Crude benzene desulfurization device

Abstract

The utility model provides a crude benzene desulfurization device which comprises a desulfurization box, uniformly distributed rotating pipes are rotationally arranged in the desulfurization box, atomizing nozzles are arranged at openings uniformly formed in the outer sides of the rotating pipes, a driving box is arranged on the outer side of the desulfurization box, and uniformly distributed rotating shafts are rotationally arranged in the driving box; the rotating shafts are fixedly connected with the adjacent rotating pipes, the outer side faces of the rotating shafts are fixedly sleeved with gears, a guide rail is arranged in the driving box, a sliding seat is slidably arranged on the outer side of the guide rail, a rack plate is arranged on the upper surface of the sliding seat, and the gears are connected with the rack plate in an engaged mode. According to the crude benzene desulfurization device disclosed by the utility model, vaporized benzene can uniformly and fully react with a sprayed oxidizing agent when crude benzene is desulfurized, so that the crude benzene desulfurization effect can be effectively improved, and the processing efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of chemical processing technology, and specifically relates to a crude benzene desulfurization device. Background Technology

[0002] Crude benzene is a mixture extracted from coal tar or petroleum refining processes. Its main component is benzene, but it also contains certain amounts of other aromatic hydrocarbons and impurities. It is an important raw material for the production of refined benzene and other chemical products. During processing, a crude benzene desulfurization unit is required to remove sulfide impurities such as thiols, thioethers, and thiophenes.

[0003] Existing crude benzene desulfurization devices involve injecting vaporized benzene into the desulfurization tank through nozzles, followed by the spraying of an oxidant. The oxidant (such as hydrogen peroxide or oxygen from the air) oxidizes thiols into disulfides or sulfonates, reducing their toxicity and facilitating subsequent processing. The vaporized benzene then undergoes further adsorption and catalytic reactions via a molecular sieve catalyst to achieve crude benzene desulfurization. However, in actual use, the fixed nozzle positions make it difficult for the vaporized benzene to be evenly sprayed with the oxidant at certain locations during its flow. This results in varying desulfurization reaction rates at different locations, with some vaporized benzene leaving the oxidant spray range before complete desulfurization, affecting the desulfurization effect and potentially impacting subsequent processing. Utility Model Content

[0004] In view of this, this utility model addresses the shortcomings of the prior art by providing a crude benzene desulfurization device, which can make the vaporized benzene react evenly and fully with the sprayed oxidant during crude benzene desulfurization, thereby effectively improving the crude benzene desulfurization effect and increasing processing efficiency.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a crude benzene desulfurization device, including a desulfurization box, in which rotating tubes are evenly distributed inside the desulfurization box, and atomizing nozzles are provided at the evenly distributed openings on the outside of the rotating tubes. A drive box is provided on the outside of the desulfurization box, and rotating shafts are evenly distributed inside the drive box. The rotating shafts are respectively connected and fixed to adjacent rotating tubes, and gears are fixedly sleeved on the outer side of the rotating shafts. A guide rail is provided inside the drive box, and a sliding seat is slidably provided on the outside of the guide rail. A rack plate is provided on the upper surface of the sliding seat, and the gears are meshed with the rack plate. A solenoid valve one is provided at the lower end of the drain pipe at the bottom of the desulfurization box, and a solenoid valve two is provided at the upper end of the exhaust pipe at the top of the desulfurization box. An air inlet pipe is provided on the outside of the desulfurization box, and a solenoid valve three is provided at the end of the air inlet pipe away from the desulfurization box. Support legs are evenly distributed at the bottom of the desulfurization box, and support feet are provided at the bottom of each support leg.

[0006] As a further improvement of this utility model, both the intake pipe and the exhaust pipe are filled with molecular sieves.

[0007] As a further improvement of this utility model, a liquid tank is provided on the outside of the drive box, and a solenoid valve is provided at the upper end of the liquid inlet pipe at the top of the liquid tank. The rotating pipe and the liquid tank are connected by a connecting pipe.

[0008] As a further improvement of this utility model, an electric push rod is installed inside the drive box, and the telescopic end of the electric push rod is connected and fixed to the sliding seat; a control box is installed outside the desulfurization box, and solenoid valve one, solenoid valve two, solenoid valve three, solenoid valve four and the electric push rod are all electrically connected to the control box.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0010] Firstly, the operation of the solenoid valve is controlled by the control box, allowing the oxidant to enter the interior of the liquid tank. The atomized oxidant is then sprayed downwards through the atomizing nozzles on the rotating pipe. The atomized oxidant reacts with the vaporized benzene flowing upwards in the desulfurization tank, thereby achieving desulfurization of the vaporized benzene.

