Furfural residue wet type advanced treatment equipment

Abstract

The present application relates to the technical field of furfural residue treatment, and particularly relates to a furfural residue wet deep treatment equipment, which comprises a high-pressure tank, a feeding pipe and a liquid outlet pipe; further comprising an inner container installed in the center of the cavity of the high-pressure tank, the upper edge of the inner container is connected with the middle inner wall of the high-pressure tank, a feeding gap is arranged between the lower end of the inner container and the bottom wall of the high-pressure tank, a preheating chamber is arranged between the inner container and the inner wall of the high-pressure tank, the feeding pipe is communicated with the preheating chamber, the inside of the inner container is a treatment chamber, an annular gate plate is installed at the bottom of the inner container in a liftable manner, the annular gate plate is used for opening or closing the feeding channel, the output end of an oxygen supply system is installed with a spray pipe, the output end of the spray pipe extends into the bottom of the treatment chamber through the bottom of the high-pressure tank, the input end of the oxygen supply system is connected with the top of the treatment cavity of the high-pressure tank, and the oxygen supply system is used for inputting an oxidant into the treatment chamber; the furfural residue preheating and treatment double stations have the advantages that the furfural residue can be efficiently wet deep treated, the working efficiency is high, and the practicability is good.

Description

Technical Field

[0001] This invention relates to the technical field of furfural residue treatment, and in particular to a wet deep treatment device for furfural residue. Background Technology

[0002] Furfural residue is a biomass waste generated during furfural production. It is typically acidic, has a high water content, and contains residual cellulose, lignin, and small amounts of furfural and other organic matter. Furfural residue requires reduction, harmlessness, and resource recovery treatment to minimize environmental pollution.

[0003] Several wet deep treatment methods are disclosed in the prior art. For example, Chinese invention patent CN115584653B proposes a method for extracting α-cellulose from furfural residue. This method removes silicon content from the furfural residue using sodium aluminate, bleachs the brown furfural residue using advanced oxidation and hydrogen peroxide, effectively extracts cellulose by adding sodium hydroxide, and removes inorganic salts by adding magnesium hydroxide and quicklime to form precipitates that are then washed away with water. Additionally, this method helps remove some ash. The entire reaction process does not involve toxic substances and is conducted at room temperature and pressure, which is beneficial for safety and environmental protection.

[0004] However, existing technologies have limited applications for wet-processing equipment for furfural residue. Therefore, proposing a universal treatment device capable of high-temperature hydrolysis and oxidation of furfural residue would be practical. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the present invention provides a furfural residue wet deep treatment equipment with dual stations for preheating and processing, which can perform efficient wet deep treatment of furfural residue, has high working efficiency and good practicality.

[0006] This invention discloses a wet deep treatment device for furfural residue, comprising a high-pressure tank with an internal chamber. A feed pipe is installed on the middle side wall of the high-pressure tank, and a liquid outlet pipe is installed at the center of the bottom of the high-pressure tank, communicating with the bottom of the chamber. It also includes an inner liner installed in the center of the chamber of the high-pressure tank, with a heating mechanism on the inner liner. The upper edge of the inner liner is connected to the middle inner wall of the high-pressure tank, and a feed gap is provided between the lower end of the inner liner and the bottom wall of the high-pressure tank. A preheating chamber is located between the inner liner and the inner wall of the high-pressure tank, and the feed pipe communicates with the preheating chamber. The interior of the inner liner is a treatment chamber. An annular gate is vertically and retractably installed at the bottom of the inner liner, and the annular gate is used for… The feed channel is opened or closed. A nozzle is installed at the output end of the oxygen supply system, extending from the bottom of the high-pressure tank into the bottom of the treatment chamber. The input end of the oxygen supply system is connected to the top of the treatment chamber of the high-pressure tank. The oxygen supply system is used to input oxidant into the treatment chamber. During operation, furfural residue is fed into the preheating chamber between the inner tank and the high-pressure tank through the feed pipe. At this time, the previous batch of preheated furfural residue is processed in the treatment chamber inside the inner tank. The heating mechanism on the inner tank heats the furfural residue slurry in the treatment chamber, while the residual heat of the inner tank preheats the furfural residue slurry in the preheating chamber. When the furfural residue slurry in the treatment chamber... After processing, the solution is discharged from the treatment chamber of the high-pressure tank through the outlet pipe. The annular gate rises to open the feed gap between the inner liner and the bottom of the high-pressure tank, allowing the preheated furfural slurry in the preheating chamber to enter the treatment chamber inside the inner liner. After feeding, the annular gate descends to close the feed gap, and the heating mechanism of the inner liner operates to heat the furfural slurry in the treatment chamber to the specified temperature. Simultaneously, the oxygen supply system operates to inject oxidant into the bottom of the treatment chamber through a nozzle, maintaining the specified pressure in the treatment chamber of the high-pressure tank. The oxidant can be air, oxygen, ozone, or hydrogen peroxide, etc., and is sprayed into the treatment chamber through the nozzle. The flow is from bottom to top, which drives the furfural residue to circulate. During the flow, the furfural residue undergoes hydrolysis and oxidation in a high-temperature environment, thus decomposing the furfural residue into waste gases such as carbon dioxide and a small amount of ash. The waste gases and excess oxidant are collected at the top of the treatment chamber of the high-pressure tank and discharged through the input end of the oxygen supply system. When the furfural residue in the treatment chamber is finished, the oxygen supply system is stopped, and after depressurization, the residual liquid and ash of the furfural residue are discharged through the liquid outlet pipe. During this process, the next batch of furfural residue is preheated in the preheating chamber, realizing efficient wet deep treatment of furfural residue in a dual-station manner. It has high working efficiency and good practicality.

