CN216537693U - System for directly capturing carbon dioxide by continuous air - Google Patents
System for directly capturing carbon dioxide by continuous air Download PDFInfo
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- CN216537693U CN216537693U CN202220265187.8U CN202220265187U CN216537693U CN 216537693 U CN216537693 U CN 216537693U CN 202220265187 U CN202220265187 U CN 202220265187U CN 216537693 U CN216537693 U CN 216537693U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
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Abstract
The utility model discloses a system for directly capturing carbon dioxide by continuous air, which comprises an adsorbent bin, an adsorption device, a desorption device, an adsorbent regeneration device and an adsorbent return device, wherein the adsorbent bin is used for storing the adsorbent; the exit linkage of adsorbent feed bin to adsorption equipment's import, adsorption equipment's exit linkage to desorption equipment's import, desorption equipment's exit linkage to adsorbent regenerating unit's import, adsorbent regenerating unit's exit linkage to adsorbent returning charge device's import, adsorbent returning charge device's exit linkage to the import of adsorbent feed bin. The method comprises an adsorption process of directly capturing carbon dioxide by air, a desorption process of directly capturing carbon dioxide by air, a regeneration process of directly capturing carbon dioxide by air and a process of directly capturing carbon dioxide return by air. The utility model can realize continuous operation of the whole process of directly capturing carbon dioxide by air by developing the processes of adsorption, desorption, regeneration and the like step by step, thereby greatly improving the utilization efficiency of the system.
Description
Technical Field
The utility model belongs to the technical field of direct carbon dioxide capture by air, and particularly relates to a system for directly capturing carbon dioxide by continuous air.
Background
In 1999, Lackner, the American Alamoss National Laboratory (Los Alamos National Laboratory), proposed the concept of direct air carbon capture (DAC) for climate change mitigation. Many methods and materials have been proposed for DACs by researchers over the years. At present, DAC technology has been considered a viable CO2One of the emission reduction technologies. CO in air2Trapping with adsorbent, regenerating adsorbent by changing pressure or temperature, and recycling the regenerated adsorbent for CO2Capture, pure CO2It is stored.
Human activities have led to global CO for more than half a century2The discharge amount increases year by year. CO in the atmosphere2The concentration is sharply increased from about 310ppm in 1960 to 410ppm in 2019, and the global CO is increased every year2The discharge amount exceeds 350 hundred million tons. Direct air carbon capture as a research hotspot of negative carbon emission technologyThe technology is selected from one of ten global breakthrough technologies of 'Ma province science and technology review' in 2019. With the development of carbon neutralization targets, carbon reduction in the whole industry chain has become a consensus, and further development of direct air carbon capture technology is urgently needed.
The differences between the DAC technology and the CCS (carbon capture and storage carbon capture and sequestration) technology are shown in Table 1.
TABLE 1 differences between DAC and CCS techniques
Unlike the CCS technology, the DAC technology is characterized in that:
(1) can be used for capturing and dispersing emission source CO2；
(2) The installation site is relatively flexible to select, and the site which is rich in renewable energy and is close to the carbon storage and utilization position can be selected to reduce the trapping energy consumption and the transportation cost;
(3) without considering NOx and SO2Etc. of gaseous impurities. The main difficulty of the direct air carbon capture technology is CO in air2Low partial pressure (40Pa), low concentration (400ppm), and CO2Low adsorption/regeneration efficiency, high regeneration energy consumption and high cost.
Currently, the DAC technology using physical adsorption method, the contactor is usually rectangular tower equipment, and amine adsorbent embedded in the contactor is attached to porous, honeycomb ceramic block for adsorbing CO2. After adsorption, low-temperature steam (85-100 ℃) is used for treating CO2And (5) carrying out desorption and collection. Global thermosetat stated that the aminopolymer adsorbent used in it shortened the cycle time of the entire system to below 30 minutes, which essentially represents an industry leading level. One of the difficulties with this class of DAC technology is the non-continuity of the adsorption/regeneration process, which affects the overall efficiency improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a system for continuously and directly capturing carbon dioxide by air, which can realize continuous operation of the whole process of directly capturing carbon dioxide by air by developing the processes of adsorption, desorption, regeneration and the like step by step and greatly improve the utilization efficiency of the system.
The utility model is realized by adopting the following technical scheme:
a continuous air direct carbon dioxide capturing system comprises an adsorbent bin, an adsorption device, a desorption device, an adsorbent regeneration device and an adsorbent return device;
the exit linkage of adsorbent feed bin to adsorption equipment's import, adsorption equipment's exit linkage to desorption equipment's import, desorption equipment's exit linkage to adsorbent regenerating unit's import, adsorbent regenerating unit's exit linkage to adsorbent returning charge device's import, adsorbent returning charge device's exit linkage to the import of adsorbent feed bin.
A further improvement of the utility model is that the adsorbent hopper is adapted to store particulate carbon dioxide adsorbent material.
A further improvement of the utility model is that the sorbent silos are used to store bulk carbon dioxide sorbent material.