[0011] Secondly, during the spraying of atomized oxidant by the atomizing nozzle, the operation of the electric push rod is controlled by the control box, causing the extension and retraction end of the electric push rod to continuously extend or retract, driving the atomizing nozzle set on the rotating tube to continuously swing back and forth. By spraying the atomized oxidant downward through the continuously swinging atomizing nozzle, the upward-flowing vaporized benzene can react evenly and fully with the sprayed oxidant, which can effectively improve the desulfurization effect of crude benzene and improve the processing efficiency.

[0012] Third, the vaporized benzene is initially filtered and desulfurized by the molecular sieve filled inside the intake pipe. After desulfurization, the vaporized benzene flows through the exhaust pipe to the next processing equipment, where it is further filtered and desulfurized by the molecular sieve packing material inside the exhaust pipe, which can assist in the desulfurization of the vaporized benzene.

[0013] Fourth, the friction between the support legs and the ground is increased by the support feet at the bottom of the support legs, which can prevent the desulfurization box from shifting due to vibration during use. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal cross-sectional structure of this utility model;

[0017] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0018] Figure 4 This is a schematic diagram of the planar structure of this utility model.

[0019] In the diagram: 101, desulfurization box; 102, support leg; 103, support foot; 104, drain pipe; 105, solenoid valve one; 106, exhaust pipe; 107, solenoid valve two; 108, air inlet pipe; 109, solenoid valve three; 201, liquid tank; 202, solenoid valve four; 203, rotating pipe; 204, atomizing nozzle; 205, connecting pipe; 206, drive box; 207, rotating shaft; 208, gear; 209, guide rail; 210, sliding seat; 211, rack plate; 212, electric push rod; 301, control box. Detailed Implementation

[0020] To better understand this utility model, the following embodiments further illustrate its content, but the scope of protection of this utility model is not limited to the embodiments described below. Numerous specific details are set forth in the following description to provide a more thorough understanding of this utility model. However, it will be apparent to those skilled in the art that this utility model can be practiced without one or more of these details.

[0021] like Figure 1 , 4 As shown, the device includes a desulfurization box 101. The desulfurization box 101 has evenly distributed rotating tubes 203 rotatably arranged inside. Atomizing nozzles 204 are installed at evenly distributed openings on the outer sides of the rotating tubes 203. A drive box 206 is installed on the outer side of the desulfurization box 101. Evenly distributed rotating shafts 207 are rotatably arranged inside the drive box 206. The rotating shafts 207 are connected and fixed to adjacent rotating tubes 203. Gears 208 are fixedly sleeved on the outer side of each rotating shaft 207. A guide rail 209 is installed inside the drive box 206. A sliding seat 210 is slidably arranged on the outer side of the guide rail 209. A rack plate 211 is installed on the upper surface of the sliding seat 210. The gears 208 are meshed with the rack plate 211.

[0022] like Figure 2 , 4 As shown, a solenoid valve 105 is installed at the lower end of the drain pipe 104 at the bottom of the desulfurization box 101, a solenoid valve 107 is installed at the upper end of the exhaust pipe 106 at the top of the desulfurization box 101, an air inlet pipe 108 is installed on the outside of the desulfurization box 101, and a solenoid valve 109 is installed at the end of the air inlet pipe 108 away from the desulfurization box 101; both the air inlet pipe 108 and the exhaust pipe 106 are filled with molecular sieves.

[0023] like Figure 3 , 4As shown, a liquid tank 201 is provided on the outside of the drive box 206. A solenoid valve 202 is provided at the upper end of the liquid inlet pipe at the top of the liquid tank 201. The rotating pipe 203 and the liquid tank 201 are connected by a connecting pipe 205. An electric push rod 212 is provided inside the drive box 206. The telescopic end of the electric push rod 212 is connected and fixed to the sliding seat 210.

[0024] like Figure 1 As shown, a control box 301 is installed on the outside of the desulfurization box 101. Solenoid valve 105, solenoid valve 207, solenoid valve 309, solenoid valve 402 and electric push rod 212 are all electrically connected to the control box 301.

[0025] When crude benzene needs to be desulfurized, the control box 301 regulates the operation of solenoid valve 2 107 and solenoid valve 3 109 to introduce vaporized benzene that has been converted into vapor into the interior of the inlet pipe 108, so that the vaporized benzene enters the interior of the desulfurization box 101 through the inlet pipe 108 and undergoes preliminary filtration and desulfurization through the molecular sieve filled inside the inlet pipe 108.

