WO2011161818A1 - Solvent recovery device and solvent recovery method - Google Patents

Solvent recovery device and solvent recovery method Download PDF

Info

Publication number
WO2011161818A1
WO2011161818A1 PCT/JP2010/060858 JP2010060858W WO2011161818A1 WO 2011161818 A1 WO2011161818 A1 WO 2011161818A1 JP 2010060858 W JP2010060858 W JP 2010060858W WO 2011161818 A1 WO2011161818 A1 WO 2011161818A1
Authority
WO
WIPO (PCT)
Prior art keywords
solvent
treatment tank
vapor
sewage
heating medium
Prior art date
Application number
PCT/JP2010/060858
Other languages
French (fr)
Japanese (ja)
Inventor
光治郎 大川
Original Assignee
Ookawa Koujiro
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ookawa Koujiro filed Critical Ookawa Koujiro
Priority to PCT/JP2010/060858 priority Critical patent/WO2011161818A1/en
Priority to JP2012521244A priority patent/JP5621099B2/en
Publication of WO2011161818A1 publication Critical patent/WO2011161818A1/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
    • B01D1/222—In rotating vessels; vessels with movable parts
    • B01D1/228—In rotating vessels; vessels with movable parts horizontally placed cylindrical container or drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids

Definitions

  • the present invention relates to a solvent recovery apparatus that separates and recovers a solvent from a sewage or a waste liquid used when cleaning an object to be cleaned such as a semiconductor or an electronic device.
  • ⁇ Precision equipment such as semiconductors and electronic equipment or workpieces that can be cut may be affected by oil or dust, and the cleaning process is performed using a solvent in the manufacturing process.
  • the sewage used for cleaning in the cleaning process contains a solvent that can be reused if recovered in addition to oil and dust. Therefore, from the viewpoint of cost reduction and recycling, a solvent recovery device that separates and recovers the solvent from the sewed liquid is used.
  • the waste liquid used in the cleaning process is heated to evaporate the solvent contained in the waste liquid, the solvent vapor is cooled in the recovery liquid tank, and the solvent is condensed and liquefied to separate and recover the solvent.
  • the solvent recovery apparatuses in which various ideas are made in order to promote the evaporation and evaporation of the heated solvent and efficiently recover it.
  • the waste liquid stored in the waste liquid treatment tank is continuously run on a spiral blade of a screw that is exposed to the liquid surface, and the waste liquid developed in a thin film is heated to a temperature close to the boiling point of the solvent and lower than the boiling point.
  • a solvent recovery device has been proposed that can separate and recover the solvent contained in the sewage used in the cleaning process by continuous heating (see Patent Document 1).
  • an object of the present invention is to provide a solvent recovery apparatus and a solvent recovery method that can efficiently separate and recover a solvent.
  • the present invention includes a sewage treatment tank for storing sewage mixed with an oil and a solvent used for cleaning treatment, and a heat treatment conducted in the sewage treatment tank formed along the outer surface of the sewage treatment tank.
  • a heating medium storage unit for storing the heating medium to be heated, a heating unit for heating the heating medium, a recovery path for recovering the solvent vapor from the waste liquid treatment tank, and condensing and storing the recovered solvent vapor
  • a solvent recovery apparatus comprising a recovery liquid tank and a steam cooling unit that cools the solvent vapor to a temperature at which the solvent vapor supplied to the recovery liquid tank condenses and liquefies.
  • a rotating body that at least the lower part is buried in the waste liquid in the waste liquid treatment tank and lifts the waste liquid to an upper space by rotation, and a rotation drive unit that rotationally drives the rotary body. It is a solvent recovery device.
  • the solvent is composed of, for example, a chlorinated solvent such as dichloromethane, trichlorethylene, perchlorethylene, HCFC (141b or 255), or an inert organic solvent such as HFC or HFE.
  • a chlorinated solvent such as dichloromethane, trichlorethylene, perchlorethylene, HCFC (141b or 255), or an inert organic solvent such as HFC or HFE.
  • the heating medium has a boiling point higher than that of the solvent, and can be a fluid such as oil or mixed liquid, water, etc. having good heat storage and thermal conductivity.
  • the surface area of the sewage can be increased so that the solvent is easily evaporated by being lifted by the rotating body into the space above the sewage treatment tank.
  • the solvent mixed with the sewage lifted in the space above the sewage treatment tank can be evaporated and evaporated in the vicinity of the upper part of the sewage treatment tank, so even a solvent with high gas specific gravity is supplied to the recovery path. It can be easily separated and recovered efficiently.
  • the sewage stored in the sewage treatment tank can be lifted to the upper space in the sewage treatment tank by the rotating body even if the amount thereof decreases. .
  • the rotating body may include a brush portion in which a plurality of linear members are fixed on the circumferential surface of the rotating shaft in the radial direction of the rotating shaft.
  • the rotating body can lift the sewage into the upper space in the sewage treatment tank.
  • the brush portion may be arranged such that the plurality of linear materials are spirally arranged on the rotation shaft.
  • the linear material is arranged without a gap in the longitudinal direction of the rotating rotating shaft, and the filth can be evenly lifted to the upper space of the sewage treatment tank.
  • the linear material can be formed in a corrugated shape extending in the radial direction while corrugating.
  • the linear material can increase the surface area, and more sewage can be lifted to the upper space in the sewage treatment tank.
  • the present invention stores the sewage in which the oil and the solvent used for the cleaning process in the sewage treatment tank are mixed, and is stored in the heating medium storage part formed along the outer surface of the sewage treatment tank.
  • the heating medium that conducts heat into the waste liquid treatment tank is heated by a heating unit, and the vapor of the solvent is recovered from the waste liquid treatment tank to the recovery liquid tank through a recovery path, and is recovered in the recovery liquid tank.
  • a solvent recovery method for separating and recovering the solvent by cooling the solvent vapor to a temperature at which the solvent vapor is condensed and liquefied in a vapor cooling section, wherein at least the lower part of the rotating body rotating on a substantially horizontal rotating shaft is It is a solvent recovery method that is buried in the waste liquid in the waste liquid treatment tank, rotates the rotating body by a rotation drive unit, lifts the waste liquid to an upper space, and promotes evaporation and evaporation of the solvent. It is characterized by.
  • the solvent mixed in the sewage can be evaporated and evaporated at the upper part of the sewage treatment tank, and the solvent can be efficiently separated and recovered even if the specific gravity of the evaporated solvent is heavy.
  • FIG. 5 is a cross-sectional view taken along the line BB in FIG.
  • FIG. 1 is a front view (partially sectional view) showing an appearance of the solvent recovery device 100
  • FIG. 2 is a right side view (partially sectional view) showing the appearance of the solvent recovery device 100
  • FIG. 4 is a front view showing the outer appearance of the rotating brush 103
  • FIG. 4 is a right side view showing the outer appearance of the rotating brush 103
  • FIG. 5 is a cross-sectional view taken along the line BB in FIG. It is sectional drawing shown by.
  • the solvent recovery apparatus 100 includes a heating medium storage unit 101, a sewage treatment tank 102, a rotating brush 103, a heating unit 104, a heater 104a, a heating medium 105, and a gear unit 106.
  • the refrigerating machine 107, the moving caster 108 provided on the lower surface of the refrigerating machine 107, the sewage inlet 109, the oil filler 110, the recovery path 111, the motor 113, and the belt 114.
  • the heating medium storage unit 101 is formed in a substantially box shape and fixed on the upper surface of the refrigerator 107. Further, the sewage treatment tank 102 is formed in a substantially box shape that is slightly smaller than the heating medium storage unit 101, and the front surface, the back surface, the left and right side surfaces, and the bottom surface are separated from the opposing surfaces of the heating medium storage unit 101. Thus, the heating medium 105 can be filled between the heating medium storage unit 101 and the sewage treatment tank 102.
  • the inside of the sewage treatment tank 102 is in a normal pressure atmosphere, and is configured not to perform processing such as pressurization.
  • the collection path 111 is provided at a position slightly higher than the upper end of the rotary brush 103 with respect to the heating medium storage unit 101 and at the approximate center in the axial direction of the rotary brush 103. Thereby, the vapor
  • the heater 104 a is connected to the heating unit 104 through the heating medium storage unit 101.
  • the heating unit 104 and the heating heater 104a are arranged on the left side of the heating medium storage unit 101 so that the heating heater 104a can be accommodated in the front, back, and bottom spaces formed by the heating medium storage unit 101 and the sewage treatment tank 102. (See FIG. 2).
  • the heating medium storage unit 101 is filled with an amount of heating medium 105 that fills the entire interior.
  • the dirty liquid inlet 109 is connected to the middle height of the left side of the heating medium reservoir 101 via a connection pipe 109a.