[0007] Preferably, the system also includes a sealing sleeve installed at the bottom of the high-pressure tank, a nozzle that can be lifted and inserted into the sealing sleeve, one end of the push cylinder connected to the bottom of the high-pressure tank, the other end of the push cylinder connected to the nozzle, and the nozzle connected to the annular gate via a bracket.

[0008] Preferably, the inner liner is further provided with multiple bearing seats installed on its lower circumference, the upper ends of multiple levers are rotatably connected to the multiple bearing seats respectively, the middle parts of the multiple levers are rotatably connected to the upper ends of multiple push rods respectively, the lower ends of the multiple push rods are rotatably connected to the outer wall of the annular gate, and the multiple levers are located on the outer side of the annular gate.

[0009] Preferably, the heating mechanism includes a spiral coil installed inside the inner liner, the output end of the high-temperature tube is connected to the lower end of the spiral coil, the input end of the high-temperature tube extends out of the high-pressure tank, the input end of the low-temperature tube is connected to the upper end of the spiral coil, and the output end of the low-temperature tube extends out of the high-pressure tank.

[0010] Preferably, the system also includes a replenishment pipe installed on the side wall of the high-pressure tank, with the output end of the replenishment pipe extending into the upper part of the preheating chamber between the inner liner and the high-pressure tank.

[0011] Preferably, the pressure tank also includes an opening at the top, a removable and sealed cover installed on the opening, a pressure sensor installed on the cover, and a probe of the pressure sensor extending into the top of the processing chamber of the pressure tank.

[0012] Preferably, the gas lift pipe is vertically installed in the middle of the processing chamber inside the high-pressure tank, with the lower end of the gas lift pipe located above the output end of the nozzle and the upper end of the gas lift pipe located in the middle of the processing chamber.

[0013] Preferably, the upper end of the air lifting pipe is equipped with a screen basket, the side wall of the screen basket is provided with a large number of filter holes, and the upper port of the screen basket is detachably equipped with a vent cover, the vent cover is provided with a large number of filter holes.

[0014] Preferably, the oxygen supply system includes an oxygen delivery pipe whose output end is connected to the nozzle input end, an oxygen delivery pipe whose input end is connected to the high-pressure circulating pump output port, a high-pressure circulating pump input port connected to the oxygen inlet pipe output end, an oxygen inlet pipe input end connected to the first channel of a three-way valve, a three-way valve second channel connected to the return pipe output end, a return pipe output end connected to the top of the high-pressure tank processing chamber, a three-way valve third channel connected to the oxygen outlet pipe output end, and an oxygen outlet pipe input end connected to the oxidant generator output port.

[0015] Preferably, the system also includes a separation box installed on the reflux pipe, a separation chamber inside the separation box, multiple baffles installed in the separation chamber, and state gas separation packing in the separation chamber.

[0016] Compared with the prior art, the beneficial effects of the present invention are: it can realize efficient wet deep treatment of furfural residue in a dual-station manner, with high working efficiency and good practicality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the front section structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the isometric structure of the present invention;

[0020] Figure 4 It is a partial cross-sectional structural diagram of the high-pressure tank, inner liner, annular gate, nozzle, top cover, air lifting pipe, screen basket and vent cover.

[0021] Figure 5 It is a front cross-sectional schematic diagram of the high-pressure tank, inner liner, annular gate, nozzle, top cover, air lifting pipe, screen basket and vent cover.

[0022] Figure 6 It is an exploded structural diagram of the high-pressure tank, feed pipe, inner liner, annular gate, nozzle, pusher cylinder, high-temperature pipe, spiral coil, low-temperature pipe, replenishment pipe, top cover and pressure sensor.

[0023] Figure 7 It is a partial cross-sectional structural diagram of the inner liner, high-temperature tube, spiral coil and low-temperature tube, etc.

[0024] Figure 8 It is a structural diagram of the inner liner, annular gate, nozzle, push cylinder, bearing seat, lever and push rod, etc.

