying device for the adsorption type compressed gas adopts two drying towers to alternately operate, one drying tower is used for adsorption and one regeneration, and the drying towers are switched once for recycling within 2-4 hours, so that the heat loss is reduced.
The carbon dioxide drying device filter is convenient to maintain, and the requirement of a user is not influenced by interruption of gas due to bypass adjustment.
In the adsorption and regeneration processes of the A drying tower and the B drying tower, the gas is clean, and the pressure is stable to meet the user requirements.
Drawings
FIG. 1 is the overall structure of the device of the present invention
In the figure: 1. a carbon dioxide compressor; 2. a water cooler; 3. a separator; 4. a first blowdown valve; 5. a separator outlet valve; 6. 1# filter; 7. a second blow-down valve; 8. tower A; 9. an inlet valve to column a; 10. a column a check valve; 11. a No. 2 filter; 12. a blow-down valve III; 13. entering a user hand valve; 14. tower B; 15. a tower B exhaust valve; 16. a pressure relief vent; 17. a pressure relief valve; 18. A nitrogen gas valve; 19. an electric heater; 20. a muffler; 21. a pressure equalizing valve; 22. a bypass valve; 23. Conducting drenching; 24. a tower exhaust valve; 25. a column B inlet valve; 26. a chiller inlet valve; 27. B tower check valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1: the utility model relates to a working process of a dryer of an adsorption type compressed gas continuous drying device, which is characterized in that a carbon dioxide dryer utilizes pressure swing adsorption and temperature swing adsorption regeneration circulation to make compressed carbon dioxide alternately flow through A, B two towers filled with adsorbents, namely, the carbon dioxide dryer adsorbs (works) at normal temperature and high steam partial pressure and analyzes (regenerates) at higher temperature and low steam partial pressure. The water absorbed by the adsorbent in the adsorption process can be thoroughly removed in the regeneration process under the combined action of two mechanisms of thermal diffusion and low partial pressure of high-quality regeneration gas (nitrogen heating).
A method for continuous drying of adsorption type compressed gas comprises the following steps;
adsorbing high-temperature CO with water at the three-stage outlet part of the carbon dioxide compressor 1 by the A tower 82The gas is controlled by the hand valve 26 to enter the water cooler 2 for cooling, then enters the separator 3, most of water is separated and discharged to the ground through the first blowdown valve 4, the gas carrying a small amount of moisture enters the No. 1 filter 6 for separation through the outlet valve 5 of the separator, and part of water is filtered and discharged to the ground through the second blowdown valve 7And (3) the filtered gas enters the tower body through an inlet valve 9 of the tower A at the bottom of the tower A8 for adsorption, the dried gas enters a No. 2 filter 11 for filtration through a check valve 10, the filtered water is discharged to the trench through a blow-down valve III 12, and the dried gas enters a user (instrument gas and conveying gas) through a user inlet hand valve 13 (instrument blowing station for back blowing gas acting on the instrument).
And (3) regenerating the tower B14, namely opening an exhaust valve 15 at the bottom of the tower B14, releasing pressure through a pressure release hole 16 bypass, opening a main pressure release pipeline pressure release valve 17 when the pressure is released to 0.4Mpa to release the pressure of the tower B14, simultaneously opening a regenerated nitrogen valve 18 and an electric heater 19 to regenerate the tower B14, and discharging the regenerated gas at a high point through a silencer 20 at the bottom of the tower B.
And (3) equalizing the pressure of the A/B tower, closing the electric heater 19 after heating is finished, performing blowing cooling operation on the B tower 14, closing the regenerated nitrogen valve 18 after blowing cooling is finished, opening the pressure equalizing valve 21, replacing the B tower 14 by using carbon dioxide gas of the A tower 8, closing the pressure relief valves 15, 16 and 17 of the B tower 14 after replacement is finished, enabling the B tower 14 to enter an equalizing state, gradually increasing the pressure to be the same as that of the A tower 8, closing the pressure equalizing valve 21, and finishing equalizing the pressure.
The electric heater 19 heats the regeneration tower B14, the temperature is controlled to be about 120 ℃ and is consistent with the temperature of the gas at the three-stage outlet of the carbon dioxide compressor 1, if the temperature is higher than 120 ℃, the electric heater 19 is closed, the power consumption loss is reduced, and the requirements of users are met.
If the filter is in failure, the hand valve 5 of the filter 6 in the No. 1 is closed, the hand valve 13 at the outlet of the filter 11 in the No. 2 is closed, the bypass hand valve 22 of the user (instrument station) is opened, the guide shower 23 on the pipeline of the user is opened for draining water, and a large amount of moisture brought by the purge gas is reduced to enter the instrument, so that the judgment is influenced.
