CN109401829A - A kind of device and technique of hydraulic oil deep dehydration - Google Patents
A kind of device and technique of hydraulic oil deep dehydration Download PDFInfo
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- CN109401829A CN109401829A CN201710708921.7A CN201710708921A CN109401829A CN 109401829 A CN109401829 A CN 109401829A CN 201710708921 A CN201710708921 A CN 201710708921A CN 109401829 A CN109401829 A CN 109401829A
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- 239000010720 hydraulic oil Substances 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000018044 dehydration Effects 0.000 title claims abstract description 16
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 66
- 238000012546 transfer Methods 0.000 claims abstract description 37
- 238000001035 drying Methods 0.000 claims abstract description 30
- 239000000945 filler Substances 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 239000003921 oil Substances 0.000 claims description 18
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 13
- 239000012528 membrane Substances 0.000 description 12
- 239000000835 fiber Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229920002239 polyacrylonitrile Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- -1 moisture Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000008206 lipophilic material Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000010070 molecular adhesion Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
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- 230000003075 superhydrophobic effect Effects 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M175/00—Working-up used lubricants to recover useful products ; Cleaning
- C10M175/0008—Working-up used lubricants to recover useful products ; Cleaning with the use of adsorbentia
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Drying Of Gases (AREA)
Abstract
The invention discloses a kind of techniques of hydraulic oil deep dehydration: compressed air is dried to obtain moisture content 0.3mg/L dry air below with air film drier；Dry air is passed through gas-liquid mass transfer packed tower from bottom, passes through packed tower from bottom to top, the reverse contact drying of hydraulic oil entered with packed tower top, packed tower outlet at bottom obtains the hydraulic oil after drying and dehydrating.The present invention also provides the devices for hydraulic oil deep dehydration, including air film drier and gas-liquid mass-transfer filler tower, the air film drier is equipped with compressed air inlet, dry air outlet, gas-liquid mass transfer packed tower is equipped with air intake, air outlet slit, hydraulic oil inlet and hydraulic oil outlet, the air intake of dry air outlet gas-liquid mass transfer packed tower.Drying dehydration process of the invention can prevent hydraulic oil heat damage without heating；Using hydraulic oil is air-dried, gas-liquid contact face is big, and drying efficiency is high.
Description
Technical field
The present invention relates to the devices and technique of a kind of hydraulic oil deep dehydration.
Background technique
Hydraulic oil is exactly the hydraulic medium used using the hydraulic system of liquid pressure energy, and energy is played in hydraulic system
The effects of transmitting, wear-resistant, system lubrication, anti-corrosion, antirust, cooling.
The pollutant of hydraulic oil mainly has solid particle, moisture, air and chloride.In practice with research, arrive hydraulic
The main reason for oily penalty first is that water enters in hydraulic oil, water pollution can cause the deterioration of oil liquid performance, lead to element
Abrasion.
Hydraulic oil dehydration at present mainly has following five kinds of methods:
(1) sedimentation removes water: is removed water using the different densities of liquid.It is mainly used for a large amount of oil liquid into
The preliminary water-oil separating of row, is suitable for various types of hydraulic oil products, but can only free water in oil and water separation, and need quiet
It is long to set the time.
(2) vacuum method removes water: is removed water using the different principle of the saturated vapor pressure of different liquids.Vacuum method can remove
Free water present in oil liquid, dissolution water and emulsified water, obvious processing effect are gone, can satisfy the aviation of my army's active service four generations machine
Hydraulic oil requirement.
(3) centrifugal process removes water: being to make oil liquid make circulatory motion by mechanical energy to generate radial acceleration, due to different material
Acceleration is different, may separate out the different insoluble substance of density in oil liquid, and this method is suitable for the quick collection of a large amount of oil liquid
Middle processing.
(4) coarse separation method: being to make to mix to the difference of a certain porous medium affinity interaction (or wetability) using liquid
The insoluble liquid separation of two kinds be combined.This method is removed water by allowing hydraulic oil to continue to flow through dewatering filter core,
It is suitable for on-line continuous water removal, but certain pipe resistance can be generated when needing big flow oil liquid, is suitble to require not hydraulic flow
Big occasion.
(5) it adsorbs and removes water law: being to utilize molecular adhesion different, the solubility in oil and water separation is removed with insoluble substance
Water.Filter core is usually made using the polymer material of high-hydroscopicity, when oil liquid flows through filter core, high water absorbency polymer can be with
Water acts on forming gelinite, and filter core volume increases with it, thus slowly make filter core pressure difference increase, in use for some time,
It needs to replace filter core in time.
