Cooling and deslagging device for pyrolysis of waste rubber and plastic

Abstract

The utility model provides a cooling and deslagging device for waste rubber and plastic pyrolysis, which belongs to the technical field of waste rubber and plastic pyrolysis and comprises a barrel, a spiral shaft, a spiral blade and a cooling jacket. A first cavity used for cooling and conveying material slag is defined by the cylinder body; the spiral shaft is sleeved with the barrel and is of a hollow structure, a second cavity for storing cooling water is defined by the inner wall of the spiral shaft, a plurality of water outlet holes spirally distributed along the side face of the spiral shaft are formed in the spiral shaft, and the water outlet holes communicate with the first cavity and the second cavity; the spiral blade is spirally sleeved outside the spiral shaft along the side surface of the spiral shaft close to the water outlet hole; and the cooling jacket is sleeved outside the cylinder body. The slag discharging device solves the technical problem that the production efficiency is influenced as the slag after thermal cracking cannot be immediately output from the reaction kettle through the slag discharging device because the temperature of the slag after thermal cracking is very high, and has the characteristics of effectively reducing the temperature of the material and ensuring the continuity and stability of the production process.

Description

Technical Field

[0001] This utility model belongs to the field of waste rubber and plastic pyrolysis technology, and in particular relates to a waste rubber and plastic pyrolysis cooling and slag discharge device. Background Technology

[0002] Waste tire pyrolysis is a commonly used method for treating waste tires. It breaks down waste tires into tire oil, carbon black, steel wire, and combustible gases. This method involves using high temperatures in an oxygen-free or oxygen-deficient atmosphere to decompose the organic matter in the waste tires, releasing volatile products and forming solid coke. During incomplete thermal degradation, gaseous, liquid, and solid products can be formed. This method can completely decompose waste tires into useful products such as pyrolysis oil, pyrolysis carbon black, and pyrolysis non-condensable gases. Using this method to recycle waste tires not only alleviates their environmental impact and reduces pollution but also achieves effective resource recovery and utilization.

[0003] The slag discharge device is a key structure for conveying the slag after pyrolysis in the reactor. However, due to the high temperature of the slag after pyrolysis, the sealing and heat resistance of the slag discharge device are very important. As a result, the slag after pyrolysis cannot be immediately discharged from the reactor through the slag discharge device, which affects the production efficiency. Utility Model Content

[0004] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects and advantages of the present application more readily apparent.

[0005] This utility model proposes a waste rubber and plastic pyrolysis cooling and slag discharge device, which solves the technical problem that the slag after pyrolysis is too hot, which prevents the slag from being immediately discharged from the reactor through the slag discharge device, thus affecting production efficiency. It has the characteristics of effectively reducing the material temperature and ensuring the continuity and stability of the production process.

[0006] This utility model discloses a waste rubber and plastic pyrolysis cooling and slag discharge device, comprising: a cylinder, a spiral shaft, spiral blades, and a cooling jacket; the cylinder forms a first cavity for cooling and conveying the slag; the spiral shaft is sleeved inside the cylinder and has a hollow structure, with its inner wall forming a second cavity for storing cooling water; the spiral shaft has a plurality of water outlet holes spirally distributed along the side of the spiral shaft, and the water outlet holes connect the first cavity and the second cavity; the spiral blades are spirally sleeved on the outside of the spiral shaft along the side of the spiral shaft close to the water outlet holes; and the cooling jacket is sleeved outside the cylinder.

[0007] In some embodiments, the cylinder has a first end and a second end disposed away from the first end, a feed inlet is provided on the top side of the first end, and a slag outlet is provided on the bottom side of the second end; the spiral shaft has a third end and a fourth end, the third end being disposed corresponding to the first end, and the fourth end being disposed corresponding to the second end.

[0008] In some embodiments, the waste rubber and plastic pyrolysis cooling and slag discharge device further includes: a cooling water supply rotary joint and a cooling water return rotary joint; the cooling water supply rotary joint is connected to the second cavity through the fourth end; the cooling water return rotary joint is connected to the second cavity through the third end.

