A fluidized bed reaction equipment for cleaning wastewater from tank trucks

Abstract

The present invention relates to the technical field of sewage treatment, and specifically to a fluidized bed reaction device for cleaning wastewater from a tank truck, comprising a bottom plate, a bed body and a grille, wherein the bed body is installed on the upper side of the bottom plate, a filter screen is installed on a reaction chamber, a water inlet and an air inlet are provided on the bottom plate, a drain outlet and an air outlet are provided on the upper side of the bed body, a bed layer is installed in the bottom plate, the bed layer is located on the upper side of the water inlet and the air inlet, a plurality of through holes are evenly distributed on the bed layer, a regeneration component is installed in the bed body, a regeneration chamber is provided in the regeneration component, a plurality of hot air pipes are installed on the lower side of the regeneration chamber, the two ends of the plurality of hot air pipes are respectively connected to the air inlet and the inside of the regeneration chamber, a heating core is further installed between the plurality of hot air pipes and the air inlet, so as to avoid the problem that the catalyst and adsorbent in the wastewater fluidized bed reactor gradually lose their activity after long-term operation, resulting in a decrease in wastewater treatment efficiency, and ensure the cleaning efficiency of the wastewater fluidized bed reaction device.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to a fluidized bed reaction device for tank truck washing wastewater. Background Art

[0002] Tank trucks play many important roles in the fluidized bed reaction process of cleaning wastewater, including wastewater collection, transportation, storage and reaction material transportation. Wastewater fluidized bed reaction equipment is usually used to treat organic matter, heavy metals, nitrogen, phosphorus and other pollutants in wastewater, and convert them into harmless or recyclable substances through oxidation, reduction, precipitation and other reactions, so as to achieve wastewater treatment and resource utilization. Wastewater fluidized bed reaction equipment includes fluidized bed reactor, gas distribution system, circulation system, heating or cooling system and control system, among which the fluidized bed reactor is the core component of the equipment, which is usually a cylindrical container filled with fluidized medium, such as sand or granular activated carbon; after pretreatment, the wastewater is sprayed into the bottom of the reactor by a nozzle or pipe and contacts with the fluidized medium and reacts; the gas distribution system is responsible for providing an appropriate amount of gas to the reactor, The wastewater reaction process usually requires the injection of gas into the reactor to promote the reaction. The gas can be air, oxygen or other gases, which are used to provide oxygen to promote the oxidation reaction; the circulation system includes a pump and a pipeline network, which is used to extract the medium from the bottom and re-inject it into the top of the reactor to maintain the fluidized state. During the wastewater reaction process, the medium in the fluidized bed needs to remain in a flowing state to ensure sufficient mixing and reaction; according to the reaction requirements, the wastewater fluidized bed reaction equipment requires a heating or cooling system. The heating system can accelerate the reaction rate by providing thermal energy to the wastewater or reaction medium, while the cooling system can be used to control the reaction temperature and prevent overheating; the control system is used to monitor and adjust various parameters of the wastewater fluidized bed reaction equipment, such as flow, temperature, pressure, etc. These systems can automate the operation of the equipment, improve operating efficiency and ensure safe operation.

[0003] The wastewater generated by artificial board manufacturers during the production process usually contains high concentrations of organic matter. When the wastewater fluidized bed reactor treats such wastewater, the catalyst and adsorbent in the conventional wastewater fluidized bed reactor will gradually lose their activity after working for a long time, resulting in a decrease in wastewater treatment efficiency. In the prior art, the inactivated fluidized medium is generally replaced regularly to restore the reaction efficiency and equipment performance, which increases the equipment operating costs.

