Pyrolysis surge drum apparatus

Abstract

The utility model discloses a pyrolysis buffer bucket device relates to pyrolysis technical field, especially a kind of about the oil gas generated by the pyrolysis of waste plastic material enters buffer bucket, and the pyrolysis buffer bucket device of the reaction and the stable time of oil gas can be increased by buffer bucket, it mainly by the oil gas sent out by pyrolysis reaction chamber cracking is sent to the internal diffusion of buffer bucket via oilification conveying pipe, by multiple buffer bucket and the blocking of multiple baffle arrangement in buffer bucket, so that oil body molecular specific gravity different can be separated, and the oil body of molecular specific gravity heavier is blocked by baffle, can backflow to pyrolysis reaction furnace again pyrolysis, so, because buffer bucket can increase the reaction and the stable time of oil gas, and then can effectively collect molecular recombination collection oil body.

Description

Technical Field

[0001] This utility model relates to the field of thermal pyrolysis technology, and in particular to a thermal pyrolysis buffer tank device. Background Technology

[0002] Waste materials generated during the manufacturing process of plastic fibers, plastic products, and other related industries, as well as waste plastics recovered by recycling plants, are subjected to pyrolysis in an anaerobic or anaerobic environment. This process involves heating long-chain organic compounds to break their molecular bonds, ultimately decomposing them into smaller molecular structures as byproducts (such as fuel oil) and water. Pyrolysis technology involves feeding waste plastics into oiling equipment, where they undergo pyrolysis, vaporization, condensation, separation, and distillation to obtain plastic pyrolysis oil. This oil is then further processed through distillation and condensation to convert it into liquid or gaseous fuel oil for industrial use.

[0003] For general thermal decomposition treatment, please refer to [link / reference]. Figure 1 As shown, the waste plastic is mainly fed into the feed port 11 of a feeding device 10, and then conveyed by the conveying screw 12 into the feed port of a pyrolysis reactor 20 and into the pyrolysis reaction chamber 21. A heating device 22 is provided on the periphery of the pyrolysis reaction chamber 21. An oiling output pipe 23 is provided on the upper part of the pyrolysis reaction chamber 21 to discharge the gas and pyrolysis oil after pyrolysis. A conveying pipe 24 is provided at the bottom of the pyrolysis reaction chamber 21 to discharge the carbon black produced after the pyrolysis reaction. A buffer tank 31 is connected to one end of the oiling output pipe 23. An oil and gas outlet 311 is provided above the buffer tank 31, and an oil outlet 312 is provided below it.

[0004] Thus, waste plastic is conveyed into the pyrolysis reaction chamber 21 by the conveying screw 12 of the feeding device 10. Using pyrolysis technology, the plastic waste undergoes a pyrolysis reaction under the high temperature and oxygen-deficient conditions of the pyrolysis furnace. The carbon black produced after pyrolysis is discharged out of the furnace through the conveying pipe 24 at the discharge end. At this time, the oil and gas can enter the buffer tank 31 through the oil output pipe 23. However, there are still some un-pyrolyzed small molecule oil bodies, such as paraffin, in the oil and gas entering the buffer tank 31. Some of these un-pyrolyzed oil bodies will be discharged from the oil and gas outlet 311, and some oil bodies will be collected from the oil outlet 312. Thus, the incompletely pyrolyzed oil bodies cannot be recovered into the pyrolysis reaction chamber 21 in time, resulting in poor efficiency of the pyrolysis. Utility Model Content

[0005] Therefore, based on his many years of experience in processing and manufacturing various household waste, waste plastics and waste rubber, and in view of the environmental pollution caused by incineration and landfill, and in view of the urgent need for alternative energy, the inventor of this case actively researched and improved the technology, hoping to provide a technology that can recover waste through pyrolysis and achieve the production and collection of gas and pyrolysis oil. Through multiple trials and modifications, this utility model was finally realized.

