A device and method for chemically purifying and absorbing low-concentration double carbon

Abstract

The application discloses a kind of equipment and method for absorbing low-concentration double carbon by chemical purification, equipment includes purification bin body, first purification bin in upper portion in purification bin body, second purification bin in lower portion in purification bin body and intensification purification bin in middle portion in purification bin body;Method includes the following steps: S1, gas detection to be handled;S2, gas purification: S2-1, single CO2 purification mode;S2-2, single CO purification mode;S2-3, preliminary double carbon purification mode;S2-4, intensification double carbon purification mode.The application is based on two different purification bins, one of which carries a rotatable purification component, and the two types of purification filler can be used alternately, greatly avoiding the moisture of the purification filler and extending the service life. The intensification purification bin is filled with mixed purification filler, which can further purify double carbon gas, thereby improving the overall purification and absorption effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of low-carbon environmental protection, in particular to a device and method for chemically purifying and absorbing low-concentration double carbon. BACKGROUND

[0002] Double carbon refers to carbon monoxide (CO) and carbon dioxide (CO2), which are very common gases and are often treated as waste gas in industrial production. If high-concentration double carbon gas is discharged, it will cause serious pollution, so high-concentration double carbon gas is generally captured. If low-concentration double carbon gas is not properly treated, it will also cause harm, for example, in some enclosed workplaces, double carbon gas with gradually increasing concentration will cause poisoning of workers.

[0003] At present, low-concentration double carbon gas is in the research stage, and in most cases only one kind of gas needs to be purified and absorbed, and there is a lack of equipment that can simultaneously purify and absorb both gases. For example, the utility model patent with the publication number CN217367902U discloses a purifier with a particle pollutant filter membrane, belonging to the technical field of air filtration, which comprises a first filter layer, which is a cotton gauze filter layer, used for filtering PM10 particulate matter; a second filter layer, which is a hard non-woven fabric filter layer, used for filtering PM2.5 particulate matter. The utility model can efficiently filter PM2.5-PM10 particulate pollutants in the air through two filter layers, and the materials of the two filter layers are easy to obtain, which can be obtained by collecting old clothes, saving resources and relieving the pressure of degrading high molecular fibers in nature, embodying the green and environmental protection concept and responding to the double carbon emission reduction concept. The purifier of the utility model realizes the filtration of particulate pollutants through the filter membrane, adjusts the temperature in the shell by using the heating element, and then makes the formaldehyde catalyst work efficiently, cooperates with the unpowered air ball to promote air circulation, and greatly improves the air purification effect.

[0004] However, such devices have many disadvantages. When applied to large amounts of waste gas and large processing capacity, the processing effect is not good, and long-term use will also affect the use effect. SUMMARY

[0005] In view of the above problems, the present application provides a device and method for chemically purifying and absorbing low-concentration double carbon.

[0006] The technical scheme of the present application is:

[0007] A device for chemically purifying and absorbing low-concentration double carbon, comprising a purification bin body, a first purification bin located at the upper part in the purification bin body, a second purification bin located at the lower part in the purification bin body, and a reinforced purification bin located at the middle part in the purification bin body, the first purification bin is provided with an air inlet pipe at the top rear side, and the second purification bin is provided with an air outlet pipe at the front side wall.

[0008] The first purification bin and the second purification bin have the same internal structure, and each comprises a plurality of first baffles arranged alternately, and a purification assembly arranged between each first baffle, wherein the purification assembly comprises a rotatable air-permeable purification plate, the air-permeable purification plate is double-layered, a first purification filler is arranged in the upper layer of the air-permeable purification plate, and a second purification filler is arranged in the lower layer of the air-permeable purification plate, and the air-permeable purification plates on each purification assembly rotate synchronously.

[0009] The reinforced purification bin comprises a slidingly connected upper bin body and a lower bin body, the upper bin body is provided with a first air inlet at the front end, the lower bin body is provided with a second air inlet at the front end, the first air inlet and the second air inlet are connected and communicated when the lower bin body slides upward into the interior of the upper bin body, the upper bin body is provided with a fixed plate at the front end, the fixed plate is provided with an air inlet groove at the bottom, a plurality of second baffles are arranged alternately in the interior of the lower bin body, mixed purification fillers are arranged between each second baffle, and an auxiliary stirring assembly is arranged on the top wall of the upper bin body corresponding to each second baffle.

[0010] Further, the first baffles make the gas flow in the first purification bin and the second purification bin present an S shape, and the second baffles make the gas flow in the reinforced purification bin present an S shape.

[0011] Description: By changing the gas flow to prolong the contact time with the purification assembly, the purification effect is improved.

[0012] Further, the air-permeable purification plates on each purification assembly keep the first purification fillers upward or the second purification fillers upward when rotating to a horizontal state, a partition plate is arranged in the middle of the air-permeable purification plate for separating the first purification fillers and the second purification fillers, air-permeable membranes are arranged on the upper and lower sides of the air-permeable purification plate, and the first purification fillers and the second purification fillers are respectively filled in the air-permeable membranes.