[0025] Figure 9 It is a structural diagram of the annular gate, nozzle, push cylinder, air lifting pipe, screen basket and vent cover.

[0026] The following are labels in the attached diagram: 1. High-pressure tank; 2. Feed pipe; 3. Discharge pipe; 4. Inner liner; 5. Annular gate; 6. Oxygen supply system; 7. Nozzle; 8. Sealing sleeve; 9. Push cylinder; 10. Bearing seat; 11. Actuator; 12. Push rod; 13. High-temperature pipe; 14. Spiral coil; 15. Low-temperature pipe; 16. Replenishment pipe; 17. Top cover; 18. Pressure sensor; 19. Air lift pipe; 20. Screen basket; 21. Vent cover; 22. Oxygen supply pipe; 23. High-pressure circulating pump; 24. Oxygen inlet pipe; 25. Three-way valve; 26. Return pipe; 27. Oxygen outlet pipe; 28. Oxidant generator; 29. ​​Separator; 30. Baffle plate. Detailed Implementation

[0027] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0028] Example 1, as Figures 1 to 7As shown, a wet deep treatment device for furfural residue includes a high-pressure tank 1, with a chamber inside the high-pressure tank 1. A feed pipe 2 is installed on the middle side wall of the high-pressure tank 1, and a liquid outlet pipe 3 is installed at the center of the bottom of the high-pressure tank 1, communicating with the bottom of the chamber. It also includes an inner liner 4 installed in the center of the chamber of the high-pressure tank 1, with a heating mechanism on the inner liner 4. The upper edge of the inner liner 4 is connected to the middle inner wall of the high-pressure tank 1, and a feed gap is provided between the lower end of the inner liner 4 and the bottom wall of the high-pressure tank 1. A preheating chamber is located between the inner liner 4 and the inner wall of the high-pressure tank 1, and the feed pipe 2 communicates with the preheating chamber. The interior of the inner liner 4 is a treatment chamber. An annular gate 5 is vertically mounted at the bottom of the inner liner 4, used to open or close the feed channel. A nozzle 7 is installed at the output end of an oxygen supply system 6, extending through the bottom of the high-pressure tank 1 into the bottom of the treatment chamber. The input end of the oxygen supply system 6 is connected to the top of the treatment chamber of the high-pressure tank 1, and the oxygen supply system 6 is used to input oxidant into the treatment chamber.

[0029] The heating mechanism includes a spiral coil 14 installed inside the inner tank 4. The output end of the high-temperature tube 13 is connected to the lower end of the spiral coil 14. The input end of the high-temperature tube 13 extends out of the outside of the high-pressure tank 1. The input end of the low-temperature tube 15 is connected to the upper end of the spiral coil 14. The output end of the low-temperature tube 15 extends out of the outside of the high-pressure tank 1.

[0030] It also includes a supplementary pipe 16 installed on the side wall of the high-pressure tank 1, with the output end of the supplementary pipe 16 extending into the upper part of the preheating chamber between the inner liner 4 and the high-pressure tank 1.

[0031] It also includes an opening at the top of the high-pressure tank 1, a removable and sealed cover 17 installed on the opening of the high-pressure tank 1, and a pressure sensor 18 installed on the cover 17, with the probe of the pressure sensor 18 extending into the top of the processing chamber of the high-pressure tank 1.

[0032] It is important to understand that a heat insulation layer is installed on the outer wall of the high-pressure tank 1, and a semi-insulation layer is installed on the outer wall of the inner liner 4. The semi-insulation layer causes the inner and outer sides of the inner liner 4 to have different temperatures. The top cover 17 is preferably connected to the opening of the high-pressure tank 1 through a flange and bolts to adapt to the high pressure during furfural residue treatment. The top cover 17 is removable to facilitate cleaning and maintenance of the chamber. The pressure in the treatment chamber is detected by the pressure sensor 18, and the pressure is adjusted in a timely manner according to the detected pressure value, which is beneficial to improving oxidation and hydrolysis efficiency. The high-temperature pipe 13 and the low-temperature pipe 15 are connected to the high-temperature medium system, and the input end of the supplement pipe 16 is connected to the oxygen supply system 6 or the water supply system.

[0033] As an alternative, the heating mechanism can be replaced with an electric heating rod or electromagnetic induction heating to adapt to different heat source conditions. In addition, for exposed moving parts such as the lifting mating surface of the annular gate 5 and the sliding surface of the nozzle 7 and the sealing sleeve 8 (see Embodiment 2), this embodiment has a high-temperature resistant sealing ring on the contact surface between the annular gate 5 and the inner liner 4, and a graphite sealing filler between the nozzle 7 and the sealing sleeve 8 to prevent high-pressure gas leakage. The lifting guide groove of the relatively moving parts such as the annular gate 5 is filled with high-temperature resistant grease. The sealing surface of high-wear parts such as the annular gate 5 is made of wear-resistant alloy steel, and the annular gate 5 and the nozzle 7 are connected by a detachable bracket for easy replacement. The semi-insulating layer of the inner liner 4 effectively prevents excessive heat loss. Electrical components such as the pressure sensor 18, the controller of the oxygen supply system 6, and the solenoid valve of the push cylinder 9 (see Embodiment 2) are all encapsulated in a waterproof and dustproof explosion-proof control box with a protection level of not less than IP55 to adapt to the high-pressure chemical environment.

