EP3697513A1 - Aufbereitung von gefilterten walzoel und filterhilfsmittel - Google Patents
Aufbereitung von gefilterten walzoel und filterhilfsmittelInfo
- Publication number
- EP3697513A1 EP3697513A1 EP18783500.4A EP18783500A EP3697513A1 EP 3697513 A1 EP3697513 A1 EP 3697513A1 EP 18783500 A EP18783500 A EP 18783500A EP 3697513 A1 EP3697513 A1 EP 3697513A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling oil
- filter
- reactor
- oil
- rolling
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 239000010731 rolling oil Substances 0.000 title claims abstract description 73
- 238000001914 filtration Methods 0.000 title claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 title abstract 5
- 238000000034 method Methods 0.000 claims abstract description 36
- 238000004821 distillation Methods 0.000 claims abstract description 16
- 238000005292 vacuum distillation Methods 0.000 claims abstract description 12
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 239000011261 inert gas Substances 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 claims description 29
- 238000011049 filling Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 4
- 239000003463 adsorbent Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000010842 industrial wastewater Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000010841 municipal wastewater Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims 1
- 239000002923 metal particle Substances 0.000 claims 1
- 239000002689 soil Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 238000013019 agitation Methods 0.000 abstract 1
- 239000012716 precipitator Substances 0.000 abstract 1
- 235000019198 oils Nutrition 0.000 description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 239000012065 filter cake Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 239000007858 starting material Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000002699 waste material Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000005299 abrasion Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 235000011837 pasties Nutrition 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000001291 vacuum drying Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000005068 cooling lubricant Substances 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- -1 ferrous metals Chemical class 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 235000019362 perlite Nutrition 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000344 soap Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 235000019241 carbon black Nutrition 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000010980 cellulose Nutrition 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 238000007700 distillative separation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/10—Vacuum distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/02—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in boilers or stills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
- B01D1/18—Evaporating by spraying to obtain dry solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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
- C10M175/0025—Working-up used lubricants to recover useful products ; Cleaning by thermal processes
- C10M175/0033—Working-up used lubricants to recover useful products ; Cleaning by thermal processes using distillation processes; devices therefor
Definitions
- the invention relates to a process for the recovery of rolling oil and filter aid from used for the filtration of rolling oil filter aid.
- the recovered filter aid can - after optional washing - again be used for cleaning of rolling oil or directly as an adsorbent and precoat.
- the returned oil can be reused in the rolling process.
- rolling oils are complex hydrocarbon mixtures with additives and serve in the rolling process of lubrication, cooling and cleaning. They have a great influence on the profitability of production and the quality of products made by rolling.
- rolling oils are used in cold rolling mills in circulating systems of pure oil tank, feed pumps, oil distribution, collecting trough, dirty oil tank, filtration, cooling and clean oil tank.
- the forming zone or embossing zone is supplied with rolling oil. Contaminants are continuously removed during filtration and heat is removed during cooling.
- the impurities are essentially abrasion and metal soaps.
- the filtration of rolling oils is of particular importance, as their continuity and function have a decisive influence on the productivity of the process and the quality of the product.
- the filtration of the rolling oils takes place, for example, example by the so-called alluvium filtration with horizontal plate pressure filters or backwash.
- filter aids such as perlite, kieselgure, bleaching earth or mixtures thereof are used.
- the rolling abrasion is mechanically stored in the filter cake formed from filter aids and metal soaps are removed by chemically active components.
- larger quantities of rolling oil are also bound there.
- a typical filter cake waste from horizontal plate pressure filters contains about 1% metal abrasion and about 40% rolling oil.
- the filter oil containing rolling oil has hitherto been treated as waste and sent for thermal utilization. This form of disposal is also close, because the rolling oil-containing filter cake has a high calorific value and burns very well. The resulting in the previous combustion of the rolling oil filter cake exhaust gases are also easy to clean. For this reason, the thermal utilization of this waste material was obvious.
- a disadvantage of this constantly practiced procedure is that a large amount of oil or cooling lubricant is discharged by filtration aids and oil and filter aids are finally lost because of the combustion. In addition, fall in total and large amounts of waste because of the used filter aids. The same applies to a filtration or purification of the contaminated oil via backwash filter. This continuous combustion is therefore also associated with high carbon dioxide emissions. As the primary rolling oil sources become less, rolling oil is becoming increasingly valuable and rolling oil prices have increased significantly in recent years.