[0009] In some embodiments, the third end is connected to the cooling water return rotary joint via the first shaft head, and the fourth end is connected to the cooling water supply rotary joint via the second shaft head; the first shaft head and the second shaft head are hollow structures.

[0010] In some embodiments, the first shaft head is fixed to the first end by a first shaft seal; the second shaft head is fixed to the second end by a second shaft seal.

[0011] In some embodiments, both the first shaft head and the second shaft head are provided with reverse thread. The first shaft head is connected to the cooling water return rotary joint through the reverse thread, and the second shaft head is connected to the cooling water supply rotary joint through the reverse thread.

[0012] In some embodiments, the waste rubber and plastic pyrolysis cooling and slag discharge device further includes a driving component that drives the spiral shaft to rotate; the driving component further includes: a driven transmission sprocket sleeved outside the second shaft head, a transmission driving sprocket, a transmission reduction motor that drives the transmission driving sprocket to rotate, and a transmission chain connecting the driven transmission sprocket and the transmission driving sprocket.

[0013] In some embodiments, the cooling jacket is connected to a cooling jacket water supply pipe at the first end; and the cooling jacket is connected to a cooling jacket water return pipe at the second end.

[0014] In some embodiments, the inlet of the waste rubber and plastic pyrolysis cooling and slag discharge device is connected to the high-temperature gas-slag separation chamber.

[0015] In some embodiments, the high-temperature gas-slag separation chamber is connected to the inlet of the waste rubber and plastic pyrolysis cooling and slag discharge device via a high-temperature slag discharge valve.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model provides a waste rubber and plastic pyrolysis cooling and slag discharge device. By optimizing the structure of the spiral shaft, the rotating shaft is defined as a hollow structure with water outlet holes. At the same time, the distribution position of the spiral blades and the positional relationship of the water outlet holes are defined. Furthermore, a cooling jacket is installed on the outer sleeve of the cylinder, which can effectively cool the slag after pyrolysis and ensure the cooling effect. Specifically, the design of circulating cooling water through the spiral shaft and the outer jacket can effectively reduce the material temperature, ensuring the continuity and stability of the production process. It not only realizes the material transportation but also effectively reduces the material temperature. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the waste rubber and plastic pyrolysis cooling and slag discharge device provided in this embodiment of the utility model;

[0020] Figure 2 This is another structural schematic diagram of the waste rubber and plastic pyrolysis cooling and slag discharge device provided in this embodiment of the utility model;

[0021] In the above figures: 101, cylinder; 102, spiral shaft; 103, water outlet; 104, spiral blade; 105, cooling jacket; 106, feed inlet; 107, slag outlet; 108, cooling water supply rotary joint; 109, cooling water return rotary joint; 110, first shaft head; 111, second shaft head; 112, first shaft seal; 113, second shaft seal; 114, first bearing housing; 115, second bearing housing; 116, driven transmission sprocket; 117, transmission drive sprocket; 118, transmission geared motor; 119, transmission chain; 120, cooling jacket water supply pipe; 121, cooling jacket water return pipe; 20, high-temperature gas-slag separation chamber; 201, high-temperature slag discharge valve. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments provided by this utility model without inventive effort are within the scope of protection of this utility model.