In the various evaporations of the prior art, vacuum hydroextractor needs to heat, is easy to make hydraulic deterioration of oil.And film filters
Machine needs to carry out hydraulic oil accurate pre-processing, and after operation a period of time, film needs to clean repeatedly, increases cost, and film
Absorption efficiency can be gradually reduced.
Summary of the invention
The present invention to solve the above-mentioned problems, provides the system and technique of a kind of hydraulic oil deep dehydration, using air film
Drier+ultrafiltration membrane aeration constitutes hydraulic oil deep dehydration system, and absorption efficiency is high, energy conservation and environmental protection.
The technical solution adopted by the present invention is that:
A kind of technique of hydraulic oil deep dehydration, comprising the following steps:
(1) it is air-dried: compressed air is passed through in air film drier, obtain moisture content 0.3mg/L drying below
Air；
(2) hydraulic oil is dehydrated: the dry air that step (1) obtains being passed through gas-liquid mass transfer packed tower from bottom, from lower
The reverse contact drying of hydraulic oil that is upper to pass through packed tower, entering with packed tower top, packed tower outlet at bottom obtain drying and dehydrating
Hydraulic oil afterwards, air are discharged from packed tower top；
Further, in the step (1), atmospheric air can be compressed to obtain by compressed air by air compressor, can also
Directly come in by the conveying of extraneous compressed air pipe, the pressure of compressed air is 0.3-0.8MPa, and it is dry to be conducive to subsequent air film
The drying effect of dry device.
In the step (1), compressed air is passed through in air film drier, the moisture content in air is trapped, through film
Air humidity can achieve dew point (- 40 DEG C).
In the step (1), flow of the compressed air in air film drier is 1000-3000L/h, preferably 1500-
2000L/h。
The air film drier water-wet behavior excellent using fluoro-containing macromolecule material, the transmission rates ratio of vapor
Contour at least two order of magnitude of nitrogen, oxygen, film dehumidifying technology utilizes this characteristic of vapor, so that humid air is passing through film
When surface, vapor enters per-meate side through film and other gases cannot penetrate, and realizes that vapor is separated with dry air, air
Film drier is common compressed-air drier.
In the step (2), the gas-liquid volume ratio in packed tower is 3-20:1, preferably 5-10:1.
In the step (2), the moisture content of the hydraulic oil after the drying and dehydrating that the present invention obtains is up to 100-180mg/L.
The conventional filler for promoting gas-liquid exchange can be used in the filler of the gas-liquid mass transfer packed tower, as Raschig ring, cascade ring,
Saddle, rectangular saddle ring etc., material can select metal, plastics, ceramics etc..Further, it is preferred to use super hydrophilic hollow-fibre membrane.It is described
Super hydrophilic hollow-fibre membrane is using oleophobics water wetted materials such as polyacrylonitrile, polyether sulfone, polyamide, polyurethane, with immersion precipitation phase
Conversion method is made, and the super-hydrophobic lipophilic material such as surface also available polyethylene alcohol is modified, and this film is hydrophilic and oleophobic, anti-pollution
Dye ability is strong, and the service life is longer, and the production method and method of modifying are all well known.Super hydrophilic hollow-fibre membrane can be straight
It is connected to purchase in the market to obtain, can also voluntarily be prepared according to open source literature, such as " preparation of polyacrylonitrile ultrafiltration film, the super equality in side,
Chemical engineering the 7th phase of volume 39,2011,65-68 ", " influence of the polyacrylonitrile/polyurethane comixing compatibility to film properties are blended,
Wang Haibo etc., membrane science and technology, the 6th phase of volume 35,2015,67-71 " etc..
The length of the more preferable super hydrophilic hollow-fibre membrane is 1~5mm, preferably 2mm.
The volume of packing layer is preferably the 30~40% of packed tower volume in the gas-liquid mass transfer packed tower.
In the step (2), dry air is inversely contacted in packed tower with hydraulic oil, absorbs the moisture content in hydraulic oil,
Improve the utilization rate of dry air.
Further, the method step (2) preferably operates by the following method:
The dry air that step (1) obtains is passed through gas-liquid mass transfer packed tower from bottom, passes through packed tower from bottom to top, with
The reverse contact drying of hydraulic oil that packed tower top enters, hydraulic oil are flowed out from packed tower outlet at bottom, are returned by circulating line
To packed tower top, it is again introduced into packed tower, carries out cyclic drying, circulation is multiple after water content in hydraulic oil is up to standard, the bottom of from
The outlet conduit discharge of portion's hydraulic oil outlet connection, the hydraulic oil after obtaining drying and dehydrating.