- the invention is therefore an object of the invention to provide a process for the recovery of oil and filter aid from the agglutinated filter oil with filter oil.
- Products of the process should be a recyclable rolling oil and a recyclable filter aid.
- This object is achieved by a method for evaporation of the oil-containing starting material under vacuum. Consequently, the recovery of rolling oil from filter oil used for filtration of filter oil is achieved by subjecting the used, rolling oil-containing filter aid vacuum distillation (vacuum evaporation) with stirring in a equipped with stirrer and vapor filter reactor, the vacuum currency for separation of rolling oil and filter aid controlled distillation with an inert gas stream, wherein the separated by distillation from the filter aid and aluminum particles rolling oil for use in rolling is recyclable and a powdered recyclable filter aid is obtained.
- vacuum evaporation vacuum evaporation
- the process of the invention can be carried out safely and leads to a significant reduction in the fresh oil requirement of a rolling mill and thus also to reduce the operating costs of industrial mill production.
- the recycling of the deoiled filter aid and the resulting rolling oil protects the natural resources. The feared contamination by cracked products does not occur.
- the inventive method is a vacuum-thermal recovery of filter aid and rolling oil from used rolling oil afflicted filter aid (filter grounds).
- the process of the invention enables the conversion of the used filter aid as a waste into a feed which is suitable for use in further industrial processes. As a result, much less waste accumulates.
- the filter aid freed from the oil can be used as an adsorbent or as a filtration aid, for example in industrial wastewater treatment, or reused in the process according to the invention.
- the inventive method leads to a significantly reduced purchase of new rolling oil in the metal foil and metal strip manufacturing industry and goes hand in hand with a considerable conservation of resources.
- the process according to the invention leads to a significant reduction of carbon dioxide emission in industrial rolling mills because used rolling oil is no longer burned. It is a so-called sustainable process.
- vacuum drying or vacuum distillation allows up to 99% by weight of the rolling oil to be recycled from the filter cake and its quality and direct reuse as rolling oil are permitted.
- the terms Vacuum drying and vacuum distillation have the same meaning for the purposes of describing this invention. It is furthermore surprising that the filter aid freed from the rolling oil is obtained in a recyclable quality and can be returned to the original purpose after an alkaline or mineral-acid washing and subsequent drying.
- Starting material of the distillative separation of the rolling oil from the filter aid is a paste-like and / or puncture-resistant mass containing filter aids, metal abrasion and rolling oil. This mass was separated from the filter fleece material of the filtration device.
- the rolling oil content of the starting material may be in the range of 30% by weight to 70% by weight, 35% by weight to 60% by weight or 35% by weight to 45% by weight, based in each case on the mass of the Starting material, amount.
- the proportion of filter aid in the starting material of the process according to the invention can be from 30% by weight to 70% by weight, from 40% by weight to 65% by weight or from 55 to 65% by weight, based in each case on its mass.
- the starting material of the vacuum distillation may further comprise 0.2% by weight or 0.8% by weight to 5% by weight of metal abrasion, based on its mass.
- this material is to be assessed as scalable after the separation by distillation of the rolling oil. It can thus react spontaneously with atmospheric oxygen, air humidity or other compounds strongly exothermic.
- filter aids In filtration devices for the purification of rolling oil are used as filter aids conventional filter grounds.
- filter aids or filter grounds comprise, for example, perlites, bleaching earths, diatomaceous earth, celluloses, carbon blacks, further inorganic filter aids known to the person skilled in the art and mixtures of these filter aids.
- the rolling oil may contain, in addition to a lubricating oil with, for example, 10 to 50 carbon atoms, lubricating fatty acids, lubricating esters of fatty acids and dicarboxylic acids and lubricating fatty alcohols.
- Lubricating oils are, for example, mineral oils, vegetable oils or synthetically produced oils.
- rolling oils may also contain various additives such as surfactants, corrosion inhibitors, high pressure additives and non-ferrous metal inhibitors.
- the distillation is carried out by charging the reactor with the oil-containing filter aid during filling and also with inert gas during the duration of the distillation during the filling.
- Nitrogen is preferably used as the inert gas.
- other suitable inert gases such as helium, argon, PFC can be used.
- the negative pressure is adjusted with inert gas addition.
