Benzene washing tower with good anti-blocking capability

Abstract

The utility model relates to the technical field of benzene washing towers, and discloses a benzene washing tower with good anti-blocking capability, which solves the problems in the background technology, and comprises a benzene washing tower body, an absorbent port is arranged on the benzene washing tower body, a spiral flow channel is arranged in the benzene washing tower body, a tower tray is arranged in the benzene washing tower body, and the tower tray is arranged in the benzene washing tower body. Connecting rods are arranged at the two ends of the tower tray, the two ends of each connecting rod are connected with the top wall and the bottom wall in the benzene washing tower body respectively, the tower tray penetrates through the spiral flow channel, a plurality of through holes are formed in the tower tray, a gas box is arranged at the bottom of the benzene washing tower body, and a connecting pipe is arranged on the gas box. The connecting pipe penetrates through the bottom wall of the benzene washing tower body, a discharging opening is formed in the benzene washing tower body, a gas discharging hole is formed in the top of the benzene washing tower body, and the benzene washing tower has the effects that the gas-liquid contact efficiency can be improved, and the blocking risk is remarkably reduced.

Description

Technical Field

[0001] This utility model belongs to the field of benzene washing tower technology, specifically a benzene washing tower with good anti-clogging ability. Background Technology

[0002] Benzene washing towers are key equipment widely used in petroleum refining, chemical production, and environmental protection. They are mainly used to separate and purify benzene series compounds (such as benzene, toluene, xylene, etc.). Their working principle is based on gas-liquid mass transfer, which achieves the absorption and separation of target components through countercurrent contact between gas and liquid in the tower.

[0003] Traditional benzene washing towers typically employ a vertical structure, which can easily lead to uneven gas-liquid distribution. This is especially true when the tower diameter is large, as the gas-liquid flow velocities at the tower center and on the tower wall differ significantly. Uneven distribution can cause localized liquid stagnation or gas short-circuiting, increasing the risk of blockage. To address this, we propose a benzene washing tower with good anti-blockage capabilities. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides the following technical solution: a benzene washing tower with good anti-clogging ability, comprising a benzene washing tower body, an absorbent port provided on the benzene washing tower body, a spiral flow channel provided inside the benzene washing tower body, a tray provided inside the benzene washing tower body, connecting rods provided at both ends of the tray, the two ends of the connecting rods being connected to the top and bottom walls of the benzene washing tower body respectively, the tray penetrating through the spiral flow channel, a plurality of through holes provided on the tray, a gas box provided at the bottom of the benzene washing tower body, a connecting pipe provided on the gas box, the connecting pipe penetrating through the bottom wall of the benzene washing tower body, a discharge port provided on the benzene washing tower body, and a gas discharge hole provided at the top of the benzene washing tower body.

[0005] Preferably, the tray is provided with a vibrator, which is an ultrasonic vibrator, and the vibrator is located at the center of the tray to prevent the accumulation of deposits on the tray and the spiral flow channel.

[0006] Preferably, the benzene washing tower body is provided with a distributor, which is located below the absorbent inlet to uniformly distribute the absorbent and ensure that the absorbent flows uniformly in the tower.

[0007] Preferably, the width of the spiral channel is 50mm-100mm, and the spiral angle of the spiral channel is 15°-30°, 50mm-100mm, to ensure smooth gas-liquid flow and provide sufficient contact area. The gas-liquid separation effect and flow resistance are optimized by adjusting the angle.

[0008] Preferably, the trays are multiple and are arranged linearly inside the benzene washing tower body. The trays are evenly distributed along the height of the benzene washing tower to ensure that the gas and liquid are in full contact on each tray.

