Isopropanol purification device and purification method thereof

Abstract

The application discloses an isopropyl alcohol purification device and a purification method thereof, relates to the technical field of isopropyl alcohol purification and separation, and solves the problem that particles and liquid impurities in isopropyl alcohol are difficult to be fully separated, thereby leading to poor isopropyl alcohol purification effect. The isopropyl alcohol purification device comprises a molecular sieve adsorption tower and a filter tower, molecular sieve adsorption dehydration assemblies are installed on the upper and lower sides in the molecular sieve adsorption tower, the side of the molecular sieve adsorption tower is provided with the filter tower, the top of the molecular sieve adsorption tower and the filter tower is provided with an integrated purification and separation mechanism extending into the molecular sieve adsorption tower and the filter tower, and the integrated purification and separation mechanism is movably connected with the molecular sieve adsorption tower and the filter tower. In the application, when isopropyl alcohol is purified and separated, a group of direct-current motors are operated to collide with the liquid-separated isopropyl alcohol and oscillate the activated carbon filter block for particle separation, so that the liquid and particle separation effect of isopropyl alcohol is improved.

Description

Technical Field

[0001] This invention relates to the field of isopropanol purification and separation technology, specifically to an isopropanol purification apparatus and its purification method. Background Technology

[0002] Isopropanol is an excellent solvent, effectively dissolving many organic substances and oils. Therefore, it is commonly used in the manufacture of coatings, inks, and adhesives. In these applications, isopropanol helps other ingredients mix better, improving product performance. It can be used as a solvent and cleaning agent, is an important chemical raw material, and also as a fuel additive, with wide applications spanning manufacturing, medical, laboratory, chemical, and energy sectors.

[0003] When producing and processing isopropanol, it is necessary to purify the isopropanol to obtain a relatively pure isopropanol.

[0004] A Chinese patent with publication number CN118384515B discloses an isopropanol purification apparatus and method, including an isopropanol dehydration tower, a dehydration tank, a heat exchange tank, a condenser, and a vacuum pump. The heat exchange tank has a water inlet on its side wall, and a water supply structure is provided between the heat exchange tank and the isopropanol dehydration tower. The isopropanol dehydration tower and the dehydration tank are connected by a drain pipe. A heat exchange spiral tube is installed between the top and bottom of the heat exchange tank, connecting the dehydration tank and the condenser. The vacuum pump is connected to the condenser. Two partitions are provided between opposite sides of the dehydration tank. A support plate is slidably installed between the opposing sides of the water tank. This invention, by setting up an isopropanol dehydration tower and a heat exchange tank, uses a water supply structure to pump the raw material liquid in the heat exchange tank into the isopropanol dehydration tower. The aqueous isopropanol raw material liquid vaporizes in the isopropanol dehydration tower. The material vapor of the initially dehydrated isopropanol raw material liquid enters the dehydration tank through a guide pipe. A vacuum pump, in conjunction with a condenser, extracts the air from the heat exchange spiral tube. The support plate, in conjunction with a pervaporation membrane, separates water molecules from the material vapor to obtain isopropanol with low water content. The aqueous isopropanol raw material liquid to be separated and purified in the heat exchange tank is preheated, thus achieving a structure for recycling the waste heat of isopropanol and reducing production costs.

[0005] However, this isopropanol purification device has the following drawbacks in practical use:

[0006] 1. Existing isopropanol purification equipment requires the separation of impurities (particulate and liquid impurities) within the isopropanol (gas) during purification. Traditionally, isopropanol (gas) is fed into a filter, where the filter's internal structure separates the impurities. However, this method often results in incomplete separation of particulate and liquid impurities, leading to poor isopropanol purification.

[0007] 2. In existing isopropanol purification equipment, the separation of particulate impurities in isopropanol is generally achieved through activated carbon filter layers. However, particulate impurities can easily clog the mesh inside the activated carbon filter layers, which can affect the separation effect of isopropanol particulate impurities during long-term operation. Summary of the Invention

[0008] The purpose of this invention is to provide an isopropanol purification apparatus and a purification method thereof to solve the problems mentioned in the background art.

[0009] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0010] This invention provides an isopropanol purification apparatus, comprising a molecular sieve adsorption tower and a filtration tower. Molecular sieve adsorption and dehydration components are installed on the upper and lower sides inside the molecular sieve adsorption tower, and a filtration tower is installed on the side of the molecular sieve adsorption tower. An integrated purification and separation mechanism extending into the interior of the molecular sieve adsorption tower and the filtration tower is installed at the top of both the molecular sieve adsorption tower and the filtration tower. The integrated purification and separation mechanism is movably connected to the molecular sieve adsorption tower and the filtration tower.

[0011] The bottom of the filtration tower is connected to an exhaust pipe. The molecular sieve adsorption tower and the filtration tower are connected by a transmission pipe. A control valve is installed on the outside of the transmission pipe. A flow guiding and separation component is installed inside the filtration tower.

[0012] The integrated purification and separation mechanism includes:

[0013] An intermittent rotating assembly is installed at the top of the molecular sieve adsorption tower and the filtration tower. A molecular collision assembly is installed at the bottom of one side of the intermittent rotating assembly. The molecular collision assembly is rotatably connected to the inside of the molecular sieve adsorption tower. The molecular collision assembly penetrates the top molecular sieve adsorption and dehydration assembly and is movably disposed inside the molecular sieve adsorption tower.

[0014] A downward oscillation assembly is installed at the bottom on the other side of the intermittent rotation assembly. The downward oscillation assembly is movably disposed inside the filter tower and passes through the flow guiding and separating assembly.

[0015] As a preferred embodiment of the present invention, the molecular sieve adsorption dehydration component includes:

[0016] An annular assembly frame is installed inside the molecular sieve adsorption tower by screws. Multiple annular assembly frames are provided, and a sieve mesh is installed on the inner side of the annular assembly frame.