- the vacuum to be set in the process according to the invention can be from 0 mbar to 20 mbar, preferably from 10 mbar to 16 mbar and particularly preferably around 14 mbar.
- the vacuum to be set according to the invention is therefore regulated by inert gas.
- the temperature in the reactor and in particular in the bottom of the reactor may be a temperature of 60 ° C to 300 ° C.
- the temperature in the reactor and in particular in the bottom of the reactor is preferably 60 ° C. to 200 ° C. or 60 ° C. to 150 ° C.
- the chosen temperature in the reactor is dependent on the boiling point of the components of the rolling oil. Under the above conditions, the rolling oil is converted to the gaseous state. The rolling oil condenses on a condenser and is collected. Powdery filter aid separated from the rolling oil remains in the reactor and is subsequently removed therefrom.
- a reactor for carrying out the process according to the invention comprises a stirrer suitable for stirring pasty masses.
- a stirrer is required which also detects a pasty mass in the region of the reactor wall and the reactor bottom and keeps the pasty mass in motion in the reactor.
- This stirrer preferably also has a content-cutting or indexing blade design.
- the stirring blades are preferably heatable.
- the stirrer may be in the form of an anchor.
- the stirrer is designed in such a way that stationary dead volumes such as glands and vapor tube are co-heated in the reactor. The dead volume in the reactor should be kept as low as possible his.
- the evaporation of the rolling oil from the filter aid can be done for example in a vacuum stirrer dryer.
- the paste-like starting material can be constantly mixed by anchor or paddle stirrers.
- the distillation reactor is thus designed to heat the paste-like mass evenly and without heat build-up or partial overheating to minimize the formation of cracking products in the distillation.
- the vapor filter should preferably be cleaned by blowing in air or water.
- the system for carrying out the method according to the invention may comprise a charge container, an agitator drive, a wall heating coil and a heated double bottom, a discharge flap for the dried filter aid, a condenser and collecting vessels for the recovered process products of the process according to the invention.
- the reactor has means for applying a vacuum.
- the reactor is connected to or contains a condensation device and can be cooled with a liquid.
- the rolling oil is condensed. Particularly good results are achieved in the presence of a vapor filter, which protects the condensate and the evaporation apparatus from contamination by dusty particles.
- the distillate has a quality which allows its further use as rolling oil without restriction.
- a vacuum two-roll dryer can be used.
- the distillation must be carried out with substantial exclusion of oxygen in order to avoid exothermic, chemical reactions including oxygen during the distillation. Apparatuses which do not fulfill this requirement are not sensitive and therefore unsuitable for carrying out the method according to the invention.
- the de-oiled filter aid with any metal debris present is removed from the bottom of the reactor. It is present as a finely divided powder which, depending on the composition, is reactive with air and water. In order to reduce the reactivity and to improve the quality and the applicability, the powder obtained must be immediately subjected to alkaline washing with an aqueous alkali solution or an acidic scrubbing with an aqueous mineral acid are subjected, whereby a controlled chemical reaction of the reactive particles takes place and thus from the filter earth again a harmless and safe for other applications safely and inexpensively usable raw material.
- a storage tank used filter material containing rolling oil is introduced into the head opening of a reactor with a conveyor.
- the reactor is placed on load cells to determine the degree of filling of the reactor.
- the reactor has a working volume of 5 m 3 .
- the moist product which is the starting material of the process according to the invention, has a bulk density of about 0.5 kg / l.
- a slight nitrogen stream is continuously fed into the reactor via a fine valve.
- the stirrer runs in the reactor at low speed in order to achieve homogenization and setting of the contents in the reactor. If the reactor has a capacity of about 2,500 kg, the filling is stopped.
- the reactor is then closed.
- the vacuum pumps are turned on and a slight stream of nitrogen continues to flow into the reactor. Cooling and heating systems are also employed.
- the reactor is evacuated to an internal pressure of 20 mbar. After the internal pressure has approached 50 mbar, the nitrogen flow can be lowered or closed.
- the speed of the stirrer is increased, whereby the reactor contents are heated. In the course of the distillation, the temperature of the reactor contents increases as well as the head temperature (Brüdentemperatur) in the reactor.
- evaporated in the flow Water evaporated in the flow Water.
- the water is the crystal water of the filter material and water that is present as an impurity in the filter material. Oil is partially entrained in the distillation of the water.