  • a connection pipe 109a In the middle of the connection pipe 109a, an open / close valve 109b for sending the sewage L stored in the sewage inlet 109 into the sewage treatment tank 102 is connected.
  • the oil filler port 110 is connected to the left end of the upper surface of the heating medium storage unit 101 by a connection pipe 110a.
  • the oil supply port 110 is for replenishing and refueling the heating medium 105 as appropriate.
  • the motor 113 has a substantially vertical rotation axis and is fixedly installed on the upper surface of the heating medium storage unit 101. The rotation of the motor 113 is transmitted to the gear unit 106 via the belt 114 to rotate the rotating brush 103.
  • the gear unit 106 has a drive gear 106a having a substantially vertical rotation axis connected to the motor 113 via a belt 114, and a substantially horizontal rotation axis orthogonal to the substantially vertical rotation axis of the drive gear 106a. It is comprised by the passive gear 106b fixed to the right end of the rotating shaft part 103b of the rotating brush 103, and meshing with the drive gear 106a. The rotation of the substantially vertical axis of the motor 113 is transmitted to the drive gear 106a via the belt 114, and is converted into the rotation of the substantially horizontal axis by the passive gear 106b.
  • the gear portion 106 can be, for example, a bevel gear or a worm gear.
  • the rotating brush 103 includes a brush portion 103a and a rotating shaft portion 103b.
  • the rotating brush 103 even if the brush portion 103a does not contact the inner wall of the sewage treatment tank 102, and the amount of the sewage L stored in the sewage treatment tank 102 decreases, the lower end of the brush portion 103a has the sewage L It is formed in a diameter that can be buried in.
  • the rotating shaft 103b is attached to the middle height in the sewage treatment tank 102 so that the center of the rotating shaft is substantially horizontal. Further, a passive gear 106b is fixed to the right end of the rotating shaft portion 103b.
  • the brush portion 103a is wound around the rotating shaft portion 103b in a spiral manner and fixed by welding or the like so as not to move relative to the rotating shaft portion 103b.
  • the brush portion 103 a is corrugated so that the heat of the sewage L heated so that the solvent S is easily evaporated can be stored, and more sewage L can be lifted.
  • a channel brush having a stainless steel linear material 103c is preferable.
  • a recovery liquid tank 115 is fixedly installed on the upper surface of the refrigerator 107 and on the rear surface of the heating medium storage unit 101. Further, the inside of the waste liquid treatment tank 102 and the inside of the recovery liquid tank 115 are connected by a recovery path 111.
  • the cooling coil 116 is installed in the recovered liquid tank 115 and connected to the refrigerator 107.
  • the recovery path 111 is connected to protrude into the recovery liquid tank 115 at a position slightly higher than the cooling coil 116.
  • the sewage L mixed with the solvent S is put into the sewage inlet 109 or directly into the sewage treatment tank 102 so that at least the lower part of the rotary brush 103 is buried.
  • the tank 102 is filled.
  • the heat of the heating medium 105 heated by the heater 104 a is conducted to the sewage L through the sewage treatment tank 102. At this time, the temperature of the dirty liquid L is adjusted by the temperature of the heating medium 105. Further, the heating medium 105 is heated by the heater 104 a to an appropriate temperature according to the processing purpose of the solvent recovery apparatus 100.
  • the heating medium 105 is heated by the heater 104a so that the temperature of the heating medium 105 is about 10 ° C. higher than the normal-pressure boiling point temperature of the solvent S. Thereby, high-speed processing can be performed with priority given to processing speed.
  • the heating medium 105 may be set lower than the normal pressure boiling point of the solvent S to give priority to purity. In this case, by setting the temperature close to the boiling point of the solvent S and lower than the boiling point of the solvent S, the treatment can be performed as soon as possible while maintaining the purity.
  • the temperature of the heating medium 105 is adjusted within a temperature range in which the solvent S contained in the dirty liquid L is not decomposed.
  • the heaters 104a provided at the three locations are independently controlled so that the temperature of the heating medium 105 does not vary. In particular, until the temperature of the heating medium 105 is stabilized, heat convection occurs in the heating medium 105 in the heating medium storage unit 101 and the temperature is likely to vary. For this reason, the medium 105 quickly rises to a target temperature and is kept at a constant temperature by, for example, turning on and heating from the heater 104a at the bottom of the heating medium reservoir 101.
  • the heating upper limit temperature of the heating medium 105 is set to 70 ° C.
  • heating of the heating medium 105 is started from the heater 104a at the bottom of the heating medium storage unit 101, and heating is performed until the temperature of the heating medium 105 reaches 70 ° C. while adjusting the three heaters 104a. To do.
  • the heating of the heating medium 105 by the heater 104a is stopped.
  • the heater 104a resumes heating so that the temperature of the heating medium 105 is kept constant.
  • the solvent S contained in the heated sewage L is promoted to evaporate from the liquid surface of the sewage L.
  • the filth L can maintain a fixed temperature and can prevent decomposition
  • the filth L heated by the rotation of the rotary brush 103 is lifted to a space above the sewage treatment tank 102, and the surface area of the liquid surface can be increased so that the solvent S is easily evaporated. .
  • the solvent S contained in the sewage liquid L is evaporated and evaporated in the vicinity of the recovery path 111 in the upper part of the sewage treatment tank 102 by lifting the sewage L in the space above the sewage treatment tank 102. Further, even if the sewage L stored in the sewage treatment tank 102 decreases, the sewage L is lifted to the upper space by the rotating brush 103, so that it can always evaporate in the vicinity of the recovery path 111.
  • the inside of the recovered liquid tank 115 is cooled by the cooling coil 116, and further, the pressure is lowered by condensing and liquefying the vapor G of the solvent S. Therefore, both the temperature and the pressure are lowered with respect to the inside of the waste liquid treatment tank 102.
  • the vapor G of the solvent S filled in the sewage treatment tank 102 due to the pressure and temperature difference generated in the sewage treatment tank 102 and the recovery liquid tank 115 is supplied to the recovery liquid tank 115 through the recovery path 111. Thereby, it is not necessary to forcibly supply the vapor G of the solvent S to the recovery liquid tank 115 with a blower or a pump.
  • the inside of the recovered liquid tank 115 is cooled to a temperature suitable for condensing and liquefying the vapor G of the solvent S into the liquid solvent S by the cooling coil 116.
  • the vapor G of the solvent S supplied to the recovery liquid tank 115 is condensed and liquefied by the cooling action of the cooling coil 116 itself, or indirectly condensed and liquefied on the inner wall of the recovery liquid tank 115 cooled by the cooling coil 116.
  • the condensed solvent S is stored by dropping or flowing down to the bottom of the recovery liquid tank 115.
  • the liquid solvent S thus obtained can be reused for the cleaning treatment.
  • the rotating brush 103 that rotates on the substantially horizontal rotating shaft in this way, a large amount of the sewage L is attached to the surface of the rotating brush 103 in a thin film state in the upper space of the sewage treatment tank 102. Can be lifted. Thereby, the solvent S contained in the raised sewage L can be evaporated in the vicinity of the recovery path 111. In this way, the evaporation of the solvent S can be promoted by making the dirty liquid L into a thin film. Since the rotating brush 103 lifts the sewage L from the bottom of the sewage treatment tank 102, the rotary brush 103 is hardly affected even if the amount of the sewage L stored in the sewage treatment tank 102 decreases, and the specific gravity of the gas is heavy. Even with the solvent S, efficient solvent recovery that is easily supplied to the recovery liquid tank 115 through the recovery path 111 can be realized.
  • the motor 113 does not need to directly connect to the rotating brush 103 through the heating medium storage portion 101 and the sewage treatment tank 102, and the rotating brush 103 having an orthogonal rotating shaft is provided. Can be rotated.
  • the solvent recovery apparatus 100 can maintain its separation and recovery capability by making the rotary brush 103 a size suitable for the sewage treatment tank 102.
  • the rotation of the substantially vertical axis as in the prior art reduces the portion of the sewage L that is lifted from the liquid surface to the upper portion of the sewage treatment tank 102, but only about a half of the liquid level by the rotation of the substantially horizontal axis.
  • the sewage can be lifted from the water and can be efficiently evaporated.
  • the rotating body of the present invention corresponds to the rotating brush 103 of the embodiment
  • the rotating shaft corresponds to the rotating shaft portion 103b
  • the heating unit corresponds to the heating unit 104 and the heater 104a
  • the steam cooling unit corresponds to the refrigerator 107 and the cooling coil 116
  • the rotational drive unit corresponds to the motor 113, the belt 114, and the gear unit 106
  • the present invention can be applied to an apparatus for distilling and recovering a reusable solvent from waste liquid or waste liquid.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

