MTBE deep desulfurization device and working method thereof

Abstract

The invention relates to the technical field of chemical raw material treatment, and discloses an MTBE deep desulfurization device and a working method thereof. The MTBE deep desulfurization device comprises a mounting plate, a supporting plate, a tank body, a mesh cylinder, a driving assembly, a cleaning assembly, a stirring assembly, a waste bin, a collecting assembly I, a collecting assembly II, a hollow shaft, a filter plate I, a mesh plate, a feeding assembly, a transmission assembly and a feeding pipe, the tank body is fixedly mounted on the mounting plate, a plurality of supporting legs are fixedly mounted on the bottom side of the mounting plate, and the supporting plate is fixedly mounted on the supporting legs. The desulfurization tank is reasonable in design, materials can be fully mixed and reacted in the tank body, the desulfurization efficiency is improved, impurities and particles in the materials can be effectively filtered out, the quality of the desulfurized materials is guaranteed, a desulfurizing agent can be uniformly distributed in the materials in a spraying mode, and the desulfurization effect is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical raw material treatment, and particularly to a deep desulfurization device for MTBE and its working method. Background Art

[0002] In modern industrial production, methyl tert-butyl ether (MTBE), as an important chemical raw material, is widely used in the field of gasoline additives. It can effectively improve the octane number of gasoline, improve its combustion performance, and reduce the emission of tail gas pollutants. However, the sulfur impurities contained in MTBE will have a negative impact on its application performance. It will not only reduce the quality of gasoline, but may also cause problems such as engine corrosion and catalyst poisoning. Therefore, the desulfurization treatment of MTBE has become an essential key link in industrial production.

[0003] At present, common MTBE desulfurization technologies mainly include adsorption desulfurization, hydrodesulfurization, and oxidative desulfurization, etc. Although the adsorption desulfurization technology is simple to operate, it has the problem of limited adsorption capacity. It is necessary to frequently replace the adsorption filler. At the same time, the desulfurization efficiency is generally only through single adsorption, and there is still room for improvement. Moreover, the contact area between the filler and the MTBE solution per unit time is relatively limited. At the same time, the filler is usually set in a static state, which will affect the desulfurization efficiency to a certain extent.

[0004] To sum up, in order to solve the above deficiencies, the present invention proposes a novel deep desulfurization device for MTBE and its working method. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art, and to propose a deep desulfurization device for MTBE and its working method.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A deep desulfurization device for MTBE, comprising a mounting plate, a support plate, a tank body, a mesh cylinder, a driving component, a cleaning component, a stirring component, a waste bin, a first collection component, a second collection component, a hollow shaft, a first filter plate, a mesh plate, a feeding component, a transmission component, and a feeding pipe;

[0008] The tank body is fixedly installed on the mounting plate. A plurality of support legs are fixedly installed on the bottom side of the mounting plate. The support plate is fixedly installed on the plurality of support legs. The top side of the first filter plate is spherical and fixedly installed on the inner side wall of the tank body. The mesh cylinder is fixedly installed at the center position on the top side of the first filter plate. The hollow shaft is rotatably installed at the center position in the tank body and is rotationally connected to the first filter plate. A plurality of through holes are formed in the hollow shaft. The mesh plate is fixedly installed on the inner side wall of the tank body and is fixedly connected to the top side of the first filter plate. The mesh plate is arranged in a funnel shape. The driving assembly and the feeding assembly are both arranged on the support plate, and both the driving assembly and the feeding assembly are connected to the hollow shaft. The cleaning assembly is arranged in the tank body and is connected to the hollow shaft. The stirring assembly is arranged on both the inner and outer sides of the mesh cylinder and is connected to the hollow shaft. The transmission assembly is arranged on the stirring assembly and the cleaning assembly. The first collection assembly and the second collection assembly are respectively arranged on the bottom side and the top side of the mounting plate and are respectively connected to the tank body;

[0009] A feed pipe communicating with the tank body is fixedly installed on the tank body. A feed valve is arranged on the feed pipe, and the top end of the feed pipe is arranged in a funnel shape. A liquid inlet pipe communicating with the tank body is arranged at a position below the mounting plate on the outer side of the tank body.

[0010] Preferably, the feeding assembly includes a first transfer pump, a liquid storage tank, a transfer pipe, and a plurality of upper spray pipes. A plurality of upper spray pipes communicating with the hollow shaft are radially fixedly installed on the hollow shaft. Two circular blocks are hermetically and rotatably installed in the hollow shaft. The first transfer pump and the liquid storage tank are fixedly installed on the top side of the support plate. The water inlet of the first transfer pump is communicated with the liquid storage tank. The water outlet of the first transfer pump is connected to a transfer pipe. The transfer pipe is fixedly connected to the two circular blocks, and the top end of the transfer pipe extends to the top side of the upper circular block and is in a communication state with the plurality of upper spray pipes through the inner cavity of the hollow shaft.

