JPS623196B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides used vehicle tires, waste rubber,
This article concerns the structure of a pyrolysis dry distillation machine used to precipitate recycled oil from organic industrial waste such as waste oil from internal combustion engines and waste plastics, and in particular, the structure of the dry distillation machine, which has three internal sections, and its purpose. The aim is to improve thermal efficiency as much as possible to reduce the required amount of heat, and also to facilitate the removal of carbonized substances precipitated during decomposition and improve the work efficiency. It is in.

Regarding this type of pyrolysis dry distillation machine, which has been used in the past, the only consideration is to improve its thermal efficiency, and as a result of using a large number of pyrolysis cylinders, each pyrolysis cylinder has a small diameter, and therefore there is a large amount of space inside each pyrolysis cylinder. It becomes difficult to remove the carbonized substances precipitated during decomposition, which not only deteriorates work efficiency during continuous operation, but also causes poor thermal conductivity due to the adhesion of the precipitated carbonized substances, resulting in a decrease in overall thermal efficiency. However, it is difficult to say that the method is good, and furthermore, it has disadvantages such as the fact that it is still insufficient in terms of uniformity of temperature distribution in the dry distillation machine itself.

The present invention aims to solve the above-mentioned difficulties as much as possible, and the specific configuration of one embodiment thereof will be described in detail below with reference to the drawings.

The drawings show one embodiment of the present invention.
The figure is a vertical cross-sectional view showing the internal structure taken along line b-b in Figure 2, and Figure 2 is a cross-sectional view taken along line a-a in Figure 1, excluding the upper partition plate and stirring cylinder. In each figure, the same parts are given the same symbols.

Now, in FIG. 1, X denotes an upper pyrolysis chamber divided by a partition plate, which will be described later, above the outer cylinder _Cp , which has a circular cross section and constitutes the dry distillation machine of the present invention;
is covered with _the upper part _of the upper pyrolysis chamber The lid to be fitted, P ₁ , is a partition plate having the same diameter and the same number of circular holes as the inner diameter of a plurality of pyrolysis cylinders, which will be described later. A plate-shaped rotor blade (see FIG. ₂ ) extends near the center of each pyrolysis cylinder _C1 ...... _C4 , which will be described later, and is driven through the rotor blade.

Y is, for example, 4 fixed at the top of each of the circular holes bored in the partition plate _P1 of the upper pyrolysis chamber X.
This is an intermediate pyrolysis chamber consisting of pyrolysis cylinders C ₁ , C ₂ , C ₃ , and C ₄ , and the bottom of each pyrolysis cylinder has the same diameter as the inner diameter of each pyrolysis cylinder, similar to the partition plate P ₁ . The partition plate _P2 has circular holes drilled therein, and each circular hole is welded to maintain the mechanical stability of the lower part. In addition, on the outer circumferential side of each pyrolysis cylinder, as shown in Fig. 2, 24 fins f are spaced from each center at an angle of, for example, 15 degrees in a plane, and are arranged vertically in the middle pyrolysis chamber Y. They are fixed vertically so that they are spaced above each other about four-fifths of the length of the pyrolysis cylinder, and for convenience, one of the cylinders is shown in Figure 1.
As only _C1 is shown, the upper and lower stirring cylinders C' and C'' in contact with the inner wall of the cylinder are pyrolyzed by a shaft _S2 which is moved up and down with an appropriate stroke by a hydraulic cylinder (not shown) from above the lid L. It is driven to slide fully up and down inside the cylinder.W is a weight fixed to the lower part of the shaft _S2 , which measures mechanical stability during the vertical movement of the shaft and also performs a stirring action as described later.

Z is a lower pyrolysis chamber which extends in a cylindrical shape below the partition plate P ₂ of the intermediate pyrolysis chamber Y, and has a mortar-shaped portion below it, and at the bottom thereof is a pyrolysis chamber driven by a shaft S ₃ . A stirring blade D consisting of, for example, three pieces, which has a mortar-shaped cross section and whose tips are spread radially, is rotatably disposed, and a spiral stirring rod S is located in the center of the stirring blade.
_p is fixed.