[0004] In view of the above problems, the prior art has proposed some solutions. For example, Chinese patent application number: CN201811025931.1 discloses a solid acid alkylation reaction method, an alkylation reaction device and a system. The invention adopts a moving bed or a fluidized bed. In a vertical or inclined moving bed reactor, the catalyst flows from top to bottom by gravity; in the fluidized bed, the bed is composed of catalysts, and gas or liquid is introduced into the bottom through a distributor plate. The gas passes through the solid particle bed at a sufficient rate to exceed the settling velocity of the particles, so that the catalyst is suspended and fluidized, which is beneficial to the transfer of the catalyst, and the separation of reaction and regeneration is achieved through a separation device and a regeneration device. At the same time, the flow of the catalyst The device is powered to realize continuous operation. The regeneration device adopts a method of implementing gas phase hydrogenation regeneration and regeneration medium flushing regeneration in stages, which is beneficial to improving the regeneration efficiency and slowing down the deactivation of the catalyst, thereby reducing the frequency and total amount of deep regeneration of the catalyst. However, in the gas phase hydrogenation regeneration link of the above scheme, it is necessary to perform liquid-solid separation on the logistics after the alkylation reaction of the alkylation reaction raw material and the solid acid catalyst, separate the liquid phase logistics and the solid acid catalyst to be regenerated, and then regenerate the solid acid catalyst, which increases the operating cost of the equipment. In addition, the adsorbent cannot be cleaned in the device, so the above scheme is not suitable for regenerating the catalyst and the adsorbent in the wastewater fluidized bed reaction equipment.

[0005] Therefore, in order to solve the problem, a fluidized bed reaction equipment for tank truck cleaning wastewater is proposed. Summary of the invention

[0006] The object of the present invention is to provide a fluidized bed reaction device for cleaning wastewater from a tank truck, so as to solve the problem that the catalyst and adsorbent in the wastewater fluidized bed reactor gradually lose their activity after working for a long time, resulting in a decrease in wastewater treatment efficiency.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A fluidized bed reaction device for cleaning wastewater from a tank truck comprises a base plate, a bed body and a grid, wherein the bed body is installed on the upper side of the base plate, the bed body is cylindrical, the base plate is conical, and the large end is located on the upper side, a reaction chamber is arranged in the bed body, the filter screen is arranged on the reaction chamber, a water inlet and an air inlet are provided on the base plate, a drain outlet and an exhaust outlet are provided on the upper side of the bed body, a bed layer is installed in the base plate, the bed layer is located on the upper side of the water inlet and the air inlet, a plurality of through holes are evenly distributed on the bed layer, the inner wall of the base plate and the bed layer are combined into a feeding chamber, a regeneration component is installed in the bed body, a regeneration chamber is arranged in the regeneration component, a plurality of hot air pipes are installed on the lower side of the regeneration chamber, the two ends of the plurality of hot air pipes are respectively connected to the air inlet and the inside of the regeneration chamber, and a heating core is also installed between the plurality of hot air pipes and the air inlet.

[0009] When the wastewater fluidized bed reaction equipment is working, wastewater is introduced into the water inlet, oxygen is introduced into the air inlet, and a fluidized medium is added into the reaction chamber. The fluidized medium includes a catalyst and an adsorbent. The wastewater and oxygen are mixed in the feed chamber. When the wastewater and oxygen fill the feed chamber, they enter the reaction chamber through the through hole and impact the fluidized medium, so that the fluidized medium produces a fluidization effect. During the fluidization process, organic matter in the wastewater reacts with oxygen, and the fluidized medium absorbs organic matter, thereby achieving a wastewater cleaning and filtering effect. At the same time, oxygen is introduced into the hot air pipe, and the oxygen is heated by the heating core and then introduced into the regeneration chamber. At this time, the flow rate in the regeneration chamber will be larger than that in the reaction chamber. When the fluidized medium adsorbs too much organic matter, it will precipitate to the lower side of the reaction chamber. At this time, the fluidized medium on the lower side of the reaction chamber will be sucked into the regeneration chamber. At the same time, the high-temperature oxygen in the regeneration chamber reacts with the organic matter on the surface of the fluidized medium. After the reaction in the regeneration chamber, the fluidized medium will lose weight and be refilled into the reaction chamber to complete the regeneration of the fluidized medium. This avoids the problem that the catalyst and adsorbent in the wastewater fluidized bed reactor will gradually lose activity after working for a long time, resulting in a decrease in wastewater treatment efficiency, and ensures the cleaning efficiency of the wastewater fluidized bed reaction equipment.