[0011] Preferably, the feeding assembly further includes a second transfer pump, an extraction pipe, and a branch pipe. The second transfer pump is arranged on the top side of the first transfer pump in a series connection manner with a drive shaft. The water inlet of the second transfer pump is connected to an extraction pipe extending to the lowest point position in the tank body. A branch pipe is connected to the extraction pipe. A control valve is arranged on the branch pipe. The water outlet of the second transfer pump extends to the top side of the lower circular block and is fixedly connected to the lower circular block. A plurality of lower spray pipes are radially fixedly installed on the hollow shaft.

[0012] Preferably, the driving assembly includes a motor, a driving gear, and a driven gear. The motor is fixedly installed on the top side of the support plate. A driving gear is fixedly sleeved on the output shaft of the motor. The bottom end of the hollow shaft extends below the tank body and is fixedly sleeved with a driven gear. The driving gear meshes with the driven gear.

[0013] Preferably, the driving assembly further includes an external gear disk, a ratchet wheel, a ratchet pawl and a spring. An external gear disk is rotatably installed at the bottom of the tank body. A ratchet wheel is fixedly sleeved on the driving shaft of the second delivery pump. A ratchet pawl is hingedly installed on the inner wall of the external gear disk. The ratchet pawl is adapted to the ratchet wheel. A same spring is fixedly installed between the ratchet pawl and the inner wall of the external gear disk. And the external gear disk meshes with the driven gear.

[0014] Preferably, the cleaning assembly includes a plurality of scraping bars. A plurality of scraping bars are fixedly installed on the hollow shaft. The outer sides of the plurality of scraping bars are in contact with the inner side wall of the tank body and the top side of the mesh plate.

[0015] Preferably, the stirring and mixing assembly includes a spiral blade, a plurality of rotating shafts and a plurality of stirring rods. A support frame is fixedly installed on the outer side of the mesh cylinder. A plurality of rotating shafts are rotatably installed on the support frame. A plurality of stirring rods which are arranged in a flat shape are radially fixedly installed on the plurality of rotating shafts. And the upper and lower surfaces of the stirring rods are both arranged in an inclined shape. A spiral blade is fixedly installed on the hollow shaft.

[0016] Preferably, the transmission assembly includes an internal gear disk and a plurality of transmission gears. Transmission gears are fixedly sleeved on the tops of the plurality of rotating shafts. An internal gear disk is fixedly installed on one side of the plurality of scraping bars close to the mesh cylinder. The plurality of transmission gears are all meshed with the internal gear disk.

[0017] Preferably, the first collection assembly includes a recovery tank, a drainage pipe, a return pipe, a sealing plate and a second filter plate. A recovery tank is fixedly installed on the bottom side of the mounting plate. A discharge port is formed in one side of the recovery tank away from the tank body. A sealing plate is slidably installed in the discharge port in a sealed manner. A second filter plate is fixedly installed in the recovery tank in an inclined shape. A drainage pipe and a return pipe are fixedly installed on one side of the recovery tank close to the tank body in sequence from top to bottom. Two ends of the drainage pipe are respectively located on the top sides of the first filter plate and the second filter plate. Two ends of the return pipe are respectively located on the bottom sides of the first filter plate and the second filter plate.

[0018] Preferably, the second collection assembly includes a waste bin, a discharge pipe and a discharge valve. A waste bin is fixedly installed on the top side of the mounting plate. An inclined discharge pipe is connected between the waste bin and the tank body. And a discharge valve is arranged on the discharge pipe.

[0019] The present invention also provides a working method of an MTBE deep desulfurization device, including the following steps:

[0020] S1: Open the feed valve and introduce an appropriate amount of activated carbon filler into the tank body from the feed pipe, and then close the feed valve. Introduce the MTBE solution to be treated into the tank body through the liquid inlet pipe and close the liquid inlet pipe. Then, use the second delivery pump to convey the MTBE solution at the inner wall position of the bottom of the tank body into the hollow shaft and make it spray out from the through holes, and spray it onto the activated carbon filler in a spraying manner through a plurality of lower spray pipes, so as to improve the contact area between the MTBE solution and the activated carbon filler per unit time, and further improve the desulfurization efficiency;