[0017] The screening wire mesh is provided in multiple ways, and the mesh diameter inside the multiple screening wire mesh decreases from top to bottom;

[0018] A protruding block is installed on the top of the annular assembly frame. The top of the protruding block supports another annular assembly frame. A support frame is provided on the top of the topmost annular assembly frame. The support frame is installed inside the molecular sieve adsorption tower by screws.

[0019] A metal sleeve is installed at the center of the interior of the plurality of screening wire meshes. The top of the metal sleeve is installed on the inner side of the support frame, and a molecular collision component is provided through the inner side of the metal sleeve.

[0020] In a preferred embodiment of the present invention, the top of the annular assembly frame located in the middle is supported by an annular sleeve by the protrusion, and baffles are installed on the upper and lower sides inside the annular sleeve.

[0021] The baffle has multiple through holes inside, and several ceramic balls are arranged on the top of the baffle. The top of the annular sleeve is supported by another annular assembly frame via the protrusion.

[0022] The metal sleeve is provided through the interior of the baffle.

[0023] As a preferred embodiment of the present invention, the flow guiding and separating component includes:

[0024] An intermediate plate is installed inside the filter tower. Multiple inlet ports are installed at the eccentric part of the interior of the intermediate plate, and the bottom of each inlet port is connected to a separation guide tube.

[0025] Assembly blocks are installed inside the protective frame. Multiple assembly blocks are provided, and separation guide cylinders are installed inside each assembly block. Two protective frames are installed inside the filter tower.

[0026] One of the separation guide tubes has two activated carbon filter blocks installed inside.

[0027] In a preferred embodiment of the present invention, a downward oscillation assembly is disposed through the interior of the intermediate plate, and downward oscillation assemblies are disposed on the inner sides of the plurality of separation guide cylinders.

[0028] The downward oscillation assembly is movably disposed on the side of the protective frame.

[0029] As a preferred embodiment of the present invention, the intermittent rotation assembly includes:

[0030] A connecting plate is installed on top of the molecular sieve adsorption tower and the filtration tower. A DC motor is installed at the bottom of the connecting plate. The output end of the DC motor is connected to a half gear, which is rotatably connected to the top of the connecting plate.

[0031] A transmission gear is meshed with the left and right sides of the half gear, and is rotatably connected to the top of the connecting plate. A transmission shaft is connected to the top of the transmission gear.

[0032] The drive shaft is movably connected to the inside of the T-shaped frame, which is mounted on the top of the connecting plate by screws.

[0033] A drive belt is provided, which is connected to the outside of the drive shaft via a key on the inner side of the synchronous pulley. Two drive belts are provided, both of which are movably mounted on the top of the T-shaped frame.

[0034] One of the transmission belts has a molecular collision component connected to its inner side via a synchronous pulley key, and the other transmission belt has a downward oscillation component connected to its inner side via a synchronous pulley key.

[0035] As a preferred embodiment of the present invention, the molecular collision component includes:

[0036] The collision shaft, connected to a synchronous pulley via an external key, is positioned inside a transmission belt. The collision shaft is rotatably connected at the center of the molecular sieve adsorption tower.

[0037] Among them, multiple vertical collision fan blades are installed on the outer side of the collision shaft, and the multiple vertical collision fan blades are movably arranged in the middle of the molecular sieve adsorption tower.

[0038] A main bevel gear is mounted on the outside of the collision shaft, and a secondary bevel gear is meshed with the left and right sides of the main bevel gear. Both the main bevel gear and the secondary bevel gear are rotatably connected to the top of the support frame.

[0039] A horizontal shaft is connected to a bevel gear. The horizontal shaft is rotatably connected to the inner wall of the molecular sieve adsorption tower. Horizontal collision fan blades are installed on the outer side of the horizontal shaft.

[0040] As a preferred embodiment of the present invention, the downward oscillation component includes:

[0041] A rotating shaft, connected to a synchronous pulley via an outer key, is positioned inside another drive belt. This rotating shaft is rotatably connected to the center of the filter tower. An eccentric oscillation component is connected to the bottom of the rotating shaft and is located on the side of the separation guide cylinder.

[0042] The bottom of the eccentric oscillation component is connected to a lower connecting rod, which is rotatably connected to the inner bottom of the filter tower.

[0043] The downward pressing blade has two parts: one downward pressing blade is installed on the outside of the rotating shaft, and the other downward pressing blade is installed on the outside of the lower connecting rod.

[0044] As a preferred embodiment of the present invention, the eccentric oscillation component includes:

[0045] A rotating disk is installed at the bottom of the rotating shaft. Multiple rotating disks are provided, and a protruding rod is installed at the eccentric position of two adjacent rotating disks.

[0046] A movable arm is movably connected to the outside of the protruding rod, the movable arm extends to the outside of the two rotating disks, and the movable arm is movably connected to the inside of the positioning block, the positioning block being installed between the two assembly blocks;

[0047] An oscillating protrusion is mounted on the side of the movable arm. Multiple rotating disks are connected by an extension shaft, and the bottom of the lowest rotating disk is connected to the lower connecting rod.

[0048] The present invention also provides a purification method for an isopropanol purification apparatus, comprising the following steps:

[0049] S1. 99.7% isopropanol is introduced into the bottom of the molecular sieve adsorption tower, and rises to the top of the tower by its buoyancy. The isopropanol then passes through multiple molecular sieve adsorption and dehydration components, where it is dehydrated to obtain high-purity isopropanol with a water content of less than 100 ppm.

[0050] S2. When dehydrating isopropanol, the molecular collision component collides with the rising isopropanol to break up the water inside the isopropanol and improve the dehydration effect.

[0051] S3. After dehydration, the isopropanol is transferred to the interior of the filter tower through the transmission pipeline. The isopropanol particles are separated by the flow separation component inside the filter tower to remove particles with a diameter of 1μm or larger.