[0013] Description: By selecting two different purification fillers to contact with the gas, the exposure time of the purification fillers that are not needed to be used is reduced, and the purification effect is avoided from being reduced due to damp.

[0014] Further, the air-permeable purification plate is located in the groove provided at the bottom surface of the first and second purification chambers, one end of the air-permeable purification plate is provided with a rotating shaft, the rotating shaft is rotationally connected with the inner wall of the top of the groove, a gear ring is provided at the middle part of the rotating shaft, the upper surface of the gear ring is higher than the groove, all the gear rings inside the first and second purification chambers are driven to rotate synchronously by a driving assembly, the driving assembly comprises a housing fixed on the bottom surface of the first or second purification chamber, a chain belt is provided inside the housing, the chain belt surrounds an annular shape and is connected with the gear ring at the bottom, and a driving wheel is connected with each end of the chain belt, a driving motor is provided on the inner wall of the housing corresponding to one of the driving wheels, the output shaft of the driving motor is connected with the center of the driving wheel, an auxiliary shaft is provided on the inner wall of the housing corresponding to the other driving wheel, the auxiliary shaft is connected with the center of the driving wheel, a sealing strip is provided at the two sides of the air-permeable purification plate, the sealing strip is attached to and sealed with the two side walls of the groove, and the housing penetrates the first baffle located at the side thereof.

[0015] Description: The synchronous control of all the purification assemblies can be realized by the driving assembly.

[0016] Further, a compression plate is provided at the rear side of the air inlet groove, a protrusion is provided at the center of the bottom of the lower chamber body, when the lower chamber body is slid upward into the interior of the upper chamber body, the compression plate is popped up to block the air inlet groove, when the lower chamber body is slid downward to move out of the interior of the upper chamber body, the compression plate is compressed by the protrusion to make the air inlet groove communicate with the space below the lower chamber body, the fixed plate is fixedly connected with the top plate of the second purification chamber, a plurality of through holes are provided at the rear side of the top plate, and the rear side of the lower chamber body is connected with the interior of the second purification chamber through a plurality of air guide pipes penetrating the top plate.

[0017] Description: The gas can enter different channels as required by the cooperation of the protrusion and the compression plate.

[0018] Further, the auxiliary stirring assembly comprises a rotating rod rotationally connected with the top wall of the upper chamber body, a fan blade is provided at the middle part of the rotating rod, and a stirring rod is provided at the bottom of the rotating rod, when the lower chamber body is slid upward into the interior of the upper chamber body, the stirring rod is located inside the mixed purification filler.

[0019] Description: The stirring effect of the mixed purification filler can be improved by the wind force of the gas in the flow process by the auxiliary stirring assembly, and the purification effect can be improved.

[0020] Further, an electro-hydraulic push rod is provided at one side of the purification chamber body, the output end of the electro-hydraulic push rod penetrates the purification chamber body and is connected with one side wall of the lower chamber body, the electro-hydraulic push rod is used to drive the lower chamber body to move up and down, and a detector is provided inside the air inlet pipe.

[0021] Description: The electro-hydraulic push rod is used to drive the lower chamber body.

[0022] Further, the first purification filler is one of LiOH, KOH or K2CO3 with a particle size less than 2mm, the second purification filler is a Cu-Mn-Ce composite oxide catalyst with a particle size less than 2mm, and the mixed purification filler is a mixture of the first purification filler and the second purification filler in a ratio of 1:1.

[0023] The preparation method of the Cu-Mn-Ce composite oxide catalyst is as follows: first, 1-2 parts of Cu(NO3)2·2H2O and 1-2 parts of Mn(NO3)2 are weighed by weight parts, and 4-8 parts of deionized water is added to dissolve to obtain a mixed solution, then 1-2 parts of CeO2 is immersed into the mixed solution and stirred thoroughly, and the dried sample is calcined at 500-550 DEG C for 2-3 hours to obtain the Cu-Mn-Ce composite oxide catalyst.

[0024] Description: The Cu-Mn-Ce composite oxide catalyst prepared by the method has a multi-metal synergistic effect at the interface and has good CO catalytic activity at room temperature or low temperature.

[0025] The application further discloses a method for chemically purifying and absorbing low-concentration double carbon, and the method is based on the equipment for chemically purifying and absorbing low-concentration double carbon in the above-mentioned item one and comprises the following steps.

[0026] S1, detecting the to-be-processed gas: detecting the to-be-processed mixed gas and classifying corresponding purification mode categories according to the detection result, if the to-be-processed mixed gas has:

[0027] 5% < CO2 concentration < 12% and CO concentration < 400ppm, which is a single CO2 purification mode;

[0028] CO2 concentration < 5% and 400ppm < CO concentration < 3000ppm, which is a single CO purification mode;

[0029] 5% < CO2 concentration < 12% and 400ppm < CO concentration < 3000ppm, which is a primary double carbon purification mode;

[0030] 12% < CO2 concentration and 3000ppm < CO concentration, which is an intensified double carbon purification mode;

[0031] S2, gas purification:

[0032] S2-1, single CO2 purification mode: the first purification filler of the air-permeable purification plate of the first purification bin and the second purification bin faces upward, the lower bin body slides downward to move out of the inside of the upper bin body, the air inlet groove is opened, the mixed gas to be treated is injected into the inside of the first purification bin through the air inlet pipe, S-shaped flow is formed through the first baffle and purification is carried out through the first purification filler, then the mixed gas directly flows through the bottom of the lower bin body through the air inlet groove and enters the second purification bin, S-shaped flow is formed through the first baffle and purification is carried out through the first purification filler again.

