CN210860658U - Supercritical carbon dioxide supercharging equipment - Google Patents
Supercritical carbon dioxide supercharging equipment Download PDFInfo
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- CN210860658U CN210860658U CN201920886285.1U CN201920886285U CN210860658U CN 210860658 U CN210860658 U CN 210860658U CN 201920886285 U CN201920886285 U CN 201920886285U CN 210860658 U CN210860658 U CN 210860658U
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Abstract
The utility model discloses a supercritical carbon dioxide supercharging equipment, this equipment include one-level entry buffer unit, one-level entry buffer unit and transcritical looks attitude pressure boost unit connection, transcritical looks attitude pressure boost unit and hot-blast inner circulation cooling unit connection, hot-blast inner circulation cooling unit and last-stage entry buffer unit connection, last-stage entry buffer unit and supercritical looks attitude pressure boost unit connection, supercritical looks attitude pressure boost unit and export cooling unit connection. The utility model discloses a supercritical carbon dioxide supercharging equipment only uses the compressor to carry out multistage pressure boost for final pressure reaches supercritical state, no longer uses cryrogenic liquefaction technology and special pump pressure boost technology, can reduce equipment input cost, reduces and uses the energy consumption.
Description
Technical Field
The utility model relates to a supercritical carbon dioxide pressure boost technical field particularly, relates to a supercritical carbon dioxide supercharging equipment.
Background
At present, the supercritical state transportation and injection process of carbon dioxide is to use a compressor to pre-pressurize, so that the high-purity carbon dioxide obtained by capture and separation is pressurized to a certain pressure (because the carbon dioxide is active in a phase state near the critical point pressure) below the critical point pressure, and then the final pressure is pressurized to reach the supercritical state by using a special pump after cryogenic liquefaction. The disadvantages of this technique are: when the temperature of the field environment is high, the equipment investment cost is high, and the energy consumption is high.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides a supercritical carbon dioxide supercharging equipment can overcome prior art's the aforesaid not enough.
In order to achieve the technical purpose, the technical scheme of the utility model is realized as follows:
a supercritical carbon dioxide supercharging device comprises a primary inlet buffer unit, wherein the primary inlet buffer unit is connected with a transcritical phase state supercharging unit, the transcritical phase state supercharging unit is connected with a hot air internal circulation cooling unit, the hot air internal circulation cooling unit is connected with a final-stage inlet buffer unit, the final-stage inlet buffer unit is connected with a supercritical phase state supercharging unit, and the supercritical phase state supercharging unit is connected with an outlet cooling unit;
the transcritical phase state pressurizing unit and the supercritical phase state pressurizing unit are both reciprocating piston compressors; the first-stage inlet buffer unit and the last-stage inlet buffer unit are both vertical buffer liquid separation tanks, partition plates and damping pipes are arranged in the vertical buffer liquid separation tanks, and the damping pipes penetrate through the partition plates; the outlet cooling unit is a blast air-cooling heat exchanger;
the hot air internal circulation cooling unit comprises an air-cooled heat exchanger, a hot air internal circulation channel is arranged on the side surface of the air-cooled heat exchanger, a fan is arranged below a heat exchange tube bundle of the air-cooled heat exchanger, the fan is connected with a variable frequency motor, and the variable frequency motor is connected with a variable frequency controller; the utility model discloses a heat exchanger, including air-cooled heat exchanger, heat exchanger's heat exchanger tube bundle, side air intake, side inner loop air port, cold side medium export, side air intake, side inner loop air port and top air port, the both ends of air-cooled heat exchanger's heat exchanger tube bundle are equipped with hot side medium entry, cold side medium export respectively, the heat exchanger tube bundle below of air-cooled heat exchanger is equipped with the side air intake, the side air intake is equipped with the manual control shutter, side inner loop air port and top air port are equipped with the automatic control shutter, cold side medium export is equipped with temperature transmitter, temperature.
Furthermore, a pull rod of a louver of the side internal circulation air port and a pull rod of a louver of the top air outlet are hinged with a pneumatic actuator, and signals of the temperature controller are connected with the pneumatic actuator.
Furthermore, the partition board is horizontally arranged to divide the vertical buffer liquid separation tank into two cavities with equal volumes.
Furthermore, the inner diameter of the damping tube is smaller than the inner diameter of an inlet and an outlet of the tank body of the vertical buffer liquid-separating tank.
Further, a transcritical pressurization backflow pipeline is connected to an inlet branch pipe of the primary inlet buffer unit from an outlet branch pipe of the hot air internal circulation cooling unit; and the supercritical pressurizing return pipeline is connected from the outlet branch pipe of the supercritical phase state pressurizing unit to the inlet branch pipe of the hot air internal circulation cooling unit.
