A dual carbon liquefaction separation apparatus

Abstract

The application discloses a double-carbon liquefaction and separation device, which comprises a double-carbon liquefaction mechanism and a carbon dioxide solidification mechanism connected with the double-carbon liquefaction mechanism through a pipeline; the double-carbon liquefaction mechanism comprises an initial liquefaction pressure tank, a secondary liquefaction pressure tank connected with the initial liquefaction pressure tank, a secondary gas phase pressure tank, a tertiary liquefaction pressure tank connected with the secondary liquefaction pressure tank, and a tertiary gas phase pressure tank connected with the secondary gas phase pressure tank; the carbon dioxide solidification mechanism comprises a vertically-extended solidification mechanism outer cylinder shell, a solidification mechanism inner cylinder shell coaxial with the solidification mechanism outer cylinder shell and fixed in the solidification mechanism outer cylinder shell, and a solidification mechanism separation cylinder shell coaxially arranged between the outer side wall of the solidification mechanism inner cylinder shell and the inner side wall of the solidification mechanism outer cylinder shell; the device has a high-efficiency separation function, can rapidly and accurately separate carbon monoxide and carbon dioxide, and makes the purity of the separated carbon monoxide and carbon dioxide reach a high level, thereby meeting the needs of general industrial production.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste gas treatment, in particular to a dual-carbon liquefaction and separation device. BACKGROUND

[0002] Capturing carbon monoxide (CO) and carbon dioxide (CO2) has important purposes in many aspects. Carbon dioxide is one of the main greenhouse gases, and its large-scale emission into the atmosphere will cause global climate warming, trigger a series of environmental problems such as glacier melting, sea level rise, and increase of extreme weather events. Capturing carbon dioxide can reduce its emission into the atmosphere, which helps to alleviate the impact of climate change and is of great significance to the protection of the ecological balance of the earth.

[0003] Carbon dioxide can be used as a raw material to synthesize a variety of chemical products, such as urea, methanol, dimethyl carbonate, etc. By capturing carbon dioxide and converting it into valuable chemical products, not only can the resource utilization of carbon dioxide be realized, but also the dependence on traditional fossil raw materials can be reduced, and the production cost can be reduced.

[0004] Among them, carbon monoxide has a high combustion heat and can be used as fuel directly, such as in some industrial furnaces, gas turbines and other equipment, carbon monoxide can be mixed with other gases as fuel to provide heat energy.

[0005] However, in the prior art, the mixture of captured carbon monoxide and carbon dioxide has the disadvantages of low efficiency and insufficient separation purity when being separated and treated, and needs to be further improved and optimized. SUMMARY

[0006] The purpose of the present application is to provide a dual-carbon liquefaction and separation device, which can efficiently separate the mixture of captured carbon monoxide and carbon dioxide, and facilitate the resource utilization of each.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0008] A dual-carbon liquefaction and separation device, comprising a dual-carbon liquefaction mechanism and a carbon dioxide solidification mechanism connected to the dual-carbon liquefaction mechanism through a pipeline;

[0009] The dual-carbon liquefaction mechanism comprises an initial liquefaction pressure tank, a secondary liquefaction pressure tank connected to the initial liquefaction pressure tank, a secondary gas phase pressure tank, a tertiary liquefaction pressure tank connected to the secondary liquefaction pressure tank, and a tertiary gas phase pressure tank connected to the secondary gas phase pressure tank;

[0010] The initial liquefaction pressure tank is further connected to an initial storage tank, and an initial compressor is arranged on the output pipe of the initial storage tank;

[0011] The carbon dioxide solidification mechanism comprises a vertically extending solidification mechanism outer cylinder shell, a solidification mechanism inner cylinder shell coaxial with the solidification mechanism outer cylinder shell is fixed inside the solidification mechanism outer cylinder shell, and a solidification mechanism separation cylinder shell coaxially arranged between the outer side wall of the solidification mechanism inner cylinder shell and the inner side wall of the solidification mechanism outer cylinder shell is fixed;

[0012] A plurality of solidification filter element containing tubes extending radially along the solidification mechanism inner cylinder shell are fixed on the solidification mechanism inner cylinder shell and the solidification mechanism separation cylinder shell;

[0013] An open inward solidification flow pipe shell is slidingly connected in the solidification filter element containing tube, and a plurality of carbon dioxide solidification filter elements are arranged in the solidification flow pipe shell.

[0014] Preferably, the initial liquefaction pressure tank is provided with an initial input pipe, an initial liquid phase discharge pipe and an initial gas phase discharge pipe in communication with the inside of the initial liquefaction pressure tank; and the output end of the initial compressor is in communication with the initial input pipe.

[0015] The initial liquid phase discharge pipe is in communication with the secondary liquid phase input pipe through a first communication pipe, the initial gas phase discharge pipe is in communication with the secondary gas phase input pipe through a second communication pipe, and the second communication pipe is provided with a secondary compressor.

[0016] Description: The liquid carbon dioxide and the gaseous carbon monoxide after preliminary separation can be conveniently introduced into the secondary liquefaction pressure tank and the secondary gas phase pressure tank respectively for further separation and treatment.

