CN220003520U - Self-circulation device for capturing and storing carbon dioxide by offshore solar power generation - Google Patents
Self-circulation device for capturing and storing carbon dioxide by offshore solar power generation Download PDFInfo
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- CN220003520U CN220003520U CN202321403612.6U CN202321403612U CN220003520U CN 220003520 U CN220003520 U CN 220003520U CN 202321403612 U CN202321403612 U CN 202321403612U CN 220003520 U CN220003520 U CN 220003520U
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 155
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 77
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 77
- 238000010248 power generation Methods 0.000 title claims abstract description 21
- 238000010521 absorption reaction Methods 0.000 claims abstract description 33
- 238000000926 separation method Methods 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 32
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims description 7
- 238000005868 electrolysis reaction Methods 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000003487 electrochemical reaction Methods 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 27
- 239000000243 solution Substances 0.000 description 24
- -1 amine salt Chemical class 0.000 description 8
- 238000005406 washing Methods 0.000 description 8
- 150000001412 amines Chemical class 0.000 description 6
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- 239000013589 supplement Substances 0.000 description 4
- XMYQHJDBLRZMLW-UHFFFAOYSA-N methanolamine Chemical compound NCO XMYQHJDBLRZMLW-UHFFFAOYSA-N 0.000 description 3
- 229940087646 methanolamine Drugs 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229940031098 ethanolamine Drugs 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N methyl monoether Natural products COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a self-circulation device for capturing and storing carbon dioxide by utilizing solar power generation at sea, which comprises a carbon dioxide capturing ball, a carbon dioxide storage ball and a self-feedback system. The carbon dioxide capturing ball comprises an electrolytic cell, an absorption cell, a primary cell, a power generation and supply system, a separation cell, a control system and the like, and the capturing and conversion of carbon dioxide are realized by utilizing solar power generation and driving electrochemical reaction. The carbon dioxide storage ball is responsible for storing captured carbon dioxide and is controlled by a self-feedback system to realize the disassembly and replacement of the storage ball. Compared with the traditional carbon dioxide capturing device, the device can utilize abundant solar energy resources at sea, and has the characteristics of environmental protection, low energy consumption, high recovery rate, simple and convenient operation, self-circulation and the like.
Description
Technical Field
The utility model relates to the technical field of carbon dioxide treatment, in particular to a solar-driven device capable of capturing and storing CO at sea 2 Is provided.
Background
At present, a core component of a commonly used carbon dioxide capture system is a carbon dioxide scrubber, which contains a granular solvent tightly filled with a large specific surface area, and absorbs or captures target gas by means of chemical reaction.
The working principle of the traditional carbon dioxide washing tower is as follows: carbon dioxide in the air enters the washing tower through the inlet, then contacts with the absorption liquid (generally amine solution), and then chemical reaction is carried out between the carbon dioxide and the absorption liquid, specifically, an amine molecule and a carbon dioxide molecule react to generate an amine salt ion and a hydrate, so that the carbon dioxide is absorbed and transferred into the absorption liquid. The scrubbing liquid circulates at the bottom of the column, bringing the sucked carbon dioxide to the top, which completes the removal of carbon dioxide.
In the whole chemical reaction process, amine in the absorption liquid can react with carbon dioxide to generate amine salt and carbonic acid. In this way, certain amines, such as methanol amine (MEA), ethanol amine (DEA), and dimethyl ether amine (DMEA), can selectively absorb and separate carbon dioxide without affecting the gases of other components in the air. When the concentration of amine salt in the absorption liquid reaches a threshold value, the saturated amine salt liquid needs to be distilled to obtain high-purity carbon dioxide gas to realize recycling of the detergent.
According to the working principle of the carbon dioxide washing tower, the existing carbon dioxide washing tower has the following defects:
1. the energy consumption is high: the carbon dioxide scrubber requires a large amount of energy to reheat the absorption liquid and to perform treatment operations such as distillation. For methanol amine, the distillation temperature ranges from about 100 ℃ to 150 ℃. For ethanolamine, the distillation temperature ranges from about 120 ℃ to 160 ℃. For dimethyl ether amine, the distillation temperature ranges from about 140 ℃ to 180 ℃. As a result, the carbon dioxide scrubber consumes a significant amount of electricity or fuel, which results in higher operating and maintenance costs.
2. Classification recovery problem of amine compounds: the solution used in the carbon dioxide scrubber is often an amine compound, and the waste liquid contains an amine component and must be recovered by classification. It is known that the problem of classified recovery of amines in waste solutions and their subsequent treatment requires the consumption of manpower and material resources, which would otherwise impose an environmental burden.
