Pyrolysis oil cooling device for microwave cracking furnace

Abstract

The utility model discloses a pyrolysis oil cooling device for a microwave cracking furnace, and particularly relates to the technical field of pyrolysis oil cooling, which comprises a water inlet pipe, the water inlet pipe is fixed at the top of a cooling box, one side of the top of the cooling box far away from the water inlet pipe is fixedly communicated with a water outlet pipe, and a heat exchange pipeline is fixedly communicated between the water inlet pipe and the water outlet pipe. Fixing baffles are fixedly connected to the two sides of the inner wall of the cooling box, a connecting pipe is fixedly connected to the bottom of the cooling box, and one end of the connecting pipe fixedly communicates with a fixing box. By arranging the circulating heat exchange mechanism and the plurality of fixed baffles, the flowing speed of pyrolysis oil is slowed down, more sufficient heat exchange is ensured, circulating cooling of the pyrolysis oil is realized, the temperature of the pyrolysis oil is continuously reduced, meanwhile, the heat of the pyrolysis oil is effectively recovered, the heat can be reused in other links, and the utilization rate of the pyrolysis oil is improved. The energy utilization efficiency is improved, the energy consumption is reduced, impurities in the pyrolysis oil are filtered, and the impurities are prevented from damaging equipment.

Description

Technical Field

[0001] This utility model relates to the field of pyrolysis oil cooling technology, and more specifically, to a pyrolysis oil cooling device for a microwave pyrolysis furnace. Background Technology

[0002] With the continuous growth of energy demand and increasing emphasis on environmental protection, microwave pyrolysis technology has received widespread attention in the fields of waste treatment and resource recycling. During the microwave pyrolysis process, a large amount of pyrolysis oil is generated, which needs to be cooled before it can be further processed and utilized.

[0003] A search revealed that Chinese Patent CN221309594U discloses an oil separation and cooling device for cracked oil products. The device addresses the issue that its cooling operation relies on two condensation towers, and when only one condensation is needed for the cracked oil product, the overall cooling cannot be effectively controlled. This prevents the cooling from being tailored to specific usage requirements during the condensation process. The patent proposes a device that allows for cooling control based on specific cooling needs.

[0004] After cooling, residual heat remains in the cracked oil because the cracked oil is not circulated for cooling. Its cooling effect is limited, and it is also inadequate in terms of heat recovery and utilization. A large amount of heat is wasted, which increases energy consumption and production costs. Utility Model Content

[0005] In order to overcome the problems and defects in the prior art, this utility model provides a pyrolysis oil cooling device for a microwave pyrolysis furnace to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pyrolysis oil cooling device for a microwave pyrolysis furnace, comprising a cooling box, an oil inlet pipe fixedly connected to the top of the cooling box, and a circulating heat exchange mechanism provided inside the cooling box;

[0007] The circulating heat exchange mechanism includes an inlet pipe fixed to the top of the cooling tank. An outlet pipe is fixedly connected to the top of the cooling tank away from the inlet pipe. A heat exchange pipe is fixedly connected between the inlet pipe and the outlet pipe. Fixed baffles are fixedly connected to both sides of the inner wall of the cooling tank. A connecting pipe is fixedly connected to the bottom of the cooling tank. One end of the connecting pipe is fixedly connected to a fixed box. A fixed pipe is fixedly connected to one side of the fixed box. A valve is fixedly installed on one side of the fixed pipe. A first circulation pipe is fixedly connected to the top of the fixed pipe. A circulation pump is fixedly installed on the top of the first circulation pipe. A second circulation pipe is fixedly connected between the circulation pump and the cooling tank.

[0008] Preferably, a filter screen is fixedly installed on the inner wall of the fixed box, and an inclined stop block is fixedly connected to one side of the inner wall of the fixed box.

[0009] Preferably, a drain pipe is fixedly connected to the bottom of the fixed box, and an electromagnetic valve is fixedly installed inside the drain pipe.

