CN114588754A - Device and method for capturing and compressing air carbon dioxide - Google Patents
Device and method for capturing and compressing air carbon dioxide Download PDFInfo
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- CN114588754A CN114588754A CN202210204503.5A CN202210204503A CN114588754A CN 114588754 A CN114588754 A CN 114588754A CN 202210204503 A CN202210204503 A CN 202210204503A CN 114588754 A CN114588754 A CN 114588754A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/229—Integrated processes (Diffusion and at least one other process, e.g. adsorption, absorption)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D2053/221—Devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/22—Carbon dioxide
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
- Y02C20/00—Capture or disposal of greenhouse gases
- Y02C20/40—Capture or disposal of greenhouse gases of CO2
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
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Abstract
The invention relates to the field of carbon dioxide capture, in particular to a device and a method for capturing and compressing air carbon dioxide, which comprises a carbon dioxide capture device, a carbon dioxide compression device and a shell, wherein the carbon dioxide capture device and the carbon dioxide compression device are both positioned in the shell, and the carbon dioxide capture device comprises an air capture component: further comprising: the purification component is connected with the air capturing component and comprises a purification tank, the purification tank is positioned in the shell, the captured carbon dioxide gas is pre-collected, so that the carbon dioxide gas is introduced into the compressor at a constant speed, and the traditional carbon dioxide compressor is replaced by the thin-film compressor, so that the problems that the traditional carbon dioxide compressor is not beneficial to controlling the compression process, and the small-batch compression and low compression efficiency cannot be met are solved.
Description
Technical Field
The invention relates to the field of carbon dioxide capture, in particular to a device and a method for capturing and compressing air carbon dioxide.
Background
At present, the problems of the rise of the average temperature, the thawing of glaciers, the rise of sea level and the like caused by the greenhouse effect threaten the survival of human beings and become a problem to be solved urgently in the world. Greenhouse gases mainly comprise CO2, CH4, N20 and the like, wherein CO2 is the most main greenhouse gas, and the influence on the environment is the most serious among various greenhouse gases causing climate change, and the contribution rate of carbon dioxide to the greenhouse effect reaches 63 percent. Therefore, reducing the emission of carbon dioxide would be an important measure against the greenhouse effect.
With the development of modern science and technology, carbon dioxide can be used as a gas fertilizer, can be used for extinguishing fire, manufacturing a refrigerant and can be used as an industrial raw material in the chemical industry, so that the importance of capturing and compressing carbon dioxide in air is greater and greater;
the conventional carbon dioxide capture and compression device has the following disadvantages:
1. the traditional carbon dioxide is directly introduced into a compressor for compression after being captured, and the capturing amount of the carbon dioxide changes along with the content of the carbon dioxide in the flue gas, so that when the content of the carbon dioxide in the flue gas changes greatly, the transmission amount of the carbon dioxide transmitted into the compressor also changes, and the transmission process is a non-uniform process;
2. traditional carbon dioxide compressor need reach certain content and just can compress when carbon dioxide, consequently when compressing a small amount of carbon dioxide gas, traditional carbon dioxide compressor can not satisfy, and just can carry out work when it needs carbon dioxide to reach the threshold value, can not realize "limit pressure is failed in limit", and its work efficiency is not high.
Therefore, there is a need for an apparatus and method for capturing and compressing carbon dioxide from air.
Disclosure of Invention
Therefore, the invention provides a device and a method for capturing and compressing air carbon dioxide, which are used for pre-collecting captured carbon dioxide gas so as to introduce the carbon dioxide gas into a compressor at a constant speed, and simultaneously, a film compressor is adopted to replace the traditional carbon dioxide compressor so as to solve the problems that the traditional carbon dioxide compressor is not beneficial to controlling the compression process, and cannot meet the requirements of small-batch compression and low compression efficiency.
In order to achieve the above purpose, the invention provides the following technical scheme: an apparatus and method for air carbon dioxide capture and compression comprising a carbon dioxide capture device, a carbon dioxide compression device, and a housing, the carbon dioxide capture device and the carbon dioxide compression device both being located inside the housing, the carbon dioxide capture device comprising an air capture assembly: further comprising: a purification component connected with the air capture component;
the purification assembly comprises a purification tank, the purification tank is located inside the shell, saturated sodium bicarbonate solution is filled in the purification tank, a purification bottle is arranged inside the purification tank, the purification bottle is located inside the saturated sodium bicarbonate solution, the purification bottle is provided with a plurality of groups, the purification bottle is symmetrically arranged, the purification bottle is inverted and provided with a plurality of groups, the purification bottle is filled with saturated sodium bicarbonate solution, the bottle mouth of the purification bottle is blocked by the joint, the middle part of the purification bottle is blocked by the sodium bicarbonate solution conduction pipe, the two sides of the middle part of the purification bottle are respectively blocked by the carbon dioxide inlet pipe and the carbon dioxide discharge pipe, and the carbon dioxide inlet pipe, the sodium bicarbonate solution conduction pipe and the carbon dioxide discharge pipe are sealed, penetrated and blocked.
Preferably, carbon dioxide admission pipe one end and the contact of purification bottle bottom, sodium bicarbonate solution conduction pipe and carbon dioxide discharge pipe one end all are located purification bottle bottleneck department, the sodium bicarbonate solution conduction pipe other end is located inside the sodium bicarbonate solution, is located inside the purification bottle carbon dioxide discharge pipe bottleneck department inner wall fixed mounting has waterproof ventilated membrane.
Preferably, purification tank upper end fixed mounting has a sealed partition plate, form between sealed partition plate and the purification tank sealed interval, the multiunit the fixed sealed partition plate that runs through of carbon dioxide admission pipe other end, the sealed partition plate upper end is equipped with first carbon dioxide osmotic membrane, first carbon dioxide osmotic membrane both sides and casing both sides inner wall fixed connection, form the carbon dioxide reservoir between sealed partition plate and the first carbon dioxide osmotic membrane.
Preferably, the air trapping subassembly is including supporting the shell, support shell and casing upper end fixed connection, it is fixed to run through the casing upper wall to support the shell, it has electrostatic precipitator stick to support shell both sides inner wall fixed mounting, electrostatic precipitator stick is equipped with the multiunit, multiunit electrostatic precipitator stick layering sets up, is located the same layer electrostatic precipitator stick is linear array and arranges, and is adjacent two-layer be equipped with the second carbon dioxide osmotic membrane between the electrostatic precipitator stick.
