KR200384132Y1 - Reproducing device of waste oil - Google Patents

Abstract

 The present invention relates to a waste liquid regeneration apparatus to prevent waste of resources and environmental pollution by distilling and liquefying hydrocarbon-based organic solvent waste liquid (waste oil) generated during various parts washing process to be re-used by thermal oil.

Description

Waste Recycling Equipment {REPRODUCING DEVICE OF WASTE OIL}

The present invention relates to a waste liquid regeneration apparatus that can reduce waste of resources and environmental pollution by distilling and liquefying hydrocarbon-based organic solvents to be reused for reuse.

With the continuous development of various industries such as automobile, machinery, metal, chemical, aviation, electronics, etc., the importance of the parts industry is increasing day by day. It removes impurities such as injection mold release agent and dust or oil to ensure precise assembly and surface coating or printing.

These parts (injection parts, cell phone cases, etc.) use volatile organic solvents (hydrocarbon-based organic solvents or petroleum solvents) as cleaning liquids so that impurities such as injection release agents and dust or oil can be removed cleanly. After several parts cleaning, the cleaning solution is contaminated by release agents, machine oil, dust, injection dust, static electricity, and so on.

If the contaminated washing solution is reused, the cleaning failure rate increases due to secondary contamination. Therefore, the contaminated washing solution is discarded and replaced with a new washing solution to prevent secondary contamination. The waste liquid (waste oil) discarded after washing is It can be said to be the main cause of pollution. The waste liquid is preferably recycled and recycled, but there are a lot of difficulties in recycling or processing thereof due to the burden of facility costs and after-care costs.

Accordingly, an object of the present invention is to provide a waste liquid regeneration apparatus to prevent waste of resources and environmental pollution by distilling and liquefying hydrocarbon-based organic solvent waste liquid (waste oil) generated during the washing of various parts to be reused. .

In order to achieve the above object, a filter for filtering foreign matter or impurities in the waste liquid introduced from the washing tank by a pump, a heat exchange tank for warming the filtered waste liquid, a heating tank for heating the heat medium oil of the heating tank with an electrothermal heater, and an indirect heat of the heat medium oil. A distillation tank for distilling the waste liquid by heating it to a boiling point or more (hydrocarbon-based) organic solvent and a viscous residue, distilling tank for cooling and liquefying distilled gas, a cooling apparatus for maintaining the cooling temperature of the cooling tank, Level sensor and temperature sensor to detect the liquid level and temperature of distillation tank, heating tank and cooling tank respectively, discharge pipe for discharging liquefied regeneration liquid into container or discharge to washing tank, heat exchange tank, heating tank, distillation tank and cooling tank Cleaning discharge pipes installed on the floor and discharging mucus residues accumulated on the floor to the outside, and It consists of a controller and the like.

The pump is preferably a diaphragm pump capable of pumping highly volatile or viscous and flammable waste liquids, and the temperature and temperature of the heating and cooling tanks may vary depending on the boiling point and chemical and physical properties of the waste liquid recycled through the controller's setting unit. Temperature atmosphere, liquid level, etc. are appropriately set and controlled.

The heat medium oil of the heating tank is kept at a predetermined temperature among the temperatures in the range of 60 ° C to 150 ° C according to the boiling point of the waste liquid, and the antifreeze of the cooling bath is a compressor, a condenser, an evaporator (cooling coil), a capillary tube (expansion valve), A conventional cooling device composed of a pipe or the like for circulating a refrigerant is maintained at a constant temperature in the appropriate range of cooling temperature in the temperature range of 1 ~ 25 ℃.

In the waste liquid regeneration apparatus of the present invention, the contaminated waste liquid is washed by indirect heating using heat medium oil to be vaporized, and is rapidly regenerated into a liquid phase by rapidly liquefying vaporized steam by the heat exchange action of the cooling means.

The present invention can be applied to the regeneration of various kinds of organic solvents as well as to the washed waste liquid, and the waste liquid is recovered, regenerated, and reused, thereby reducing the purchase cost of organic solvents, reducing the disposal cost, improving the working environment, and preventing environmental pollution. It is environmentally friendly as it can be automated.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the embodiments of the present invention, the same elements in the drawings are denoted by the same reference numerals as much as possible, and detailed descriptions of related known configurations or functions will be omitted so as not to obscure the subject matter of the present invention.