[0034] During operation, furfural residue is fed into the preheating chamber between the inner tank 4 and the high-pressure tank 1 through the feed pipe 2. Meanwhile, the previous batch of preheated furfural residue is processed in the treatment chamber inside the inner tank 4. High-temperature steam or hot oil is fed into the spiral coil 14 through the high-temperature pipe 13 and discharged through the low-temperature pipe 15. This allows the high-temperature steam or hot oil to flow along the spiral coil 14, heating the treatment chamber and preheating chamber through the inner tank 4, bringing the furfural residue slurry to the specified temperature. The heating mechanism on the inner tank 4 heats the furfural residue slurry in the treatment chamber, while the inner tank 4... Waste heat is used to preheat the furfural residue slurry in the preheating chamber. After the furfural residue slurry in the treatment chamber is processed, it is discharged from the treatment chamber of the high-pressure tank 1 through the outlet pipe 3. The annular gate 5 is raised to open the feed gap between the inner liner 4 and the bottom of the high-pressure tank 1, allowing the preheated furfural residue slurry in the preheating chamber to enter the treatment chamber inside the inner liner 4 through the feed gap. After the feed gap is opened, oxidant or water is introduced into the preheating chamber through the replenishment pipe 16. The oxidant or water pushes the residual furfural residue in the preheating chamber into the treatment chamber, improving the furfural residue treatment efficiency and reducing residue. When water is introduced through the replenishment pipe 16, the ratio of furfural residue to water in the furfural residue slurry can be adjusted, which is beneficial to improving hydrolysis efficiency. After feeding is completed, the annular gate 5 descends to close the feeding gap, and the heating mechanism of the inner tank 4 operates to heat the furfural residue slurry in the treatment chamber to the specified temperature. At the same time, the oxygen supply system 6 operates to introduce oxidant into the bottom of the treatment chamber through the spray pipe 7, so that the treatment chamber of the high-pressure tank 1 maintains the specified pressure. The oxidant is air, oxygen, ozone or hydrogen peroxide. The oxidant sprayed into the treatment chamber through the spray pipe 7 flows from bottom to top, thereby driving the furfural residue. The slag is circulated and flows. During the flow, the furfural slag undergoes hydrolysis and oxidation in a high-temperature environment, thereby decomposing the furfural slag into waste gases such as carbon dioxide and a small amount of ash. The waste gases and excess oxidant are collected at the top of the treatment chamber of the high-pressure tank 1 and discharged through the input end of the oxygen supply system 6. When the furfural slag in the treatment chamber is finished, the oxygen supply system 6 is stopped, and after depressurization, the residual liquid and ash of the furfural slag are discharged through the liquid outlet pipe 3. During this process, the next batch of furfural slag is preheated in the preheating chamber, realizing efficient wet deep treatment of furfural slag in a dual-station process.

[0035] The oxygen supply system 6 includes an oxygen supply pipe 22 whose output end is connected to the input end of the nozzle 7, an oxygen supply pipe 22 whose input end is connected to the output port of the high-pressure circulating pump 23, an high-pressure circulating pump 23 whose input port is connected to the output end of the oxygen inlet pipe 24, an oxygen inlet pipe 24 whose input end is connected to the first channel of the three-way valve 25, a three-way valve 25 whose second channel is connected to the output end of the return pipe 26, a return pipe 26 whose input end is connected to the top of the processing chamber of the high-pressure tank 1, a three-way valve 25 whose third channel is connected to the output end of the oxygen outlet pipe 27, and an oxygen outlet pipe 27 whose input end is connected to the output port of the oxidant generator 28.

[0036] It also includes a separation box 29 installed on the return pipe 26, a separation chamber inside the separation box 29, multiple baffles 30 installed in the separation chamber, and gas separation packing material installed in the separation chamber.