[0023] This utility model provides a waste rubber and plastic pyrolysis cooling and slag discharge device. Figure 1This is a schematic diagram of the waste rubber and plastic pyrolysis cooling and slag discharge device according to an embodiment of the present invention. (Reference) Figure 1 As shown, the waste rubber and plastic pyrolysis cooling and slag discharge device includes: a cylinder 101, a spiral shaft 102, spiral blades 104, and a cooling jacket 105; the cylinder 101 forms a first cavity for cooling and conveying the slag; the spiral shaft 102 is sleeved inside the cylinder 101 and has a hollow structure, with its inner wall forming a second cavity for storing cooling water; the spiral shaft 102 has several water outlet holes 103 spirally distributed along the side of the spiral shaft 102, and the water outlet holes 103 connect the first cavity and the second cavity; the spiral blades 104 are spirally sleeved on the outside of the spiral shaft 102 close to the water outlet holes 103 along the side of the spiral shaft 102; and the cooling jacket 105 is sleeved on the outside of the cylinder 101. This waste rubber and plastic pyrolysis cooling and slag discharge device optimizes the structure of the spiral shaft 102, defining it as a hollow structure with water outlet holes 103. It also defines the distribution of the spiral blades 104 and their positional relationship with the water outlet holes 103. Furthermore, a cooling jacket 105 is installed around the cylinder 101, enabling effective cooling of the pyrolyzed slag and ensuring cooling efficiency. Specifically, the design of circulating cooling water through the spiral shaft 102 and outer jacket effectively reduces material temperature, ensuring the continuity and stability of the production process. This achieves both material transport and effective temperature reduction.

[0024] In some embodiments, the cylinder 101 has a first end and a second end located away from the first end. A feed inlet 106 is provided on the top side of the first end, and a slag outlet 107 is provided on the bottom side of the second end. The spiral shaft 102 has a third end and a fourth end, with the third end corresponding to the first end and the fourth end corresponding to the second end. This embodiment, by limiting the positions of the feed inlet 106 and the slag outlet 107 on the cylinder 101, ensures a sufficiently long residence time for the high-temperature slag after pyrolysis, from entering the first chamber through the feed inlet 106 to exiting through the slag outlet 107, thereby ensuring a cooling effect.

[0025] In some embodiments, the waste rubber and plastic pyrolysis cooling and slag discharge device further includes: a cooling water supply rotary joint 108 and a cooling water return rotary joint 109; the cooling water supply rotary joint 108 is connected to the second chamber through a fourth end; the cooling water return rotary joint 109 is connected to the second chamber through a third end. Cooling water entering the second chamber from the cooling water supply rotary joint 108 enters the first chamber through the outlet hole 103 to cool the slag in the first chamber. At the same time, the flow direction of the cooling water in the second chamber is opposite to the conveying direction of the slag in the first chamber, further improving the cooling effect.

[0026] In some embodiments, a cooling jacket water supply pipe 120 is connected to the first end of the cooling jacket 105; and a cooling jacket water return pipe 121 is connected to the second end of the cooling jacket 105.

[0027] In some embodiments, the third end is connected to the cooling water return rotary joint 109 via the first shaft head 110, and the fourth end is connected to the cooling water supply rotary joint 108 via the second shaft head 111; the first shaft head 110 and the second shaft head 111 are hollow structures. Further, the first shaft head 110 is fixed to the first end via the first shaft seal 112; the second shaft head 111 is fixed to the second end via the second shaft seal 113. Both the first shaft head 110 and the second shaft head 111 are provided with reverse thread; the first shaft head 110 is connected to the cooling water return rotary joint 109 via the reverse thread, and the second shaft head 111 is connected to the cooling water supply rotary joint 108 via the reverse thread.

[0028] In some embodiments, the waste rubber and plastic pyrolysis cooling and slag discharge device further includes a drive component that drives the spiral shaft 102 to rotate; the drive component further includes: a driven transmission sprocket 116 sleeved on the second shaft head 111, a drive transmission sprocket 117, a transmission reduction motor 118 that drives the drive transmission sprocket 117 to rotate, and a transmission chain 119 connecting the driven transmission sprocket 116 and the drive transmission sprocket 117. Specifically, the driven transmission sprocket 116 is assembled at the end of the second shaft head 111, and through the cooperation of the transmission chain 119 and the drive transmission sprocket 117, the multi-cooling rapid cooling and slag discharge spiral conveyor is driven to rotate clockwise under the action of the transmission reduction motor.