[0021] S2: Then start the motor. The motor controls the rotation of the hollow shaft through the driving gear and the driven gear, causing multiple scraping bars to scrape the inner sidewall of the tank body and the top side of the mesh plate. At the same time, the internal gear disk cooperates with multiple transmission gears to control the rotation of multiple rotating shafts, so as to control multiple stirring rods to turn the activated carbon filler outside the mesh cylinder upward. At the same time, under the action of the hollow shaft, the spiral blade can be controlled to turn the activated carbon filler in the mesh cylinder downward, making the activated carbon filler in the tank body keep surging, so as to further improve the desulfurization efficiency of the MTBE solution. Start the first transfer pump, which can convey the desulfurizer in the liquid storage tank upward to the position of the upper spray pipe and spray it through the upper spray pipe, so as to further improve the desulfurization rate of the MTBE solution;

[0022] S3: The solution during the desulfurization process is circulated and conveyed upward under the action of the second transfer pump for desulfurization operation, so as to achieve the effect of deep desulfurization. The solid debris generated during the desulfurization operation will be filtered out above the first filter plate under the action of the mesh plate, and then can enter the recovery box under the guidance of the solution flow and factors such as its own weight. After entering the recovery box, it will be filtered again under the action of the second filter plate, making the solution flow back into the tank body, while the solid debris is collected in the recovery box. The solution after desulfurization is discharged through the branch pipe. At the same time, during the desulfurization process, part of the solution can be taken out from the branch pipe position for detection at irregular intervals. At the same time, after the activated carbon reaches the saturated adsorption state, by controlling the reverse rotation of the motor, the turning direction of the activated carbon particles inside and outside the mesh cylinder can be adjusted. At this time, open the discharge valve, and when the activated carbon filler passes through the inlet of the discharge pipe, it can be guided to the waste bin for temporary storage.

[0023] Compared with the prior art, the present invention provides a MTBE deep desulfurization device and its working method, which have the following beneficial effects:

[0024] 1. By setting structures such as the mounting plate, the support plate, the tank body, the mesh cylinder, the driving component, the cleaning component, the stirring component, the waste bin, the first collection component, the second collection component, the hollow shaft, the first filter plate, the mesh plate, the feeding component, the transmission component and the feeding pipe, the driving component controls the rotation of the hollow shaft, and then can control the cleaning component to clean the inner sidewall of the tank body and the mesh plate, and at the same time control the stirring component to stir the activated carbon particles, so as to enable the activated carbon particles to perform better desulfurization operation on the MTBE solution. At the same time, cooperating with the feeding component can convey the desulfurizer solution and the MTBE solution into the tank body, and can convey the solution after desulfurization in the tank body back into the tank body for deep desulfurization again, so as to greatly improve the desulfurization efficiency and effect.

[0025] 2. By setting up the collection component I and the collection component II, the solid debris formed during the desulfurization operation can be collected, and at the same time, the solution can be refluxed into the tank, thus avoiding waste. At the same time, after the activated carbon particles are used up, they can be collected in the waste bin, which is convenient for the staff to handle uniformly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a three-dimensional structural schematic diagram of an MTBE deep desulfurization device proposed by the present invention;

[0027] Figure 2 In the present invention Figure 1 is a schematic diagram of the structure from another perspective;

[0028] Figure 3 In the present invention Figure 1 is a partial sectional structural schematic diagram;

[0029] Figure 4 is a partial three-dimensional structural schematic diagram of an MTBE deep desulfurization device proposed by the present invention;

[0030] Figure 5 In the present invention Figure 4 is a partial enlarged schematic diagram;

[0031] Figure 6 is a three-dimensional structural schematic diagram of the cleaning component, hollow shaft, spiral blade, upper spray pipe, lower spray pipe and internal gear disc parts proposed by the present invention;

[0032] Figure 7 is a structural schematic diagram of the external gear disc, ratchet, ratchet pawl and spring parts proposed by the present invention;

[0033] Figure 8 is a partial sectional view of the hollow shaft part proposed by the present invention.

