JPS621431A - Oil recovery device for high-molecular solid waste carbonized gas - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to an apparatus for recovering oil from carbonized gas containing dust generated in a pyrolysis furnace for solid polymer waste, and in particular, it relates to an apparatus for recovering oil from carbonized gas containing dust generated in a pyrolysis furnace for solid polymer waste, and in particular, for recovery of oil from waste tires and waste plastics. A carbonization process for polymer solid waste gas that continuously recovers oil from a carbonization gas fluid consisting of combustible gas, oil, moisture, and dust generated in a polymer solid waste pyrolysis furnace (or carbonization furnace) such as Regarding oil recovery equipment.

With the significant increase in the amount of waste plastics and tires generated due to industrial development, the issue of recycling and proper disposal of these wastes has recently become an increasingly important social issue from the perspectives of resource conservation, energy conservation, and environmental protection. It becomes.

Solid waste 1 For example, carbonization gas generated in the carbonization process of a pyrolysis furnace for waste tires contains a relatively large amount of dust mainly consisting of carbon, and this dust is mixed with oil produced by carbonization. It is a highly viscous substance, and it adheres to relatively low-temperature gas passages and complicated curved parts of the equipment, or the bottom 1 of the equipment, significantly reducing the efficiency of separating and recovering oil from carbonized gas. Various problems have arisen, such as the accumulated dust and dirt clogging the passages within the device, and in some cases requiring the device to be shut down and disassembled for cleaning.

Conventional technology As a conventional device for cooling carbonized gas from waste tires to separate and recover oil, etc., there is, for example, a heat exchanger disclosed in Japanese Patent Application Laid-open No. 179799/1984 (corresponding to the oil recovery device of the present invention). There is. The present invention relates to a heat exchanger for recovering combustible materials by cooling carbonized gas generated during carbonization of combustible materials, and includes an inner wall surface cleaner device that slides up and down along the inner wall surface of the Al heat exchanger main body. (A stirrer was installed above the outlet of the BL heat exchanger to homogenize the oil condensed from the carbonized gas and the accumulated dust.) This invention is characterized by the provision of a scraping device for collecting heavy oil in the vicinity of the discharge port.
Compared to conventional devices, this device is considered to be superior in terms of removing dust deposited inside the heat exchanger.

However, as will be explained in detail later, this invention is considered to be insufficient in terms of separation and recovery efficiency of oil and dust from carbonized gas, ease of removing adhering dust, simplicity of structure, etc. .

Problems to be solved by the invention Conventional oil recovery device 5
In the device disclosed in No. 9799, the temperature of the baffle plate and cooling pipe group is not properly controlled;
The separation and recovery efficiency of oil and dust from carbonized gas is low, and the dust firmly adheres to the surfaces of baffles and cooling pipes, making it difficult to remove. However, since the heat exchanger body and the bottom are of an integrated structure, it is difficult to remove sludge consisting of dust that has adhered to and accumulated on the inner surface of the bottom, and in some cases, the equipment must be stopped and disassembled for cleaning. There are drawbacks such as having to do so. Additionally, since the cooling pipe cleaner device is a rigid body.

The sliding removal of highly viscous and fixed dust adhering to the surface of the cooling pipe is incomplete, resulting in low oil recovery efficiency.
In some cases, there are drawbacks such as the need to stop the operation of the device and disassemble it for cleaning.

Means for Solving the Problems The present invention has been made in view of the above, and in order to ensure and easily remove the dust that has adhered and accumulated inside the device, and to ensure long-term continuous operation, the bottom part of the main body is The main purpose of the present invention is to provide an oil recovery device for carbonized polymer solid waste gas, which is isolated from the gas and has a liquid-sealed structure.

Another object of the present invention is to improve the separation and recovery efficiency of dust from the carbonized gas, to control the condensation of oil on the surfaces of the baffle plates and cooling pipes, and to facilitate the removal of adhering dust. Another object of the present invention is to provide an oil recovery device for carbonized polymer solid waste gas, which is equipped with a temperature control means for maintaining the surface of a cooling pipe at a predetermined temperature.

Furthermore, another object of the present invention is to provide a flexible cooling device that slides up and down around the cooling pipe surface in order to ensure and facilitate the removal of dust attached to the surface of the cooling pipe group arranged in the vertical direction. The present invention relates to an oil recovery device for carbonized polymer solid waste gas equipped with a pipe rinner device.

In one embodiment, the invention comprises a single body housing and a bottom housing that is separated from the body housing and is of a leak-tight construction.

In yet another embodiment, the invention provides a body housing, a bottom housing isolated from the body housing, and a baffle with temperature control means for maintaining a surface at a desired temperature; a group of cooling pipes for oil condensation, a flexible cooling pipe cleaner that slides vertically on the surface of each cooling pipe to remove attached dust, and a flexible cooling pipe cleaner provided at the bottom of the cooling pipe group. Consists of carbonization gas short circuit prevention means.

Function: In the oil recovery apparatus for carbonized polymer solid waste gas according to the present invention, the bottom housing is isolated from the main housing and has a liquid-sealed structure, making it extremely easy to remove dust and sludge that have adhered and accumulated inside the apparatus. Naυ,
Problems such as clogging of carbonization gas passages with dust are eliminated.

Since the oil recovery apparatus of the present invention is equipped with a temperature control means for controlling the surfaces of the baffle plate and the cooling pipe to a desired temperature, the efficiency of separating and recovering oil and dust from carbonized gas is significantly increased.

To reduce the adhesion of dust to the surfaces of baffle plates and cooling pipes, and to facilitate the removal of adhering dust.