[0037] The oxidant generator 28 is preferably an oxygen generator or an ozone generator. In the initial stage of treatment, the three-way valve 25 switches the connection between the first and third channels. The oxidant generator 28 operates to produce oxidant. The high-pressure circulating pump 23 operates to input the oxidant into the treatment chamber of the high-pressure tank 1 through the oxygen outlet pipe 27, the three-way valve 25, the oxygen inlet pipe 24, the high-pressure circulating pump 23, the oxygen delivery pipe 22, and the spray pipe 7. When the pressure in the treatment chamber reaches the set value, the three-way valve 25 adjusts the opening ratio of the second and third channels, so that the excess oxidant flows back through the return pipe 26, the three-way valve 25, and the oxygen inlet pipe 24 to the treatment chamber. The high-pressure circulating pump 23 enables the recycling of oxidant, and at the same time, new oxidant is added through the oxygen outlet pipe 27 and the three-way valve 25 to achieve wet deep oxidation treatment of furfural residue. Multiple baffles 30 divide the separation chamber into multiple compartments, each of which is filled with separation packing material, such as molecular membranes or molecular sieves. The molecular membranes or molecular sieves adsorb and intercept waste gases such as carbon dioxide in the mixed gas, and allow oxidants such as oxygen or ozone to flow back and be recycled through the molecular membranes or molecular sieves, ensuring the purity of the oxidant and improving the treatment efficiency. After working for a period of time, the separation packing material is removed and replaced.

[0038] Compared with existing technologies, the beneficial effects of this embodiment are as follows: the high-pressure tank is divided into a preheating chamber and a processing chamber by the inner liner. The heating mechanism of the inner liner simultaneously heats the processing chamber and preheats the preheating chamber with residual heat, realizing continuous operation at two stations and significantly improving work efficiency; the annular gate plate controls the feeding gap, and in conjunction with the pushing action of the supplementary pipe, realizes automatic feeding and residual cleaning of furfural residue; the spiral coil heating method is uniform and controllable, and the pressure sensor monitors the pressure of the processing chamber in real time, ensuring the safety and stability of the reaction conditions; the oxygen supply system, through the cooperation of a three-way valve, a high-pressure circulating pump, and a separation box, realizes the recycling of oxidant and the separation of waste gas, improving oxidation efficiency and reducing operating costs; the design of high-temperature resistant sealing rings, graphite sealing packing, wear-resistant alloy steel annular gate plate, heat insulation layer, and explosion-proof control box comprehensively improves the reliability and safety of the device in a high-pressure chemical environment.

[0039] Example 2, as Figure 4 , Figure 5 , Figure 6 and Figure 8As shown, based on Embodiment 1, it also includes a sealing sleeve 8 installed at the bottom of the high-pressure tank 1, a nozzle 7 that can be vertically inserted into the sealing sleeve 8, one end of the push cylinder 9 connected to the bottom of the high-pressure tank 1, the other end of the push cylinder 9 connected to the nozzle 7, and the nozzle 7 connected to the annular gate 5 through a bracket; it also includes multiple bearing seats 10 installed on the lower circumference of the inner liner 4, the upper ends of multiple levers 11 respectively rotatably connected to multiple bearing seats 10, the middle parts of multiple levers 11 respectively rotatably connected to the upper ends of multiple push rods 12, the lower ends of multiple push rods 12 rotatably connected to the outer side wall of the annular gate 5, and the multiple levers 11 located on the outer side of the annular gate 5.

[0040] It is important to understand that by setting a sealing sleeve 8 to improve sealing, the piston rod of the push cylinder 9 extends and retracts to drive the nozzle 7 to rise and fall. When the nozzle 7 rises, it drives the annular gate 5 to rise, causing the annular gate 5 to open the feeding gap below the inner liner 4. When the nozzle 7 falls, it drives the annular gate 5 to fall, causing the annular gate 5 to close the feeding gap below the inner liner 4, thus driving the annular gate 5. When the annular gate 5 rises, it drives multiple push rods 12 to rise, and the multiple push rods 12 push the lower ends of multiple levers 11 into the preheating chamber. When the annular gate 5 falls, it drives multiple push rods 12 to fall, and the multiple push rods 12 bring the lower ends of multiple levers 11 closer to the annular gate 5, thereby causing the multiple levers 11 to swing around multiple bearing seats 10, so that the multiple levers 11 can divide the preheated furfural residue, which is beneficial to breaking up the furfural residue and improving the processing efficiency.

[0041] As an alternative, the push cylinder 9 can be replaced with an electric push rod or a hydraulic cylinder to adapt to different power source conditions; the sealing sleeve 8 can be replaced with a mechanical seal or a packing seal to improve the seal life; in addition, the piston rod of the push cylinder 9 is exposed outside the high-pressure tank 1, and in this embodiment, a retractable dustproof corrugated sleeve (not shown in the figure) is provided on its outer side to prevent dust and corrosive gases from entering; the rotating part of the bearing housing 10 is provided with a corrosion-resistant bearing and filled with high-temperature resistant grease; a self-lubricating bushing is provided at the hinge of the lever 11 and the push rod 12.

