JPH06240263A - Method for liquefying waste and apparatus for gasifying waste - Google Patents

Abstract

PURPOSE:To predict breakage of the wall of a container wherein a waste is thermally liquefied in the absence of air and to thereby prevent the explosion due to contact of a combustible gas with air by using. As the container, one having a specified structure. CONSTITUTION:A waste (e.g. a waste tire) is liquefied by heating the waste in the absence of air in a waste container which comprises an outer wall 5 which faces a combustion side 6, an inner wall 7 which is installed inside the outer wall 5 in such a manner as to be out of contact with the outer wall 5 and which contains the waste, and pref. a pressure-detecting device 14 which detects the pressure of a fluid existing in the space between the outer wall 5 and the inner wall 7 and thus detects the breakage of the inner wall 7 or the outer wall 5 from the change in pressure of the fluid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste oil treatment method and a waste gasification apparatus, and more particularly to a waste oil treatment method and a waste gasification apparatus for safety. .

[0002]

2. Description of the Related Art Conventionally, there has been known a waste treatment apparatus for extracting oil suitable for a fuel by subjecting a waste such as rubber and a thermoplastic polymer compound to the air and performing a dry distillation treatment. As the waste treatment device, for example, the waste treatment device shown in FIG. 3 can be considered.

In this waste processing apparatus 1 ', wastes such as rubber and thermoplastic polymer compounds are put into a waste storage chamber 3'provided in a combustion chamber 2', and the waste storage chamber 3'is provided from the outside. '
To heat.

By heating, the waste material is thermally decomposed to generate a gas, which gas is liquefied in the liquefying section 5'through the contact reactor 4'and stored in the oil tank 6 '.

[0005]

However, when the waste storage chamber 3'is repeatedly used for many years, cracks are generated in the waste storage chamber 3 due to deterioration of the material, and the combustible gas in the waste storage chamber 3'is generated. There is a problem in that the air comes into contact with the air and causes an explosion.

An object of the present invention is to provide a waste oilification treatment method and a waste gasification apparatus, which have been made to solve the above-mentioned conventional problems.

[0007]

In order to achieve the above object, in the method for oil treatment of waste according to the present invention, the waste stored in the waste storage chamber is heated while being shielded from the air. In a waste oilification treatment method for extracting oil, the waste storage chamber is configured with an outer wall facing the combustion side and an inner wall that is provided inside the outer wall so as to be shielded from the outer wall and that stores the waste. However, the breakage of the inner wall or the outer wall is detected by the change in the pressure of the fluid existing between the inner wall and the outer wall.

Further, in the waste gasifier of the present invention, the combustion chamber, the outer wall provided in the combustion chamber and facing the combustion side, and provided inside the outer wall so as to be shielded from the outer wall and to be covered. An inner wall for accommodating waste and a pressure detecting means for detecting the pressure of the fluid existing between the inner wall and the outer wall are provided.

[0009]

The pressure detecting means of the waste gasifier constructed as described above detects the value of the pressure increase due to combustion in the combustion chamber, but if the inner wall or the outer wall is damaged, the There is no increase in the pressure of the fluid in between.

[0010]

EXAMPLE A method for oil treatment of waste and a gasifier for waste according to one embodiment of the present invention will be described.

In FIG. 1 and FIG. 2, A is a waste oil treatment device, and the waste oil treatment device A is a waste object (not shown) stored in a waste storage chamber 1 (for example, Waste gasifier that intercepts old tires, rubber, waste materials such as thermoplastic polymers, etc. from the air (for example, dry distillation at 380 to 600 ℃) and heats them to generate combustible gas. B, a contact reactor 2 for converting the combustible gas from the waste gasifier B from heavy oil to light oil, and a liquefying section 3 for liquefying the combustible gas from the contact reactor 2. An oil tank 4 for storing the oil liquefied in the liquefying section 3 is roughly configured.

As shown in FIG. 2 (the wall covering the combustion chamber 6 is omitted in FIG. 2), the waste gasifier B has an outer wall 5 on the combustion side in the combustion chamber 6. It is provided on the side facing. Although not shown on the outside of the outer wall 5,
Fins made of stainless steel are provided to improve the thermal conductivity.

Further, an inner wall which is provided inside the outer wall 5 so as to be shielded from the outer wall 5 and which stores waste (for example, waste such as old tires, rubber, thermoplastic polymer compounds, etc., not shown). 7 is provided.

The outer wall 5 and the inner wall 7 are welded to and integrated with the flange portion 8 to form a hermetically sealed structure. Further, since the outer wall 5 is located on the combustion side as compared with the inner wall 7, the outer wall 5 is more subjected to thermal expansion than the inner wall 7, and therefore a thermal expansion absorption ring 9 for absorbing the thermal expansion is provided above the outer wall 5. It is provided.

Further, between the outer wall 5 and the inner wall 7, in order to improve heat conduction, fine particles of a heat conductive substance (for example, copper,
Fine particles of metals such as iron) and heat-resistant adhesives (eg Al0 ₃ · S
A heat conducting member 10 in which i0 ₂ ) is mixed is provided, and a fluid (for example, air) is enclosed in an upper portion (reference numeral 11) of the heat conducting member 10.