[0033] S2-2, single CO purification mode: the second purification filler of the air-permeable purification plate of the first purification bin and the second purification bin faces upward, the lower bin body slides downward to move out of the inside of the upper bin body, the air inlet groove is opened, the mixed gas to be treated is injected into the inside of the first purification bin through the air inlet pipe, S-shaped flow is formed through the first baffle and purification is carried out through the second purification filler, then the mixed gas directly flows through the bottom of the lower bin body through the air inlet groove and enters the second purification bin, S-shaped flow is formed through the first baffle and purification is carried out through the second purification filler again.

[0034] S2-3, primary double carbon purification mode: the air-permeable purification plate of the first purification bin and the second purification bin keeps rotating to make the first purification filler and the second purification filler alternately face upward, the lower bin body slides downward to move out of the inside of the upper bin body, the air inlet groove is opened, the mixed gas to be treated is injected into the inside of the first purification bin through the air inlet pipe, S-shaped flow is formed through the first baffle and purification is carried out through the first purification filler and the second purification filler, then the mixed gas directly flows through the bottom of the lower bin body through the air inlet groove and enters the second purification bin, S-shaped flow is formed through the first baffle and purification is carried out through the first purification filler and the second purification filler again.

[0035] S2-4, enhanced double carbon purification mode: the air-permeable purification plate of the first purification bin and the second purification bin keeps rotating to make the first purification filler and the second purification filler alternately face upward, the lower bin body slides upward to enter the inside of the upper bin body, the air inlet groove closes the first air inlet hole and the second air inlet hole to be connected and communicated, the mixed gas to be treated is injected into the inside of the first purification bin through the air inlet pipe, S-shaped flow is formed through the first baffle and purification is carried out through the first purification filler and the second purification filler, then the mixed gas enters the inside of the lower bin body, S-shaped flow is formed through the second baffle and purification is carried out through the mixed purification filler, then enters the second purification bin, S-shaped flow is formed through the first baffle and purification is carried out through the first purification filler and the second purification filler again.

[0036] The beneficial effects of the application are:

[0037] (1) The application provides a device capable of synchronously purifying and absorbing low-concentration double carbon and a corresponding complete method, wherein the device is based on two different purification bins, one of which is equipped with a rotatable purification assembly, and two kinds of purification fillers can be alternately used to greatly avoid the moisture of the purification filler and prolong the service life, and the reinforced purification bin is internally filled with mixed purification filler, which can further deeply purify the double carbon gas, thereby improving the overall purification and absorption effect.

[0038] (2) The method for chemically purifying and absorbing low-concentration double carbon provided by the application provides four different working modes according to the concentration content of double carbon gas, is targeted, and can realize double carbon gas purification with the lowest energy consumption and material consumption.

[0039] (3) The application can be applied to tail gas treatment of waste gas production sites or indoor air purification of closed work sites, such as workshops, laboratories, submarines, space stations and the like, can quickly effect on low-concentration double carbon gas, and has good use effect. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is the overall structure schematic diagram of the device for chemically purifying and absorbing low-concentration double carbon of the application;

[0041] Figure 2 is the internal structure schematic diagram of the device for chemically purifying and absorbing low-concentration double carbon of the application;

[0042] Figure 3 is the internal structure front view of the device for chemically purifying and absorbing low-concentration double carbon of the application;

[0043] Figure 4 is the first purification bin top view of the device for chemically purifying and absorbing low-concentration double carbon of the application;

[0044] Figure 5 is the purification assembly structure schematic diagram of the device for chemically purifying and absorbing low-concentration double carbon of the application;

[0045] Figure 6 is the purification assembly sectional view of the device for chemically purifying and absorbing low-concentration double carbon of the application;

[0046] Figure 7 is the internal structure schematic diagram of the driving assembly of the device for chemically purifying and absorbing low-concentration double carbon of the application;

[0047] Figure 8 is the internal structure left view of the device for chemically purifying and absorbing low-concentration double carbon of the application after omitting the fixed plate;

[0048] Figure 9It is the internal right rear bottom structure schematic diagram of a chemical purification equipment for absorbing low concentration double carbon of the application;

[0049] Figure 10 It is the lower bin body internal structure plan view and auxiliary stirring assembly position schematic diagram of a chemical purification equipment for absorbing low concentration double carbon of the application;

[0050] Figure 11 It is the auxiliary stirring assembly structure schematic diagram of a chemical purification equipment for absorbing low concentration double carbon of the application.