[0010] Optionally, the regeneration components include physical regeneration, chemical regeneration and ultrasonic regeneration, and the above three components can regenerate the fluidized medium. The physical regeneration cleans the catalyst surface or removes organic residues to restore the activity of the catalyst by means of high temperature, gas flow or solvent flow, but the physical regeneration cannot completely remove the organic residues and the regeneration effect is unstable; chemical regeneration uses chemical reagents or solutions to treat the catalyst, and the organic matter reacts chemically with the catalyst surface to remove the organic residues. However, chemical regeneration requires the use of chemical reagents, which is easy to affect the environment and the regeneration process is complicated; ultrasonic regeneration uses the energy of ultrasonic vibration to treat the catalyst, and the organic matter is peeled off or decomposed from the catalyst surface by the action of sound waves. However, ultrasonic regeneration requires special ultrasonic equipment and is relatively expensive. Therefore, the above three regeneration components are not preferred solutions of the present invention.

[0011] Preferably, the regeneration component includes a partition, a support plate and a heating core, the bed body is coaxially provided with a partition, the partition is cylindrical, the bed body and the partition are connected by a plurality of support plates, the regeneration chamber is composed of the inner wall of the bed body and the partition, the upper and lower ends of the regeneration chamber are respectively provided with a regeneration outlet and a regeneration feed port, and the regeneration outlet and the regeneration feed port are both connected to the reaction chamber, the heating core is annularly installed on the lower side of the hot air pipe, the thermal regeneration temperature of the fluidized medium is usually between 500°C and 800°C, this temperature range refers to ensuring a sufficiently high temperature to effectively oxidize or pyrolyze the residual on the surface of the medium The organic matter in the regeneration chamber can be completely removed from the medium. When the oxygen is heated to 500℃-800℃ by the heating core, it flows into the regeneration chamber through the hot air pipe. When the fluidized medium adsorbs too much organic matter, it will precipitate to the lower side of the reaction chamber. The fluidized medium on the lower side of the reaction chamber will be sucked into the regeneration chamber. At this time, the high-temperature oxygen in the regeneration chamber will flush the fluidized medium into the regeneration chamber and react with the organic matter on the surface of the fluidized medium, avoiding the problem that the catalyst and adsorbent in the wastewater fluidized bed reactor will gradually lose their activity after long-term work, resulting in a decrease in wastewater treatment efficiency, and ensuring the cleaning efficiency of the wastewater fluidized bed reaction equipment.

[0012] Preferably, a No. 1 mixing surface and a No. 2 mixing surface are provided on the inner wall of the regeneration chamber, the No. 1 mixing surface is located on the outer circle of the inner wall of the regeneration chamber, and the No. 2 mixing surface is located on the inner circle of the inner wall of the regeneration chamber. A plurality of raised rings are provided on both the No. 1 mixing surface and the No. 2 mixing surface, and the raised rings on the No. 1 mixing surface and the No. 2 mixing surface are installed alternately up and down. When the fluidized medium enters the regeneration chamber, the wastewater and the high-temperature oxygen push the fluidized medium to flow on the No. 1 mixing surface and the No. 2 mixing surface. When the fluidized medium contacts the raised rings, it will be guided by the raised rings, so that the fluidized medium rolls irregularly in the regeneration chamber, thereby avoiding the problem that a part of the fluidized medium in the wastewater fluidized bed reactor is not in contact with the high-temperature oxygen due to uneven mixing, thereby reducing the regeneration reaction efficiency of the fluidized medium, thereby ensuring the efficiency of the regeneration reaction of the fluidized medium.