3. Working time length problem: because of the need of consuming a large amount of resources to recycle amine compounds, reheating absorption liquid, distilling and other treatment operations, frequent replenishment of washing liquid or other consumables is needed, self-circulation is not realized in the carbon dioxide washing tower, and the carbon dioxide washing tower cannot continuously work, which can lead to CO in the process of material changing and filling 2 Cannot be captured in time.
4. The recovery rate is low: in terms of carbon dioxide emission control, although a carbon dioxide scrubber can remove most of carbon dioxide, it is still difficult to completely remove carbon dioxide, and there is a phenomenon of loss of carbon dioxide in the scrubber, which affects recovery efficiency and increases environmental risks.
5. Has potential safety hazard: the carbon dioxide washing tower needs to use high-pressure gas, potential safety hazards exist during operation, and the operation difficulty is relatively high.
6. The application range is limited: the carbon dioxide absorption rate of the absorber generally increases with an increase in carbon dioxide concentration, and thus the carbon dioxide scrubber needs to use a high-purity, stable carbon dioxide source to ensure the scrubbing effect and recovery rate. And the normal atmosphere cannot meet this requirement.
Therefore, there is a need for a carbon dioxide capture system that is environmentally friendly, has high carbon dioxide recovery, low operational difficulties, is universally applicable, can achieve self-circulation, has low energy consumption, and directly utilizes solar energy resources at sea.
Disclosure of Invention
In view of the deficiencies in the prior art, the present utility model provides a method for capturing and storing CO 2 By utilizing solar energy at sea, CO is self-circulated in a low-cost and high-efficiency manner 2 Capturing.
The device comprises a carbon dioxide capturing ball, a carbon dioxide storage ball and a self-feedback system.
1. The carbon dioxide capturing ball mainly comprises an electrolytic cell, an absorption cell, a primary cell, a power generation and supply device, a separation cell and a heating module.
An electrolytic cell: receiving the electric energy supply of the control module and utilizing the dilute NaOH solution of the primary cell and Na from the absorption tank and the separation tank respectively 2 CO 3 The solution, a concentrated NaOH solution, H, was produced according to the following equation 2 With O 2 、NaHCO 3 A solution.
Anode: 4CO 3 2- +2H 2 O+4e - ＝O 2 +4HCO 3 -
And (3) cathode: 4H (4H) 2 O-4e - ＝2H 2 +4OH -
Wherein, the concentrated NaOH solution supplements the consumption of the absorption tank, H 2 With O 2 Make up for consumption of primary cell, naHCO 3 The solution supplements the consumption of the heating module.
And (3) an absorption cell: and receiving the NaOH concentrated solution from the electrolytic cell, and introducing external gas by an air inlet pump. According to the following equationCO absorption 2 And produce Na 2 CO 3 The solution is prepared into a liquid preparation,
2NaOH+CO 2 ＝Na 2 CO 3 +2H 2 O
and will produce Na 2 CO 3 The solution returns to supplement the consumption of the electrolytic cell, and simultaneously, the gas after reaction absorption is discharged from the gas outlet hole.
Primary cell: i.e. hydrogen and oxygen primary cells utilize H from electrolytic cells 2 With O 2 Water is produced according to the following equation,
and (3) a positive electrode: o (O) 2 +4H + +4e - ＝2H 2 O
And (3) a negative electrode: 2H (H) 2 -4e - ＝4H +
Thereby forming dilute NaOH solution to supplement the consumption of the electrolytic cell, and the generated electric energy is supplied to the control module for use.
The power generation and supply device comprises: and the solar panel is adopted for generating power, and the control module is used for supplying power to the whole device.
And a heating module: by inputting NaHCO to the electrolytic cell 3 Heating is performed to produce CO according to the following equation 2 And Na (Na) 2 CO 3 And outputting the gas-liquid mixture of the solution into a separation tank.
2NaHCO 3 ＝Na 2 CO 3 +H 2 O+CO 2
And (3) a separation tank: receiving CO brought by a heating module 2 And Na (Na) 2 CO 3 Gas-liquid mixture of the solution, and separating Na 2 CO 3 Make up for cell consumption while separating CO 2 Feeding CO 2 The ball is stored.
2. The carbon dioxide storage ball is communicated with the air outlet of the separation tank and is used for storing carbon dioxide gas exhausted by the separation tank.
3. The self-feedback system comprises a control module, a fast-assembling device, a Beidou positioning module and a remote communication module.