[0051] Wherein, 1-purification bin body, 11-first purification bin, 12-second purification bin, 13-enhanced purification bin, 14-air inlet pipe, 141-detector, 15-air outlet pipe, 16-first baffle, 17-groove, 18-top plate, 181-through hole, 2-purification assembly, 21-air permeable purification plate, 22-baffle, 23-air permeable membrane, 24-rotating shaft, 25-tooth ring, 26-sealing strip, 3-upper bin body, 31-first air inlet hole, 32-fixing plate, 33-air inlet groove, 34-compression plate, 4-lower bin body, 41-second air inlet hole, 42-second baffle, 43-protruding block, 44-air guide pipe, 5-auxiliary stirring assembly, 51-rotating rod, 52-fan blade, 53-stirring rod, 6-driving assembly, 61-housing, 62-chain belt, 63-driving wheel, 64-driving motor, 65-auxiliary shaft, 7-electro-hydraulic push rod. DETAILED DESCRIPTION

[0052] Example 1

[0053] As shown in Figure 1 and Figure 2 , a chemical purification equipment for absorbing low concentration double carbon includes a purification bin body 1, a first purification bin 11 located at the upper part in the purification bin body 1, a second purification bin 12 located at the lower part in the purification bin body 1, and an enhanced purification bin 13 located at the middle part in the purification bin body 1, the first purification bin 11 is provided with an air inlet pipe 14 at the top rear side, and the second purification bin 12 is provided with an air outlet pipe 15 at the front side wall;

[0054] As shown in Figures 2 to 6 , the internal structures of the first purification bin 11 and the second purification bin 12 are the same, both of which include nine first baffles 16 arranged alternately, the first baffles 16 make the gas flow in the first purification bin 11 and the second purification bin 12 present an S shape, a purification assembly 2 is located between each first baffle 16, the purification assembly 2 includes a rotatable air permeable purification plate 21, the air permeable purification plate 21 is double-layered, the upper layer in the air permeable purification plate 21 is provided with first purification filler, and the lower layer in the air permeable purification plate 21 is provided with second purification filler, the air permeable purification plates 21 on each purification assembly 2 rotate synchronously;

[0055] AsFigures 4 to 7 As shown, when the breathable purification plates 21 on each purification component 2 are rotated to a horizontal state, they all have either the first purification packing facing upwards or both have the second purification packing facing upwards. A partition 22 is provided in the middle of the breathable purification plate 21 to separate the first and second purification packings. Breathable membranes 23 are provided on both the upper and lower sides of the breathable purification plate 21, and the two breathable membranes 23 are filled with the first and second purification packings respectively. The breathable purification plate 21 is located in a groove 17 provided on the bottom surface of the first purification chamber 11 and the second purification chamber 12. A rotating shaft 24 is provided at one end of the breathable purification plate 21, and the rotating shaft 24 is rotatably connected to the inner wall of the top of the groove 17. A toothed ring 25 is provided in the middle of the rotating shaft 24, and the upper surface of the toothed ring 25 is higher than the groove 17. All the toothed rings 25 inside the first purification chamber 11 or the second purification chamber 12 are driven to rotate synchronously by a driving component 6. The drive assembly 6 includes a housing 61 fixed to the bottom surface of the first purification chamber 11 or the second purification chamber 12. Inside the housing 61, there is a chain belt 62. The chain belt 62 forms a ring and its bottom is engaged with a toothed ring 25. Each end of the chain belt 62 is engaged with a drive wheel 63. One of the drive wheels 63 is equipped with a drive motor 64 on the inner wall of the housing 61. The drive motor 64 is a commercially available gear reduction motor. The output shaft of the drive motor 64 is connected to the center of the drive wheel 63. The other drive wheel 63 is equipped with an auxiliary shaft 65 on the inner wall of the housing 61. The auxiliary shaft 65 is connected to the center of the drive wheel 63. Each side of the breathable purification plate 21 is equipped with a sealing strip 26. The sealing strip 26 is attached to and sealed with the two side walls of the groove 17. The housing 61 passes through the first baffle 16 located on its side.

[0056] like Figures 8 to 10 As shown, the enhanced purification chamber 13 includes an upper chamber 3 and a lower chamber 4 that are slidably connected. The front end of the upper chamber 3 is provided with a first air inlet 31, and the front end of the lower chamber 4 is provided with a second air inlet 41. When the lower chamber 4 slides upward into the interior of the upper chamber 3, the first air inlet 31 and the second air inlet 41 are connected. The front end of the upper chamber 3 is provided with a fixing plate 32, and the bottom of the fixing plate 32 is provided with an air inlet groove 33. Seven second baffles 42 are staggered inside the lower chamber 4. The second baffles 42 make the gas flow inside the enhanced purification chamber 13 S-shaped. Mixed purification packing is laid between each second baffle 42. An auxiliary stirring component 5 is provided on the top wall of the upper chamber 3 corresponding to each second baffle 42.