[0034] In the figure: 1, mounting plate; 11, support leg; 12, pallet; 2, tank body; 21, first filter plate; 22, mesh plate; 23, feed pipe; 231, feed valve; 24, liquid inlet pipe; 25, recovery tank; 251, drainage pipe; 252, return pipe; 253, second filter plate; 254, sealing plate; 26, waste bin; 261, discharge pipe; 262, discharge valve; 263, outlet pipe; 27, mesh cylinder; 271, support frame; 28, rotating shaft; 281, stirring rod; 29, retaining ring; 3, hollow shaft; 31, spiral blade; 32, lower spray pipe; 33, scraping bar; 34, internal gear disc; 341, driving gear; 35, first transfer pump; 351, transfer pipe; 352, upper spray pipe; 353, liquid storage tank; 36, second transfer pump; 361, extraction pipe; 362, branch pipe; 4, motor; 41, driving gear; 42, driven gear; 43, external gear disc; 44, ratchet; 441, pawl. Specific implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0037] Embodiment 1

[0038] Refer to Figures 1 - 8, an MTBE deep desulfurization device, comprising a mounting plate 1, a support plate 12, a tank body 2, a mesh cylinder 27, a waste bin 26, a hollow shaft 3, a first filter plate 21, a mesh plate 22 and a feed pipe 23. The tank body 2 is fixedly installed on the mounting plate 1. A plurality of support legs 11 are fixedly installed on the bottom side of the mounting plate 1. The support plate 12 is fixedly installed on the plurality of support legs 11. The top side of the first filter plate 21 is spherical and fixedly installed on the inner side wall of the tank body 2. The mesh cylinder 27 is fixedly installed at the central position on the top side of the first filter plate 21. The hollow shaft 3 is rotatably installed at the central position inside the tank body 2 and is rotationally connected to the first filter plate 21. A plurality of through holes are provided on the hollow shaft 3. The mesh plate 22 is fixedly installed on the inner side wall of the tank body 2 and is fixedly connected to the top side of the first filter plate 21. The mesh plate 22 is arranged in a funnel shape. A plurality of upper spray pipes 352 communicating with the hollow shaft 3 are radially fixedly installed on the hollow shaft 3. Two circular blocks are hermetically and rotatably installed inside the hollow shaft 3. A first transfer pump 35 and a liquid storage tank 353 are fixedly installed on the top side of the support plate 12. The water inlet of the first transfer pump 35 communicates with the liquid storage tank 353. The water outlet of the first transfer pump 35 is connected to a transfer pipe 351. The transfer pipe 351 is fixedly connected to the two circular blocks. The top end of the transfer pipe 351 extends to the top side of the upper circular block and is in a communicating state with the plurality of upper spray pipes 352 through the inner cavity of the hollow shaft 3, capable of transporting solutions such as desulfurizing agents into the tank body 2 by spraying. The first transfer pump 35 is provided with a second transfer pump 36 in a series connection manner with a drive shaft on the top side. The water inlet of the second transfer pump 36 is connected to a extraction pipe 361 extending to the lowest point position inside the tank body 2. A branch pipe 362 is connected to the extraction pipe 361. A control valve is arranged on the branch pipe 362. The water outlet of the second transfer pump 36 extends to the top side of the lower circular block and is fixedly connected to the lower circular block. A plurality of lower spray pipes 32 are radially fixedly installed on the hollow shaft 3, capable of transporting the processed and filtered MTBE solution back into the tank body 2 for desulfurization operation. It can not only flow out through the through holes and act with the activated carbon packing again, but also be sprayed from below the desulfurizing agent spraying position by spraying, thus achieving the effect of deep desulfurization;

[0039] A motor 4 is fixedly installed on the top side of the support plate 12. A drive gear 41 is fixedly sleeved on the output shaft of the motor 4. The bottom end of the hollow shaft 3 extends below the tank body 2 and is fixedly sleeved with a driven gear 42. The drive gear 41 meshes with the driven gear 42, capable of providing driving force for the hollow shaft 3;

[0040] A plurality of scraping bars 33 are fixedly installed on the hollow shaft 3. The outer sides of the plurality of scraping bars 33 are in contact with the inner side wall of the tank body 2 and the top side of the mesh plate 22, capable of controlling the scraping bars 33 to clean the inner side wall of the tank body 2 and the mesh plate 22 as the hollow shaft 3 rotates, which can not only avoid material residue on the inner wall of the tank body 2 but also avoid the phenomenon of blockage of the mesh plate 22;

[0041] A support frame 271 is fixedly installed on the outer side of the mesh cylinder 27. A plurality of rotating shafts 28 are rotatably installed on the support frame 271. A plurality of flat stirring rods 281 are radially and fixedly installed on the plurality of rotating shafts 28. The upper and lower surfaces of the stirring rods 281 are both inclined. A spiral blade 31 is fixedly installed on the hollow shaft 3. When the rotating shafts 28 and the hollow shaft 3 rotate, it can control the plurality of stirring rods 281 and the spiral blade 31 to perform the turning operation of the activated carbon particles. During the turning process, the friction between the activated carbon particles will cause the precipitates or crystals adhered to the activated carbon surface due to sulfur adsorption to fall off from the activated carbon, effectively avoiding the situation that the pores on the activated carbon are blocked and reducing its sulfur adsorption capacity, so that the activated carbon particles can perform better desulfurization operation on the MTBE solution.

