A waste plastic recycling pyrolysis carbonization reaction furnace based on a waste incinerator

Abstract

A kind of pyrolysis carbonization reaction furnace based on waste plastics recovery of waste incinerator, the present application relates to a pyrolysis carbonization reaction furnace, the present application is to solve the problem that garbage carbonization furnace in prior art is more complex when using, needs to be heated to complete garbage carbonization, various gas-liquid solid substances generated during carbonization cannot be completely utilized, the energy consumption of carbonization furnace is higher in the process of carbonization, leading to cost increase, carbonization efficiency and quality low, the big end of conical cylinder is fixedly installed with air inlet end cover, the small end of circular cylinder is fixedly installed with transmission shaft connecting end cover, transmission shaft is arranged in heating bucket and is rotatably connected with transmission shaft connecting end cover by bearing, transmission shaft is connected with external driving motor, discharge box is equipped on heating bucket, receiving funnel is installed on the side wall on the top of heating bucket, exhaust pipe is arranged close to the small end side of heating bucket, exhaust pipe is installed on the side wall on the top of heating bucket and is communicated with heating bucket.The present application belongs to the technical field of carbonization furnace.

Description

A waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator Technical Field

[0001] This invention relates to a pyrolysis carbonization reactor, specifically to a pyrolysis carbonization reactor for recycling waste plastics from a waste incinerator, belonging to the field of carbonization furnace technology. Background Technology

[0002] Waste refers to discarded items that have lost their value and cannot be utilized, and is an important link in the material cycle. It consists of unwanted or useless solid and liquid substances. In densely populated large cities, waste disposal is a major headache. Plastic waste is a significant component of solid waste. Common practices include collecting waste and sending it to landfills or incinerating it. Landfill disposal not only pollutes groundwater and produces foul odors, but also dwindles the available landfill space in many cities. Incineration inevitably produces toxic gases that harm organisms. While landfilling and incineration are common waste disposal methods, both are highly polluting to the environment. However, some waste carbonization furnaces are complex to operate, often requiring continuous heating to complete carbonization, and they cannot fully utilize the various gaseous, liquid, and solid substances produced during carbonization. Furthermore, the furnace cannot maintain a consistently low-oxygen environment during carbonization, resulting in high energy consumption, increased costs, and low carbonization efficiency and quality. Summary of the Invention

[0003] This invention addresses the problems of existing waste carbonization furnaces, which are complex to use, require continuous heating to complete waste carbonization, produce various gaseous, liquid, and solid substances that cannot be fully utilized, consume high energy during carbonization, leading to increased costs, and have low carbonization efficiency and quality. Therefore, this invention provides a waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0005] A waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator includes a heating tank, an air inlet end cover, a drive shaft connecting end cover, a drive shaft, an exhaust pipe, and multiple receiving funnels. The heating tank is a conical cylinder, with the air inlet end cover fixedly installed at the large end and the drive shaft connecting end cover fixedly installed at the small end. The drive shaft is located inside the heating tank and is rotatably connected to the drive shaft connecting end cover via bearings. One end of the drive shaft is fixedly connected to the output end of an external drive motor shaft. A discharge box is provided at the bottom of the heating tank near the small end. Multiple receiving funnels are installed in a straight line on the side wall of the top of the heating tank. The exhaust pipe is located near the small end of the heating tank and is installed on the side wall of the top of the heating tank and communicates with the heating tank.

[0006] Furthermore, it also includes five branch exhaust pipes; the heating barrel is machined with five exhaust holes, each of which is connected to an exhaust pipe through a branch exhaust pipe.

[0007] Furthermore, the drive shaft is a helical drive shaft, which forms a helical channel with the inner wall of the heating barrel when it rotates.

[0008] Furthermore, catalyst particles are provided on the inner wall of the heating tank.

[0009] Furthermore, the air intake end cap is a circular cap with air intake holes machined on it.

[0010] Furthermore, the conical cylinder is fixedly connected to the air inlet end cap by bolts.

[0011] Furthermore, each receiving funnel is fixedly connected to the heating barrel 1 by bolts.

[0012] Furthermore, the air intake port on the air intake end cover is configured to connect with external nitrogen gas.

[0013] The beneficial effects of this invention are:

[0014] 1. Existing carbonization furnace equipment is independently powered and requires additional electrical or fuel devices. In contrast, this carbonization furnace is designed based on a waste incinerator and can rely on the heat generated by waste incineration for heating, thus reducing costs and saving energy.

[0015] 2. In the carbonization reactor of this invention, plastic particles move slowly forward in a spiral pipe and react fully with the catalyst on the pipe wall to obtain carbon particles, thereby improving carbonization efficiency and carbonization quality.

[0016] 3. The present invention is designed with an air inlet and an exhaust outlet to ensure that the carbon particles in the heating barrel are reduced from being lost, while the airflow pushes the carbon particles to avoid pipe blockage.

[0017] 4. This invention is equipped with multiple feed inlets and receiving funnels, making full use of the different temperature ranges at different locations in the carbonization furnace, so as to heat different types of plastics in the appropriate temperature range. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a schematic diagram of drive shaft 4. Detailed Implementation

[0020] Specific Implementation Method 1: This implementation method is described with reference to Figures 1 and 2. The pyrolysis and carbonization reactor for recycling waste plastics in a waste incinerator described in this implementation method includes a heating tank 1, an air inlet end cover 2, a drive shaft connecting end cover 3, a drive shaft 4, an exhaust pipe 6, and multiple receiving funnels 7. The heating tank 1 is a conical cylinder. The air inlet end cover 2 is fixedly installed at the large end of the conical cylinder, and the drive shaft connecting end cover 3 is fixedly installed at the small end of the conical cylinder. The drive shaft 4 is set inside the heating tank 1 and is rotatably connected to the drive shaft connecting end cover 3 through a bearing. One end of the drive shaft 4 is fixedly connected to the output end of an external drive motor shaft. A discharge box 8 is provided at the bottom of the heating tank 1 near the small end. Multiple receiving funnels 7 are installed in a straight line on the side wall of the top of the heating tank 1. The exhaust pipe 6 is set near the small end of the heating tank 1 and is installed on the side wall of the top of the heating tank 1 and communicates with the heating tank 1.