[0057] like Figure 10 and Figure 11As shown, the auxiliary stirring assembly 5 includes a rotating rod 51 rotatably connected to the top wall of the upper bin body 3, a fan blade 52 arranged in the middle of the rotating rod 51, and a stirring rod 53 arranged at the bottom of the rotating rod 51. When the lower bin body 4 is slid upward into the interior of the upper bin body 3, the stirring rod 53 is located in the interior of the mixed purification filler. A compression plate 34 is arranged at the rear side of the air inlet groove 33. A protrusion 43 is arranged at the center of the bottom of the lower bin body 4. When the lower bin body 4 is slid upward into the interior of the upper bin body 3, the compression plate 34 is popped up to block the air inlet groove 33. When the lower bin body 4 is slid downward out of the interior of the upper bin body 3, the compression plate 34 is compressed by the protrusion 43 to make the air inlet groove 33 communicate with the space below the lower bin body 4. The fixed plate 32 is fixedly connected to the top plate 18 of the second purification bin 12. Three through holes 181 are arranged at the rear side of the top plate 18. The rear side of the lower bin body 4 is connected to the interior of the second purification bin 12 through four air guide pipes 44 penetrating through the top plate 18. The purification bin body 1 is provided with an electro-hydraulic push rod 7. The electro-hydraulic push rod 7 is a commercially available electro-hydraulic push rod, and a sealing shell is arranged outside the output end of the electro-hydraulic push rod 7. The output end of the electro-hydraulic push rod 7 penetrates through the rear of the purification bin body 1 and is connected to one side wall of the lower bin body 4, for driving the lower bin body 4 to move up and down. A detector 141 is arranged in the air inlet pipe 14.

[0058] The first purification filler is LiOH with a particle size of 1-2 mm, the second purification filler is a Cu-Mn-Ce composite oxide catalyst with a particle size of 1-2 mm, and the mixed purification filler is a mixture of the first purification filler and the second purification filler in a ratio of 1:1.

[0059] The preparation method of the Cu-Mn-Ce composite oxide catalyst is as follows: first, 1 part of Cu(NO3)2·2H2O and 1 part of Mn(NO3)2 are weighed according to weight parts, and 4 parts of deionized water is added to dissolve to obtain a mixed solution. Then, 1 part of CeO2 is immersed in the mixed solution and stirred thoroughly. The dried sample is calcined at 500°C for 3 hours to obtain the Cu-Mn-Ce composite oxide catalyst.

[0060] Example 2

[0061] The difference between this example and Example 1 is that:

[0062] The internal structures of the first purification bin 11 and the second purification bin 12 are the same, and each includes 11 first baffles 16 arranged alternately. The lower bin body 4 is internally provided with 9 second baffles 42 arranged alternately.

[0063] Description: Increasing the number of two kinds of baffles can prolong the gas residence time, but also speeds up the consumption of the purification filler. Reasonable selection can be made.

[0064] Example 3

[0065] The difference between this example and Example 1 is that:

[0066] The first purification filler is K2CO3 with a particle size of 0.2-1.5 mm;

[0067] The preparation method of the Cu-Mn-Ce composite oxide catalyst is as follows: first, 2 parts of Cu(NO3)2·2H2O and 1.5 parts of Mn(NO3)2 are weighed according to weight parts, and 8 parts of deionized water is added to dissolve to obtain a mixed solution, then 1.5 parts of CeO2 is immersed into the mixed solution and fully stirred, and the dried sample is calcined at 520 DEG C for 2.5 hours to obtain the Cu-Mn-Ce composite oxide catalyst.

[0068] Example 4

[0069] The difference between this embodiment and example 1 is that:

[0070] The first purification filler is K2CO3 with a particle size of 0.2-1.5 mm;

[0071] The preparation method of the Cu-Mn-Ce composite oxide catalyst is as follows: first, 2 parts of Cu(NO3)2·2H2O and 1.5 parts of Mn(NO3)2 are weighed according to weight parts, and 8 parts of deionized water is added to dissolve to obtain a mixed solution, then 1.5 parts of CeO2 is immersed into the mixed solution and fully stirred, and the dried sample is calcined at 520 DEG C for 2.5 hours to obtain the Cu-Mn-Ce composite oxide catalyst.

[0072] Description: The three first purification fillers given in the application are common CO2 purification fillers, and the use effect is similar, and the cost is reasonable, and the parameters in example 1, example 3 or example 4 can be selected to achieve similar technical effects.

[0073] Example 5

[0074] This embodiment is a method for chemically purifying and absorbing low-concentration double carbon, and is based on a device for chemically purifying and absorbing low-concentration double carbon according to example 1, which includes the following steps:

[0075] S1, detecting the gas to be treated: detecting the mixed gas to be treated, and dividing the corresponding purification mode category according to the detection result, if the mixed gas to be treated contains:

[0076] 5%<CO2 concentration<12%, and CO concentration<400ppm, which is a single CO2 purification mode;

[0077] CO2 concentration<5%, and 400ppm<CO concentration<3000ppm, which is a single CO purification mode;

[0078] 5% < CO2 concentration < 12% and 400 ppm < CO concentration < 3000 ppm, primary dual carbon purification mode;

[0079] 12% < CO2 concentration and 3000 ppm < CO concentration, enhanced dual carbon purification mode;

[0080] S2, gas purification:

[0081] S2-1, single CO2 purification mode: the first purification filler of the gas-permeable purification plate 21 of the first purification bin 11 and the second purification bin 12 faces upward, the lower bin body 4 is slid downward to move out of the inside of the upper bin body 3, the gas inlet groove 33 is opened, the mixed gas to be treated is injected into the inside of the first purification bin 11 through the gas inlet pipe 14, flows in an S shape through the first baffle 16 and is purified by the first purification filler, then the mixed gas directly flows through the bottom of the lower bin body 4 through the gas inlet groove 33 and enters the second purification bin 12, flows in an S shape through the first baffle 16 and is purified by the first purification filler again;

[0082] S2-2, single CO purification mode: the second purification filler of the gas-permeable purification plate 21 of the first purification bin 11 and the second purification bin 12 faces upward, the lower bin body 4 is slid downward to move out of the inside of the upper bin body 3, the gas inlet groove 33 is opened, the mixed gas to be treated is injected into the inside of the first purification bin 11 through the gas inlet pipe 14, flows in an S shape through the first baffle 16 and is purified by the second purification filler, then the mixed gas directly flows through the bottom of the lower bin body 4 through the gas inlet groove 33 and enters the second purification bin 12, flows in an S shape through the first baffle 16 and is purified by the second purification filler again;

[0083] S2-3, primary dual carbon purification mode: the gas-permeable purification plate 21 of the first purification bin 11 and the second purification bin 12 keeps rotating to make the first purification filler and the second purification filler alternately face upward, the lower bin body 4 is slid downward to move out of the inside of the upper bin body 3, the gas inlet groove 33 is opened, the mixed gas to be treated is injected into the inside of the first purification bin 11 through the gas inlet pipe 14, flows in an S shape through the first baffle 16 and is purified by the first purification filler and the second purification filler, then the mixed gas directly flows through the bottom of the lower bin body 4 through the gas inlet groove 33 and enters the second purification bin 12, flows in an S shape through the first baffle 16 and is purified by the first purification filler and the second purification filler again;

[0084] S2-4, strengthen double carbon purification mode: the air purification plate 21 of the first purification bin 11 and the second purification bin 12 keeps rotating to make the first purification filler and the second purification filler alternately face upward, the lower bin body 4 slides upward into the inside of the upper bin body 3, the gas inlet groove 33 closes the first gas inlet hole 31 and the second gas inlet hole 41 to be connected and communicated, the mixed gas to be treated is injected into the inside of the first purification bin 11 through the gas inlet pipe 14, flows in an S shape through the first baffle 16 and is purified through the first purification filler and the second purification filler, then the mixed gas enters the inside of the lower bin body 4, flows in an S shape through the second baffle 42 and is purified through the mixed purification filler, and then enters the second purification bin 12, flows in an S shape through the first baffle 16 and is purified through the first purification filler and the second purification filler again.

[0085] Working principle: The working principle of the device of the application will be further described below in combination with the method of the application.

[0086] In the single purification mode of S2-1 or S2-2, only the purification assembly 2 needs to be adjusted to the position, the driving motor 64 is started to drive the driving wheel 63 to rotate, thereby driving the chain belt 62 to rotate, and then driving each tooth ring 25 to rotate, so that the rotating shaft drives the air purification plate 21 to rotate to the required position with the specified side facing upward, and then the driving motor 64 is stopped, which can be controlled by an external PLC controller.

[0087] In the primary double carbon purification mode of S2-3, the purification assembly 2 needs to be continuously rotated, so the driving motor 64 does not stop rotating on the basis of the above, so that the first purification filler and the second purification filler alternately face upward.

[0088] In S2-1-S2-3, the gas flows out through the gas inlet groove 33 after passing through the first purification bin 11, at this time, since the lower bin body 4 is located below, the convex block 43 presses the compression plate 34 to make the compression plate 34 open, and the gas enters below the lower bin body 4 and is directly discharged into the inside of the second purification bin 12 through the through hole 181;

[0089] In S2-4, the lower bin body 4 moves upward under the control of the electro-hydraulic push rod 7, the convex block 43 no longer presses the compression plate 34 to make the compression plate 34 rebound, so as to keep the closure of the gas inlet groove 33, so the gas can enter the inside of the lower bin body 4 through the first gas inlet hole 31 and the second gas inlet hole 41, and then in the flow process in the lower bin body 4, the airflow drives the fan blade 52 to rotate, thereby making the rotating rod 51 rotate, and then making the stirring rod 53 stir the mixed purification filler, so as to improve the purification and absorption effect.

[0090] Experimental example

[0091] We test the absorption effect of each purification mode on double carbon gas at room temperature, the gas flow is uniform at 1L / min, the test time is 1h, and the results are shown in Table 1.

[0092] Table 1 absorption effect of each purification mode

[0093]

[0094] From the data in Table 1, it can be seen that each purification mode can significantly reduce the content of double carbon, especially in the reinforced double carbon purification mode, the addition of mixed purification filler makes the purification of double carbon gas more significant effect, at the same time, under the premise of maintaining high purification rate, the switching of multiple modes also greatly increases the service life of consumable purification filler, avoids the long-term contact of unused purification filler with external gas and gets wet, greatly prolongs the overall service life, and also reduces the maintenance frequency.