[0013] Preferably, the bed is conical, with the larger end located at the lower side, the upper end of the bed is flush with the lower end of the partition, and the lower end of the bed is flush with the upper end of the bottom plate. When the fluidized medium adsorbs too much organic matter, it will settle to the lower side of the reaction chamber. When the fluidized medium contacts the bed, it flows to the regeneration feed port through the side diversion of the bed, avoiding the problem that part of the fluidized medium accumulates in the center of the bed and needs to roll multiple times to enter the regeneration chamber, thereby ensuring the regeneration rate of the fluidized medium.

[0014] Preferably, a plurality of drainage grooves are provided on the bed layer, and the plurality of drainage grooves are evenly distributed on the outer circle of the bed layer. The circumferential cross-section of the plurality of drainage grooves is in the shape of an arc, and the extension line of the upper end of the arc points to the regeneration chamber. The two ends of the drainage grooves are respectively connected with the reaction chamber and the feed chamber. Most of the wastewater enters the reaction chamber through the through hole, and a part of it enters through the drainage groove. The wastewater entering through the drainage groove will preferentially enter the regeneration feed port. In this process, the wastewater will drive the fluidized medium at the lower end of the regeneration feed port into the regeneration chamber, thereby increasing the rate at which the fluidized medium to be regenerated enters the regeneration chamber, and further ensuring the efficiency of the fluidized medium regeneration reaction.

[0015] Preferably, a nozzle is installed at the upper end of the hot air pipe, and the nozzle is rotatably connected to the hot air pipe. The nozzle is in a cone shape, and the large end is located on the upper side. A plurality of air passages are opened on the circumference of the nozzle, and the plurality of air passages are spiral. When the heated oxygen flows to the nozzle through the hot air pipe, the high-temperature oxygen flows into the regeneration chamber through the air passage. In this process, since the air passage is spiral, when the high-temperature oxygen flows into the regeneration chamber through the air passage, the nozzle will be subjected to a reverse thrust of the high-temperature oxygen, so that the nozzle rotates when releasing the high-temperature oxygen. At this time, the high-temperature oxygen will point to all directions inside the regeneration chamber, thereby avoiding the problem that the high-temperature oxygen has too single flow direction when entering the regeneration chamber, resulting in a decrease in the contact effect between the high-temperature oxygen and the fluidized medium, thereby ensuring the efficiency of the fluidized medium regeneration reaction.

[0016] Preferably, a transition section No. 1 and a transition section No. 2 are respectively provided at the upper and lower ends of the regeneration chamber, and the circumferential cross-sections of the transition section No. 1 and the transition section No. 2 are arc-shaped, and the transition section No. 1 and the transition section No. 2 are both located on the inner wall of the main diameter of the regeneration chamber. Before passing through the regeneration feed port, the fluidized medium to be regenerated is guided by the transition section No. 1 to reduce the flow resistance of the solid and liquid when entering the regeneration feed port. Furthermore, the regenerated fluidized medium flows out through the regeneration discharge port and is guided into the reaction chamber by the transition section No. 2, thereby avoiding the flow resistance of the fluidized medium when entering and exiting the regeneration chamber and ensuring the rate of the fluidized medium when entering and exiting the regeneration chamber.

[0017] Preferably, the No. 1 mixing surface and the No. 2 mixing surface are made of highly wear-resistant and highly corrosion-resistant materials, including at least any one of stainless steel, nickel-based alloy, titanium alloy and fiberglass. Metals placed in high-organic wastewater for a long time are prone to metal corrosion, which further causes equipment damage. The above metals have the characteristics of high wear resistance and high corrosion resistance, which avoids equipment damage and also avoids the problem of wear of the No. 1 mixing surface and the No. 2 mixing surface caused by fluidized medium rolling in the No. 1 mixing surface and the No. 2 mixing surface, thereby ensuring the service life of the wastewater fluidized bed reaction equipment.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention sets a regeneration component on the wastewater fluidized bed reaction equipment. When the fluidized medium adsorbs too much organic matter, it will precipitate to the lower side of the reaction chamber. At this time, the fluidized medium on the lower side of the reaction chamber will be sucked into the regeneration chamber. At the same time, the high-temperature oxygen in the regeneration chamber reacts with the organic matter on the surface of the fluidized medium. After the fluidized medium reacts in the regeneration chamber, the weight will be reduced and refilled into the reaction chamber to complete the regeneration of the fluidized medium. This avoids the problem that the catalyst and adsorbent in the wastewater fluidized bed reactor will gradually lose activity after working for a long time, resulting in a decrease in wastewater treatment efficiency, and ensures the cleaning efficiency of the wastewater fluidized bed reaction equipment.