[0042] During operation, based on Example 1, the piston rod of the push cylinder 9 extends and retracts to drive the nozzle 7 to rise and fall. The nozzle 7 drives the annular gate 5 to rise and fall synchronously through the bracket, thereby controlling the opening and closing of the feeding gap. During the rising and falling of the annular gate 5, the annular gate 5 drives the lever 11 to swing through the push rod 12. The lever 11 divides and disperses the furfural residue in the preheating chamber, making the furfural residue more uniform before entering the treatment chamber, which is beneficial to the subsequent hydrolysis and oxidation reaction.

[0043] Compared with the prior art, the beneficial effects of this embodiment are as follows: the linkage structure of the push cylinder driving the nozzle and the annular gate realizes the automatic control of the feeding gap, which is simple and reliable to operate; the linkage structure of the lever and the push rod automatically disperses the furfural residue in the preheating chamber when the annular gate is raised and lowered, which improves the uniformity of the material and the processing efficiency; the design of dustproof corrugated sleeve, corrosion-resistant bearing and self-lubricating bushing extends the service life of the transmission components.

[0044] Example 3, as Figure 4 , Figure 5 and Figure 9 As shown, based on Embodiment 1, it also includes an air lift pipe 19 vertically installed in the middle of the internal processing chamber of the high-pressure tank 1. The lower end of the air lift pipe 19 is located above the output end of the nozzle 7, and the upper end of the air lift pipe 19 is located in the middle of the processing chamber. It also includes a screen basket 20 installed at the upper end of the air lift pipe 19. A large number of filter holes are provided on the side wall of the screen basket 20. A vent cover 21 is detachably installed on the upper end of the screen basket 20. A large number of filter holes are provided on the vent cover 21.

[0045] It is important to understand that when the oxidant sprayed from nozzle 7 pushes the furfural residue slurry upward, it enters the interior of the air lift pipe 19. This allows the air lift pipe 19 to constrain and guide the rising furfural residue slurry, ensuring more thorough contact between the furfural residue and the input oxidant. Furthermore, it intensifies the collision between the furfural residue and the high-pressure oxidant, further dispersing the residue and improving processing efficiency. After rising along the air lift pipe 19, the furfural residue slurry enters the screen basket 20. The water in the slurry is discharged through the first filter hole of the screen basket 20 and then circulates. The furfural residue accumulates in the screen basket 20, making thorough contact with the oxidant. As processing progresses, the furfural residue in the screen basket 20 gradually decomposes into waste gas and ash. The waste gas is discharged through the second filter hole of the vent cover 21 and enters the oxygen supply system 6. The remaining ash is trapped in the screen basket 20. After a period of operation, the top cover 17 and the vent cover 21 are opened to remove the trapped ash from the screen basket 20, further improving processing efficiency.

[0046] As an alternative, the air lift pipe 19 can be replaced with a venturi tube or a spiral guide pipe to enhance the gas-liquid mixing effect; the filter holes one of the sieve basket 20 and the filter holes two of the vent cover 21 can use different pore diameters to intercept ash particles of different sizes respectively; in addition, a sealing gasket is provided at the connection between the vent cover 21 and the sieve basket 20 to prevent untreated gas from bypassing; the sieve basket 20 is made of corrosion-resistant stainless steel, and the sieve basket 20 and the air lift pipe 19 are detachably threaded for easy cleaning.

[0047] During operation, based on Example 1, the high-pressure oxidant sprayed from the nozzle 7 pushes the furfural residue slurry upward along the air lift pipe 19. During the upward process, the furfural residue and oxidant are violently mixed. After entering the screen basket 20, the water is discharged from the first filter hole, and the solid furfural residue remains in the screen basket 20 and continues to react. The generated waste gas is discharged from the second filter hole of the vent cover 21, and the ash is retained in the screen basket 20. After the treatment is completed, the vent cover 21 can be opened for cleaning.

[0048] Compared with the prior art, the beneficial effects of this embodiment are as follows: the rising slurry is constrained and guided by the air lifting pipe, which enhances the contact and collision between furfural residue and oxidant and improves the reaction efficiency; the filtration structure of the screen basket and the vent cover realizes gas-solid separation, effectively intercepts ash and discharges waste gas, which facilitates subsequent cleaning and maintenance; the sealing gasket and detachable connection design ensure the sealing performance and ease of maintenance of the device.