[0010] Preferably, the cross-sectional shape of the oil inlet pipe, water inlet pipe, connecting pipe, and second circulation pipe is L-shaped, and the bottom of the oil inlet pipe and water inlet pipe both penetrate the cooling box and extend into the interior of the cooling box.

[0011] Preferably, an oil drain pipe is fixedly connected to one side of the valve.

[0012] Preferably, the heat exchange pipe is fixedly connected to the fixed baffle, and the heat exchange pipe can be made of aluminum alloy.

[0013] Preferably, a through groove is provided on the front surface of the fixed box, and a transparent through window is fixedly installed inside the through groove.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] By setting up a circulating heat exchange mechanism and using heat exchange pipes made of aluminum alloy, which have good thermal conductivity, the heat of the cracked oil can be effectively transferred to the cooling water in the pipes, achieving rapid cooling of the cracked oil. Multiple fixed baffles slow down the flow rate of the cracked oil, ensuring more thorough heat exchange and improving the heat exchange effect, further guaranteeing the cooling effect of the cracked oil. Through the circulating cooling system, the cooling water absorbs the heat of the cracked oil in the heat exchange pipes, flows out through the outlet pipe, and is then pumped back into the inlet pipe by the circulating pump through the first and second circulating pipes, realizing the circulating cooling of the cracked oil and continuously reducing the temperature of the cracked oil. At the same time, the heat of the cracked oil is effectively recovered, which can be reused in other stages, improving energy utilization efficiency and reducing energy consumption. The filter screen in the fixed box can filter impurities in the cracked oil, preventing impurities from entering the circulating system and avoiding the decrease in cooling efficiency and equipment failure caused by impurities clogging the heat exchange pipes or affecting the heat exchange effect. It also avoids the clogging of the circulating pump and valves.

[0016] The filter screen inside the fixed box filters impurities from the pyrolysis oil, preventing them from entering the circulation system. This avoids reduced cooling efficiency and equipment malfunctions caused by impurities clogging heat exchange pipes or affecting heat exchange performance. It also prevents clogging of the circulation pump and valves. The drain pipe and solenoid valve at the bottom of the fixed box allow impurities to be easily discharged when they accumulate on the filter screen. The inclined baffle allows water to flow more smoothly into the fixed pipe, ensuring smooth flow of the pyrolysis oil in the circulation system. This avoids problems such as localized overheating or uneven pressure caused by poor water flow, further improving the stability and reliability of the system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the rear view structure of this utility model.

[0019] Figure 3 This is a partial structural schematic diagram of the present invention.

[0020] Figure 4 This is a schematic diagram of the connection between the inlet pipe and the outlet pipe of this utility model.

[0021] Figure 5 This is a front cross-sectional view of the present invention.

[0022] The attached diagram is labeled as follows: 1. Cooling tank; 2. Oil inlet pipe; 3. Water inlet pipe; 4. Water outlet pipe; 5. Heat exchange pipe; 6. Fixed baffle; 7. Connecting pipe; 8. Fixed box; 9. Fixed pipe; 10. Valve; 11. First circulation pipe; 12. Circulation pump; 13. Second circulation pipe; 14. Filter screen; 15. Drain pipe; 16. Solenoid valve; 17. Inclined stop; 18. Oil drain pipe; 19. Through groove; 20. Transparent through window. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] As attached Figure 1-5 The microwave pyrolysis furnace cooling device shown includes a cooling box 1, an oil inlet pipe 2 fixedly connected to the top of the cooling box 1, and a circulating heat exchange mechanism inside the cooling box 1.

[0025] The circulating heat exchange mechanism includes an inlet pipe 3, which is fixed to the top of the cooling box 1. An outlet pipe 4 is fixedly connected to the top of the cooling box 1 away from the inlet pipe 3. A heat exchange pipe 5 is fixedly connected between the inlet pipe 3 and the outlet pipe 4. Fixed baffles 6 are fixedly connected to both sides of the inner wall of the cooling box 1. A connecting pipe 7 is fixedly connected to the bottom of the cooling box 1. One end of the connecting pipe 7 is fixedly connected to a fixed box 8. A fixed pipe 9 is fixedly connected to one side of the fixed box 8. A valve 10 is fixedly installed on one side of the fixed pipe 9. A first circulation pipe 11 is fixedly connected to the top of the fixed pipe 9. A circulation pump 12 is fixedly installed on the top of the first circulation pipe 11. A second circulation pipe 13 is fixedly connected between the circulation pump 12 and the cooling box 1.

