Equipment and method for chemically purifying and absorbing low-concentration dual carbon

Abstract

The invention discloses equipment and a method for chemically purifying and absorbing low-concentration dual carbon. The equipment comprises a purifying bin body, a first purifying bin located at the upper part in the purifying bin body, a second purifying bin located at the lower part in the purifying bin body, and a reinforced purifying bin located at the middle part in the purifying bin body, the method comprises the following steps: S1, detecting to-be-treated gas; s2, gas purification: S2-1, a single CO2 purification mode; s2-2, a single CO purification mode is adopted; s2-3, a primary dual-carbon purification mode is adopted; and S2-4, an enhanced dual-carbon purification mode. On the basis of the two different purification bins, the rotatable purification assembly is carried in one purification bin, the two purification fillers can be alternately used, so that the humidity of the purification fillers is greatly avoided, the service life is prolonged, and the mixed purification filler is filled in the reinforced purification bin, so that the dual-carbon gas can be further deeply purified; therefore, the overall purification and absorption effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of low-carbon environmental protection, and in particular to a device and method for chemically purifying and absorbing low-concentration dual-carbon. Background Art

[0002] Dual carbon refers to carbon monoxide (CO) and carbon dioxide (CO2), both of which are very common gases and are often treated as waste gas in industrial production. If high concentrations of dual carbon gas are emitted, it will cause serious pollution, so high concentrations of dual carbon gas are generally captured. For low concentrations of dual carbon gas, if not properly handled, it will also cause harm. For example, in some closed workplaces, the gradually increasing concentration of dual carbon gas can cause poisoning of workers.

[0003] At present, low-concentration dual-carbon gases are in the research stage. Generally, only one of the gases needs to be purified and absorbed in most cases, and there is a lack of equipment that can purify and absorb both gases at the same time. For example, the utility model patent with patent publication number CN217367902U discloses a purifier with a particle pollutant filter membrane, which belongs to the field of air filtration technology, including a first filter layer, which is a cotton gauze filter layer for filtering PM10 particles; the second filter layer is a hard non-woven filter layer for filtering PM2.5 particles. The utility model can efficiently filter PM2.5-PM10 and other particulate pollutants in the air through two filter layers, and the materials of the two filter layers are easy to obtain and can be obtained by collecting old clothes. While saving resources, it relieves the pressure of nature on degrading polymer fibers, embodies the concept of green environmental protection, and responds to the concept of dual-carbon emission reduction. The utility model purifier realizes the filtration of particulate pollutants through the filter membrane, and uses a heating element to adjust the temperature in the shell, so that the formaldehyde catalyst works efficiently, and cooperates with the unpowered wind ball to promote air circulation, which greatly improves the air purification effect.

[0004] However, this type of device has many disadvantages. When it is used for 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 of the invention

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

[0006] The technical solution of the present invention is:

[0007] A device for chemical purification and absorption of low-concentration dual carbon, comprising a purification chamber, a first purification chamber located at the upper part of the purification chamber, a second purification chamber located at the lower part of the purification chamber, and a reinforced purification chamber located in the middle part of the purification chamber, wherein an air inlet pipe is provided at the rear side of the top of the first purification chamber, and an air outlet pipe is provided at the front side wall of the second purification chamber;

[0008] The first purification chamber and the second purification chamber have the same internal structure, both comprising a plurality of staggered first baffles, a purification assembly located between the first baffles, the purification assembly comprising a rotatable air-permeable purification plate, the air-permeable purification plate being a double-layer arrangement, the upper layer of the air-permeable purification plate being provided with a first purification filler, the lower layer of the air-permeable purification plate being provided with a second purification filler, and the air-permeable purification plates on the various purification assemblies rotate synchronously;

[0009] The enhanced purification chamber includes an upper chamber body and a lower chamber body that are slidably connected, a first air inlet hole is provided at the front end of the upper chamber body, and a second air inlet hole is provided at the front end of the lower chamber body. When the lower chamber body slides upward into the interior of the upper chamber body, the first air inlet hole and the second air inlet hole are connected to each other, a fixed plate is provided at the front end of the upper chamber body, an air inlet groove is provided at the bottom of the fixed plate, a plurality of second deflection baffles are staggered inside the lower chamber body, a mixed purification filler is laid between each of the second deflection baffles, and an auxiliary stirring assembly is provided on the top wall of the upper chamber body corresponding to the second deflection baffles.

[0010] Furthermore, the first deflection baffle makes the gas flow inside the first purification chamber and the second purification chamber into an S-shape, and the second deflection baffle makes the gas flow inside the enhanced purification chamber into an S-shape.

[0011] Description: By changing the direction of the gas, the contact time with the purification components is prolonged, thus improving the purification effect.