[0026] The oxidant delivery pipe is connected to the liquid inlet pipe, and the solenoid valve 202 is operated by the control box 301 to allow the oxidant to enter the interior of the liquid tank 201. The oxidant inside the liquid tank 201 is transported into the interior of the rotating pipe 203 through the connecting pipe 205. Then, the atomized oxidant is sprayed downward through the atomizing nozzle 204 set on the rotating pipe 203. The atomized oxidant comes into contact with the vaporized benzene flowing upward in the desulfurization box 101 and reacts to achieve desulfurization of the vaporized benzene.

[0027] During the spraying of atomized oxidant by the atomizing nozzle 204, the operation of the electric push rod 212 is regulated by the control box 301, causing the extension and retraction end of the electric push rod 212 to continuously extend or retract. This causes the extension and retraction end of the electric push rod 212 to drive the sliding seat 210 connected to it to continuously reciprocate on the guide rail 209. This, in turn, causes the sliding seat 210 to drive the rack plate 211 to continuously reciprocate. Through the meshing relationship between the rack plate 211 and the gear 208, the rotating shaft 207 where the gear 208 is located is driven to rotate. This causes the rotating shaft 207 to drive the rotating tube 203 connected to it to rotate in both directions. This causes the atomizing nozzle 204 set on the rotating tube 203 to continuously oscillate back and forth. By continuously oscillating the atomizing nozzle 204, the atomized oxidant is sprayed downwards, which can make the upward flowing vaporized benzene react evenly and fully with the sprayed oxidant, effectively improving the desulfurization effect of crude benzene and improving the processing efficiency.

[0028] After desulfurization, the vaporized benzene flows through exhaust pipe 106 to the next processing equipment, where it is further filtered and desulfurized by molecular sieve packing material installed in exhaust pipe 106.

[0029] The liquid products after desulfurization are collected at the bottom of the desulfurization tank 101. When it is necessary to discharge the desulfurized products, the control box 301 regulates the operation of the solenoid valve 105 to discharge the desulfurized liquid products.

[0030] According to another embodiment of the present invention, such as Figure 1 , 4 As shown, the bottom of the desulfurization box 101 is provided with evenly distributed support legs 102, and each support leg 102 is provided with a foot 103 at its bottom. During use, the foot 103 at the bottom of the support leg 102 increases the friction between the support leg and the ground, thereby preventing the desulfurization box 101 from shifting position due to vibration.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A crude benzene desulfurization device, comprising a desulfurization tank (101), characterized in that: The desulfurization box (101) is equipped with evenly distributed rotating tubes (203) inside. Atomizing nozzles (204) are provided at the evenly distributed openings on the outside of the rotating tubes (203). A drive box (206) is provided on the outside of the desulfurization box (101). Evenly distributed rotating shafts (207) are provided inside the drive box (206). The rotating shafts (207) are connected and fixed to the adjacent rotating tubes (203). Gears (208) are fixedly sleeved on the outer side of the rotating shafts (207). A guide rail (209) is provided inside the drive box (206). A sliding seat (210) is slidably provided on the outside of the guide rail (209). A rack plate (211) is provided on the upper surface of the sliding seat (210). The gears (208) are meshed with the rack plate (211).

2. The crude benzene desulfurization device as described in claim 1, characterized in that: The bottom of the desulfurization tank (101) is equipped with a solenoid valve 1 (105) at the lower end of the drain pipe (104), the top of the desulfurization tank (101) is equipped with a solenoid valve 2 (107) at the upper end of the exhaust pipe (106), the outside of the desulfurization tank (101) is equipped with an air inlet pipe (108), and the end of the air inlet pipe (108) away from the desulfurization tank (101) is equipped with a solenoid valve 3 (109).

3. The crude benzene desulfurization device as described in claim 2, characterized in that: Both the intake pipe (108) and the exhaust pipe (106) are filled with molecular sieves.

4. The crude benzene desulfurization device as described in claim 2, characterized in that: A liquid tank (201) is provided on the outside of the drive box (206). A solenoid valve (202) is provided at the upper end of the liquid inlet pipe at the top of the liquid tank (201). The rotating pipe (203) and the liquid tank (201) are connected by a connecting pipe (205).

5. The crude benzene desulfurization device as described in claim 4, characterized in that: The drive box (206) is equipped with an electric push rod (212), and the telescopic end of the electric push rod (212) is connected and fixed to the sliding seat (210).

6. The crude benzene desulfurization device as described in claim 5, characterized in that: A control box (301) is provided on the outside of the desulfurization box (101). Solenoid valve one (105), solenoid valve two (107), solenoid valve three (109), solenoid valve four (202) and electric push rod (212) are all electrically connected to the control box (301).

7. The crude benzene desulfurization device as described in claim 1, characterized in that: The bottom of the desulfurization box (101) is provided with evenly distributed support legs (102), and the bottom of each support leg (102) is provided with a foot (103).

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