Further, the bottom of the last stage inlet buffer unit is connected to the bottom of the first stage inlet buffer unit through a blowdown line.
Further, the emptying pipeline is connected with an outlet branch pipe of the supercritical phase state pressurizing unit.
The utility model has the advantages that: the hot air internal circulation cooling unit, the final-stage inlet buffer unit and the supercritical phase state pressurizing unit are used for replacing the existing deep cooling liquefaction process and special pump pressurizing process, so that the supercritical pressurizing function of the compressor is realized, namely, the compressor is only used for carrying out multistage pressurization, the final pressure reaches the supercritical state, the equipment investment cost can be reduced, and the use energy consumption is reduced. The temperature control of the cooling medium is realized through automatic control of the shutter and variable-speed control of the variable-frequency motor; the opening and closing of the shutter are controlled by using the temperature controller, so that the accurate control of the outlet temperature of the cold side is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a supercritical carbon dioxide supercharging apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a hot air internal circulation cooling unit according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a vertical buffer liquid separation tank according to an embodiment of the invention;
in the figure: 1. the system comprises a primary inlet buffer unit, a transcritical phase state pressurizing unit, a 3 hot air internal circulation cooling unit, a 4 final inlet buffer unit, a 5 supercritical phase state pressurizing unit, a 6 outlet cooling unit, a 7 partition plate, an 8 damping pipe, a 9 air cooling type heat exchanger, a 10 hot air internal circulation channel, 11 a fan, 12 a variable frequency motor, 13 a variable frequency controller, 14 a hot side medium inlet, 15 a cold side medium outlet, 16 a side air inlet, 17 a side internal circulation air outlet, 18 a top air outlet, 19 a temperature transmitter, 20 a temperature controller, 21 a pneumatic actuator, 22, a transcritical pressurizing return pipeline, 23 a supercritical pressurizing return pipeline, 24 a sewage discharge pipeline, 25 and an emptying pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art all belong to the protection scope of the present invention.
As shown in fig. 1-3, according to the embodiment of the utility model discloses a supercritical carbon dioxide supercharging device, including one-level entry buffer unit 1, one-level entry buffer unit 1 is connected with transcritical phase state supercharging unit 2, transcritical phase state supercharging unit 2 is connected with hot-blast inner circulation cooling unit 3, hot-blast inner circulation cooling unit 3 is connected with last level entry buffer unit 4, last level entry buffer unit 4 is connected with supercritical phase state supercharging unit 5, supercritical phase state supercharging unit 5 is connected with export cooling unit 6.
The transcritical phase state pressurizing unit 2 and the supercritical phase state pressurizing unit 5 are both reciprocating piston compressors suitable for carbon dioxide media; one-level entry buffer unit 1, final stage entry buffer unit 4 are vertical buffering liquid separation jar, be equipped with the trip valve on the entry pipeline of one-level entry buffer unit 1, be equipped with baffle 7 and damping tube 8 in the vertical buffering liquid separation jar, damping tube 8 passes baffle 7 forms a low pass filter for weaken the air current pulse through the jar body. The baffle 7 is horizontally arranged to divide the vertical buffer liquid separating tank into two cavities with equal volumes, the inlet of the vertical buffer liquid separating tank body is arranged on the side wall of the lower cavity, the outlet of the vertical buffer liquid separating tank body is arranged on the side wall of the upper cavity, and after gas-liquid separation and buffering are carried out on the gas flow entering the lower cavity, the gas part enters the upper cavity through the damping pipe 8 to be further buffered. The inner diameter of the damping tube 8 is smaller than the inner diameters of the inlet and the outlet of the tank body of the vertical buffer liquid separation tank, so that a damping effect is formed on the air flow, and the pressure loss of the air flow passing through the damping tube 8 is not more than 0.5%; the length of the damping tube 8 is required to avoid the length of a resonant pipeline caused by 0.8-1.2 times of air flow pulse. The outlet cooling unit 6 is a blast air cooling heat exchanger, and a cut-off valve is arranged on an outlet pipeline of the outlet cooling unit 6.