[0017] Preferably, the secondary liquefaction pressure tank is provided with a secondary liquid phase input pipe, a secondary liquefaction tank liquid phase discharge pipe and a secondary liquefaction tank gas phase discharge pipe in communication with the inside of the secondary liquefaction pressure tank.

[0018] The secondary gas phase pressure tank is provided with a secondary gas phase input pipe, a secondary gas phase tank liquid phase discharge pipe and a secondary gas phase tank gas phase discharge pipe in communication with the inside of the secondary gas phase pressure tank.

[0019] The tertiary liquefaction pressure tank is provided with a tertiary liquid phase input pipe, a tertiary liquefaction tank liquid phase discharge pipe and a tertiary liquefaction tank gas phase discharge pipe in communication with the inside of the tertiary liquefaction pressure tank.

[0020] The tertiary gas phase pressure tank is provided with a tertiary gas phase input pipe, a tertiary gas phase tank liquid phase discharge pipe and a tertiary gas phase tank gas phase discharge pipe in communication with the inside of the tertiary gas phase pressure tank.

[0021] The secondary gas phase tank liquid phase discharge pipe is in communication with the secondary liquid phase input pipe through a third communication pipe.

[0022] The secondary liquefaction tank liquid phase discharge pipe is in communication with the tertiary liquid phase input pipe through a fourth communication pipe, and the fourth communication pipe is provided with a high-pressure plunger pump.

[0023] The secondary liquefaction tank gas phase discharge pipe and the secondary gas phase tank gas phase discharge pipe are in communication with the tertiary gas phase input pipe through a fifth communication pipe, and the fifth communication pipe is provided with a tertiary compressor.

[0024] Note: The liquid carbon dioxide and gaseous carbon monoxide after the secondary separation treatment can be respectively introduced into the third liquid liquefaction pressure tank and the third gaseous phase pressure tank for further separation treatment, so as to obtain more pure carbon dioxide and carbon monoxide components.

[0025] Preferably, the third liquefaction tank liquid phase exhaust pipe and the third gaseous phase tank liquid phase exhaust pipe are connected with a liquid phase storage tank through a sixth communication pipe;

[0026] The third liquefaction tank gaseous phase exhaust pipe and the third gaseous phase tank gaseous phase exhaust pipe are connected with a gaseous phase storage tank through a seventh communication pipe.

[0027] Note: The liquid carbon dioxide and gaseous carbon monoxide separated from the captured mixture of carbon monoxide and carbon dioxide are temporarily stored in the liquid phase storage tank and the gaseous phase storage tank, respectively, and the pressure in the liquid phase storage tank and the gaseous phase storage tank is kept constant, which is beneficial to the stable operation of the whole device.

[0028] Preferably, an initial input chamber of gaseous phase is formed inside the inner cylinder shell of the solidification mechanism, and an exhaust chamber of gaseous phase is formed between the outer side wall of the separation cylinder shell and the inner side wall of the outer cylinder shell of the solidification mechanism;

[0029] The solidification filter element containing pipe is connected with the initial input chamber and the gaseous phase exhaust chamber at both ends, respectively;

[0030] The outer side wall of the outer cylinder shell of the solidification mechanism has a plurality of solidification filter element perforations penetrating in the radial direction thereof, and the plurality of solidification filter element perforations are coaxially aligned with the respective solidification filter element containing pipes one by one;

[0031] The carbon dioxide solidification filter element comprises a solidification filter element shell and carbon dioxide solidification filling salt inside the shell;

[0032] The side wall of the solidification flow pipe shell has a solidification flow exhaust hole connected with the gaseous phase exhaust chamber.

[0033] Note: The carbon dioxide solidification mechanism can further remove a small amount of carbon dioxide remaining in the carbon monoxide, so that the recovered carbon monoxide is more pure.

[0034] Preferably, a vertically extending gaseous phase initial conveying pipe is fixed in the inner cylinder shell of the solidification mechanism, a plurality of gaseous phase output short pipes connected with the gaseous phase initial conveying pipe are fixed outside the gaseous phase initial conveying pipe, and a gaseous phase output control valve is arranged on the gaseous phase output short pipe;

[0035] The lower end of the gaseous phase initial conveying pipe extends to the outside of the outer cylinder shell of the solidification mechanism;

[0036] A plurality of purified gaseous phase exhaust pipes connected with the gaseous phase exhaust chamber are fixed on the top of the outer cylinder shell of the solidification mechanism.

[0037] Explanation: The arrangement of multiple gas phase output short tube arrays can make the input gas flow more stable and facilitate the partition control of the flow.

[0038] Preferably, the end of the curing flow pipe shell penetrating through the curing filter core extends to the outside of the curing mechanism outer cylinder shell, and the end of the curing flow pipe shell extending to the outside of the curing mechanism outer cylinder shell is fixed with a limiting constraint ring;

[0039] A plurality of limiting constraint fixing cylinders are fixed on the outer side wall of the curing mechanism outer cylinder shell, the limiting constraint fixing cylinders are slidably connected with limiting constraint sliding cylinders outside, and the limiting constraint sliding cylinders are fixed with pressing constraint blocks outside;

[0040] The limiting constraint ring is in contact with the outer side wall of the curing mechanism outer cylinder shell by abutting from one side, and the pressing constraint blocks are tightly matched on the other side of the limiting constraint ring;

[0041] The limiting constraint fixing cylinder is provided with a limiting drive telescopic rod for driving the limiting constraint sliding cylinder to move.