[0049] like Figures 1 to 9 As shown, the present invention discloses a wet deep treatment device for furfural residue. During operation, the furfural residue is first fed into the preheating chamber between the inner tank 4 and the high-pressure tank 1 through the feed pipe 2. At this time, the previously preheated furfural residue is processed in the treatment chamber inside the inner tank 4. The high-temperature medium flowing in the spiral coil 14 heats the furfural residue slurry in the treatment chamber through the inner tank 4, while the residual heat of the inner tank 4 preheats the furfural residue slurry in the preheating chamber. After the furfural residue slurry in the treatment chamber is processed, it is then... The liquid outlet pipe 3 discharges from the treatment chamber of the high-pressure tank 1. The push cylinder 9 drives the nozzle 7 to rise. The nozzle 7, through the support, drives the annular gate 5 to rise, opening the feeding gap between the inner liner 4 and the bottom of the high-pressure tank 1. This allows the preheated furfural residue slurry in the preheating chamber to enter the treatment chamber inside the inner liner 4 through the feeding gap. Oxidant or water is introduced into the preheating chamber through the replenishment pipe 16, pushing the residual furfural residue in the preheating chamber into the treatment chamber. After feeding is completed, the annular gate 5 descends to close the feeding gap, and the spiral coil 1... The high-temperature medium in tank 4 heats the furfural residue slurry in the treatment chamber to a specified temperature through the inner tank 4. Simultaneously, the oxygen supply system 6 operates, injecting oxidant into the bottom of the treatment chamber through the nozzle 7 to maintain a specified pressure in the treatment chamber of the high-pressure tank 1. The oxidant injected into the treatment chamber through the nozzle 7 flows upward along the air lift pipe 19 to the screen basket 20. Water in the furfural residue slurry is discharged through the filter holes of the screen basket 20 and then circulates. The furfural residue accumulates in the screen basket 20 and comes into full contact with the oxidant. The furfural residue is heated to a high temperature... Hydrolysis and oxidation occur simultaneously in the environment. As the treatment progresses, the furfural residue in the sieve basket 20 gradually decomposes into waste gas and ash. The waste gas is discharged through the filter hole 2 of the vent cover 21 and enters the oxygen supply system 6. The remaining ash is intercepted in the sieve basket 20. When the furfural residue in the treatment chamber is finished, the oxygen supply system 6 is stopped. After depressurization, the residual liquid and ash of the furfural residue are discharged through the liquid outlet pipe 3. During this process, the next batch of furfural residue is preheated in the preheating chamber, thus realizing the efficient wet deep treatment of furfural residue in a dual-station manner.

[0050] The main beneficial effects achieved by this invention include:

[0051] 1. The high-pressure tank is divided into a preheating chamber and a processing chamber by the inner liner. The heating mechanism of the inner liner is used to heat the processing chamber and preheat the preheating chamber with residual heat at the same time, realizing continuous operation of dual stations and significantly improving work efficiency.

[0052] 2. The annular gate plate controls the feeding gap, and in conjunction with the pushing action of the supplementary pipe, it realizes automatic feeding and residue cleaning of furfural residue;

[0053] 3. The automatic control of the feeding gap is achieved through the linkage structure of the push cylinder driving the nozzle and the annular gate, which is simple and reliable to operate.

[0054] 4. The linkage structure of the lever and push rod automatically disperses the furfural residue in the preheating chamber when the annular gate is raised and lowered, which improves the uniformity of the material and the processing efficiency.

[0055] 5. By constraining and guiding the rising slurry through the air-lift pipe, the contact and collision between furfural residue and oxidant are enhanced, thereby improving the reaction efficiency.

[0056] 6. The filtration structure of the sieve basket and the vent cover achieves gas-solid separation, effectively intercepting ash and discharging waste gas, which facilitates subsequent cleaning and maintenance.

[0057] Although embodiments of the present invention have been shown and described, it should be understood that the scope of protection of the present invention is not limited to the specific embodiments disclosed, but rather allows for changes, modifications, substitutions, and variations without departing from the principles of the present invention. For example, the heating mechanism may be replaced with an electric heating rod or electromagnetic induction heating to adapt to different heat source conditions; the push cylinder may be replaced with an electric push rod or a hydraulic cylinder to adapt to different power source conditions; and the air lifting pipe may be replaced with a venturi tube or a spiral guide tube to enhance the gas-liquid mixing effect. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0058] The furfural residue wet deep treatment equipment of the present invention uses common mechanical methods for installation, connection, or setting. Any method that can achieve its beneficial effects can be implemented. The high-pressure tank 1, feed pipe 2, liquid outlet pipe 3, inner liner 4, annular gate 5, oxygen supply system 6, spray pipe 7, sealing sleeve 8, push cylinder 9, lever 11, high-temperature pipe 13, spiral coil 14, low-temperature pipe 15, replenishment pipe 16, top cover 17, pressure sensor 18, air lifting pipe 19, screen basket 20, vent cover 21, high-pressure circulation pump 23, three-way valve 25, oxidant generator 28, and partition 30 of the furfural residue wet deep treatment equipment of the present invention are commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0059] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A wet deep treatment device for furfural residue, comprising a high-pressure tank (1), the high-pressure tank (1) having an internal chamber, a feed pipe (2) installed on the middle side wall of the high-pressure tank (1), and a liquid outlet pipe (3) installed at the center of the bottom of the high-pressure tank (1), the liquid outlet pipe (3) being connected to the bottom of the chamber; characterized in that, It also includes an inner liner (4) installed in the center of the chamber of the high-pressure tank (1), a heating mechanism on the inner liner (4), the upper edge of the inner liner (4) connected to the middle inner wall of the high-pressure tank (1), a feeding gap between the lower end of the inner liner (4) and the bottom wall of the high-pressure tank (1), a preheating chamber between the inner liner (4) and the inner wall of the high-pressure tank (1), a feeding pipe (2) connected to the preheating chamber, the inside of the inner liner (4) being the processing chamber, an annular gate (5) being installed at the bottom of the inner liner (4) in a liftable manner, the annular gate (5) being used to open or close the feeding channel, a nozzle (7) being installed at the output end of the oxygen supply system (6), the output end of the nozzle (7) extending into the bottom of the processing chamber through the bottom of the high-pressure tank (1), the input end of the oxygen supply system (6) being connected to the top of the processing chamber of the high-pressure tank (1), and the oxygen supply system (6) being used to input oxidant into the processing chamber.