FIG. 1 shows the waste liquid regeneration device 2 of the present invention which indirectly heats the waste liquid WO with heat medium oil and distills the same, and then cools the waste liquid to a liquefied state.

The waste liquid regeneration device 2 includes a filter F for filtering foreign substances or impurities in the waste liquid WO introduced from the washing tank T0 by a pump P, and the waste liquid WO filtered by the filter F. Heat exchange tank (T1) to warm the primary heat, distillation tank (T3) to distill the first warmed waste liquid (WO) by indirect heating of the heat medium oil (EO), and heat medium oil (EO) of the heating tank (T2). A heat transfer heater (H) for heating the gas, a heating tank (T2) for indirectly heating the distillation tank (T3) with heat medium oil (EO), a cooling tank (T4) for cooling and liquefying the distilled gas, and a cooling tank ( T4) Leveling device (L1) (L2) for sensing the liquid level and temperature of the cooling device (R) maintaining the antifreeze (NA) temperature, and the heating tank (T2), distillation tank (T3) and cooling tank (T4), respectively. (L3) and the temperature sensor (S1) (S2) (S3), the discharge pipe (P2) to put the organic solvent regenerated in the liquefied state in the container (V) or discharge to the washing tank (TO), and the heat exchange tank (T1) ) And the bottom of the heating tank (T2), distillation tank (T3) and cooling tank (T4) A cleaning discharge pipe (P3), (P4), (P6) (P7) and a controller having respective valves (V2), (V3), (V4) and (V7) to discharge the viscous residues that are installed and accumulated on the floor to the outside; Largely constituted by (C), respective valves V1 and V5 are also installed in the inlet pipe P1 through which the waste liquid WO flows and the discharge pipe P2 through which the regeneration liquid is discharged.

The pump (P) is preferably a diaphragm pump or the like capable of pumping high volatility or flammable and viscous waste liquid without abnormality, and the waste liquid WO recycled through the setting unit S of the controller C. Depending on the boiling point and the chemical and physical properties, the temperature, the temperature atmosphere and the liquid level of the heating tank T2 and the cooling tank T4 are appropriately set and controlled.

The heating medium T2 of the heating tank T2 is kept constant at a predetermined temperature among temperatures ranging from 60 ° C to 150 ° C according to the boiling point of the waste liquid WO, and the cooling device C includes a compressor, a condenser, and an evaporator. (Cooling Coil), a capillary tube (expansion valve), a pipe for circulating a refrigerant, and the like is a conventional cooling device is maintained at a constant cooling temperature of the appropriate range of the temperature range of 1 to 25 ℃.

Although not shown in the drawings, the heating tank T2 and the cooling tank T4 are provided with a screw that rotates by a motor so that the thermal oil (EO) and the antifreeze (CP) can be forcedly circulated to improve heat exchange efficiency. have.

On the other hand, in the distillation tank (T3) installed in the center of the heating tank (T2), as shown in Fig. 3, a plurality of tubular bodies (6) having excellent thermal conductivity are installed vertically or horizontally inside the cylinder (4) having excellent thermal conductivity. The inner through hole 8 of the tubular body 6 exposed to the heating tank T2 is opened up and down to circulate the heat medium oil EO so that the heat exchange area is greatly expanded, thereby improving thermal efficiency.

That is, the upper and lower outer circumferential surfaces of the tubular body 6 penetrating the distillation tank T3 vertically (or horizontally) are welded or joined to the heating tank T2 to maintain the airtight (watertight) state, and thus the heating with the distillation tank T3. The tank T2 is isolated from each other and only heat is transferred.

Therefore, the heat medium oil EO heated by the heat transfer heater H freely passes through the through hole 8 of the tube 6 and indirectly with the waste liquid WO introduced into the distillation tank T3 through the inlet pipe 10. The heat transfer is efficiently performed while the waste liquid (WO) inside the distillation tank (T3) is heated to a temperature higher than the boiling point, and the waste liquid (WO) is retained by the hydrocarbon-based organic solvent (12) and the slime due to stable thermal decomposition. Decomposes into water (14).