[0052] S4. When separating particles inside isopropanol, the downward oscillation component oscillates the flow separation component to improve the separation effect of the flow separation component on particles inside isopropanol.

[0053] S5. Isopropanol, after particle separation and dehydration, is transferred to a distillation column. After distillation, it enters the isopropanol coarse fractionation column and condenser. After condensation in the condenser, the condensate automatically flows to the isopropanol reflux tank. Part of the material is returned to the isopropanol coarse fractionation column, and the other part is sent to the inside of the condenser for cooling. The processed material is transferred to the isopropanol low-boiling point tank for temporary storage. The material in the tank is processed periodically.

[0054] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects:

[0055] 1. In the isopropanol purification device and method, multiple sieve wires and activated carbon filter blocks can be used to separate liquid impurities and particulate impurities within isopropanol (gas), thus achieving isopropanol purification. Simultaneously, during the purification and separation of isopropanol (gas), a set of DC motors can be used to collide the liquid-separated isopropanol (gas) and oscillate the particulate-separated activated carbon filter blocks, improving the efficiency of liquid and particulate separation of isopropanol (gas). Furthermore, the aforementioned collision and oscillation operations are intermittently driven by gear meshing, which reduces wear on parts and ensures sufficient time for the isopropanol (gas) to separate its internal liquid impurities after collision.

[0056] 2. In the isopropanol purification device and method, when separating liquid impurities inside isopropanol (gas), multiple sieve wires with progressively decreasing mesh sizes from top to bottom can sequentially and progressively separate the liquid impurities inside the isopropanol (gas), ensuring effective separation. Simultaneously, several ceramic balls supported by baffles in the middle of the multiple sieve wires provide numerous isopropanol (gas) flow channels through the pore structure of the packing material inside the ceramic balls, increasing the mass transfer efficiency of isopropanol (gas) and thus improving the separation effect.

[0057] 3. In the isopropanol purification device and method, when separating particulate impurities inside isopropanol (gas) using activated carbon filter blocks, the rotating shaft drives multiple movable arms and oscillating protrusions to operate, intermittently oscillating the activated carbon filter blocks. This reduces the probability of particulate impurities clogging the mesh of the activated carbon filter blocks, ensuring the effectiveness of the activated carbon filter blocks in separating particulate impurities from isopropanol (gas). Simultaneously, as the rotating shaft rotates, it also drives the downward-pressing blades to rotate, generating airflow to forcefully blow air down onto the isopropanol (gas), ensuring that the isopropanol (gas) can enter the interior of the activated carbon filter blocks more quickly, improving the efficiency of particulate impurity separation from isopropanol (gas).

[0058] 4. In the isopropanol purification device and method, when the isopropanol (gas) undergoes collision to improve the separation effect of liquid impurities, the rotating collision shaft can simultaneously drive the vertically and horizontally arranged vertical and horizontal collision fan blades to rotate, performing horizontal and vertical collision processing on the isopropanol (gas) in the transmission state, maximizing the uniformity of the collision. Simultaneously, the collision of the gas reduces the size of the gas (including its internal liquid impurities), improving the subsequent separation effect of liquid impurities through the screening screen. Attached Figure Description

[0059] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0060] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0061] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0062] Figure 2 This is a schematic diagram of the overall main view of the present invention;

[0063] Figure 3 This is a schematic cross-sectional view of the entire structure of the present invention;

[0064] Figure 4 This is the present invention. Figure 3 Enlarged structural diagram of region A in the middle;

[0065] Figure 5 This is a schematic diagram of the overall orthographic section of the present invention;

[0066] Figure 6 This is a cross-sectional view of the molecular sieve adsorption tower of the present invention and a schematic diagram of the connection between the molecular sieve adsorption and dehydration components.

[0067] Figure 7 This is a schematic diagram of the explosion structure of the molecular sieve adsorption and dehydration component of the present invention;

[0068] Figure 8 This is a cross-sectional view of the filter tower of the present invention and a schematic diagram of its connection with the flow separation component;

[0069] Figure 9 This is a schematic cross-sectional view of the connection between the flow-guiding and separation component and the eccentric oscillation component of the present invention;

[0070] Figure 10 This is a schematic diagram of the integrated purification and separation mechanism of the present invention;

[0071] Figure 11 This is a schematic diagram of the intermittent rotation component of the present invention;

[0072] Figure 12 This is a schematic diagram of the molecular collision component of the present invention;

[0073] Figure 13 This is a schematic diagram of the structure of the downward oscillation component of the present invention;

[0074] Figure 14 This is a schematic diagram of the structure of the eccentric oscillation component of the present invention exploding;

[0075] In the picture:

[0076] 10. Molecular sieve adsorption tower; 100. Transfer pipeline; 101. Control valve; 20. Filter tower; 200. Drain pipeline;

[0077] 30. Molecular sieve adsorption and dehydration assembly; 301. Annular assembly frame; 3011. Annular sleeve; 3012. Baffle; 302. Screening wire mesh; 303. Protrusion block; 304. Support frame; 305. Metal sleeve;

[0078] 40. Integrated purification and separation mechanism;

[0079] 50. Flow guiding and separation assembly; 501. Intermediate plate; 502. Inlet; 503. Separation guide tube; 504. Assembly block; 505. Protective frame; 506. Activated carbon filter block;

[0080] 60. Intermittent rotation assembly; 601. Connecting plate; 602. DC motor; 603. Half gear; 604. Transmission gear; 605. Transmission shaft; 606. T-shaped frame; 607. Transmission belt;

[0081] 70. Molecular collision assembly; 701. Collision shaft; 702. Vertical collision fan blade; 703. Main bevel gear; 704. Slave bevel gear; 705. Horizontal shaft; 706. Horizontal collision fan blade;

[0082] 80. Downward oscillation assembly; 801. Rotating shaft; 802. Eccentric oscillation component; 8021. Rotating disk; 8022. Protruding rod; 8023. Movable arm; 8024. Positioning block; 8025. Oscillating protrusion; 8026. Extension shaft; 803. Lower connecting rod; 804. Downward blade. Detailed Implementation