[0042] In this embodiment, transmission gears 341 are fixedly sleeved on the tops of the plurality of rotating shafts 28. An internal gear disk 34 is fixedly installed on the side of the plurality of scraping bars 33 close to the mesh cylinder 27. The plurality of transmission gears 341 are all meshed with the internal gear disk 34. When the hollow shaft 3 rotates, it can drive the internal gear disk 34 to rotate through the scraping bars 33, so that the rotation of the rotating shafts 28 can be controlled under the cooperation of the transmission gears 341.

[0043] In this embodiment, a recovery box 25 is fixedly installed on the bottom side of the mounting plate 1. A discharge port is opened on the side of the recovery box 25 away from the tank body 2. A sealing plate 254 is hermetically and slidably installed in the discharge port. A second filter plate 253 is fixedly installed in the recovery box 25 in an inclined shape. A drainage pipe 251 and a return pipe 252 are fixedly installed on the side of the recovery box 25 close to the tank body 2 from top to bottom in sequence. The two ends of the drainage pipe 251 are respectively located on the top sides of the first filter plate 21 and the second filter plate 253, and the two ends of the return pipe 252 are respectively located on the bottom sides of the first filter plate 21 and the second filter plate 253. It can separate the solid debris formed during the desulfurization operation through the mesh plate 22 and recover it into the recovery box 25, and at the same time, it can filter out the solution therein and make it flow back into the tank body 2 under the cooperation of the second filter plate 253.

[0044] In this embodiment, a waste bin 26 is fixedly installed on the top side of the mounting plate 1. An inclined discharge pipe 261 is connected between the waste bin 26 and the tank body 2, and a discharge valve 262 is arranged on the discharge pipe 261. When the activated carbon particles outside the mesh cylinder 27 surge upward, it can guide them into the waste bin 26 for storage.

[0045] In this embodiment, a feed pipe 23 communicating with the tank body 2 is fixedly installed on the tank body 2. A feed valve 231 is arranged on the feed pipe 23, and the top end of the feed pipe 23 is in a funnel shape, which is convenient for adding activated carbon filler into the feed pipe 23. A liquid inlet pipe 24 communicating with the tank body 2 is arranged at a position below the mounting plate 1 on the outer side of the tank body 2, which is convenient for filling the solution to be desulfurized into the tank body 2.

[0046] Example Two

[0047] On the basis of Example One, with reference to Figure 3 , Figure 5 and Figure 7 , an external gear disk 43, a ratchet 44, a ratchet pawl 441 and a spring are further arranged between the pallet 12 and the tank body 2. Among them, the external gear disk 43 is rotatably installed at the bottom of the tank body 2, a ratchet 44 is fixedly sleeved on the driving shaft of the second delivery pump 36, the ratchet pawl 441 is hinged and installed on the inner wall of the external gear disk 43, the ratchet pawl 441 is adapted to the ratchet 44, a same spring is fixedly installed between the ratchet pawl 441 and the inner wall of the external gear disk 43, and the external gear disk 43 is meshed with the driven gear 42, which can provide driving force for the first delivery pump 35 and the second delivery pump 36 while the motor 4 drives the hollow shaft 3 to rotate, without additionally providing power for the first delivery pump 35 and the second delivery pump 36. At the same time, the working consistency of the motor 4 with the first delivery pump 35 and the second delivery pump 36 can be ensured, and with the cooperation of the arranged ratchet 44, ratchet pawl 441, spring and external gear disk 43, the first delivery pump 35 and the second delivery pump 36 can be driven to work together when the motor 4 rotates forward, while the first delivery pump 35 and the second delivery pump 36 will not be driven to reverse during the unloading of the activated carbon filler.

[0048] Example Three

[0049] On the basis of Example Two, with reference to Figure 3 , the same retaining ring 29 is fixedly installed on the sides of the plurality of scraping bars 33 close to each other. The top side of the retaining ring 29 is arranged in a concave shape, and the retaining ring 29 is located above the transmission gear 341 and the internal gear disk 34, aiming to provide shielding protection for the transmission gear 341 and the internal gear disk 34, so as to prevent the desulfurizer and MTBE solution from being directly sprayed on the transmission gear 341 and the internal gear disk 34.