The vaporized organic solvent 12 is transferred to the heat exchange coil EP1 in the heat exchange tank T1 through the exhaust pipe 16, and the residue 14 falls to the bottom 18.

The bottom 18 of the distillation tank T3 is configured to have an inclined shape that gradually decreases toward the center portion, and a cleaning discharge pipe P4 having a valve V4 is installed at the bottom apex of the bottom 18. The residue 14 is configured to be easily discharged to the outside from time to time or as necessary.

The bottom 18 of the distillation tank (T3) by installing a sensor that can detect the mucous residue 18 may be configured to alarm to be able to remove the residue 18 at an appropriate time.

Tilt bottom θ of the distillation tank is advantageous as the tilt is inclined, but the residue 14 is viscous rather than solid, and is easily discharged through the cleaning discharge pipe P4 when the valve V4 is opened. It can be configured with a slope in the range of ~ 40 °.

The separated and distilled gaseous organic solvent 12 undergoes heat exchange while passing through a heat exchange coil EP1 installed in the heat exchange tank T1. The heat exchange coil EP1 is formed by winding a pipe having excellent heat conduction heat in the form of a coil for efficient heat exchange.

The lowest apex formed in the bottom 18 of the distillation tank T3 may be configured on one side of the bottom 18 instead of the center of the bottom 18.

In the present invention, by installing a relief valve (FV) in the tubular portion between the distillation tank (T3) and the heat exchange coil (EP2) to discharge through the relief valve (FV) when the pressure is greatly increased by closing the valve (V5) The waste liquid regeneration device 2 is protected.

Waste heat (WO) of the atmospheric temperature (room temperature) flows into the heat exchange tank (T1), so that the high temperature organic solvent in the vaporized state passes through the heat exchange coil (EP1) installed inside the heat exchange tank (T1) and the waste solution (WO). Since the first cooling by the indirect contact of the liquefaction by the second cooling in the cooling tank (T4), the heat exchange efficiency is greatly improved.

The waste liquid WO at atmospheric temperature (room temperature) flowing into the heat exchange tank T1 is first warmed by a high temperature organic solvent in a vaporized state passing through the heat exchange coil EP1 and then introduced into the distillation tank T3. Evaporation to the vaporized state greatly improves the heat exchange efficiency.

That is, the waste liquid (WO) introduced for regeneration is warmed in the heat exchange tank (T1) by a high temperature organic solvent indirectly contacted, and the vaporized organic solvent is naturally cooled by the waste liquid (WO) in the heat exchange tank (T1). This is an excellent and stable distillation.

In the present invention, when the waste liquid (WO) is recycled, the pump (P) ⇒ filter (F) ⇒ inlet pipe (P1) ⇒ heat exchange tank (T1) ⇒ distillation tank (T3) ⇒ heat exchange coil inside the heat exchange tank ( EP1) ⇒ Heat exchange coil (EP2) ⇒ discharge pipe (P2) ⇒ vessel (V) or washing tank (T0) inside the cooling tank.

Looking at the configuration of the heating tank (T2), as shown in Figure 2, the heat insulator 20 is filled in a metal case, such as stainless steel having excellent oxidation resistance, fire resistance and heat resistance, the handle on the open upper portion of the heating tank (T2) A cover 24 having a 22 is installed to open and close, and is configured to replenish the heat medium oil EO or to repair and clean the inside of the heating tank T2, and the distillation tank T3 may be a heating tank ( T2) It is fixed not to flow inside the center.

In addition, a plurality of heat transfer heaters H are installed at the bottom of the heating tank T2 to heat the heat medium oil EO at a predetermined temperature among the temperatures in the range of 60 ° C to 150 ° C depending on the boiling point of the waste liquid WO. The temperature of the heat medium oil EO is indirectly transmitted to the waste liquid WO inside the distillation tank T2 and is evaporated while the waste liquid WO is heated above the boiling point.