Disclosed is a solvent recovery device (100) provided with a dirty liquid treatment tank (102) for storing dirty liquid (L) into which oil and a solvent (S) that are used for washing treatment are mixed, a heating medium storage unit (101) for storing a heating medium (105) for conducting heat into the dirty liquid treatment tank (102), a heating heater (104a) for heating the heating medium (105), a recovery path (111) for recovering vapor (G) of the solvent (S) from the dirty liquid treatment tank (102), a recovered liquid tank (115) for converting the vapor (G) of the recovered solvent (S) into condensate liquid and storing the liquid, and a cooling coil (116) for cooling the vapor (G) of the solvent (S) to a temperature at which the vapor (G) of the solvent (S) supplied to the recovered liquid tank (115) is converted into the condensate liquid, said solvent recovery device (100) being characterized by being provided with a rotating brush (103) which is rotated by an approximately horizontal rotating shaft part (103b) to thereby bury at least the lower part thereof in the dirty liquid (L) within the dirty liquid treatment tank (102) and lift the dirty liquid (L) to an upper space by the rotation, and a motor (113), a belt (114), and a gear part (106) which rotationally drive the rotating brush (103).

Description

溶剤回収装置および溶剤回収方法Solvent recovery device and solvent recovery method
　この発明は、例えば半導体や電子機器等の被洗浄物を洗浄処理するときに使用された汚液や廃液から溶剤を分離回収するような溶剤回収装置に関する。 The present invention relates to a solvent recovery apparatus that separates and recovers a solvent from a sewage or a waste liquid used when cleaning an object to be cleaned such as a semiconductor or an electronic device.
　半導体や電子機器のような精密機器あるいは切削可能された加工物は、油分やダストが製品の品質に影響を与えることがあり製造工程において溶剤を使用して洗浄処理が行われている。 ¡Precision equipment such as semiconductors and electronic equipment or workpieces that can be cut may be affected by oil or dust, and the cleaning process is performed using a solvent in the manufacturing process.
　洗浄処理で洗浄に使用された汚液には、油分やダスト以外に回収すれば再使用可能な溶剤が含まれている。そこで、コスト削減やリサイクルの観点から、汚液から溶剤を再使用できるよう分離回収する溶剤回収装置が利用されている。 The sewage used for cleaning in the cleaning process contains a solvent that can be reused if recovered in addition to oil and dust. Therefore, from the viewpoint of cost reduction and recycling, a solvent recovery device that separates and recovers the solvent from the sewed liquid is used.
　その装置のひとつとして、洗浄処理に使用された汚液を加熱して汚液に含まれる溶剤を蒸発気化させて、回収液槽で溶剤の蒸気を冷却し溶剤を凝縮液化して溶剤を分離回収する装置がある。このとき、加熱された溶剤の蒸発気化を促進させて効率的に回収するために、様々工夫がなされた溶剤回収装置も提供されている。 As one of the devices, the waste liquid used in the cleaning process is heated to evaporate the solvent contained in the waste liquid, the solvent vapor is cooled in the recovery liquid tank, and the solvent is condensed and liquefied to separate and recover the solvent. There is a device to do. At this time, there are also provided solvent recovery apparatuses in which various ideas are made in order to promote the evaporation and evaporation of the heated solvent and efficiently recover it.
　例えば、汚液処理槽に貯溜された汚液を液面に露出するスクリューの螺旋羽根に連続して乗り上げさせ、薄膜状に展開した汚液を溶剤の沸点に近く該沸点よりも低い温度の熱で連続的に加熱することにより、洗浄処理に使用された汚液中に含まれる溶剤を分離回収することができる溶剤回収装置が提案されている（特許文献１参照）。 For example, the waste liquid stored in the waste liquid treatment tank is continuously run on a spiral blade of a screw that is exposed to the liquid surface, and the waste liquid developed in a thin film is heated to a temperature close to the boiling point of the solvent and lower than the boiling point. A solvent recovery device has been proposed that can separate and recover the solvent contained in the sewage used in the cleaning process by continuous heating (see Patent Document 1).
　しかし、特許文献１の技術では、螺旋羽根に乗り上げた薄膜状の汚液は、汚液自身と螺旋羽根に畜熱された熱で蒸発気化するが、汚液処理槽上部と汚液処理槽に貯留された汚液の液面との距離が離れていると、汚液処理槽上部に到達するまでに溶剤が蒸発気化する。そのため、気化した溶剤の比重が空気より重いと、溶剤の蒸気は、汚液処理槽上部まで上昇することが難しくなり、回収液槽に溶剤の蒸気を供給することができなくなる。このため、汚液処理槽を大型化するなどすると汚液処理槽内の汚液の減少とともに効率的な分離回収が行えなくなるといった問題点がある。 However, in the technique of Patent Document 1, the thin film-like sewage that rides on the spiral blade evaporates with the heat of the sewage itself and the spiral blade, but the sewage treatment tank upper part and the sewage treatment tank If the distance from the liquid level of the stored waste liquid is long, the solvent evaporates before reaching the upper part of the waste liquid treatment tank. Therefore, when the specific gravity of the evaporated solvent is heavier than air, it becomes difficult for the solvent vapor to rise to the upper part of the sewage treatment tank, and the solvent vapor cannot be supplied to the recovery liquid tank. For this reason, there is a problem that if the waste liquid treatment tank is enlarged, the waste liquid in the waste liquid treatment tank is reduced and efficient separation and recovery cannot be performed.
特許第４１５７８０４号公報Japanese Patent No. 4157804
　本発明は、上述の問題に鑑み、効率的に溶剤を分離回収することができる溶剤回収装置とその溶剤回収方法を提供することを目的とする。 In view of the above-described problems, an object of the present invention is to provide a solvent recovery apparatus and a solvent recovery method that can efficiently separate and recover a solvent.
　この発明は、洗浄処理に使用された油分と溶剤とが混合した汚液を貯留する汚液処理槽と、前記汚液処理槽の外面に沿って形成され前記汚液処理槽内に熱を伝導する加熱媒体を貯留する加熱媒体貯留部と、前記加熱媒体を加熱する加熱部と、前記汚液処理槽から前記溶剤の蒸気を回収する回収路と、回収した溶剤の蒸気を凝縮液化して貯留する回収液槽と、前記回収液槽に供給された前記溶剤の蒸気が凝縮液化する温度に該溶剤の蒸気を冷却する蒸気冷却部とを備えた溶剤回収装置であって、略水平の回転軸で回転して少なくとも下部が前記汚液処理槽内の汚液内に埋没して該汚液を回転により上方の空間に持ち上げる回転体と、該回転体を回転駆動する回転駆動部とを備えた溶剤回収装置であることを特徴とする。 The present invention includes a sewage treatment tank for storing sewage mixed with an oil and a solvent used for cleaning treatment, and a heat treatment conducted in the sewage treatment tank formed along the outer surface of the sewage treatment tank. A heating medium storage unit for storing the heating medium to be heated, a heating unit for heating the heating medium, a recovery path for recovering the solvent vapor from the waste liquid treatment tank, and condensing and storing the recovered solvent vapor A solvent recovery apparatus comprising a recovery liquid tank and a steam cooling unit that cools the solvent vapor to a temperature at which the solvent vapor supplied to the recovery liquid tank condenses and liquefies. And a rotating body that at least the lower part is buried in the waste liquid in the waste liquid treatment tank and lifts the waste liquid to an upper space by rotation, and a rotation drive unit that rotationally drives the rotary body. It is a solvent recovery device.
　前記溶剤は、例えばジクロロメタンやトリクロロエチレン、パークロロエチレン、ＨＣＦＣ（１４１ｂ又は２５５）などの塩素系溶剤、あるいはＨＦＣやＨＦＥなどの不活性有機系溶剤等で構成される。 The solvent is composed of, for example, a chlorinated solvent such as dichloromethane, trichlorethylene, perchlorethylene, HCFC (141b or 255), or an inert organic solvent such as HFC or HFE.
　前記加熱媒体は、沸点が溶剤の沸点よりも高く、蓄熱性および熱伝導性の良いオイルあるいは混合液、水等の流体とすることができる。 The heating medium has a boiling point higher than that of the solvent, and can be a fluid such as oil or mixed liquid, water, etc. having good heat storage and thermal conductivity.
　この発明により、汚液は、回転体で汚液処理槽内の上方の空間に持ち上げられることで溶剤が蒸発気化しやすいよう表面積を増やすことができる。また、汚液処理槽内の上方の空間に持ち上げられた汚液に混合する溶剤は、汚液処理槽上部の近傍で蒸発気化することができるため、気体の比重が重い溶剤でも回収路に供給されやすく効率的に分離回収することができる。 According to this invention, the surface area of the sewage can be increased so that the solvent is easily evaporated by being lifted by the rotating body into the space above the sewage treatment tank. In addition, the solvent mixed with the sewage lifted in the space above the sewage treatment tank can be evaporated and evaporated in the vicinity of the upper part of the sewage treatment tank, so even a solvent with high gas specific gravity is supplied to the recovery path. It can be easily separated and recovered efficiently.
　また、略水平の回転軸で回転することにより、汚液処理槽に貯留された汚液は、その量が減少しても回転体により汚液処理槽内の上方の空間に持ち上げられることができる。 Further, by rotating with a substantially horizontal rotating shaft, the sewage stored in the sewage treatment tank can be lifted to the upper space in the sewage treatment tank by the rotating body even if the amount thereof decreases. .