The utility model is further improved in that the adsorption device comprises an adsorber for fully contacting air with an adsorbent material, the bottom of the adsorber is provided with an air inlet, the top of the adsorber is provided with an air outlet, the air outlet is provided with an induced draft fan, and a discharge port at the bottom of the adsorber is provided with a first discharge valve and first adsorbent conveyor equipment.
The utility model is further improved in that two sets of adsorption devices are provided.
The utility model is further improved in that the desorption device comprises a desorption device which enables the adsorbent material to release carbon dioxide through heating, a heater is arranged on the circumference of the desorption device, a feed inlet is arranged on the top of the desorption device, and CO is arranged on the top of the desorption device2And the outlet, the feed inlet is connected with the outlet of the first adsorbent conveyor equipment, and the discharge outlet at the bottom of the desorption device is provided with a second discharge valve and second adsorbent conveyor equipment.
The utility model is further improved in that the adsorbent regenerating device comprises a regenerator for cooling the desorbed adsorbent, and a feed inlet of the regenerator is connected with an outlet of the second adsorbent conveyor device.
The utility model is further improved in that the adsorbent returning device comprises a third adsorbent conveyor device connected with the discharge port of the regenerator, the outlet of the third adsorbent conveyor device is connected with the inlet of the returning device, and the outlet of the returning device is connected with the inlet of the adsorbent storage bin.
The utility model has at least the following beneficial technical effects:
the utility model provides a system for directly capturing carbon dioxide by continuous air aiming at granular or block-shaped adsorbent materials, which is characterized in that an adsorbent is sent into an adsorption device from a storage bin, fully contacts with air in the process of flowing from top to bottom in the adsorption device to adsorb and capture the carbon dioxide in the air, is gradually adsorbed to saturation at the tail end of the adsorption device, then is sent into a desorption device through a discharge valve and a conveyor, is heated by steam in the desorption device to release the adsorbed carbon dioxide, gradually completes the desorption process at the tail end of the desorption device, then is sent into a regeneration device through a discharge valve and the conveyor, is directly cooled by the air in the regeneration device to gradually complete the regeneration process, and then is sent back to the adsorbent storage bin through the conveyor and a return device to complete the cycle process, and can continuously run, the continuity of the whole process of directly capturing the carbon dioxide by the air is completely realized, and the efficiency of the capturing process is greatly improved, so that the capturing energy consumption and the capturing cost are reduced.
Drawings
FIG. 1 is a schematic diagram of a system for direct capture of carbon dioxide by continuous air according to the present invention.
Description of reference numerals:
1-adsorbent stock bin, 2-induced draft fan, 3-adsorber, 4-first discharge valve, 5-first adsorbent conveyor equipment, 6-desorption device, 7-second discharge valve, 8-second adsorbent conveyor equipment, 9-regenerator, 10-third adsorbent conveyor equipment and 11-returning charge ware.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The utility model provides a system for directly capturing carbon dioxide by continuous air, which comprises an adsorbent bin 1, an adsorption device, a desorption device, an adsorbent regeneration device and an adsorbent return device, wherein the adsorbent bin is provided with a plurality of adsorption holes; the exit linkage of adsorbent feed bin 1 is to the import of adsorption equipment, and adsorption equipment's exit linkage is to desorption equipment's import, and desorption equipment's exit linkage is to adsorbent regenerating unit's import, and adsorbent regenerating unit's exit linkage is to the import of adsorbent returning charge device, and the exit linkage of adsorbent returning charge device is to the import of adsorbent feed bin 1.
The adsorbent bin 1 is used for storing granular or blocky carbon dioxide adsorbent materials, such as solid amine adsorbents and physical adsorbents.
Specifically, adsorption equipment is including the adsorber 3 that is used for air and adsorbent material fully to contact, and air intlet has been seted up to the bottom of adsorber 3, and air outlet has been seted up at the top, and air outlet department is provided with draught fan 2, and the bottom discharge gate department of adsorber 3 is provided with first discharge valve 4 and first adsorbent conveyer equipment 5. And two sets of adsorption devices are arranged.
The desorption device comprises a desorber 6 which enables the adsorbent material to release carbon dioxide through heating, a heater is arranged on the circumference of the desorber 6, a feed inlet and CO are arranged on the top of the desorber 62And the outlet, the feed inlet is connected with the outlet of the first adsorbent conveyor device 5, and the discharge outlet at the bottom of the desorber 6 is provided with a second discharge valve 7 and a second adsorbent conveyor device 8.
The adsorbent regenerating device comprises a regenerator 9 for cooling the desorbed adsorbent, and a feed inlet of the regenerator 9 is connected with an outlet of the second adsorbent conveyor device 8.
The adsorbent returning device comprises a third adsorbent conveyor device connected with a discharge port of the regenerator 9, an outlet of the third adsorbent conveyor device 10 is connected with an inlet of a returning device 11, and an outlet of the returning device 11 is connected with an inlet of the adsorbent bin 1.
