Carbon dioxide adsorption tower for methanol productionTechnical Field
The invention relates to the technical field of adsorption towers, in particular to a carbon dioxide adsorption tower for methanol production.
Background
In modern industrial production, the production and utilization of carbon dioxide is an important research area. As in the field of coal chemical industry, complex processes are typically involved to produce and process carbon dioxide.
In the prior art, the methanol is produced by utilizing the coal gas, the coal gas is required to be pressurized and purified, the carbon monoxide is required to be subjected to conversion to generate hydrogen and carbon dioxide, the redundant carbon dioxide is required to be removed through a decarburization process, the carbon dioxide is removed and consists of a plurality of adsorption towers, the adsorption towers are required to alternately perform a plurality of operation steps such as adsorption, 8 times of pressure equalizing and depressurization, 2 times of reverse discharge, vacuumizing, 8 times of pressure equalizing and boosting, purifying gas final boosting and the like, the process is complex, the equipment is numerous, the great investment of the equipment means high cost, a great deal of funds are required from the adsorption towers to various compressors, reactors and other equipment, a great deal of energy is required to be consumed for the operation of numerous equipment, the production cost is increased, and continuous and stable operation is difficult to realize in the operation process of the complex equipment system.
Disclosure of Invention
The invention aims to provide a carbon dioxide adsorption tower for methanol production, which solves the problems that the existing carbon dioxide removal equipment in the background art is relatively high in cost and cannot continuously work.
The invention provides a carbon dioxide adsorption tower for methanol production, which comprises a shell and an adsorption mechanism arranged in the shell, wherein the adsorption mechanism is rotationally arranged in the shell, a driving mechanism for driving the adsorption mechanism to rotate is arranged outside the shell, the shell consists of a base and a tower body arranged at the top of the base, the adsorption mechanism comprises a rotating shell rotationally arranged in the shell, two groups of semicircular channels are vertically arranged in the rotating shell in a penetrating manner, the two channels are not communicated, a first adsorption filler and a second adsorption filler are respectively arranged in the two channels, the first adsorption filler and the second adsorption filler are alternately adsorbed and desorbed for regeneration, a first pipeline and a second pipeline are respectively fixedly arranged at two sides of the bottom of the adsorption mechanism, the first pipeline and the second pipeline are respectively communicated with the interiors of the first adsorption filler and the second adsorption filler, an air inlet pipe and a negative pressure pipe are respectively fixedly arranged at two sides of the exterior of the base, the first adsorption filler and the second adsorption filler are used for adsorbing carbon dioxide in the entering gas, and the negative pressure pipe is connected with negative pressure equipment at the other end of the negative pressure pipe for alternately desorbing the carbon dioxide in the first adsorption filler and the second adsorption filler;
The middle part of first pipeline is installed first branch pipe, and the second branch pipe is installed to the lower part of first pipeline, and the mid-mounting of second pipeline has the third branch pipe, and the fourth branch pipe is installed to the lower part of second pipeline, and third branch pipe and first branch pipe correspond with intake pipe and negative pressure pipe, the inside of base is provided with extrusion mechanism, and second branch pipe and fourth branch pipe extend to the inside extrusion mechanism of base and correspond, and the top of tower body is provided with the blast pipe, is provided with communicating pipe between blast pipe and the base, and extrusion mechanism is used for making the inside pressure that produces of base in the adsorption mechanism rotation process to inside pushing into adsorption mechanism to the gas suction in the blast pipe, make the first absorption filler or the second absorption filler residual carbon dioxide between the intussuseption filler produce kinetic energy and absorbed.
Further, the top and the bottom of the rotating shell are respectively and fixedly provided with an exhaust shell and an air inlet shell, the exhaust shell and the air inlet shell are respectively provided with two groups corresponding to the first adsorption filler and the second adsorption filler, the upper part of the exhaust shell is embedded and provided with a one-way exhaust valve, and the first pipeline and the second pipeline are fixedly arranged below the air inlet shell.
Further, the middle top of base is provided with the recess, and the inside of base is provided with annular inner chamber, and the inside of recess is provided with the intercommunication groove with the inner chamber intercommunication, the inside of base still is provided with movable groove, movable groove and inner chamber intercommunication.
The extrusion mechanism further comprises a first valve plate and a second valve plate which are fixedly arranged on the second branch pipe and the fourth branch pipe, the first valve plate and the second valve plate are rotatably arranged in the inner cavity, a movable sealing plate is movably arranged in the movable groove, a first one-way air inlet valve and a second one-way air inlet valve are fixedly arranged at the top of the base, the bottom of the communication pipe is Y-shaped and is communicated with the inner cavity through the first one-way air inlet valve and the second one-way air inlet valve.
Further, the end of the second branch pipe is located at the first valve plate, penetrates the first valve plate clockwise and is communicated with the inner cavity, the end of the fourth branch pipe is located at the second valve plate, penetrates the second valve plate anticlockwise and is communicated with the inner cavity, the driving mechanism rotates 180 degrees clockwise or each time, the extrusion mechanism follows rotation during rotation, when the adsorption mechanism rotates clockwise, the first valve plate compresses gas between the first valve plate and the movable sealing plate, the gas enters the first adsorption filler along the second branch pipe and the first pipeline, residual carbon dioxide in the first adsorption filler moves upwards and is adsorbed completely, in the process, the second valve plate rotates clockwise, the pressure between the second valve plate and the movable sealing plate is reduced, the gas in the exhaust pipe is adsorbed through the second one-way air inlet valve and the communicating pipe, the gas is product gas after carbon dioxide is removed, the first adsorption filler and the second adsorption filler are replaced after the rotation of the adsorption mechanism is completed, the third branch pipe below the second adsorption filler corresponds to the air inlet pipe, the first branch pipe below the first adsorption filler starts to adsorb carbon dioxide, and the first adsorption filler corresponds to the negative pressure pipe, and the first adsorption filler regenerates carbon dioxide in the first adsorption filler.
Further, the externally mounted of tower body has sealed shell, actuating mechanism is including rotating the ring gear that sets up in the inside tower body and sealed shell, and ring gear fixed connection is in the outside of rotating the shell, actuating mechanism still includes fixed mounting at the motor of base outer wall, and the output of motor extends to the inside of sealed shell and fixedly connected with spur gear, spur gear and ring gear meshing are connected.
Further, the first pipeline, the first branch pipe and the second branch pipe are in an inverted F shape, the first pipeline, the first branch pipe and the second branch pipe are communicated with each other, and the second pipeline is identical to the first pipeline in structure.
Compared with the prior art, the carbon dioxide adsorption tower for methanol production has the beneficial effects that the adsorption mechanism is designed to be in a rotatable mode, two groups of semicircular channels and the corresponding first adsorption filler and second adsorption filler are arranged inside the adsorption mechanism, the adsorption mechanism is utilized to drive the adsorption mechanism to rotate, so that the two groups of adsorption fillers are subjected to adsorption and desorption regeneration operations in turn, meanwhile, the branched pipes corresponding to the air inlet pipe and the negative pressure pipe are arranged on the shell base, and the extrusion mechanism is combined to control the change of the gas flow direction and the pressure.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a split view of the overall structure of the present invention;
FIG. 3 is a schematic view of an adsorption mechanism, a drive mechanism, a first conduit, a second conduit, and an extrusion mechanism of the present invention;
FIG. 4 is a cross-sectional view of the suction mechanism and drive mechanism of the present invention;
FIG. 5 is a schematic view of the structure of the first and second pipelines according to the present invention;
FIG. 6 is a schematic view of a base structure of the present invention;
FIG. 7 is a schematic view of the base of the present invention in a cross sectional configuration;
fig. 8 is a schematic view showing the motion state of the base and the pressing mechanism of the present invention.