[0012] Furthermore, the breathable purification plates on each of the purification components are kept with the first purification filler facing upward or the second purification filler facing upward when rotated to a horizontal state, a partition for separating the first purification filler from the second purification filler is provided in the middle of the breathable purification plate, and breathable membranes are provided on both the upper and lower sides of the breathable purification plate, and the first purification filler and the second purification filler are filled inside the two breathable membranes respectively.

[0013] Description: Two different purification fillers can be selectively contacted with the gas, reducing the exposure time of unnecessary purification fillers and preventing moisture from reducing the purification effect.

[0014] Furthermore, the air-permeable purification plate is located in a groove provided on the bottom surfaces of the first purification bin and the second purification bin, a rotating shaft is provided at one end of the air-permeable purification plate, the rotating shaft is rotatably connected to the inner wall at the top of the groove, a gear ring is provided in the middle of the rotating shaft, the upper surface of the gear ring is higher than the groove, all the gear rings corresponding to the first purification bin or the second purification bin are driven to rotate synchronously by a driving assembly, the driving assembly includes a shell fixed on the bottom surface of the first purification bin or the second purification bin, a chain belt is provided inside the shell, the chain belt is surrounded by a ring and the bottom of the chain belt is meshed with the gear ring, and a driving wheel is meshed at each end of the chain belt, a driving motor is provided on the inner wall of the shell corresponding to one of the driving wheels, and the output shaft of the driving motor is connected to the center of the driving wheel, an auxiliary shaft is provided on the inner wall of the shell corresponding to the other driving wheel, and the auxiliary shaft is connected to the center of the driving wheel, a sealing strip is provided on each side of the air-permeable purification plate, the sealing strip is attached to and sealed with the two side walls of the groove, and the shell passes through the first deflection baffle located on its side.

[0015] Note: The synchronous control of all purification components can be achieved through the setting of the drive components.

[0016] Furthermore, a compression plate is provided on the rear side of the air inlet groove, and a protrusion is provided at the center of the bottom of the lower warehouse body. When the lower warehouse body slides upward into the interior of the upper warehouse body, the compression plate pops up to cover the air inlet groove. When the lower warehouse body slides downward and moves out of the interior of the upper warehouse body, the compression plate is compressed by the protrusion to connect the air inlet groove with the space below the lower warehouse body. The fixed plate is fixedly connected to the top plate of the second purification warehouse, and a plurality of through holes are provided on the rear side of the top plate. The rear side of the lower warehouse body is connected to the interior of the second purification warehouse through a plurality of air ducts passing through the top plate.

[0017] Note: Through the cooperation of the bump and the compression plate, the gas can enter into different channels as needed.

[0018] Furthermore, the auxiliary stirring assembly includes a rotating rod rotatably connected to the top wall of the upper warehouse body, a fan blade is provided in the middle of the rotating rod, and a stirring rod is provided at the bottom of the rotating rod. When the lower warehouse body slides upward into the interior of the upper warehouse body, the stirring rod is located inside the mixing and purification filler.

[0019] Description: By setting up the auxiliary stirring component, the wind force of the gas during the flow process is utilized to improve the stirring effect of the mixed purification filler and improve the purification effect.

[0020] Furthermore, an electro-hydraulic push rod is provided on one side of the purification bin body, and the output end of the electro-hydraulic push rod passes through the purification bin body and is connected to a side wall of the lower bin body for driving the lower bin body to move up and down, and a detector is provided inside the air inlet pipe.

[0021] Description: The lower bin body is driven by the setting of the electro-hydraulic push rod.

[0022] Further, the first purification filler is one of LiOH, KOH or K2CO3 with a particle size of less than 2 mm, the second purification filler is a Cu-Mn-Ce composite oxide catalyst with a particle size of 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;

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

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

[0025] The present invention also discloses a method for chemical purification and absorption of low-concentration dual carbon. Based on the above-mentioned device for chemical purification and absorption of low-concentration dual carbon, the method comprises the following steps:

[0026] S1. Detection of the gas to be processed: Detect the mixed gas to be processed and classify the corresponding purification mode according to the detection results. If the mixed gas to be processed contains:

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

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

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

[0030] 12%<CO2 concentration, and 3000ppm<CO concentration, which is the enhanced dual-carbon purification mode;

[0031] S2. Gas purification:

[0032] S2-1, single CO2 purification mode: the first purification fillers of the air-permeable purification plates of the first purification chamber and the second purification chamber face upward, the lower chamber slides downward and moves out of the upper chamber, the air inlet slot is opened, and the mixed gas to be treated is injected into the first purification chamber through the air inlet pipe, flows in an S shape through the first baffle plate and is purified by the first purification filler, and then the mixed gas directly flows through the bottom of the lower chamber through the air inlet slot and enters the second purification chamber, flows in an S shape through the first baffle plate and is purified again by the first purification filler;

