JP3148578U - Vacuum processing equipment for emulsified waste liquid - Google Patents

Abstract

Disclosed is a vacuum processing apparatus for emulsified waste liquid, which can process a large amount of waste liquid quickly, efficiently and inexpensively. An inside of the vacuum decompression chamber has a vacuum decompression chamber, a fine atomization device for spraying or thinning the emulsified waste liquid into a dispersion device, and dispersing the emulsified waste liquid in a lower portion. Vacuum depressurization device having a storage tank, means for supplying emulsified waste liquid to the atomizing device in a pumped state, a steam duct for taking out water vapor evaporated in the vacuum depressurization chamber, a vacuum duct communicating with the vacuum depressurization chamber through the steam duct, and vacuum depressurization A vacuum depressurizing means for maintaining the chamber in a vacuum depressurized state, a liquefying device for cooling and liquefying the water vapor flowing from the steam duct, and a means for discharging the waste liquid from which moisture has been removed from the vacuum depressurizing device. . [Selection] Figure 1

Description

  The present invention, for example, emulsified waste liquid for separating the moisture from the emulsified waste liquid that has been dispersed and deteriorated in the lubricating oil used in ship engines or power plant engines, etc. to regenerate the lubricant This relates to a vacuum processing apparatus.

  As a conventional emulsification waste liquid treatment apparatus, there is a method in which oil-water separation is performed over a long period of time or an electrochemical treatment is performed.

  However, in the conventional method described above, the water separation process in the so-called emulsified state in which the water is electrically stably dispersed in the oil in a finely divided state has not only limited separation ability but also time and cost. It was extremely difficult to put it into practical use.

  The problem to be solved by the present invention is to provide a vacuum processing apparatus for emulsified waste liquid that can be processed quickly, efficiently and inexpensively even with a large amount of waste liquid.

  The vacuum processing apparatus for emulsified waste liquid according to the present invention comprises a fine atomization apparatus that has a vacuum decompression chamber with the inside kept in a vacuum decompression state, and sprays or thinly disperses the emulsification waste liquid in the vacuum decompression chamber. A vacuum decompression device having a storage tank for storing the emulsified waste liquid at the bottom, means for supplying the emulsified waste liquid to the fine atomizer in a pumped state, a steam duct for taking out water vapor evaporated in the vacuum decompression chamber, A vacuum depressurization means that communicates with the vacuum depressurization chamber through a steam duct and maintains the vacuum depressurization chamber in a vacuum depressurization state; a liquefaction device that cools and liquefies water vapor flowing from the steam duct; and the vacuum depressurization device And a means for discharging the waste liquid from which moisture has been removed.

  The vacuum processing apparatus for emulsified waste liquid according to the present invention has an advantage that water can be efficiently separated from waste oil even at a relatively low temperature by basically utilizing the vapor pressure difference between water and oil. Moreover, since it can process at low temperature, waste heat or the heat | fever accumulate | stored in the process liquid can be utilized, and it becomes an environmentally friendly process by not requiring a new heat source.

  FIG. 1 is an explanatory view of an embodiment of the device of the present invention, wherein 1 is a stock solution tank, 2 is a vacuum decompression device, 3 is a supply pipe, 4 is a self-feed / forced switching valve, 4a is a supply pump, and 5 is a fine particle. An atomizer, 6 is a dispersing device, 7 is a heating plate, 8 is a liquid level adjusting weir, 9 is a discharge pipe, 10 is a steam duct, 11 is a liquefier, 12 is a cooler, 13 is a vacuum pump, and 14 is a drain pipe. , 15 is an engine, 16 is a bearing, 17 is a cooler, and 18 is a filter.

  The stock solution tank 1 stores an emulsified waste liquid (emulsion of waste oil, water, and other solids such as sludge), and is supplied into the storage tank 2a of the vacuum decompression device 2 as necessary. The supply amount of the emulsified waste liquid supplied into the storage tank 2a is appropriately adjusted by the supply controller 2b. During operation of the engine 15, the emulsified waste liquid is sent to the heating plate 7 through the pipes 7 a and 7 b, the heating plate 7 is heated, and the evaporation heat is supplementarily applied to the thin film on the dispersion device 6 to promote evaporation. Let

  The emulsified waste liquid in the storage tank 2 a is sent to the atomizing device 5 through the supply pipe 3. In the middle of the supply pipe 3, the supply pump 4 a is provided, and the emulsified waste liquid is pumped to the fine atomizer 5.

  From the fine atomizing device 5, the emulsified waste liquid is fine and sprayed into the vacuum decompression chamber 2c and descends onto the dispersing device 6 to form a thin film. The vacuum decompression chamber 2c is placed in a decompressed state (for example, -0.6 atm) by the vacuum pump 13 through the steam duct 10 and the liquefying device 11, so that moisture and a part of the sprayed emulsified waste liquid are contained. The oil is evaporated from the film state on the dispersing device 6 during the fall or sent to the steam duct 10. Since this evaporation occurs depending on the degree of vacuum in the vacuum decompression chamber 2c and the temperature of the waste liquid, it is easy to evaporate even at a relatively low temperature in a decompressed state close to vacuum.

  Waste liquid that does not evaporate descends and flows from the dispersing device 6 onto the heating plate 7 and is returned to the storage tank 2a for recirculation. When the liquid in the storage tank 2a exceeds a certain liquid level, it overflows from the liquid level adjusting weir 8 to the discharge tank 2d and is discharged from the discharge pipe 9 to the outside. This discharged liquid (waste liquid from which moisture has been removed) is removed from solids such as sludge by a conventionally known separation technique, and becomes regenerated oil.

  The inside of the steam duct 10 becomes lower in temperature as it approaches the liquefying device 11. In particular, in the rising area 10a on the steam duct 10 side, the oil component is liquefied out of the moisture (water vapor) and some oil components in the vapor state, and flows backward along the inclination of the steam duct 10 in the rising area 10a. Return to the vacuum decompression chamber 2c.

  The steam from which the oil has been removed passes through the steam duct 10 and enters the liquefaction device 11 where it is cooled to water and discharged from the drain pipe 14. Cooling water circulates in the cooler 12 to cool the inside of the liquefying device 11.

It is explanatory drawing which shows one Example of this invention apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stock solution tank 2 Vacuum decompression device 2a Storage tank 2b Supply controller 2c Vacuum decompression chamber 2d Discharge tank 3 Supply pipe 4 Self-supply / forced switching valve 4a Supply pump 5 Atomizer 6 Dispersing device 7 Heating plate 8 Liquid level adjustment weir 9 Discharge Pipe 10 Steam duct 10a Ascending zone 11 Liquefaction device 12 Cooler 13 Vacuum pump 14 Drain pipe 15 Engine 16 Bearing 17 Cooler 18 Filter

Claims (1)

The inside of the vacuum decompression chamber has a vacuum decompression chamber, and is equipped with a fine-grain atomizing device that sprays or thinly disperses the emulsified waste liquid into the dispersion device, and a storage tank for storing the emulsified waste liquid at the bottom. A vacuum depressurizing device, means for supplying the emulsified waste liquid to the atomizing device in a pumped state, a steam duct for taking out water vapor evaporated in the vacuum depressurizing chamber, and the vacuum depressurizing chamber through the steam duct, A vacuum depressurization means for keeping the vacuum depressurization chamber in a vacuum depressurized state, a liquefying device for cooling and liquefying the water vapor flowing from the steam duct, and a means for discharging the waste liquid from which moisture has been removed from the vacuum depressurization device; A vacuum processing apparatus for an emulsified waste liquid.