[0042] Explanation: The limiting constraint ring is fixed and constrained together with the curing flow pipe shell by the plurality of pressing constraint blocks, and this constraint form is also convenient for the maintenance and replacement of the curing flow pipe shell.

[0043] Compared with the prior art, the beneficial effects of the present application are reflected in the following aspects:

[0044] 1、The structure design of the present application is reasonable, has high efficient separation effect, can quickly and accurately separate carbon monoxide and carbon dioxide, and makes the purity of the separated carbon monoxide and carbon dioxide reach a high level to meet the needs of general industrial production;

[0045] 2、The present application is easy to operate, has good selectivity, has good selectivity for carbon monoxide and carbon dioxide, can realize separation according to the differences in physical and chemical properties of the two, and can minimize the residue of impurities to ensure the quality of the separated products;

[0046] 3、The device of the present application has the advantages of miniaturization and integration, reduces the floor area under the premise of meeting the separation performance, is convenient for installation and transportation, is suitable for production places of various scales, has good flexibility and adaptability;

[0047] 4、The device of the present application can continuously separate and process the mixture of carbon monoxide and carbon dioxide, the purity of the separated carbon monoxide and carbon dioxide is high, the device has stable operation performance, can maintain stable separation effect for mixed gas of various proportions, has strong anti-interference ability, and ensures stable operation of the device. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 is a structural schematic diagram of the double carbon liquefaction mechanism of the present application;

[0049] Figure 2 is a structural schematic diagram of the carbon dioxide solidification mechanism of the present application;

[0050] Figure 3 is a structural schematic diagram of the solidification flow pipe shell of the present application;

[0051] Figure 4 is a structural schematic diagram of the limiting constraint ring of the present application.

[0052] In the figure, 10-double carbon liquefaction mechanism, 101-initial storage tank, 102-initial compressor, 103-secondary compressor, 104-tertiary compressor, 11-initial liquefaction pressure tank, 111-initial input pipe, 112-initial liquid phase discharge pipe, 113-initial gas phase discharge pipe, 114-first communication pipe, 115-second communication pipe, 12-secondary liquefaction pressure tank, 121-secondary liquid phase input pipe, 122-secondary liquefaction tank liquid phase discharge pipe, 123-secondary liquefaction tank gas phase discharge pipe, 124-fourth communication pipe, 125-high pressure plunger pump, 13-secondary gas phase pressure tank, 131-secondary gas phase input pipe, 132-secondary gas phase tank liquid phase discharge pipe, 133-secondary gas phase tank gas phase discharge pipe, 134-third communication pipe, 135-fifth communication pipe, 14-tertiary liquefaction pressure tank, 141-tertiary liquid phase input pipe, 142-tertiary liquefaction tank liquid phase discharge pipe, 143-tertiary liquefaction tank gas phase discharge pipe, 144-sixth communication pipe, 15-tertiary gas phase pressure tank, 151-tertiary gas phase input pipe, 152-tertiary gas phase tank liquid phase discharge pipe, 153-tertiary gas phase tank gas phase discharge pipe, 154-seventh communication pipe, 16-liquid phase storage tank, 17-gas phase storage tank, 20-carbon dioxide solidification mechanism, 201-gas phase initial input chamber, 202-gas phase discharge chamber, 203-purified gas phase discharge pipe, 21-solidification mechanism outer shell, 211-solidification filter core perforation, 22-solidification mechanism inner shell, 221-gas phase initial conveying pipe, 222-gas phase output stub pipe, 2220-gas phase output control valve, 23-solidification mechanism separation shell, 24-solidification filter core containing pipe, 25-solidification flow pipe shell, 251-solidification flow discharge hole, 26-carbon dioxide solidification filter core, 261-solidification filter core shell, 262-carbon dioxide solidification filling salt, 271-limiting constraint ring, 272-limiting constraint fixed cylinder, 273-limiting constraint sliding cylinder, 274-pressing constraint block, 275-limiting drive telescopic rod. DETAILED DESCRIPTION

[0053] The following will be described in combination with Figures 1-4Detailed description of the present application, for the convenience of description, now to the following said direction is defined as follows: the following said up and down, left and right, front and back direction with the respective main view or structure diagram itself projection relationship of up and down, left and right, front and back direction is consistent.