Claims

1. A device for chemically purifying an absorption of low-concentration di-carbon, characterized by, The utility model relates to a purification device, including the purification bin (1), the first purification bin (11) of upper portion in the purification bin (1), the second purification bin (12) of lower portion in the purification bin (1) and the reinforcement purification bin (13) in the middle in the purification bin (1), the first purification bin (11) top rear side is equipped with the air inlet pipe (14), and the second purification bin (12) front side wall is equipped with the air outlet pipe (15); The first purification bin (11) and the second purification bin (12) internal structure are same, and all include a plurality of first baffles (16) of staggered arrangement, the purification assembly (2) between each first baffle (16), the purification assembly (2) includes a rotatable air-permeable purification plate (21), the air-permeable purification plate (21) is double-layered, and the air-permeable purification plate (21) is equipped with first purification filler in upper layer, and the air-permeable purification plate (21) is equipped with second purification filler in lower layer, and the air-permeable purification plate (21) on each purification assembly (2) rotates synchronously; The reinforcement purification bin (13) includes the upper bin (3) and the lower bin (4) of sliding connection, the upper bin (3) front end is equipped with first air inlet hole (31), and the lower bin (4) front end is equipped with second air inlet hole (41), when the lower bin (4) is slid upward and enters the inside of the upper bin (3), the first air inlet hole (31) and the second air inlet hole (41) are connected and communicated, and the upper bin (3) front end is equipped with fixed plate (32), the fixed plate (32) bottom is equipped with air inlet groove (33), the lower bin (4) is staggered and equipped with a plurality of second baffles (42) inside, and mixed purification filler is laid between each second baffle (42), and the auxiliary stirring assembly (5) is arranged on the top wall of the upper bin (3) corresponding to each second baffle (42) between the second baffle (42); The first baffle (16) makes the gas flow in the first purification bin (11) and the second purification bin (12) S-shaped, and the second baffle (42) makes the gas flow in the reinforcement purification bin (13) S-shaped; The air-permeable purification plate (21) on each purification assembly (2) keeps the first purification filler upward or the second purification filler upward when rotating to the horizontal state, the air-permeable purification plate (21) is equipped with the baffle (22) for separating the first purification filler and the second purification filler in the middle, the air-permeable purification plate (21) is equipped with the air-permeable membrane (23) on both sides, and the first purification filler and the second purification filler are filled in the air-permeable membrane (23). The air-permeable purification plate (21) is located in the groove (17) provided at the bottom of the first purification bin (11) and the second purification bin (12), one end of the air-permeable purification plate (21) is provided with a rotating shaft (24), the rotating shaft (24) is rotatably connected with the inner wall at the top of the groove (17), a gear ring (25) is arranged at the middle of the rotating shaft (24), the upper surface of the gear ring (25) is higher than the groove (17), all the gear rings (25) in the first purification bin (11) or the second purification bin (12) are driven to rotate synchronously by one driving assembly (6), the driving assembly (6) comprises a housing (61) fixed on the bottom of the first purification bin (11) or the second purification bin (12), a chain belt (62) is arranged in the housing (61), the chain belt (62) surrounds an annular, the bottom of the chain belt (62) is connected with the gear ring (25) in a meshing mode, and one driving wheel (63) is connected with each end of the chain belt (62) in a meshing mode, a driving motor (64) is arranged on the inner wall of the housing (61) corresponding to one of the driving wheels (63), the output shaft of the driving motor (64) is connected with the center of the driving wheel (63), an auxiliary shaft (65) is arranged on the inner wall of the housing (61) corresponding to the other driving wheel (63), and the auxiliary shaft (65) is connected with the center of the driving wheel (63), one sealing strip (26) is arranged at each side of the air-permeable purification plate (21), the sealing strip (26) is attached to and sealed with the two side walls of the groove (17), and the housing (61) penetrates through the first baffle (16) located at the side thereof; A compression plate (34) is arranged at the rear side of the air inlet groove (33), a protrusion (43) is arranged at the bottom center of the lower bin body (4), when the lower bin body (4) is slid upward into the inside of the upper bin body (3), the compression plate (34) is popped up to block the air inlet groove (33), when the lower bin body (4) is slid downward to move out of the inside of the upper bin body (3), the compression plate (34) is compressed by the protrusion (43) to make the air inlet groove (33) communicate with the space below the lower bin body (4), the fixed plate (32) is fixedly connected with the top plate (18) of the second purification bin (12), a plurality of through holes (181) are arranged at the rear side of the top plate (18), and the rear side of the lower bin body (4) is connected with the inside of the second purification bin (12) through a plurality of air guide pipes (44) penetrating through the top plate (18).

2. The device for purifying and absorbing low-concentration double carbon by chemical method according to claim 1, characterized in that, The auxiliary stirring assembly (5) comprises a rotating rod (51) rotatably connected with the top wall of the upper bin body (3), a fan blade (52) is arranged at the middle of the rotating rod (51), and a stirring rod (53) is arranged at the bottom of the rotating rod (51), when the lower bin body (4) is slid upward into the inside of the upper bin body (3), the stirring rod (53) is located in the mixed purification filler.