The tower A8 and the tower B14 are alternately operated, one adsorption and one regeneration are carried out, the cyclic utilization is carried out, and the continuous operation of the adsorption type compressed gas continuous drying device is ensured by switching once every 2 hours.
The instrument back blowing gas or conveying gas adopts carbon dioxide gas, the pressure is 2.8-3.4Mpa, the temperature is 80-120 ℃, because the carbon dioxide gas carries water seriously, the carbon dioxide gas still carries water after being compressed by a carbon dioxide compressor, a drying device is adopted for processing, and the backward movement of the water is reduced.
The regeneration device comprises a tower B14, the bottom of the tower B14 is connected with a pressure relief hole 16 through an exhaust valve 15 for pressure relief, after the pressure relief is finished, an exhaust valve 24 of a tower A8 is ensured to be closed, a main pressure relief pipeline pressure relief valve 17, a regenerated nitrogen valve 18 and an electric heater 19 are opened for heating and regenerating the tower B14, the regenerated gas is discharged through a silencer 20, the electric heater 19 is closed after the heating is finished, the tower B15 is cooled, the regenerated nitrogen valve 18 is closed after the heating is finished, a pressure equalizing valve 21 is opened for replacement of the tower B14, and the main pressure relief pipeline pressure relief valve 17 is closed after the heating is finished;
the adsorption of the tower A8 and the regeneration of the tower B14 are alternately and continuously operated, so that the continuous and stable operation of the adsorption type compressed gas continuous drying device is ensured.
Claims (5)
1. An adsorption type compressed gas continuous drying device is characterized by comprising an adsorption device and a regeneration device;
the adsorption device comprises a carbon dioxide compressor (1), the output end of the carbon dioxide compressor (1) is connected with a water cooler (2), the output end of the water cooler (2) is connected with a separator (3), the output end of the separator (3) is divided into two paths, one path of the output end is connected with a drainage ditch through a first blow-down valve (4), the other path of the output end enters a No. 1 filter (6) for separation through a separator outlet valve (5), the output end of the No. 1 filter (6) is divided into three paths, the liquid output end of the No. 1 filter (6) enters the drainage ditch through a second blow-down valve (7), the gas output end of the No. 1 filter (6) enters a tower body through an A tower inlet valve (9) at the bottom of an A tower (8), and the top of the A tower (8) is connected with a No. 2 filter (11) through a check valve (10);
the gas output end of the other path of the 1# filter (6) is connected with a tower B (14) through a tower B inlet valve (25), and the output end of the top of the tower B (14) is connected with a 2# filter (11) through a tower B check valve (27);
the regeneration device comprises a tower B (14), the bottom of the tower B (14) is connected with a pressure relief hole (16) through an exhaust valve (15) for pressure relief, a pressure relief valve (17) is arranged on the pressure relief hole (16) in parallel, and the output ends of the pressure relief hole (16) and the pressure relief valve (17) are connected with a silencer (20);
the output ends of the top of the tower A (8) and the top of the tower B (14) are connected with the output end of an electric heater (19), and the input end of the electric heater (19) receives nitrogen through a nitrogen valve (18);
the liquid output end of the No. 2 filter (11) is connected with a drainage ditch through a drain valve III (12), and the gas output end of the No. 2 filter (11) enters a user through a user hand valve (13).
2. The apparatus for continuous drying of an adsorbed compressed gas according to claim 1, wherein the three-stage outlet of the carbon dioxide compressor (1) is partially filled with water-laden high-temperature CO2The gas is connected with the water cooler (2) through the hand valve (26) for cooling.
3. An apparatus for the continuous drying of an adsorption compressed gas according to claim 1, characterized in that the separator (3) is connected in one path to the outlet of the inlet user hand valve (13) via a bypass valve (22).
4. The continuous drying device for adsorption compressed gas according to claim 1, wherein a pressure equalizing valve (21) is arranged between the output ends of the tower B (14) and the tower A (8).
5. The continuous drying device for the adsorption type compressed gas according to claim 1, wherein the gas output end of the No. 1 filter (6) is connected with the pressure relief hole (16) and the pressure relief valve (17) through an A tower exhaust valve (24) after passing through an A tower inlet valve (9), and the gas output end of the No. 1 filter (6) is connected with the pressure relief hole (16) and the pressure relief valve (17) through a B tower exhaust valve (15) after passing through a B tower inlet valve (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022647862.7U CN214075855U (en) | 2020-11-16 | 2020-11-16 | Adsorption type compressed gas continuous drying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022647862.7U CN214075855U (en) | 2020-11-16 | 2020-11-16 | Adsorption type compressed gas continuous drying device |
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| CN214075855U true CN214075855U (en) | 2021-08-31 |
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| CN202022647862.7U Active CN214075855U (en) | 2020-11-16 | 2020-11-16 | Adsorption type compressed gas continuous drying device |
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