[0009] Preferably, a recycling box is connected to the bottom of the discharge port to collect the mixture of absorbent and benzene compounds discharged from the discharge port, which facilitates subsequent processing or recycling.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] During operation, the gas chamber contains a mixed gas containing benzene compounds. After being evenly distributed from the gas chamber, the gas enters the benzene washing tower body through the connecting pipe. The absorbent enters through the absorbent port and, after being evenly distributed by the distributor, enters the spiral flow channel. The gas and liquid come into countercurrent contact in the spiral flow channel. The inclination angle and width design of the spiral flow channel generate centrifugal force during the flow process. The centrifugal force causes the liquid to flow along the channel wall, while the gas concentrates in the center of the channel, forming a strong gas-liquid contact. The tower tray runs through the spiral flow channel, and multiple through holes on the tray allow gas to pass through, increasing the gas-liquid contact area and supporting the spiral flow channel to ensure its stability. Benzene molecules in the gas migrate from the bulk gas phase to the gas-liquid interface through diffusion. At the gas-liquid interface, benzene... The benzene molecules dissolve in the absorbent, forming a rich solution. The absorbent flows downward along the spiral channel, while the gas flows upward. Through the step-by-step mass transfer of the multi-stage trays, the benzene series compounds are fully absorbed, and the concentration of benzene series compounds in the gas gradually decreases. The ultrasonic vibrator prevents the accumulation of deposits on the trays and spiral channel through high-frequency vibration. The vibrator removes deposits in real time, keeping the channel unobstructed. The inclined design of the spiral channel and the self-cleaning function of the vibrator work together to significantly reduce the risk of blockage. The gas after benzene series compounds are removed is discharged from the gas outlet at the top of the benzene washing tower, while the benzene-rich absorbent is discharged from the discharge port at the bottom of the benzene washing tower. The recovery box connected to the discharge port is used to collect the rich solution for subsequent processing or recovery, improving the gas-liquid contact efficiency and significantly reducing the risk of blockage. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a front view structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model;

[0015] In the diagram: 1. Benzene washing tower body; 2. Absorbent inlet; 3. Spiral flow channel; 4. Tray; 5. Connecting rod; 6. Gas box; 7. Connecting pipe; 8. Discharge port; 9. Gas discharge hole; 10. Vibrator; 11. Distributor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Depend on Figure 1-2 The present invention includes a benzene washing tower body 1, an absorbent inlet 2 on the benzene washing tower body 1, a spiral flow channel 3 inside the benzene washing tower body 1, a tray 4 inside the benzene washing tower body 1, connecting rods 5 at both ends of the tray 4, the two ends of the connecting rods 5 being connected to the top and bottom walls of the benzene washing tower body 1 respectively, the tray 4 penetrating the spiral flow channel 3, and multiple through holes on the tray 4, a gas box 6 at the bottom of the benzene washing tower body 1, a connecting pipe 7 on the gas box 6, the connecting pipe 7 penetrating the bottom wall of the benzene washing tower body 1, a discharge port 8 on the benzene washing tower body 1, and a gas discharge hole 9 at the top of the benzene washing tower body 1.

[0018] A vibrator 10 is installed on the tray 4. The vibrator 10 is an ultrasonic vibrator and is located at the center of the tray 4 to prevent the accumulation of deposits on the tray and the spiral flow channel.

[0019] A distributor 11 is installed on the main body 1 of the benzene washing tower. The distributor 11 is located at the lower part of the absorbent inlet 2 and is used to evenly distribute the absorbent to ensure that the absorbent flows evenly in the tower.

[0020] The spiral channel 3 has a width of 50mm-100mm and a spiral angle of 15°-30°, 50mm-100mm, to ensure smooth gas-liquid flow while providing sufficient contact area. The gas-liquid separation effect and flow resistance are optimized by adjusting the angle.

[0021] There are multiple trays 4, which are arranged linearly inside the benzene washing tower body 1. The trays are evenly distributed along the height of the benzene washing tower to ensure that the gas and liquid are in full contact on each tray.

[0022] A recycling box is connected to the bottom of the discharge port 8 to collect the absorbent and benzene mixture discharged from the discharge port for subsequent treatment or recycling.