Preferably, a gas supplementing pipeline is arranged on one side of the supporting shell and communicated with the second carbon dioxide permeable membrane positioned in the middle, a plurality of groups of negative pressure fans are fixedly mounted at the bottom of the supporting shell and communicated with the second carbon dioxide permeable membrane positioned at the bottommost part.
Preferably, carbon dioxide compression device includes the film compressor, the film compressor is located inside the casing, the film compressor includes the casing, casing both sides inner wall rotates and is connected with same crank axle, it is connected with two sets of connecting rods to rotate on the crank axle, and is two sets of the connecting rod end all rotates and is connected with sealed traveller, and is two sets of sealed traveller all seals sliding connection with the casing inside wall.
Preferably, two sets of sealed traveller upper end all is equipped with the metal film, and is two sets of metal film and the sealed fixed connection of casing inside wall, form the sealed interval between metal film and the sealed traveller, the casing upper end is equipped with two sets of air inlets and two sets of gas outlets respectively, and is two sets of air inlet and two sets of gas outlet bottoms all are equipped with gaseous check valve, gaseous check valve bottom and metal film contact, casing one side fixed mounting has servo motor, servo motor output shaft and crank axle fixed connection.
Preferably, be located the left end fixed mounting has the secondary compression pipe on the gas outlet, the secondary compression pipe other end and the air inlet fixed connection who is located the right-hand member, many the terminal fixed mounting of carbon dioxide discharge pipe has same root prepressing pipe, prepressing pipe is terminal with the air inlet fixed connection who is located the left end, be located the right-hand member fixed mounting has the shunt tubes on the gas outlet, equal fixed mounting has gas cylinder communicating pipe in shunt tubes each mouth of pipe department.
Preferably, a heating box is fixedly mounted on one side of the shell, a plurality of groups of heating sheets are arranged on the inner side wall of the heating box, a plurality of groups of carbon dioxide liquid storage bottles are clamped inside the heating box, and the air pressure valves at the bottle openings of the carbon dioxide liquid storage bottles are fixedly connected with the air bottle communicating pipe.
Preferably, the use method of the device for capturing and compressing the carbon dioxide in the air further comprises the following specific operation steps:
s1: the negative pressure fan is opened by a user, the air and the dust in the air enter the supporting shell through the air supplementing pipeline, meanwhile, the gas and the dust in the air also enter the supporting shell from the uppermost part of the supporting shell, the electrostatic dust removal rod is electrified, the electrostatic dust removal rod adsorbs the dust in the air introduced into the supporting shell, meanwhile, through the negative pressure generated by the negative pressure fan, air can penetrate through the multiple layers of second carbon dioxide permeable membranes and the negative pressure fan to enter the upper part of the first carbon dioxide permeable membrane, other gases in the air are blocked through the permeation action of the second carbon dioxide permeable membranes, carbon dioxide gas enters the shell, the internal air pressure is increased along with the continuous accumulation of the carbon dioxide gas in the shell, redundant carbon dioxide gas penetrates through the first carbon dioxide permeable membrane to enter the carbon dioxide storage area, and meanwhile, the first carbon dioxide permeable membrane has the screening effect;
s2: when carbon dioxide gas needs to be compressed, the servo motor is turned on, the output shaft of the servo motor drives the crank shaft to rotate, so that the crank shaft is forced to drive the two groups of connecting rods to rotate, the sealing sliding columns connected with the connecting rods are driven to reciprocate, the air pressure in the sealing section at the upper parts of the two groups of sealing sliding columns is changed, when the sealing sliding columns move downwards, the air pressure in the sealing section is reduced, the metal film moves, the gas one-way valve in the left-end air inlet is conducted, and negative pressure is generated in the prepressing tube connected with the left-end air inlet;
s3: with the accumulation of carbon dioxide gas in the carbon dioxide storage area, redundant carbon dioxide gas enters the purifying bottle along with the carbon dioxide inlet pipe, with the increase of the carbon dioxide gas in the purifying bottle, saturated sodium bicarbonate solution in the purifying bottle is discharged into the purifying tank through the sodium bicarbonate solution conducting pipe, and because the prepressing pipe is communicated with the carbon dioxide discharge pipe, when negative pressure is generated in the prepressing pipe, the carbon dioxide gas in the purifying bottle can enter the carbon dioxide discharge pipe and the prepressing pipe, so that the carbon dioxide gas enters the air inlet at the left end of the film compressor, and when the carbon dioxide gas in the purifying bottle enters the carbon dioxide discharge pipe, under the action of pressure, the saturated sodium bicarbonate solution in the purifying tank can enter the purifying bottle through the sodium bicarbonate solution conducting pipe;
s4: when the sealed sliding column moves upwards, the air pressure in the sealed area is increased, the metal film moves, the gas one-way valve in the gas outlet at the left end is conducted, at the moment, carbon dioxide gas sucked into the metal film is compressed, the compressed carbon dioxide gas is discharged into the secondary compression pipe from the gas outlet, the metal film at the right end can carry out secondary compression on the carbon dioxide gas introduced into the right end along with the movement of the sealed sliding column, and the carbon dioxide gas after secondary compression is discharged into the carbon dioxide liquid storage bottle through the shunt pipe and the gas bottle communicating pipe;
s5: the carbon dioxide gas discharged into the carbon dioxide liquid storage bottle is increased continuously, the air pressure in the carbon dioxide liquid storage bottle is increased gradually, when the air pressure in the carbon dioxide liquid storage bottle reaches 7.14MPa, the carbon dioxide liquid storage bottle is heated through the heating sheet, the temperature of the carbon dioxide gas in the carbon dioxide liquid storage bottle is made to reach 31.3 ℃, and then the liquefaction of the carbon dioxide gas in the carbon dioxide liquid storage bottle can be realized, so that the storage of the carbon dioxide is realized.