[0050] This embodiment also provides a working method of the MTBE deep desulfurization device, including the following steps:

[0051] S1: Raw material preparation and initial spraying: Open the feed valve 231, add an appropriate amount of activated carbon filler into the tank body 2 through the feed pipe 23, then close the feed valve 231. Next, introduce the MTBE solution to be treated into the tank body 2 through the liquid inlet pipe 24. After completion, close the liquid inlet pipe 24, start the second delivery pump 36, transport the MTBE solution at the bottom of the tank body 2 to the hollow shaft 3, and make it spray out from the through holes and evenly spray it on the activated carbon filler through a plurality of lower spray pipes 32. This operation can significantly increase the contact area between the MTBE solution and the activated carbon filler per unit time, thereby effectively improving the desulfurization efficiency.

[0052] S2: Stirring and desulfurizer addition: Start the motor 4. The motor 4 drives the hollow shaft 3 to rotate through the driving gear 41 and the driven gear 42. At this time, multiple scraping bars 33 will clean the inner side wall of the tank body 2 and the top side of the screen plate 22 to prevent material adhesion. Meanwhile, the internal gear disk 34 and multiple transmission gears 341 work together to drive multiple rotating shafts 28 to rotate, causing multiple stirring rods 281 to turn the activated carbon filler outside the mesh cylinder 27 upward; while the spiral blade 31 on the hollow shaft 3 turns the activated carbon filler in the mesh cylinder 27 downward, ensuring that the activated carbon filler in the tank body 2 is always in a tumbling state, further improving the desulfurization efficiency of the MTBE solution. At the same time, start the first transfer pump 35 to transport the desulfurizer in the liquid storage tank 353 to the upper spray pipe 352 and spray it out to accelerate the desulfurization reaction.

[0053] S3: Circulating desulfurization, impurity treatment and product discharge: During the desulfurization process, the second transfer pump 36 continuously transports the solution upward in a cycle to achieve deep desulfurization. The solid debris generated is intercepted above the filter plate 21 under the filtering action of the screen plate 22 and enters the recovery tank 25 under the action of the solution flow and its own weight. In the recovery tank 25, the second filter plate 253 will filter the solution again, causing the solution to flow back to the tank body 2, while the solid debris is collected. The solution after desulfurization is discharged through the branch pipe 362. In addition, during the desulfurization process, a part of the solution can be taken out from the branch pipe 362 for detection at irregular intervals. When the activated carbon completes its adsorption mission, control the motor 4 to rotate in the reverse direction to change the turning direction of the activated carbon particles inside and outside the mesh cylinder 27, open the discharge valve 262, and introduce the activated carbon filler into the waste bin 26 through the discharge pipe 261 for temporary storage.

[0054] It should be noted that when selecting a desulfurizer, a desulfurizer that does not affect the desulfurization effect of activated carbon adsorption should be selected. For example, the iron oxide desulfurizer, which has iron oxide as the main active ingredient, is processed and formed by adding different catalysts, and its appearance is mostly brownish-yellow granular. It has the advantages of large sulfur capacity, high purification degree, high strength, no sludging when encountering water, easy regeneration, etc. It can also highly remove hydrogen sulfide under anaerobic conditions and has a certain removal effect on organic sulfur such as mercaptans and most nitrogen oxides. The new type of iron oxide desulfurizer such as the HYF series has higher desulfurization accuracy, faster reaction speed, larger working sulfur capacity, better strength and water resistance compared with ordinary products. It can be used in combination with activated carbon. First, the iron oxide desulfurizer is used for rough desulfurization to remove most of the hydrogen sulfide, and then activated carbon is used for fine desulfurization to reduce the sulfide concentration at the gas outlet.

[0055] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here.

Claims

1. An MTBE deep desulfurization device, characterized in that, It includes a mounting plate (1), a pallet (12), a tank body (2), a mesh cylinder (27), a driving assembly, a cleaning assembly, a stirring assembly, a waste bin (26), a first collection assembly, a second collection assembly, a hollow shaft (3), a first filter plate (21), a mesh plate (22), a feeding assembly, a transmission assembly, and a feeding pipe (23); The tank body (2) is fixedly installed on the mounting plate (1). A plurality of support legs (11) are fixedly installed on the bottom side of the mounting plate (1). The pallet (12) is fixedly installed on the plurality of support legs (11). The top side of the first filter plate (21) is spherical and fixedly installed on the inner side wall of the tank body (2). The mesh cylinder (27) is fixedly installed at the center position on the top side of the first filter plate (21). The hollow shaft (3) is rotatably installed at the center position inside the tank body (2) and is rotatably connected to the first filter plate (21). A plurality of through holes are provided on the hollow shaft (3). The mesh plate (22) is fixedly installed on the inner side wall of the tank body (2) and is fixedly connected to the top side of the first filter plate (21). The mesh plate (22) is in a funnel shape. The driving assembly and the feeding assembly are both arranged on the pallet (12), and both the driving assembly and the feeding assembly are connected to the hollow shaft (3). The cleaning assembly is arranged inside the tank body (2) and is connected to the hollow shaft (3). The stirring assembly is arranged on both the inner and outer sides of the mesh cylinder (27) and is connected to the hollow shaft (3). The transmission assembly is arranged on the stirring assembly and the cleaning assembly. The first collection assembly and the second collection assembly are respectively arranged on the bottom side and the top side of the mounting plate (1) and are respectively connected to the tank body (2); A feeding pipe (23) communicating with the tank body (2) is fixedly installed on the tank body (2). A feeding valve (231) is arranged on the feeding pipe (23), and the top end of the feeding pipe (23) is in a funnel shape. A liquid inlet pipe (24) communicating with the tank body (2) is arranged at a position below the mounting plate (1) on the outer side of the tank body (2).