[0023] Working Principle: During operation, the gas box 6 contains a mixed gas containing benzene compounds. After being evenly distributed from the gas box, the gas enters the benzene washing tower body 1 through the connecting pipe 7. The absorbent, such as lean oil or a special solvent, enters through the absorbent port 2. After being evenly distributed by the distributor 11, the absorbent enters the spiral flow channel 3. The gas and liquid come into countercurrent contact in the spiral flow channel 3. The inclination angle and width design of the spiral flow channel 3 generate centrifugal force during the flow of gas and liquid. The centrifugal force causes the liquid to flow along the flow channel wall, while the gas concentrates in the center of the flow channel, forming a strong gas-liquid contact. The tray 4 runs through the spiral flow channel, and the multiple through holes on the tray 4 allow gas to pass through, increasing the gas-liquid contact area and supporting the spiral flow channel 3 to ensure its stability. Benzene molecules in the gas migrate from the bulk gas phase to the gas-liquid interface through diffusion. At the gas-liquid interface, benzene molecules dissolve in the absorbent, forming a rich liquid. The absorbent flows downward along the spiral channel 3, while the gas flows upward along the spiral channel 3. Through the step-by-step mass transfer of the multi-stage trays 4, the benzene compounds are fully absorbed, and the concentration of benzene compounds in the gas gradually decreases. The ultrasonic vibrator 10 prevents deposits from accumulating on the trays and spiral channels through high-frequency vibration. The vibrator removes deposits in real time, keeping the channels unobstructed. The inclined design of the spiral channel and the self-cleaning function of the vibrator work together to significantly reduce the risk of blockage. The gas after benzene removal is discharged from the gas outlet 9 at the top of the benzene washing tower, and the absorbent rich in benzene compounds is discharged from the discharge port 8 at the bottom of the benzene washing tower. The recovery box connected to the discharge port is used to collect the rich liquid for subsequent processing or recovery, which improves the gas-liquid contact efficiency and significantly reduces the risk of blockage.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A benzene scrubbing column with good anti-blocking capability, comprising a benzene scrubbing column body (1), characterized in that: The benzene washing tower body (1) is provided with an absorbent port (2), the benzene washing tower body (1) is provided with a spiral flow channel (3), the benzene washing tower body (1) is provided with a tray (4), the tray (4) is provided with a connecting rod (5) at both ends, the connecting rod (5) is connected with the top wall and the bottom wall in the benzene washing tower body (1) at both ends respectively, the tray (4) penetrates the spiral flow channel (3), the tray (4) is provided with a plurality of through holes, the benzene washing tower body (1) is provided with a gas box (6) at the bottom, the gas box (6) is provided with a connecting pipe (7), the connecting pipe (7) penetrates the bottom wall of the benzene washing tower body (1), the benzene washing tower body (1) is provided with a discharge port (8), and the benzene washing tower body (1) is provided with a gas discharge hole (9) at the top.

2. A benzene washing tower with good anti-blocking capacity according to claim 1, characterized in that: The tray (4) is provided with a vibrator (10), the vibrator (10) is an ultrasonic vibrator, and the vibrator (10) is arranged at the center of the tray (4).

3. A benzene washing tower with good anti-blocking capacity according to claim 2, characterized in that: The benzene washing tower body (1) is provided with a distributor (11), and the distributor (11) is arranged at the lower part of the absorbent port (2).

4. A benzene washing tower with good anti-blocking capacity according to claim 3, characterized in that: The spiral flow channel (3) has a width of 50mm-100mm, and the spiral flow channel (3) has a spiral inclination angle of 15°-30°.

5. A benzene stripping column with good anti-plugging ability according to claim 4, characterized in that: The tray (4) has a plurality of trays, and the plurality of trays (4) are arranged in a linear manner in the benzene washing tower body (1).

6. A benzene washing tower with good anti-blocking capacity according to claim 5, characterized in that: The discharge port (8) is connected with a recovery box.

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