[0033] S2-2, single CO purification mode: the second purification fillers of the air-permeable purification plates of the first purification chamber and the second purification chamber face upward, the lower chamber slides downward and moves out of the upper chamber, the air inlet slot is opened, and the mixed gas to be treated is injected into the first purification chamber through the air inlet pipe, flows in an S shape through the first baffle plate and is purified by the second purification filler, and then the mixed gas directly flows through the bottom of the lower chamber through the air inlet slot and enters the second purification chamber, flows in an S shape through the first baffle plate and is purified again by the second purification filler;

[0034] S2-3, primary dual-carbon purification mode: the air-permeable purification plates of the first purification chamber and the second purification chamber keep rotating so that the first purification filler and the second purification filler face upward alternately, the lower chamber slides downward and moves out of the upper chamber, the air inlet slot is opened, and the mixed gas to be treated is injected into the first purification chamber through the air inlet pipe, flows in an S shape through the first baffle plate and is purified by the first purification filler and the second purification filler, and then the mixed gas directly flows through the bottom of the lower chamber through the air inlet slot and enters the second purification chamber, flows in an S shape through the first baffle plate and is purified by the first purification filler and the second purification filler again;

[0035] S2-4, enhanced dual-carbon purification mode: the air-permeable purification plates of the first purification chamber and the second purification chamber keep rotating so that the first purification filler and the second purification filler face upward alternately, the lower chamber slides upward into the upper chamber, the air inlet groove closes the first air inlet hole and the second air inlet hole is connected, the mixed gas to be treated is injected into the first purification chamber through the air inlet pipe, flows in an S shape through the first deflection baffle and is purified by the first purification filler and the second purification filler, then the mixed gas enters the lower chamber, flows in an S shape through the second deflection baffle and is enhanced purified by the mixed purification filler, then enters the second purification chamber, flows in an S shape through the first deflection baffle and is purified again by the first purification filler and the second purification filler.

[0036] The beneficial effects of the present invention are:

[0037] (1) The present invention provides a device capable of synchronously purifying and absorbing low-concentration dual-carbon and a corresponding complete method, wherein the device is based on two different purification chambers, one of which is equipped with a rotatable purification component, and the two purification fillers can be used alternately to greatly avoid moisture in the purification fillers and extend the service life. The interior of the enhanced purification chamber is filled with mixed purification fillers, which can further deeply purify the dual-carbon gas, thereby improving the overall purification and absorption effect.

[0038] (2) The method of chemical purification and absorption of low-concentration dual-carbon of the present invention provides four different working modes according to the different concentration contents of dual-carbon gas, which is highly targeted and can achieve dual-carbon gas purification with the lowest energy consumption and material consumption.

[0039] (3) The present invention can be applied to the exhaust gas treatment in waste gas production sites, or the indoor air purification in closed workplaces, such as workshops, laboratories, submarines, space stations, etc. It can quickly treat low-concentration dual-carbon gases and has good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of a device for chemical purification and absorption of low-concentration dual carbon of the present invention;

[0041] Figure 2 It is a schematic diagram of the internal structure of a device for chemical purification and absorption of low-concentration dual carbon of the present invention;

[0042] Figure 3 This is a front view of the internal structure of a device for chemical purification and absorption of low-concentration dual carbon of the present invention;

[0043] Figure 4 It is a top view of the first purification chamber of a device for chemical purification and absorption of low-concentration dual carbon of the present invention;

[0044] Figure 5 It is a schematic diagram of the purification component structure of a device for chemical purification and absorption of low-concentration dual carbon of the present invention;

[0045] Figure 6 It is a cross-sectional view of a purification component of a device for chemical purification and absorption of low-concentration dual carbon of the present invention;

[0046] Figure 7 It is a schematic diagram of the internal structure of a driving component of a device for chemical purification and absorption of low-concentration dual carbon of the present invention;

[0047] Figure 8 It is a left view of the internal structure of a device for chemical purification and absorption of low-concentration double carbon of the present invention after omitting the fixing plate;

[0048] Fig. 9It is a schematic diagram of the bottom structure of the right rear side of the interior of a device for chemical purification and absorption of low-concentration dual carbon of the present invention;

[0049] Fig.10 It is a top view of the internal structure of the lower bin of a device for chemical purification and absorption of low-concentration dual carbon of the present invention and a schematic diagram of the position of the auxiliary stirring component;

[0050] Fig.11 The present invention is a schematic diagram of the structure of an auxiliary stirring component of a device for chemically purifying and absorbing low-concentration dual carbon.