[0054] Embodiment 1:

[0055] A double carbon liquefaction separation device, as shown in Figure 1 、 Figure 2 , including double carbon liquefaction mechanism 10 and through the pipeline and double carbon liquefaction mechanism 10 connection of carbon dioxide solidification mechanism 20;

[0056] As shown in Figure 1 , double carbon liquefaction mechanism 10 includes the initial liquefaction pressure tank 11, with the initial liquefaction pressure tank 11 connection of two stage liquefaction pressure tank 12, two stage gas phase pressure tank 13, with two stage liquefaction pressure tank 12 connection of three stage liquefaction pressure tank 14, and two stage gas phase pressure tank 13 connection of three stage gas phase pressure tank 15;

[0057] The initial liquefaction pressure tank 11 is also connected with the initial storage tank 101, and the output pipe of the initial storage tank 101 is provided with an initial compressor 102;

[0058] As shown in Figure 2 , carbon dioxide solidification mechanism 20 includes a vertical extension of solidification mechanism outer cylinder shell 21, the solidification mechanism inner cylinder shell 22 is fixed in the solidification mechanism outer cylinder shell 21, and the solidification mechanism separation cylinder shell 23 is arranged coaxially between the outer side wall of the solidification mechanism inner cylinder shell 22 and the inner side wall of the solidification mechanism outer cylinder shell 21;

[0059] The solidification mechanism inner cylinder shell 22 and the solidification mechanism separation cylinder shell 23 are jointly fixed with a plurality of solidification filter element containing tubes 24 extending radially along the solidification mechanism inner cylinder shell 22;

[0060] As shown in Figure 3 , the solidification filter element containing tube 24 is slidably connected with the solidification flow pipe shell 25 with the opening facing inwards, and a plurality of carbon dioxide solidification filter elements 26 are arranged in the solidification flow pipe shell 25.

[0061] As shown in Figure 1 , the initial liquefaction pressure tank 11 has an initial input pipe 111, an initial liquid phase discharge pipe 112 and an initial gas phase discharge pipe 113 connected with the inside thereof; the output end of the initial compressor 102 is connected with the initial input pipe 111;

[0062] The initial liquid phase discharge pipe 112 is connected with the secondary liquid phase input pipe 121 through the first communication pipe 114, and the initial gas phase discharge pipe 113 is connected with the secondary gas phase input pipe 131 through the second communication pipe 115, and the second communication pipe 115 is provided with a secondary compressor 103.

[0063] As shown in Figure 1 The secondary liquefaction pressure tank 12 has a secondary liquid phase input pipe 121, a secondary liquefaction tank liquid phase discharge pipe 122, and a secondary liquefaction tank gas phase discharge pipe 123 connected to the inside thereof;

[0064] The secondary gas phase pressure tank 13 has a secondary gas phase input pipe 131, a secondary gas phase tank liquid phase discharge pipe 132, and a secondary gas phase tank gas phase discharge pipe 133 connected to the inside thereof;

[0065] The tertiary liquefaction pressure tank 14 has a tertiary liquid phase input pipe 141, a tertiary liquefaction tank liquid phase discharge pipe 142, and a tertiary liquefaction tank gas phase discharge pipe 143 connected to the inside thereof;

[0066] The tertiary gas phase pressure tank 15 has a tertiary gas phase input pipe 151, a tertiary gas phase tank liquid phase discharge pipe 152, and a tertiary gas phase tank gas phase discharge pipe 153 connected to the inside thereof;

[0067] The secondary gas phase tank liquid phase discharge pipe 132 is connected to the secondary liquid phase input pipe 121 through a third communication pipe 134;

[0068] The secondary liquefaction tank liquid phase discharge pipe 122 is connected to the tertiary liquid phase input pipe 141 through a fourth communication pipe 124, and the fourth communication pipe 124 has a high-pressure plunger pump 125 thereon;

[0069] The secondary liquefaction tank gas phase discharge pipe 123 and the secondary gas phase tank gas phase discharge pipe 133 are connected to the tertiary gas phase input pipe 151 through a fifth communication pipe 135, and the fifth communication pipe 135 has a tertiary compressor 104 thereon.

[0070] As shown in Figure 1 The tertiary liquefaction tank liquid phase discharge pipe 142 and the tertiary gas phase tank liquid phase discharge pipe 152 are connected to the liquid phase storage tank 16 through a sixth communication pipe 144;

[0071] The tertiary liquefaction tank gas phase discharge pipe 143 and the tertiary gas phase tank gas phase discharge pipe 153 are connected to the gas phase storage tank 17 through a seventh communication pipe 154.

[0072] Example 2:

[0073] Based on example 1, as shown in Figure 2 An initial gas phase input chamber 201 is formed in the inside of the solidification mechanism inner cylinder shell 22, and a gas phase discharge chamber 202 is formed between the outside wall of the solidification mechanism partition cylinder shell 23 and the inside wall of the solidification mechanism outer cylinder shell 21;

[0074] The solidification filter element containing pipe 24 is connected to the initial input chamber 201 and the gas phase discharge chamber 202 at both ends thereof;

[0075] AsFigure 3 As shown, the solidification mechanism outer cylinder shell 21 side wall has a plurality of solidification filter core through holes 211 through the radial direction, and the plurality of solidification filter core through holes 211 are coaxially aligned with each solidification filter core containing tube 24 one by one;

[0076] The carbon dioxide solidification filter core 26 includes a solidification filter core shell 261 and a carbon dioxide solidification filling salt 262 inside the solidification filter core shell 261;

[0077] The solidification filter core shell 261 side wall is a porous hollow structure, and the carbon dioxide solidification filling salt 262 is a mixture of calcite, limestone, magnesite, dolomite, and olivine;

[0078] The solidification flow tube shell 25 side wall has a solidification flow exhaust hole 251 connected with the gas phase exhaust chamber 202.