2. The MTBE deep desulfurization device according to claim 1, wherein: The feeding assembly includes a first transfer pump (35), a liquid storage tank (353), a transfer pipe (351), and a plurality of upper spray pipes (352). A plurality of upper spray pipes (352) communicating with the hollow shaft (3) are radially and fixedly installed on the hollow shaft (3). Two circular blocks are rotatably and sealingly installed inside the hollow shaft (3). The first transfer pump (35) and the liquid storage tank (353) are fixedly installed on the top side of the pallet (12). The water inlet of the first transfer pump (35) is communicated with the liquid storage tank (353). The water outlet of the first transfer pump (35) is connected to the transfer pipe (351). The transfer pipe (351) is fixedly connected to the two circular blocks, and the top end of the transfer pipe (351) extends to the top side of the upper circular block and is in a communication state with the plurality of upper spray pipes (352) through the inner cavity of the hollow shaft (3); The feeding assembly further includes a second transfer pump (36), a suction pipe (361) and a branch pipe (362). The second transfer pump (36) is arranged on the top side of the first transfer pump (35) in a series connection manner through a drive shaft. The water inlet of the second transfer pump (36) is connected with a suction pipe (361) extending to the lowest point position inside the tank body (2). A branch pipe (362) is connected to the suction pipe (361), and a control valve is arranged on the branch pipe (362). The water outlet of the second transfer pump (36) extends to the top side of the lower circular block and is fixedly connected with the lower circular block. A plurality of lower spray pipes (32) are radially and fixedly installed on the hollow shaft (3).

3. The MTBE deep desulfurization device according to claim 1, wherein: The drive assembly includes a motor (4), a drive gear (41) and a driven gear (42). The motor (4) is fixedly installed on the top side of the support plate (12). The drive gear (41) is fixedly sleeved on the output shaft of the motor (4). The bottom end of the hollow shaft (3) extends below the tank body (2) and is fixedly sleeved with the driven gear (42). The drive gear (41) meshes with the driven gear (42).

4. An MTBE deep desulfurization device according to any one of claims 2 and 3, characterized in that: The drive assembly further includes an external gear disc (43), a ratchet wheel (44), a ratchet pawl (441) and a spring. The external gear disc (43) is rotatably installed at the bottom of the tank body (2). The ratchet wheel (44) is fixedly sleeved on the drive shaft of the second transfer pump (36). The ratchet pawl (441) is hingedly installed on the inner wall of the external gear disc (43). The ratchet pawl (441) is adapted to the ratchet wheel (44). The same spring is fixedly installed between the ratchet pawl (441) and the inner wall of the external gear disc (43). And the external gear disc (43) meshes with the driven gear (42).

5. The MTBE deep desulfurization device according to claim 1, characterized in that: The cleaning assembly includes a plurality of scraping bars (33). A plurality of scraping bars (33) are fixedly installed on the hollow shaft (3). The outer sides of the plurality of scraping bars (33) are in contact with the inner side wall of the tank body (2) and the top side of the mesh plate (22).

6. The MTBE deep desulfurization device according to claim 1, wherein: The stirring and mixing assembly includes a spiral blade (31), a plurality of rotating shafts (28) and a plurality of stirring rods (281). A support frame (271) is fixedly installed on the outer side of the mesh cylinder (27). A plurality of rotating shafts (28) are rotatably installed on the support frame (271). A plurality of flat-shaped stirring rods (281) are radially and fixedly installed on the plurality of rotating shafts (28). And the upper and lower surfaces of the stirring rods (281) are both inclined. The spiral blade (31) is fixedly installed on the hollow shaft (3).