[0051] Among them, 1-purification chamber body, 11-first purification chamber, 12-second purification chamber, 13-enhanced purification chamber, 14-inlet pipe, 141-detector, 15-outlet pipe, 16-first baffle, 17-groove, 18-top plate, 181-through hole, 2-purification component, 21-breathable purification plate, 22-partition, 23-breathable membrane, 24-rotating shaft, 25-tooth ring, 26-sealing strip, 3-upper chamber body, 31 -first air inlet hole, 32-fixed plate, 33-air inlet groove, 34-compression plate, 4-lower chamber, 41-second air inlet hole, 42-second deflector baffle, 43-bump, 44-air guide tube, 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] like Figure 1 and Figure 2 As shown, a device for chemical purification and absorption of low-concentration dual carbon includes a purification chamber 1, a first purification chamber 11 located at the upper part of the purification chamber 1, a second purification chamber 12 located at the lower part of the purification chamber 1, and a reinforced purification chamber 13 located in the middle part of the purification chamber 1, an air inlet pipe 14 is provided at the rear side of the top of the first purification chamber 11, and an air outlet pipe 15 is provided on the front side wall of the second purification chamber 12;

[0054] like Figure 2 to Figure 6 As shown, the first purification chamber 11 and the second purification chamber 12 have the same internal structure, both of which include 9 staggered first baffle plates 16, the first baffle plates 16 make the internal gas flow of the first purification chamber 11 and the second purification chamber 12 S-shaped, and the purification assembly 2 located between each first baffle plate 16, the purification assembly 2 includes a rotatable air-permeable purification plate 21, the air-permeable purification plate 21 is a double-layer arrangement, the upper layer of the air-permeable purification plate 21 is provided with a first purification filler, the lower layer of the air-permeable purification plate 21 is provided with a second purification filler, and the air-permeable purification plates 21 on each purification assembly 2 rotate synchronously;

[0055] like Figures 4 to 7 As shown, the air-permeable purification plates 21 on each purification component 2 keep the first purification filler facing upward or the second purification filler facing upward when rotating to a horizontal state, a partition 22 for separating the first purification filler and the second purification filler is provided in the middle of the air-permeable purification plate 21, air-permeable membranes 23 are provided on the upper and lower sides of the air-permeable purification plate 21, and the first purification filler and the second purification filler are filled inside the two air-permeable membranes 23 respectively, and the air-permeable purification plate 21 is located in a groove 17 provided on the bottom surface of the first purification bin 11 and the second purification bin 12, and a rotating shaft 24 is provided at one end of the air-permeable purification plate 21, and the rotating shaft 24 is rotatably connected to the inner wall of the top of the groove 17, and a gear ring 25 is provided in the middle of the rotating shaft 24, and the upper surface of the gear ring 25 is higher than the groove 17, and all the gear rings 25 corresponding to the first purification bin 11 or the second purification bin 12 are driven to rotate synchronously by a driving component 6, The driving assembly 6 includes a shell 61 fixed on the bottom surface of the first purification bin 11 or the second purification bin 12, a chain belt 62 is provided inside the shell 61, the chain belt 62 is surrounded by a ring and the bottom of the chain belt 62 is meshed and connected with the gear ring 25, and a driving wheel 63 is meshed and connected at each end of the chain belt 62, a driving motor 64 is provided on the inner wall of the shell 61 corresponding to one of the driving wheels 63, and the driving motor 64 is a commercially available gear reduction motor, and the output shaft of the driving motor 64 is connected to the center of the driving wheel 63, and an auxiliary shaft 65 is provided on the inner wall of the shell 61 corresponding to the other driving wheel 63, and the auxiliary shaft 65 is connected to the center of the driving wheel 63, and a sealing strip 26 is provided on each side of the air permeable purification plate 21, and the sealing strip 26 is attached to and sealed with the two side walls of the groove 17, and the shell 61 passes through the first deflection baffle 16 located on the side thereof;

[0056] like Figure 8 to Figure 10 As shown, the enhanced purification bin 13 includes an upper bin body 3 and a lower bin body 4 that are slidably connected, a first air inlet hole 31 is provided at the front end of the upper bin body 3, and a second air inlet hole 41 is provided at the front end of the lower bin body 4. When the lower bin body 4 slides upward into the interior of the upper bin body 3, the first air inlet hole 31 and the second air inlet hole 41 are connected to each other, a fixing plate 32 is provided at the front end of the upper bin body 3, and an air inlet groove 33 is provided at the bottom of the fixing plate 32. Seven second baffle plates 42 are staggered inside the lower bin body 4. The second baffle plates 42 make the internal gas flow of the enhanced purification bin 13 S-shaped, a mixed purification filler is laid between each second baffle plate 42, and an auxiliary stirring assembly 5 is provided on the top wall of the upper bin body 3 corresponding to each second baffle plate 42;