The invention has the beneficial effects that:
1. a user collects carbon dioxide in air by opening the negative pressure fan and through the dedusting effect of the electrostatic dedusting rod and the screening effect of the second carbon dioxide permeable membrane, the collected carbon dioxide is collected into the purification bottle by a saturated sodium bicarbonate solution discharging method, and then the negative pressure in the carbon dioxide discharge pipe connected with the film compressor and the negative pressure in the prepressing pipe are changed by starting the servo motor, so that carbon dioxide in the purification bottle is extracted, the transmission quantity of the carbon dioxide introduced into the film compressor is guaranteed to be a fixed value, the compression process is convenient to control, and the saturated sodium bicarbonate solution in the purification tank can clean the carbon dioxide;
2. the film compressor can only compress the introduced carbon dioxide, the compression amount of the film compressor is related to the stroke and the motion frequency of the piston, the compression amount of the film compressor can be changed by controlling the power of the servo motor, when the power of the motor is constant, the compression amount of the film compressor is constant, and because the compression amount of the film compressor is constant, carbon dioxide gas can be continuously introduced into the carbon dioxide liquid storage bottle, at the moment, the gas pressure in the carbon dioxide liquid storage bottle is continuously increased, when the gas pressure in the carbon dioxide liquid storage bottle reaches 7.14MPa, the carbon dioxide liquid storage bottle is heated by the heating sheet, so that the temperature of the carbon dioxide gas in the carbon dioxide liquid storage bottle reaches 31.3 ℃, and the liquefaction of the gas carbon dioxide in the carbon dioxide liquid storage bottle can be realized, thereby the carbon dioxide is stored, the 'side-transfusion pressure' can be realized, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic structural view provided by the present invention;
FIG. 2 is a view of the internal structure of the purification assembly provided by the present invention;
FIG. 3 is a view showing an installation position of the sealing diaphragm provided by the present invention;
FIG. 4 is a view showing the internal structure of the purification tank according to the present invention;
FIG. 5 is a schematic structural view of a carbon dioxide compression device provided by the present invention;
FIG. 6 is a schematic structural diagram of a film type compressor provided in the present invention;
fig. 7 is an internal structure view of a film type compressor provided in the present invention;
FIG. 8 is a schematic structural view of an air capture assembly provided by the present invention;
FIG. 9 is a cross-sectional view of an air capture assembly provided by the present invention;
fig. 10 is a schematic view of the internal structure of the purification bottle according to the present invention.
In the figure: the device comprises a carbon dioxide capture device 100, a purification assembly 110, a purification tank 111, a purification bottle 112, a plug 113, a carbon dioxide inlet pipe 114, a sodium bicarbonate solution conducting pipe 115, a carbon dioxide outlet pipe 116, a waterproof breathable film 117, a sealing partition 118, a first carbon dioxide permeable film 119, a carbon dioxide storage area 120, an air capture assembly 130, a support shell 131, a gas supplementing pipeline 132, an electrostatic dust removal rod 133, a second carbon dioxide permeable film 134, a negative pressure fan 135, a pre-pressing pipe 140, a carbon dioxide compression device 200, a film compressor 210, a machine shell 211, a crankshaft 212, a connecting rod 213, a sealing sliding column 214, a metal film 215, a gas one-way valve 216, a gas inlet 217, a gas outlet 218, a servo motor 220, a secondary compression pipe 230, a shunt pipe 240, a gas cylinder communicating pipe 250, a heating box 260, a heating sheet 261, a carbon dioxide liquid storage bottle 270 and a shell 300.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to fig. 1 to 10, the present invention provides an apparatus and method for capturing and compressing carbon dioxide from air, including a carbon dioxide capturing device 100, a carbon dioxide compressing device 200, and a housing 300, wherein the carbon dioxide capturing device 100 and the carbon dioxide compressing device 200 are both located inside the housing 300, the carbon dioxide capturing device 100 includes an air capturing component 130: further comprising: a purification assembly 110 connected to the air capture assembly 130;
the purification assembly 110 comprises a purification tank 111, the purification tank 111 is located inside a housing 300, the housing 300 provides support for the purification tank 111, the purification tank 111 is filled with saturated sodium bicarbonate solution, carbon dioxide gas is insoluble in the saturated sodium bicarbonate solution, and when the saturated sodium bicarbonate solution is decomposed by heat, only carbon dioxide gas is generated, and no other gas impurities are generated, a purification bottle 112 is arranged inside the purification tank 111, the purification tank 111 provides an installation position for the purification bottle 112, the purification bottle 112 is located inside the saturated sodium bicarbonate solution, the purification bottle 112 is provided with a plurality of groups, the groups of purification bottles 112 are symmetrically arranged, the groups of purification bottles 112 are all inverted, since the molecular mass of the carbon dioxide gas is far less than that of the saturated sodium bicarbonate solution, when the carbon dioxide gas is introduced into the purification bottle 112, the carbon dioxide gas is located at the upper part, the saturated sodium bicarbonate solution is located at the lower part, therefore, the purifying bottles 112 are inverted for draining, the plurality of groups of purifying bottles 112 are filled with saturated sodium bicarbonate solution, the bottle mouth of the purifying bottles 112 is clamped with the plug 113, the sodium bicarbonate solution conducting tube 115 is clamped in the middle of the plug 113, the carbon dioxide inlet tube 114 and the carbon dioxide discharge tube 116 are respectively clamped in two sides of the middle of the plug 113, the plug 113 provides mounting positions for the carbon dioxide inlet tube 114, the sodium bicarbonate solution conducting tube 115 and the carbon dioxide discharge tube 116, the carbon dioxide inlet tube 114, the sodium bicarbonate solution conducting tube 115 and the carbon dioxide discharge tube 116 are sealed and penetrate through the plug 113, specifically, with the accumulation of carbon dioxide in the carbon dioxide storage area 120, redundant carbon dioxide enters the purifying bottles 112 along with the carbon dioxide inlet tube 114, and because the molecular mass of the carbon dioxide is far smaller than that of the saturated sodium bicarbonate solution, when the carbon dioxide is introduced into the purifying bottles 112, the carbon dioxide gas is at the upper part, the saturated sodium bicarbonate solution is at the lower part, and with the increase of the carbon dioxide gas in the purifying bottle 112, the saturated sodium bicarbonate solution in the purifying bottle 112 is discharged into the purifying tank 111 through the sodium bicarbonate solution conducting pipe 115 under the action of pressure, and because the pre-pressure pipe 140 is communicated with the carbon dioxide discharge pipe 116, when a negative pressure is generated in the pre-pressurizing pipe 140, the carbon dioxide gas in the purifying bottle 112 enters the carbon dioxide discharging pipe 116 and the pre-pressurizing pipe 140, and thus into the gas inlet 217 at the left end of the membrane compressor 210, and when the carbon dioxide gas in the purification bottle 112 enters the carbon dioxide discharge pipe 116, under the action of pressure, the saturated sodium bicarbonate solution in the purification tank 111 enters the purification bottle 112 through the sodium bicarbonate solution conduction pipe 115 to fill the generated gap, so that the carbon dioxide gas which is introduced again is convenient to discharge.
