A regenerative anti-blocking RTO treatment device

Abstract

The present invention provides a cyclic regeneration type anti-clogging RTO treatment device, which is provided with an exhaust gas pretreatment chamber and a cyclic regeneration system. The exhaust gas pretreatment chamber is distributed between the heat storage chamber and the gas collection chamber. Adsorption balls for adsorbing amine-containing organic matter are provided in the exhaust gas pretreatment chamber; the cyclic regeneration system includes a circulation mechanism and a regeneration mechanism. The circulation mechanism removes the adsorption balls with salt crystals attached to the surface from the exhaust gas pretreatment chamber and transports them to the regeneration mechanism for regeneration. After the regeneration is completed, the circulation mechanism transfers the regenerated adsorption balls back to the exhaust gas pretreatment chamber to continue pretreatment of VOCs exhaust gas. This cycle is repeated to achieve a cyclic regeneration type anti-clogging treatment effect. The present invention can continuously move the adsorption balls enriched with salt crystals to the outside of the RTO body for regeneration, and then return them to the pretreatment chamber for recycling again. This can avoid clogging of the RTO heat storage body, does not require shutdown treatment, and avoids problems such as equipment corrosion and high-temperature deactivation of catalysts caused by high-pressure water flushing and high-temperature back-burning in the RTO body.

Description

Technical field:

[0001] The present invention belongs to the technical field of waste gas treatment, and in particular relates to a cyclic regeneration type anti-blocking RTO treatment device. Background technology:

[0002] Among common VOCs treatment technologies, regenerative thermal incineration (RTO) has been widely used in VOCs waste gas purification in chemical companies. It achieves VOCs emission reduction on the basis of meeting emission standards and has good environmental benefits. Because the composition of VOCs pollutants in chemical companies is very complex, when using regenerative thermal incineration to treat volatile amine-containing organic compounds (trimethylamine, trihexylamine, etc.), ammonium salt crystals are easily formed in the low-temperature area of ​​the RTO thermal storage body, causing blockage and posing a safety hazard of explosion, which affects the safe and stable operation of the RTO. High-temperature back-burning is often used in industry for treatment. The back-burning temperature can reach above 400°C, which is very likely to cause high-temperature deactivation of the catalyst embedded in the middle of the thermal storage body. Another method of treating blockages in industry is high-pressure water flushing. During the flushing process, liquid easily forms inside the equipment. Due to the presence of hydrogen chloride, a reaction product of the RTO furnace, it is very easy to corrode the equipment and shorten the service life of the RTO.

[0003] Currently, the domestically published invention patent, "A Combined Process and System for Efficient Anti-Blocking Treatment of Low-Concentration VOC Tail Gas" (CN 113701174A), primarily recycles the waste heat of low-temperature flue gas to increase the exhaust gas inlet temperature, reducing the amount of ammonia produced by the decomposition of amine-containing organic matter, which is adsorbed in the regenerator bed and then enters the furnace for decomposition. This reduces the source of ammonium salt synthesis and reduces blockage caused by the accumulation of ammonium salt particles in the regenerator bed. However, the low-temperature flue gas used in this invention makes it difficult to decompose ammonium salt particles, and therefore does not significantly improve the RTO blockage problem.

[0004] The domestically published utility model patent, "An RTO Oxidation Furnace for Waste Gas Treatment" (CN 212005719 U), primarily incorporates an electrostatic precipitator (ESP) before the RTO furnace's air intake. This ESP captures particulate matter and oil mist in the exhaust gas, preventing clogging of the ceramic filler within the RTO oxidizer. However, this utility model's use of an ESP poses a safety hazard at high VOC concentrations.

[0005] The domestically published utility model patent, "An RTO Cleaning System for Preventing Blockage by Adhesive Substances" (CN218295752U), combines central steam purging with bottom compressed air purging, coupled with the RTO cabinet's switching operating mode, to continuously and rapidly and thoroughly clean adhesive substances within the ceramic thermal storage element, preventing blockage. Since most salt particles are highly water-soluble, steam cleaning is effective. However, the remaining liquid tends to accumulate in the plenum chamber, potentially causing equipment corrosion and other problems.

[0006] Therefore, both high-temperature backfire and high-pressure flushing measures are performed inside the RTO furnace, which can easily damage the equipment itself. Furthermore, both high-temperature backfire and high-pressure water flushing require RTO unit downtime, resulting in significant economic losses for the company. Therefore, it is necessary to develop a device independent of the RTO unit to address RTO blockage. Based on this, the present invention provides a regenerative, anti-blocking RTO treatment device to address this issue. Summary of the invention:

[0007] The purpose of the present invention is to address the deficiencies of the existing technology and provide a recycling and regeneration anti-clogging RTO treatment device. The core idea is to add a waste gas pretreatment chamber, enrich amine-containing organic matter through adsorption balls, so that the salt-containing crystals formed with hydrogen chloride accumulate on the adsorption balls, and through a continuous recycling regeneration device, the adsorption balls are continuously moved to the outside of the RTO body, and after high-pressure water washing and high-temperature back-burning treatment outside the RTO body, they are recycled to the waste gas pretreatment chamber for use.

[0008] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0009] The present invention provides a recycling and regeneration type anti-blocking RTO treatment device, which is provided with an exhaust gas pretreatment chamber and a recycling and regeneration system; the exhaust gas pretreatment chamber is arranged between a heat storage chamber and a gas collecting chamber, and adsorption balls for adsorbing amine-containing organic matter are arranged inside the exhaust gas pretreatment chamber; the recycling and regeneration system is connected to the exhaust gas pretreatment chamber, and the recycling and regeneration system includes a circulation mechanism and a regeneration mechanism, which are used to remove the adsorption balls inside the exhaust gas pretreatment chamber and transfer them back to the exhaust gas pretreatment chamber after regeneration.