　この発明の態様として、前記回転体は、回転軸の円周面上に前記回転軸の径方向に向かって線状材が複数本固定されたブラシ部を備えることができる。 As an aspect of the present invention, the rotating body may include a brush portion in which a plurality of linear members are fixed on the circumferential surface of the rotating shaft in the radial direction of the rotating shaft.
　これにより、前記回転体は、汚液の表面張力が低くても汚液を汚液処理槽内の上方の空間に持ち上げることができる。 Thereby, even if the surface tension of the sewage is low, the rotating body can lift the sewage into the upper space in the sewage treatment tank.
　また、この発明の態様として、前記ブラシ部は、前記複数本の線状材が前記回転軸に螺旋状に配置することができる。 Also, as an aspect of the present invention, the brush portion may be arranged such that the plurality of linear materials are spirally arranged on the rotation shaft.
　これにより、線状材は、回転中の回転軸の長手方向に隙間なく配置されていることとなり、汚液をまんべんなく汚液処理槽の上方空間に持ち上げることができる。 Thus, the linear material is arranged without a gap in the longitudinal direction of the rotating rotating shaft, and the filth can be evenly lifted to the upper space of the sewage treatment tank.
　また、この発明の態様として、前記線状材は、波打ちながら前記径方向に伸びる波打ち形状に形成することができる。 Further, as an aspect of the present invention, the linear material can be formed in a corrugated shape extending in the radial direction while corrugating.
　これにより、前記線状材は、表面積を増やすことができ、より多くの汚液を汚液処理槽内の上方の空間に持ち上げることができる。 Thereby, the linear material can increase the surface area, and more sewage can be lifted to the upper space in the sewage treatment tank.
　また、この発明は、汚液処理槽で洗浄処理に使用された油分と溶剤とが混合した汚液を貯留し、前記汚液処理槽の外面に沿って形成された加熱媒体貯留部に貯留された前記汚液処理槽内に熱を伝導する加熱媒体を、加熱部で加熱し、回収路を通じて前記汚液処理槽から前記溶剤の蒸気を回収液槽に回収し、前記回収液槽に回収された溶剤の蒸気を、蒸気冷却部で前記溶剤の蒸気が凝縮液化する温度に冷却して溶剤を分離回収する溶剤回収方法であって、略水平の回転軸で回転する回転体の少なくとも下部を前記汚液処理槽内の汚液内に埋没させておき、回転駆動部により前記回転体を回転させて前記汚液を上方の空間に持ち上げて前記溶剤の蒸発気化を促進する溶剤回収方法であることを特徴とする。 Further, the present invention stores the sewage in which the oil and the solvent used for the cleaning process in the sewage treatment tank are mixed, and is stored in the heating medium storage part formed along the outer surface of the sewage treatment tank. The heating medium that conducts heat into the waste liquid treatment tank is heated by a heating unit, and the vapor of the solvent is recovered from the waste liquid treatment tank to the recovery liquid tank through a recovery path, and is recovered in the recovery liquid tank. A solvent recovery method for separating and recovering the solvent by cooling the solvent vapor to a temperature at which the solvent vapor is condensed and liquefied in a vapor cooling section, wherein at least the lower part of the rotating body rotating on a substantially horizontal rotating shaft is It is a solvent recovery method that is buried in the waste liquid in the waste liquid treatment tank, rotates the rotating body by a rotation drive unit, lifts the waste liquid to an upper space, and promotes evaporation and evaporation of the solvent. It is characterized by.
　この発明により、汚液に混合する溶剤は、汚液処理槽の上部で蒸発気化することができ、気化した溶剤の比重が重くても効率的に溶剤を分離回収することができる。 According to the present invention, the solvent mixed in the sewage can be evaporated and evaporated at the upper part of the sewage treatment tank, and the solvent can be efficiently separated and recovered even if the specific gravity of the evaporated solvent is heavy.
　本発明により、効率的に溶剤を分離回収することができる溶剤回収装置とその溶剤回収方法を提供することができる。 According to the present invention, it is possible to provide a solvent recovery apparatus and a solvent recovery method that can efficiently separate and recover a solvent.
溶剤回収装置の外観を示す正面図（一部断面図）。The front view which shows the external appearance of a solvent collection | recovery apparatus (partial sectional drawing). 溶剤回収装置の外観を示す右側面図（一部断面図）。The right view (partial cross section figure) which shows the external appearance of a solvent collection | recovery apparatus. 回転ブラシの外観を示す正面図。The front view which shows the external appearance of a rotating brush. 回転ブラシの外観を示す右側面図。The right view which shows the external appearance of a rotating brush. 図３のＡ－Ａ部分を図４のＢ－Ｂ矢視で示した断面図。FIG. 5 is a cross-sectional view taken along the line BB in FIG. 溶剤回収装置の構成を示す構成図。The block diagram which shows the structure of a solvent collection | recovery apparatus.
１００・・・溶剤回収装置
１０１・・・加熱媒体貯留部
１０２・・・汚液処理槽
１０３・・・回転ブラシ
１０３ａ・・・ブラシ部
１０３ｂ・・・回転軸部
１０３ｃ・・・線状材
１０４・・・加熱部
１０４ａ・・・加熱ヒーター
１０５・・・加熱媒体
１０６・・・ギヤ部
１０６ａ・・・駆動ギヤ
１０６ｂ・・・受動ギヤ
１０７・・・冷凍機
１１１・・・回収路
１１３・・・モーター
１１４・・・ベルト
１１５・・・回収液槽
１１６・・・冷却コイル
Ｌ・・・汚液
Ｓ・・・溶剤
Ｇ・・・蒸気 DESCRIPTION OF SYMBOLS 100 ... Solvent recovery apparatus 101 ... Heating medium storage part 102 ... Waste liquid processing tank 103 ... Rotary brush 103a ... Brush part 103b ... Rotary shaft part 103c ... Linear material 104 ... Heater 104a ... Heater 105 ... Heating medium 106 ... Gear part 106a ... Drive gear 106b ... Passive gear 107 ... Refrigerator 111 ... Recovery path 113 ... -Motor 114 ... Belt 115 ... Recovery liquid tank 116 ... Cooling coil L ... Waste liquid S ... Solvent G ... Steam
　この発明の一実施形態を以下図面と共に説明する。　 An embodiment of the present invention will be described below with reference to the drawings. *
　図１は、溶剤回収装置１００の外観を示す正面図（一部断面図）であり、図２は、溶剤回収装置１００の外観を示す右側面図（一部断面図）であり、図３は、回転ブラシ１０３の外観を示す正面図であり、図４は、回転ブラシ１０３の外観を示す右側面図であり、図５は、図３のＡ－Ａ部分を図４のＢ－Ｂ矢視で示した断面図である。 1 is a front view (partially sectional view) showing an appearance of the solvent recovery device 100, FIG. 2 is a right side view (partially sectional view) showing the appearance of the solvent recovery device 100, and FIG. 4 is a front view showing the outer appearance of the rotating brush 103, FIG. 4 is a right side view showing the outer appearance of the rotating brush 103, and FIG. 5 is a cross-sectional view taken along the line BB in FIG. It is sectional drawing shown by.
　図１に示すように、溶剤回収装置１００は、加熱媒体貯留部１０１と、汚液処理槽１０２と、回転ブラシ１０３と、加熱部１０４と、加熱ヒーター１０４ａと、加熱媒体１０５と、ギヤ部１０６と、冷凍機１０７と、冷凍機１０７の下面に設けた移動用キャスター１０８と、汚液投入口１０９と、給油口１１０と、回収路１１１と、モーター１１３と、ベルト１１４とで構成される。 As shown in FIG. 1, the solvent recovery apparatus 100 includes a heating medium storage unit 101, a sewage treatment tank 102, a rotating brush 103, a heating unit 104, a heater 104a, a heating medium 105, and a gear unit 106. The refrigerating machine 107, the moving caster 108 provided on the lower surface of the refrigerating machine 107, the sewage inlet 109, the oil filler 110, the recovery path 111, the motor 113, and the belt 114.
　加熱媒体貯留部１０１は、略ボックス状に形成され冷凍機１０７の上面に固定されて設置されている。また、汚液処理槽１０２は、加熱媒体貯留部１０１よりひとまわり小さい略ボックス状に形成され、前面および背面、左右両側面、底面が加熱媒体貯留部１０１の各対向面と離間している。これにより加熱媒体貯留部１０１と汚液処理槽１０２の間に加熱媒体１０５を充填できるようにしている。この汚液処理槽１０２内は、常圧雰囲気になっており、加圧等の処理は行わないように構成されている。 The heating medium storage unit 101 is formed in a substantially box shape and fixed on the upper surface of the refrigerator 107. Further, the sewage treatment tank 102 is formed in a substantially box shape that is slightly smaller than the heating medium storage unit 101, and the front surface, the back surface, the left and right side surfaces, and the bottom surface are separated from the opposing surfaces of the heating medium storage unit 101. Thus, the heating medium 105 can be filled between the heating medium storage unit 101 and the sewage treatment tank 102. The inside of the sewage treatment tank 102 is in a normal pressure atmosphere, and is configured not to perform processing such as pressurization.
　回収路１１１は、加熱媒体貯留部１０１に対して回転ブラシ１０３の上端より少し高い位置で、回転ブラシ１０３の軸方向略中央に設けられている。これにより、汚液Ｌが直接回収路１１１に入ることなく、かつ溶剤Ｓの蒸気Ｇを効率よく回収路１１１から後述する回収液槽１１５へ送り出せる。 The collection path 111 is provided at a position slightly higher than the upper end of the rotary brush 103 with respect to the heating medium storage unit 101 and at the approximate center in the axial direction of the rotary brush 103. Thereby, the vapor | steam G of the solvent S can be efficiently sent out to the collection | recovery liquid tank 115 mentioned later from the collection path 111, without the dirty liquid L entering the collection path 111 directly.