[0006] The main objective of this invention is to provide a thermal pyrolysis buffer tank device. This device uses multiple buffer tanks and multiple baffles inside the buffer tanks to separate oil molecules with different specific gravities. The oil molecules with heavier specific gravities are blocked by the baffles and can flow back to the thermal pyrolysis reactor for further pyrolysis. Furthermore, the multiple buffer tanks can increase the reaction and stabilization time of the oil and gas, thus effectively collecting and recombining the oil molecules in the thermal pyrolysis buffer tank device.

[0007] To achieve the above-mentioned technical objectives, this utility model provides a pyrolysis buffer tank device, mainly consisting of a feed inlet on the pyrolysis reactor. The feed inlet connects to the discharge pipe of the primary pyrolysis machine, allowing molten plastic waste to enter the pyrolysis reaction chamber. A heating device is installed around the periphery of the pyrolysis reactor. The upper part of the pyrolysis reactor has an oil output pipe and an oil inflow pipe, while the bottom of the pyrolysis reactor has a conveying pipe, including:

[0008] A buffer tank group, the buffer tank group mainly consists of a first buffer tank and a second buffer tank, wherein:

[0009] A first buffer tank is provided with a first capture chamber. The first capture chamber contains a first oil inlet pipe and a first oil outlet pipe. The first oil inlet pipe is connected to the oil outlet pipe of the pyrolysis reactor and extends into the first capture chamber. The first capture chamber is provided with a baffle. The bottom of the first capture chamber is provided with a first oil outlet. The first oil outlet is connected to the oil inlet pipe of the pyrolysis reactor.

[0010] A second buffer tank is provided, and the second buffer tank is provided with a second capture chamber. The second capture chamber is provided with a second oiling input pipe and a second oiling output pipe. The second oiling input pipe is connected to the first oiling output pipe of the first buffer tank and can extend into the second capture chamber. The second capture chamber is provided with a baffle. The bottom end of the second capture chamber is provided with a second oil outlet, and the second oil outlet is connected to the first oil outlet.

[0011] As a further improvement to the above technical solution, the first oiling input pipe extends into the first capture chamber near the bottom.

[0012] As a further improvement to the above technical solution, the second oiling input pipe extends into the second capture chamber near the bottom.

[0013] As a further improvement to the above technical solution, the buffer bucket group has two or more buffer buckets.

[0014] As a further improvement to the above technical solution, the baffle in the capture chamber of the first buffer bucket is one or more.

[0015] As a further improvement to the above technical solution, the first capture chamber is provided with a semi-circular upper baffle and a lower baffle, and the upper baffle and the lower baffle are arranged with staggered upper and lower notches.

[0016] As a further improvement to the above technical solution, the baffle in the capture chamber of the second buffer bucket is one or more.

[0017] As a further improvement to the above technical solution, the second capture chamber is provided with a semi-circular upper baffle and a lower baffle, the upper baffle and the lower baffle being staggered with upper and lower notches.

[0018] As a further improvement to the above technical solution, a first heating pipe is wrapped around the bottom end of the first oil outlet.

[0019] As a further improvement to the above technical solution, a second heating pipe is wrapped around the bottom end of the second oil outlet, and the second heating pipe is connected to the first heating pipe of the first capture chamber. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 This is a plan view of a commonly used waste plastic pyrolysis device.

[0022] Figure 2 This is a three-dimensional assembly diagram of the present invention.

[0023] Figure 3 This is a schematic diagram of the planar assembly of this utility model.

[0024] Figure 4 This is a three-dimensional cross-sectional view of the buffer bucket assembly of this utility model.

[0025] Figure 5 This is a schematic cross-sectional view of the buffer bucket assembly of this utility model.

[0026] Figure 6 This utility model Figure 3 AA sectional view.

[0027] Figure 7 This utility model Figure 3 BB cross-sectional view.

[0028] Figure 8 This is a preferred embodiment of the buffer tank of this utility model.