[0083] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0084] Please see Figures 1-14 An isopropanol purification device includes a molecular sieve adsorption tower 10 and a filter tower 20. Molecular sieve adsorption and dehydration components 30 are installed on the upper and lower sides inside the molecular sieve adsorption tower 10. The filter tower 20 is installed on the side of the molecular sieve adsorption tower 10. An integrated purification and separation mechanism 40 extending into the interior of the molecular sieve adsorption tower 10 and the filter tower 20 is installed at the top of both the molecular sieve adsorption tower 10 and the filter tower 20. The integrated purification and separation mechanism 40 is movably connected to the molecular sieve adsorption tower 10 and the filter tower 20. An exhaust pipe 200 is connected to the bottom of the filter tower 20. The molecular sieve adsorption tower 10 and the filter tower 20 are connected by a transmission pipe 100. A control valve 101 is installed on the outside of the transmission pipe 100. A guide valve is installed inside the filter tower 20. The flow separation component 50, wherein the integrated purification and separation mechanism 40 includes an intermittent rotation component 60, which is installed at the top of the molecular sieve adsorption tower 10 and the filter tower 20. A molecular collision component 70 is installed at the bottom of one side of the intermittent rotation component 60. The molecular collision component 70 is rotatably connected to the inside of the molecular sieve adsorption tower 10 and penetrates the top molecular sieve adsorption and dehydration component 30. The molecular collision component 70 is movably disposed inside the molecular sieve adsorption tower 10. A downward oscillation component 80 is installed at the bottom of the other side of the intermittent rotation component 60 and is movably disposed inside the filter tower 20. The downward oscillation component 80 penetrates the flow separation component 50.

[0085] The working principle described above is as follows: When purifying 99.7% isopropanol (gas), the isopropanol (gas) is pumped into the molecular sieve adsorption tower 10, where the molecular sieve adsorption dehydration component 30 separates the isopropanol (gas) from the liquid. The separated isopropanol (gas) is then transferred through the transmission pipeline 100 to the filter tower 20, where the flow guiding separation component 50 separates particulate impurities. During the separation of liquid and particulate impurities, the intermittent rotation component 60 can operate, intermittently driving the molecular collision component 70 and the downward oscillation component 80 to collide and oscillate the separated isopropanol (gas), thereby improving the separation effect of isopropanol (gas). Moreover, the intermittent collision and oscillation operation can reduce the wear and fatigue of the internal parts of the molecular collision component 70 and the downward oscillation component 80, extending their service life. On the other hand, it can ensure that the isopropanol (gas) after collision has sufficient time to separate its internal liquid impurities, thus improving the separation effect of isopropanol (gas).

[0086] For details, please refer to the following: Figure 7 The molecular sieve adsorption and dehydration component 30 includes an annular assembly frame 301, which is installed inside the molecular sieve adsorption tower 10 by screws. Multiple annular assembly frames 301 are provided, and screening wire mesh 302 is installed on the inner side of the annular assembly frame 301. Multiple screening wire mesh 302 are provided, and the mesh diameter inside the multiple screening wire mesh 302 decreases from top to bottom. A protrusion block 303 is installed on the top of the annular assembly frame 301. The top of the protrusion block 303 supports another annular assembly frame 301. A support frame 304 is provided on the top of the topmost annular assembly frame 301. The support frame 304 is installed inside the molecular sieve adsorption tower 10 by screws. A metal sleeve 305 is installed at the center of the multiple screening wire meshes 302. The top of the metal sleeve 305 is installed inside the support frame 304. A molecular collision component 70 is provided through the inner side of the metal sleeve 305.

[0087] In this embodiment, the top of the annular assembly frame 301 located in the middle is supported by an annular sleeve 3011 by a protrusion 303. Baffles 3012 are installed on the upper and lower sides inside the annular sleeve 3011. The baffles 3012 have multiple through holes inside and a number of ceramic balls are provided on the top of the baffles 3012. The top of the annular sleeve 3011 is supported by another annular assembly frame 301 by a protrusion 303. A metal sleeve 305 is provided through the inside of the baffles 3012.

[0088] In the above embodiments, the design of the baffle 3012 can limit the movement of several ceramic balls, ensuring that they remain inside the annular sleeve 3011. The design of the ceramic balls, through the high porosity and large specific surface area of ​​their internal packing, contributes to the uniform distribution and effective separation of isopropanol (gas). Specifically, the pore structure of the ceramic ball packing provides numerous isopropanol (gas) flow channels, increasing the mass transfer efficiency of isopropanol (gas) and thus improving the separation effect.

[0089] In the isopropanol purification apparatus of the present invention, when performing liquid impurity separation operation on isopropanol (gas), the liquid impurities inside the isopropanol (gas) pass through multiple screening wire meshes 302, and the liquid impurity separation operation is achieved through the screening wire meshes 302.

[0090] For details, please refer to the following: Figure 9 The flow guiding and separation assembly 50 includes an intermediate plate 501, which is installed inside the filter tower 20. Multiple inlet ports 502 are installed at the eccentric part of the intermediate plate 501, and the bottom of the inlet ports 502 is connected to a separation guide tube 503. There are multiple assembly blocks 504 installed inside the protective frame 505. The separation guide tubes 503 are installed inside the multiple assembly blocks 504. There are two protective frames 505 installed inside the filter tower 20. Two activated carbon filter blocks 506 are installed inside one separation guide tube 503.

[0091] In this embodiment, a downward oscillation assembly 80 is provided through the interior of the intermediate plate 501, and a downward oscillation assembly 80 is provided on the inner side of a plurality of separation guide cylinders 503. The downward oscillation assembly 80 is movably disposed on the side of the protective frame 505.

