JP2000061344A - How to treat waste gas cans - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a method for treating a waste gas can that can reliably treat whatever waste gas can is charged. SOLUTION: A processing chamber (4) formed in a main body of the processing apparatus.
A pair of rotating rollers (1) and (2) are arranged rotatably around a horizontal axis, and a waste gas can is charged between the rotating rollers (1) and (2) to remove residual liquefied petroleum gas from the waste gas can. In the waste gas can treatment method described above, a waste gas can input chamber (5) is formed above the treatment chamber (4), and a waste gas can discharge chamber (6) is formed below the treatment chamber (4). I do. This input room (5)
And a partitioning device that shields the inside and outside of each entrance and exit in the discharge chamber (6)
(12), (13), (14), and (15) are arranged respectively, and the processing chamber (4), the charging chamber (5), and the discharging chamber (6) are configured to be replaceable with an inert gas. At the start of the treatment, the inside of the treatment chamber (4) is replaced with an inert gas to maintain the inside of the treatment chamber (4) at a low oxygen concentration outside the explosion range of the liquefied petroleum gas. After the charging chamber (5) and the discharging chamber (6) are replaced with an inert gas, they are communicated with the processing chamber (4).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for operating a device for crushing a discarded gas can, and more particularly to a method for treating a gas can that is discarded while leaving a flammable gas.

[0002]

2. Description of the Related Art A gas can that stores liquefied petroleum gas used as a fuel such as a portable gas stove or a gas lantern, or an aerosol can or a spray can that stores liquefied petroleum gas as a propellant can be used to store gas inside. If it is discarded as it is, it may explode at the stage of waste treatment such as incineration or compression. For this reason, they are instructed to use up and discard the gas inside, but in reality, there are quite a few that are discarded while the gas remains inside.

Therefore, conventionally, at a waste treatment center, the collected gas cans are put into a processing device, and a rotating roller having spike pins standing on the peripheral surface arranged inside the processing device is used to remove the gas cans. The wall is perforated to release the gas inside, or the disc-shaped rotary blade cuts like a shredder to release the gas inside, and then the residue is compressed.

[0004]

However, in this case, air flows in together with the gas can when the waste gas can is put into the processing apparatus. Moreover, propane and butane are often used as liquefied petroleum gas filled in fuel gas cans, aerosol cans, and spray cans, but this type of gas is known to burn in a wide mixing ratio range with air. There is. For this reason, in the conventional processing apparatus, there is a possibility that the released gas may be ignited by frictional heat when the wall surface of the gas can is perforated by the spike pin or sparks caused by the impact between the metals.

The present invention has been made by paying attention to such a point, and is a method for treating a waste gas can which is more safe and can surely treat whatever waste gas can is thrown in. The purpose is to provide.

[0006]

In order to achieve the above object, the present invention provides a waste gas can charging chamber at the upper part of the processing chamber,
Forming a discharge chamber for waste gas cans at the bottom of the processing chamber,
Partitioning devices for shielding the inside and outside of the inlet and outlet chambers are installed respectively, and the processing chamber, the input chamber, and the discharge chamber can be replaced with inert gas. Is used to maintain a low oxygen concentration outside the explosion range of liquefied petroleum gas, and the charging chamber and the discharging chamber are replaced with an inert gas and then communicated with the processing chamber.

According to the present invention, the processing chamber is maintained in an inert gas atmosphere, and the charging chamber disposed above the processing chamber of the waste gas can and the discharge chamber disposed below the processing chamber are inert. It is configured so that it can be replaced with gas, and the charging chamber and the discharging chamber are replaced with an inert gas before the processing chamber communicates with the charging chamber or the discharging chamber. Even if external air flows into the charging chamber and the discharging chamber when the used can is discharged, the external air does not flow into the processing chamber. As a result, the inside of the processing chamber will always be maintained at a low oxygen concentration outside the explosive range of liquefied petroleum gas, so even if flammable gas leaks from the waste gas can during processing, the leaked flammable gas will ignite. There is nothing to do.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a schematic configuration diagram of a waste gas can processing device, FIG. 2 is a perspective view of a crushing roller portion taken out, and FIG. 3 is a waste gas can processing device. FIG. 4 is a timing chart showing the operation timing of each part of the transfer device in FIG. In this waste gas can processing device, a pair of rotary rollers (1) and (2) and a rotary transfer device (3) are vertically arranged in a processing chamber (4), and the rotary rollers (1) and (2) A waste gas can input chamber (5) is formed on the upper side, and a waste gas can discharge chamber (6) is formed on the lower side of the transfer device (3).

As shown in FIG. 2, the rotating rollers (1) and (2) are fixed by fixing a plurality of sprocket gears (8) to the rotating roller shafts (7) arranged in parallel at a constant pitch. The sprocket gears (8) arranged on one of the rotating roller shafts (7) are arranged in the gap between the adjacent sprocket gears (8) in the other rotating roller shaft (7).
The sprocket gear (8) arranged at the position is inserted.

The transfer device (3) is formed of a casing (9) and a rotating frame (10) which rotates inside the casing (9). As shown in FIG. 3, the rotary frame body (10) is partitioned in the radial direction to form a plurality of housing portions. Also, this rotating frame
The rotating shaft (11) of (10) is arranged so as to be slightly inclined from the vertical direction, and is configured to rotate in an inclined plane. Further, the inclination is arranged such that the lower corresponding portion of the rotating rollers (1) and (2) is low and the inclination is high on the discharge chamber (6) side. The bottom wall portion of the casing (9) of the transfer device (3) is open at the portion where the discharge chamber (6) is arranged, and the ceiling wall portion is where the rotary rollers (1) and (2) are arranged. It is open.

Partitioning tools (12) and (13) are opened and closed at the inlet part where the charging chamber (5) of the waste gas can communicates with the outside and the outlet part where the charging chamber (5) and the processing chamber (4) communicate with each other. It is arranged as possible. Both of the partitioning tools (12) and (13) are configured such that, in the closed position, the charging chamber (5) and the outside or the processing chamber (4) do not communicate with each other so as to be in an airtight closed state.

A partition is provided at each of an inlet portion where the discharge chamber (6) of the waste gas can communicates with the processing chamber (4) through the transfer device (3) and an outlet portion where the discharge chamber (6) communicates with the outside. (14) and (15) are arranged so that they can be opened and closed. Both of the partitioning tools (14) and (15) are configured so that, in the closed posture, the discharge chamber (6) and the outside or the processing chamber (4) do not communicate with each other so as to be in an airtight closed state.

Further, a processing chamber (4), a waste gas can charging chamber
(5) In the discharge chamber (6) of the waste gas can, an inert gas inlet pipe
(16) and the gas outlet pipe (17) are connected to each other,
The interiors of the chambers (4), (5) and (6) can be replaced with an inert gas.

A liquid drain passage (18) is led out from the inclined bottom side of the transfer device (3) in the processing chamber (4), and the liquid drain passage (18) communicates with the recovery chamber (19). The liquid component is collected in the liquid collection drum (20) housed in the collection chamber (19).

Reference numeral (21) in the figure denotes a conveyor type treated gas can unloading device arranged below the discharge chamber (6) of the waste gas can, and the end portion of this treated gas can unloading device (21). A receiving container (22) is arranged in the. Further, reference numeral (23) is an inert gas supply source for replacement, which is composed of a nitrogen gas cylinder, a nitrogen generator such as PSA, and the like, and is a processing chamber (4) or a charging chamber (5).
Alternatively, the discharge chamber (6) can be supplied with dry nitrogen.

The operation procedure of the waste gas can processing device having the above-mentioned structure will be described below. With the partition (13) between the charging chamber (5) and the processing chamber (4) and the partition (14) between the processing chamber (4) and the discharge chamber (6) closed, the processing chamber ( While introducing nitrogen gas from the inert gas introducing pipe (16) communicating with 4),
The atmosphere gas in the processing chamber (4) is exhausted through the gas outlet pipe (17), so that the oxygen concentration in the processing chamber (4) is replaced with nitrogen so as to be 10% or less.

Then, the waste gas can is thrown into the charging chamber (5) with the partition (13) arranged between the charging chamber (5) and the processing chamber (4) closed, and the charging chamber (5) is charged. Close the partitioning tool (12) placed at the entrance of the container and close the inside of the charging chamber (5).
By introducing nitrogen gas from the inert gas introducing pipe (16) communicating with (5) and discharging the atmospheric gas in the charging chamber (5) through the gas discharging pipe (17), the charging chamber ( The atmosphere gas in 5) is replaced with nitrogen gas to remove air components.
At this time, the atmospheric gas in the discharge chamber (6) is also replaced with nitrogen gas to remove air components.

When the inside of the charging chamber (5) is replaced with nitrogen gas,
The rotating rollers (1) (2) and the transfer device (3) are operated, and the partitioning tool (13) and the processing chamber (4) and the discharge chamber arranged between the charging chamber (5) and the processing chamber (4) Partition (14) between (6)
Open to operate the waste gas can in the charging chamber (5) into the processing chamber.
It is dropped and supplied to (4), the waste gas can is crushed by the rotating rollers (1) and (2), and transferred to the discharge chamber (6) which is transferred by the transfer device (3). At this time, since the charging chamber (5) is in a nitrogen gas atmosphere, a low oxygen atmosphere can be maintained in the processing chamber (4). Then, in the processing chamber (4), a pair of rotating rollers (1)
The waste gas can charged by (2) is crushed, transferred to the discharge chamber (6) side by the transfer device (3), and charged into the discharge chamber (6).

When the waste gas can is crushed, the liquefied petroleum gas remaining in the waste gas can is ejected into the processing chamber (4). As described above, the liquefied petroleum gas is liquefied petroleum gas in the processing chamber (4). Since it is a low oxygen atmosphere outside the explosive range, the liquefied petroleum gas will not cause explosive combustion. Further, the liquid component remaining in the gas can flows out into the processing chamber (4) due to the crushing of the waste gas can, and the liquid component flowing out into the processing chamber (4) is discharged from the transfer device (3). Drainage (18)
The liquid can be collected in the liquid collecting drum can (20) in the collecting chamber (19) via.

Next, the rotating rollers (1) and (2) and the transfer device.
While stopping the operation of (3), the inlet side partition (14) of the discharge chamber (6) and the outlet side partition (13) of the charging chamber (5) are closed,
Nitrogen gas is introduced from the inert gas introducing pipe (16) connected to the charging chamber (5) and the discharging chamber (6), respectively, and the atmosphere gas of the charging chamber (5) and the discharging chamber (6) is also introduced. Is discharged through the gas outlet pipe (17), so that the atmosphere gas in the processing chamber, in which the liquefied petroleum gas component flowing into the charging chamber (5) and the discharging chamber (6) is mixed, is replaced with nitrogen gas.

When the atmosphere gas replacement of the charging chamber (5) and the discharge chamber (6) is completed, the outlet side partitioning tool (15) of the discharge chamber (6) is opened to treat the treated gas in the discharge chamber (6). The can is carried out by the treated gas can carry-out device (21). When the discharge of the treated gas can from the discharge chamber (6) is completed, the outlet side partitioning tool (15) of the discharge chamber (6) is closed. Then, in the charging chamber (5), open the entrance side partition (12),
The waste gas can is charged into the charging chamber (5), and the above-mentioned processing is repeated.

Therefore, even when external air flows into the discharge chamber (6) and the charging chamber (5) when the treated can is discharged and when the waste gas can is charged, the external air enters the processing chamber (4). Therefore, the inside of the processing chamber (4) does not have an oxygen concentration corresponding to the explosion region of liquefied petroleum gas.

In the above embodiment, the waste gas can is put into the charging chamber (5) after the processed cans have been carried out from the discharging chamber (6). It is also possible to carry out unloading of the treated can and charging of the waste gas can into the charging chamber (5) in parallel.

Then, by processing the waste gas can, the processing chamber
Since the inside of (4) is filled with liquefied petroleum gas, when all the waste gas cans have been processed, the processing chamber (4)
Nitrogen gas is introduced from an inert gas introduction pipe (16) communicating with the chamber, and the atmosphere gas in the processing chamber (4) is introduced into the gas discharge pipe.
It is discharged through (17) and the atmosphere in the processing chamber (4) is replaced with nitrogen.

Exhaust gas at the time of replacement is burned by a combustion device (not shown) except when the processing chamber (4) is replaced at the beginning of work and the charging chamber (5) and the discharge chamber (6) are replaced first. I am doing it. Further, the treated gas cans carried out by the treated gas can carrying-out device (21) are collected in a receiving container (22), and thereafter, they are solidified into a block shape by a scrap compression device (not shown). .

In the above embodiment, the sprocket gears (8) mounted on the other shaft are fitted between the sprocket gears (8) mounted on one shaft adjacent to each other. The rotating rollers (1) and (2) are formed,
As the rotating rollers (1) and (2), a pair of rotating rollers having spike pins provided upright on the peripheral surface, or a disk-shaped rotating blade may be used.

[0027]

According to the present invention, the processing chamber is maintained in an inert gas atmosphere, the charging chamber is disposed above the processing chamber of the waste gas can, and the discharging chamber is disposed below the processing chamber. Since the exhaust chamber can be replaced with an inert gas, even if a flammable gas leaks from the waste gas can during processing of the waste gas can, the process chamber is kept in an inert gas atmosphere. In addition, since the inert gas is replaced at the inlet / outlet port of the processing chamber, the waste gas can can be processed without igniting the leaked combustible gas in the processing chamber.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a waste gas can processing device.

FIG. 2 is a perspective view of a crush roller portion taken out.

FIG. 3 is a perspective view of a transfer device taken out in the waste gas can processing device.

FIG. 4 is a timing chart showing operation timings in each part of the processing apparatus.

[Explanation of symbols]

1.2 ... Rotary roller, 4 ... Processing chamber, 5 ... Injection chamber, 6 ... Discharge chamber, 12.13,14,15 ... Partitioning tool.

Continued front page    (72) Inventor Tatsuhiko Hashimoto             3-21-8 Nishi-Shimbashi, Minato-ku, Tokyo Product from Iwatani             Business headquarters in Tokyo (72) Inventor Yuuji Komori             1095 Katsube Town, Moriyama City, Shiga Prefecture Iwatani Corporation             Shiga Technology Center (72) Inventor Junji Saida             3-21-8 Nishi-Shimbashi, Minato-ku, Tokyo Product from Iwatani             Business headquarters in Tokyo (72) Inventor Yasumasa Idei             Fuji Vehicle Stock Co., Ltd. 1 Chiyo-cho, Moriyama City, Shiga Prefecture             Company Shiga factory F-term (reference) 4D065 CB02 CC08 DD09 EA07 EB20                       ED06 ED12 ED16 ED18 ED25                       ED38                 4D067 EE01 EE04 EE39 EE47 EE50                       GA20 GB03

Claims (2)

[Claims] 1. A processing chamber (4) formed in the main body of the processing apparatus.
A pair of rotating rollers (1) and (2) are rotatably arranged around a horizontal axis, and a waste gas can is inserted between the rotating rollers (1) and (2) to extract the residual liquefied petroleum gas from the waste gas can. In the waste gas can processing method as described above, a waste gas can input chamber (5) is formed in the upper part of the processing chamber (4), and a waste gas can discharge chamber (6) is formed in the lower part of the processing chamber (4). However, a partitioning tool (1
2) (13) (14) (15) are arranged respectively, and the processing chamber (4), the charging chamber (5), and the discharge chamber (6) can be replaced by inert gas, respectively, and the processing chamber can be started at the start of processing. Replace the inside of (4) with an inert gas and maintain the inside of the processing chamber (4) at a low oxygen concentration outside the explosive range of liquefied petroleum gas. A method for treating a waste gas can, which is characterized in that it is connected to the treatment chamber (4) after replacement. 2. The method for treating a waste gas can according to claim 1, wherein the oxygen concentration in the treatment chamber (4) is replaced with nitrogen gas so that the oxygen concentration becomes 10% or less.