WO2009052709A1 - A reaction vessel for cracking waste tyres and plastic - Google Patents

Abstract

The invention relates to a reaction vessel, particularly to a reaction vessel for cracking waste tyres and plastic. It includes a reaction cylinder (1), characterized in that: a funnel-shaped discharge bucket (2) is provided on inner side of the reaction cylinder at the end of the discharge port, a pivot gate (4) is supported on the reaction cylinder (1) at the outlet of the discharge bucket (2), and is connected to a drive mechanism. All of the material inside the pivot gate (4) can be heated effectively during operation such that the material can be reacted completely after being heated, and the funnel-shaped discharge bucket (2) also facilitates the discharge of the material such that a dead zone is not formed therein, thus high productivity and superior quality of the products can be ensured.

Description

 Reactor for cracking used tires and waste plastics

 The present invention relates to a reaction kettle, and more particularly to a reaction vessel for cracking used tires and waste plastics.

 Background technique

 With the development of the automobile industry, the demand for rubber products such as tires is also increasing, and a large number of used tires are also generated. Environmental pollution is inevitable when dealing with used tires and used plastics. According to the statistics of relevant data, about 10 million tons of used tires are produced every year in the world. The accumulation of a large number of used tires not only occupies land, pollutes the environment, endangers the health of residents, but also easily causes fires, resulting in huge waste of resources. A "black pollution" that is increasingly harmful. In order to solve the above problems, the common treatment methods for used tires can be roughly divided into four types, namely, accumulation or landfill, incineration, biodegradation, and recycling. Each of the four options has its own advantages and disadvantages. From the perspective of environmental protection and resource conservation, recycling is the most ideal method, including retreading tires, reclaimed rubber, rubber powder and pyrolysis. The above methods are all carried out by means of heating, which is to catalyze cracking of automobile waste tires at a low temperature to finally obtain a corresponding product. During the heat treatment, the reactor is the place where the reaction takes place. The existing reactor structure has a cylinder supported on the frame. The reactor cylinder is usually made of carbon steel material. The reactor is divided into two layers, the inner layer is mainly used for storing materials, and the reaction is The main place where it happened. The outer layer is mainly used for the circulation of hot air, and the hot air is used as a heat transfer medium to heat the materials in the entire reactor. Hot air continuously transfers temperature into the inner layer through the flow in the outer layer. During the heat transfer process, the hot air of the outer layer is not in contact with the raw materials of the inner layer. In order to make the material in the reactor directly slide out of the silo under the action of gravity, the entire reactor is tilted, and the inlet of the reactor body has a feed port at the upper end and the discharge port at the other end. Switchable doors are provided at the inlet and outlet. When the feeding is closed, the discharge port is closed, and when the reaction is heated, the two doors are closed at the same time, and after the reaction, the discharge port is discharged. There is a dead zone at the bottom of the reactor of this structure, that is, there is no circulation of hot air at the discharge port, and the material here cannot be efficiently heated. During the whole process of the reaction, the temperature of the discharge port is difficult to reach the required temperature, so the reaction material is incompletely reacted, causing heavy oil and carbon black to accumulate at the discharge port and clogging at the discharge port. , so that the discharge can not be carried out normally. Moreover, since the reaction is not complete, the yield of the reaction product is also greatly reduced. Seriously affect production efficiency and product quality.

Summary of the invention The object of the present invention is to provide a reaction kettle for cracking waste tires and waste plastics, which has complete reaction, smooth discharge, no dead zone at the bottom of the kettle, high production efficiency and good quality of the reactor, and overcomes the prior art. Insufficient.

 The reaction vessel for cracking waste tires and waste plastics of the present invention comprises a reactor body 1 characterized in that: a funnel-shaped discharge hopper 2 is arranged inside the discharge port 23 end of the reaction vessel body 1, A rotary door 4 is supported on the reaction vessel body 1 at the mouth of the discharge hopper 2, and the rotary door 4 is connected to the drive mechanism.

 The reaction kettle for cracking waste tires and waste plastics of the present invention, wherein the support structure of the rotary door 4 is: the rotating shaft 3 is connected to the side of the rotary door 4, and both ends of the rotating shaft 3 are fixed to the reaction kettle cylinder The bearing shells 6 and 10 are connected to each other, and one end of the rotating shaft 3 is connected to the outer rotating shaft 7, and the other end of the outer rotating shaft 7 is located outside the reaction vessel body 1 and is connected to the output shaft of the transmission 9, the input of the transmission 9. The shaft is connected to the motor or the manual wheel.

 The reaction vessel for cracking waste tires and waste plastics of the present invention, wherein the rotary door 4 and the support rotary door 4 have two support structures and are symmetrically arranged.

 The reaction vessel for cracking used tires and waste plastics of the present invention, wherein the outer side of the outer rotating shaft 7 is provided with a protective tube 8.

 The reaction vessel for cracking used tires and waste plastics of the present invention, wherein the rotating shaft 3 and the outer rotating shaft 7 are connected by a coupling 13.

 The reaction vessel for cracking used tires and waste plastics of the present invention, wherein the rotary door 4 is provided with a reinforcing plate 5 on the bottom surface thereof.

 The reaction vessel for cracking waste tires and waste plastics of the present invention is provided with a funnel-shaped discharge hopper 2 on the inner side of one end of the discharge port 23 of the reaction reactor body 1, and is located in the discharge hopper 2 on the reactor body 1 The hopper mouth is supported by a rotary door 4, and the rotary door 4 is connected to the driving mechanism. The material located inside the rotary door 4 during operation can be effectively heated to complete the heat reaction, and the funnel-shaped discharge hopper 2 also helps to discharge the material. No blind spots are generated here, and the production efficiency is high and the quality of the products is good.