[0057] like Fig.10 and Fig.11As shown, the auxiliary stirring assembly 5 includes a rotating rod 51 rotatably connected to the top wall of the upper warehouse body 3, a fan blade 52 is provided in the middle of the rotating rod 51, and a stirring rod 53 is provided at the bottom of the rotating rod 51. When the lower warehouse body 4 slides upward into the interior of the upper warehouse body 3, the stirring rod 53 is located inside the mixing and purifying filler, a compression plate 34 is provided on the rear side of the air inlet groove 33, and a convex block 43 is provided at the center of the bottom of the lower warehouse body 4. When the lower warehouse body 4 slides upward into the interior of the upper warehouse body 3, the compression plate 34 pops up to block the air inlet groove 33. When the lower warehouse body 4 slides downward to move out of the interior of the upper warehouse body 3, the compression plate 34 is compressed by the convex block 43 to The air inlet groove 33 is communicated 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 provided on the rear side of the top plate 18, and 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 that penetrate the top plate 18. An electro-hydraulic push rod 7 is provided on one side of the purification bin body 1. The electro-hydraulic push rod 7 is a commercially available electro-hydraulic push rod and a sealed shell is provided on the outside of the output end. The output end of the electro-hydraulic push rod 7 penetrates the purification bin body 1 and is connected to a side wall of the lower bin body 4, which is used to drive the lower bin body 4 to move up and down. A detector 141 is provided inside the air inlet pipe 14;

[0058] The first purification filler is LiOH with a particle size of 1 to 2 mm, the second purification filler is a Cu-Mn-Ce composite oxide catalyst with a particle size of 1 to 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, weigh 1 part of Cu(NO3)2·2H2O and 1 part of Mn(NO3)2 by weight, add 4 parts of deionized water to dissolve and obtain a mixed solution, then weigh 1 part of CeO2 and immerse it in the mixed solution and stir it thoroughly, and the dried sample is calcined at 500°C for 3 hours to obtain a Cu-Mn-Ce composite oxide catalyst.

[0060] Example 2

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

[0062] The first purification chamber 11 and the second purification chamber 12 have the same internal structure, both including 11 staggered first deflection baffles 16 , and 9 second deflection baffles 42 are staggered inside the lower chamber body 4 .

[0063] Note: Increasing the number of the two types of baffles can extend the gas residence time, but it also speeds up the consumption of the purification filler, so you can choose them reasonably.

[0064] Example 3

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

[0066] The first purification filler is KOH with a particle size of 0.5 to 1 mm;

[0067] The preparation method of the Cu-Mn-Ce composite oxide catalyst is as follows: first, weigh 2 parts of Cu(NO3)2·2H2O and 1.5 parts of Mn(NO3)2 by weight, add 8 parts of deionized water to dissolve and obtain a mixed solution, then weigh 1.5 parts of CeO2, immerse it in the mixed solution and stir it thoroughly, and the dried sample is calcined at 520°C for 2.5 hours to obtain a Cu-Mn-Ce composite oxide catalyst.

[0068] Example 4

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

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

[0071] The preparation method of the Cu-Mn-Ce composite oxide catalyst is as follows: first, weigh 1 part of Cu(NO3)2·2H2O and 1.6 parts of Mn(NO3)2 by weight, add 6 parts of deionized water to dissolve and obtain a mixed solution, then weigh 2 parts of CeO2, immerse it in the mixed solution and stir it thoroughly, and the dried sample is calcined at 550°C for 2 hours to obtain a Cu-Mn-Ce composite oxide catalyst.

[0072] Note: The three first purification fillers given in the present invention are all commonly used CO2 purification fillers, and their use effects are similar. You can choose them reasonably based on the cost. When adjusting the parameters of the preparation method of the Cu-Mn-Ce composite oxide catalyst, selecting the parameters in Example 1, Example 3 or Example 4 can achieve similar technical effects.