[0029] In the diagram: 10-Feeding device; 11-Inlet; 12-Conveying screw; 20-Pyrolysis reactor; 21-Pyrolysis reaction chamber; 22-Heating device; 23-Oil output pipe; 24-Conveying pipe; 31-Buffer tank; 311-Oil and gas outlet; 312-Oil outlet; 40-Primary stage pyrolysis machine; 41-Frame; 42-Machine body; 43-Feed hopper; 44-Heating layer; 45-Discharge pipe; 50-Pyrolysis reactor; 51-Inlet; 52-Heating device; 53-Oil output pipe; 54-Conveying pipe; 55- 60 - Oil inlet pipe; 61 - Buffer tank assembly; 61 - First buffer tank; 611 - First capture chamber; 612 - First oil inlet pipe; 613 - First oil outlet pipe; 614 - First upper baffle; 615 - First lower baffle; 616 - First oil outlet; 617 - First heating pipe; 62 - Second buffer tank; 621 - Second capture chamber; 622 - Second oil inlet pipe; 623 - Second oil outlet pipe; 624 - Second upper baffle; 625 - Second lower baffle; 626 - Second oil outlet; 627 - Second heating pipe. Detailed Implementation

[0030] To achieve the aforementioned technical objectives, the structural content and features of this utility model will be described in detail below with reference to the accompanying drawings. It is believed that this will enable a further understanding of the content of this utility model and its effects.

[0031] Please see Figures 2 to 7 As shown, the pyrolysis buffer tank device of this utility model mainly comprises a primary pyrolysis machine 40, a pyrolysis reactor 50, and a buffer tank assembly 60, wherein:

[0032] A primary pyrolysis machine 40 is provided, wherein a cylindrical machine body 42 is mounted on a frame 41. A conveying screw conveys the material inside the machine body 42. A feed hopper 43 is provided at the front of the machine body 42, which allows waste plastic conveyed by the conveyor belt to be fed into the machine body 42. Multiple heating layers 44 are covered on the outer diameter of the machine body 42. A discharge pipe 45 is connected to the end of the machine body 42.

[0033] A pyrolysis reactor 50 is provided with a feed port 51, which is connected to the discharge pipe 45 of the primary pyrolysis machine 40 and can allow molten plastic waste to enter the pyrolysis reaction chamber. A heating device 52 is provided on the periphery of the pyrolysis reactor 50. The upper part of the pyrolysis reactor 50 has an oiling output pipe 53 and an oil inflow pipe 55. The oiling output pipe 53 is used to discharge the oil and gas after pyrolysis. The bottom end of the pyrolysis reactor 50 is provided with a conveying pipe 54, which can discharge the carbon black produced after the pyrolysis reaction.

[0034] A buffer tank assembly 60, which mainly consists of a first buffer tank 61 and a second buffer tank 62, wherein:

[0035] A first buffer tank 61 is provided with a first capture chamber 611. The first capture chamber 611 contains a first oiling input pipe 612 and a first oiling output pipe 613. The first oiling input pipe 612 is connected to the oiling output pipe 53 of the pyrolysis reactor 50 and extends into one side of the first capture chamber 611 near the bottom. The first capture chamber 611 contains a semi-circular first upper baffle 614 and a first lower baffle 615. The first upper baffle 614 and the first lower baffle 615 are offset with upper and lower notches. The bottom of the first capture chamber 611 is provided with a first oil outlet 616. The first oil outlet 616 is connected to the oil inflow pipe 55 of the pyrolysis reactor 50. A first heating pipe 617 is wrapped around the bottom of the first oil outlet 616.

[0036] A second buffer tank 62 is provided, and the second buffer tank 62 is provided with a second capture chamber 621. The second capture chamber 621 contains a second oiling input pipe 622 and a second oiling output pipe 623. The second oiling input pipe 622 is connected to the first oiling output pipe 613 of the first buffer tank 61 and can extend into one side of the second capture chamber 621 near the bottom. The second capture chamber 621 is provided with a semi-circular second upper baffle 624 and a second lower baffle 625. The second upper baffle 624 and the second lower baffle 625 are staggered with upper and lower notches. The bottom end of the second capture chamber 621 is provided with a second oil outlet 626. A second heating pipe 627 is covered at the bottom end of the second oil outlet 626. The second heating pipe 627 is connected to the first heating pipe 617 of the first capture chamber 611.