In the figure, 1, a shell, 11, a base, 111, a groove, 112, a communicating groove, 113, an inner cavity, 114, a movable groove, 115, a first one-way air inlet valve, 116, a second one-way air inlet valve, 12, a tower body, 121, an exhaust pipe, 122, a sealing shell, 2, an adsorption mechanism, 21, a rotating shell, 22, a first adsorption filler, 23, a second adsorption filler, 24, an exhaust shell, 25, a one-way exhaust valve, 26, an air inlet shell, 3, a driving mechanism, 31, a motor, 32, a spur gear, 33, a toothed ring, 4, a first pipeline, 41, a first branch pipe, 42, a second branch pipe, 5, a second pipeline, 51, a third branch pipe, 52, a fourth branch pipe, 6, an extrusion mechanism, 61, a connecting rod, 62, a rotating sealing plate, 63, a first valve plate, 64, a second valve plate, 65, a movable sealing plate, 7, a communicating pipe, 8, an air inlet pipe, 9 and a negative pressure pipe are shown.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order to solve the technical problems that the existing carbon dioxide removal equipment is relatively high in cost and cannot continuously work, as shown in fig. 1-8, the following preferable technical scheme is provided:
As shown in fig. 1-2, a carbon dioxide adsorption tower for methanol production comprises a shell 1 and an adsorption mechanism 2 arranged in the shell 1, wherein the adsorption mechanism 2 is rotatably arranged in the shell 1, a driving mechanism 3 for driving the adsorption mechanism 2 to rotate is arranged outside the shell 1, the shell 1 consists of a base 11 and a tower body 12 arranged at the top of the base 11, the adsorption mechanism 2 comprises a rotary shell 21 rotatably arranged in the shell 1, as shown in fig. 4, two groups of semicircular channels are vertically arranged in the rotary shell 21 in a penetrating manner, the two channels are not communicated, a first adsorption filler 22 and a second adsorption filler 23 are respectively arranged in the two channels, the first adsorption filler 22 and the second adsorption filler 23 are subjected to adsorption and desorption regeneration, two sides of the bottom of the adsorption mechanism 2 are fixedly provided with a first pipeline 4 and a second pipeline 5 respectively, the first pipeline 4 and the second pipeline 5 are respectively communicated with the inside of the first adsorption filler 22 and the second adsorption filler 23, two sides of the outside of the base 11 are fixedly provided with an air inlet pipe 8 and a negative pressure pipe 9 respectively, the air inlet pipe 8 is used for air inlet, the first adsorption filler 22 and the second adsorption filler 23 are used for carbon dioxide adsorption filler 23 to be connected with a negative pressure adsorption device for adsorbing and desorbing carbon dioxide;
As shown in fig. 5, the first branch pipe 41 is installed in the middle of the first pipe 4, the second branch pipe 42 is installed in the lower part of the first pipe 4, the third branch pipe 51 is installed in the middle of the second pipe 5, the fourth branch pipe 52 is installed in the lower part of the second pipe 5, the third branch pipe 51 and the first branch pipe 41 correspond to the air inlet pipe 8 and the negative pressure pipe 9, the extrusion mechanism 6 is arranged in the base 11, the second branch pipe 42 and the fourth branch pipe 52 extend to the inside of the base 11 to correspond to the extrusion mechanism 6, the exhaust pipe 121 is arranged at the top of the tower body 12, the communicating pipe 7 is arranged between the exhaust pipe 121 and the base 11, the extrusion mechanism 6 is used for generating pressure in the base 11 in the rotation process of the adsorption mechanism 2, and sucking and pushing the gas in the exhaust pipe 121 into the adsorption mechanism 2, so that the residual carbon dioxide in the first adsorption filler 22 or the second adsorption filler 23 generates kinetic energy and is adsorbed.
As shown in fig. 4, the top and the bottom of the rotating shell 21 are respectively and fixedly provided with an exhaust shell 24 and an air inlet shell 26, the exhaust shell 24 and the air inlet shell 26 are respectively provided with two groups corresponding to the first adsorption packing 22 and the second adsorption packing 23, a one-way exhaust valve 25 is embedded and installed above the exhaust shell 24, and the first pipeline 4 and the second pipeline 5 are fixedly installed below the air inlet shell 26.
As shown in fig. 6-7, a groove 111 is arranged above the middle of the base 11, an annular inner cavity 113 is arranged in the base 11, a communication groove 112 communicated with the inner cavity 113 is arranged in the groove 111, a movable groove 114 is also arranged in the base 11, and the movable groove 114 is communicated with the inner cavity 113.
As shown in fig. 5, the pressing mechanism 6 comprises a connecting rod 61 fixedly installed below the space between the two groups of air inlet shells 26, a rotary sealing plate 62 is installed at the bottom of the connecting rod 61, the rotary sealing plate 62 is rotatably arranged inside a groove 111 and used for sealing a communication groove 112, a first pipeline 4 and a second pipeline 5 penetrate from the top of the rotary sealing plate 62 and penetrate from the side surface and extend to the inside of an inner cavity 113, the pressing mechanism 6 further comprises a first valve plate 63 and a second valve plate 64 fixedly installed on a second branch pipe 42 and a fourth branch pipe 52, the first valve plate 63 and the second valve plate 64 are rotatably arranged inside the inner cavity 113, a movable sealing plate 65 is movably arranged inside the movable groove 114, a first one-way air inlet valve 115 and a second one-way air inlet valve 116 are fixedly arranged at the top of the base 11, and the bottom of the communication pipe 7 is Y-shaped and is communicated with the inside the inner cavity 113 through the first one-way air inlet valve 115 and the second one-way air inlet valve 116.
As shown in fig. 3 and 5, the end of the second branch pipe 42 is located at the first valve plate 63, penetrates the first valve plate 63 clockwise and is communicated with the inner cavity 113, the end of the fourth branch pipe 52 is located at the second valve plate 64 anticlockwise and penetrates the second valve plate 64 and is communicated with the inner cavity 113, the driving mechanism 3 rotates 180 ° clockwise or each time, the pressing mechanism 6 rotates, as shown in the left side of fig. 8, when the adsorption mechanism 2 rotates clockwise, the first valve plate 63 compresses the gas between the first valve plate 63 and the movable sealing plate 65, the gas enters the first adsorption packing 22 along the second branch pipe 42 and the first pipeline 4, the residual carbon dioxide inside the first adsorption packing 22 moves upwards and is fully adsorbed, in this process, the second valve plate 64 rotates clockwise, the pressure between the second valve plate 64 and the movable sealing plate 65 becomes smaller, the gas inside the exhaust pipe 121 is adsorbed through the second unidirectional air inlet valve 116 and the communicating pipe 7, the gas is the product gas after the carbon dioxide is removed, the adsorption mechanism 2 completes rotation, the first adsorption packing 22 and the second adsorption packing 23 completes replacement, the third adsorption packing 23 below the second adsorption packing 23 corresponds to the first suction pipe 22 and the negative pressure adsorption mode is started to the first suction pipe 22 and the negative pressure adsorption packing 9 corresponds to the first suction pipe 51 and the negative pressure adsorption packing is started to the first suction pipe 9.
As shown in fig. 3, the sealing shell 122 is installed on the outer part of the tower body 12, the driving mechanism 3 comprises a toothed ring 33 rotatably arranged inside the tower body 12 and the sealing shell 122, the toothed ring 33 is fixedly connected on the outer part of the rotating shell 21, the driving mechanism 3 further comprises a motor 31 fixedly installed on the outer wall of the base 11, the output end of the motor 31 extends to the inner part of the sealing shell 122 and is fixedly connected with a spur gear 32, and the spur gear 32 is in meshed connection with the toothed ring 33.
The first pipe 4, the first branch pipe 41 and the second branch pipe 42 are in an inverted F shape, and the first pipe 4, the first branch pipe 41 and the second branch pipe 42 are communicated with each other, and the second pipe 5 has the same construction as the first pipe 4.
The specific working principle is as follows:
the raw material gas enters the tower body 12 through the air inlet pipe 8, the adsorption mechanism 2 is at an initial position, the first branch pipe 41 of the first pipeline 4 below the first adsorption filler 22 is communicated with the air inlet pipe 8, the second adsorption filler 23 is in a regeneration process, the raw material gas enters the first adsorption filler 22 through the first pipeline 4, carbon dioxide in the gas is adsorbed by the adsorption filler, purified product gas is discharged through the exhaust shell 24 and the one-way exhaust valve 25, and is discharged out of the tower through the exhaust pipe 121 in the next process;
In the adsorption filler switching and residual gas treatment stage, when the first adsorption filler 22 is adsorbed and approaches saturation, the motor 31 is started, the adsorption mechanism 2 is driven to rotate clockwise by 180 degrees, in the rotating process, the connecting rod 61 drives the rotating sealing plate 62 to rotate, meanwhile, the first valve plate 63 and the second valve plate 64 also rotate along with the rotating sealing plate 62, the first valve plate 63 compresses gas between the first valve plate 63 and the movable sealing plate 65, the gas enters the first adsorption filler 22 along the second branch pipe 42 and the first pipeline 4, residual carbon dioxide is pushed to move upwards and be completely adsorbed, meanwhile, the pressure between the second valve plate 64 and the movable sealing plate 65 is reduced, and product gas in the exhaust pipe 121 is sucked into the inner cavity 113 through the communicating pipe 7 and the second one-way air inlet valve 116 to prepare for subsequent circulation;
And in the desorption regeneration stage, after the rotation of the adsorption mechanism 2 is completed, the positions of the first adsorption filler 22 and the second adsorption filler 23 are exchanged, at the moment, the second adsorption filler 23 starts to adsorb carbon dioxide, a first branch pipe 41 below the first adsorption filler 22 is communicated with the negative pressure pipe 9, the negative pressure equipment vacuumizes the inside of the first adsorption filler 22 through the negative pressure pipe 9, the adsorption balance is broken, the adsorbed carbon dioxide is desorbed and extracted, and the regeneration of the adsorption filler is realized.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should be covered by the protection scope of the present invention by making equivalents and modifications to the technical solution and the inventive concept thereof.