And the control module is used for: integrating overall control of systems, monitoring parameters including but not limited to CO 2 Is a solar panelPower, illumination intensity, CO 2 Store pressure, etc., and upload to the server by the remote communication module.
And (3) a fast-assembling device: realize detachable connection of carbon dioxide capture ball and carbon dioxide storage ball, realize CO 2 Disassembly and replacement of the storage balls ensure CO 2 The air pressure in the storage ball is not too high to assist CO 2 The trap ball operates stably for a long period of time.
The Beidou positioning module: is responsible for acquiring the current geographic location of the device.
And a remote communication module: and uploading the parameters to a server by adopting an Mqtt communication protocol.
In conclusion, the utility model has small influence on marine ecology, less energy input and CO 2 On the premise of high recovery rate, low operation difficulty, small volume and self-circulation, the utilization of offshore solar energy resources and the utilization of CO are realized 2 Is provided.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the structure of the device;
fig. 2 is a schematic diagram of the internal structure of the carbon dioxide capture ball of the device (arrows in the figure indicate gas-liquid flow directions).
Detailed Description
Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.
The self-circulation device for capturing and storing carbon dioxide by using offshore solar power generation as shown in fig. 1 and 2 comprises a carbon dioxide capturing ball 1, a carbon dioxide storage ball 2 and a self-feedback system.
The carbon dioxide capturing ball 1 comprises an electrolytic cell 3, an absorption cell 4, a primary cell 5, a power generation and supply device 6, a separation cell 7 and a heating module 8.
The electrolytic cell 3 is divided into an anode side and a cathode side by an ionic membrane, an anode side liquid inlet of the electrolytic cell is communicated with a liquid outlet of the absorption cell through a first control pump 9, the anode side liquid inlet of the electrolytic cell 3 is communicated with a liquid outlet of the separation cell 7, and Na of the absorption cell and the separation cell is used for separating the Na of the separation cell 2 CO 3 The solution thus enters the anode side of the cell.
The cathode side liquid inlet of the electrolytic cell 3 is communicated with the liquid outlet of the primary cell through a second control pump 10, and NaOH dilute solution generated on the positive electrode side of the primary cell enters the cathode side of the electrolytic cell 3.
The liquid outlet on the anode side of the electrolytic cell 3 is communicated with the input end of the heating module 8 through a fourth control pump 12, and NaHCO generated on the anode side of the electrolytic cell 3 Into the heating module 8.
The liquid outlet of the cathode side of the electrolytic cell 3 is communicated with the liquid inlet of the absorption cell through a third control pump 11, and the NaOH concentrated solution generated on the cathode side of the electrolytic cell enters the absorption cell 4.
The hydrogen outlet on the cathode side of the electrolytic cell 3 is communicated with the hydrogen inlet on the cathode side of the primary cell 5, the oxygen outlet on the anode side of the electrolytic cell 3 is communicated with the oxygen inlet on the anode side of the primary cell 5, and check valves are respectively arranged at the hydrogen inlet and the oxygen inlet of the primary cell.
The absorption tank 4 introduces external gas through an air inlet hole 14 of an air inlet pump 13, and is discharged outwards through an air outlet hole 15 after reaction absorption.
The output end of the heating module 8 is communicated with the separation tank 7, and CO generated by the heating module 8 2 And Na (Na) 2 CO 3 The gas-liquid mixture of the solution enters a separation tank 7, and CO separated by the separation tank 7 2 The gas is conveyed to the carbon dioxide storage ball 2 through the gas nipple 16 by a pipeline for storage, and a pressure sensor is arranged in the carbon dioxide storage ball 2.
The self-feedback system comprises a control module 17, a quick-mounting device 18, a Beidou positioning module and a remote communication module.
The power generation and supply device 6 utilizes solar panels to generate power to supply power to the control module 17, and the control module 17 is electrically connected with the anode 19 and the cathode 20 of the electrolytic cell 3 to provide electrolytic power supply.
The primary battery is divided into positive and negative electrodes by an ion membrane, the positive electrode 21 and the negative electrode 22 of the primary battery are connected with the control module 17, and the generated electric energy is supplied to the system for use.
The quick-assembly device 18 is detachably connected with the carbon dioxide capturing ball 1 and the carbon dioxide storage ball 2, and the locking push rod 23 controlled by the motor is driven by the control module to work, so that the carbon dioxide storage ball is detached and replaced.
The control module 17 monitors various parameters and monitors CO 2 Absorption rate of (2), power of solar panel, illumination intensity, and CO 2 The data such as the storage pressure is uploaded to the server by the remote communication module.