In addition, g is an injection port that injects an inert gas such as nitrogen into each pyrolysis chamber from the mortar-shaped bottom of the lower pyrolysis chamber Z, and D ₁ is a door provided at the bottom of the lower pyrolysis chamber Z, which It is used to take out carbonized substances generated during decomposition, and is opened and closed freely by operating a hydraulic device (not shown). These ejection ports g and door D form a lower thermal decomposition chamber that protrudes from the bottom surface of the outer cylinder C _p .

In addition, E ₁ is the inlet port for incinerator exhaust heat, etc., and O _p
indicates the exhaust port, b indicates the burner, and
As seen in FIG. 1, the burner b is moved from below the lower pyrolysis chamber Z to above the middle pyrolysis chamber Y, and further, as shown in FIG. 2, at the center of the outer cylinder C _p. They are attached to the outer cylinder at an angle of approximately 45 degrees, and although not shown, four of them are attached at the arrowed positions in the figure, and each pyrolysis cylinder is provided with sufficient supplementary heating.

In the pyrolysis dry distillation machine according to the present invention, although not shown, exhaust heat from the incinerator is fed into the inlet port _E1 , and the exhaust port _Op is connected to the preheater. The gas generated by thermal decomposition is taken out from the outlet _Og , and recycled oil is precipitated through a condenser and a distiller (not shown), which performs dry distillation during this process.

The present invention has the above-mentioned configuration.Next, we will describe the operation and effect along with an example of its usage mode.First, the exhaust heat of about 400°C obtained from the incinerator is guided to the intake port _E1 , and , four burners b disposed below the outer cylinder C _p are ignited to supplementally heat each of the pyrolysis cylinders C ₁ , C ₂ ......C ₄ . Then, the lower pyrolysis chamber Z and the middle pyrolysis chamber Y are heated by the exhaust heat and burner b, which rises in the direction of the arrow through the gap in the outer cylinder _Cp , and is transferred to the upper part through the partition plate _P1 . The decomposition _chamber , it is in a state where it can be dry distilled.

Next, in this state, an electric motor (not shown) moves the rotor A through the shaft _S1 , and the stirring rod _Sp and the three stirring blades D at its base through the shaft _S3 . While driving and rotating, each pyrolysis cylinder C ₁ to _{C 4} is connected via shaft S ₂ by a hydraulic cylinder (not shown).
The stirring cylinders C′ and C″ loaded in the interior are slid fully up and down each cylinder with a predetermined stroke, and in this state, organic industrial waste is poured from the input port E _p in the lid L. For example, crushed waste rubber mixed with waste oil is thrown in and dropped.

However, the waste rubber introduced into the upper pyrolysis chamber
During the fall, it is distributed and dropped into C ₁ to C ₄ ,
As the stirring cylinders C' and C'' move up and down, they are subjected to stirring action and gradually fall into the lower pyrolysis chamber Z and are accumulated at the bottom. The bottom of the waste rubber is stirred by three fan-shaped stirring blades A, and the bottom part thereof is stirred upward by a stirring rod S _p , and the waste rubber is stirred by the stirring rod S in the lower decomposition chamber Z.
The mixture is stirred around _p as if by convection, and in addition, a weight W fixed to the lower end of each shaft _S2 , which controls the vertical movement of the stirring cylinders C' and C'', assists in the convection. Since the waste rubber is pressed from the top to the bottom, it is further thoroughly stirred, and the waste rubber thrown into the lower pyrolysis chamber Z is thoroughly heated and performs the ideal pyrolysis action, producing recycled oil. The gas to be deposited is generated to the upper outlet O _g .