[0010] Furthermore, the exhaust gas pretreatment chamber includes a pretreatment chamber shell, an inlet channel and an outlet channel; the inlet channel and the outlet channel are arranged on one side of the pretreatment chamber shell, and the inlet channel is distributed above the outlet channel; the inlet channel is connected to the discharge port of the circulation mechanism through the pretreatment chamber inlet interface; the outlet channel is connected to the feed port of the circulation mechanism through the pretreatment chamber outlet interface.

[0011] Furthermore, an upper mesh plate and a lower mesh plate are fixedly installed inside the exhaust gas pretreatment chamber; the upper mesh plate corresponds to the position of the inlet channel, and the upper mesh plate is arranged obliquely downward in the direction away from the inlet channel, with a downward slope, and the adsorption balls in the inlet channel move to the upper mesh plate along the slope; the lower mesh plate corresponds to the position of the outlet channel, and the lower mesh plate is arranged obliquely upward in the direction away from the outlet channel, with an upward slope, and the adsorption balls on the upper mesh plate move to the lower mesh plate, and then move to the outlet channel along the slope of the lower mesh plate.

[0012] Furthermore, an inlet and outlet shared gate valve is also provided; the inlet and outlet shared gate valve is installed on the inlet channel and the outlet channel, and controls the opening and closing of the inlet channel and the outlet channel at the same time.

[0013] Furthermore, the circulation mechanism includes an inlet conveying component and an outlet conveying component; the inlet conveying component includes an inlet conveying pipe, an inlet screw conveying shaft and an inlet conveying motor; the inlet screw conveying shaft is rotatably installed inside the inlet conveying pipe, the inlet conveying motor is arranged on one side of the inlet conveying pipe, and is driven and connected to the inlet screw conveying shaft, and the other side of the inlet conveying pipe is connected to the discharge port of the regeneration mechanism; the lower surface of the inlet conveying pipe is provided with a discharge port for the adsorption balls to pass through, and the inlet conveying pipe is connected to the inlet interface of the pretreatment chamber through the discharge port; the outlet conveying component includes an outlet conveying pipe, an outlet screw conveying shaft and an outlet conveying motor; the outlet screw conveying shaft is rotatably installed inside the outlet conveying pipe, the outlet conveying motor is arranged on one side of the outlet conveying pipe, and is driven and connected to the outlet screw conveying shaft, and the other side of the outlet conveying pipe is connected to the feed port of the regeneration mechanism; the upper surface of the outlet conveying pipe is provided with a feed port for the adsorption balls to pass through, and the outlet conveying pipe is connected to the outlet interface of the pretreatment chamber through the feed port; the rotation direction of the inlet screw conveying shaft is opposite to the rotation direction of the outlet screw conveying shaft.

[0014] Furthermore, the regeneration mechanism includes a high-pressure flushing chamber for flushing crystals on the surface of the adsorption ball and a high-temperature back-burning chamber for back-burning crystals on the surface of the adsorption ball; the feed end of the high-pressure flushing chamber is connected to the discharge end of the circulation mechanism, the discharge end of the high-pressure flushing chamber is connected to the feed end of the high-temperature back-burning chamber through the conveying mechanism, and the discharge end of the high-temperature back-burning chamber is connected to the feed end of the circulation mechanism.

[0015] Furthermore, the high-pressure washing chamber includes a high-pressure washing chamber shell, a high-pressure washing chamber inlet channel, a high-pressure washing chamber outlet channel, a high-pressure washing chamber partition and a high-pressure flushing pipe; one end of the high-pressure washing chamber inlet channel is connected to the discharge end of the circulation mechanism, and the other end is connected to the high-pressure washing chamber shell, and the high-pressure washing chamber inlet channel is inclined downward in the direction close to the high-pressure washing chamber shell; one end of the high-pressure washing chamber outlet channel is connected to the high-pressure washing chamber shell, and the other end is connected to the input port of the conveying mechanism, and the high-pressure washing chamber outlet channel is inclined downward in the direction away from the high-pressure washing chamber shell; the high-pressure washing chamber partition has a mesh structure and is fixedly installed inside the high-pressure washing chamber shell; the high-pressure flushing pipe is arranged inside the high-pressure washing chamber shell, and is distributed above the high-pressure washing chamber partition to high-pressure wash the adsorption balls on the high-pressure washing chamber partition.

[0016] Furthermore, the conveying mechanism includes a lifting pipe shell, a lifter, a lifting pipe section isolation plate and a lifting pipe section motor; the lifting pipe shell is vertically distributed, and the lifting pipe shell is provided with a lower feed port connected to the high-pressure flushing chamber and an upper discharge port connected to the high-temperature back-burning chamber; the lifter is rotatably installed inside the lifting pipe shell, and the lifting pipe section motor is provided on the top of the lifting pipe shell and is connected to the lifter drive; the lifting pipe section isolation plate is fixed inside the lifting pipe shell, corresponding to the position of the high-pressure flushing chamber partition, and the bottom of the lifter is rotatably connected to the lifting pipe section isolation plate, and the adsorption balls on the high-pressure flushing chamber partition enter the lifting pipe section isolation plate through the lower feed port, and enter the high-temperature back-burning chamber through the upper discharge port as the lifter lifts.

[0017] Furthermore, a drain outlet is provided at the bottom of the lifting pipe shell, and the waste water after high-pressure flushing flows into the high-pressure flushing chamber shell, the high-pressure flushing chamber outlet channel and the lifting pipe shell through the mesh of the high-pressure flushing chamber partition, and finally flows out through the drain outlet.