[0026] As attached Figure 5 As shown, a filter screen 14 is fixedly installed on the inner wall of the fixed box 8, and an inclined baffle 17 is fixedly connected to one side of the inner wall of the fixed box 8 to facilitate the filtration of dirt and impurities in the cracked oil and avoid affecting the use of the equipment. At the same time, the inclined baffle 17 facilitates the sliding of dirt and impurities.

[0027] As attached Figure 1 , 2 As shown in Figures 3 and 5, a drain pipe 15 is fixedly connected to the bottom of the fixed box 8. An electromagnetic valve 16 is fixedly installed inside the drain pipe 15 to facilitate the discharge of filtered dirt and impurities through the drain pipe 15.

[0028] As attached Figure 1-5 As shown, the cross-sectional shape of the oil inlet pipe 2, water inlet pipe 3, connecting pipe 7, and second circulation pipe 13 is all set to L-shape. The bottom of the oil inlet pipe 2 and water inlet pipe 3 both penetrate through the cooling box 1 and extend into the interior of the cooling box 1, so that water can flow through the water inlet pipe 3, water outlet pipe 4, and heat exchange pipe 5 for heat exchange, which facilitates the recovery of heat in the cracked oil.

[0029] As attached Figure 1 , 2 As shown in Figures 3 and 5, a drain pipe 18 is fixedly connected to one side of valve 10 to facilitate the discharge of cooled cracked oil.

[0030] As attached Figure 4 , 5 As shown, the heat exchange pipe 5 is fixedly connected to the fixed baffle 6. The heat exchange pipe 5 can be made of aluminum alloy to ensure the heat exchange effect between the cracked oil and water.

[0031] As attached Figure 1 , 3 As shown, a through groove 19 is provided on the front surface of the fixed box 8, and a transparent through window 20 is fixedly installed inside the through groove 19 to facilitate observation of the amount of dirt filtered inside the fixed box 8, so as to avoid excessive dirt affecting the flow of cracked oil.

[0032] Working principle of this utility model: In the microwave pyrolysis furnace cooling device provided by this utility model, the pyrolysis oil enters the cooling tank 1 through the oil inlet pipe 2. The cross-sectional shape of the oil inlet pipe 2 is L-shaped, and its bottom penetrates through the cooling tank 1 and extends into the interior of the cooling tank 1, ensuring that the pyrolysis oil can smoothly enter the cooling tank 1. Inside the cooling tank 1, the pyrolysis oil exchanges heat with the heat exchange pipe 5. The heat exchange pipe 5 is made of aluminum alloy, which has good thermal conductivity and can effectively transfer the heat of the pyrolysis oil to the cooling water inside the pipe. The heat exchange pipe 5 is fixedly connected to the fixed baffles 6 on both sides of the inner wall of the cooling tank 1. Multiple fixed baffles 6 slow down the flow rate of the pyrolysis oil, ensuring more complete heat exchange and improving the heat exchange effect. Cooling water enters from the water inlet pipe 3. The water enters the heat exchange pipe 5. The inlet pipe 3 is also L-shaped and fixed to the top of the cooling box 1. Its bottom penetrates the cooling box 1 and extends into the interior of the cooling box 1, connecting with the heat exchange pipe 5. The cooling water flows in the heat exchange pipe 5, and its temperature rises after absorbing the heat of the cracked oil. The heated cooling water flows out of the heat exchange pipe 5 from the outlet pipe 4, realizing heat recovery and initial cooling of the cracked oil. Then, by closing the valve 10, the water flows from the fixed pipe 9 into the first circulation pipe 11. The circulation pump 12 at the top of the first circulation pipe 11 is started, pumping the water back into the inlet pipe 3 at the top of the cooling box 1 through the second circulation pipe 13, realizing the circulation cooling of the cracked oil, further ensuring the cooling effect of the cracked oil, while ensuring the heat exchange effect, and facilitating the full recovery and utilization of heat.