Further, one end of the carbon dioxide inlet pipe 114 contacts with the bottom of the purification bottle 112, one ends of the sodium bicarbonate solution conducting pipe 115 and the carbon dioxide discharge pipe 116 are both located at the bottle mouth of the purification bottle 112, the other end of the sodium bicarbonate solution conducting pipe 115 is located inside the sodium bicarbonate solution, a waterproof breathable film 117 is fixedly installed on the inner wall of the pipe mouth of the carbon dioxide discharge pipe 116 located inside the purification bottle 112, specifically, since the molecular mass of the carbon dioxide gas is far less than that of the saturated sodium bicarbonate solution, when the carbon dioxide gas is introduced into the purification bottle 112, the carbon dioxide gas is located at the upper part, so that one end of the carbon dioxide inlet pipe 114 contacts with the bottom of the purification bottle 112, the introduced carbon dioxide gas can be prevented from directly flowing out from the sodium bicarbonate solution conducting pipe 115 and the carbon dioxide discharge pipe 116, one end of the carbon dioxide discharge pipe 116 is arranged at the bottle mouth of the purification bottle 112, the carbon dioxide gas introduced into the membrane compressor 210 can be ensured to be cleaned, and meanwhile, the waterproof breathable film 117 is arranged at the pipe orifice of the carbon dioxide discharge pipe 116, so that the saturated sodium bicarbonate solution in the purification bottle 112 can be prevented from entering the membrane compressor 210.
Further, a sealing partition plate 118 is fixedly installed at the upper end of the purification tank 111, the purification tank 111 provides support for the sealing partition plate 118, a sealing interval is formed between the sealing partition plate 118 and the purification tank 111, and can prevent carbon dioxide gas formed by decomposing saturated sodium bicarbonate solution in the purification tank 111 from flowing out, the other ends of the multiple groups of carbon dioxide inlet pipes 114 fixedly penetrate through the sealing partition plate 118, a first carbon dioxide permeable membrane 119 is arranged at the upper end of the sealing partition plate 118, two sides of the first carbon dioxide permeable membrane 119 are fixedly connected with inner walls at two sides of the shell 300, a carbon dioxide storage area 120 is formed between the sealing partition plate 118 and the first carbon dioxide permeable membrane 119, specifically, the carbon dioxide storage area 120 can store carbon dioxide gas sucked by the air capture assembly 130, since the compression amount of the membrane compressor 210 is small, the provision of the carbon dioxide storage area 120 can reduce the operating pressure of the membrane compressor 210.
Further, the air trapping assembly 130 includes a supporting shell 131, the supporting shell 131 is fixedly connected with the upper end of the housing 300, the housing 300 provides support for the supporting shell 131, the supporting shell 131 fixedly penetrates through the upper wall of the housing 300, electrostatic precipitation rods 133 are fixedly mounted on the inner walls of two sides of the supporting shell 131, the supporting shell 131 provides support for the electrostatic precipitation rods 133, multiple groups of the electrostatic precipitation rods 133 are arranged, the multiple groups of the electrostatic precipitation rods 133 are arranged in a layered mode, the electrostatic precipitation rods 133 on the same layer are arranged in a linear array mode, a second carbon dioxide permeable membrane 134 is arranged between every two adjacent layers of the electrostatic precipitation rods 133, specifically, the electrostatic precipitation rods 133 (electrostatic elimination rods) can generate a large number of gas clusters with positive and negative charges, and charges on objects passing through an ion radiation area of the electrostatic precipitation rod can be neutralized. When the surface of the object is negatively charged, it will attract the positive charges in the radiation area, when the surface of the object is positively charged, it will attract the negative charges in the radiation area, so that the static electricity on the surface of the object is neutralized, and the purpose of eliminating the static electricity is achieved, at the same time, the dust with the charges is adsorbed, at the same time, the second carbon dioxide permeable membrane 134 and the first carbon dioxide permeable membrane 119 are both membranes made of acid fiber, polyimide, polysulfone, etc., and the different permeability of the membranes is utilized to separate, the driving force of the membrane separation is pressure difference, when the pressure difference exists on the two sides of the membrane, the gas component with high permeability permeates the membrane at a high speed, and forms a permeable gas flow, the majority of the gas with low permeability forms a residual gas flow on the gas inlet side of the membrane, and two gas flows are respectively led out, so as to achieve the purpose of separation, therefore, by opening the negative pressure fan 135, the gas and dust in the air enter the support shell 131 through the gas supplement pipe 132, meanwhile, the gas and dust in the air enter the supporting shell 131 from the uppermost part of the supporting shell 131, the electrostatic precipitator rod 133 is electrified to generate a large amount of air mass with positive and negative charges, which can attract the negative charges in the radiation region, so that the static electricity on the surface of the object is neutralized, the purpose of eliminating the static electricity is achieved, meanwhile, the dust with the positive charges is adsorbed, the electrostatic precipitator rod 133 adsorbs the dust in the air introduced into the supporting shell 131, meanwhile, through the negative pressure generated by the negative pressure fan 135, the air can pass through the multiple layers of second carbon dioxide permeable membranes 134 and the negative pressure fan 135 to enter the upper part of the first carbon dioxide permeable membrane 119, the negative pressure forms a pressure difference on the two surfaces of the second carbon dioxide permeable membranes 134, through the permeation effect of the second carbon dioxide permeable membranes 134, other gases in the air are blocked, the carbon dioxide gas enters the shell 300, and is continuously accumulated along with the carbon dioxide gas in the shell 300, the internal gas pressure increases and the excess carbon dioxide gas passes through the first carbon dioxide permeable membrane 119 into the carbon dioxide storage area 120, while the first carbon dioxide permeable membrane 119 has a sieving effect.