　加熱ヒーター１０４ａは、加熱媒体貯留部１０１を貫通して加熱部１０４に接続されている。この加熱部１０４と加熱ヒーター１０４ａは、加熱ヒーター１０４ａが加熱媒体貯留部１０１と汚液処理槽１０２とで形成された前面、背面、底面の各離間スペースに収まるように加熱媒体貯留部１０１左側面の３箇所に設けられている（図２参照）。 The heater 104 a is connected to the heating unit 104 through the heating medium storage unit 101. The heating unit 104 and the heating heater 104a are arranged on the left side of the heating medium storage unit 101 so that the heating heater 104a can be accommodated in the front, back, and bottom spaces formed by the heating medium storage unit 101 and the sewage treatment tank 102. (See FIG. 2).
　加熱媒体貯留部１０１内には、内部を全て満たす量の加熱媒体１０５がすきまなく充填されている。 The heating medium storage unit 101 is filled with an amount of heating medium 105 that fills the entire interior.
　汚液投入口１０９は、加熱媒体貯留部１０１左側面の中ほどの高さに接続パイプ１０９ａを介して接続されている。この接続パイプ１０９ａの途中には、汚液投入口１０９に貯留された汚液Ｌを汚液処理槽１０２内へ送る開閉バルブ１０９ｂが接続されている。 The dirty liquid inlet 109 is connected to the middle height of the left side of the heating medium reservoir 101 via a connection pipe 109a. In the middle of the connection pipe 109a, an open / close valve 109b for sending the sewage L stored in the sewage inlet 109 into the sewage treatment tank 102 is connected.
　給油口１１０は、加熱媒体貯留部１０１の上面左端に接続パイプ１１０ａで接続されている。この給油口１１０は、加熱媒体１０５を適宜補充、給油するためのものである。 The oil filler port 110 is connected to the left end of the upper surface of the heating medium storage unit 101 by a connection pipe 110a. The oil supply port 110 is for replenishing and refueling the heating medium 105 as appropriate.
　モーター１１３は、略垂直の回転軸を有し加熱媒体貯留部１０１の上面に固定設置されている。モーター１１３の回転は、ベルト１１４を介してギヤ部１０６に伝達され回転ブラシ１０３を回転させる。 The motor 113 has a substantially vertical rotation axis and is fixedly installed on the upper surface of the heating medium storage unit 101. The rotation of the motor 113 is transmitted to the gear unit 106 via the belt 114 to rotate the rotating brush 103.
　ギヤ部１０６は、ベルト１１４を介してモーター１１３に接続されている略垂直の回転軸を有する駆動ギヤ１０６ａと、駆動ギヤ１０６ａの略垂直の回転軸と直交する略水平の回転軸を有し、回転ブラシ１０３の回転軸部１０３ｂの右端に固定され駆動ギヤ１０６ａと噛合う受動ギヤ１０６ｂとで構成される。モーター１１３の略垂直軸の回転は、ベルト１１４を介して駆動ギヤ１０６ａに伝達され、受動ギヤ１０６ｂにより略水平軸の回転に変換される。このギヤ部１０６は、例えばベベルギヤやウォームギヤなどとすることができる。 The gear unit 106 has a drive gear 106a having a substantially vertical rotation axis connected to the motor 113 via a belt 114, and a substantially horizontal rotation axis orthogonal to the substantially vertical rotation axis of the drive gear 106a. It is comprised by the passive gear 106b fixed to the right end of the rotating shaft part 103b of the rotating brush 103, and meshing with the drive gear 106a. The rotation of the substantially vertical axis of the motor 113 is transmitted to the drive gear 106a via the belt 114, and is converted into the rotation of the substantially horizontal axis by the passive gear 106b. The gear portion 106 can be, for example, a bevel gear or a worm gear.
　回転ブラシ１０３は、ブラシ部１０３ａと回転軸部１０３ｂとで構成される。回転ブラシ１０３は、ブラシ部１０３ａが汚液処理槽１０２の内壁に接触せず、かつ汚液処理槽１０２に貯留された汚液Ｌの量が減少してもブラシ部１０３ａの下端が汚液Ｌに埋没する程度の直径に形成されている。 The rotating brush 103 includes a brush portion 103a and a rotating shaft portion 103b. In the rotating brush 103, even if the brush portion 103a does not contact the inner wall of the sewage treatment tank 102, and the amount of the sewage L stored in the sewage treatment tank 102 decreases, the lower end of the brush portion 103a has the sewage L It is formed in a diameter that can be buried in.
　回転軸部１０３ｂは、汚液処理槽１０２内の中程の高さに回転軸中心が略水平となるよう取付けられている。さらに、回転軸部１０３ｂの右端には受動ギヤ１０６ｂが固定されている。 The rotating shaft 103b is attached to the middle height in the sewage treatment tank 102 so that the center of the rotating shaft is substantially horizontal. Further, a passive gear 106b is fixed to the right end of the rotating shaft portion 103b.
　また、図３、図４に示すようにブラシ部１０３ａは、回転軸部１０３ｂに螺旋状に巻き付けて回転軸部１０３ｂと相対移動がないように溶接などで固定されている。図５に示すように、ブラシ部１０３ａは、溶剤Ｓが蒸発気化しやすいよう加熱された汚液Ｌの熱を蓄熱して、より多くの汚液Ｌを持ち上げることができるよう波付け加工されたステンレス製の線状材１０３ｃを有するチャンネルブラシなどとすると好ましい。 Also, as shown in FIGS. 3 and 4, the brush portion 103a is wound around the rotating shaft portion 103b in a spiral manner and fixed by welding or the like so as not to move relative to the rotating shaft portion 103b. As shown in FIG. 5, the brush portion 103 a is corrugated so that the heat of the sewage L heated so that the solvent S is easily evaporated can be stored, and more sewage L can be lifted. A channel brush having a stainless steel linear material 103c is preferable.
　また、図２に示すように、冷凍機１０７の上面で加熱媒体貯留部１０１の背面には、回収液槽１１５が固定設置されている。また、汚液処理槽１０２内と回収液槽１１５内とは回収路１１１で接続されている。 Further, as shown in FIG. 2, a recovery liquid tank 115 is fixedly installed on the upper surface of the refrigerator 107 and on the rear surface of the heating medium storage unit 101. Further, the inside of the waste liquid treatment tank 102 and the inside of the recovery liquid tank 115 are connected by a recovery path 111.
　冷却コイル１１６は、回収液槽１１５内に設置され、冷凍機１０７に接続されている。 The cooling coil 116 is installed in the recovered liquid tank 115 and connected to the refrigerator 107.
　回収路１１１は、冷却コイル１１６よりも少し高い位置で回収液槽１１５内に突出するように接続されている。 The recovery path 111 is connected to protrude into the recovery liquid tank 115 at a position slightly higher than the cooling coil 116.
　次に溶剤回収装置１００における溶剤Ｓの分離回収処理を、図６の溶剤回収装置１００の構成を示す構成図を用いて説明する。 Next, the separation and recovery process of the solvent S in the solvent recovery apparatus 100 will be described with reference to the configuration diagram showing the configuration of the solvent recovery apparatus 100 in FIG.
　図６に示すように、溶剤Ｓが混合した汚液Ｌは、汚液投入口１０９から投入、あるいは汚液処理槽１０２に直接投入して少なくとも回転ブラシ１０３の下部が埋没する程度に汚液処理槽１０２に満たされる。 As shown in FIG. 6, the sewage L mixed with the solvent S is put into the sewage inlet 109 or directly into the sewage treatment tank 102 so that at least the lower part of the rotary brush 103 is buried. The tank 102 is filled.
　加熱ヒーター１０４ａにより加熱された加熱媒体１０５の熱は、汚液処理槽１０２を介して汚液Ｌへ伝導される。このとき、汚液Ｌの温度は、加熱媒体１０５の温度により調整される。また、加熱媒体１０５は、溶剤回収装置１００の処理目的に応じて適宜の温度に加熱ヒーター１０４ａにより加熱される。 The heat of the heating medium 105 heated by the heater 104 a is conducted to the sewage L through the sewage treatment tank 102. At this time, the temperature of the dirty liquid L is adjusted by the temperature of the heating medium 105. Further, the heating medium 105 is heated by the heater 104 a to an appropriate temperature according to the processing purpose of the solvent recovery apparatus 100.
　例えば、加熱媒体１０５は、その温度が溶剤Ｓの常圧沸点温度より１０℃程度高い温度を保つよう加熱ヒーター１０４ａにより加熱されている。これにより、処理スピードを優先して高速処理を行える。 For example, the heating medium 105 is heated by the heater 104a so that the temperature of the heating medium 105 is about 10 ° C. higher than the normal-pressure boiling point temperature of the solvent S. Thereby, high-speed processing can be performed with priority given to processing speed.
　また、加熱媒体１０５は、溶剤Ｓの常圧沸点より低く設定し、純度優先としてもよい。この場合、溶剤Ｓの沸点に近く溶剤Ｓの沸点よりも低い温度とすることで、純度を維持したままなるべく早く処理することができる。この加熱媒体１０５の温度は、汚液Ｌに含まれる溶剤Ｓが分解しない温度の範囲内で調整される。 Also, the heating medium 105 may be set lower than the normal pressure boiling point of the solvent S to give priority to purity. In this case, by setting the temperature close to the boiling point of the solvent S and lower than the boiling point of the solvent S, the treatment can be performed as soon as possible while maintaining the purity. The temperature of the heating medium 105 is adjusted within a temperature range in which the solvent S contained in the dirty liquid L is not decomposed.
　また、３箇所に設けた加熱ヒーター１０４ａは、加熱媒体１０５の温度にムラが生じないよう独立して制御されている。特に加熱媒体１０５の温度が安定するまでは、加熱媒体貯留部１０１内の加熱媒体１０５に熱対流が発生し温度がバラつきやすい。そのため、加熱媒体貯留部１０１の底部の加熱ヒーター１０４ａからオンにして加熱するなどして、媒体１０５が素早く目的の温度に上昇し、かつ一定温度を保つようにしている。 Further, the heaters 104a provided at the three locations are independently controlled so that the temperature of the heating medium 105 does not vary. In particular, until the temperature of the heating medium 105 is stabilized, heat convection occurs in the heating medium 105 in the heating medium storage unit 101 and the temperature is likely to vary. For this reason, the medium 105 quickly rises to a target temperature and is kept at a constant temperature by, for example, turning on and heating from the heater 104a at the bottom of the heating medium reservoir 101.