[0029] In some embodiments, the inlet 106 of the waste rubber and plastic pyrolysis cooling and slag discharge device is connected to the high-temperature gas-slag separation chamber 20. The high-temperature gas-slag separation chamber 20 is connected to the inlet 106 of the waste rubber and plastic pyrolysis cooling and slag discharge device via a high-temperature slag discharge valve 201.

[0030] After the waste rubber and plastics are pyrolyzed at high temperature in the pyrolysis reactor, the high-temperature pyrolysis oil vapor enters the top of the high-temperature gas-slag separation chamber 20 and is discharged from the high-temperature oil vapor outlet to be sent to the next process for condensation and recovery. A pyrolysis reactor installation position is located on the left side of the high-temperature gas-slag separation chamber 20. Another by-product, carbon slag, after pyrolysis is discharged into the high-temperature gas-slag separation chamber 20 and connected to the high-temperature slag discharge valve 201 through the lower outlet. The slag outlet 107 of the high-temperature gas-slag separation chamber 20 is located at the bottom of the chamber. The discharged high-temperature carbon slag, at approximately 400°C, directly enters the high-temperature slag discharge valve 201 and then flows into the waste rubber and plastics pyrolysis cooling and slag discharge device for cooling and conveying.

[0031] In one embodiment, a feed inlet 106 is vertically arranged on the upper part of the left spiral cylinder 101, and a pre-reserved connecting pipe is provided at the lower part of the feed inlet 106 for easy cleaning when the feed inlet 106 is blocked. The upper flange of the feed inlet 106 is connected to the lower flange of the high-temperature slag discharge valve 201. A remote temperature sensor is provided on the left side of the connecting pipe of the feed inlet 106 to detect the temperature of the carbon slag discharged from the slag outlet 107 of the high-temperature gas-slag separation chamber 20. The left cylinder 101 is provided with a flange connected to the left bearing seat. The multi-cooling rapid cooling slag discharge spiral mill (waste rubber and plastic pyrolysis cooling and slag discharge device) has right-handed double-layer cooling spiral blades 104, which rotate clockwise when viewed from the left side of the multi-cooling rapid cooling slag discharge spiral mill.

[0032] The first shaft head 110 extends into the end of the first bearing housing 114. A drilled hole is drilled inside the first shaft head 110. A reverse thread is provided on the left side of the first shaft head 110, which connects to the left-side circulating cooling water return rotary joint 109. A first shaft seal 112 is provided on the first bearing housing 114 to effectively prevent dust leakage from the hollow spiral shaft 102 during operation. A control valve is also provided on the left-side circulating cooling water return rotary joint 109 to control the temperature of the circulating cooling water. The second shaft head 111 extends into the end of the second bearing housing 115. A drilled hole is drilled inside the second shaft head 111. A positive thread is provided on the left side of the second shaft head 111, which connects to the right-side circulating cooling water return rotary joint 109. A control valve is also provided on the right-side circulating cooling water return rotary joint 109 to control the temperature of the circulating cooling water.

[0033] A cooling jacket 105 is installed on the outer layer of the cylinder 101. A local temperature gauge is installed on the left side of the cooling jacket 105 to detect the temperature of the circulating cooling water. A circulating cooling water return pipe is vertically installed on the upper right side of the cooling jacket 105, and a flow control valve is installed at the outlet of the circulating cooling water return pipe. A circulating cooling water supply pipe is vertically installed on the upper left side of the cooling jacket 105, and a control valve is installed on the pipe to connect to an external water supply pipeline.

[0034] A hollow spiral shaft 102 is installed inside the cylinder 101. Along the spiral direction of the double-layer closed cooling spiral blades 104, Ф12mm water outlet holes 103 are provided on the outer wall of the hollow spiral shaft 102 at 15mm intervals, allowing circulating cooling water to flow into the water tank of the double-layer closed cooling spiral blades 104. A slag discharge observation pipe is vertically installed on the upper right side of the spiral cylinder 101, corresponding to the lower slag discharge port 107. A remote temperature sensor is installed on the right side of the slag discharge port 107 pipe to detect the temperature of the discharged slag. The discharged slag is sent to the next process for further processing. The cylinder 101 is equipped with a flange that connects to the second bearing seat 115.