The boiling point of the heat medium oil (EO) is higher than this 200 ℃ or higher, the temperature sensing temperature of the level sensor (L2) and heat medium oil (EO) for detecting the liquid level of the heat medium oil (EO) on one side of the heating tank (T2) The sensor S2 is installed.

The level sensors L1, L2, and L3 are upper and lower pipe bodies La such that thermal oil EO, waste liquid WO, antifreeze NA, and the like may enter the upper and lower portions as shown in FIG. Lb) and a vertical tube Lc connected to the upper and lower tube bodies La and Lb, and a level sensor having a rich man 26 is installed inside the vertical tube Lc.

One or more of the level sensors L1, L2 and L3 may be provided with a permanent magnet 28 in the rich 26, and two or more inside the non-magnetic tube 30 fastened to the vertical tube Lc. Permanent magnets 28 are provided when the rich 26, which is installed in the upper and lower points of the tubular body 30, is installed at the upper or lower points of the tubular body 30 by installing the hall sensors 32 and 34. Since the Hall sensors 32 and 34 are sensed by the magnetic force of the liquid level, the liquid level is detected, and the controller C detects this to control the pump P to maintain the proper liquid level.

The rich 26 is a structure in which air or gas is sealed therein to rise, the searing 36, 38 coupled to the upper and lower pipes 30 to prevent excessive rise or excessive drop of the rich 26 do.

The temperature sensors S1, S2, and S3 respectively installed in the heating tank T2, the distillation tank T3, and the cooling tank T4 are thermal fluid oil (EO), waste liquid (WO), and antifreeze (NA). Each temperature is detected and input to the controller (C).

Looking at the configuration of the cooling tank (T4), like the heating tank (T2), the heat insulating material 20 is filled in a metal case, such as stainless steel having excellent heat resistance, such as oxidation resistance fire resistance, the cooling tank (T4) containing the antifreeze (NA) Cooling coil (CP1) connected to the cooling device (R) is installed in the interior of the antifreeze (NA) is cooled to the set temperature, the heat exchange coil (EP2) is installed in close proximity to the cooling coil (CP1), The cooling coil EP2 and the heat exchange coil EP2 are immersed in the antifreeze NA, and have a structure in which a pipe having excellent heat conduction heat is wound in a coil form for efficient heat exchange.

The cooling device R is a conventional cooling device composed of a compressor, a condenser, an evaporator (cooling coil), a capillary tube (expansion valve), and a pipe for circulating a refrigerant. The organic solvent 12 in the vaporized state passing through the heat exchange coil (EP2) is liquefied by the cooling temperature and is discharged through the discharge pipe (P2), and the regeneration treatment solvent discharged is discharged to the container (V). It may be stored and reused or fed directly to the wash tub T0 for reuse.

The upper side of the cooling tank (T4) is installed to open and close the cover 24 having a handle to refill the antifreeze (NA) or to repair and clean the interior of the cooling tank (T4), the case side A level sensor L3 for detecting the liquid level of the antifreeze NA and a temperature sensor S3 for detecting the temperature of the antifreeze NA are installed.

A cleaning discharge pipe P7 having a valve V7 is installed at or near the bottom of the cooling tank T4 for cleaning. And the cooling device can of course use a thermoelectric semiconductor cooling means that does not use a refrigerant.

FIG. 6 is a circuit block diagram of the present invention as shown in one embodiment. Power ON / OFF, temperature setting, and the like may be performed at an input of a control unit CP configured of a central processing unit (CPU) or the like. Temperature setting part S, the thermal fluid oil temperature sensor S1 for sensing the temperature of the thermal fluid EO, the waste fluid temperature sensor S2 for sensing the temperature of the waste fluid WO, and the temperature of the antifreeze NA Antifreeze temperature sensor (S3) for detecting the, the thermal fluid oil level sensor (L1) for detecting the liquid level of the thermal fluid (EO), waste fluid level sensor (L2) for detecting the liquid level of the waste fluid (WO), antifreeze (NA) The antifreeze level sensor L3 for detecting the level of the liquid crystal is connected, and the display unit D for displaying the temperature and the operating state abnormal state, etc., and the pump P for supplying the waste liquid WO are connected to the output of the control unit CP. ), A plurality of heat transfer heaters (H) for heating the heat medium oil (EO) of the heating bath, and when an abnormality occurs or the setter is operated, Alarm unit (AL), and a cooling unit (R) that emits the beam is connected, respectively.