[0018] Furthermore, the high-temperature reverse combustion chamber is arranged inside the heat treatment chamber shell; the top of the heat treatment chamber shell is provided with an upper end interface, and the bottom is provided with a lower end interface; the upper end interface is connected to the RTO heat bypass pipe, and the lower end interface is connected to the high-temperature flue gas mixing box; the high-temperature reverse combustion chamber includes a high-temperature reverse combustion chamber shell, a high-temperature reverse combustion chamber inlet channel and a high-temperature reverse combustion chamber outlet channel; one end of the high-temperature reverse combustion chamber inlet channel is connected to the discharge end of the conveying mechanism, and the other end is connected to the feed end of the high-temperature reverse combustion chamber shell, and the high-temperature reverse combustion chamber inlet channel is inclined downward in a direction close to the high-temperature reverse combustion chamber shell; one end of the high-temperature reverse combustion chamber outlet channel is connected to the discharge end of the high-temperature reverse combustion chamber shell, and the other end is connected to the feed end of the circulation mechanism, and the high-temperature reverse combustion chamber outlet channel is inclined downward in a direction away from the high-temperature reverse combustion chamber shell; the high-temperature reverse combustion chamber shell is a porous structure, and the high-temperature hot gas of the RTO heat bypass pipe enters the high-temperature reverse combustion chamber shell through the upper end interface and the porous structure, reverses the adsorption ball, and the reverse combustion exhaust gas flows out and enters the high-temperature flue gas mixing box through the lower end interface.

[0019] Furthermore, the RTO treatment device is a three-chamber regenerative incinerator, three groups of exhaust gas pretreatment chambers are provided, and the circulation mechanism is connected to the three groups of exhaust gas pretreatment chambers at the same time.

[0020] Furthermore, the adsorption ball is a modified honeycomb ceramic ball, which is a spherical ceramic structure with a diameter of 50 to 100 mm and an intersecting pore structure arranged inside, with a pore diameter of 8 to 12 mm.

[0021] Furthermore, the preparation method of the modified honeycomb ceramic ball is as follows: ceramic powder is mixed and stirred with polydiallyldimethylammonium chloride solution, and pretreated ceramic powder is obtained after washing and drying; ethanol, deionized water, ammonia water, and hexadecyltrimethylammonium bromide are mixed to obtain a composite solution, the pretreated ceramic powder is mixed with the composite solution, and an impregnation solution is prepared; the honeycomb ceramic ball is placed in the impregnation solution and stirred, tetraethyl orthosilicate is slowly added and stirred, and dried; hydrogen peroxide solution is mixed with metal sulfate solution, the dried honeycomb ceramic ball is placed in the mixed solution for modification, the modified honeycomb ceramic ball is dried and then roasted, and cooled to obtain a honeycomb ceramic ball with a mesoSiO2 adsorption layer formed on the surface.

[0022] Beneficial effects of the present invention:

[0023] (1) The present invention adds an exhaust gas pretreatment chamber. The pretreatment chamber replaces the traditional rectangular saddle ring placement layer with round adsorption balls instead of irregular rectangular saddle rings, which is easy to move. At the same time, the adsorption balls in the pretreatment chamber are always in a continuous running state to prevent salt crystals from accumulating in the pretreatment chamber.

[0024] (2) The continuous circulation regeneration system of the present invention can continuously move the adsorption balls enriched with salt crystals to the outside of the RTO body, and after entering the high-pressure washing chamber, the honeycomb ceramic balls washed with high-pressure water enter the high-temperature back-burning chamber, and the crystals that are not completely washed away are burned out by high-temperature back-burning. The honeycomb ceramic balls after back-burning are moved to the pretreatment chamber for recycling again, without the need for the RTO device to be shut down for treatment, thereby avoiding economic losses caused by the shutdown of the RTO device.

[0025] (3) The present invention can avoid problems such as equipment corrosion and catalyst high-temperature deactivation caused by high-pressure water flushing and high-temperature back-burning in the RTO body. Description of the drawings:

[0026] Figure 1 This is a process flow chart of the regenerative anti-blocking RTO treatment device of the present invention;

[0027] Figure 2 This is a system diagram of the regenerative anti-blocking RTO treatment device of the present invention;

[0028] Figure 3 Schematic diagram of the circulation mechanism of the present invention;

[0029] Figure 4 is a cross-sectional view of the exhaust gas pretreatment chamber of the present invention;

[0030] Figure 5 Schematic diagram of the regeneration mechanism of the present invention;

[0031] The symbols in the accompanying drawings are:

[0032] 1. Adsorption ball; 2. Inlet conveying assembly; 21. Inlet conveying pipe; 22. Pretreatment chamber inlet interface; 23. Inlet screw conveying shaft; 24. Inlet conveying motor; 3. Exhaust gas pretreatment chamber; 31. Pretreatment chamber shell; 32. Inlet and outlet shared gate valve; 33. Inlet channel; 34. Outlet channel; 35. Upper mesh plate; 36. Lower mesh plate; 4. Outlet conveying assembly; 41. Outlet conveying pipe; 42. Pretreatment chamber outlet interface; 43. Outlet screw conveying shaft; 44. Outlet conveying motor; 5. Heat treatment chamber; 51. Heat treatment chamber shell; 52. Upper end interface; 53. Lower end interface; 6. High High-pressure flushing chamber; 61. High-pressure flushing chamber inlet channel; 62. High-pressure flushing chamber shell; 63. High-pressure flushing chamber partition; 64. High-pressure flushing chamber outlet channel; 7. High-pressure flushing pipe; 8. Conveying mechanism; 81. Lifting pipe shell; 82. Lifter; 83. Lifting pipe section isolation plate; 84. Drain; 85. Lifting pipe section motor; 9. High-temperature back-burning chamber; 91. High-temperature back-burning chamber inlet channel; 92. High-temperature back-burning chamber shell; 93. High-temperature back-burning chamber outlet channel; 10. High-temperature flue gas mixing box; 11. Combustion chamber; 12. Heat storage chamber; 13. Gas collecting chamber; 14. Circulation mechanism; 15. RTO thermal bypass pipe. Specific implementation method:

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0034] Example 1

[0035] Reference Figures 1-2 An embodiment of the present invention provides a regenerative and anti-blocking RTO treatment device. The RTO treatment device is a three-chamber regenerative incinerator, in which a regenerative chamber, a combustion chamber and a gas collecting chamber are provided. An air inlet pipe and an air outlet pipe are provided at the bottom of the regenerative incinerator, and the air inlet pipe and the air outlet pipe are respectively connected to the gas collecting chamber.