[0035] The working process of the above-mentioned waste rubber and plastic pyrolysis cooling and slag discharge device is as follows:

[0036] The high-temperature slag after pyrolysis enters the first chamber through the feed inlet 106. The spiral shaft 102 drives the spiral blades 104 to rotate, thereby conveying the high-temperature slag from the feed inlet 106 to the slag outlet 107. During this process, the high-temperature slag in the first chamber is fully cooled by the cooling water discharged from the water outlet 103 and by the cooling jacket 105, thereby achieving the required output temperature.

[0037] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A waste rubber and plastic pyrolysis cooling and slag discharge device, characterized in that, include: A cylindrical body, the cylindrical body forming a first cavity for cooling and conveying slag; A spiral shaft is fitted inside the cylinder and has a hollow structure. The inner wall of the spiral shaft forms a second cavity for storing cooling water. The spiral shaft has several water outlet holes that are spirally distributed along the side of the spiral shaft and connect the first cavity and the second cavity. The spiral shaft has a third end and a fourth end. A spiral blade, wherein the spiral blade is spirally sleeved on the outside of the spiral shaft along the side of the spiral shaft and close to the water outlet hole; A cooling jacket is fitted over the outside of the cylinder; A cooling water supply rotary joint, wherein the cooling water supply rotary joint is connected to the second cavity via the fourth end; A cooling water return rotary joint, wherein the cooling water return rotary joint is connected to the second cavity through the third end; The third end is connected to the cooling water return rotary joint via the first shaft head, and the fourth end is connected to the cooling water supply rotary joint via the second shaft head; the first shaft head and the second shaft head are hollow structures.

2. The waste rubber and plastic pyrolysis cooling and slag discharge device according to claim 1, characterized in that, The cylinder has a first end and a second end located away from the first end. A feed inlet is provided on the top side of the first end, and a slag outlet is provided on the bottom side of the second end. A third end is provided corresponding to the first end, and a fourth end is provided corresponding to the second end.

3. The waste rubber and plastic pyrolysis cooling and slag discharge device according to claim 2, characterized in that, The first shaft head is fixed to the first end by a first shaft seal; the second shaft head is fixed to the second end by a second shaft seal.

4. The waste rubber and plastic pyrolysis cooling and slag discharge device according to claim 1, characterized in that, Both the first shaft head and the second shaft head are provided with reverse thread. The first shaft head is connected to the cooling water return rotary joint through the reverse thread, and the second shaft head is connected to the cooling water supply rotary joint through the reverse thread.

5. The waste rubber and plastic pyrolysis cooling and slag discharge device according to claim 1, characterized in that, The waste rubber and plastic pyrolysis cooling and slag discharge device also includes a driving component that drives the spiral shaft to rotate; the driving component further includes: a driven transmission sprocket sleeved outside the second shaft head, a transmission driving sprocket, a transmission reduction motor that drives the transmission driving sprocket to rotate, and a transmission chain connecting the driven transmission sprocket and the transmission driving sprocket.

6. The waste rubber and plastic pyrolysis cooling and slag discharge device according to claim 2, characterized in that, The cooling jacket is connected to a cooling jacket water supply pipe at the first end; the cooling jacket is connected to a cooling jacket water return pipe at the second end.

7. The waste rubber and plastic pyrolysis cooling and slag discharge device according to claim 1, characterized in that, The feed inlet of the waste rubber and plastic pyrolysis cooling and slag discharge device is connected to the high-temperature gas-slag separation chamber.

8. The waste rubber and plastic pyrolysis cooling and slag discharge device according to claim 7, characterized in that, The high-temperature gas-slag separation chamber is connected to the inlet of the waste rubber and plastic pyrolysis cooling and slag discharge device through a high-temperature slag discharge valve.

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