For the hydraulic oil of different purposes, water content standard is different, have 100mg/L, 200mg/L, also have 300mg/L
, the moisture content of the hydraulic oil after the drying and dehydrating that the present invention obtains is aqueous according to different hydraulic oil up to 100-180mg/L
Amount standard, when cyclic drying, reach specific criteria.
The present invention also provides the device for hydraulic oil deep dehydration, described device includes that air film drier and gas-liquid pass
Matter packed tower, the air film drier are equipped with compressed air inlet, dry air outlet, and the gas-liquid mass transfer packed tower is equipped with
Air intake, air outlet slit, hydraulic oil inlet and hydraulic oil outlet, the dry air outlet gas of the air film drier
The air intake of liquid mass-transfer filler tower.
Further, the gas-liquid mass transfer packed tower is equipped with bottom air inlet, top air outlet, top hydraulic oil inlet
Enter with the bottom air of bottom hydraulic oil outlet, the dry air outlet gas-liquid mass transfer packed tower of the air film drier
Mouthful；
The dry air that the dry air of the air film drier exports out is empty from the bottom of gas-liquid mass transfer packed tower
Gas entrance enters, and from the bottom to top by packed tower, is discharged from top air outlet, and hydraulic oil is immersed from top hydraulic oil inlet,
It from top to bottom by packed tower, is discharged from bottom hydraulic oil outlet, dry air is inversely contacted with hydraulic oil.
Further, device of the present invention further includes air compressor, i.e., described device is done by air compressor, air film
Dry device and gas-liquid mass-transfer filler tower composition, the air compressor are equipped with air intake and compressed air outlet, and the compression is empty
The compressed air inlet of gas outlet air film drier.
Further, the filler of the gas-liquid mass transfer packed tower selects super hydrophilic hollow-fibre membrane, more preferably described super hydrophilic
The length of hollow-fibre membrane is 1~5mm, preferably 2mm.
Further, circulating line is equipped in device of the present invention, circulating line one end connection bottom hydraulic oil goes out
Mouthful, the other end is connected to top hydraulic oil inlet, and the circulating line is equipped with circulating pump.Bottom hydraulic oil outlet is discharged hydraulic
Oil can from top, hydraulic oil inlet enters packed tower again by circulating line, cyclic drying is carried out, until water content in hydraulic oil
After up to standard, discharged from the outlet conduit of bottom hydraulic oil outlet.
The beneficial effects of the present invention are:
1. drying dehydration process can prevent hydraulic oil heat damage without heating
2. gas-liquid contact face is big using hydraulic oil is air-dried, drying efficiency is high.
It 3. using super hydrophilic hollow-fibre membrane for filler in packed tower, can not only absorb water, but also can be used as filler and increase gas
Liquid mass transfer area.
4. convenient for continuous production, easy to operate.
Detailed description of the invention
Fig. 1 is used for the device figure of hydraulic oil deep dehydration.
In Fig. 1,1 is air compressor；2 be air film drier；3 be gas-liquid mass transfer packed tower；4 be circulating pump；5 be liquid
Pressure oil storage tank；6 be circulating line；7 be outlet conduit
1-1 is the air intake of air compressor；1-2 is the compressed air outlet of air compressor；
2-1 is the compressed air inlet of air film drier；2-2 is that the dry air of air film drier exports；
3-1 is the bottom air inlet of gas-liquid mass transfer packed tower；3-2 is the top air outlet of gas-liquid mass transfer packed tower；
3-3 is the top hydraulic oil inlet of gas-liquid mass transfer packed tower；3-4 is the bottom hydraulic oil outlet of gas-liquid mass transfer packed tower.
Specific embodiment
Below by specific embodiment the technical scheme of the present invention will be further described explanation, but protection model of the invention
It encloses without being limited thereto.
Embodiment 1:
The device of hydraulic oil deep dehydration as shown in Figure 1, described device include air compressor 1, air film drier 2,
Gas-liquid mass transfer packed tower 3, hydraulic oil storage tank 5, circulating pump 4, air compressor 1 are equipped with air intake 1-1 and compressed air outlet
1-2, the air film drier 2 are equipped with compressed air inlet 2-1, and dry air exports 2-2, the gas-liquid mass transfer packed tower 3
It is described equipped with bottom air inlet 3-1, top air outlet 3-2, top hydraulic oil inlet 3-3 and bottom hydraulic oil outlet 3-4
The compressed air inlet 2-1 of compressed air outlet 1-2 connection air film drier 2；The dry air of the air film drier 2
Export the bottom air inlet 3-1 of 2-2 connection gas-liquid mass transfer packed tower 3；
The dry air of the air film drier 2 exports the dry air of 2-2 out from the bottom of gas-liquid mass transfer packed tower 3
Portion air intake 3-1 enters, and from the bottom to top by packed tower, is discharged from top air outlet 3-2, and hydraulic oil is from top hydraulic oil
Entrance 3-3 immerses, and from top to bottom by packed tower, is discharged from bottom hydraulic oil outlet 3-4, dry air inversely connects with hydraulic oil
Touching.