[0037] In this way, waste materials generated during the production process of plastic fiber and plastic product manufacturing industries, as well as waste plastics recycled by resource recycling plants, are conveyed by conveyor belt to the feed hopper 43 of the body 42 of the primary pyrolysis machine 40 and enter the body 42. They are then conveyed to the discharge pipe 45 by the conveying screw. During the conveying process of the waste plastics in the body 42, the multiple heating layers 44 covering the outer diameter of the body 42 are heated (the temperature is controlled between 100°C and 280°C), so that the waste plastics in the body 42 can be gradually decomposed while being conveyed, and can reach the melting stage at the end of the body 42 (that is, the waste plastics become fluid).

[0038] At this time, the waste plastic in a fluid state is discharged from the discharge pipe 45 and enters the thermal cracking reaction chamber through the feed port 51 on the thermal cracking reactor 50. The temperature is heated to 300°C to 800°C by the heating device 52 set on the periphery of the thermal cracking reactor 50. The fluid waste plastic heats the long-chain organic compounds, causing their molecular bonds to break. Finally, it decomposes into smaller molecular structures, achieving the production of gas and pyrolysis oil, which is output through the oil output pipe 53. The carbon black produced by the thermal cracking is concentrated at the bottom of the cracking reaction chamber and is discharged by a conveying pipe 54.

[0039] Please see Figure 8 As shown, this is a preferred embodiment of the buffer tank group 60 of the present invention. In this embodiment, the oil and gas produced by the thermal cracking reactor 50 is discharged from its oiling output pipe 53 to the first buffer tank 61 of the fractionator 60, and discharged into the first capture chamber 611 near the bottom through its first oiling input pipe 612. It then flows towards the first oiling output pipe 613 of the first capture chamber 611. During the flow, the oil and gas will be blocked and collided by the first lower baffle 615 and flow towards the first upper baffle 614. It will then be blocked and collided by the first upper baffle 614, causing the oil and gas with smaller specific gravity molecules to flow towards the first oiling output pipe 613. The oil with larger specific gravity molecules will be blocked by the first upper baffle 614 and the first lower baffle 615 and flow towards the first oil outlet 616. It will be heated by the first heating pipe 617 of the first oil outlet 616, and thus maintain the fluid flow from the oil inflow pipe 55 back into the thermal cracking reactor 50.

[0040] The oil and gas in the first buffer tank 61 are discharged into the second capture chamber 621 of the second buffer tank 62 near the bottom through the second oiling inlet pipe 622, and flow towards the second oiling outlet pipe 623 of the second capture chamber 621. During the flow, the oil and gas will be blocked and collided by the second lower baffle 625 and flow towards the second upper baffle 624. It will be blocked again by the collision of the second upper baffle 624, so that the oil and gas with smaller specific gravity molecules will flow towards the second oiling outlet pipe 623, while the oil with larger specific gravity molecules will be blocked by the second upper baffle 624 and the second lower baffle 625 and flow towards the second oil outlet 626. It will be heated by the second heating pipe 627 of the second oil outlet 626, so that the fluid can be kept flowing from the oil inlet pipe 54 back into the thermal cracking reactor 50.

[0041] Thus, this utility model can achieve the following:

[0042] (1) By using multiple buffer tanks and multiple baffles inside the buffer tanks to block the flow, the molecules with different specific gravities can be separated. The oil with a higher specific gravity is blocked by the baffles and can flow back to the thermal cracking reactor for further cracking. The buffer tanks can increase the reaction and stabilization time of the oil and gas, thus effectively collecting the molecular recombination and collecting the oil.

[0043] (2) By covering the bottom end of the first oil outlet with a first heating pipe and the bottom end of the second oil outlet with a second heating pipe, the oil (such as paraffin) can be kept at the required temperature in fluid mode (about 150°C or above) and flow into the thermal cracking reactor through the oil inflow pipe, so that the backflowing oil will not solidify due to the shutdown of the thermal cracking reactor or other factors.

[0044] Furthermore, a buffer group 60 may have two or more buffer tanks, and each buffer tank may have one or more baffles in its capture chamber.

[0045] The above-described present invention is merely an example of the preferred embodiment. Those skilled in the art can make various modifications and implementations, but all such modifications and implementations should be included within the spirit and scope of the present invention.

[0046] In summary, this utility model, through the use of multiple buffer tanks and multiple baffles within the buffer tanks, separates molecules with different specific gravities. The oil with a heavier specific gravity is blocked by the baffles and can flow back to the thermal cracking reactor for further cracking. Furthermore, because the buffer tanks can increase the reaction and stabilization time of the oil and gas, they can effectively collect and recombine the oil. Whether it is a structural change or an improvement in efficiency, it is beyond doubt. Moreover, this utility model has not been seen in publications or publicly used before the application, and it has met the requirements for a patent application. Therefore, a patent application is filed in accordance with the law.

Claims

1. A pyrolysis buffer tank device, mainly comprising a feed inlet on a pyrolysis reactor, the feed inlet being connected to the discharge pipe of the primary pyrolysis machine, allowing molten plastic waste to enter the pyrolysis reaction chamber; a heating device is provided around the periphery of the pyrolysis reactor; an oil output pipe and an oil inflow pipe are located at the upper part of the pyrolysis reactor; and a conveying pipe is located at the bottom of the pyrolysis reactor. Its characteristic is that... include: A buffer tank group, the buffer tank group mainly consisting of a first buffer tank and a second buffer tank, wherein: A first buffer tank is provided with a first capture chamber. The first capture chamber contains a first oil inlet pipe and a first oil outlet pipe. The first oil inlet pipe is connected to the oil outlet pipe of the pyrolysis reactor and extends into the first capture chamber. The first capture chamber is provided with a baffle. The bottom of the first capture chamber is provided with a first oil outlet. The first oil outlet is connected to the oil inlet pipe of the pyrolysis reactor. A second buffer tank is provided, and the second buffer tank is provided with a second capture chamber. The second capture chamber is provided with a second oiling input pipe and a second oiling output pipe. The second oiling input pipe is connected to the first oiling output pipe of the first buffer tank and can extend into the second capture chamber. The second capture chamber is provided with a baffle. The bottom end of the second capture chamber is provided with a second oil outlet, and the second oil outlet is connected to the first oil outlet.

2. The pyrolysis buffer tank device according to claim 1, characterized in that, The first oiling input pipe extends into one side of the first capture chamber near the bottom.

3. The pyrolysis buffer tank device according to claim 1, characterized in that, The second oiling input pipe extends into one side of the second capture chamber near the bottom.

4. The pyrolysis buffer tank device according to claim 1, characterized in that, The buffer bucket group consists of two or more buffer buckets.

5. The pyrolysis buffer tank device according to claim 1, characterized in that, The first buffer tank contains one or more baffles in the capture chamber.

6. The pyrolysis buffer tank device according to claim 5, characterized in that, The first capture chamber is provided with a semi-circular upper baffle and a lower baffle, which are staggered with upper and lower notches.

7. The pyrolysis buffer tank device according to claim 1, characterized in that, The second buffer tank contains one or more baffles in the capture chamber.

8. The pyrolysis buffer tank device according to claim 7, characterized in that, The second capture chamber is provided with a semi-circular upper baffle and a lower baffle, which are arranged with staggered upper and lower notches.

9. The pyrolysis buffer tank device according to claim 1, characterized in that, The bottom end of the first oil outlet is covered with a first heating pipe.

10. The pyrolysis buffer tank device according to claim 1, characterized in that, The bottom end of the second oil outlet is covered with a second heating pipe, which is connected to the first heating pipe of the first capture chamber.

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