[0073] Example 5

[0074] This embodiment is a method for chemical purification and absorption of low-concentration dual carbon, and a device for chemical purification and absorption of low-concentration dual carbon based on Embodiment 1 includes the following steps:

[0075] S1. Detection of the gas to be processed: Detect the mixed gas to be processed and classify the corresponding purification mode according to the detection results. If the mixed gas to be processed contains:

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

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

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

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

[0080] S2. Gas purification:

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

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

[0083] S2-3, primary dual-carbon purification mode: the air-permeable purification plates 21 of the first purification chamber 11 and the second purification chamber 12 keep rotating so that the first purification filler and the second purification filler face upward alternately, the lower chamber body 4 slides downward and moves out of the upper chamber body 3, the air inlet slot 33 is opened, and the mixed gas to be treated is injected into the first purification chamber 11 through the air inlet pipe 14, flows in an S shape through the first baffle plate 16 and is purified by the first purification filler and the second purification filler, and then the mixed gas directly flows through the bottom of the lower chamber body 4 through the air inlet slot 33 and enters the second purification chamber 12, flows in an S shape through the first baffle plate 16 and is purified by the first purification filler and the second purification filler again;

[0084] S2-4, enhanced dual-carbon purification mode: the air-permeable purification plates 21 of the first purification chamber 11 and the second purification chamber 12 keep rotating so that the first purification filler and the second purification filler face upward alternately, the lower chamber body 4 slides upward into the upper chamber body 3, the air inlet groove 33 closes the first air inlet hole 31 and the second air inlet hole 41 is connected to each other, and the mixed gas to be treated is injected into the first purification chamber 11 through the air inlet pipe 14, flows in an S shape through the first deflection baffle 16 and is purified by the first purification filler and the second purification filler, and then the mixed gas enters the lower chamber body 4, flows in an S shape through the second deflection baffle 42 and is enhanced purified by the mixed purification filler, and then enters the second purification chamber 12, flows in an S shape through the first deflection baffle 16 and is purified again by the first purification filler and the second purification filler.

[0085] Working principle: Below we further explain the working principle of the device of the present invention in combination with the method of the present invention.

[0086] In the single purification mode of S2-1 or S2-2, it is only necessary to adjust the purification component 2 into place, turn on the drive motor 64 to drive the drive wheel 63 to rotate, thereby driving the chain belt 62 to rotate, and then driving each gear ring 25 to rotate, so that the shaft drives the air-permeable purification plate 21 to rotate to the required position, with the specified side facing up, and then stop the drive motor 64. Here we can control it through an external PLC controller;

[0087] In S2-3, primary dual-carbon purification mode, the purification component 2 needs to rotate continuously. Therefore, on the basis of the above, the driving motor 64 does not stop rotating, so that the first purification filler and the second purification filler can be alternately facing upward;

[0088] In S2-1 to S2-3, the gas flows out through the air inlet groove 33 after passing through the first purification chamber 11. At this time, since the lower chamber body 4 is located at the bottom, the protrusion 43 presses down the compression plate 34 to open the compression plate 34. After the gas enters the bottom of the lower chamber body 4, it is directly discharged into the second purification chamber 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, and the protrusion 43 no longer presses down the compression plate 34, causing the compression plate 34 to rebound, thereby keeping the air inlet groove 33 closed. Therefore, the gas can enter the lower bin body 4 through the first air inlet hole 31 and the second air inlet hole 41. Subsequently, during the flow inside the lower bin body 4, the airflow drives the fan blades 52 to rotate, thereby rotating the rotating rod 51, and then causing the stirring rod 53 to stir and mix the purification filler, thereby improving the purification and absorption effect.

[0090] Experimental example

[0091] We tested the absorption effect of each purification mode on dual-carbon gas at room temperature. The gas flow rate was unified at 1L / min and the test time was 1h. The results are shown in Table 1.

[0092] Table 1 Absorption effect of each purification mode

[0093]

[0094] It can be seen from the data in Table 1 that each purification mode can significantly reduce the content of dual carbon, especially in the enhanced dual carbon purification mode. The addition of mixed purification filler makes the purification of dual carbon gas more effective. At the same time, under the premise of maintaining a high purification rate, switching between multiple modes also greatly increases the service life of consumable purification fillers, avoiding unused purification fillers from being exposed to moisture due to long-term contact with external gas, greatly extending the overall service life and reducing the frequency of maintenance.