　例えば、溶剤Ｓとして常圧沸点６１℃のＨＦＥを用い、処理スピードを優先する場合、加熱媒体１０５の加熱上限温度を７０℃と設定する。次に加熱媒体貯留部１０１の底部の加熱ヒーター１０４ａから加熱媒体１０５の加熱を開始し、３箇所の加熱ヒーター１０４ａをそれぞれ調節しながら、加熱媒体１０５の温度が一様に７０℃となるまで加熱する。加熱媒体１０５の温度が７０℃になると、加熱ヒーター１０４ａによる加熱媒体１０５の加熱を停止する。時間経過により加熱媒体１０５の温度が７０℃以下になると、加熱ヒーター１０４ａは加熱を再開して加熱媒体１０５の温度が一定に保たれるようにしている。 For example, when HFE having a normal pressure boiling point of 61 ° C. is used as the solvent S and the processing speed is given priority, the heating upper limit temperature of the heating medium 105 is set to 70 ° C. Next, heating of the heating medium 105 is started from the heater 104a at the bottom of the heating medium storage unit 101, and heating is performed until the temperature of the heating medium 105 reaches 70 ° C. while adjusting the three heaters 104a. To do. When the temperature of the heating medium 105 reaches 70 ° C., the heating of the heating medium 105 by the heater 104a is stopped. When the temperature of the heating medium 105 becomes 70 ° C. or less with the passage of time, the heater 104a resumes heating so that the temperature of the heating medium 105 is kept constant.
　これにより、加熱された汚液Ｌに含まれる溶剤Ｓは、汚液Ｌの液面からの蒸発気化を促進される。また、汚液Ｌは、溶剤Ｓの濃度が変化しても一定温度を維持することができ、汚液Ｌの温度上昇による溶剤Ｓの分解などを防止することができる。 Thereby, the solvent S contained in the heated sewage L is promoted to evaporate from the liquid surface of the sewage L. Moreover, even if the density | concentration of the solvent S changes, the filth L can maintain a fixed temperature and can prevent decomposition | disassembly of the solvent S by the temperature rise of the filth L, etc.
　ここで、回転ブラシ１０３が回転することにより加熱された汚液Ｌは、汚液処理槽１０２の上方の空間へ持ち上げられ、溶剤Ｓが蒸発気化しやすいように液面の表面積を増やすことができる。 Here, the filth L heated by the rotation of the rotary brush 103 is lifted to a space above the sewage treatment tank 102, and the surface area of the liquid surface can be increased so that the solvent S is easily evaporated. .
　また、汚液処理槽１０２の上方空間に汚液Ｌを持ち上げることで汚液Ｌに含まれる溶剤Ｓは、汚液処理槽１０２の上部にある回収路１１１近傍で蒸発気化することとなる。また、汚液処理槽１０２に貯留された汚液Ｌが減少しても回転ブラシ１０３により上方空間へ持ち上げられるので、常に回収路１１１近傍で蒸発気化することができる。 In addition, the solvent S contained in the sewage liquid L is evaporated and evaporated in the vicinity of the recovery path 111 in the upper part of the sewage treatment tank 102 by lifting the sewage L in the space above the sewage treatment tank 102. Further, even if the sewage L stored in the sewage treatment tank 102 decreases, the sewage L is lifted to the upper space by the rotating brush 103, so that it can always evaporate in the vicinity of the recovery path 111.
　回収液槽１１５内は、冷却コイル１１６で冷却され、さらに溶剤Ｓの蒸気Ｇの凝縮液化で圧力も低くなるため、汚液処理槽１０２内に対して温度、圧力ともに低くなる。 The inside of the recovered liquid tank 115 is cooled by the cooling coil 116, and further, the pressure is lowered by condensing and liquefying the vapor G of the solvent S. Therefore, both the temperature and the pressure are lowered with respect to the inside of the waste liquid treatment tank 102.
　従って、汚液処理槽１０２内と回収液槽１１５内とに生じる圧力、温度差により汚液処理槽１０２に充満した溶剤Ｓの蒸気Ｇは、回収路１１１を通じて回収液槽１１５へ供給される。これにより、溶剤Ｓの蒸気Ｇをブロアーやポンプ等で強制的に回収液槽１１５に供給する必要がない。 Therefore, the vapor G of the solvent S filled in the sewage treatment tank 102 due to the pressure and temperature difference generated in the sewage treatment tank 102 and the recovery liquid tank 115 is supplied to the recovery liquid tank 115 through the recovery path 111. Thereby, it is not necessary to forcibly supply the vapor G of the solvent S to the recovery liquid tank 115 with a blower or a pump.
　回収液槽１１５内は、冷却コイル１１６により溶剤Ｓの蒸気Ｇが液状の溶剤Ｓに凝縮液化するのに適した温度に冷却されている。これにより回収液槽１１５へ供給された溶剤Ｓの蒸気Ｇは、冷却コイル１１６自体の冷却作用により凝縮液化するか、あるいは冷却コイル１１６で冷却された回収液槽１１５の内壁で間接的に凝縮液化する。凝縮液化した溶剤Ｓは、回収液槽１１５の底部に滴下あるいは流下して貯留される。こうして得られた液状の溶剤Ｓは、洗浄処理に再利用することができる。 The inside of the recovered liquid tank 115 is cooled to a temperature suitable for condensing and liquefying the vapor G of the solvent S into the liquid solvent S by the cooling coil 116. Thereby, the vapor G of the solvent S supplied to the recovery liquid tank 115 is condensed and liquefied by the cooling action of the cooling coil 116 itself, or indirectly condensed and liquefied on the inner wall of the recovery liquid tank 115 cooled by the cooling coil 116. To do. The condensed solvent S is stored by dropping or flowing down to the bottom of the recovery liquid tank 115. The liquid solvent S thus obtained can be reused for the cleaning treatment.
　このように略水平の回転軸で回転する回転ブラシ１０３を備えたことにより、多量の汚液Ｌを回転ブラシ１０３の表面に薄膜状に付着させた状態で、汚液処理槽１０２の上方空間に持ち上げることができる。これにより、持ち上げられた汚液Ｌに含まれる溶剤Ｓは、回収路１１１近傍で蒸発気化することができる。このように、汚液Ｌを薄膜状にすることで、溶剤Ｓの蒸発気化を促進することができる。回転ブラシ１０３は、汚液処理槽１０２の底から汚液Ｌを持ち上げる為、汚液処理槽１０２に貯留された汚液Ｌの量が減少しても影響を受け難く、かつ気体の比重が重い溶剤Ｓであっても回収路１１１を通じて回収液槽１１５に供給されやすい効率的な溶剤回収を実現することができる。 By providing the rotating brush 103 that rotates on the substantially horizontal rotating shaft in this way, a large amount of the sewage L is attached to the surface of the rotating brush 103 in a thin film state in the upper space of the sewage treatment tank 102. Can be lifted. Thereby, the solvent S contained in the raised sewage L can be evaporated in the vicinity of the recovery path 111. In this way, the evaporation of the solvent S can be promoted by making the dirty liquid L into a thin film. Since the rotating brush 103 lifts the sewage L from the bottom of the sewage treatment tank 102, the rotary brush 103 is hardly affected even if the amount of the sewage L stored in the sewage treatment tank 102 decreases, and the specific gravity of the gas is heavy. Even with the solvent S, efficient solvent recovery that is easily supplied to the recovery liquid tank 115 through the recovery path 111 can be realized.
　また、波付け加工し表面積を増やした線状材１０３ｃを使用することにより、汚液Ｌの表面張力が低くてもより多くの汚液Ｌをまんべんなく薄膜状に付着させて汚液処理槽１０２内の上方の空間へ持ち上げることができる。 In addition, by using the linear material 103c having a surface area increased by corrugation, even if the surface tension of the sewage L is low, more sewage L is adhered evenly in the form of a thin film, and the inside of the sewage treatment tank 102 Can be lifted up to the space above.
　また、ギヤ部１０６を設けたことによりモーター１１３は、加熱媒体貯留部１０１および汚液処理槽１０２を貫通して直接回転ブラシ１０３に接続する必要なく、かつ直交する回転軸を有する回転ブラシ１０３を回転させることができる。 Further, by providing the gear portion 106, the motor 113 does not need to directly connect to the rotating brush 103 through the heating medium storage portion 101 and the sewage treatment tank 102, and the rotating brush 103 having an orthogonal rotating shaft is provided. Can be rotated.
　さらに、汚液処理槽１０２を大型化しても回転ブラシ１０３を汚液処理槽１０２に適した大きさにすることで、溶剤回収装置１００は、その分離回収能力を維持することができる。 Furthermore, even if the sewage treatment tank 102 is enlarged, the solvent recovery apparatus 100 can maintain its separation and recovery capability by making the rotary brush 103 a size suitable for the sewage treatment tank 102.
　また、従来のように略垂直軸の回転では、汚液Ｌを液面から汚液処理槽１０２の上方へ持ち上げる部位が一部のみと少なくなるが、略水平軸の回転により液面の略半分から汚液を持ち上げることができ、効率的よく蒸発気化することができる。 In addition, the rotation of the substantially vertical axis as in the prior art reduces the portion of the sewage L that is lifted from the liquid surface to the upper portion of the sewage treatment tank 102, but only about a half of the liquid level by the rotation of the substantially horizontal axis. The sewage can be lifted from the water and can be efficiently evaporated.
　この発明の構成と、上述の実施形態との対応において、
この発明の回転体は、実施形態の回転ブラシ１０３に対応し、
以下同様に、
回転軸は、回転軸部１０３ｂに対応し、
加熱部は、加熱部１０４、加熱ヒーター１０４ａに対応し、
蒸気冷却部は、冷凍機１０７、冷却コイル１１６に対応し、
回転駆動部は、モーター１１３、ベルト１１４、ギヤ部１０６に対応するが、
この発明は、上述の実施形態の構成のみに限定されるものではなく、多くの実施の形態を得ることができる。 In correspondence between the configuration of the present invention and the above-described embodiment,
The rotating body of the present invention corresponds to the rotating brush 103 of the embodiment,
Similarly,
The rotating shaft corresponds to the rotating shaft portion 103b,
The heating unit corresponds to the heating unit 104 and the heater 104a,
The steam cooling unit corresponds to the refrigerator 107 and the cooling coil 116,
The rotational drive unit corresponds to the motor 113, the belt 114, and the gear unit 106,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.
　この発明は、汚液あるいは廃液から再利用可能な溶剤を蒸留して分離回収する装置に適用することができる。 The present invention can be applied to an apparatus for distilling and recovering a reusable solvent from waste liquid or waste liquid.