According to the present invention, since the flexible cooling pipe cleaner device is provided which slides up and down around the surface of the cooling pipes, it is possible to reliably and easily remove dust attached to the surfaces of the cooling pipes, and the pipes can be mutually removed. The clogging of the carbonization gas passage between the two by dust is eliminated.

Embodiment FIG. 1 is a schematic side view of an oil recovery apparatus for carbonized polymer waste gas according to the present invention.

Reference numeral 1 is a main body housing of the oil recovery device, and 2 is a bottom housing arranged to be separated from the main body housing 1. When starting the device, the space between the bottom housing 2 and the main housing is filled with water for liquid sealing, waste oil, etc.
Over time, this condensed oil from the carbonized gas 1
Replaced with 2.

In one embodiment, when the inside of the apparatus is maintained at a pressure slightly higher than atmospheric pressure, the curved surface inside the apparatus is lower than the curved surface outside, as shown in FIG.

5 to a polymer waste pyrolysis furnace (not shown).

In general, 4 is an inlet for carbonized gas connected via a cyclone or the like, and 4 is an outlet for carbonized gas from which oil and dust have been removed.

Reference numeral 5 denotes a baffle plate that causes the carbonized gas to collide with each other to cause the dust to fall downward. The surface temperature of the baffle plate 5 is maintained at a desired temperature by flowing a fluid at a predetermined temperature, such as water, into the baffle plate 5. For example, the surface of the baffle plate 5 has a temperature of 100 to 500° C. of the carbonized gas flowing from the gas tank.
When the flow rate is 1 to 50 m/sec, the temperature is maintained at an appropriate temperature by flowing a liquid adjusted to 5 to 50°C or 50 to 80°C depending on the type of oil to be recovered.

Generally, a higher temperature range is selected for light oils and a lower temperature range for heavy oils.

7 is a cooling pipe group in which double-walled refrigerated pipes are divided into several groups (creeping groups in Fig. 1).

Each pipe is suspended in the air, and an appropriate space is provided between it and the bottom housing 2. A plate-shaped carbonized gas flow short-circuit prevention plate (or pipe liquid sealing plate) 6 is attached to the lower left side of each pipe group. The temperature of the liquid flowing through the cooling pipe group 7 is controlled to an appropriate temperature, for example, 0 to 100°C, depending on the properties of the oil contained in the carbonized gas. Contrary to the baffle plate 5, it is desirable to select a relatively low temperature for light oil and a relatively high temperature for heavy oil. Thus, by appropriately selecting the surface temperature of the cooling pipe group.

The oil condensation rate can be optimally adjusted, preventing blockages between pipes and increasing dust collection efficiency.

8 is a scraping device for scraping up dust, sludge, etc. accumulated at the bottom of the liquid layer to the discharge port 11. Reference numeral 9 denotes a scraping device that scrapes out dust, sludge, etc. adhering to the bottom inner wall portion while visually observing and freely operating the device. 10
is the internal liquid overflow pipe (or oil outlet). Of course, a plurality of overflow pipes (or oil outlets) with different heights can be provided. 1
1 is a sludge discharge port.

FIG. 2 is a partially enlarged view of the cooling pipe cleaner device attached to the cooling pipe group, FIG. 2A is a plan view, and FIG. 2B is a side view. This cooling pipe cleaner device 15 consists of a wire 13 arranged vertically slidably around the surface of each cooling pipe and means 111 for vertically moving the wire.

Effects of the Invention The oil recovery apparatus for carbonized polymer solid waste gas according to the present invention has a main body housing and a bottom housing separated from each other.
Equipped with an easily operable dust removal means.

A means for maintaining the baffle plate and the surface of the cooling pipe group at a predetermined temperature is provided, and a cooling pipe cleaner that slides vertically around the surface of each cooling pipe is installed, making it possible to separate and recover oil and dust from carbonized gas. This method has extremely excellent effects such as significantly improved efficiency, improved dust removal workability, prevention of clogging of the carbonization gas passage, and enabling long-term continuous operation of the device.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of an oil recovery apparatus for carbonized polymer solid waste gas according to the present invention. FIG. 2 is a partially enlarged view of the cooling pipe cleaner attached to the cooling pipe group,
FIG. 2A is a plan view thereof, and FIG. 2B is a side view thereof.

Claims (1)

[Claims] 1. Consists of a main body, a baffle plate, a group of cooling pipes, and a dust cleaner device, which separates and recovers oil from carbonized gas containing dust generated in a pyrolysis furnace for solid polymer waste. An oil recovery device for carbonized polymer solid waste gas, characterized in that the bottom housing is isolated from the main housing and has a liquid-sealed structure. 2. The oil recovery device according to claim 1, wherein the baffle plate includes temperature control means for maintaining the surface of the baffle plate at a predetermined temperature. 3. The surface temperature of the baffle plate is controlled by the temperature control means to
The oil recovery device according to claim 2, wherein the oil recovery device is maintained at 50°C or 30 to 80°C. 4. The oil recovery device according to claim 1, wherein each of the cooling pipe groups is provided with humidity control means for maintaining the surface temperature of the cooling pipe at a predetermined temperature. 5. The oil recovery device according to claim 1, wherein the cooling pipe group is provided with a gas short circuit prevention means for preventing a short circuit of the carbonized gas at the bottom of the cooling pipe group. 6. Claim 1, wherein each of the cooling pipe groups is provided with a flexible cooling pipe cleaner means that slides up and down around the surface of each pipe to remove attached sticky dust. The oil recovery device described in section.