Claims

1. A device for chemical purification and absorption of low-concentration dual carbon, characterized in that: It comprises a purification chamber (1), a first purification chamber (11) located at the upper part of the purification chamber (1), a second purification chamber (12) located at the lower part of the purification chamber (1), and a reinforced purification chamber (13) located at the middle part of the purification chamber (1), wherein an air inlet pipe (14) is provided at the rear side of the top of the first purification chamber (11), and an air outlet pipe (15) is provided at the front side wall of the second purification chamber (12); The first purification chamber (11) and the second purification chamber (12) have the same internal structure, both comprising a plurality of staggered first baffle plates (16), a purification assembly (2) located between each of the first baffle plates (16), the purification assembly (2) comprising a rotatable air-permeable purification plate (21), the air-permeable purification plate (21) being a double-layer arrangement, the upper layer of the air-permeable purification plate (21) being provided with a first purification filler, the lower layer of the air-permeable purification plate (21) being provided with a second purification filler, and the air-permeable purification plates (21) on each of the purification assemblies (2) rotating synchronously; The enhanced purification chamber (13) comprises an upper chamber body (3) and a lower chamber body (4) which are slidably connected, the upper chamber body (3) is provided with a first air inlet hole (31) at the front end, and the lower chamber body (4) is provided with a second air inlet hole (41) at the front end. When the lower chamber body (4) slides upward into the interior of the upper chamber body (3), the first air inlet hole (31) and the second air inlet hole (41) are connected to each other. A fixing plate (32) is provided at the front end of the upper chamber body (3), and an air inlet groove (33) is provided at the bottom of the fixing plate (32). A plurality of second baffle plates (42) are staggered inside the lower chamber body (4), and a mixed purification filler is laid between each of the second baffle plates (42). An auxiliary stirring assembly (5) is provided on the top wall of the upper chamber body (3) corresponding to each of the second baffle plates (42).

2. The device for chemical purification and absorption of low-concentration dual carbon according to claim 1, characterized in that: The first deflection baffle (16) causes the internal gas flow of the first purification chamber (11) and the second purification chamber (12) to be S-shaped, and the second deflection baffle (42) causes the internal gas flow of the enhanced purification chamber (13) to be S-shaped.

3. The device for chemical purification and absorption of low-concentration dual carbon according to claim 1, characterized in that: The air-permeable purification plates (21) on each of the purification components (2) are kept with the first purification filler facing upward or the second purification filler facing upward when they are rotated to a horizontal state. A partition (22) for separating the first purification filler from the second purification filler is provided in the middle of the air-permeable purification plate (21). Air-permeable membranes (23) are provided on both the upper and lower sides of the air-permeable purification plate (21). The first purification filler and the second purification filler are filled inside the two air-permeable membranes (23) respectively.

4. The device for chemical purification and absorption of low-concentration dual carbon according to claim 1, characterized in that: The air-permeable 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 air-permeable purification plate (21). The rotating shaft (24) is rotatably connected to the inner wall of the top of the groove (17). A gear ring (25) is provided in 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) corresponding to the first purification chamber (11) or the second purification chamber (12) are driven to rotate synchronously by a driving component (6). The driving component (6) includes a shell (61) fixed on the bottom surface of the first purification chamber (11) or the second purification chamber (12). A chain belt (62) is provided inside the shell (61). The chain belt (62) 2) forming a ring and the bottom of the chain belt (62) is meshed with the gear ring (25), and each of the two ends of the chain belt (62) is meshed with a driving wheel (63), wherein a driving motor (64) is provided on the inner wall of the shell (61) corresponding to one of the driving wheels (63), and the output shaft of the driving motor (64) is connected to the center of the driving wheel (63), and an auxiliary shaft (65) is provided on the inner wall of the shell (61) corresponding to the other driving wheel (63), and the auxiliary shaft (65) is connected to the center of the driving wheel (63), and a sealing strip (26) is provided on each side of the air permeable purification plate (21), and the sealing strip (26) is attached to and sealed with the two side walls of the groove (17), and the shell (61) passes through the first deflection baffle (16) located on the side thereof.

5. The device for chemical purification and absorption of low-concentration dual carbon according to claim 1, characterized in that: A compression plate (34) is provided at the rear side of the air inlet groove (33), and a convex block (43) is provided at the center of the bottom of the lower warehouse body (4). When the lower warehouse body (4) slides upward into the interior of the upper warehouse body (3), the compression plate (34) pops up to cover the air inlet groove (33). When the lower warehouse body (4) slides downward to move out of the interior of the upper warehouse body (3), the compression plate (34) is compressed by the convex block (43) so that the air inlet groove (33) is connected with the space below the lower warehouse body (4). The fixed plate (32) is fixedly connected to the top plate (18) of the second purification warehouse (12), and a plurality of through holes (181) are provided at the rear side of the top plate (18). The rear side of the lower warehouse body (4) is connected to the interior of the second purification warehouse (12) through a plurality of air guide pipes (44) that penetrate the top plate (18).

6. The device for chemical purification and absorption of low-concentration dual carbon according to claim 1, characterized in that: The auxiliary stirring assembly (5) comprises a rotating rod (51) rotatably connected to the top wall of the upper warehouse body (3), a fan blade (52) is provided in the middle of the rotating rod (51), and a stirring rod (53) is provided at the bottom of the rotating rod (51), and when the lower warehouse body (4) slides upward into the interior of the upper warehouse body (3), the stirring rod (53) is located inside the mixing and purification filler.