[0020] 2. The present invention provides a No. 1 mixing surface and a No. 2 mixing surface on the inner wall of the regeneration chamber. When the fluidized medium enters the regeneration chamber, the wastewater and the high-temperature oxygen push the fluidized medium to flow on the No. 1 mixing surface and the No. 2 mixing surface. When the fluidized medium contacts the raised ring, it will be guided by the raised ring, so that the fluidized medium rolls irregularly in the regeneration chamber, thereby avoiding the problem that a part of the fluidized medium in the wastewater fluidized bed reactor is not in contact with the high-temperature oxygen due to uneven mixing, thereby reducing the regeneration reaction efficiency of the fluidized medium, thereby ensuring the efficiency of the regeneration reaction of the fluidized medium.

[0021] 3. The present invention has a nozzle rotatably connected to the upper end of the hot air pipe. During the process of the high-temperature oxygen flowing into the regeneration chamber through the airway, since the airway is spiral, when the high-temperature oxygen flows into the regeneration chamber through the airway, the nozzle will be subjected to the reverse thrust of the high-temperature oxygen, so that the nozzle rotates when releasing the high-temperature oxygen. At this time, the high-temperature oxygen will point to various directions inside the regeneration chamber, avoiding the problem of too single flow direction of the high-temperature oxygen when entering the regeneration chamber, resulting in a decrease in the contact effect between the high-temperature oxygen and the fluidized medium, thereby ensuring the efficiency of the regeneration reaction of the fluidized medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural schematic diagram of a fluidized bed reaction device for tank truck washing wastewater according to the present invention;

[0023] Figure 2 For the present invention Figure 1 Sectional view at AA in the middle;

[0024] Figure 3 For the present invention Figure 2 The cross-sectional view at BB in FIG.

[0025] Figure 4 This is a schematic diagram of the structure of the bed layer, heating core, hot air pipe and nozzle in the fluidized bed reaction equipment for cleaning wastewater from a tank truck of the present invention;

[0026] Figure 5It is a cross-sectional view of a bed layer in a fluidized bed reaction device for washing wastewater from a tank truck of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the hot air pipe and the nozzle in the fluidized bed reaction equipment for washing wastewater from a tank truck of the present invention;

[0028] Figure 7 For the present invention Figure 6 Cross-sectional view at CC in FIG.

[0029] Figure 8 This is a flow diagram of the fluidized bed reaction equipment for tank truck washing wastewater of the present invention when it is working;

[0030] In the figure: 1. bed body; 2. bottom plate; 3. bed layer; 401. water inlet; 402. air inlet; 403. feed chamber; 404. reaction chamber; 405. drainage groove; 406. through hole; 407. regeneration chamber; 408. hot air pipe; 409. heating core; 410. partition; 411. support plate; 412. No. 1 mixing surface; 413. No. 2 mixing surface; 414. raised ring; 415. drain outlet; 416. exhaust outlet; 417. regeneration feed port; 418. regeneration discharge port; 501. nozzle; 502. air duct; 503. No. 1 transition section; 504. No. 2 transition section; 505. filter. DETAILED DESCRIPTION

[0031] See also Figures 1 to 8 The present invention provides a fluidized bed reaction equipment for tank truck cleaning wastewater, and the technical scheme is as follows:

[0032] A fluidized bed reaction device for cleaning wastewater from a tank truck, comprising a bottom plate 2, a bed body 1 and a grid, wherein the bed body 1 is installed on the upper side of the bottom plate 2, the bed body 1 is cylindrical, the bottom plate 2 is conical, and the large end is located on the upper side, a reaction chamber 404 is arranged in the bed body 1, a filter screen 505 is arranged on the reaction chamber 404, a water inlet 401 and an air inlet 402 are provided on the bottom plate 2, a drain port 415 and an exhaust port 416 are provided on the upper side of the bed body 1, a bed layer 3 is installed in the bottom plate 2, the bed layer 3 is located on the upper side of the water inlet 401 and the air inlet 402, the bed layer 3 is conical, and the large end is located on the lower side, the upper end of the bed layer 3 is flush with the lower end of the partition 410, the lower end of the bed layer 3 is flush with the upper end of the bottom plate 2, and a plurality of passages are evenly distributed on the bed layer 3 Hole 406, a plurality of drainage grooves 405 are also provided on the bed 3, and the plurality of drainage grooves 405 are evenly distributed on the outer circle of the bed 3. The circumferential cross-section of the plurality of drainage grooves 405 is arc-shaped, and the extension line of the upper end of the arc points to the regeneration chamber 407, and the two ends of the drainage grooves 405 are respectively connected with the reaction chamber 404 and the feed chamber 403, and the bottom plate 2 and the inner wall of the bed 3 are combined into the feed chamber 403. A regeneration assembly is installed in the bed body 1, and a regeneration chamber 407 is arranged in the regeneration assembly. A plurality of hot air pipes 408 are installed on the lower side of the regeneration chamber 407, and the two ends of the plurality of hot air pipes 408 are respectively connected with the air inlet 402 and the inside of the regeneration chamber 407, and a heating core 409 is also installed between the plurality of hot air pipes 408 and the air inlet 402.

[0033] See also Figures 2 to 8The regeneration component includes a partition 410, a support plate 411 and a heating core 409. The partition 410 is coaxially arranged in the bed body 1, and the partition 410 is cylindrical. The bed body 1 and the partition 410 are connected by a plurality of support plates 411. The regeneration chamber 407 is composed of the inner wall of the bed body 1 and the partition 410. The upper and lower ends of the regeneration chamber 407 are respectively provided with a regeneration discharge port 418 and a regeneration feed port 417, and the regeneration discharge port 418 and the regeneration feed port 417 are both connected to the reaction chamber 404. A first mixing surface 412 and a second mixing surface 413 are arranged on the inner wall of the regeneration chamber 407. The first mixing surface 412 is located on the outer circle of the inner wall of the regeneration chamber 407, and the second mixing surface 413 is located on the inner circle of the inner wall of the regeneration chamber 407. A plurality of raised rings 414 are arranged on the flow surface 413, and the raised rings 414 on the No. 1 mixing surface 412 and the No. 2 mixing surface 413 are installed alternately up and down, and a No. 1 transition section 503 and a No. 2 transition section 504 are respectively arranged at the upper and lower ends of the regeneration chamber 407, and the circumferential cross-sections of the No. 1 transition section 503 and the No. 2 transition section 504 are arc-shaped, and the No. 1 transition section 503 and the No. 2 transition section 504 are both located on the inner wall of the main meridian of the regeneration chamber 407, and the heating core 409 is installed in a circular ring shape on the lower side of the hot air pipe 408, and a nozzle 501 is installed on the upper end of the hot air pipe 408, and the nozzle 501 is rotatably connected to the hot air pipe 408, and the nozzle 501 is in a cone shape, and the large end is located on the upper side, and a plurality of air ducts 502 are opened on the circumference of the nozzle 501, and the plurality of air ducts 502 are spiral.