[0036] In the present invention, the RTO treatment device is further equipped with an exhaust gas pretreatment chamber and a recycling and regeneration system. The exhaust gas pretreatment chambers are provided in three groups, distributed between the regenerator and the gas collection chamber. Adsorption balls for adsorbing amine-containing organic matter are installed inside the exhaust gas pretreatment chambers. After adsorbing the amine-containing organic matter, the adsorption balls react with hydrogen chloride, a combustion product in the RTO furnace, to form salt-containing crystals, thereby forming crystals on the surface of the adsorption balls. The recycling and regeneration system is connected to all three groups of exhaust gas pretreatment chambers and includes a circulation mechanism and a regeneration mechanism.

[0037] During operation, the adsorption balls inside the exhaust gas pretreatment chamber absorb amine-containing organic matter from the VOCs exhaust gas and react with hydrogen chloride, a product of RTO furnace combustion, to form salt crystals. A circulation mechanism removes the salt-crystallized adsorption balls from the exhaust gas pretreatment chamber and transports them to a regeneration mechanism to remove the surface crystals, thereby regenerating the adsorption balls. After regeneration is complete, the circulation mechanism returns the regenerated adsorption balls to the exhaust gas pretreatment chamber to continue pre-treating the VOCs exhaust gas. This cycle repeats, achieving a regenerative anti-blocking treatment effect.

[0038] Example 2

[0039] The main structure of this embodiment is the same as that of embodiment 1, except that this embodiment limits the structure of the exhaust gas pretreatment chamber.

[0040] Specifically, refer to Figure 4 In this embodiment, the exhaust gas pretreatment chamber includes a pretreatment chamber housing 31, an inlet channel 33, and an outlet channel 34. The inlet channel 33 and the outlet channel 34 are arranged on one side of the pretreatment chamber housing 31, with the inlet channel 33 located above the outlet channel 34. The inlet channel 33 is connected to the discharge port of the circulation mechanism via the pretreatment chamber inlet interface 22, and the outlet channel 34 is connected to the feed port of the circulation mechanism via the pretreatment chamber outlet interface 42.

[0041] In this embodiment, an upper mesh plate 35 and a lower mesh plate 36 are fixedly installed inside the exhaust gas pretreatment chamber. The adsorption balls on the upper mesh plate 35 and the lower mesh plate 36 are used for pretreatment of VOCs exhaust gas. The double-layer arrangement can make the gas distribution more uniform while better adsorbing amine-containing organic matter in the exhaust gas.

[0042] The upper mesh plate 35 corresponds to the position of the inlet channel 33. The mesh plate 35 is set obliquely downward in the direction away from the inlet channel 33, with a downward slope of 1 to 3 degrees, which facilitates the movement of the adsorption balls. The adsorption balls at the discharge port of the circulation mechanism enter the inlet channel 33, and the adsorption balls in the inlet channel 33 move to the mesh plate 35 along the slope. The lower mesh plate 36 corresponds to the position of the outlet channel 34. The lower mesh plate 36 is set obliquely upward in the direction away from the outlet channel 34, with an upward slope of 1 to 3 degrees, which facilitates the movement of the adsorption balls. In this embodiment, there is a gap between the end of the mesh plate 35 away from the inlet channel 33 and the side wall of the pretreatment chamber shell 31 for the adsorption balls to pass through. The end of the lower mesh plate 36 away from the outlet channel 34 is connected to the side wall of the pretreatment chamber shell 31. The adsorption balls on the upper mesh plate 35 can move to the lower mesh plate 36, and then move to the outlet channel 34 along the slope of the lower mesh plate 36, and enter the circulation mechanism.

[0043] In this embodiment, an inlet and outlet shared gate valve 32 is further provided; the inlet and outlet shared gate valve 32 is installed on the inlet channel 33 and the outlet channel 34 to control the opening and closing of the inlet channel 33 and the outlet channel 34 at the same time.

[0044] The inlet and outlet shared gate valve 32 is written into the RTO body valve opening program. When the valve on the RTO intake pipe is opened, the inlet and outlet shared gate valve 32 is closed. When the valve on the RTO outlet pipe is opened, the inlet and outlet shared gate valve 32 is opened. The adsorption balls roll into the pretreatment chamber and switch continuously to ensure that the inlet and outlet shared gate valve 32 is in a closed state when high-concentration exhaust gas is introduced, avoiding exhaust gas leakage causing the exhaust pipe exhaust concentration to exceed the standard instantaneously. At the same time, the inlet and outlet shared gate valve 32 is intermittently opened and closed, which can keep the adsorption balls in a state of continuous movement to avoid salt crystals from solidifying in the pretreatment chamber.

[0045] Example 3

[0046] The main structure of this embodiment is the same as that of embodiment 2, except that this embodiment limits the structure of the circulation mechanism.

[0047] Specifically, refer to Figure 3 In this embodiment, the circulation mechanism includes an inlet conveying component 2 and an outlet conveying component 4.