Further, described device is additionally provided with circulating line 6, and one end of the circulating line 6 is connected to bottom hydraulic oil outlet
3-4, the other end are connected to top hydraulic oil inlet 3-3, and in the present embodiment, circulating line 6 is first connected to hydraulic oil storage tank 5, then
It is connected to top hydraulic oil inlet 3-3 again；It can also be without hydraulic oil storage tank 5, directly connection top hydraulic oil inlet 3-3；It is described
Circulating line 6 is equipped with circulating pump 4.The hydraulic oil of bottom hydraulic oil outlet 3-4 discharge can be by circulating line 6, in circulating pump 4
Under the action of from top hydraulic oil inlet 3-3 enter packed tower, carry out cyclic drying, until after water content in hydraulic oil is up to standard, from
The outlet conduit 7 of bottom hydraulic oil outlet 3-4 connection discharges.
Through surveying, atmospheric air moisture content is 23mg/L, certain hydraulic oil moisture content is 5000mg/L, treating capacity 50L/d.
(1) air compresses: atmospheric air is after air compressor compresses, pressure 0.3Mpa, moisture content 19mg/L.
(2) it is air-dried: compressed air is passed through in air film drier, intake velocity 1800L/h, exit gas pressure
Power is not much different with inlet pressure, and the moisture content of outlet air is 0.3mg/L.
(3) hydraulic oil is dehydrated: the dry air that step (2) obtains being passed through gas-liquid mass transfer packed tower from bottom, gas-liquid passes
The filler of matter packed tower selects super hydrophilic hollow-fibre membrane, and length is the particle of 2mm, and packing layer volume is packed tower volume
35%, and the reverse contact drying of hydraulic oil entered from packed tower top, gas-liquid volume ratio 5:1, gas flow rate 15m/s are hydraulic
Oil goes out from packed tower bottom hydraulic oil outlet stream, returns to packed tower top by circulating line, is again introduced into packed tower, is followed
Ring is dry, and cyclic drying is primary, and the moisture content of last outlet hydraulic oil is 178mg/L, less than 200mg/L, reaches with oil standard,
It is discharged from outlet conduit.
Embodiment 2:
Through surveying, atmospheric air moisture content is 23mg/L, certain hydraulic oil moisture content is 8000mg/L, treating capacity 45L/d.
(1) air compresses: atmospheric air is after air compressor compresses, pressure 0.8Mpa, moisture content 8mg/L.
(2) it is air-dried: compressed air is passed through in air film drier, intake velocity 1500L/h, exit gas pressure
Power is not much different with inlet pressure, and the moisture content of outlet air is 0.28mg/L.
(3) hydraulic oil is dehydrated: the dry air that step (2) obtains being passed through gas-liquid mass transfer packed tower from bottom, gas-liquid passes
The filler of matter packed tower selects super hydrophilic hollow-fibre membrane, and length is the particle of 2mm, and packing layer volume is packed tower volume
30%, the reverse contact drying of hydraulic oil entered with top, gas liquid ratio 10:1, gas flow rate 18m/s, hydraulic oil is from packed tower
Bottom hydraulic oil outlet stream goes out, and returns to packed tower top by circulating line, is again introduced into packed tower, carries out cyclic drying, follows
Ring is dry primary, and the moisture content of outlet hydraulic oil is 155mg/L, is less than 200mg/L, reaches with oil standard, from outlet conduit row
Out.
Embodiment 3:
Through surveying, atmospheric air moisture content is 23mg/L, certain hydraulic oil moisture content is 3000mg/L, treating capacity 60L/d.
(1) air compresses: atmospheric air is after air compressor compresses, pressure 0.5Mpa, moisture content 11mg/L.
(2) it is air-dried: compressed air is passed through in air film drier, intake velocity 2000L/h, exit gas pressure
Power is not much different with inlet pressure, and the moisture content of outlet air is 0.3mg/L.