[0034] While working, see Figures 1 to 8 , wastewater is introduced into the water inlet 401, oxygen is introduced into the air inlet 402, and a fluidizing medium is added into the reaction chamber 404. When the wastewater and oxygen enter the fluidized bed from the bottom plate 2, the conical design of the bottom plate 2 can slow down the speed of the liquid and the gas and change the flow direction of the liquid and the gas, so that they enter the bottom of the bed layer 3 more evenly. At the same time, the wastewater and the oxygen are mixed in the feed chamber 403. After the wastewater and the oxygen fill the feed chamber 403, they enter the reaction chamber 404 through the through hole 406 and impact the fluidizing medium, so that the fluidizing medium produces a fluidizing effect. During the fluidization process, the organic matter in the wastewater reacts with the oxygen, and the fluidizing medium adsorbs the organic matter. This achieves the effect of cleaning and filtering the wastewater. At the same time, the oxygen is heated by the heating core 409 and then passes into the regeneration chamber 407 through the hot air pipe 408. In this process, since the airway 502 is spiral, when the high-temperature oxygen flows into the regeneration chamber 407 through the airway 502, the nozzle 501 will be subjected to the reverse thrust of the high-temperature oxygen, causing the nozzle 501 to rotate when releasing the high-temperature oxygen. At this time, the high-temperature oxygen will flow through the nozzle 501 and point to various directions inside the regeneration chamber 407, thereby avoiding the high-temperature oxygen flowing in too single a direction when entering the regeneration chamber 407, resulting in a decrease in the contact effect between the high-temperature oxygen and the fluidized medium.

[0035] Furthermore, when the fluidized medium absorbs too much organic matter, it will settle to the lower side of the reaction chamber 404. When the fluidized medium contacts the bed 3, since the bed 3 is conical, the fluidized medium that settles downward will flow to the regeneration feed port 417 through the inclined side of the bed 3, thereby avoiding the problem that a part of the fluidized medium accumulates in the center of the bed 3 and needs to roll multiple times before entering the regeneration chamber 407. At the same time, most of the wastewater enters the reaction chamber 404 through the through hole 406, and a part of it enters through the drainage groove 405. Since the flow direction of the drainage groove 405 points to the regeneration feed port 417, the wastewater entering the reaction chamber 404 through the drainage groove 405 will preferentially enter the regeneration feed port 417. In this process, the flow of wastewater will drive the fluidized medium at the lower end of the regeneration feed port 417 to enter the regeneration chamber 407, thereby increasing the rate at which the fluidized medium to be regenerated enters the regeneration chamber 407. Before entering the regeneration feed port 417, the fluidized medium to be regenerated passes through the first The transition section 503 guides the flow, thereby avoiding the flow resistance of the fluidized medium when entering and exiting the regeneration chamber 407. When the fluidized medium enters the regeneration chamber 407, the wastewater and high-temperature oxygen push the fluidized medium to flow on the No. 1 mixing surface 412 and the No. 2 mixing surface 413. When the fluidized medium contacts the raised ring 414, it will be guided by the raised ring 414, so that the fluidized medium rolls irregularly in the regeneration chamber 407, thereby avoiding the problem that the fluidized medium in the wastewater fluidized bed reactor does not contact the high-temperature oxygen due to uneven mixing, thereby causing the regeneration reaction efficiency of the fluidized medium to decrease, thereby ensuring the regeneration reaction efficiency of the fluidized medium. Furthermore, the high-temperature oxygen in the regeneration chamber 407 reacts with the organic matter on the surface of the fluidized medium, and the fluidized medium will reduce its weight after the reaction in the regeneration chamber 407. At this time, the regenerated fluidized medium flows out through the regeneration outlet 418, and is guided into the reaction chamber 404 through the No. 2 transition section 504 to complete the regeneration of the fluidized medium.

