JPH0645714U - Styrofoam recycling equipment - Google Patents

Abstract

(57) [Summary] [Objective] Establish a low-melting, easy-to-operate, high-safety hot-melt recycle system for waste expanded styrene that is suitable for small-volume processing. [Structure] In a device used for recycling by reducing the volume of waste expanded styrene by heat melting, a variable temperature hot air generator and a far-infrared radiation part made of a ceramic material are stretched on the inner wall surface and a heat insulation part is formed on the outer surface. And a volume reduction furnace
It is characterized by comprising an operation unit for automatic operation and a deodorizing device for removing odorous components generated in the volume reduction furnace.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention reduces the volume of so-called waste expanded styrene such as used fish boxes, trays, and packaging materials for home electric appliances by heat melting to reduce the volume of waste expanded styrene that can be reused as a raw material for recycled expanded styrene products. It relates to a recycling device.

[0002]

[Prior art and its problems]

 The conventional means for heat melting and reducing the volume of waste expanded styrene are roughly classified as follows. (A) Hot air method by burning kerosene (B) Direct heating method by electric heater (C) Electric heater and far infrared ray combined method (D) Superheated steam blowing method However, the above-mentioned foamed styrene heat melting means is practically (a) Since it is difficult to control the temperature of hot air, it tends to be heated at a temperature higher than necessary, resulting in discoloration or discoloration of the hot melt product, which is often not suitable as a raw material for reuse. In addition, there is a risk of fire when paper dust or the like is mixed. (B) It consumes a large amount of power and requires a rise time of 1 hour or more before reaching steady operation. (C) Installation of a boiler is essential. Problems such as these are pointed out, and in addition, all of them are means that can be applied only to a place where a large amount of expanded styrene is treated such as in a fish market. In recent years, there is an increasing need for recycling equipment for small amounts of waste expanded styrene generated in supermarket stores, etc., but in each of the above means, "equipment cost", "operating cost", "driving operation", It cannot be applied in terms of "odor measures" and "safety measures", and there has been no means for treating such a small amount of waste expanded styrene. The object of the present invention is to solve the above-mentioned problems of the prior art and to provide a “melting recycle device for waste expanded styrene, which is suitable for small-scale processing, inexpensive, easy to operate and highly safe. Was placed in establishing.

[0003]

[Means for Solving the Problems]

 The present invention has been completed as a result of intensive studies conducted from various viewpoints in order to achieve the above-mentioned object, and a variable temperature hot-air generator and a far-infrared radiation part made of a ceramic material are installed on the inner wall surface. However, the waste expanded styrene is characterized by being equipped with a reduction furnace with an external heat insulation section, an operation section for automatic operation, and a deodorizing device for removing odorous components generated in the volume reduction furnace. It is configured as a recycling device.

[0004]

[Work]

 Next, the operation of this device will be described. First, prior to use, the automatic temperature controller of the variable temperature hot air generator, the operating time timer, and the abnormal temperature high alarm in the volume reduction tank are set. The device operates as follows when the operation push button switch is pressed after the waste foamed styrene such as a fish box is stored in the volume reduction tank. (1) The special light for operation display installed on the upper part of the variable temperature hot air generator lights up, the variable temperature hot air generator starts operation, and the hot air of the optimum temperature for the heat melting of the waste expanded styrene set above is generated. Supplied into the volume reduction tank. The waste foamed styrene is heated from the surface by the hot air, and at the same time, is also effectively melted by being heated from the inside by far infrared rays emitted from the ceramic material stretched on the inner wall surface of the volume reduction furnace. The molten product flows down to a pan provided at the bottom of the volume reduction furnace. (2) Simultaneously with the above (1), the exhaust blower starts operation, introduces the air containing the odorous components in the volume reduction furnace to the deodorization tower for treatment, and then discharges it out of the system. The operation of this deodorization tower consists of three steps, a primary deodorization step, a secondary deodorization step, and a dilution step. The air containing a small amount of odorous components (styrene, formaldehyde, ammonia, etc.) introduced into the deodorization tower first comes into gas-liquid contact with the processing liquid at the bottom of the tower, and due to condensation by cooling and absorption of the processing liquid, Most of the odorous components are deodorized by the treatment liquid. (Primary deodorization step) Next, the air containing a small amount of odorous components blown up in the suction direction of the blower passes through the porous ceramic layer laid in the center of the tower, but remains at that time. The odorous components are completely deodorized by being adsorbed by the ceramic layer (secondary deodorizing process). Also, the blower capacity is set to be larger than the hot air generation amount of the variable hot air generator, and the lower part of the deodorization tower By arranging the air supply hole in the, the odorous component at the discharge port is diluted with the ambient air and discharged to the outside of the system. (3) When the time set by the operating time setting timer has elapsed, the variable temperature hot air generator and the exhaust blower stop operating and the operating special light goes off. (4) If the temperature inside the volumetric furnace rises abnormally during operation, the variable temperature hot-air generator and the exhaust blower will stop urgently, and the operation display special light will turn off. This operation is repeated several times, and when the hot-melted product reaches near the upper surface of the pan installed at the bottom of the volume reduction furnace, the pan is taken out and naturally cooled, so that a solid type suitable for the raw material for reuse can be obtained. A waste foam styrene melt product is obtained. The heat insulation part stretched over the outer surface of the volume reduction furnace is a constituent element that is not found in conventional methods. By preventing the heat from radiating from the outer surface of the volume reduction furnace, (a) variable temperature Power consumption of the hot air generator is reduced. (B) The temperature in the furnace is kept uniform and the quality of the molten product is kept constant. (C) The temperature of the outer surface of the volume reducing furnace is lowered to prevent workers from being burned. And so on.

[0005]

【Example】

Hereinafter, the present invention will be described in detail based on an example of the embodiment of the present invention shown in the drawings. FIG. 1 is a schematic perspective view showing an embodiment of the present invention, and FIG. 2 is a schematic sectional view. Reference numeral 1 denotes a variable temperature hot air generator having blower 1-3 and heater 1-4 as main components, which is disposed in a storage box 1-1 and has a hot air outlet 1-2. As the variable temperature hot air generator, commercially available Multi-Dryer Co., Ltd., Taketsuna Seisakusho, HAS-1 type, power supply: AC100V 50 / 60Hz, rated power consumption: 1480 / 1485W, automatic temperature control range: 30 to 3500 ° C, Maximum air volume: 0.9 / 1. 0 m ³ / min) and the hot air temperature was set to 170 ° C. Since the multi-drier can control the temperature of hot air with an accuracy of ± 2 ° C, it is possible to obtain a heat-melted product of a certain quality suitable for a recycled material without heating at a temperature higher than necessary. It was In addition, a normal 100 V power supply is sufficient and no rise time is required, which is an advantage over the conventional system. Reference numeral 2 denotes a volume reducing furnace, which has a far-infrared radiation part 2-1 made of ceramic on the inner wall surface and a heat insulation part 2-2 on the outer surface. -3, a hot air supply nozzle 2-4 and an exhaust nozzle 2-5 on the side, a tray entrance / exit door 2-6 on the lower front, and waste expanded styrene on the upper lid 2-7. Each has a handle 2-8 to be used when it is put in. The hot air outlet 1-2 of the variable temperature hot air generator and the hot air supply nozzle 2-4 of the volume reducing furnace are connected by a short pipe. The far-infrared radiation section and the heat insulation section were installed in the volume reduction furnace, which enabled a significant reduction in power consumption. Reference numeral 3 denotes an operation unit, which is composed of an operation push button switch 3-1, an operation time setting timer 3-2, and a volume abnormality tank temperature abnormality high alarm meter 3-3. Numeral 3-4 is a stop push button switch, but since this device automatically stops after a certain period of time as described above, it is not necessary to use it in normal operation. 3-5 is a special light for operation display. Reference numeral 3-6 is a temperature sensor of the temperature indicating alarm meter. The optimum timer setting was 10 minutes when simultaneously processing seven 450 mm x 300 mm x 1500 mm fish boxes or 150 normal trays. Also, the temperature abnormality in the volume reduction tank was set to 200 ° C at all times. This is to prevent the heat-melted product from being discolored / altered and becoming unsuitable as a raw material for reuse. Reference numeral 4 denotes a deodorizing tower, in which a treatment liquid 4-1 for absorbing and condensing odorous components is stored at the bottom, and a porous ceramic packed layer 4-2 for adsorbing odorous components is arranged at the center. A hot air supply nozzle 4-3 and an atmospheric air inlet nozzle 4-4 are provided on the wall surface between the upper surface of the stored liquid and the lower part of the packed bed, and an exhaust nozzle 4-5 is provided at the top of the tower. The hot air supply nozzle 4-3 and the exhaust nozzle 2-5 of the volume reducing furnace are connected by a short pipe. An exhaust blower 5 and an exhaust pipe 5-1 are arranged above the exhaust nozzle 4-5 of the deodorizing tower. The maximum air volume of the exhaust blower was set to 10 m ³ / min, that is, 10 times the maximum air volume of the variable temperature hot air generator.

[0006]

[Effect]

 As described above, according to the present invention, a small amount of waste foamed styrene can be heat-melted at a low price, with easy operation and safely, and the heat-melted product has an extremely high quality. It can be used as a raw material for recycling for recycling. Therefore, it is effective enough as a recycling device for small amount of waste expanded styrene generated in supermarket stores, etc., where the need has been increasing in recent years but only appropriate processing means existed. .

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a foamed styrene recycling device.

[Explanation of symbols]

1 ... Variable temperature hot air generator 2 ... Smelting furnace 3 ... Operation part 4 ... Deodorizing tower 5 ... Exhaust blower

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B29K 105: 26

Claims (1)

[Scope of utility model registration request] 1. A device used for recycling by reducing the volume of styrene foam by heat melting, wherein a variable temperature hot air generator and a far infrared radiation part made of ceramic material are stretched on the inner wall surface and insulated on the outer surface. A waste foamed styrene recycling device comprising a volume reduction furnace having a stretched section, an operation section for automatic operation, and a deodorizing device for removing odorous components generated in the volume reduction furnace.