(3) hydraulic oil is dehydrated: the dry air that step (2) obtains being passed through gas-liquid mass transfer packed tower from bottom, gas-liquid passes
The filler of matter packed tower selects super hydrophilic hollow-fibre membrane, and length is the particle of 1mm, and packing layer volume is packed tower volume
40%, the reverse contact drying of hydraulic oil entered with top, gas liquid ratio 8:1, gas flow rate 20m/s, hydraulic oil is from packed tower
Bottom hydraulic oil outlet stream goes out, and returns to packed tower top by circulating line, is again introduced into packed tower, carries out cyclic drying, follows
Ring drying is secondary, and the moisture content of outlet hydraulic oil is 100mg/L, reaches with oil standard, from outlet conduit discharge.
Claims (10)
1. a kind of technique of hydraulic oil deep dehydration, it is characterised in that the technique the following steps are included:
(1) it is air-dried: compressed air is passed through in air film drier, obtain moisture content 0.3mg/L dry air below；
(2) hydraulic oil is dehydrated: the dry air that step (1) obtains being passed through gas-liquid mass transfer packed tower from bottom, is passed through from bottom to top
Packed tower is crossed, the reverse contact drying of hydraulic oil entered with packed tower top, after packed tower outlet at bottom obtains drying and dehydrating
Hydraulic oil.
2. the method as described in claim 1, it is characterised in that in the step (1), the pressure of compressed air is 0.3-
0.8MPa。
3. the method as described in claim 1, it is characterised in that in the step (1), compressed air is in air film drier
Flow be 1000-3000L/h.
4. the method as described in claim 1, it is characterised in that step (2) operates by the following method:
The dry air that step (1) obtains is passed through gas-liquid mass transfer packed tower from bottom, passes through packed tower from bottom to top, with filler
The reverse contact drying of hydraulic oil that tower top enters, hydraulic oil flow out from packed tower outlet at bottom, are returned to and filled out by circulating line
Expect tower top, be again introduced into packed tower, carries out cyclic drying, circulation is multiple after water content in hydraulic oil is up to standard, from bottom liquid
The outlet conduit of pressure oil outlet discharges, the hydraulic oil after obtaining drying and dehydrating.
5. method as described in claim 1 or 4, it is characterised in that in the step (2), the gas-liquid volume ratio in packed tower is
3-20:1.
6. the method as described in claim 1, it is characterised in that the filler of the gas-liquid mass transfer packed tower is selected super hydrophilic hollow
Tunica fibrosa.
7. a kind of device for hydraulic oil deep dehydration, it is characterised in that described device includes that air film drier and gas-liquid pass
Matter packed tower, the air film drier are equipped with compressed air inlet, dry air outlet, and the gas-liquid mass transfer packed tower is equipped with
Air intake, air outlet slit, hydraulic oil inlet and hydraulic oil outlet, the dry air outlet gas of the air film drier
The air intake of liquid mass-transfer filler tower.
8. device as claimed in claim 7, it is characterised in that the gas-liquid mass transfer packed tower is equipped with bottom air inlet, top
Air outlet slit, top hydraulic oil inlet and bottom hydraulic oil outlet, the dry air outlet gas of the air film drier
The bottom air inlet of liquid mass-transfer filler tower；
The dry air that the dry air of the air film drier exports out enters from the bottom air of gas-liquid mass transfer packed tower
Mouth enters, and from the bottom to top by packed tower, is discharged from top air outlet, hydraulic oil is immersed from top hydraulic oil inlet, by upper
And it is lower by packed tower, it is discharged from bottom hydraulic oil outlet, dry air is inversely contacted with hydraulic oil.
9. device as claimed in claim 7 or 8, it is characterised in that described device further includes air compressor, i.e. described device
It is made of air compressor, air film drier and gas-liquid mass-transfer filler tower, the air compressor is equipped with air intake and pressure
Contracting air outlet slit, the compressed air inlet of the compressed air outlet connection air film drier.
10. device as claimed in claim 9, it is characterised in that be equipped with circulating line, the circulating line one in described device
End connection bottom hydraulic oil outlet, the other end are connected to top hydraulic oil inlet, and the circulating line is equipped with circulating pump；Bottom liquid
Pressure oil outlet discharge hydraulic oil can from top, hydraulic oil inlet enters packed tower again by circulating line, it is dry to carry out circulation
It is dry, until being discharged after water content in hydraulic oil is up to standard from the outlet conduit of bottom hydraulic oil outlet.
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| CN201710708921.7A CN109401829A (en) | 2017-08-17 | 2017-08-17 | A kind of device and technique of hydraulic oil deep dehydration |
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| CN201710708921.7A CN109401829A (en) | 2017-08-17 | 2017-08-17 | A kind of device and technique of hydraulic oil deep dehydration |
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