The utility model provides a method for directly capturing carbon dioxide by continuous air, which comprises the following steps:
the method comprises the following steps that in the adsorption process of directly capturing carbon dioxide by air, an induced draft fan 2 is started, the air is pumped into an adsorption device through a pipeline, the air is in reverse direct contact with granular or blocky carbon dioxide adsorbent materials from top to bottom in the adsorption device, the carbon dioxide in the air is captured and adsorbed by the adsorbent materials, the adsorbed air flows out of the adsorption device, and the adsorbent materials which are gradually adsorbed and saturated fall into a first adsorbent conveyor device 5 through a first discharge valve 4 and are sent into a desorption process;
in the desorption process of directly capturing carbon dioxide by air, the adsorbent material with saturated adsorption falls into a desorption device and indirectly contacts with a steam heater in a desorber 6, the steam releases heat and then becomes condensed water to be discharged out of a system, the temperature of the adsorbent material rises to 50-85 ℃, the temperature of the adsorbent material rises along with the desorption and release of carbon dioxide, the released carbon dioxide is captured, and the adsorbent material with the temperature raised by desorption falls into a second adsorbent conveyor device 8 through a second discharge valve 7 and is sent into a regeneration process;
the air directly catches the carbon dioxide regeneration process, the adsorbent material that heats up after desorbing falls into the regenerating unit, direct contact with the air after the adsorption that the adsorption plant discharges in the regenerator 9 is converse, through the air cooling adsorbent material, finish the regeneration process of lowering the temperature, the air after heating is directly emptied, and the adsorbent material after cooling enters the material returning process;
the process of directly capturing carbon dioxide returning charge by air, and the cooled adsorbent material is sent into the adsorbent bin 1 again through the third adsorbent conveyor device 10 and the returning charge device 11, so that the whole process is completed.
Although the utility model has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.
Claims (8)
1. A continuous air direct carbon dioxide capturing system is characterized by comprising an adsorbent bin, an adsorption device, a desorption device, an adsorbent regeneration device and an adsorbent return device;
the exit linkage of adsorbent feed bin to adsorption equipment's import, adsorption equipment's exit linkage to desorption equipment's import, desorption equipment's exit linkage to adsorbent regenerating unit's import, adsorbent regenerating unit's exit linkage to adsorbent returning charge device's import, adsorbent returning charge device's exit linkage to the import of adsorbent feed bin.
2. The continuous air direct capture carbon dioxide system of claim 1, wherein the sorbent storage bin is configured to store a granular carbon dioxide sorbent material.
3. The continuous air direct capture carbon dioxide system of claim 1, wherein the sorbent storage bin is configured to store bulk carbon dioxide sorbent material.
4. The system for continuously and directly capturing carbon dioxide by air as claimed in claim 1, wherein the adsorption device comprises an adsorber for fully contacting air with the adsorbent material, an air inlet is formed at the bottom of the adsorber, an air outlet is formed at the top of the adsorber, an induced draft fan is arranged at the air outlet, and a first discharge valve and a first adsorbent conveyor device are arranged at the bottom discharge port of the adsorber.
5. The continuous air direct capture carbon dioxide system of claim 4, wherein two sets of adsorption units are provided.
6. The continuous air direct capture carbon dioxide system of claim 4, wherein the desorption device comprises a desorption device for releasing carbon dioxide from the adsorbent material by heating, the desorption device is circumferentially provided with a heater, the top of the desorption device is provided with a feed inlet and CO2And the outlet, the feed inlet is connected with the outlet of the first adsorbent conveyor equipment, and the discharge outlet at the bottom of the desorption device is provided with a second discharge valve and second adsorbent conveyor equipment.
7. The continuous air direct capture carbon dioxide system of claim 6, wherein the sorbent regeneration means comprises a regenerator for temperature reduction of the sorbent after desorption, and the feed inlet of the regenerator is connected to the outlet of the second sorbent conveyor means.
8. The system for continuous air direct capture of carbon dioxide of claim 7, wherein the sorbent return means comprises a third sorbent conveyor means connected to the discharge port of the regenerator, the outlet of the third sorbent conveyor means being connected to the inlet of a return feeder, the outlet of the return feeder being connected to the inlet of the sorbent storage bin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220265187.8U CN216537693U (en) | 2022-02-09 | 2022-02-09 | System for directly capturing carbon dioxide by continuous air |
| JP2022004016U JP3240788U (en) | 2022-02-09 | 2022-12-06 | Direct collection system for carbon dioxide in continuous air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220265187.8U CN216537693U (en) | 2022-02-09 | 2022-02-09 | System for directly capturing carbon dioxide by continuous air |
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| CN216537693U true CN216537693U (en) | 2022-05-17 |
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| CN202220265187.8U Active CN216537693U (en) | 2022-02-09 | 2022-02-09 | System for directly capturing carbon dioxide by continuous air |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307535A (en) * | 2022-02-09 | 2022-04-12 | 西安热工研究院有限公司 | System and method for directly capturing carbon dioxide by continuous air |
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- 2022-02-09 CN CN202220265187.8U patent/CN216537693U/en active Active
- 2022-12-06 JP JP2022004016U patent/JP3240788U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307535A (en) * | 2022-02-09 | 2022-04-12 | 西安热工研究院有限公司 | System and method for directly capturing carbon dioxide by continuous air |
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| JP3240788U (en) | 2023-02-03 |
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