The heat conductive member 10 contains fine particles of a heat conductive substance because the heat conductivity is poor only with a heat resistant adhesive (for example, Al0 ₃ .Si0 ₂ ). When the heat conducting member 10 is adhered to both the outer wall 5 and the inner wall 7, the outer wall 5
Due to the difference in thermal expansion between the inner wall 7 and the inner wall 7, cracks are generated in the heat conducting member 10 to lower the heat conductivity of the heat conducting member 10. for that reason,
The heat conducting member 10 is joined to either the outer wall 5 or the inner wall 7. On the non-bonded side (outer wall 5 or inner wall 7 that is not bonded), an adhesion preventive agent such as liquid Teflon is applied to prevent the heat conductive member 10 from adhering.

Reference numeral 12 denotes an opening / closing lid, which can be opened by opening the opening / closing lid 12.
Waste (not shown) (for example, waste such as old tires, rubber, thermoplastic polymer compounds) is put into the inner wall 7 and fixed by tightening with bolts 13 or the like.

Reference numeral 14 is a pressure detecting means,
(For example, with a pressure gauge, the pressure value can be easily read by looking at the scale of the pressure gauge.) The pressure of the fluid existing between the inner wall 7 and the outer wall 5 can be detected.

The pressure detecting means 14 is a pipe 15 which communicates with the upper fluid (reference numeral 11) of the heat conducting member 10 between the outer wall 5 and the inner wall 7.
And an air chamber (air chamber) 16 provided in the middle of the pipe 15 to mitigate the pressure rise, and a pressure gauge 17 provided at the tip side.

Therefore, the pressure detecting means 14 of the waste gasifier B detects the value of the pressure increase due to the combustion in the combustion chamber 6, but if the inner wall 7 or the outer wall 5 is damaged, the inner wall 7 and the outer wall 5 will be damaged. The pressure of the fluid present between and will not show an increased value.

As a result, the breakage of the inner wall 7 or the outer wall 5 can be detected by the pressure change of the fluid existing between the inner wall 7 and the outer wall 5.

Further, as the combustion chamber 6 burns, the inner wall 7 and the outer wall 5
Is thermally expanded, but since the heat conducting member 10 is joined to either the outer wall 5 or the inner wall 7, the side that is not joined is slipped and not restrained while maintaining heat conductivity. The generation of cracks due to the difference in thermal expansion between the outer wall 5 and the inner wall 7 is prevented.

[0023]

According to the waste oil treatment method of the present invention, the waste oil treatment method is to extract the oil by heating the waste material stored in the waste storage chamber by shutting it off from the air. A fluid existing between the inner wall and the outer wall, wherein the waste storage chamber is configured as an outer wall facing the combustion side and an inner wall that is provided inside the outer wall and shields the outer wall and stores the waste. Since the breakage of the inner wall or the outer wall is detected by the change in the pressure, it is possible to prevent the explosion caused by the combustible gas in the inner wall coming into contact with air due to the breakage of the inner wall or the outer wall.

In the waste gasifier according to the present invention, the waste stored in the waste storage chamber is heated by shutting it off from the air to generate combustible gas from the waste. In the gasifier, a combustion chamber, an outer wall provided in the combustion chamber and facing the combustion side, an inner wall that is provided inside the outer wall so as to be shielded from the outer wall and stores waste, and the inner wall and the Since the pressure detecting means for detecting the pressure of the fluid existing between the outer wall and the outer wall is provided, it is possible to prevent the combustible gas inside the inner wall from exploding due to the contact of the combustible gas with the air due to the damage of the inner wall or the outer wall. .

[Brief description of drawings]

FIG. 1 is a schematic explanatory view for explaining a waste oil treatment method and a waste gasifier according to one embodiment of the present invention.

FIG. 2 is a schematic explanatory view for explaining the waste gasifier shown in FIG. 1 in detail.

FIG. 3 is a schematic explanatory diagram of a waste oilification device for explaining the prior art of the present invention.

[Explanation of symbols]

 A waste oil treatment device B waste gasifier 5 outer wall 6 combustion chamber 7 inner wall 14 pressure detection means

Claims (2)

[Claims] 1. A waste oilification treatment method for extracting oil by heating a waste material stored in a waste storage chamber by blocking it from the air, and an outer wall facing the combustion side in the waste storage chamber. The inner wall is provided inside the outer wall so as to be shielded from the outer wall, and is configured as an inner wall for accommodating the waste, and the breakage of the inner wall or the outer wall is detected by a pressure change of a fluid existing between the inner wall and the outer wall. A method for oil treatment of waste, comprising: 2. A waste gasification device for producing a combustible gas from a waste by heating the waste to be stored in the waste storage chamber by cutting off the air from the combustion chamber and the combustion chamber. An outer wall that faces the combustion side, an inner wall that is provided inside the outer wall so as to be shielded from the outer wall and that stores waste, and a pressure of the fluid existing between the inner wall and the outer wall is detected. A gasifier for waste, comprising a pressure detecting means.