[0092] In the isopropanol purification apparatus of the present invention, multiple inlets 502 can transmit isopropanol (gas) to the interior of the separation guide tube 503, and the activated carbon filter block 506 inside the separation guide tube 503 achieves the separation of particulate impurities. The positions of the multiple separation guide tubes 503 can be supported and positioned by the assembly block 504 and the protective frame 505. The intermediate plate 501 can seal the inner top of the filter tower 20 to ensure that isopropanol (gas) can only be transmitted to the interior of the inlets 502.

[0093] For details, please refer to the following: Figure 10 and Figure 11The intermittent rotating assembly 60 includes a connecting plate 601, which is installed at the top of the molecular sieve adsorption tower 10 and the filter tower 20. A DC motor 602 is installed at the bottom of the connecting plate 601. The output end of the DC motor 602 is connected to a half gear 603, which is rotatably connected to the top of the connecting plate 601. A transmission gear 604 is meshed with the left and right sides of the half gear 603 and is rotatably connected to the top of the connecting plate 601. A transmission shaft 605 is connected to the top of the transmission gear 604. The drive shaft 605 is movably connected to the inner side of the T-shaped frame 606, which is mounted on the top of the connecting plate 601 by screws. The drive belt 607 is connected to the outer side of the drive shaft 605 by a synchronous pulley key provided on the inner side. There are two drive belts 607, both of which are movably mounted on the top of the T-shaped frame 606. The inner side of one drive belt 607 is connected to the molecular collision component 70 by a synchronous pulley key, and the inner side of the other drive belt 607 is connected to the downward oscillation component 80 by a synchronous pulley key.

[0094] In the isopropanol purification apparatus of the present invention, when the molecular collision assembly 70 and the downward oscillation assembly 80 are operated, the DC motor 602 is started, driving the half gear 603 connected to the output end of the DC motor 602 to rotate. When the half gear 603 rotates, the transmission gears 604 meshing on its left and right sides can rotate intermittently, driving the transmission shaft 605 connected to the top of the transmission gears 604 to rotate. At this time, when the transmission shaft 605 rotates, the synchronous pulley and transmission belt 607 keyed to its outer side can operate.

[0095] For details, please refer to the following: Figure 10 and Figure 12 The molecular collision assembly 70 includes a collision shaft 701, which is connected to a synchronous pulley via an outer key and is located inside a transmission belt 607. The collision shaft 701 is rotatably connected to the center of the molecular sieve adsorption tower 10. Multiple vertical collision fan blades 702 are mounted on the outer side of the collision shaft 701, and the multiple vertical collision fan blades 702 are movably arranged in the middle of the molecular sieve adsorption tower 10. A main bevel gear 703 is mounted on the outer side of the collision shaft 701. A driven bevel gear 704 is meshed on the left and right sides of the main bevel gear 703. Both the main bevel gear 703 and the driven bevel gear 704 are rotatably connected to the top of the support frame 304. A horizontal shaft 705 is connected to the driven bevel gear 704 and is rotatably connected to the inner wall of the molecular sieve adsorption tower 10. Horizontal collision fan blades 706 are mounted on the outer side of the horizontal shaft 705.

[0096] In the isopropanol purification apparatus of the present invention, when the drive belt 607 operates, the collision shaft 701 connected to its inner side via a synchronous pulley key can rotate, causing the vertical collision fan blade 702 mounted at the bottom of the collision shaft 701 to rotate, colliding with the isopropanol (gas) on the side of the vertical collision fan blade 702. While the collision shaft 701 rotates, the main bevel gear 703 connected to its bottom can rotate, causing the driven bevel gear 704 meshing with the side of the main bevel gear 703 to rotate. At this time, when the driven bevel gear 704 rotates, the horizontal shaft 705 and the horizontal collision fan blade 706 mounted on its side can rotate, colliding with the isopropanol (gas) on the side of the horizontal collision fan blade 706, thus improving the efficiency of isopropanol (gas) liquid separation.

[0097] For details, please refer to the following: Figure 10 , Figure 13 and Figure 14 The downward oscillation assembly 80 includes a rotating shaft 801, which is connected to a synchronous pulley via an outer key and is located inside another transmission belt 607. The rotating shaft 801 is rotatably connected to the center inside the filter tower 20. An eccentric oscillation component 802 is connected to the bottom of the rotating shaft 801. The eccentric oscillation component 802 is located on the side of the separation guide cylinder 503. The bottom of the eccentric oscillation component 802 is connected to a lower connecting rod 803, which is rotatably connected to the inner bottom of the filter tower 20. There are two downward oscillation blades 804. One downward oscillation blade 804 is installed on the outside of the rotating shaft 801, and the other downward oscillation blade 804 is installed on the outside of the lower connecting rod 803.

[0098] In this embodiment, the eccentric oscillation component 802 includes a rotating disk 8021, which is installed at the bottom of the rotating shaft 801. Multiple rotating disks 8021 are provided, and a protruding rod 8022 is installed at the eccentric part of two adjacent rotating disks 8021; a movable arm 8023, which is movably connected to the outside of the protruding rod 8022 and extends to the outside of the two rotating disks 8021. The movable arm 8023 is movably connected to the inside of the positioning block 8024, which is installed between two assembly blocks 504; an oscillation protrusion 8025, which is installed on the side of the movable arm 8023. Multiple rotating disks 8021 are connected to each other through an extension shaft 8026, and a lower connecting rod 803 is connected to the bottom of the bottommost rotating disk 8021.

[0099] In the above embodiment, when the rotating shaft 801 rotates, the rotating disk 8021 connected to its bottom can rotate, allowing the movable arm 8023, which is rotatably connected to the bottom of the rotating disk 8021 via the protrusion 8022, to operate. During operation, the movable arm 8023 slides inside the positioning block 8024 and intermittently drives the oscillating protrusion 8025 to oscillate the separation guide cylinder 503, causing the activated carbon filter block 506 inside the separation guide cylinder 503 to oscillate, thus improving the separation effect of particulate impurities in isopropanol (gas).