Claims (5)

  1. 　洗浄処理に使用された油分と溶剤とが混合した汚液を貯留する汚液処理槽と、
    前記汚液処理槽の外面に沿って形成され前記汚液処理槽内に熱を伝導する加熱媒体を貯留する加熱媒体貯留部と、
    前記加熱媒体を加熱する加熱部と、
    前記汚液処理槽から前記溶剤の蒸気を回収する回収路と、
    回収した溶剤の蒸気を凝縮液化して貯留する回収液槽と、
    前記回収液槽に供給された前記溶剤の蒸気が凝縮液化する温度に該溶剤の蒸気を冷却する蒸気冷却部とを備えた溶剤回収装置であって、
    略水平の回転軸で回転して少なくとも下部が前記汚液処理槽内の汚液内に埋没して該汚液を回転により上方の空間に持ち上げる回転体と、
    該回転体を回転駆動する回転駆動部とを備えた
    溶剤回収装置。     A wastewater treatment tank for storing wastewater mixed with the oil and solvent used in the cleaning treatment;
    A heating medium reservoir that stores a heating medium that is formed along the outer surface of the waste liquid treatment tank and conducts heat in the waste liquid treatment tank;
    A heating unit for heating the heating medium;
    A recovery path for recovering the vapor of the solvent from the waste liquid treatment tank;
    A recovered liquid tank for condensing and storing the recovered solvent vapor;
    A solvent recovery device comprising: a vapor cooling section that cools the solvent vapor to a temperature at which the solvent vapor supplied to the recovery liquid tank is condensed and liquefied;
    A rotating body that rotates on a substantially horizontal rotating shaft and at least a lower part is buried in the sewage in the sewage treatment tank and lifts the sewage into an upper space by rotation;
    A solvent recovery apparatus comprising a rotation driving unit that rotationally drives the rotating body.
  2. 　前記回転体は、
    回転軸の円周面上に前記回転軸の径方向に向かって線状材が複数本固定されたブラシ部を備えた
    請求項１に記載の溶剤回収装置。     The rotating body is
    The solvent recovery apparatus according to claim 1, further comprising: a brush portion in which a plurality of linear members are fixed in a radial direction of the rotation shaft on a circumferential surface of the rotation shaft.
  3. 　前記ブラシ部は、
    前記複数本の線状材が前記回転軸に螺旋状に配置された
    請求項２に記載の溶剤回収装置。     The brush part is
    The solvent recovery apparatus according to claim 2, wherein the plurality of linear materials are spirally arranged on the rotation shaft.
  4. 前記線状材は、
    波打ちながら前記径方向に伸びる波打ち形状に形成された
    請求項２または請求項３に記載の溶剤回収装置。     The linear material is
    The solvent recovery apparatus according to claim 2 or 3, wherein the solvent recovery device is formed in a wavy shape extending in the radial direction while wavy.
  5. 　汚液処理槽で洗浄処理に使用された油分と溶剤とが混合した汚液を貯留し、
    前記汚液処理槽の外面に沿って形成された加熱媒体貯留部に貯留された前記汚液処理槽内に熱を伝導する加熱媒体を、
    加熱部で加熱し、
    回収路を通じて前記汚液処理槽から前記溶剤の蒸気を回収液槽に回収し、
    前記回収液槽に回収された溶剤の蒸気を、蒸気冷却部で前記溶剤の蒸気が凝縮液化する温度に冷却して溶剤を分離回収する溶剤回収方法であって、
    略水平の回転軸で回転する回転体の少なくとも下部を前記汚液処理槽内の汚液内に埋没させておき、回転駆動部により前記回転体を回転させて前記汚液を上方の空間に持ち上げて前記溶剤の蒸発気化を促進する
    溶剤回収方法。     Stores the sewage mixed with the oil and solvent used for the cleaning process in the sewage treatment tank,
    A heating medium that conducts heat into the sewage treatment tank stored in a heating medium storage unit formed along the outer surface of the sewage treatment tank,
    Heated in the heating section,
    The solvent vapor is recovered from the sewage treatment tank through the recovery path to the recovery liquid tank,
    A solvent recovery method for separating and recovering a solvent by cooling the solvent vapor recovered in the recovery liquid tank to a temperature at which the vapor of the solvent is condensed and liquefied in a vapor cooling unit,
    At least the lower part of the rotating body that rotates on a substantially horizontal rotating shaft is buried in the waste liquid in the waste liquid treatment tank, and the rotary body is rotated by a rotation drive unit to lift the waste liquid to an upper space. And a solvent recovery method for promoting evaporation of the solvent.
PCT/JP2010/060858 2010-06-25 2010-06-25 Solvent recovery device and solvent recovery method WO2011161818A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2010/060858 WO2011161818A1 (en) 2010-06-25 2010-06-25 Solvent recovery device and solvent recovery method
JP2012521244A JP5621099B2 (en) 2010-06-25 2010-06-25 Solvent recovery device and solvent recovery method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/060858 WO2011161818A1 (en) 2010-06-25 2010-06-25 Solvent recovery device and solvent recovery method