[0048] The inlet conveying assembly 2 includes an inlet conveying pipe 21, an inlet spiral conveying shaft 23 and an inlet conveying motor 24; the inlet spiral conveying shaft 23 is rotatably installed inside the inlet conveying pipe 21, and the inlet conveying motor 24 is arranged on one side of the inlet conveying pipe 21, and is driven and connected to the inlet spiral conveying shaft 23, and the other side of the inlet conveying pipe 21 is connected to the discharge port of the regeneration mechanism; three discharge ports for the adsorption balls to pass through are provided on the lower surface of the inlet conveying pipe 21, and the inlet conveying pipe 21 is respectively connected to the three groups of pretreatment chamber inlet interfaces 22 through the three discharge ports.

[0049] The outlet conveying assembly 4 includes an outlet conveying pipe 41, an outlet spiral conveying shaft 43 and an outlet conveying motor 44; the outlet spiral conveying shaft 43 is rotatably installed inside the outlet conveying pipe 41, and the outlet conveying motor 44 is arranged on one side of the outlet conveying pipe 41, and is driven and connected to the outlet spiral conveying shaft 43, and the other side of the outlet conveying pipe 41 is connected to the feed port of the regeneration mechanism; three feed ports for the adsorption balls to pass through are provided on the upper surface of the outlet conveying pipe 41, and the outlet conveying pipe 41 is respectively connected to the three groups of pretreatment chamber outlet interfaces 42 through the three feed ports; the rotation direction of the inlet spiral conveying shaft 23 is opposite to the rotation direction of the outlet spiral conveying shaft 43.

[0050] During operation, the adsorption balls at the regeneration mechanism's discharge port move horizontally along the inlet screw conveyor shaft 23 within the inlet conveying pipe 21. Once at the discharge port on the lower surface of the inlet conveying pipe 21, the adsorption balls, under the action of gravity, pass through the discharge port and the pretreatment chamber inlet interface 22, into the inlet channel 33, and finally into the exhaust gas pretreatment chamber for VOCs pretreatment. After treating the exhaust gas, the adsorption balls pass through the outlet channel 34 and the pretreatment chamber outlet interface 42, and enter the outlet conveying pipe 41 through the feed port on its upper surface. The adsorption balls then move horizontally along the outlet screw conveyor shaft 43 within the outlet conveying pipe 41, ultimately entering the regeneration mechanism for regeneration.

[0051] Example 4

[0052] The main structure of this embodiment is the same as that of embodiment 3, except that this embodiment limits the structure of the regeneration mechanism.

[0053] Specifically, refer to Figure 5 In this embodiment, the regeneration mechanism includes a high-pressure flushing chamber 6 for flushing crystals on the surface of the adsorption balls and a high-temperature sintering chamber 9 for sintering crystals on the surface of the adsorption balls. The feed end of the high-pressure flushing chamber 6 is connected to the discharge end of the circulation mechanism. The discharge end of the high-pressure flushing chamber 6 is connected to the feed end of the high-temperature sintering chamber 9 through a conveying mechanism 8. The discharge end of the high-temperature sintering chamber 9 is connected to the feed end of the circulation mechanism.

[0054] During use, adsorption balls with salt crystals attached to their surfaces first pass through the discharge end of the circulation mechanism into the high-pressure flushing chamber 6, where high-pressure water washes away the crystals on the balls' surfaces. The washed balls then pass through the conveying mechanism 8 into the high-temperature incineration chamber 9, where clean, high-temperature gas from the RTO incineration process incinerates the washed balls at high temperatures, removing any salt crystals that were not completely washed away and simultaneously drying the balls. The dried balls then enter the circulation mechanism for reuse in the next cycle.

[0055] Example 5

[0056] The main structure of this embodiment is the same as that of embodiment 4, except that this embodiment limits the structure of the high-pressure flushing chamber 6.

[0057] Specifically, refer to Figure 5In this embodiment, the high-pressure flushing chamber 6 includes a high-pressure flushing chamber shell 62, a high-pressure flushing chamber inlet channel 61, a high-pressure flushing chamber outlet channel 64, a high-pressure flushing chamber partition 63 and a high-pressure flushing pipe 7. One end of the high-pressure washing chamber inlet channel 61 is connected to the discharge end of the circulation mechanism, and the other end is connected to the high-pressure washing chamber shell 62. The high-pressure washing chamber inlet channel 61 is inclined downward (10 to 20 degrees) in the direction close to the high-pressure washing chamber shell 62; one end of the high-pressure washing chamber outlet channel 64 is connected to the high-pressure washing chamber shell 62, and the other end is connected to the input port of the conveying mechanism 8. The high-pressure washing chamber outlet channel 64 is inclined downward (10 to 20 degrees) in the direction away from the high-pressure washing chamber shell 62; the high-pressure washing chamber partition 63 has a mesh structure and is fixedly installed inside the high-pressure washing chamber shell 62. The high-pressure washing chamber partition 63 can be provided with a slope structure (inclined downward by 1 to 3 degrees) as needed to facilitate the adsorption balls to roll from the high-pressure washing chamber inlet channel 61 to the high-pressure washing chamber outlet channel 64 by themselves; the high-pressure flushing pipe 7 is arranged inside the high-pressure washing chamber shell 62 and distributed above the high-pressure washing chamber partition 63 to high-pressure wash the adsorption balls on the high-pressure washing chamber partition 63.

[0058] During operation, the adsorption balls at the discharge end of the circulation mechanism enter the high-pressure flushing chamber partition 63 through the high-pressure flushing chamber inlet channel 61. Crystals on the surface of the adsorption balls are washed away by the high-pressure flushing pipe 7. The washed adsorption balls enter the conveying mechanism 8 through the high-pressure flushing chamber outlet channel 64. The wastewater after flushing passes through the mesh of the high-pressure flushing chamber partition 63 and falls into the bottom of the high-pressure flushing chamber housing 62, achieving solid-liquid separation, and finally flows out through the slope structure of the high-pressure flushing chamber outlet channel 64.

