JP2004067886A - Building for petrochemical industry - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To impart activities against hydrogen chloride gas, malodor and dioxins to a building for petrochemical industry. <P>SOLUTION: The building for the petrochemical industry is treated with a photocatalyst by forming a film of the photocatalyst on a ventilating fan 3 of the building housing a petrochemical plant by thermal spraying, treating a drop curtain 12 hung from a ceiling with the photocatalyst, installing a dioxins-decomposing cylinder 30 in the tip of a smoke stack of a hot air blower, laying photocatalytic tiles 11 on a floor face of the building, installing a photocatalytic box 4 in the side wall 2b of the building, or optionally coating a photocatalyst on the inner wall of the building. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a building of an oil conversion plant for collecting oil by converting plastic into oil.
[0002]
2. Prior Art and Problems to be Solved by the Invention
At present, there are about three large oil plants in Japan that convert waste plastic into oil, and small oil plants are currently being developed. In these oil plants, when vinyl chloride is treated, toxic gases such as hydrogen chloride gas and dioxin are generated, so it is necessary to take countermeasures.However, at present these measures are insufficient. Was.
[0003]
[Means for Solving the Problems]
Therefore, the present invention is characterized in that a building accommodating a small-sized oil conversion plant is subjected to photocatalytic treatment.
[0004]
For this photocatalytic treatment, use a ventilation plug with a photocatalyst attached, provide a hanging film with a photocatalyst attached from the ceiling, install a photocatalyst tube at the end of the chimney, lay a photocatalytic tile on the floor, For example, a photocatalyst box is provided.
This deodorizes the air in the building and decomposes harmful gases such as dioxin.
[0005]
Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0006]
In FIG. 1, a small oil conversion plant main body 1 is housed in a building 2, and this oil conversion plant 1 is for collecting plastic such as waste plastic as original oil, and is, for example, 10 m long and 10 m wide. The building 2 having a small size of about 5 m and a height of about 5 m comprises a roof 2a, side walls 2b, and a floor 2c. At the apex of the roof 2a, a plurality of ventilation plugs 3 are provided at predetermined intervals in the vertical direction of the building, and a photocatalyst box 4 is provided on the side wall 2b of the building.
[0007]
The oiling plant main body 1 has a hopper 5 as shown in FIG. 2, and the crusher 7 supplies plastic crushed to a square of 1 to 2 m by a crusher 7 via a conveyor C. , Raw material plastic is charged by the conveyor C2.
In the vicinity of the crusher 6, there is provided a loading place 10 on which the raw material plastic carried from the inlet 8 is placed. When the waste plastic is treated, the loading place 10 may emit a bad smell. To remove the bad smell, at least a photocatalytic tile 11 is laid on the floor near the loading place 10. The photocatalyst tile 11 has a photocatalyst layer formed of fine particles such as titanium oxide and aluminum oxide formed on the upper surface of the tile by thermal spraying, and has a large deodorizing effect. Note that a photocatalytic tile may be laid on the entire floor.
[0008]
As shown in FIG. 1, drooping films 12,... 12 hang down at predetermined intervals from the roof 2a of the building 2, and the dripping film 12 is formed of a non-woven fabric made of plastic fibers. Photocatalyst is attached. The material of the hanging curtain 12 is not limited as long as the photocatalyst can be attached thereto, and may be a metal plate or a wooden plate.
When treating vinyl chloride containing chlorine in an oil conversion plant, there is a risk that hydrogen chloride gas and dioxin will be generated, so measures must be taken. Since hydrogen chloride gas may be generated near the dechlorination device provided near the hopper 5 in FIG. 2 and leaked, exhaust fans 13,... 13 are provided near the floor of the building side wall in the vicinity thereof. Be prepared in case of a leak. Since hydrogen chloride gas is heavier than air, it stays near the floor, and an exhaust fan 13 is provided near the floor to discharge the gas.
[0009]
As shown in FIG. 3, the ventilation plug 3 includes a rotating fan 21 in a cylindrical body 20, and an upper surface of the cylindrical body 20 is covered by a roof plate 22. The rotary fan 21 includes blades 23, 22. The blades 23 are attached to a shaft 24, the shaft 24 is rotated by a motor 25, and upper and lower ends of the shaft 24 are supported by radially arranged support frames 26. Supported. The air in the building flows as indicated by an arrow A in the case of the discharge vent plug, and flows in the opposite direction in the case of the suction vent plug. Note that a plurality of ventilation plugs 3 may be provided, some of which may be configured as exhaust ventilation plugs, and the other may be configured as suction ventilation plugs.
[0010]
A photocatalyst is attached to the entire inner surface of the ventilation plug 3 by thermal spraying. In particular, when the photocatalyst is attached to the blades 23 of the rotary fan 21, the blades 23 rotate to increase the contact area with air, This significantly increases the effect of the photocatalyst. Further, a high-voltage generator (transformer) 27 is connected to the cylinder 20, and the ventilation plug 3 is electrically insulated and installed on the roof, so that the entire ventilation plug 3 has an electric field atmosphere. This excites the photocatalyst, and the effect of the photocatalyst is further remarkably increased.
[0011]
As shown in FIG. 4, a dioxin decomposition tube 30 is provided at the tip of a chimney 28 extending from a hot air generator for supplying a heat source of the oil conversion plant, and this decomposition tube 30 is a main body casing supported on the upper side wall of the building 2. 32 are arranged in a zigzag pattern in the main body casing 31, and the combustion gas entering through the inlet 33 is discharged into the atmosphere from the outlet 34 while hitting the baffle plate 32. A photocatalytic layer is formed on the inner wall and the baffle plate 32 of the main body casing 31 by thermal spraying, and a high voltage generator 35 is connected to the main body casing 31 so that the inside of the dioxin decomposition tube 30 is set to an electric field atmosphere. In addition, the dioxin decomposition ability of the photocatalyst is improved. The disassembly tube 30 is electrically insulated by being connected to the chimney 28 via an insulator 36 and supported by the side wall 26 of the building 2 via an insulator 37.
[0012]
The photocatalyst box 4 attached to an appropriate position on the side wall 2b of the building has a box 40 as shown in FIG. 5, and a suction port 41 is formed on the lower surface of the box 40 and a fan 42 is formed on the upper surface thereof. Is provided. Guide plates 43, 43 are erected inside the box 40, and the back surface of the box 40 faces a ventilation port 44 provided in the side wall 2b of the building. The outer and inner walls of the box 40, and the guide plate 41 and the fan 42 may be provided with a photocatalyst layer formed by thermal spraying or paint, and a high voltage generator may be provided as necessary to form an electric field atmosphere. In the photocatalyst box 4, the air inside the building sucked from the lower surface by the rotation of the fan 42 is deodorized by the photocatalyst, and dioxin is partially decomposed.
[0013]
Note that a photocatalyst layer made of a paint may be formed on the side wall 2 b of the building 2.
[0014]
【The invention's effect】
ADVANTAGE OF THE INVENTION Since this invention is comprised as mentioned above, even if hydrogen chloride gas and dioxin generate | occur | produce erroneously in the building of an oil conversion plant, they can decompose | disassemble, and it has the effect that a bad smell can be quickly deodorized.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a building of the present invention.
FIG. 2 is a schematic plan view of the present invention.
FIG. 3 is a schematic configuration diagram of a ventilation plug according to the present invention.
FIG. 4 is a schematic configuration diagram of a dioxin decomposition apparatus according to the present invention.
FIG. 5 is a perspective view of a photocatalyst box according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Oil conversion plant main body 2 ... Building 3 ... Ventilation plug 4 ... Photocatalyst box 6 ... Crusher 12 ... Hanging curtain 30 ... Dioxin decomposition cylinder

Claims (6)

A building for storing an oil conversion plant, wherein the building has been subjected to photocatalytic treatment as a measure against deodorization and dioxin. The said photocatalyst processing is performed by applying the thermal spray coating of a photocatalyst to the ventilation plug of a building, The building of the oil-forming plant of Claim 1 characterized by the above-mentioned. The said photocatalyst process is performed by applying a photocatalyst to the dripping film | membrane dripped from the ceiling of the building, The building of the oil-forming plant of Claim 1 or 2 characterized by the above-mentioned. The building according to any one of claims 1 to 3, wherein the photocatalyst treatment is performed by attaching a photocatalyst tube to a tip of a chimney for discharging a combustion gas of the hot air generator to the outside. The building of an oil-forming plant according to any one of claims 1 to 4, wherein the photocatalyst treatment is performed by laying a tile having a sprayed photocatalyst attached to a floor surface of the building. 6. The photocatalyst treatment according to claim 1, wherein a photocatalyst box is installed on a wall surface of the building, and the photocatalyst box allows air in the building to pass therethrough to contact the photocatalyst. The building of the oil plant described.

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