[0100] In the isopropanol purification apparatus of the present invention, when another drive belt 607 is operating, the rotating shaft 801 connected to it via a synchronous pulley on its inner side can rotate, causing the rotating disk 8021 mounted at the bottom of the rotating shaft 801 to rotate. When the rotating disk 8021 rotates, the remaining rotating disks 8021 connected to its bottom via an extension shaft 8026 can also rotate, causing the lower connecting rod 803 connected to the bottom of the lowest rotating disk 8021 to rotate. At this time, when the lower connecting rod 803 and the rotating shaft 801 rotate, they can drive the downward pressure blade 804 to rotate, generating wind force to push down and blow the isopropanol (gas) to move.

[0101] Please see Figures 1-14 The purification method of the isopropanol purification device includes the following steps:

[0102] S1. 99.7% isopropanol is introduced into the bottom of the molecular sieve adsorption tower 10, and rises to the inner top of the molecular sieve adsorption tower 10 by the buoyancy of the isopropanol. At this time, the isopropanol passes through multiple molecular sieve adsorption and dehydration components 30, and the water inside the isopropanol is dehydrated by the molecular sieve adsorption and dehydration components 30 to obtain high-purity isopropanol with a water content of less than 100 ppm;

[0103] S2. When dehydrating isopropanol, the molecular collision component 70 collides with the rising isopropanol to break up the water inside the isopropanol and improve the dehydration effect of the isopropanol.

[0104] S3. After dehydration, the isopropanol is transferred to the interior of the filter tower 20 through the transfer pipe 100. The isopropanol particles are separated by the flow separation component 50 inside the filter tower 20 to remove particles with a diameter of 1μm or larger.

[0105] S4. When separating particles inside isopropanol, the downward oscillation component 80 oscillates the flow separation component 50 to improve the separation effect of the flow separation component 50 on particles inside isopropanol.

[0106] S5. Isopropanol, after particle separation and dehydration, is transferred to a distillation column. After distillation, it enters the isopropanol coarse fractionation column and condenser. After condensation in the condenser, the condensate automatically flows to the isopropanol reflux tank. Part of the material is returned to the isopropanol coarse fractionation column, and the other part is sent to the inside of the condenser for cooling. The processed material is transferred to the isopropanol low-boiling point tank for temporary storage. The material in the tank is processed periodically.

[0107] When isopropanol is used as a material in electronic chemicals, the following process is included:

[0108] (1) Brief description of UP-grade isopropanol process

[0109] Isopropanol feedstock comes from a 99.7% isopropanol feedstock pump (P3104A / B) and is delivered to the isopropanol crude fractionation tower (T0101). At the top of the isopropanol crude fractionation tower (T0101) (operating conditions: atmospheric pressure, 78~82℃), low-boiling-point isopropanol is collected. This vapor phase is then transported to the isopropanol crude fractionation tower condenser (E0102) and the isopropanol crude fractionation tower cryogenic collector (E0103) for condensation. The condensate then flows by gravity to the No. 1 isopropanol reflux tank (V0101) (operating conditions: atmospheric pressure, ≤50℃). A portion of the material is refluxed back to the isopropanol crude fractionation tower (T0101), while the other portion is transported to the isopropanol low-boiling-point cooler (E0108) for cooling, and then temporarily stored in the isopropanol low-boiling-point tank (V0102) (operating conditions: atmospheric pressure, ≤30℃). The material in the tank is periodically processed. The material in the bottom of the column (operating conditions: atmospheric pressure, 80~82℃) is transported to the isopropanol product column (T0102) via the bottom pump (P0101A / B) of the No. 1 isopropanol crude fractionation column.

[0110] The crude product comes from the bottom pump (P0101A / B) of the No. 1 isopropanol crude fractionation tower and is transported to the isopropanol product tower (T0102). Isopropanol is collected from the top of the isopropanol product tower (T0102) (operating conditions: atmospheric pressure, 81~84℃). The gas phase is transported to the isopropanol product tower condenser (E0105) and isopropanol product tower collector (E0106) for condensation. The condensate flows by gravity to the No. 2 isopropanol reflux tank (V0103) (operating conditions: atmospheric pressure, ≤50℃). Part of the material is returned to the isopropanol product tower (T0102), and the other part is transported to the isopropanol product cooler (E0107) for cooling, and then temporarily stored in the UP-grade isopropanol product tank (V0104A / B) (operating conditions: atmospheric pressure, ≤30℃). The material inside the tank is pumped by the UP-grade isopropanol product pump (P0104A / B) to the UP-grade isopropanol filter (G0101A / B) for filtration. After sampling and testing, the finished product is sent to the filling cabinet or canning cabinet for filling. High-boiling point material is collected from the bottom of the finished product tower (T0102) (operating conditions: atmospheric pressure, 84~87℃), cooled by the isopropanol high-boiling point material cooler (E0109), and temporarily stored in the No. 2 isopropanol high-boiling point material tank (V0105) (operating conditions: atmospheric pressure, ≤30℃). The material in the tank is processed periodically.

[0111] (2) Brief description of HPLC-grade isopropanol process

[0112] The isopropanol feedstock comes from the 99.7% isopropanol feed pump (P3104A / B), which delivers it to the isopropanol feed buffer tank (V0108). From there, it is delivered to the isopropanol adsorption tower (T0103) via the isopropanol adsorption tower feed pump (P0103A / B). After adsorption, the feedstock is collected from the top of the isopropanol adsorption tower (T0103). The adsorbed isopropanol headstock is temporarily stored in the isopropanol headstock tank (V0106), while the qualified adsorbed material enters the isopropanol temporary storage tank (V0107). The material in the tank is then delivered to the isopropanol coarse fractionation tower (T0101) via the No. 1 isopropanol coarse fractionation tower feed pump (P0102A / B).