7. An MTBE deep desulfurization device according to any one of claims 5 and 6, characterized in that: The transmission assembly includes an internal gear disc (34) and a plurality of transmission gears (341). The transmission gears (341) are fixedly sleeved on the top ends of the plurality of rotating shafts (28). The same internal gear disc (34) is fixedly installed on the side of the plurality of scraping bars (33) close to the mesh cylinder (27). The plurality of transmission gears (341) are all meshed with the internal gear disc (34).

8. An MTBE deep desulfurization device according to claim 1, characterized in that: The first collection component includes a recycling bin (25), a drainage pipe (251), a return pipe (252), a sealing plate (254) and a second filter plate (253). A recycling bin (25) is fixedly installed on the bottom side of the mounting plate (1). An outlet is formed on one side of the recycling bin (25) away from the tank body (2). A sealing plate (254) is hermetically and slidably installed in the outlet. A second filter plate (253) is fixedly installed in the recycling bin (25) in an inclined shape. A drainage pipe (251) and a return pipe (252) are fixedly installed on the side of the recycling bin (25) close to the tank body (2) from top to bottom in sequence. Two ends of the drainage pipe (251) are respectively located on the top sides of the first filter plate (21) and the second filter plate (253). Two ends of the return pipe (252) are respectively located on the bottom sides of the first filter plate (21) and the second filter plate (253).

9. An MTBE deep desulfurization device according to claim 1, characterized in that: The second collection component includes a waste bin (26), a discharge pipe (261) and a discharge valve (262). A waste bin (26) is fixedly installed on the top side of the mounting plate (1). An inclined discharge pipe (261) is connected between the waste bin (26) and the tank body (2), and a discharge valve (262) is arranged on the discharge pipe (261).

10. A working method of an MTBE deep desulfurization device according to any one of claims 1 to 9, characterized in that, It includes the following steps: S1: Open the feed valve (231) and introduce an appropriate amount of activated carbon filler into the tank body (2) from the feed pipe (23), then close the feed valve (231). Introduce the MTBE solution to be treated into the tank body (2) through the liquid inlet pipe (24) and close the liquid inlet pipe (24). Then, use the second delivery pump (36) to deliver the MTBE solution at the inner wall position of the bottom of the tank body (2) into the hollow shaft (3) and make it spray out from the through holes, and spray it onto the activated carbon filler through a plurality of lower spray pipes (32) in a spraying manner, so as to increase the contact area between the MTBE solution and the activated carbon filler per unit time, and further improve the desulfurization efficiency; S2: Then start the motor (4). The motor (4) controls the rotation of the hollow shaft (3) through the driving gear (41) and the driven gear (42), so that a plurality of scraping bars (33) scrape the inner side wall of the tank body (2) and the top side of the mesh plate (22). At the same time, the internal gear disk (34) cooperates with a plurality of transmission gears (341) to control the rotation of a plurality of rotating shafts (28), so as to control a plurality of stirring rods (281) to turn up the activated carbon filler outside the mesh cylinder (27). At the same time, under the action of the hollow shaft (3), the spiral blades (31) can be controlled to turn down the activated carbon filler in the mesh cylinder (27), so that the activated carbon filler in the tank body (2) remains in a tumbling state, thereby further improving the desulfurization efficiency of the MTBE solution. Start the first delivery pump (35), which can deliver the desulfurizing agent in the liquid storage tank (353) upward to the position of the upper spray pipe (352) and spray it out through the upper spray pipe (352), so as to further increase the desulfurization rate of the MTBE solution; S3: The solution in the desulfurization process is circulated upward by the second transfer pump (36) for desulfurization operation, so as to achieve the effect of deep desulfurization. During the desulfurization operation, the solid debris generated will be filtered out above the first filter plate (21) under the action of the mesh plate (22), and then can enter the recovery box (25) under the guidance of the solution flow and factors such as its own weight. After entering the recovery box (25), it will be filtered again under the action of the second filter plate (253), so that the solution flows back into the tank body (2), while the solid debris is collected in the recovery box (25). The solution after desulfurization can be discharged through the branch pipe (362). At the same time, during the desulfurization process, part of the solution can be taken out from the position of the branch pipe (362) at irregular intervals for detection. At the same time, after the activated carbon reaches the saturated adsorption state, the turning direction of the activated carbon particles inside and outside the mesh cylinder (27) can be adjusted by controlling the reverse rotation of the motor (4). At this time, the discharge valve (262) is opened, and when the activated carbon filler passes through the inlet of the discharge pipe (261), it can be guided into the waste bin (26) for temporary storage.

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