7. The device for chemical purification and absorption of low-concentration dual carbon according to claim 1, characterized in that: An electro-hydraulic push rod (7) is provided on one side of the purification bin body (1); an output end of the electro-hydraulic push rod (7) passes through the purification bin body (1) and is connected to a side wall of the lower bin body (4) for driving the lower bin body (4) to move up and down; a detector (141) is provided inside the air inlet pipe (14).

8. The device for chemical purification and absorption of low-concentration dual carbon according to claim 1, characterized in that: The first purification filler is one of LiOH, KOH or K2CO3 with a particle size of less than 2 mm, the second purification filler is a Cu-Mn-Ce composite oxide catalyst with a particle size of 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, weigh 1 to 2 parts of Cu(NO3)2·2H2O and 1 to 2 parts of Mn(NO3)2 by weight, add 4 to 8 parts of deionized water to dissolve and obtain a mixed solution, then weigh 1 to 2 parts of CeO2, immerse it in the mixed solution and stir it thoroughly, and the dried sample is calcined at 500 to 550°C for 2 to 3 hours to obtain a Cu-Mn-Ce composite oxide catalyst.

9. A method for chemical purification and absorption of low-concentration dual carbon, based on the device for chemical purification and absorption of low-concentration dual carbon according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Detection of the gas to be processed: Detect the mixed gas to be processed and classify the corresponding purification mode according to the detection results. If the mixed gas to be processed contains: 5%<CO2 concentration<12%, and CO concentration<400ppm, which is the single CO2 purification mode; CO2 concentration < 5%, and 400ppm < CO concentration < 3000ppm, which is the single CO purification mode; 5%<CO2 concentration<12%, and 400ppm<CO concentration<3000ppm, which is the primary dual-carbon purification mode; 12%<CO2 concentration, and 3000ppm<CO concentration, which is the enhanced dual-carbon purification mode; S2. Gas purification: S2-1, single CO2 purification mode: the first purification fillers of the air-permeable purification plates (21) of the first purification chamber (11) and the second purification chamber (12) face upward, the lower chamber body (4) slides downward and moves out of the interior of the upper chamber body (3), the air inlet groove (33) is opened, and the mixed gas to be treated is injected into the interior of the first purification chamber (11) through the air inlet pipe (14), flows in an S shape through the first baffle plate (16) and is purified by the first purification filler, and then the mixed gas directly flows through the bottom of the lower chamber body (4) through the air inlet groove (33) and enters the second purification chamber (12), flows in an S shape through the first baffle plate (16) and is purified again by the first purification filler; S2-2, single CO purification mode: the second purification fillers of the air-permeable purification plates (21) of the first purification chamber (11) and the second purification chamber (12) face upward, the lower chamber body (4) slides downward and moves out of the interior of the upper chamber body (3), the air inlet groove (33) is opened, and the mixed gas to be treated is injected into the interior of the first purification chamber (11) through the air inlet pipe (14), flows in an S-shape through the first baffle plate (16) and is purified by the second purification filler, and then the mixed gas directly flows through the bottom of the lower chamber body (4) through the air inlet groove (33) and enters the second purification chamber (12), flows in an S-shape through the first baffle plate (16) and is purified again by the second purification filler; S2-3, primary dual-carbon purification mode: the air-permeable purification plates (21) of the first purification chamber (11) and the second purification chamber (12) are kept rotating so that the first purification filler and the second purification filler are alternately facing upwards, the lower chamber (4) slides downward and moves out of the interior of the upper chamber (3), the air inlet groove (33) is opened, and the mixed gas to be treated is injected into the interior of the first purification chamber (11) through the air inlet pipe (14), flows in an S shape through the first baffle plate (16) and is purified by the first purification filler and the second purification filler, and then the mixed gas directly flows through the bottom of the lower chamber (4) through the air inlet groove (33) and enters the second purification chamber (12), flows in an S shape through the first baffle plate (16) and is purified by the first purification filler and the second purification filler again; S2-4, enhanced dual-carbon purification mode: the air-permeable purification plates (21) of the first purification chamber (11) and the second purification chamber (12) are kept rotating so that the first purification filler and the second purification filler are alternately facing upwards, the lower chamber (4) slides upwards into the interior of the upper chamber (3), the air inlet groove (33) closes the first air inlet hole (31) and the second air inlet hole (41) are connected, the mixed gas to be treated is injected into the interior of the first purification chamber (11) through the air inlet pipe (14), flows in an S shape through the first deflection baffle (16) and is purified by the first purification filler and the second purification filler, then the mixed gas enters the interior of the lower chamber (4), flows in an S shape through the second deflection baffle (42), and is enhanced purified by the mixed purification filler, then enters the second purification chamber (12), flows in an S shape through the first deflection baffle (16) and is purified again by the first purification filler and the second purification filler.

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