[0113] Isopropanol low-boiling-point substances are collected from the top of the isopropanol crude fractionation column (T0101) (operating conditions: atmospheric pressure, 78~82℃). The vapor phase is conveyed to the isopropanol crude fractionation column condenser (E0102) and the isopropanol crude fractionation column cryogenic collector (E0103) for condensation. The condensate then flows by gravity to the No. 1 isopropanol reflux tank (V0101) (operating conditions: atmospheric pressure, ≤30℃). A portion of the material is refluxed back to the isopropanol crude fractionation column (T0101), while the other portion is conveyed to the isopropanol low-boiling-point substance cooler (E0108) for cooling, and then temporarily stored in the isopropanol low-boiling-point substance tank (V0102) (operating conditions: atmospheric pressure, ≤30℃). The material in the tank is periodically processed. The material from the column bottom (operating conditions: atmospheric pressure, 80~83℃) is conveyed to the isopropanol product column (T0102) via the No. 1 isopropanol crude fractionation column bottom pump (P0101A / B).

[0114] The crude product comes from the bottom pump (P0101A / B) of the No. 1 isopropanol crude fractionation column and is transported to the isopropanol product column (T0102). Isopropanol is collected from the top of the isopropanol product column (T0102) (operating conditions: atmospheric pressure, 80~83℃). The gas phase is transported to the isopropanol product column condenser (E0105) and isopropanol product column collector (E0106) for condensation. The condensate flows by gravity to the No. 2 isopropanol reflux tank (V0103) (operating conditions: atmospheric pressure, ≤30℃). Part of the material is refluxed back to the isopropanol product column (T0102), and the other part is transported to the isopropanol product cooler (E0107) for cooling, and then temporarily stored in the HPLC-grade isopropanol product tank (V0104C / D) (operating conditions: atmospheric pressure, ≤30℃). The material inside the tank is pumped by an HPLC-grade isopropanol product pump (P0104C / D) to an HPLC-grade isopropanol filter (G0101C / D) for filtration. After sampling and testing, the finished product is sent to the filling cabinet or canning cabinet for filling. High-boiling point material is collected from the bottom of the finished product tower (T0102) (operating conditions: atmospheric pressure, 84-87℃), cooled by the isopropanol high-boiling point material cooler (E0109), and temporarily stored in the No. 2 isopropanol high-boiling point material tank (V0105) (operating conditions: atmospheric pressure, ≤30℃). The material in the tank is processed periodically.

[0115] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.

Claims

1. An isopropanol purification apparatus, comprising a molecular sieve adsorption tower (10) and a filtration tower (20), characterized in that: Molecular sieve adsorption and dehydration components (30) are installed on the upper and lower sides inside the molecular sieve adsorption tower (10). A filter tower (20) is installed on the side of the molecular sieve adsorption tower (10). An integrated purification and separation mechanism (40) extending into the molecular sieve adsorption tower (10) and filter tower (20) is installed on the top of the molecular sieve adsorption tower (10) and filter tower (20). The integrated purification and separation mechanism (40) is movably connected to the molecular sieve adsorption tower (10) and filter tower (20). The bottom of the filter tower (20) is connected to an empty pipe (200). The molecular sieve adsorption tower (10) and the filter tower (20) are connected by a transmission pipe (100). A control valve (101) is installed on the outside of the transmission pipe (100). A flow guiding and separation component (50) is provided inside the filter tower (20). The integrated purification and separation mechanism (40) includes: An intermittent rotating assembly (60) is installed on the top of the molecular sieve adsorption tower (10) and the filter tower (20). A molecular collision assembly (70) is installed on the bottom of one side of the intermittent rotating assembly (60). The molecular collision assembly (70) is rotatably connected to the inside of the molecular sieve adsorption tower (10). The molecular collision assembly (70) penetrates the top molecular sieve adsorption dehydration assembly (30). The molecular collision assembly (70) is movably arranged inside the molecular sieve adsorption tower (10). A downward oscillation assembly (80) is installed at the bottom on the other side of the intermittent rotation assembly (60). The downward oscillation assembly (80) is movably disposed inside the filter tower (20) and penetrates the flow guiding and separating assembly (50). The molecular sieve adsorption dehydration component (30) includes: An annular assembly frame (301) is installed inside the molecular sieve adsorption tower (10) by screws. Multiple annular assembly frames (301) are provided. A sieve wire mesh (302) is installed on the inner side of the annular assembly frame (301). The screening wire mesh (302) is provided in multiple ways, and the mesh diameter inside the multiple screening wire meshes (302) decreases from top to bottom; A protrusion (303) is installed on the top of the annular assembly frame (301). The top of the protrusion (303) supports another annular assembly frame (301). A support frame (304) is provided on the top of the annular assembly frame (301). The support frame (304) is installed inside the molecular sieve adsorption tower (10) by screws. A metal sleeve (305) is installed at the center of the interior of a plurality of screening wire meshes (302). The top of the metal sleeve (305) is installed on the inner side of the support frame (304). A molecular collision assembly (70) is provided through the inner side of the metal sleeve (305).

2. The isopropanol purification apparatus according to claim 1, characterized in that: The top of the annular assembly frame (301) located in the middle is supported by an annular sleeve (3011) by the protrusion (303), and baffles (3012) are installed on the upper and lower sides inside the annular sleeve (3011). The baffle (3012) has multiple through holes inside, and the top of the baffle (3012) is provided with several ceramic balls. The top of the annular sleeve (3011) is supported by another annular assembly frame (301) through the protrusion (303). The metal sleeve (305) is provided through the interior of the baffle (3012).

3. The isopropanol purification apparatus according to claim 1, characterized in that: The flow separation component (50) includes: An intermediate plate (501) is installed inside the filter tower (20). Multiple inlet ports (502) are installed at the eccentric part inside the intermediate plate (501). The bottom of the inlet port (502) is connected to a separation guide tube (503). Assembly blocks (504) are installed inside protective frames (505). Multiple assembly blocks (504) are provided, and separation guide cylinders (503) are installed inside each assembly block (504). Two protective frames (505) are installed inside the filter tower (20). Two activated carbon filter blocks (506) are installed inside one of the separation guide tubes (503).

4. The isopropanol purification apparatus according to claim 3, characterized in that: A downward oscillation assembly (80) is provided through the interior of the intermediate plate (501), and a downward oscillation assembly (80) is provided on the inner side of the plurality of separation guide cylinders (503). The downward oscillation assembly (80) is movably disposed on the side of the protective frame (505).

5. The isopropanol purification apparatus according to claim 4, characterized in that: The intermittent rotation assembly (60) includes: A connecting plate (601) is installed on the top of the molecular sieve adsorption tower (10) and the filter tower (20). A DC motor (602) is installed at the bottom of the connecting plate (601). A half gear (603) is connected to the output end of the DC motor (602). The half gear (603) is rotatably connected to the top of the connecting plate (601). A transmission gear (604) meshes with the left and right sides of the half gear (603), and the transmission gear (604) is rotatably connected to the top of the connecting plate (601). A transmission shaft (605) is connected to the top of the transmission gear (604). The drive shaft (605) is movably connected to the inside of the T-shaped frame (606), and the T-shaped frame (606) is mounted on the top of the connecting plate (601) by screws; A drive belt (607) is connected to the outside of the drive shaft (605) via a synchronous pulley key located on its inner side. Two drive belts (607) are provided, and both drive belts (607) are movably mounted on the top of the T-shaped frame (606). One of the drive belts (607) has a molecular collision assembly (70) connected to its inner side via a synchronous pulley key, and the other drive belt (607) has a downward oscillation assembly (80) connected to its inner side via a synchronous pulley key.

6. The isopropanol purification apparatus according to claim 5, characterized in that: The molecular collision assembly (70) includes: The collision shaft (701) is connected to a synchronous pulley via an outer key and is disposed inside a transmission belt (607). The collision shaft (701) is rotatably connected to the center inside the molecular sieve adsorption tower (10). Among them, multiple vertical collision fan blades (702) are installed on the outer side of the collision shaft (701), and the multiple vertical collision fan blades (702) are movably arranged in the middle of the molecular sieve adsorption tower (10); A main bevel gear (703) is mounted on the outside of the collision shaft (701). A secondary bevel gear (704) is meshed on the left and right sides of the main bevel gear (703). Both the main bevel gear (703) and the secondary bevel gear (704) are rotatably connected to the top of the support frame (304). A horizontal shaft (705) is connected to a bevel gear (704). The horizontal shaft (705) is rotatably connected to the inner wall of the molecular sieve adsorption tower (10). A horizontal collision fan blade (706) is installed on the outer side of the horizontal shaft (705).

7. The isopropanol purification apparatus according to claim 6, characterized in that: The downward oscillation component (80) includes: A rotating shaft (801) is connected to a synchronous pulley via an outer key and is positioned inside another transmission belt (607). The rotating shaft (801) is rotatably connected to the center inside the filter tower (20). An eccentric oscillation component (802) is connected to the bottom of the rotating shaft (801) and is located on the side of the separation guide cylinder (503). The bottom of the eccentric oscillation component (802) is connected to a lower connecting rod (803), which is rotatably connected to the inner bottom of the filter tower (20). The pressure blade (804) is provided in two parts. One pressure blade (804) is installed on the outside of the rotating shaft (801), and the other pressure blade (804) is installed on the outside of the lower connecting rod (803).

8. The isopropanol purification apparatus according to claim 7, characterized in that: The eccentric oscillation component (802) includes: A rotating disk (8021) is installed at the bottom of the rotating shaft (801). Multiple rotating disks (8021) are provided, and a protruding rod (8022) is installed at the eccentric part of two adjacent rotating disks (8021). A movable arm (8023) is movably connected to the outside of the protruding rod (8022), the movable arm (8023) extends to the outside of the two rotating disks (8021), and the movable arm (8023) is movably connected to the inside of the positioning block (8024), the positioning block (8024) is installed between the two assembly blocks (504); An oscillating bump (8025) is installed on the side of the movable arm (8023). Multiple rotating disks (8021) are connected to each other by an extension shaft (8026). The bottom of the lowest rotating disk (8021) is connected to the lower connecting rod (803).

9. A purification method for an isopropanol purification apparatus, specifically for the isopropanol purification apparatus according to any one of claims 1-8, characterized in that, Includes the following steps: S1. 99.7% isopropanol is introduced into the bottom of the molecular sieve adsorption tower (10) and rises to the inner top of the molecular sieve adsorption tower (10) by the floating force of isopropanol. At this time, isopropanol passes through multiple molecular sieve adsorption dehydration components (30). The water inside the isopropanol is dehydrated by the molecular sieve adsorption dehydration components (30) to obtain high-purity isopropanol with a water content of less than 100ppm. S2. When dehydrating isopropanol, the molecular collision component (70) collides with the rising isopropanol to disperse the water inside the isopropanol and improve the effect of dehydrating the water inside the isopropanol. S3. After dehydration, the isopropanol is transferred to the interior of the filter tower (20) through the transfer pipe (100). The isopropanol particles are separated by the flow separation component (50) inside the filter tower (20) to remove particles with a particle size of more than 1 μm. S4. When separating the particles inside isopropanol, the pressure oscillation component (80) oscillates the flow separation component (50) to improve the separation effect of the flow separation component (50) on the particles inside isopropanol. S5. Isopropanol, after particle separation and dehydration, is transferred to a distillation column. After distillation, it enters the isopropanol coarse fractionation column and condenser. After condensation in the condenser, the condensate automatically flows to the isopropanol reflux tank. Part of the material is returned to the isopropanol coarse fractionation column, and the other part is sent to the inside of the condenser for cooling. The processed material is transferred to the isopropanol low-boiling point tank for temporary storage. The material in the tank is processed periodically.

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