The hot air internal circulation cooling unit 3 comprises an air-cooled heat exchanger 9, a hot air internal circulation channel 10 is arranged on the side surface of the air-cooled heat exchanger 9, a fan 11 is arranged below a heat exchange tube bundle of the air-cooled heat exchanger 9, the fan 11 is connected with a variable frequency motor 12, and the variable frequency motor 12 is connected with a variable frequency controller 13; the upper and lower parts of the heat exchange tube bundle of the air-cooled heat exchanger 9 are of a closed structure, two ends of the heat exchange tube bundle of the air-cooled heat exchanger 9 are respectively provided with a hot side medium inlet 14 and a cold side medium outlet 15, a side air inlet 16 is arranged below the heat exchange tube bundle of the air-cooled heat exchanger 9, side internal circulation air ports 17 are arranged above and below the heat exchange tube bundle of the air-cooled heat exchanger 9, a top air outlet 18 is arranged above the heat exchange tube bundle of the air-cooled heat exchanger 9, a manual shutter is arranged at the side air inlet 16, the side internal circulation air ports 17 and the top air outlet 18 are provided with automatic control shutters, the cold side medium outlet 15 is provided with a temperature transmitter 19, and the temperature transmitter 19 is in signal.
The temperature controller 20 is in signal connection with the pneumatic actuator 21, and the pull rod of the louver of the side inner circulating air inlet 17 and the pull rod of the louver of the top air outlet 18 are hinged to the pneumatic actuator 21, so that when the temperature controller 20 fails, the louver of the top air outlet is closed, and the louver of the hot air inner circulating channel is opened.
The transcritical pressurizing and refluxing pipeline 22 is connected to an inlet branch pipe of the primary inlet buffer unit 1 from an outlet branch pipe of the hot air internal circulation cooling unit 3; the supercritical pressure boost return line 23 is connected from the outlet branch of the supercritical phase state pressure boost unit 5 to the inlet branch of the internal hot blast circulation cooling unit 3. The bottom of the final stage inlet buffer unit 4 is connected to the bottom of the primary inlet buffer unit 1 by a blowdown line 24. The emptying pipeline 25 is connected with an outlet branch pipe of the supercritical phase state pressurizing unit 5.
When the device is used specifically, a high-purity carbon dioxide medium enters a transcritical phase state pressurizing unit 2 through a first-stage inlet buffer unit 1, and the carbon dioxide medium is pressurized in one stage or two stages and compressed into a supercritical phase state from a low-pressure gas state; the compressed high-temperature carbon dioxide medium enters a hot air internal circulation cooling unit 3 for cooling, the hot air internal circulation cooling unit uses an air-cooled heat exchanger and a temperature controller to control the temperature of the cooled carbon dioxide medium to be 45-65 ℃, and the medium is prevented from being liquefied due to supercooling when the ambient temperature is low; the cooled supercritical phase carbon dioxide enters a supercritical phase pressurizing unit 5 through a final-stage inlet buffer unit 4, and the pressurized carbon dioxide medium is cooled to a required temperature through an outlet cooling unit 6 and then discharged.
And the hot air internal circulation cooling unit 3 is used for controlling the temperature of the cooled carbon dioxide medium to be 45-65 ℃ when the ambient temperature is-40-50 ℃ (a temperature transmitter arranged at a cold side medium outlet can execute high-low temperature interlocking control), and preventing the medium from being liquefied due to supercooling when the ambient temperature is lower, so that the supercritical supercharging function of the compressor is realized.
When the flow of the equipment is adjusted, part of the carbon dioxide transcritically pressurized medium flows back to the upstream of the primary inlet buffer unit from the downstream branch pipe of the hot air internal circulation cooling unit through the transcritical pressurization return pipeline 22 and the flow adjusting valve arranged on the transcritical pressurization return pipeline 22, and part of the carbon dioxide transcritically pressurized medium flows back to the upstream of the hot air internal circulation cooling unit 3 from the upstream branch pipe of the outlet cooling unit 6 through the supercritical pressurization return pipeline 23 and the flow adjusting valve arranged on the supercritical pressurization return pipeline 23.
When the equipment emptying instruction is executed, the supercritical phase carbon dioxide is emptied from the outlet cooling unit upstream branch pipe through the emptying pipeline 25 and the emptying valve arranged on the emptying pipeline 25.
When the final-stage inlet buffer unit 4 executes a sewage discharge instruction, a sewage discharge valve at the bottom of the corresponding vertical buffer liquid separation tank is opened, and sewage is discharged to the first-stage inlet buffer unit 1; the primary inlet buffer unit 1 discharges the sewage directly through the sewage pipeline 24 and a sewage valve installed on the sewage pipeline 24.