3. The device for purifying and absorbing low-concentration double carbon by chemical method according to claim 1, characterized in that, One side of the purification bin body (1) is provided with an electro-hydraulic push rod (7), the output end of the electro-hydraulic push rod (7) penetrates through the rear of the purification bin body (1) and is connected with one side wall of the lower bin body (4), which is used to drive the lower bin body (4) to move up and down, and a detector (141) is arranged in the air inlet pipe (14).

4. The device for purifying and absorbing low-concentration double carbon by chemical method according to claim 1, characterized in that, The first purification filler is one of LiOH, KOH or K2CO3 with a particle size less than 2 mm, the second purification filler is a Cu-Mn-Ce composite oxide catalyst with a particle size less than 2 mm, and the mixed purification filler is a mixture of the first purification filler and the second purification filler in a ratio of 1:1; The preparation method of the Cu-Mn-Ce composite oxide catalyst is as follows: first, 1-2 parts of Cu(NO3)2·2H2O and 1-2 parts of Mn(NO3)2 are weighed by weight, and 4-8 parts of deionized water is added to dissolve to obtain a mixed solution, then 1-2 parts of CeO2 is immersed in the mixed solution and stirred thoroughly, and the dried sample is calcined at 500-550°C for 2-3 hours to obtain the Cu-Mn-Ce composite oxide catalyst.

5. A method for chemically purifying and absorbing low-concentration double carbon based on the equipment for chemically purifying and absorbing low-concentration double carbon according to any one of claims 1 to 4, characterized in that, The method comprises the following steps: S1, detecting the gas to be treated: detecting the mixed gas to be treated, and dividing the corresponding purification mode category according to the detection result, if the mixed gas to be treated has: 5% < CO2 concentration < 12%, and CO concentration < 400 ppm, it is a single CO2 purification mode; CO2 concentration < 5%, and 400 ppm < CO concentration < 3000 ppm, it is a single CO purification mode; 5% < CO2 concentration < 12%, and 400 ppm < CO concentration < 3000 ppm, it is a primary double carbon purification mode; 12% < CO2 concentration, and 3000 ppm < CO concentration, it is an intensified double carbon purification mode; S2, gas purification: S2-1, single CO2 purification mode: the first purification filler of the gas-permeable purification plate (21) of the first purification bin (11) and the second purification bin (12) faces upwards, the lower bin body (4) is slid downwards to move out of the inside of the upper bin body (3), the gas inlet groove (33) is opened, the mixed gas to be treated is injected into the inside of the first purification bin (11) through the gas inlet pipe (14), flows in an S shape through the first baffle (16) and is purified by the first purification filler, then the mixed gas directly flows through the bottom of the lower bin body (4) through the gas inlet groove (33) and enters the second purification bin (12), flows in an S shape through the first baffle (16) and is purified again by the first purification filler; S2-2, single CO purification mode: the second purification filler of the gas-permeable purification plate (21) of the first purification bin (11) and the second purification bin (12) faces upwards, the lower bin body (4) is slid downwards to move out of the inside of the upper bin body (3), the gas inlet groove (33) is opened, the mixed gas to be treated is injected into the inside of the first purification bin (11) through the gas inlet pipe (14), flows in an S shape through the first baffle (16) and is purified by the second purification filler, then the mixed gas directly flows through the bottom of the lower bin body (4) through the gas inlet groove (33) and enters the second purification bin (12), flows in an S shape through the first baffle (16) and is purified again by the second purification filler; S2-3, primary double carbon purification mode: the air-permeable purification plates (21) of the first purification bin (11) and the second purification bin (12) keep rotating continuously to make the first purification filler and the second purification filler alternately face upward, the lower bin body (4) slides out of the inside of the upper bin body (3), the air inlet groove (33) is opened, the mixed gas to be treated is injected into the inside of the first purification bin (11) through the air inlet pipe (14), flows in an S shape through the first baffle (16) and is purified by the first purification filler and the second purification filler, then the mixed gas flows through the bottom of the lower bin body (4) through the air inlet groove (33) and enters the second purification bin (12), flows in an S shape through the first baffle (16) and is purified again by the first purification filler and the second purification filler; S2-4, enhanced double carbon purification mode: the air-permeable purification plates (21) of the first purification bin (11) and the second purification bin (12) keep rotating continuously to make the first purification filler and the second purification filler alternately face upward, the lower bin body (4) slides into the inside of the upper bin body (3), the air inlet groove (33) closes the first air inlet hole (31) and the second air inlet hole (41) to be connected and communicated, the mixed gas to be treated is injected into the inside of the first purification bin (11) through the air inlet pipe (14), flows in an S shape through the first baffle (16) and is purified by the first purification filler and the second purification filler, then the mixed gas enters the inside of the lower bin body (4), flows in an S shape through the second baffle (42) and is purified by the mixed purification filler, then enters the second purification bin (12), flows in an S shape through the first baffle (16) and is purified again by the first purification filler and the second purification filler.

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