[0033] A filter screen 14 is fixedly installed on the inner wall of the fixed box 8 to filter impurities in the cracked oil. When heated water enters the fixed box 8, the filter screen 14 can block impurities and prevent them from entering the circulation system and affecting the heat exchange effect. The inclined baffle 17 on one side of the inner wall of the fixed box 8 plays a guiding role, allowing the water to flow more smoothly to the fixed pipe 9. The bottom of the fixed box 8 is fixedly connected to the drain pipe 15. When a certain amount of impurities accumulate on the filter screen 14, the solenoid valve 16 inside the drain pipe 15 can be opened to discharge the impurities from the fixed box 8. A through groove 19 is opened on the front surface of the fixed box 8. A transparent through window 20 is fixedly installed inside the through groove 19. The internal condition of the fixed box 8 can be observed through the transparent through window 20, such as the degree of blockage of the filter screen 14 and the water level, so as to carry out maintenance and cleaning in time.

[0034] In conclusion, the above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A pyrolysis oil cooling device for a microwave pyrolysis furnace, comprising a cooling box (1), characterized in that: The top of the cooling box (1) is fixedly connected to an oil inlet pipe (2), and the cooling box (1) is equipped with a circulating heat exchange mechanism. The circulating heat exchange mechanism includes an inlet pipe (3), which is fixed to the top of the cooling box (1). An outlet pipe (4) is fixedly connected to the top of the cooling box (1) away from the inlet pipe (3). A heat exchange pipe (5) is fixedly connected between the inlet pipe (3) and the outlet pipe (4). Fixed baffles (6) are fixedly connected to both sides of the inner wall of the cooling box (1). A connecting pipe (7) is fixedly connected to the bottom of the cooling box (1). A fixed box (8) is fixedly connected to one end of the connecting pipe (7). A fixed pipe (9) is fixedly connected to one side of the fixed box (8). A valve (10) is fixedly installed on one side of the fixed pipe (9). A first circulation pipe (11) is fixedly connected to the top of the fixed pipe (9). A circulation pump (12) is fixedly installed on the top of the first circulation pipe (11). A second circulation pipe (13) is fixedly connected between the circulation pump (12) and the cooling box (1).

2. The pyrolysis oil cooling device for a microwave pyrolysis furnace according to claim 1, characterized in that: A filter screen (14) is fixedly installed on the inner wall of the fixed box (8), and an inclined stop block (17) is fixedly connected to one side of the inner wall of the fixed box (8).

3. The pyrolysis oil cooling device for a microwave pyrolysis furnace according to claim 1, characterized in that: The bottom of the fixed box (8) is fixedly connected to a drain pipe (15), and an electromagnetic valve (16) is fixedly installed inside the drain pipe (15).

4. The pyrolysis oil cooling device for a microwave pyrolysis furnace according to claim 1, characterized in that: The cross-sectional shape of the oil inlet pipe (2), water inlet pipe (3), connecting pipe (7) and second circulation pipe (13) is set to L-shape. The bottom of the oil inlet pipe (2) and water inlet pipe (3) both penetrate the cooling box (1) and extend into the interior of the cooling box (1).

5. The pyrolysis oil cooling device for a microwave pyrolysis furnace according to claim 1, characterized in that: The valve (10) is fixedly connected to an oil drain pipe (18) on one side.

6. The pyrolysis oil cooling device for a microwave pyrolysis furnace according to claim 1, characterized in that: The heat exchange pipe (5) is fixedly connected to the fixed baffle (6), and the heat exchange pipe (5) can be made of aluminum alloy.

7. The pyrolysis oil cooling device for a microwave pyrolysis furnace according to claim 1, characterized in that: The front surface of the fixed box (8) is provided with a through groove (19), and a transparent through window (20) is fixedly installed inside the through groove (19).

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