[0079] Embodiment 3:

[0080] Based on embodiment 2, as shown, Figure 2 The solidification mechanism inner cylinder shell 22 is fixed with a vertically extending gas phase initial conveying pipe 221, a plurality of gas phase output short pipes 222 are fixed outside the gas phase initial conveying pipe 221 and connected with the gas phase initial conveying pipe 221, and the gas phase output short pipes 222 are provided with gas phase output control valves 2220;

[0081] The lower end of the gas phase initial conveying pipe 221 extends to the outside of the solidification mechanism outer cylinder shell 21;

[0082] The solidification mechanism outer cylinder shell 21 top is fixed with a plurality of purification gas phase exhaust pipes 203 connected with the gas phase exhaust chamber 202.

[0083] Embodiment 4:

[0084] Based on embodiment 3, as shown, Figure 4 The closed end of the solidification flow tube shell 25 extends to the outside of the solidification mechanism outer cylinder shell 21 through the solidification filter core through hole 211, and the solidification flow tube shell 25 is fixed with a limiting constraint ring 271 at the end extending to the outside of the solidification mechanism outer cylinder shell 21;

[0085] A plurality of limiting constraint fixing cylinders 272 are fixed on the outer side wall of the solidification mechanism outer cylinder shell 21, the limiting constraint fixing cylinders 272 are slidingly connected with limiting constraint sliding cylinders 273 outside, and the limiting constraint sliding cylinders 273 are fixed with pressing constraint blocks 274 outside;

[0086] The limiting constraint ring 271 is in contact with the outer side wall of the solidification mechanism outer cylinder shell 21 on one side close to the solidification mechanism outer cylinder shell 21, and a plurality of pressing constraint blocks 274 are tightly fitted on the other side of the limiting constraint ring 271;

[0087] The limiting and restraining fixed cylinder 272 is provided with a limiting and driving telescopic rod 275 for driving the limiting and restraining sliding cylinder 273 to move, the limiting and driving telescopic rod 275 is an electric control telescopic rod driven by a servo motor in the prior art, the outer rod end of the limiting and driving telescopic rod 275 is fixedly connected with the inner end of the limiting and restraining fixed cylinder 272, and the inner rod end of the limiting and driving telescopic rod 275 is fixedly connected with the inner end of the limiting and restraining sliding cylinder 273.

[0088] The axis direction of the limiting and restraining fixed cylinder 272 forms a 30° angle with the axis direction of the solidification flow pipe shell 25.

[0089] In the actual application process, the initial input pipe 111, the initial liquid phase exhaust pipe 112, the initial gas phase exhaust pipe 113, the secondary liquid phase input pipe 121, the secondary liquid tank liquid phase exhaust pipe 122, the secondary liquid tank gas phase exhaust pipe 123, the secondary gas phase input pipe 131, the secondary gas tank liquid phase exhaust pipe 132, the secondary gas tank gas phase exhaust pipe 133, the tertiary liquid phase input pipe 141, the tertiary liquid tank liquid phase exhaust pipe 142, the tertiary liquid tank gas phase exhaust pipe 143, the tertiary gas phase input pipe 151, the tertiary gas tank liquid phase exhaust pipe 152 and the tertiary gas tank gas phase exhaust pipe 153 each have an independent control valve for controlling whether the pipeline is connected or not.

[0090] For example, when the initial input pipe 111 is in a connected state, it indicates that the control valve on the initial input pipe 111 is in an open state, and when the initial input pipe 111 is in a closed state, it indicates that the control valve on the initial input pipe 111 is in a closed state.

[0091] The initial compressor 102, the secondary compressor 103 and the tertiary compressor 104 are all plunger pump type compressors in the prior art.

[0092] The captured mixture of carbon monoxide and carbon dioxide is stored in the initial storage tank 101, and the initial compressor 102 is used to transport the mixture of carbon monoxide and carbon dioxide in the initial storage tank 101 to the initial liquefaction pressure tank 11 through the initial input pipe 111, the pressure in the initial liquefaction pressure tank 11 is set to 10Mpa, and at normal temperature and high pressure, the carbon dioxide in the initial storage tank 101 will be liquefied, but the carbon monoxide is still in a gaseous state.

[0093] The valve on the initial liquid phase exhaust pipe 112 and the initial gas phase exhaust pipe 113 works as follows: when the pressure in the initial storage tank 101 is greater than or equal to 10Mpa, the valve is opened, and when the pressure is less than 10Mpa, the valve is closed.