[0036] A specific embodiment of the present invention is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above described embodiment. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A fluidized bed reaction device for cleaning wastewater from a tank truck, comprising a bottom plate (2), a bed body (1) and a filter screen (505), wherein the bed body (1) is installed on the upper side of the bottom plate (2), the bed body (1) is cylindrical, the bottom plate (2) is conical, and the large end is located on the upper side, a reaction chamber (404) is arranged in the bed body (1), the filter screen (505) is installed on the reaction chamber (404), a water inlet (401) and an air inlet (402) are provided on the bottom plate (2), a drain outlet (415) and an exhaust outlet (416) are provided on the upper side of the bed body (1), and the device is characterized in that: A bed layer (3) is installed in the bottom plate (2), the bed layer (3) is located on the upper side of the water inlet (401) and the air inlet (402), a plurality of through holes (406) are evenly distributed on the bed layer (3), the bottom plate (2) and the inner wall of the bed layer (3) are combined to form a feed chamber (403), a regeneration component is installed in the bed body (1), a regeneration chamber (407) is arranged in the regeneration component, a plurality of hot air pipes (408) are installed on the lower side of the regeneration chamber (407), the two ends of the plurality of hot air pipes (408) are respectively connected to the air inlet (402) and the inside of the regeneration chamber (407), and a heating core (409) is also installed between the plurality of hot air pipes (408) and the air inlet (402); The regeneration component comprises a partition (410), a support plate (411) and a heating core (409); the partition (410) is coaxially arranged inside the bed (1); the partition (410) is cylindrical; the bed (1) and the partition (410) are connected via a plurality of support plates (411); the regeneration chamber (407) is composed of an inner wall of the bed (1) and the partition (410); a regeneration discharge port (418) and a regeneration feed port (417) are respectively arranged at the upper and lower ends of the regeneration chamber (407); and the regeneration discharge port (418) and the regeneration feed port (417) are both connected to the reaction chamber (404); and the heating core (409) is installed in a circular shape on the lower side of the hot air pipe (408).

2. A fluidized bed reaction equipment for tank truck washing wastewater according to claim 1, characterized in that: A first mixing surface (412) and a second mixing surface (413) are provided on the inner wall of the regeneration chamber (407); the first mixing surface (412) is located on the outer circle of the inner wall of the regeneration chamber (407); the second mixing surface (413) is located on the inner circle of the inner wall of the regeneration chamber (407); a plurality of raised rings (414) are provided on the first mixing surface (412) and the second mixing surface (413); and the raised rings (414) on the first mixing surface (412) and the second mixing surface (413) are installed alternately up and down.

3. A fluidized bed reaction equipment for tank truck washing wastewater according to claim 1, characterized in that: The bed layer (3) is conical in shape, with the larger end located at the lower side; the upper end of the bed layer (3) is flush with the lower end of the partition (410), and the lower end of the bed layer (3) is flush with the upper end of the bottom plate (2).

4. A fluidized bed reaction equipment for tank truck washing wastewater according to claim 3, characterized in that: The bed layer (3) is also provided with a plurality of drainage grooves (405), which are evenly distributed on the outer circle of the bed layer (3). The circumferential cross-section of the plurality of drainage grooves (405) is in the shape of an arc, and the extension line of the upper end of the arc points to the regeneration chamber (407). The two ends of the drainage grooves (405) are respectively connected to the reaction chamber (404) and the feed chamber (403).

5. The fluidized bed reaction equipment for tank truck washing wastewater according to claim 1, characterized in that: A nozzle (501) is installed at the upper end of the hot air pipe (408). The nozzle (501) is rotatably connected to the hot air pipe (408). The nozzle (501) is in a frustum shape, with the large end located at the upper side. A plurality of air passages (502) are opened on the circumference of the nozzle (501), and the plurality of air passages (502) are in a spiral shape.

6. The fluidized bed reaction equipment for tank truck washing wastewater according to claim 1, characterized in that: The upper and lower ends of the regeneration chamber (407) are respectively provided with a transition section No. 1 (503) and a transition section No. 2 (504); the circumferential cross-sections of the transition section No. 1 (503) and the transition section No. 2 (504) are arc-shaped, and the transition section No. 1 (503) and the transition section No. 2 (504) are both located on the inner wall of the main diameter of the regeneration chamber (407).

7. The fluidized bed reaction equipment for tank truck washing wastewater according to claim 2, characterized in that: The first mixing surface (412) and the second mixing surface (413) are made of wear-resistant and corrosion-resistant materials, including any one of stainless steel, nickel-based alloy, titanium alloy and glass fiber reinforced plastic.

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