 DRAWINGS

 Figure 1 is a schematic cross-sectional view taken along line A-A of Figure 2;

 Figure 2 is a schematic view showing the structure of the discharge port 23 of the reaction vessel in the present invention;

 Figure 3 is an enlarged schematic view of a portion C shown in Figure 2;

 Fig. 4 is an enlarged schematic view showing a portion B shown in Fig. 2.

 detailed description

As shown in the figure: 1 is a reaction kettle body, which is made of carbon steel plate. 22 is outside the reaction vessel body 1 On the side of the insulating layer, a hot air flow chamber 21 is formed between the insulating layer 22 and the reactor body 1 to be connected to the heating device. The reactor drum 1 is placed obliquely on the frame. The upper end of the reaction vessel body 1 is a feed port and is provided with a switchable door. The lower end of the reaction vessel body 1 is a discharge port 23 and is provided with a switchable door. The above is a prior art part and will not be described in detail.

 A funnel-shaped discharge hopper 2 is disposed inside one end of the discharge port 23 of the reaction reactor body 1, and the discharge hopper 2 is welded for carbon steel plate, and the edge of the upper port is welded to the inner side wall of the reaction reactor body 1. The lower mouth is rounded.

 A rotary door 4 is supported on the reaction vessel body 1 at a mouth of the discharge hopper 2, that is, a circular lower opening. The support structure of the rotary door 4 is as follows: A rotating shaft 3 is connected to the side of the rotary door 4, and the rotating shaft 3 is connected The side of the swing door 4 can be fixedly connected by welding. One end of the rotating shaft 3 is provided with a bearing 12, and the other end is provided with a bearing 14, and the bearing 12 is mounted on the supporting shell 10 through the bearing housing 11, and the supporting shell 10 is welded and fixed to the inner side of the reaction vessel body 1. The bearing 14 is mounted on the support shell 6 through the bearing housing 15, and the support shell 6 is welded and fixed to the inner side of the reaction vessel body 1, and is disposed coaxially with the support shell 10. One end of the rotating shaft 3 is connected to one end of the outer rotating shaft 7 through a coupling 13. The inner end of the outer shaft 7 is further provided with a bearing 16, and the bearing 16 is mounted on the support shell 6 through the bearing housing 17.

 The outer side of the outer rotating shaft 7 is covered with a protective tube 8, and the inner end of the protective tube 8 is welded and fixed to the bearing housing 17. The other end of the outer rotating shaft 7 is located outside the reaction vessel body 1 and is connected to the output shaft of the transmission 9. The connecting structure is: a bearing 18 is mounted on the outer rotating shaft 7, the bearing 18 is mounted in the bearing housing 25, and the bearing housing 25 is welded. It is fixed to the outer end of the protective tube 8. The bearing housing end cover 19 is bolted to the bearing housing 25. The end of the outer shaft 7 is coupled to the output shaft of the transmission 9 via a coupling 24. The input shaft of the transmission 9 is connected to the motor, and can also be manually driven by a manual wheel or a crank. The protective tube 8 and the reactor body 1 are welded and fixedly connected to the inner and outer layers of the heat insulating layer 22.

 In order to make the rotary door 4 have better strength and rigidity, a reinforcing plate 5 is welded to the bottom surface thereof. The support structure of the swing door 4 and the support swing door 4 described above is two sets, and is symmetrically arranged to form a pair of turnstiles facing each other.

 During operation, the motor can drive the transmission 9 to operate, and then the outer rotating shaft 7 and the rotating shaft 3 drive the rotary door 4 to rotate to achieve the purpose of opening or closing the hopper 2 .

Claims

Rights request A reaction vessel for cracking waste tires and waste plastics, comprising a reactor body (1), characterized in that: at the inner side of the discharge port (23) end of the reaction vessel body (1) is provided The funnel-shaped discharge hopper (2) supports a rotary door (4) at the mouth of the discharge hopper (2) on the reaction vessel body (1), and the rotary door (4) is connected to the drive mechanism.  2. The reaction kettle for cracking waste tires and waste plastics according to claim 1, wherein: the support structure of the rotary door (4) is: connecting the rotating shaft on the side of the rotary door (4) ( 3), shaft (3) The two ends are connected to the bearing shell (6, 10) fixed on the reaction vessel body (1), one end of the rotating shaft (3) is connected to the outer rotating shaft (7), and the outer rotating shaft (7) is another One end is located outside the reaction vessel body (1) and is connected to the output shaft of the transmission (9), and the input shaft of the transmission (9) is connected to the motor or the manual wheel.  3. The reaction kettle for cracking waste tires and waste plastics according to claim 2, wherein: the rotary door (4) and the supporting rotary door (4) have two supporting structures, and are symmetrically arranged. .  The reaction vessel for cracking used tires and waste plastics according to claim 3, characterized in that: the outer side of the outer rotating shaft (7) is provided with a protective tube (8).  The reaction vessel for cracking used tires and waste plastics according to claim 4, characterized in that: the shaft (3) and the outer shaft (7) are connected by a coupling (13).  A reaction vessel for cracking used tires and used plastics according to claim 5, characterized in that: a reinforcing plate (5) is provided on the bottom surface of said rotary door (4).