[0021] Specific Implementation Method Two: Referring to Figure 1, this implementation method describes a waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator. It further includes five branch exhaust pipes 5; the heating tank 1 has five exhaust holes, each connected to an exhaust pipe 6 via a branch exhaust pipe 5. Other components and connections are the same as in Specific Implementation Method One.

[0022] Specific Implementation Method 3: This implementation method is illustrated in Figures 1 and 2. The pyrolysis and carbonization reactor for recycling waste plastics in a waste incinerator described in this implementation method has a helical drive shaft 4. When the drive shaft 4 rotates, it forms a helical channel with the inner wall of the heating tank 1. Other components and connections are the same as in Specific Implementation Method 2.

[0023] Specific Implementation Method 4: This implementation method is illustrated in conjunction with Figure 1. The pyrolysis and carbonization reactor for recycling waste plastics in a waste incinerator described in this implementation method has catalyst particles on the inner wall of the heating tank 1.

[0024] The catalyst particles are iron-cobalt bimetallic catalysts supported on Al2O3. Other components and connection methods are the same as in Specific Embodiment 1.

[0025] Specific Implementation Method 5: This implementation method is illustrated in Figure 1. The waste plastic recycling pyrolysis carbonization reactor described in this implementation method has a circular inlet cover 2 with inlet holes machined on it. Other components and connection methods are the same as in Specific Implementation Method 1.

[0026] Specific Implementation Method Six: This implementation method is illustrated in Figure 1. The waste plastic recycling pyrolysis carbonization reactor described in this implementation method has its large end of the conical cylinder fixedly connected to the air inlet cap 2 by bolts. Other components and connection methods are the same as in Specific Implementation Method One.

[0027] Specific Implementation Method Seven: This implementation method is illustrated in Figure 1. In this method, a waste plastic recycling pyrolysis and carbonization reactor based on a waste incinerator is described, where each receiving funnel 7 is fixedly connected to the heating tank 1 by bolts. Other components and connection methods are the same as in Specific Implementation Method One.

[0028] Specific Implementation Method 8: This implementation method is illustrated in conjunction with Figure 1. The waste plastic recycling pyrolysis carbonization reactor described in this implementation method has an air inlet on the air inlet end cover 2 that is connected to external nitrogen gas.

[0029] To prevent carbon particles from reacting with oxygen during carbonization and reduce carbon loss, nitrogen or other gases are introduced through the air inlet, and exhaust gases are discharged through the exhaust outlet. Other components and connections are the same as in specific implementation method five.

[0030] Working principle

[0031] During operation, the drive shaft 4 rotates while pushing the waste plastic particles in the spiral channel forward. This allows the waste plastic particles to be slowly and fully heated, and they move downwards under the influence of gravity. The air inlet and outlet holes allow airflow to pass through, reducing the probability of blockage by plastic powder. Catalyst particles fixed to the inner wall of the cylinder are set inside, allowing the plastic particles to be fully carbonized without being contaminated by the catalyst. This eliminates the need for catalyst separation after the reaction and reduces the complexity of the reaction process.

Claims

1. A pyrolysis and carbonization reactor for recycling waste plastics from a waste incinerator, characterized in that: It includes a heating barrel (1), an air inlet end cover (2), a drive shaft connection end cover (3), a drive shaft (4), an exhaust pipe (6), and multiple receiving funnels (7); the heating barrel (1) is a conical cylinder, with the air inlet end cover (2) fixedly installed at the large end of the conical cylinder, and the drive shaft connection end cover (3) fixedly installed at the small end of the cylindrical cylinder. The drive shaft (4) is set inside the heating barrel (1) and rotatably connected to the drive shaft connection end cover (3) through a bearing. One end of the drive shaft (4) is fixedly connected to the output end of the external drive motor shaft. A discharge box (8) is provided at the bottom of the heating barrel (1) near the small end. Multiple receiving funnels (7) are installed in a straight line on the side wall of the top of the heating barrel (1). The exhaust pipe (6) is set near the small end of the heating barrel (1) and is installed on the side wall of the top of the heating barrel (1) and communicates with the heating barrel (1).

2. The waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator according to claim 1, characterized in that: It also includes five branch exhaust pipes (5); the heating barrel (1) is machined with five exhaust holes, each of which is connected to the exhaust pipe (6) through a branch exhaust pipe (5).

3. The waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator according to claim 1, characterized in that: The drive shaft (4) is a spiral drive shaft. When the drive shaft (4) rotates, it forms a spiral channel with the inner wall of the heating barrel (1).

4. The waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator according to claim 1, characterized in that: The inner wall of the heating tank (1) is provided with catalyst particles.

5. The waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator according to claim 1, characterized in that: The air intake end cap (2) is a circular cap with an air intake hole machined on it.

6. The waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator according to claim 1, characterized in that: The large end of the conical cylinder is fixedly connected to the air inlet end cap (2) by bolts.

7. The waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator according to claim 1, characterized in that: Each receiving funnel (7) is fixedly connected to the heating barrel (1) by bolts.

8. The waste plastic recycling pyrolysis carbonization reactor based on a waste incinerator according to claim 5, characterized in that: The air inlet on the air inlet end cap (2) is connected to the external nitrogen gas.

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