[0094] When the pressure in the initial storage tank 101 reaches 10 Mpa, the liquefied carbon dioxide will be discharged through the initial liquid phase discharge pipe 112, the liquefied carbon dioxide is transported through the first connecting pipe 114 and input into the secondary liquefaction pressure tank 12 through the secondary liquid phase input pipe 121;

[0095] The pressure in the secondary liquefaction pressure tank 12 is set to 9.5 Mpa, and the working logic of the valves on the secondary liquefaction tank liquid phase discharge pipe 122 and the secondary liquefaction tank gas phase discharge pipe 123 is that when the pressure in the secondary liquefaction pressure tank 12 is greater than or equal to 9.5 Mpa, the valves are opened, and when the pressure is less than 9.5 Mpa, the valves are closed;

[0096] The gaseous carbon monoxide in the initial storage tank 101 is discharged through the initial gas phase discharge pipe 113 and enters the secondary gas phase pressure tank 13 through the secondary gas phase input pipe 131 under the transportation of the secondary compressor 103;

[0097] The pressure in the secondary gas phase pressure tank 13 is set to 9.5 Mpa, and the working logic of the valves on the secondary gas phase tank liquid phase discharge pipe 132 and the secondary gas phase tank gas phase discharge pipe 133 is that when the pressure in the secondary gas phase pressure tank 13 is greater than or equal to 9.5 Mpa, the valves are opened, and when the pressure is less than 9.5 Mpa, the valves are closed;

[0098] The liquid carbon dioxide in the secondary liquefaction pressure tank 12 is discharged through the secondary liquefaction tank liquid phase discharge pipe 122 and enters the tertiary liquefaction pressure tank 14 through the tertiary liquid phase input pipe 141 under the transportation of the fourth connecting pipe 124;

[0099] The pressure in the tertiary liquefaction pressure tank 14 is set to 9 Mpa, and the working logic of the valves on the tertiary liquefaction tank liquid phase discharge pipe 142 and the tertiary liquefaction tank gas phase discharge pipe 143 is that when the pressure in the tertiary liquefaction pressure tank 1413 is greater than or equal to 9 Mpa, the valves are opened, and when the pressure is less than 9 Mpa, the valves are closed;

[0100] The residual gaseous carbon monoxide in the secondary liquefaction pressure tank 12 is discharged through the secondary liquefaction tank gas phase discharge pipe 123 and transported to the tertiary gas phase pressure tank 15 through the tertiary gas phase input pipe 151 by the tertiary compressor 104 under the transportation of the fifth connecting pipe 135;

[0101] The pressure in the tertiary gas phase pressure tank 15 is set to 9 Mpa, and the working logic of the valves on the tertiary gas phase tank liquid phase discharge pipe 152 and the tertiary gas phase tank gas phase discharge pipe 153 is that when the pressure in the tertiary gas phase pressure tank 1513 is greater than or equal to 9 Mpa, the valves are opened, and when the pressure is less than 9 Mpa, the valves are closed;

[0102] The liquid carbon dioxide remaining in the secondary gas phase pressure tank 13 is discharged through the secondary gas phase tank liquid phase discharge pipe 132 and is input into the secondary liquefaction pressure tank 12 through the secondary liquid phase input pipe 121 under the transportation of the third communication pipe 134, and is transported into the tertiary liquefaction pressure tank 14 of the next stage together with the liquid carbon dioxide in the secondary liquefaction pressure tank 12;

[0103] The gaseous carbon monoxide in the secondary gas phase pressure tank 13 is discharged through the secondary gas phase tank gas phase discharge pipe 133 and is transported into the tertiary gas phase pressure tank 15 through the tertiary gas phase input pipe 151 by the tertiary compressor 104 under the transportation of the fifth communication pipe 135;

[0104] Finally, the liquid carbon dioxide in the tertiary liquefaction pressure tank 14 is discharged through the tertiary liquefaction tank liquid phase discharge pipe 142 and is stored into the liquid phase storage tank 16 under the transportation of the sixth communication pipe 144;

[0105] The pressure in the liquid phase storage tank 16 is set to 8.5Mpa, and the liquid phase storage tank 16 is connected by pipelines with a plurality of sub-packaging storage tanks, so as to facilitate real-time sub-packaging storage of the liquid carbon dioxide in the liquid phase storage tank 16, and the pressure in the liquid phase storage tank 16 is constantly maintained at 8.5Mpa;

[0106] The liquid carbon dioxide remaining in the tertiary gas phase pressure tank 15 is discharged through the tertiary gas phase tank liquid phase discharge pipe 152 and is also stored into the liquid phase storage tank 16 under the transportation of the sixth communication pipe 144;

[0107] The gaseous carbon monoxide in the tertiary gas phase pressure tank 15 is discharged through the tertiary gas phase tank gas phase discharge pipe 153 and is stored into the gas phase storage tank 17 under the transportation of the seventh communication pipe 154;

[0108] The pressure in the gas phase storage tank 17 is set to 8.5Mpa, and the gas phase storage tank 17 is connected by pipelines with a plurality of sub-packaging storage tanks, so as to facilitate real-time sub-packaging storage of the gaseous carbon monoxide in the gas phase storage tank 17, and the pressure in the gas phase storage tank 17 is constantly maintained at 8.5Mpa;

[0109] The gaseous carbon monoxide remaining in the tertiary liquefaction pressure tank 14 is discharged through the tertiary liquefaction tank gas phase discharge pipe 143 and is stored into the gas phase storage tank 17 under the transportation of the seventh communication pipe 154;