Further, a gas supplementing pipe 132 is arranged on one side of the supporting shell 131, the supporting shell 131 provides support for the gas supplementing pipe 132, the gas supplementing pipe 132 is communicated with a second carbon dioxide permeable membrane 134 located in the middle, multiple sets of negative pressure fans 135 are fixedly installed at the bottom of the supporting shell 131, the multiple sets of negative pressure fans 135 are communicated with the second carbon dioxide permeable membrane 134 located at the bottommost portion, specifically, negative pressure generated by the negative pressure fans 135 can form pressure difference on two surfaces of the second carbon dioxide permeable membrane 134, so that the permeation effect of carbon dioxide is facilitated, meanwhile, multiple layers of second carbon dioxide permeable membranes 134 are arranged, multi-layer screening can be performed, and particularly, the second carbon dioxide permeable membranes 134 arranged between two layers of electrostatic precipitation rods 133 are wavy, so that the pressure difference of each surface is different, and the permeability of carbon dioxide is high.
Further, the carbon dioxide compression device 200 includes a film compressor 210, the film compressor 210 is located inside the housing 300, the film compressor 210 includes a housing 211, inner walls of two sides of the housing 211 are rotatably connected with a same crank shaft 212, the housing 211 supports the crank shaft 212, the crank shaft 212 is rotatably connected with two sets of connecting rods 213, the crank shaft 212 supports the connecting rods 213, ends of the two sets of connecting rods 213 are rotatably connected with sealed sliding columns 214, the two sets of sealed sliding columns 214 are slidably connected with inner side walls of the housing 211 in a sealed manner, specifically, by opening the servo motor 220, an output shaft of the servo motor 220 drives the crank shaft 212 to rotate, so that the crank shaft 212 drives the two sets of connecting rods 213 to rotate, thereby driving the sealed sliding columns 214 connected with the connecting rods 213 to reciprocate, and changing air pressure in a sealed area at upper portions of the two sets of sealed sliding columns 214.
Furthermore, the upper ends of the two groups of sealed sliding columns 214 are respectively provided with a metal film 215, the two groups of metal films 215 are fixedly connected with the inner side wall of the machine shell 211 in a sealing manner, the machine shell 211 provides support for the metal films 215, a sealing area is formed between the metal films 215 and the sealed sliding columns 214, the upper end of the machine shell 211 is respectively provided with two groups of air inlets 217 and two groups of air outlets 218, the machine shell 211 provides mounting positions for the two groups of air inlets 217 and the two groups of air outlets 218, the bottom ends of the two groups of air inlets 217 and the two groups of air outlets 218 are respectively provided with an air one-way valve 216, the bottom end of the air one-way valve 216 is in contact with the metal films 215, one side of the shell 300 is fixedly provided with a servo motor 220, the output shaft of the servo motor 220 is fixedly connected with the crank shaft 212, when the sealing spool 214 moves downward, the air pressure in the sealing area decreases, the metal film 215 moves, and the air check valve 216 in the left inlet port 217 is opened, so that a negative pressure is generated in the pre-pressing pipe 140 connected to the left inlet port 217.
Further, a secondary compression pipe 230 is fixedly installed on the air outlet 218 at the left end, the air outlet 218 at the left end provides support for the secondary compression pipe 230, the other end of the secondary compression pipe 230 is fixedly connected with the air inlet 217 at the right end, the air inlet 217 at the right end provides support for the secondary compression pipe 230, the same pre-compression pipe 140 is fixedly installed at the tail ends of the carbon dioxide discharge pipes 116, the tail end of the pre-compression pipe 140 is fixedly connected with the air inlet 217 at the left end, the air inlet 217 at the left end provides support for the pre-compression pipe 140, a shunt pipe 240 is fixedly installed on the air outlet 218 at the right end, the air outlet 218 at the right end provides support for the shunt pipe 240, an air cylinder communicating pipe 250 is fixedly installed at each pipe opening of the shunt pipe 240, specifically, when the sealing strut 214 moves upwards, the air pressure in the sealing area is increased, the metal film 215 moves, the air check valve 216 in the air outlet 218 at the left end is conducted, at this time, the carbon dioxide gas sucked into the metal film 215 is compressed, the compressed carbon dioxide gas is discharged from the gas outlet 218 into the secondary compression pipe 230, the metal film 215 at the right end secondarily compresses the carbon dioxide gas introduced into the right end along with the movement of the sealing spool 214, and the secondarily compressed carbon dioxide gas is discharged into the carbon dioxide liquid storage bottle 270 through the shunt pipe 240 and the gas cylinder communicating pipe 250.
Further, a heating box 260 is fixedly installed at one side of the housing 300, the housing 300 provides support for the heating box 260, a plurality of groups of heating sheets 261 are arranged on the inner side wall of the heating box 260, a plurality of groups of carbon dioxide liquid storage bottles 270 are clamped in the heating box 260, the heating box 260 provides support for the carbon dioxide liquid storage bottles 270, the air pressure valves at the bottle openings of the plurality of groups of carbon dioxide liquid storage bottles 270 are fixedly connected with the air bottle communicating pipe 250, specifically, as the carbon dioxide gas discharged into the carbon dioxide liquid storage bottles 270 is continuously increased, the air pressure in the carbon dioxide liquid storage bottles 270 is gradually increased, when the air pressure in the carbon dioxide liquid storage bottle 270 reaches 7.14MPa, the carbon dioxide liquid storage bottle 270 is heated by the heating sheet 261 to make the temperature of the carbon dioxide gas inside reach 31.3 ℃, the liquefaction of the gaseous carbon dioxide in the carbon dioxide liquid storage bottle 270 can be realized, thereby realizing the storage of the carbon dioxide.