The working flow of the device is that on the premise that the power generation and supply device and the control module keep running in the whole course, the working mode and the supplementing mode alternately run and circulate until the CO in the carbon dioxide storage ball 2 2 Full of, device recovery is carried out, and the carbon dioxide storage ball 2 is replaced by a self-feedback system so as to realize the utilization of the device to offshore solar energy resources and the utilization of CO 2 Is provided.
The steps are as follows:
1. operation mode of first run
At this time, the air intake pump 13 and the fourth control pump 12 are simultaneously activated, and the electrolytic cell 3, the hydrogen-oxygen primary cell, the absorption cell 4, the separation cell 7, and the heating module 8 are simultaneously operated in this mode.
The NaOH solution in the absorption tank 4 is used for completely absorbing CO 2 Becomes Na 2 CO 3 The solution then enters a replenishment mode.
2. Supplementary mode
1. The electrolytic cell 3, the air inlet pump 13, the fourth control pump 12, and the heating module 8 are stopped first.
2. The first control pump 9 is started to drive CO 2 Na in the absorption cell 2 CO 3 Leading into an electrolytic cell 3 to realize anode Na of the electrolytic cell 3 2 CO 3 Is added to the (c).
3. Closing the first control pump 9, starting the third control pump 11, and introducing the concentrated NaOH solution into the absorption tank 4 to realize CO conversion 2 And supplementing the absorption tank 4.
4. The third control pump 11 is closed, the second control pump 10 is started, and the aqueous solution in the primary cell 5 is led into the electrolytic cell 3, so that the cathode of the electrolytic cell 3 is supplemented.
5. The second control pump 10 is turned off after the introduction is completed, and the operation mode is re-entered.
3. The two modes are circulated until the CO in the ball is collected 2 Full, carry out the device recovery after full, utilize the self-feedback system to change carbon dioxide and store ball 2.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.
Claims (7)
1. The utility model provides a solar energy power generation catches and stores self-loopa device of carbon dioxide which characterized in that: comprises a carbon dioxide capturing ball, a carbon dioxide storage ball and a self-feedback system,
the carbon dioxide capturing ball comprises an electrolytic cell, an absorption cell, a primary cell, a power generation and supply device, a separation cell and a heating module,
wherein the liquid inlet at the anode side of the electrolytic cell is communicated with the liquid outlets of the absorption cell and the separation cell, the liquid inlet at the cathode side of the electrolytic cell is communicated with the liquid outlet of the primary cell, the liquid outlet at the anode side of the electrolytic cell is communicated with the input end of the heating module, the liquid outlet at the cathode side of the electrolytic cell is communicated with the liquid inlet of the absorption cell, the hydrogen outlet and the oxygen outlet of the electrolytic cell are respectively and correspondingly communicated with the hydrogen inlet and the oxygen inlet of the primary cell, the absorption cell introduces external gas through an air inlet pump, and is discharged outwards after being absorbed by reaction, the separation cell is communicated with the output end of the heating module,
the carbon dioxide storage ball is communicated with the air outlet of the separation tank and is used for storing carbon dioxide gas discharged by the separation tank,
the self-feedback system comprises a control module and a fast-assembling device, wherein the power generation and supply device supplies power to the control module by utilizing solar power generation, the control module supplies electrolysis power to the electrolytic cell, the positive electrode and the negative electrode of the primary cell are connected with the control module, and the fast-assembling device is used for detachably connecting the carbon dioxide capturing ball with the carbon dioxide storage ball.
2. The self-circulating device for capturing and storing carbon dioxide for offshore solar power generation according to claim 1, wherein: the self-feedback system also comprises a Beidou positioning module and a remote communication module.
3. The self-circulating device for capturing and storing carbon dioxide for offshore solar power generation according to claim 2, wherein: the control module monitors parameters and uploads the parameters to the server through the remote communication module.
4. The self-circulating device for capturing and storing carbon dioxide for offshore solar power generation according to claim 1, wherein: corresponding control pumps are respectively arranged on the pipelines among the electrolytic cell, the primary cell and the absorption cell.
5. The self-circulating device for capturing and storing carbon dioxide for offshore solar power generation according to claim 1, wherein: and the gas inlets of the hydrogen and the oxygen of the primary battery are respectively provided with a one-way valve.
6. The self-circulating device for capturing and storing carbon dioxide for offshore solar power generation according to claim 1, wherein: a pressure sensor is arranged in the carbon dioxide storage ball.
7. The self-circulating device for capturing and storing carbon dioxide for offshore solar power generation according to claim 1, wherein: the quick-mounting device comprises a locking push rod controlled by a motor.
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