[0110] The whole system can continuously separate and process the mixture of carbon monoxide and carbon dioxide, and the separated carbon monoxide and carbon dioxide have high purity;

[0111] The gas phase storage tank 17 is connected with the gas phase initial conveying pipe 221 through a pipeline, and a conveying pump of the prior art is arranged on the connecting pipeline. A small amount of carbon dioxide may be left in the carbon monoxide in the gas phase storage tank 17, and the small amount of carbon dioxide left in the carbon monoxide is removed again by the carbon dioxide solidification mechanism 20;

[0112] The conveying pump of the prior art is used to convey the carbon monoxide gas to be treated into the gas phase initial conveying pipe 221, and the carbon monoxide gas is discharged into the gas phase initial input chamber 201 through the gas phase output short pipes 222;

[0113] The carbon monoxide in the gas phase initial input chamber 201 flows along the radial direction of the solidification mechanism outer cylinder shell 21 into the inside of the solidification flow pipe shell 25, and sequentially passes through the carbon dioxide solidification filter cores 26. The carbon dioxide solidification filling salt 262 is a mixture of powders of calcite, limestone, magnesite, dolomite and olivine in a mass ratio of 17:9:4:3:1. The small amount of carbon dioxide left in the carbon monoxide is adsorbed and removed by the carbon dioxide solidification filling salt 262, so as to obtain pure carbon monoxide gas, and the recovered carbon monoxide gas is conveniently used as a resource;

[0114] The carbon monoxide gas after the adsorption treatment is discharged into the gas phase exhaust chamber 202 through the solidification flow exhaust holes 251, and the carbon monoxide gas in the gas phase exhaust chamber 202 is finally discharged through the multiple purification gas phase exhaust pipes 203 and stored in a carbon monoxide storage tank.

[0115] In the initial state, one side of the limiting constraint ring 271 is in contact with the outer side wall of the solidification mechanism outer cylinder shell 21, and the other side of the limiting constraint ring 271 is pressed and limited by the multiple pressing constraint blocks 274, so that the entire solidification flow pipe shell 25 can be stably placed in the solidification filter core containing pipe 24;

[0116] For replacement of the carbon dioxide solidification filter cores 26 in the solidification flow pipe shell 25, the inner rod of the limiting drive telescopic rod 275 is extended to drive the limiting constraint sliding cylinder 273 to move along the axis direction of the limiting constraint fixed cylinder 272 together with the pressing constraint blocks 274, and the movement direction of the pressing constraint blocks 274 gradually moves away from the limiting constraint ring 271. The solidification flow pipe shell 25 is extracted along the axis direction of the solidification filter core containing pipe 24, and the carbon dioxide solidification filter cores 26 in the solidification flow pipe shell 25 are replaced.

Claims

1. A dual carbon liquefaction separation apparatus, characterized by, The double carbon liquefaction mechanism (10) and the carbon dioxide solidification mechanism (20) connected with the double carbon liquefaction mechanism (10) through a pipeline; The double carbon liquefaction mechanism (10) comprises an initial liquefaction pressure tank (11), a secondary liquefaction pressure tank (12) connected with the initial liquefaction pressure tank (11), a secondary gas phase pressure tank (13), a tertiary liquefaction pressure tank (14) connected with the secondary liquefaction pressure tank (12), and a tertiary gas phase pressure tank (15) connected with the secondary gas phase pressure tank (13); The initial liquefaction pressure tank (11) is further connected with an initial storage tank (101), and an initial compressor (102) is arranged on the output pipe of the initial storage tank (101); The carbon dioxide solidification mechanism (20) comprises a vertically extending solidification mechanism outer cylinder shell (21), and a solidification mechanism inner cylinder shell (22) coaxial with the solidification mechanism outer cylinder shell (21) is fixed inside the solidification mechanism outer cylinder shell (21); a solidification mechanism separation cylinder shell (23) coaxial with the solidification mechanism outer cylinder shell (21) is fixed between the outer side wall of the solidification mechanism inner cylinder shell (22) and the inner side wall of the solidification mechanism outer cylinder shell (21); A plurality of solidification filter element containing pipes (24) radially extending along the solidification mechanism inner cylinder shell (22) are fixed on the solidification mechanism inner cylinder shell (22) and the solidification mechanism separation cylinder shell (23); An open inward solidification flow pipe shell (25) is slidably connected in the solidification filter element containing pipe (24), and a plurality of carbon dioxide solidification filter elements (26) are arranged in the solidification flow pipe shell (25).