[0059] Example 6

[0060] The main structure of this embodiment is the same as that of embodiment 5, except that this embodiment limits the structure of the conveying mechanism 8.

[0061] Specifically, refer to Figure 5 In this embodiment, the conveying mechanism 8 includes a lifting pipe shell 81, a lifter 82, a lifting pipe section isolation plate 83 and a lifting pipe section motor 85, and the lifter 82 is a bolt lifting structure.

[0062] The lifting pipe housing 81 is vertically arranged and is provided with a lower feed port connected to the high-pressure flushing chamber 6 and an upper discharge port connected to the high-temperature backfire chamber 9. The lifter 82 is rotatably mounted within the lifting pipe housing 81. A lifting pipe section motor 85 is located at the top of the lifting pipe housing 81 and is drivingly connected to the lifter 82. The lifting pipe section isolation plate 83 is fixed within the lifting pipe housing 81, corresponding to the high-pressure flushing chamber partition 63. The bottom of the lifter 82 is rotatably connected to the lifting pipe section isolation plate 83.

[0063] In this embodiment, a drain outlet 84 is provided at the bottom of the lifting pipe shell 81, and the lifting pipe section isolation plate 83 divides the lifting pipe shell 81 into two parts, the upper part is the solid lifting area, and the lower part is the wastewater discharge area.

[0064] During operation, the adsorption balls on the high-pressure flushing chamber partition 63 enter the lifting pipe section isolation plate 83 through the lower feed port, are lifted by the lifter 82, and enter the high-temperature back-burning chamber 9 through the upper discharge port. The wastewater after high-pressure flushing flows through the mesh of the high-pressure flushing chamber partition 63 into the high-pressure flushing chamber shell 62, the high-pressure flushing chamber outlet channel 64, and the lifting pipe shell 81, and finally flows out through the drain port 84 and is connected to the factory wastewater treatment system.

[0065] Example 7

[0066] The main structure of this embodiment is the same as that of embodiment 6, except that this embodiment limits the structure of the high-temperature anti-firing chamber 9.

[0067] Specifically, refer to Figure 5 In this embodiment, the high-temperature backfire chamber 9 is disposed within a heat treatment chamber housing 51. The housing 51 is provided with an upper port 52 at the top and a lower port 53 at the bottom. The upper port 52 is connected to the RTO heat bypass pipe, which is connected to the combustion chamber. The lower port 53 is connected to the high-temperature flue gas mixing box. An insulation layer is provided within the housing 51.

[0068] The high-temperature re-firing chamber 9 includes a high-temperature re-firing chamber housing 92, a high-temperature re-firing chamber inlet channel 91, and a high-temperature re-firing chamber outlet channel 93. The high-temperature re-firing chamber inlet channel 91 is connected to the discharge end of the conveying mechanism 8 at one end and to the feed end of the high-temperature re-firing chamber housing 92 at the other end. The high-temperature re-firing chamber inlet channel 91 is inclined downward (10-20 degrees) toward the high-temperature re-firing chamber housing 92. The high-temperature re-firing chamber outlet channel 93 is connected to the discharge end of the high-temperature re-firing chamber housing 92 at one end and to the feed end of the circulation mechanism at the other end. The high-temperature re-firing chamber outlet channel 93 is inclined downward (10-20 degrees) away from the high-temperature re-firing chamber housing 92. The high-temperature re-firing chamber housing 92 has a porous structure.

[0069] During operation, high-temperature hot air from the RTO thermal bypass pipe enters the high-temperature backfire chamber housing 92 through the upper port 52 and the porous structure, backfires the adsorption balls, removing any salt crystals that haven't been fully rinsed from their surfaces. The balls are then dried and then enter the circulation mechanism for reuse in the next cycle. The porous structure of the backfire chamber housing 92 ensures sufficient contact between the high-temperature flue gas and the adsorption balls. Backfire exhaust flows out through the porous structure and enters the high-temperature flue gas mixing box through the lower port 53.

[0070] Example 8

[0071] The main structure of this embodiment is the same as that of embodiment 7, except that this embodiment limits the structure and preparation method of the adsorption balls.

[0072] Specifically, the adsorption ball is a honeycomb ceramic ball, which is a spherical ceramic structure with a diameter of 50 to 100 mm and an intersecting pore structure arranged inside, with a pore diameter of 8 to 12 mm.

[0073] The preparation method of honeycomb ceramic balls is:

[0074] (1) Preparation of PDDA-pretreated ceramic powder:

[0075] The ceramic blocks were ball-milled into a ceramic powder with a particle size of 0.1 to 1 mm. The milled ceramic powder was then washed with ethanol, rinsed three times with deionized water, and dried for later use. The ceramic powder was then mixed with a 1.0 g / L polydiallyldimethylammonium chloride (PDDA) solution at a solid-to-liquid ratio of 1:(10-20). The mixture was stirred at room temperature for 1 hour, washed three times with deionized water by centrifugation, and dried at 60-80°C for 12 hours to obtain the PDDA-pretreated ceramic powder.

[0076] (2) Preparation of impregnation liquid:

[0077] Ethanol, deionized water, ammonia, and cetyltrimethylammonium bromide (CTAB) were mixed to prepare a composite solution, wherein the mass ratio of ethanol, deionized water, ammonia, and CTAB was (200-300):350:5:(3-5). The pretreated ceramic powder was mixed with the composite solution at a mass ratio of 1:(40-50), and ultrasonically dispersed for 10 minutes to prepare an impregnation solution.