Publications (1)

Publication Number Publication Date
WO2011161818A1 true WO2011161818A1 (en) 2011-12-29

Family

ID=45371030

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2010/060858 WO2011161818A1 (en) 2010-06-25 2010-06-25 Solvent recovery device and solvent recovery method

Country Status (2)

Country Link
JP (1) JP5621099B2 (en)
WO (1) WO2011161818A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014038032A1 (en) * 2012-09-06 2014-03-13 タカギ冷機株式会社 Waste liquid treatment device and production method for waste liquid treatment device
CN113663346A (en) * 2021-09-14 2021-11-19 经纬精细化工(南通)有限公司 Ethanol extraction waste liquid ethanol recovery unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049901U (en) * 1983-09-14 1985-04-08 日立化成工業株式会社 Waste liquid solvent evaporation equipment
JP2000158000A (en) * 1998-11-30 2000-06-13 Kansai Paint Co Ltd Disposal device for waste

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985606A (en) * 1974-08-02 1976-10-12 Artisan Industries Inc. Low-pressure deentrainment evaporator
FR2788590B1 (en) * 1999-01-14 2001-06-08 Sirven HEAT EXCHANGER, ESPECIALLY FOR MANURE PREHEATING
JP4157804B2 (en) * 2003-06-16 2008-10-01 光治郎 大川 Solvent recovery device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049901U (en) * 1983-09-14 1985-04-08 日立化成工業株式会社 Waste liquid solvent evaporation equipment
JP2000158000A (en) * 1998-11-30 2000-06-13 Kansai Paint Co Ltd Disposal device for waste

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014038032A1 (en) * 2012-09-06 2014-03-13 タカギ冷機株式会社 Waste liquid treatment device and production method for waste liquid treatment device
CN113663346A (en) * 2021-09-14 2021-11-19 经纬精细化工(南通)有限公司 Ethanol extraction waste liquid ethanol recovery unit

Also Published As

Publication number Publication date
JP5621099B2 (en) 2014-11-05
JPWO2011161818A1 (en) 2013-08-19

Similar Documents

Publication Publication Date Title
JP6273307B2 (en) Distillation equipment
US7749360B2 (en) Vapor based liquid purification system and process
JP2016536135A (en) Process and apparatus for treating sludge
JP6397300B2 (en) Concentration system
KR101936548B1 (en) Waste liquid regenerating device
WO2017214111A1 (en) Device for the purification of water using a heat pump
WO2011161818A1 (en) Solvent recovery device and solvent recovery method
KR200384132Y1 (en) Reproducing device of waste oil
WO1995006504A1 (en) Method of and apparatus for distillation under reduced pressure
KR102122051B1 (en) A circle thin film vaporization equipment
JP3184911U (en) Waste treatment system
JP6725502B2 (en) Vacuum distillation equipment
JP6099497B2 (en) Vacuum evaporative fresh water generator
US20070107748A1 (en) Vacuum cavitational streaming
JP4157804B2 (en) Solvent recovery device
JP4782154B2 (en) Solvent recovery device and cleaning device
JP2011108399A (en) Induction heat-generating roller device
JP2011005428A (en) Desalination apparatus
WO2012176670A1 (en) Sublimate removal device
JP4745623B2 (en) Extraction processing method
KR200488815Y1 (en) Distilled water producing device equipped Scale remover
JP4431025B2 (en) Organohalogen compound processing apparatus and processing method thereof
US20190168267A1 (en) Device for laminar flow fluid extraction
JP2018038971A (en) Cleaning fluid distillation device, and cleaning device
KR102159822B1 (en) Wastewater treatment apparatus

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10853678

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2012521244

Country of ref document: JP

122 Ep: pct application non-entry in european phase

Ref document number: 10853678

Country of ref document: EP

Kind code of ref document: A1