2. A dual carbon liquefaction separation apparatus according to claim 1, wherein, The secondary liquefaction pressure tank (12) is provided with a secondary liquid phase input pipe (121), a secondary liquefaction tank liquid phase discharge pipe (122), and a secondary liquefaction tank gas phase discharge pipe (123) communicating with the inside of the secondary liquefaction pressure tank (12); The secondary gas phase pressure tank (13) is provided with a secondary gas phase input pipe (131), a secondary gas phase tank liquid phase discharge pipe (132), and a secondary gas phase tank gas phase discharge pipe (133) communicating with the inside of the secondary gas phase pressure tank (13); The tertiary liquefaction pressure tank (14) is provided with a tertiary liquid phase input pipe (141), a tertiary liquefaction tank liquid phase discharge pipe (142), and a tertiary liquefaction tank gas phase discharge pipe (143) communicating with the inside of the tertiary liquefaction pressure tank (14); The tertiary gas phase pressure tank (15) is provided with a tertiary gas phase input pipe (151), a tertiary gas phase tank liquid phase discharge pipe (152), and a tertiary gas phase tank gas phase discharge pipe (153) communicating with the inside of the tertiary gas phase pressure tank (15); The secondary gas phase tank liquid phase discharge pipe (132) is connected with the secondary liquid phase input pipe (121) through a third communication pipe (134); The secondary liquefaction tank liquid phase discharge pipe (122) is connected with the tertiary liquid phase input pipe (141) through a fourth communication pipe (124), and the fourth communication pipe (124) is provided with a high-pressure plunger pump (125); The secondary liquefaction tank gas phase discharge pipe (123) and the secondary gas phase tank gas phase discharge pipe (133) are connected with the tertiary gas phase input pipe (151) through a fifth communication pipe (135), and the fifth communication pipe (135) is provided with a tertiary compressor (104).

3. A dual carbon liquefaction separation apparatus according to claim 2, wherein, The initial liquefaction pressure tank (11) has an initial input pipe (111), an initial liquid phase discharge pipe (112) and an initial gas phase discharge pipe (113) connected with the inside thereof; the output end of the initial compressor (102) is connected with the initial input pipe (111); The initial liquid phase discharge pipe (112) is connected with the secondary liquid phase input pipe (121) through a first communication pipe (114), the initial gas phase discharge pipe (113) is connected with the secondary gas phase input pipe (131) through a second communication pipe (115), and the second communication pipe (115) is provided with a secondary compressor (103).

4. A dual carbon liquefaction separation apparatus according to claim 2, wherein, The third liquefaction tank liquid phase discharge pipe (142) and the third gas phase tank liquid phase discharge pipe (152) are connected with a liquid phase storage tank (16) through a sixth communication pipe (144) in common; The third liquefaction tank gas phase discharge pipe (143) and the third gas phase tank gas phase discharge pipe (153) are connected with a gas phase storage tank (17) through a seventh communication pipe (154) in common.

5. A dual carbon liquefaction separation apparatus according to claim 1, wherein, The inside of the solidification mechanism inner cylinder shell (22) forms a gas phase initial input chamber (201), and the gas phase discharge chamber (202) is formed between the outer side wall of the solidification mechanism partition cylinder shell (23) and the inner side wall of the solidification mechanism outer cylinder shell (21); The solidification filter core containing pipe (24) is connected with the initial input chamber (201) and the gas phase discharge chamber (202) in common through the solidification filter core perforation (211) and the solidification filter core containing pipe (24) in common; The solidification mechanism outer cylinder shell (21) is provided with a plurality of solidification filter core perforations (211) penetrating through the radial direction thereof, and the solidification filter core perforations (211) are coaxially aligned with the solidification filter core containing pipes (24) in one-to-one correspondence; The carbon dioxide solidification filter core (26) comprises a solidification filter core shell (261) and carbon dioxide solidification filling salt (262) in the solidification filter core shell (261); The solidification flow pipe shell (25) is provided with a solidification flow discharge hole (251) connected with the gas phase discharge chamber (202) on the side wall thereof.

6. A dual carbon liquefaction separation apparatus according to claim 5, wherein, The solidification mechanism inner cylinder shell (22) is fixedly provided with a vertically extending gas phase initial conveying pipe (221), and a plurality of gas phase output short pipes (222) are fixedly connected with the gas phase initial conveying pipe (221) in communication; The lower end of the gas phase initial conveying pipe (221) extends to the outside of the solidification mechanism outer cylinder shell (21); The solidification mechanism outer cylinder shell (21) is fixedly provided with a plurality of purified gas phase discharge pipes (203) connected with the gas phase discharge chamber (202) in communication.

7. A dual carbon liquefaction separation apparatus according to claim 5, wherein, The closed end of the solidification flow pipe shell (25) extends to the outside of the solidification mechanism outer cylinder shell (21) through the solidification filter core perforation (211), and the end of the solidification flow pipe shell (25) extending to the outside of the solidification mechanism outer cylinder shell (21) is fixedly provided with a limiting constraint ring (271). The solidification mechanism outer cylinder shell (21) is fixed with a plurality of limiting constraint fixing cylinders (272) on the outer side wall, the limiting constraint fixing cylinders (272) are slidably connected with limiting constraint sliding cylinders (273) on the outer side, and the limiting constraint sliding cylinders (273) are fixed with compression constraint blocks (274) on the outer side. The limiting constraint ring (271) is in contact with the outer side wall of the solidification mechanism outer cylinder shell (21) on one side of the solidification mechanism outer cylinder shell (21), and a plurality of the compression constraint blocks (274) are in compression fit on the other side of the limiting constraint ring (271). The limiting constraint fixing cylinders (272) are provided with limiting drive telescopic rods (275) for driving the limiting constraint sliding cylinders (273) to move.

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