[0078] (3) Impregnation of honeycomb ceramic balls:

[0079] Prepare the honeycomb ceramic balls by placing them in the impregnation solution and stirring them clockwise at a constant speed. Slowly add tetraethyl orthosilicate (TEOS) while stirring. Continue stirring for 2-5 hours at a temperature of 50-60°C. The mass ratio of TEOS to ceramic powder should be 1:2-4. After stirring, filter the mixture, wash it three times with deionized water, and dry it at 120°C for 12 hours before setting aside.

[0080] (4) Modification and calcination of honeycomb ceramic balls:

[0081] Prepare a 15% to 25% by mass hydrogen peroxide solution and a 2% to 4% by mass cobalt sulfate solution. Mix the prepared hydrogen peroxide solution with the metal sulfate solution in a volume ratio of 1:1 to 1.5 to obtain a modified solution. The honeycomb ceramic balls dried in step (3) are placed in the mixed solution for a second immersion at room temperature for 4 to 8 hours to modify the honeycomb ceramic balls. The modified honeycomb ceramic balls are filtered and washed 2 to 3 times with deionized water to remove the immersion solution from the sample surface. The modified honeycomb ceramic balls are then dried at 120°C for 12 hours. After drying, they are calcined in a muffle furnace at 500 to 600°C for 5 to 6 hours. After cooling to room temperature, the balls are removed to obtain honeycomb ceramic balls with a mesoSiO2 adsorption layer formed on their surfaces. The prepared honeycomb ceramic balls have excellent adsorption properties for amine-containing organic compounds.

[0082] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the scope of protection of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the present invention should be regarded as the scope of protection of the present invention.

Claims

1. A regenerative anti-blocking RTO treatment device, characterized by: The RTO treatment device is provided with an exhaust gas pretreatment chamber and a recycling regeneration system; The exhaust gas pretreatment chamber is arranged between the heat storage chamber and the gas collecting chamber, and an adsorption ball for adsorbing amine-containing organic matter is arranged inside the exhaust gas pretreatment chamber; The recycling and regeneration system is connected to the exhaust gas pretreatment chamber, and includes a recycling mechanism and a regeneration mechanism for removing the adsorption balls inside the exhaust gas pretreatment chamber and re-transferring them to the exhaust gas pretreatment chamber after regeneration; The adsorption balls are modified honeycomb ceramic balls. The preparation method of the modified honeycomb ceramic balls is as follows: ceramic powder is mixed and stirred with a polydiallyldimethylammonium chloride solution, and then washed and dried to obtain a pretreated ceramic powder; ethanol, deionized water, ammonia water, and hexadecyltrimethylammonium bromide are mixed to obtain a composite solution, and the pretreated ceramic powder and the composite solution are mixed to prepare an impregnation solution; the honeycomb ceramic balls are placed in the impregnation solution and stirred, tetraethyl orthosilicate is slowly added and stirred, and then dried; A hydrogen peroxide solution is mixed with a metal sulfate solution, and the dried honeycomb ceramic balls are placed in the mixed solution for modification. The modified honeycomb ceramic balls are dried, calcined, and cooled to obtain honeycomb ceramic balls with a mesoSiO2 adsorption layer formed on the surface.

2. The regenerative anti-blocking RTO treatment device according to claim 1, characterized in that: The exhaust gas pretreatment chamber comprises a pretreatment chamber housing (31), an inlet channel (33) and an outlet channel (34); The inlet channel (33) and the outlet channel (34) are arranged on one side of the pretreatment chamber housing (31), and the inlet channel (33) is distributed above the outlet channel (34); The inlet channel (33) is connected to the discharge port of the circulation mechanism through the pretreatment chamber inlet interface (22); the outlet channel (34) is connected to the feed port of the circulation mechanism through the pretreatment chamber outlet interface (42).

3. The regenerative anti-blocking RTO treatment device according to claim 2, characterized in that: An upper mesh plate (35) and a lower mesh plate (36) are fixedly arranged inside the exhaust gas pretreatment chamber; The upper mesh plate (35) corresponds to the position of the inlet channel (33), and the upper mesh plate (35) is arranged obliquely downward in a direction away from the inlet channel (33) and has a downward slope. The adsorption balls in the inlet channel (33) move to the upper mesh plate (35) along the slope. The lower mesh plate (36) corresponds to the position of the outlet channel (34). The lower mesh plate (36) is arranged obliquely upward in a direction away from the outlet channel (34) and has an upward slope. The adsorption balls on the mesh plate (35) move to the lower mesh plate (36) and then move to the outlet channel (34) along the slope of the lower mesh plate (36).

4. The regenerative anti-blocking RTO treatment device according to claim 2, characterized in that: A common inlet and outlet gate valve (32) is also provided; The inlet and outlet shared gate valve (32) is installed on the inlet channel (33) and the outlet channel (34), and controls the opening and closing of the inlet channel (33) and the outlet channel (34) at the same time.

5. The regenerative anti-blocking RTO treatment device according to claim 1, characterized in that: The circulation mechanism comprises an inlet conveying assembly (2) and an outlet conveying assembly (4); The inlet conveying assembly (2) comprises an inlet conveying pipe (21), an inlet screw conveying shaft (23) and an inlet conveying motor (24); the inlet screw conveying shaft (23) is rotatably mounted inside the inlet conveying pipe (21); the inlet conveying motor (24) is arranged on one side of the inlet conveying pipe (21) and is drivingly connected to the inlet screw conveying shaft (23); the other side of the inlet conveying pipe (21) is connected to the discharge port of the regeneration mechanism; a discharge port for the adsorption balls to pass through is provided on the lower surface of the inlet conveying pipe (21); the inlet conveying pipe (21) is connected to the inlet interface (22) of the pretreatment chamber via the discharge port; The outlet conveying assembly (4) comprises an outlet conveying pipe (41), an outlet spiral conveying shaft (43) and an outlet conveying motor (44); the outlet spiral conveying shaft (43) is rotatably mounted inside the outlet conveying pipe (41); the outlet conveying motor (44) is arranged on one side of the outlet conveying pipe (41) and is drivingly connected to the outlet spiral conveying shaft (43); the other side of the outlet conveying pipe (41) is connected to the feed port of the regeneration mechanism; the upper surface of the outlet conveying pipe (41) is provided with a feed port for the adsorption balls to pass through, and the outlet conveying pipe (41) is connected to the pretreatment chamber outlet interface (42) through the feed port; The rotation direction of the inlet screw conveying shaft (23) is opposite to the rotation direction of the outlet screw conveying shaft (43).

6. The regenerative anti-blocking RTO treatment device according to claim 1, characterized in that: The regeneration mechanism comprises a high-pressure flushing chamber (6) for flushing crystals on the surface of the adsorption ball and a high-temperature back-burning chamber (9) for back-burning crystals on the surface of the adsorption ball; The feed end of the high-pressure flushing chamber (6) is connected to the discharge end of the circulation mechanism, the discharge end of the high-pressure flushing chamber (6) is connected to the feed end of the high-temperature reverse burning chamber (9) through the conveying mechanism (8), and the discharge end of the high-temperature reverse burning chamber (9) is connected to the feed end of the circulation mechanism.

7. The regenerative anti-blocking RTO treatment device according to claim 6, characterized in that: The high-pressure flushing chamber (6) comprises a high-pressure flushing chamber housing (62), a high-pressure flushing chamber inlet channel (61), a high-pressure flushing chamber outlet channel (64), a high-pressure flushing chamber partition (63) and a high-pressure flushing pipe (7); One end of the high-pressure flushing chamber inlet channel (61) is connected to the discharge end of the circulation mechanism, and the other end is connected to the high-pressure flushing chamber housing (62), and the high-pressure flushing chamber inlet channel (61) is inclined downward in a direction close to the high-pressure flushing chamber housing (62); one end of the high-pressure flushing chamber outlet channel (64) is connected to the high-pressure flushing chamber housing (62), and the other end is connected to the input port of the conveying mechanism (8), and the high-pressure flushing chamber outlet channel (64) is inclined downward in a direction away from the high-pressure flushing chamber housing (62); The high-pressure flushing chamber partition (63) has a mesh structure and is fixedly installed inside the high-pressure flushing chamber shell (62); the high-pressure flushing pipe (7) is arranged inside the high-pressure flushing chamber shell (62) and distributed above the high-pressure flushing chamber partition (63) to perform high-pressure flushing on the adsorption balls on the high-pressure flushing chamber partition (63).

8. The regenerative anti-blocking RTO treatment device according to claim 7, characterized in that: The conveying mechanism (8) comprises a lifting pipe housing (81), a lifter (82), a lifting pipe section isolation plate (83) and a lifting pipe section motor (85); The lifting pipe shell (81) is vertically distributed, and the lifting pipe shell (81) is provided with a lower feed port connected to the high-pressure flushing chamber (6) and an upper discharge port connected to the high-temperature back-burning chamber (9); The lifter (82) is rotatably mounted inside the lifting pipe housing (81), and the lifting pipe section motor (85) is arranged on the top of the lifting pipe housing (81) and is drive-connected to the lifter (82); the lifting pipe section isolation plate (83) is fixed inside the lifting pipe housing (81) and corresponds to the position of the high-pressure flushing chamber partition (63), and the bottom of the lifter (82) is rotatably connected to the lifting pipe section isolation plate (83). The adsorption balls on the high-pressure flushing chamber partition (63) enter the lifting pipe section isolation plate (83) through the lower feed port, and enter the high-temperature back-burning chamber (9) through the upper discharge port as the lifter (82) is lifted.

9. The regenerative anti-blocking RTO treatment device according to claim 8, characterized in that: A drain outlet (84) is provided at the bottom of the lifting pipe housing (81), and waste water after high-pressure flushing flows into the high-pressure flushing chamber housing (62), the high-pressure flushing chamber outlet channel (64) and the lifting pipe housing (81) through the mesh of the high-pressure flushing chamber partition (63), and finally flows out through the drain outlet (84).

10. The regenerative anti-blocking RTO treatment device according to claim 6, characterized in that: The high-temperature back-firing chamber (9) is arranged inside the heat treatment chamber shell (51); The heat treatment chamber shell (51) is provided with an upper end interface (52) at the top and a lower end interface (53) at the bottom; the upper end interface (52) is connected to the RTO heat bypass pipe, and the lower end interface (53) is connected to the high-temperature flue gas mixing box; The high-temperature back-firing chamber (9) comprises a high-temperature back-firing chamber shell (92), a high-temperature back-firing chamber inlet channel (91) and a high-temperature back-firing chamber outlet channel (93); one end of the high-temperature back-firing chamber inlet channel (91) is connected to the discharge end of the conveying mechanism (8), and the other end is connected to the feed end of the high-temperature back-firing chamber shell (92); the high-temperature back-firing chamber inlet channel (91) is inclined downward in a direction close to the high-temperature back-firing chamber shell (92); one end of the high-temperature back-firing chamber outlet channel (93) is connected to the discharge end of the high-temperature back-firing chamber shell (92), and the other end is connected to the feed end of the circulation mechanism; the high-temperature back-firing chamber outlet channel (93) is inclined downward in a direction away from the high-temperature back-firing chamber shell (92); The high-temperature reverse combustion chamber shell (92) is a porous structure. The high-temperature hot gas from the RTO heat bypass pipe enters the high-temperature reverse combustion chamber shell (92) through the upper end interface (52) and the porous structure to reversely burn the adsorption balls. The reverse combustion exhaust gas flows out and enters the high-temperature flue gas mixing box through the lower end interface (53).

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