As described above, according to the dry distillation machine of the _present invention, in the upper pyrolysis chamber Then, in the intermediate pyrolysis chamber Y connected below, a plurality of pyrolysis cylinders C ₁ ...... C ₄ each equipped with fins f to improve heat absorption are heated from the outer peripheral side,
In addition, the stirring cylinders C′ and C″ move up and down in each cylinder, and while the falling is appropriately restricted, the heat is received very well because it is dispersed appropriately by the stirring action. , Furthermore, in the mortar-shaped lower pyrolysis chamber Z continuous below, stirring blades D,
a stirring bar S _p , a weight W that moves up and down by the shaft S ₂ ;
As mentioned above, it is thoroughly agitated and receives sufficient heat even in the boiler, so it has a good thermal decomposition effect and at the same time it is possible to make the temperature distribution inside the dry distillation machine even. Thermal efficiency is improved, reducing heating costs, and during pyrolysis,
Regarding the removal of carbonized substances that hinder work efficiency the most,
In each decomposition chamber X, Y, _Z , each pyrolysis cylinder _C1 ...
......The adhesion to the inner wall of _C4 is constantly peeled off by the vertical movement of each stirring cylinder C', C'', and also by the rotation of the stirring blade D at the mortar-shaped bottom. There are various excellent effects that can fully achieve the intended purpose stated at the beginning of this section, such as eliminating the need for troublesome peeling work and improving work efficiency.

Finally, a small amount of the waste rubber that has undergone the dry distillation process as described above, approximately 20% by volume, remains in the lower pyrolysis chamber Z as a carbonized substance, but the waste rubber remains in the lower thermal decomposition chamber Z as a carbonized substance. One of the rods is removable, so all you have to do is operate the hydraulic system, open door _D1 , and take it out of the cage.Also, as mentioned above, auxiliary heating is performed by burner B, and the waste rubber is constantly disposed of. Since it is stirred, there is no extreme drop in temperature distribution, and therefore the waste heat at the exhaust port _O is
The temperature only needs to be lowered to about 370 degrees Celsius, and it is effectively used in the next stage preheater (not shown).

On the other hand, since the carbonized material is taken out in advance by injecting inert gas into each thermal decomposition chamber from the jet nozzle g, safety is ensured during the taking out work.

In addition, the pyrolysis cylinder installed in the intermediate pyrolysis chamber Y
C ₁ ......The number of C _o is 2 depending on the capacity of the dry distillation machine.
It may be appropriate to increase or decrease the number of books, three, or six, and generally good results can be obtained with four or so.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a longitudinal sectional view taken along line b-b in FIG. 2 showing the internal structure, and FIG. FIG. 3 is a cross-sectional view excluding the plate and stirring cylinder. A...rotor blade, b...burner, C _p ...outer cylinder, C ₁ ...C _o ...pyrolysis cylinder, C', C''...stirring blade, D ₁ ... door, E _p ...Inlet port, E ₁ ...Intake port, f...Fin, g...Spout port, L...Lid body,
O _p ...exhaust port, O _g ...outlet, P ₁ , P ₂ ... partition plate, S _p ...stirring bar, S ₁ , S ₂ , S ₃ ... shaft, W ...
Weight, X... Upper pyrolysis chamber, Y... Middle pyrolysis chamber, Z... Lower pyrolysis chamber.

Claims (1)

[Claims] 1. It consists of a bottomed outer cylinder C _p having a cylindrical shape, and has a lid L of the outer cylinder having an input port E _p and an output port O _g on its upper surface, and a plurality of circular shapes provided inside the outer cylinder. an upper pyrolysis chamber X formed by a perforated partition plate P ₁ and provided therein with rotor blades A which are externally driven and rotate on said partition plate; The lower part of the partition plate _P2 , which has circular holes of the same diameter, is fixed to each of the circular holes, and a plurality of fins F are attached to the outer circumferential side of the partition plate _P2 . An intermediate pyrolysis chamber Y is provided with stirring cylinders C' and C'' which are moved up and down by the shafts, and a weight W at the lower end of the shaft, and a pyrolysis chamber Y that surrounds the outer periphery of each circular hole bored in the partition plate _P2 . The bottom part is formed in a mortar shape, and a plurality of stirring blades D which are externally driven and rotated inside the mortar shape and a spiral stirring rod _Sp at the center thereof are placed.
A lower pyrolysis chamber Z is provided with a door _D1 and a jet nozzle g at the outer bottom thereof, and the lower pyrolysis chamber Z is formed such that the door and the jet nozzle protrude from the bottom surface of the outer cylinder,
On the circumferential side of the outer cylinder, an exhaust port O _p is arranged near the bottom of the partition plate P ₁ , and an intake port E ₁ and a plurality of burners b are arranged near the bottom of the outer cylinder. A pyrolytic dry distillation machine characterized by: