JP2534606Y2 - Distillation residue treatment equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distillation residue processing apparatus used for a dry cleaning apparatus.

[0002]

2. Description of the Related Art In order to clarify the meaning of distillation in the process of dry cleaning, the conventional operation steps of a dry cleaning apparatus are summarized and shown in FIGS. 2 and 3 to 6. FIG. 3 to 6 summarize the contents of each step.

First, the outline of the operation process will be described with reference to FIG. 2. Clothes put into a dry cleaning device are cleaned through pre-washing, high-speed centrifugal dewatering, main washing, high-speed centrifugal dewatering, drying and deodorizing processes. Out of the machine. However, the solvent used for pre-washing in this case has a high degree of contamination and is sent to a still to be distilled and reused. The solvent used for the main washing is returned to the original tank without being distilled, and is often used for the next prewash.

Next, the operation steps of the conventional dry cleaning apparatus will be described with reference to FIGS. 3 to 6. First, FIG. 3 shows a case of pre-washing, in which clothing 1 is put into a rotating drum 3 in a processing tank 2 and Wash the solvent while pumping and circulating it with a pump.

Next, FIG. 4 shows a case of drainage, in which after the pre-washing, the rotating drum 3 is rotated at a high speed to drain the clothes, and the dirty solvent is sent to the still 6 by the pump 5. The solvent discharged to the still is heated by steam or electricity, and the solvent is evaporated and condensed and liquefied by a condenser 8 cooled by cooling water 7, and returns to a solvent tank 10 via a water separator 9.

Next, FIG. 5 shows a case of the main washing, in which the solvent is again pumped from the tank 4 and further replenished from the tank 10,
Washing is performed while passing through the filter 11. Also at this time detergent 1
Input 2. After the washing, all the solvent returns to the tank 4.

Next, FIG. 6 shows a case of drying. When the fan 13 generates an air flow in the surrounding system, the solvent gas passes through a lint filter 14 for catching lint, is cooled by a refrigerator or water, and is cooled by an air cooler 15. Liquefied and recovered. The air is warmed by a preheater 16 utilizing the exhaust heat of the refrigerator, and further heated by an air heater 17 to a set value of a thermostat (not shown) to blow against clothing to evaporate the solvent. In the deodorization, the air volume of the fan 13 is reduced,
The gas concentration is lowered by deep cooling in the air cooler 15.

[0008]

In FIG. 3 to FIG. 6, the solvent used for pre-washing is sent to the still 6 and distilled, but at the end of the distillation, dirt and detergent components are removed as non-volatile components. It remains in the still as a distillation residue in the form of a liquid or sludge. Conventionally, in order to discharge this distillation residue outside the machine,
The operation shown in FIG. 7 was required at least once a day. That is, the still opening door (not shown) of the still is opened, and the bottom 20 of the still 6 is opened.
It was necessary to scrape out the distillation residue 21 into the tray 23 using the scraping rod 22. The distillation residue scraped out in the saucer 23 is entrusted to an industrial waste disposal company for treatment.
Furthermore, it was necessary to transfer to the container 26 convenient for transportation. In addition,
When the distillation residue is scraped out to the tray 23 using the scraping rod 22 described above, the solvent gas 24 and water vapor 25 remaining in the still still flow out, contaminating the working environment, generating an unpleasant odor, and thus dry cleaning. Air pollution by solvents,
It could be one of the causes of groundwater pollution.

Further, in a machine using a fluorine-based solvent Freon R113 (CClF ₂ CCl ₂ F) as a dry-cleaning solvent, the consumption of Freon in the worldwide Freon regulations for preventing ozone layer destruction is considered. It is indispensable to reduce air pollution and air pollution and groundwater pollution in machines that use the chlorinated solvent tetrachloroethylene (CCl ₂ · CCl ₂ ) or 1.1.1-trichloroethane (CH ₃ CCl ₃ ). It is indispensable to reduce the consumption of these solvents as much as possible, as in the case of Freon R113, in order to prevent the above problem. Therefore, from such a viewpoint, it is necessary to prevent the solvent gas from flowing out of the apparatus through the cleaning port during cleaning of the still and diffusing into the atmosphere in a state in which the solvent gas cannot be captured again. When discharging the distillation residue from the distillation apparatus as described above, the solvent gas remaining in the distillation apparatus is not diffused into the working environment, and only the distillation residue is recovered in the container, that is, the distillation residue is recovered in a closed system. Although it is indispensable to do so, the work environment is conventionally polluted, such as the solvent gas flowing out and emitting an odor due to the opening of the distillery cleaner when discharging the distillation residue.

[0010] Further, the container for receiving the distillation residue must be easily available and easy to handle when entrusting the subsequent treatment to an industrial waste disposal company, but it has been conventionally satisfactory. There was no means for treating the distillation residue. In general, it is becoming more necessary for the distillation residue discharge work to be easier than ever with the increase in women and women workers.
It is the most unpleasant work in handling the machine because it emits a bad smell,
Also, even when the gate valve at the bottom of the still is opened to discharge the liquid distillation residue without opening the cleaning port, the diffusion of the off-flavor cannot be prevented. In addition, conventionally, there has been a drawback that the solvent gas remaining in the distiller during cleaning of the distiller flows out of the apparatus through a cleaning port or the like, and the expensive solvent is also lost. The present invention has been proposed to solve the above-mentioned conventional problems.

[0011]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a dry cleaning apparatus comprising a still, a first container for storing a distillation residue, a second container for mainly storing a solvent gas, and a suction device. Transferring and collecting the distillation residue in the distillation apparatus into the first container at a negative pressure generated on the suction side of the suction device, and collecting the air stream containing the solvent gas flowing out from the blowing side of the suction device into the activated carbon solvent recovery device. Is provided to allow the solvent gas in the air stream to be adsorbed on the activated carbon and recovered, and this is used as a means for solving the problem.

[0012]

[Action] The air that has passed through the existing activated carbon solvent recovery device is
By passing through the activated carbon layer, it basically contains no solvent component, and is discharged directly to the atmosphere because there is no problem in terms of pollution. In addition, the first container for the distillation residue can use an empty can of detergent for dry cleaning as it is, can receive several tens of residues, and closes the full container as it is for industrial waste. Can be handed over to a material processing company.

[0013]

FIG. 1 shows an embodiment of the present invention. In the embodiment of FIG. 1, a distillation residue 21 is present at the bottom of the still 6 at the end of distillation. Here, when the gate valve 40 at the bottom of the still 6 is opened and the motor 32 of the suction device 31 is started, the impeller 33 rotates to generate a negative pressure in the second container 35 on the suction side, and the second pressure is passed through the adapter 30. A negative pressure is also generated in one container 25. In addition, 7 is cooling water and 8 is a condenser. The distillation residue 21 is sucked and transferred to the first container 25,
The air flow 19 generated by the high-speed rotation of the impeller transfers only the solvent gas in the first container 25 to the second container 35 via the adapter 30. The adapter 30 is a tool for using the detergent empty can as it is as the first container 25. When the first container 25 is full of residues, it is replaced with another container for use. In addition, the gate valve 42 of the still is opened,
Air is taken in from outside the machine, the distillation residue is transferred to the first container 25, and the air flow blown out from the suction device 31 is passed through the existing activated carbon solvent recovery device 45, so that the solvent gas in the air flow is converted to the activated carbon 45. Collect by adsorption.

[0014]

As described in detail above, the air that has passed through the existing activated carbon solvent recovery device basically contains no solvent component by passing through the activated carbon layer,
Emitted directly to the atmosphere as there is no problem with pollution. In addition, in the present invention, compared with the conventional distillation residue scraping operation, the switch 1 is used.
In addition, since most of the residue can be discharged in a short time of 1 to 2 minutes, the work becomes easy, and handling such as transportation of the residue after the discharge is greatly improved.

[Brief description of the drawings]

FIG. 1 is a flow sheet of a distillation residue treatment apparatus showing an embodiment of the present invention.

FIG. 2 is a block diagram showing operation steps of a conventional dry cleaning device.

FIG. 3 is an explanatory diagram showing an operation process of a conventional dry cleaning device in detail.

FIG. 4 is an explanatory diagram showing an operation process of a conventional dry cleaning device in detail.

FIG. 5 is an explanatory diagram showing an operation process of a conventional dry cleaning device in detail.

FIG. 6 is an explanatory diagram showing an operation process of a conventional dry cleaning device in detail.

FIG. 7 is an explanatory view of a conventional distillation residue scraping operation.

[Explanation of symbols]

 6 Distiller 7 Cooling water 8 Condenser 10 Condensate 19 Air flow 21 Distillation residue 25 First container 30 Adapter 31 Suction device 32 Motor 33 Impeller 34 Filter 35 Second container 40, 42 Gate valve 45 Activated carbon solvent recovery device

Claims (1)

(57) [Scope of request for utility model registration] 1. A dry cleaning apparatus, comprising: a distilling device, a first container for storing a distillation residue, a second container for mainly storing a solvent gas, and a suction device, and suctioning the distillation residue in the distillation device. A circuit is provided for transferring and recovering the first container with the negative pressure generated on the suction side of the device and passing the air flow containing the solvent gas flowing out from the discharge side of the suction device through the activated carbon solvent recovery device. A distillation residue treatment apparatus, wherein the solvent gas is recovered by adsorption on activated carbon.