Further, the use method of the device for capturing and compressing the air carbon dioxide further comprises the following specific operation steps:
s1: when a user opens the negative pressure fan 135, the air and dust in the air enter the supporting shell 131 through the air replenishing pipe 132, and simultaneously the air and dust in the air enter the supporting shell 131 from the uppermost part of the supporting shell 131, the electrostatic precipitator rod 133 is energized, the electrostatic precipitator rod 133 adsorbs the dust in the air introduced into the supporting shell 131, and simultaneously through the negative pressure generated by the negative pressure fan 135, the air enters the upper part of the first carbon dioxide permeable membrane 119 through the multiple layers of the second carbon dioxide permeable membranes 134 and the negative pressure fan 135, and through the permeation action of the second carbon dioxide permeable membrane 134, other gases in the air are blocked, the carbon dioxide enters the shell 300, and as the carbon dioxide in the shell 300 continuously accumulates, the internal air pressure increases, and the redundant carbon dioxide passes through the first carbon dioxide permeable membrane 119 and enters the carbon dioxide storage area 120, meanwhile, the first carbon dioxide permeable membrane 119 has a screening function;
s2: when carbon dioxide gas needs to be compressed, the servo motor 220 is opened, the output shaft of the servo motor 220 drives the crank shaft 212 to rotate, so that the crank shaft 212 is forced to drive the two groups of connecting rods 213 to rotate, the sealing sliding columns 214 connected with the connecting rods 213 are driven to reciprocate, the air pressure in the upper sealing sections of the two groups of sealing sliding columns 214 is changed, when the sealing sliding columns 214 move downwards, the air pressure in the sealing sections is reduced, the metal film 215 moves, the gas one-way valve 216 in the left-end air inlet 217 is communicated, and negative pressure is generated in the pre-pressing pipe 140 connected with the left-end air inlet 217;
s3: with the accumulation of carbon dioxide gas in the carbon dioxide storage area 120, excess carbon dioxide gas enters the purifying bottle 112 along with the carbon dioxide inlet pipe 114, with the increase of carbon dioxide gas in the purifying bottle 112, saturated sodium bicarbonate solution in the purifying bottle 112 is discharged into the purifying tank 111 through the sodium bicarbonate solution conducting pipe 115, and because the prepressing pipe 140 is communicated with the carbon dioxide discharge pipe 116, when negative pressure is generated in the prepressing pipe 140, carbon dioxide gas in the purifying bottle 112 enters the carbon dioxide discharge pipe 116 and the prepressing pipe 140, and then enters the air inlet 217 at the left end of the film compressor 210, and when carbon dioxide gas in the purifying bottle 112 enters the carbon dioxide discharge pipe 116, saturated sodium bicarbonate solution in the purifying tank 111 enters the purifying bottle 112 through the sodium bicarbonate solution conducting pipe 115 under the action of pressure;
s4: when the sealed sliding column 214 moves upwards, the air pressure in the sealed area is increased, the metal film 215 moves, the gas one-way valve 216 in the air outlet 218 at the left end is communicated, at the moment, the carbon dioxide gas sucked into the metal film 215 is compressed, the compressed carbon dioxide gas is discharged into the secondary compression pipe 230 from the air outlet 218, along with the movement of the sealed sliding column 214, the metal film 215 at the right end performs secondary compression on the carbon dioxide gas introduced into the right end, and the carbon dioxide gas after secondary compression is discharged into the carbon dioxide liquid storage bottle 270 through the shunt pipe 240 and the gas cylinder communicating pipe 250;
s5: with the increase of the carbon dioxide gas discharged into the carbon dioxide liquid storage bottle 270, the air pressure in the carbon dioxide liquid storage bottle 270 gradually rises, and when the air pressure in the carbon dioxide liquid storage bottle 270 reaches 7.14MPa, the heating sheet 261 heats the carbon dioxide liquid storage bottle 270 to make the temperature of the carbon dioxide gas in the carbon dioxide liquid storage bottle 270 reach 31.3 ℃, so that the liquefaction of the carbon dioxide gas in the carbon dioxide liquid storage bottle 270 can be realized, and the storage of the carbon dioxide is realized.
The using process of the invention is as follows: the person skilled in the art opens the negative pressure fan 135, the air and dust in the air enter the inside of the supporting housing 131 through the air replenishing pipe 132, and simultaneously the air and dust in the air enter the inside of the supporting housing 131 from the uppermost portion of the supporting housing 131, the electrostatic precipitator rod 133 is energized, the electrostatic precipitator rod 133 adsorbs the dust in the air introduced into the inside of the supporting housing 131, and simultaneously through the negative pressure generated by the negative pressure fan 135, the air will enter the upper portion of the first carbon dioxide permeable membrane 119 through the multiple layers of the second carbon dioxide permeable membranes 134 and the negative pressure fan 135, and through the permeation action of the second carbon dioxide permeable membrane 134, the other gases in the air are blocked, the carbon dioxide gas enters the inside of the housing 300, and as the carbon dioxide gas in the housing 300 continuously accumulates, the internal air pressure increases, and the surplus carbon dioxide gas enters the carbon dioxide storage region 120 through the first carbon dioxide permeable membrane 119, meanwhile, the first carbon dioxide permeable membrane 119 has a screening function, and as the carbon dioxide gas in the carbon dioxide storage area 120 is accumulated, the redundant carbon dioxide gas enters the purifying bottle 112 along with the carbon dioxide entering pipe 114, and because the molecular mass of the carbon dioxide gas is much smaller than that of the saturated sodium bicarbonate solution, when the carbon dioxide gas is introduced into the purifying bottle 112, the carbon dioxide gas is at the upper part, the saturated sodium bicarbonate solution is at the lower part, and as the carbon dioxide gas in the purifying bottle 112 increases, the saturated sodium bicarbonate solution in the purifying bottle 112 is discharged into the purifying tank 111 through the sodium bicarbonate solution conducting pipe 115 under the action of pressure, and because the pre-pressing pipe 140 is communicated with the carbon dioxide discharge pipe 116, when negative pressure is generated in the pre-pressing pipe 140, the carbon dioxide gas in the purifying bottle 112 enters the carbon dioxide discharge pipe 116 and the pre-pressing pipe 140, therefore, the gas enters the gas inlet 217 at the left end of the film compressor 210, when the carbon dioxide gas in the purifying bottle 112 enters the carbon dioxide discharge pipe 116, under the action of pressure, the saturated sodium bicarbonate solution in the purifying tank 111 enters the purifying bottle 112 through the sodium bicarbonate solution conducting pipe 115 to fill the generated gap, so that the carbon dioxide gas which is introduced again is discharged conveniently, when the carbon dioxide gas needs to be compressed, the output shaft of the servo motor 220 drives the crank shaft 212 to rotate by opening the servo motor 220, so that the crank shaft 212 drives the two groups of connecting rods 213 to rotate, and the sealing sliding columns 214 connected with the connecting rods 213 are driven to reciprocate, so that the gas pressure in the upper sealing intervals of the two groups of sealing sliding columns 214 is changed, when the sealing sliding columns 214 move downwards, the gas pressure in the sealing intervals is reduced, the metal film 215 moves, and the gas one-way valve 216 in the gas inlet 217 at the left end is conducted, so as to generate negative pressure in the pre-pressing pipe 140 connected with the left end air inlet 217, when the sealed sliding column 214 moves upwards, the air pressure in the sealed area increases, the metal film 215 moves, the air one-way valve 216 in the left end air outlet 218 is conducted, at this time, the carbon dioxide gas sucked in on the metal film 215 is compressed, the compressed carbon dioxide gas is discharged into the secondary compression pipe 230 from the air outlet 218, along with the movement of the sealed sliding column 214, the metal film 215 at the right end performs secondary compression on the carbon dioxide gas introduced into the right end, the carbon dioxide gas after secondary compression is discharged into the carbon dioxide liquid storage bottle 270 through the shunt pipe 240 and the air bottle 250, along with the continuous increase of the carbon dioxide gas discharged into the carbon dioxide liquid storage bottle 270, the air pressure in the carbon dioxide liquid storage bottle 270 gradually increases, when the air pressure in the carbon dioxide liquid storage bottle 270 reaches 7.14MPa, the carbon dioxide liquid storage bottle 270 is heated by the heating sheet 261, so that the temperature of carbon dioxide gas inside the carbon dioxide liquid storage bottle 270 reaches 31.3 ℃, and the liquefaction of the gas carbon dioxide in the carbon dioxide liquid storage bottle 270 can be realized, thereby realizing the storage of carbon dioxide.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (10)
1. An apparatus for air carbon dioxide capture and compression, comprising a carbon dioxide capture device (100), a carbon dioxide compression device (200) and a housing (300), the carbon dioxide capture device (100) and the carbon dioxide compression device (200) both being located inside the housing (300), characterized in that: the carbon dioxide capture device (100) comprises an air capture assembly (130): further comprising: a purification assembly (110) connected to the air capture assembly (130);
purify subassembly (110) including purification tank (111), purification tank (111) are located inside casing (300), purification tank (111) inside packing has the sodium bicarbonate solution of saturation, purification tank (111) inside is equipped with purification bottle (112), it is inside that purification bottle (112) are located the sodium bicarbonate solution of saturation, purification bottle (112) are equipped with the multiunit, multiunit purification bottle (112) are the symmetry and set up, multiunit purification bottle (112) are all invertd, multiunit purification bottle (112) inside all fills the saturated sodium bicarbonate solution, purification bottle (112) bottleneck department joint has jam (113), jam (113) middle part joint has sodium bicarbonate solution conduction pipe (115), jam (113) middle part both sides joint has carbon dioxide admission pipe (114) and carbon dioxide discharge pipe (116) respectively, carbon dioxide admission pipe (114), The sodium bicarbonate solution conduction pipe (115) and the carbon dioxide discharge pipe (116) are sealed and penetrate through the plug (113).
2. An apparatus for air carbon dioxide capture and compression as claimed in claim 1 wherein: carbon dioxide admission pipe (114) one end and purification bottle (112) bottle end contact, sodium bicarbonate solution conduction pipe (115) all are located purification bottle (112) bottleneck department with carbon dioxide discharge pipe (116) one end, sodium bicarbonate solution conduction pipe (115) other end is located inside sodium bicarbonate solution, is located inside purification bottle (112) the inner wall fixed mounting of carbon dioxide discharge pipe (116) mouth of pipe department has waterproof ventilated membrane (117).
3. An apparatus for air carbon dioxide capture and compression as claimed in claim 1 wherein: purification pond (111) upper end fixed mounting has sealed baffle (118), form between sealed baffle (118) and the purification pond (111) sealed interval, the multiunit carbon dioxide admission pipe (114) other end is fixed to run through sealed baffle (118), sealed baffle (118) upper end is equipped with first carbon dioxide osmotic membrane (119), first carbon dioxide osmotic membrane (119) both sides and casing (300) both sides inner wall fixed connection, form carbon dioxide reservoir (120) between sealed baffle (118) and first carbon dioxide osmotic membrane (119).
4. An apparatus for air carbon dioxide capture and compression as claimed in claim 1 wherein: air entrapment subassembly (130) is including supporting shell (131), support shell (131) and casing (300) upper end fixed connection, support shell (131) and fix and run through casing (300) upper wall, support shell (131) both sides inner wall fixed mounting have electrostatic precipitator stick (133), electrostatic precipitator stick (133) are equipped with multiunit, multiunit electrostatic precipitator stick (133) layering sets up, is located the one deck electrostatic precipitator stick (133) are linear array and arrange, adjacent two-layer be equipped with second carbon dioxide osmotic membrane (134) between electrostatic precipitator stick (133).
5. An apparatus for air carbon dioxide capture and compression as claimed in claim 4 wherein: support shell (131) one side and be equipped with gaseous supplementary pipeline (132), gaseous supplementary pipeline (132) and second carbon dioxide osmotic membrane (134) intercommunication that are located the middle part, support shell (131) bottom fixed mounting have multiunit negative pressure fan (135), multiunit negative pressure fan (135) and the second carbon dioxide osmotic membrane (134) intercommunication that are located the bottommost.
6. An apparatus for air carbon dioxide capture and compression as claimed in claim 1 wherein: carbon dioxide compressor arrangement (200) are including film compressor (210), film compressor (210) are located inside casing (300), film compressor (210) are including casing (211), casing (211) both sides inner wall rotates and is connected with same crank axle (212), it is connected with two sets of connecting rods (213) to rotate on crank axle (212), and is two sets of connecting rod (213) end all rotates and is connected with sealed traveller (214), and is two sets of sealed traveller (214) all with casing (211) inside wall sealing sliding connection.
7. An apparatus for air carbon dioxide capture and compression as claimed in claim 6 wherein: two sets of sealed traveller (214) upper end all is equipped with metallic film (215), and is two sets of metallic film (215) and casing (211) inside wall sealing fixed connection, form sealed interval between metallic film (215) and sealed traveller (214), casing (211) upper end is equipped with two sets of air inlet (217) and two sets of gas outlet (218) respectively, and is two sets of air inlet (217) and two sets of gas outlet (218) bottom all are equipped with gaseous check valve (216), gaseous check valve (216) bottom and metallic film (215) contact, casing (300) one side fixed mounting has servo motor (220), servo motor (220) output shaft and crank axle (212) fixed connection.
8. An apparatus for air carbon dioxide capture and compression as claimed in claim 7 wherein: be located the left end fixed mounting has secondary compression pipe (230) on gas outlet (218), secondary compression pipe (230) other end and air inlet (217) fixed connection who is located the right-hand member, many the terminal fixed mounting of carbon dioxide discharge pipe (116) has same root pressure pipe (140) in advance, pressure pipe (140) end and air inlet (217) fixed connection who is located the left end in advance are located the right-hand member fixed mounting has shunt tubes (240) on gas outlet (218), equal fixed mounting has gas cylinder communicating pipe (250) in shunt tubes (240) each mouth of pipe department.
9. An apparatus for air carbon dioxide capture and compression as claimed in claim 8 wherein: casing (300) one side fixed mounting has heating box (260), heating box (260) inside wall is equipped with multiunit heating plate (261), the inside joint of heating box (260) has multiunit carbon dioxide liquid storage bottle (270), multiunit carbon dioxide liquid storage bottle (270) bottleneck atmospheric pressure valve department and gas cylinder communicating pipe (250) fixed connection.
10. The method of use of an apparatus for air carbon dioxide capture and compression as claimed in claim 1 wherein: the method also comprises the following specific operation steps:
s1: when a user opens the negative pressure fan (135), gas and dust in the air enter the supporting shell (131) through the gas supplementing pipeline (132), and simultaneously the gas and dust in the air enter the supporting shell (131) from the uppermost part of the supporting shell (131), the electrostatic dust removing rod (133) is electrified, the electrostatic dust removing rod (133) adsorbs the dust in the air introduced into the supporting shell (131), meanwhile, through negative pressure generated by the negative pressure fan (135), the air enters the upper part of the first carbon dioxide permeable membrane (119) through the multiple layers of the second carbon dioxide permeable membranes (134) and the negative pressure fan (135), other gases in the air are blocked through the permeation of the second carbon dioxide permeable membranes (134), the carbon dioxide gas enters the shell (300), and the internal pressure increases along with the continuous accumulation of the carbon dioxide gas in the shell (300), the excess carbon dioxide gas passes through the first carbon dioxide permeable membrane (119) into the carbon dioxide storage zone (120), while the first carbon dioxide permeable membrane (119) has a sieving effect;
s2: when carbon dioxide gas needs to be compressed, the servo motor (220) is turned on, an output shaft of the servo motor (220) drives the crank shaft (212) to rotate, so that the crank shaft (212) is forced to drive the two groups of connecting rods (213) to rotate, the sealing sliding columns (214) connected with the connecting rods (213) are driven to reciprocate, air pressure in the upper sealing sections of the two groups of sealing sliding columns (214) is changed, when the sealing sliding columns (214) move downwards, the air pressure in the sealing sections is reduced, the metal film (215) moves, the air one-way valve (216) located in the left-end air inlet (217) is conducted, and negative pressure is generated in the pre-pressure pipe (140) connected with the left-end air inlet (217);
s3: with the accumulation of carbon dioxide gas in the carbon dioxide storage area (120), redundant carbon dioxide gas enters the purifying bottle (112) along with the carbon dioxide inlet pipe (114), with the increase of carbon dioxide gas in the purifying bottle (112), saturated sodium bicarbonate solution in the purifying bottle (112) is discharged into the purifying pool (111) through the sodium bicarbonate solution conducting pipe (115), and because the pre-pressing pipe (140) is communicated with the carbon dioxide discharge pipe (116), when negative pressure is generated in the pre-pressing pipe (140), carbon dioxide gas in the purifying bottle (112) enters the carbon dioxide discharge pipe (116) and the pre-pressing pipe (140), and then enters the air inlet (217) at the left end of the film compressor (210), when carbon dioxide gas in the purifying bottle (112) enters the carbon dioxide discharge pipe (116), under the action of pressure, saturated sodium bicarbonate solution in the purifying pool (111) enters the purifying bottle (112) through the sodium bicarbonate solution conducting pipe (115) 112) Inner;
s4: when the sealed sliding column (214) moves upwards, the air pressure in the sealed area is increased, the metal film (215) moves, the gas one-way valve (216) positioned in the air outlet (218) at the left end is communicated, at the moment, the carbon dioxide gas sucked in the metal film (215) is compressed, the compressed carbon dioxide gas is discharged into the secondary compression pipe (230) from the air outlet (218), along with the movement of the sealed sliding column (214), the metal film (215) positioned at the right end performs secondary compression on the carbon dioxide gas introduced into the right end, and the carbon dioxide gas after secondary compression is discharged into the carbon dioxide liquid storage bottle (270) through the shunt pipe (240) and the gas cylinder communicating pipe (250);
s5: with the increasing of the carbon dioxide gas discharged into the carbon dioxide liquid storage bottle (270), the air pressure in the carbon dioxide liquid storage bottle (270) is gradually increased, when the air pressure in the carbon dioxide liquid storage bottle (270) reaches 7.14MPa, the carbon dioxide liquid storage bottle (270) is heated through the heating sheet (261), the temperature of the carbon dioxide gas in the carbon dioxide liquid storage bottle (270) is made to reach 31.3 ℃, and the liquefaction of the carbon dioxide gas in the carbon dioxide liquid storage bottle (270) can be realized, so that the carbon dioxide storage is realized.
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