To sum up, with the help of the utility model discloses an above-mentioned technical scheme replaces current cryrogenic liquefaction technology and special pump pressure boost technology through using hot air inner loop cooling unit, last stage entry buffer unit and supercritical phase state pressure boost unit, realizes the function of compressor supercritical pressure boost, only uses the compressor to carry out multistage pressure boost promptly for final pressure reaches supercritical state, can reduce equipment input cost, reduces and uses the energy consumption. The temperature control of the cooling medium is realized through automatic control of the shutter and variable-speed control of the variable-frequency motor; the opening and closing of the shutter are controlled by using the temperature controller, so that the accurate control of the outlet temperature of the cold side is realized.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The supercritical carbon dioxide supercharging device is characterized by comprising a primary inlet buffer unit (1), wherein the primary inlet buffer unit (1) is connected with a transcritical phase state supercharging unit (2), the transcritical phase state supercharging unit (2) is connected with a hot air internal circulation cooling unit (3), the hot air internal circulation cooling unit (3) is connected with a final inlet buffer unit (4), the final inlet buffer unit (4) is connected with a supercritical phase state supercharging unit (5), and the supercritical phase state supercharging unit (5) is connected with an outlet cooling unit (6);
the transcritical phase state pressurizing unit (2) and the supercritical phase state pressurizing unit (5) are both reciprocating piston compressors; the first-stage inlet buffer unit (1) and the last-stage inlet buffer unit (4) are both vertical buffer liquid separating tanks, partition plates (7) and damping pipes (8) are arranged in the vertical buffer liquid separating tanks, and the damping pipes (8) penetrate through the partition plates (7); the outlet cooling unit (6) is a blast air-cooled heat exchanger;
the hot air internal circulation cooling unit (3) comprises an air-cooled heat exchanger (9), a hot air internal circulation channel (10) is arranged on the side surface of the air-cooled heat exchanger (9), a fan (11) is arranged below a heat exchange tube bundle of the air-cooled heat exchanger (9), the fan (11) is connected with a variable frequency motor (12), and the variable frequency motor (12) is connected with a variable frequency controller (13); the utility model discloses a heat exchanger, including air-cooled heat exchanger (9), heat exchanger tube bundle, side air intake (16), side air intake (17) and top air outlet (18), side air intake (17) are equipped with manual control shutter, side inner loop air intake (17) and top air outlet (18) are equipped with automatic control shutter, cold side medium export (15) are equipped with temperature transmitter (19), temperature transmitter (19) and temperature controller (20) signal connection.
2. The supercritical carbon dioxide supercharging apparatus according to claim 1, characterized in that the pull rod of the louver of the side inside circulation tuyere (17) and the pull rod of the louver of the top air outlet (18) are hinged to a pneumatic actuator (21), and the temperature controller (20) is in signal connection with the pneumatic actuator (21).
3. The supercritical carbon dioxide supercharging apparatus according to claim 1, characterized in that the partition (7) is disposed horizontally, dividing the vertical buffer liquid separation tank into two chambers of equal volume.
4. The supercritical carbon dioxide pressurizing apparatus according to claim 1, wherein the inner diameter of the damping tube (8) is smaller than the inner diameter of the inlet and outlet of the tank body of the vertical buffer liquid-separating tank.
5. The supercritical carbon dioxide pressurizing apparatus according to claim 1, characterized in that a transcritical pressurizing return line (22) is connected from an outlet branch of the hot blast internal circulation cooling unit (3) to an inlet branch of the primary inlet buffer unit (1); the supercritical pressurizing return pipeline (23) is connected to an inlet branch pipe of the hot air internal circulation cooling unit (3) from an outlet branch pipe of the supercritical phase state pressurizing unit (5).
6. Supercritical carbon dioxide pressurizing apparatus according to claim 1, characterized in that the bottom of the last stage inlet buffer unit (4) is connected to the bottom of the first stage inlet buffer unit (1) by a blowdown line (24).
7. Supercritical carbon dioxide pressurizing apparatus according to claim 1, characterized by a blow-down line (25) connecting the outlet branches of the supercritical phase pressurizing unit (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920886285.1U CN210860658U (en) | 2019-06-13 | 2019-06-13 | Supercritical carbon dioxide supercharging equipment |
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| CN201920886285.1U CN210860658U (en) | 2019-06-13 | 2019-06-13 | Supercritical carbon dioxide supercharging equipment |
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| CN210860658U true CN210860658U (en) | 2020-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319352A (en) * | 2019-06-13 | 2019-10-11 | 北京杰利阳能源设备制造有限公司 | A kind of supercritical carbon dioxide supercharging equipment and technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110319352A (en) * | 2019-06-13 | 2019-10-11 | 北京杰利阳能源设备制造有限公司 | A kind of supercritical carbon dioxide supercharging equipment and technique |
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