- the condensed flow is collected via a valve circuit in the feed tank.
- the internal temperature of the reactor continues to rise.
- the head temperature in the vapor tube can drop again in the meantime, as long as no component in the reactor has reached its boiling point.
- the rolling oil begins to boil and distill.
- the condensed and recovered oil is directed to a storage tank.
- the distillation is continued to a preset reactor and / or head temperature and then stopped.
- the temperature of the reactor switches to cooling and the negative pressure in the reactor is slowly broken with the opening of the fine valve under nitrogen supply.
- the vacuum pumps drive their power back until the internal pressure of the reactor and the outside pressure match.
- a compensating valve and a small creeping volume from the nitrogen line ensure that no oxygen can be drawn from the outside into the interior of the reactor.
- the entire plant system is cooled to a residue temperature below 50 ° C before it is opened and the oil separated from the filter material at the bottom of the reactor is removed from the reactor.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Filtration Of Liquid (AREA)
- Water Treatment By Sorption (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Lubricants (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP17196872.0A EP3473316A1 (de) | 2017-10-17 | 2017-10-17 | Aufbereitung von gefilterten medien und filterhilfsmittel |
PCT/EP2018/077917 WO2019076762A1 (de) | 2017-10-17 | 2018-10-12 | Aufbereitung von gefilterten walzoel und filterhilfsmittel |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3697513A1 true EP3697513A1 (de) | 2020-08-26 |
Family
ID=60293694
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17196872.0A Withdrawn EP3473316A1 (de) | 2017-10-17 | 2017-10-17 | Aufbereitung von gefilterten medien und filterhilfsmittel |
EP18783500.4A Pending EP3697513A1 (de) | 2017-10-17 | 2018-10-12 | Aufbereitung von gefilterten walzoel und filterhilfsmittel |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17196872.0A Withdrawn EP3473316A1 (de) | 2017-10-17 | 2017-10-17 | Aufbereitung von gefilterten medien und filterhilfsmittel |
Country Status (5)
Country | Link |
---|---|
US (1) | US12076669B2 (de) |
EP (2) | EP3473316A1 (de) |
JP (1) | JP6982764B2 (de) |
CN (1) | CN111225725B (de) |
WO (1) | WO2019076762A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112142245A (zh) * | 2020-09-09 | 2020-12-29 | 山东格瑞水务有限公司 | 一种冷轧油乳化液废水预处理装置 |
CN113087342A (zh) * | 2021-04-12 | 2021-07-09 | 内蒙古联晟新能源材料有限公司 | 一种用于哈兹列特油品过滤油泥的净化回收方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113521864B (zh) * | 2021-06-29 | 2022-12-09 | 山东德利铝业科技有限公司 | 一种铝箔轧制过程中延长轧制油过滤周期的方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2686028A1 (fr) * | 1992-01-14 | 1993-07-16 | Achenbach Buschhuetten Gmbh | Procede et installation d'epuration de gateau de filtre contenant de l'huile et se formant lors de la filtration mecanique d'huile de laminage. |
Family Cites Families (28)
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2018
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- 2018-10-12 WO PCT/EP2018/077917 patent/WO2019076762A1/de unknown
- 2018-10-12 CN CN201880067850.XA patent/CN111225725B/zh active Active
- 2018-10-12 EP EP18783500.4A patent/EP3697513A1/de active Pending
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2020
- 2020-04-17 US US16/851,494 patent/US12076669B2/en active Active
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CN112142245A (zh) * | 2020-09-09 | 2020-12-29 | 山东格瑞水务有限公司 | 一种冷轧油乳化液废水预处理装置 |
CN113087342A (zh) * | 2021-04-12 | 2021-07-09 | 内蒙古联晟新能源材料有限公司 | 一种用于哈兹列特油品过滤油泥的净化回收方法 |
Also Published As
Publication number | Publication date |
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JP2020536730A (ja) | 2020-12-17 |
US20200238195A1 (en) | 2020-07-30 |
WO2019076762A1 (de) | 2019-04-25 |
CN111225725B (zh) | 2022-06-24 |
JP6982764B2 (ja) | 2021-12-17 |
EP3473316A1 (de) | 2019-04-24 |
US12076669B2 (en) | 2024-09-03 |
CN111225725A (zh) | 2020-06-02 |
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