The heat medium oil (EO) heated by the heat transfer heater (H) is heated to a temperature around 60 ~ 150 ℃ lower than its evaporation temperature (about 200 ℃) is maintained constant temperature, level sensor (L1) (L2) ( L3) emits an alarm when excessive supply or excessive consumption of thermal oil (EO), waste fluid (WO) and antifreeze (NA) occurs. When the heat medium oil is almost consumed), overheating of the heating bath T2 is prevented by shutting off the power supplied to the heat transfer heater H.

In the present invention, a fan rotating by a motor is installed in the heating tank (T2) and the cooling tank (T4) for more efficient heat exchange, so that the thermal fluid (EO) and the antifreeze (NA) are forced to circulate, respectively, to improve the waste liquid regeneration efficiency. It can improve more.

The present invention is safe in use even in the case of flammable organic solvents by distillation by indirect heating method using thermal oil (EO).

The waste liquid that can be regenerated using the waste liquid regeneration device 2 of the present invention includes a lubricating oil used for applications such as engine oil, metal cutting oil and hydraulic oil of a hydraulic machine, as well as various hydrocarbon-based washing liquids.

In general, the cleaning liquid is gradually degraded during use, and heavy metals (zinc, lead, cadmium, chromium, etc.) such as various foreign substances or contaminants separated from the cleaning object flow into the washing liquid and become cloudy. Although heavy metals are contained, they are mostly filtered by the filter (F), so only the liquid waste liquid is supplied and distilled and regenerated. The filter F is replaced with a new one at a periodic or proper time.

In the present invention, in the case of the first washing solution, the washing rate is higher because the chemical reaction is faster than that of the new washing solution (新 液). This can be thought of as dusting a car. For example, it is similar to the principle that dust should be applied to oil when dust is applied.

The present invention as described above is not limited to the present embodiment and the accompanying drawings, various substitutions, modifications and changes are possible within the scope without departing from the technical spirit of the present invention, which is usually in the art It is self-evident for those who have knowledge.

As described above, the waste liquid regeneration device of the present invention regenerates a hydrocarbon-based organic solvent waste liquid such as a washing liquid. In other words, the already used waste liquid is pyrolyzed by heating above the boiling point in the distillation tank, and then vaporized. The vaporized waste liquid is condensed, liquefied and stored in a container for reuse or sent to a washing tank. It can be used to save resources and prevent environmental pollution.

In addition, the present invention can be said to be a breakthrough and desirable device for reducing the possibility of product or parts defects caused by the contamination of organic solvents and reducing the hygiene, environment, and cost in the field of waste liquid treatment, which is directly connected to national health.

In addition, the present invention is a very useful design that can prevent the cost and environmental pollution, etc., due to the waste liquid treatment can be recovered by distillation by continuously distilling and recovering the waste liquid without an operator.

1 is a block diagram of an embodiment of the present invention.

2 is a cross-sectional view of an embodiment of the present invention.

3 is a plan view of an embodiment of the present invention distillation tank.

4 is a cross-sectional view of an embodiment of the present invention distillation tank.

5 is a cross-sectional view of an embodiment of the present invention level sensor part.

6 is a circuit block diagram of an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

(2)-waste recycling system (4)-solid

(6) (30)-Conduit (8)-Public

(10)-inlet pipe (12)-organic solvent

(14)-Exhaust Pipe (18)-Floor

(20)-Insulation (22)-Handle

(24)-Cover (26)-The Rich

(28)-Permanent Magnet (32) (34)-Hall Sensor

(C)-Cooling Unit (CP)-Cooling Coil

(EO)-Heat Media Oil (EP1) (EP2)-Heat Exchange Coil

(F)-Filter (FV)-Relief Valve

(H)-Electric Heater (L1) (L2) (L3)-Level Sensor

(NA)-antifreeze (P)-pump

(P1)-inlet pipe (P2)-outlet pipe

(P3) (P4) (P6) (P7)-Cleaning Drain (T0)-Wash

(T1)-heat exchange bath (T2)-heat bath

(T3)-distillation tank (T4)-cooling tank

(R)-Cooling Unit (S1) (S2) (S3)-Temperature Sensor

(V)-Container (WO)-Waste

(V1) (V2) (V3) (V4) (V5) (V6) (V7)-Valve

Claims (7)