2. The furfural residue wet deep treatment equipment as described in claim 1, characterized in that, It also includes a sealing sleeve (8) installed at the bottom of the high pressure tank (1), a nozzle (7) that can be lifted and inserted into the sealing sleeve (8), one end of the push cylinder (9) connected to the bottom of the high pressure tank (1), the other end of the push cylinder (9) connected to the nozzle (7), and the nozzle (7) connected to the annular gate (5) through the bracket.

3. The furfural residue wet deep treatment equipment as described in claim 2, characterized in that, It also includes multiple bearing seats (10) installed on the lower circumference of the inner liner (4), multiple levers (11) with their upper ends rotatably connected to the multiple bearing seats (10), multiple levers (11) with their middle parts rotatably connected to the upper ends of multiple push rods (12), multiple push rods (12) with their lower ends rotatably connected to the outer wall of the annular gate (5), and multiple levers (11) located on the outer side of the annular gate (5).

4. The furfural residue wet deep treatment equipment as described in claim 1, characterized in that, The heating mechanism includes a spiral coil (14) installed inside the inner liner (4), the output end of the high temperature tube (13) is connected to the lower end of the spiral coil (14), the input end of the high temperature tube (13) extends out of the outside of the high pressure tank (1), the input end of the low temperature tube (15) is connected to the upper end of the spiral coil (14), and the output end of the low temperature tube (15) extends out of the outside of the high pressure tank (1).

5. The furfural residue wet deep treatment equipment as described in claim 1, characterized in that, It also includes a supplementary pipe (16) installed on the side wall of the high-pressure tank (1), with the output end of the supplementary pipe (16) extending into the upper part of the preheating chamber between the inner liner (4) and the high-pressure tank (1).

6. The furfural residue wet deep treatment equipment as described in claim 1, characterized in that, It also includes an opening on the top of the high pressure tank (1), a removable and sealed cover (17) installed on the opening of the high pressure tank (1), and a pressure sensor (18) installed on the cover (17), with the probe of the pressure sensor (18) extending into the top of the processing chamber of the high pressure tank (1).

7. The furfural residue wet deep treatment equipment as described in claim 1, characterized in that, It also includes a lift pipe (19) that is vertically installed in the middle of the processing chamber inside the high-pressure tank (1). The lower end of the lift pipe (19) is located above the output end of the nozzle (7), and the upper end of the lift pipe (19) is located in the middle of the processing chamber.

8. The furfural residue wet deep treatment equipment as described in claim 7, characterized in that, It also includes a sieve basket (20) installed at the upper end of the air lifting pipe (19), a large number of filter holes are provided on the side wall of the sieve basket (20), and a vent cover (21) is detachably installed on the upper port of the sieve basket (20), and a large number of filter holes are provided on the vent cover (21).

9. The furfural residue wet deep treatment equipment as described in claim 1, characterized in that, The oxygen supply system (6) includes an oxygen delivery pipe (22) whose output end is connected to the input end of a nozzle (7), an oxygen delivery pipe (22) whose input end is connected to the output port of a high-pressure circulating pump (23), an high-pressure circulating pump (23) whose input port is connected to the output end of an oxygen inlet pipe (24), an oxygen inlet pipe (24) whose input end is connected to the first channel of a three-way valve (25), a three-way valve (25) whose second channel is connected to the output end of a return pipe (26), a return pipe (26) whose output end is connected to the top of the processing chamber of a high-pressure tank (1), a three-way valve (25) whose third channel is connected to the output end of an oxygen outlet pipe (27), and an oxygen outlet pipe (27) whose input end is connected to the output port of an oxidant generator (28).

10. The furfural residue wet deep treatment equipment as described in claim 9, characterized in that, It also includes a separation box (29) installed on the return pipe (26), a separation chamber is set inside the separation box (29), multiple baffles (30) are installed in the separation chamber, and state gas separation packing is installed in the separation chamber.

Images