A pump for introducing waste liquid, a filter for filtering foreign substances and impurities in the waste liquid, a heat exchange tank for warming the filtered waste liquid, a distillation tank for distilling the heated waste liquid by indirect heating of the heat medium oil, and a heat transfer for heating the heat medium oil of the heating bath. A heater, a heating tank for indirectly heating the distillation tank with heat medium oil, a cooling tank for cooling and liquefying the vaporized organic solvent, a cooling device for cooling the antifreeze of the cooling tank, and detecting the liquid level and temperature of the heating tank, the distillation tank, and the cooling tank, respectively. It consists of a level sensor and a temperature sensor, a discharge pipe for storing the organic solvent recycled in a liquefied state into a container or discharged to a washing tank, a cleaning discharge pipe having a heat exchange tank, a heating tank, a valve installed at the bottom of the distillation tank and a cooling tank, and a controller. Waste liquid regeneration device. The method according to claim 1; Heat medium oil of the heating tank is maintained at a temperature in the range of 60 ℃ ~ 150 ℃ according to the boiling point of the waste liquid, and the antifreeze of the cooling tank is maintained at a temperature in the range of 1 ~ 25 ℃. The method according to claim 1 or 2; In the distillation tank, a plurality of pipes having excellent thermal conductivity are installed inside the cylinder having excellent thermal conductivity, and the inner through holes of the tube are opened up and down to circulate the thermal oil, and the bottom of the distillation tank is gradually lowered toward the center. And a cleaning discharge pipe having a fork, and having a valve at a lowermost point of the bottom. The method according to claim 1 or 2; The heating tank is filled with a heat insulating material inside the metal case, the cover having a handle on the open top of the heating tank is installed to open and close, the distillation tank is not installed in the center of the heating tank, a plurality of electric heaters are installed in the lower portion of the heating tank A waste liquid regeneration device having a level sensor for detecting the liquid level of the heat medium oil and a temperature sensor for detecting the temperature of the heat medium oil on one side of the heating tank. The method according to claim 1 or 2; The cooling tank is filled with a heat insulating material inside the metal case, the cooling coil connected to the cooling device is installed in the interior of the cooling tank containing the antifreeze round, the heat exchange coil is installed in close proximity to the cooling coil, the protruding to the outside of the cooling tank A valve is installed at one end of the heat exchange coil, and a cover having a handle is opened and closed at one side of the cooling tank, and a level sensor for detecting the liquid level of the antifreeze and a temperature sensor for detecting the temperature of the antifreeze are installed at one side of the case. And a cleaning discharge pipe having a valve at the bottom of the cooling tank. The method according to claim 1 or 2; The level sensor is installed in the upper and lower vertical pipes and the liquid medium and the waste fluid and the antifreeze fluid is installed, the pipe body having a plurality of level sensors inside the vertical pipe is installed, the rich man with a permanent magnet built in the outer peripheral surface Installed waste regeneration device. The method according to claim 1 or 2; The controller inputs a power supply on / off and temperature setting unit, a thermal oil temperature sensor for detecting the temperature of the thermal fluid, a waste liquid temperature sensor for detecting the temperature of the waste liquid, an antifreeze temperature sensor for sensing the temperature of the antifreeze, The thermal oil level sensor for detecting the liquid level of the thermal fluid, the waste liquid level sensor for detecting the liquid level of the waste liquid, and the antifreeze level sensor for detecting the liquid level of the antifreeze are respectively connected. The display unit, a pump for supplying waste liquid, a plurality of electric heaters for heating the heat medium oil of the heating tank, an alarm unit for alerting the operator to an audible recognition when an abnormality occurs or the manipulating the setting unit, and the cooling device, respectively Waste liquid regeneration device, characterized in that connected.