CS228600B1 - A method of recovering hydraulic fluids based on polychlorinated biphenyls and / or chlorocarbates - Google Patents
A method of recovering hydraulic fluids based on polychlorinated biphenyls and / or chlorocarbates Download PDFInfo
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- CS228600B1 CS228600B1 CS453582A CS453582A CS228600B1 CS 228600 B1 CS228600 B1 CS 228600B1 CS 453582 A CS453582 A CS 453582A CS 453582 A CS453582 A CS 453582A CS 228600 B1 CS228600 B1 CS 228600B1
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Abstract
Vynález spadá do odboru regenerácie opotřebovaných mazacích prostriedko.v. Rieši sposob regenerácie hydraulických kvapalín na báze polychlorovaných bifenylov a/alebo chlóralkylbifenylov po filtrácii mechanických -podielov a preroývání .nefiltrovatelných podielov tak, že k filtrátu aa premyje roztokom hydroxidu alkalického kovu a/alebo uhličitanu alkalického kovu, s výhodou pri teplote do 100 °C a ďalej vodným roztokom 20 až 30 %-ného peroxidu vodíka v množstve 0,1 až 3 % hmotnostně na násadu za zvýšenej teploty do 100 °C a po oddělení vodnej vrstvy sa filtrát destiluje alebo sa oipať přidá roztok peroxidu vodíka za tých istých podmienok.The invention falls into the field of regeneration of worn lubricants. It provides a method of regeneration of hydraulic fluids based on polychlorinated biphenyls and/or chloroalkyl biphenyls after filtration of mechanical fractions and screening of non-filterable fractions by washing the filtrate with a solution of alkali metal hydroxide and/or alkali metal carbonate, preferably at a temperature of up to 100 °C and further with an aqueous solution of 20 to 30% hydrogen peroxide in an amount of 0.1 to 3% by weight per batch at an elevated temperature of up to 100 °C and after separation of the aqueous layer, the filtrate is distilled or a hydrogen peroxide solution is added to it under the same conditions.
Description
Vynález spadá do odboru regenerácie opotřebovaných mazacích prostriedkov.The invention is within the field of regeneration of worn lubricants.
Rieši sposob regenerácie hydraulických kvapalín na báze polychlórovaných bifenylov a/alebo chlóralkylbifenylov po filtrácii mechanických podielov a premývání .nefiltrovatelných podielov tak, že k filtrátu aa premyje roztokom hydroxidu alkalického kovu a/alebo uhličitanu alkalického kovu, s výhodou pri teplote do 100 °C a ďalej vodným roztokom 20 až 30 %-ného peroxidu vodíka v množstve 0,1 až 3 % hmotnostně na násadu za zvýšenej teploty do 100 °C a po oddělení viodnej vrstvy sa filtrát destiluje alebo sa opať přidá roztok peroxidu vodíka za tých istých podmienok. 228600 228 3It solves a process for recovering hydraulic fluids based on polychlorinated biphenyls and / or chloroalkylbiphenyls after filtration of the mechanical components and washing of non-filterable portions by washing the filtrate with a solution of alkali metal hydroxide and / or alkali metal carbonate, preferably up to 100 ° C and further with an aqueous solution of 20 to 30% hydrogen peroxide in an amount of 0.1 to 3% by weight per batch at elevated temperature to 100 ° C, and after separation of the aqueous layer, the filtrate is distilled or the hydrogen peroxide solution is added again under the same conditions. 228600 228 3
Vynález sa týká sposobu regenerácie hydraulických kvapalín na báze polychlorovaných bifenylov a/alebo chlóralkylbifenylov.The present invention relates to a process for the recovery of hydraulic fluids based on polychlorinated biphenyls and / or chloroalkylbiphenyls.
Pre meranie kyslíkových kompresorov, používaných v extrémnych podmienkach, sa používajú chlórované bifenyly s obsahom chlóru nad 30 % hmotnostných alebo chlóralkylbifenyly s prídavkom vhodných aditívov, ktoré zlepšujú oxidačnú stálosť, mazacie vlastnosti a upravujú penivosť. Ako aditívy sa používajú organické zlúčeniny, obsahujúce v molekule atomy kyslíka, síry, dusíka, fosforu, zinku a iných prvkov v róznych funkčných skupinách. V príebehu používania hydraulickej kvapaliny sa v nej obsiahnuté aditívy menia, podliehajú rozkladu. Rozkladnými produktami organických látok, obsahujúcimi síru sú merkaptány, sulfidy a iné, prevažne nepríjemne zapáchajúce látky. Iným typom nečistot sú uhlíkaté úsady, okuje, hrdza a podobné, ďalej voda a anorganické nečistoty.For the measurement of oxygen compressors used under extreme conditions, chlorinated biphenyls with a chlorine content above 30% by weight or chloroalkylbiphenyls with the addition of suitable additives that improve oxidation stability, lubricity and foaming properties are used. As additives, organic compounds containing oxygen, sulfur, nitrogen, phosphorus, zinc and other elements in various functional groups are used. When using hydraulic fluid, the additives contained therein are subject to degradation. Decomposition products of sulfur-containing organic substances are mercaptans, sulfides and other, predominantly odorous substances. Another type of impurities are carbon deposits, scales, rust and the like, as well as water and inorganic impurities.
Uvedené nedostatky sú odstránené u sposobu regenerácie hydraulických kvapalín na báze polychlorovaných bifenylov a/aletío chlóralkylbifenylov aditivovaných organickými zlúčeninami obsahujúcimi síru, ktorou je filtrovanie, extrahovanie nefiltrovatefných podielov organickými rozpúšfadlami a závěrečné destilačné rozdelenie s přidáním aditívov podfa vynálezu, ktorého podstatou je, že filtrát sa premyje roztokom hydroxidu alkalického kovu a/alebo uhličitanu alkalického kovu, s výhodou pri teplote do 100 stupňov Celsia, ďalej vodným roztokom 20 00 4 až 30 %-ného peroxidu vodíka v množstve 0,1 až 3 % hmotnostně na násadu, za zvýšenej teploty do 100 °C a po oddělení sa násada destiluje alebo sa opař přidá roztok peroxidu vodíka za tých istých podmienok. Výhodou spósobu podfa vynálezu je, že sa vratné opotřebované hydraulické kvapaliny upravia do původného stavu a odstráni sa u nich nepříjemný zápach, spósobený sírnymi zlúčeninami.The above drawbacks are avoided in the process of recovering polychlorinated biphenyl-based hydraulic fluids and / or of an alcohochloroalkylbiphenyl additivated with sulfur-containing organic compounds, such as filtering, extracting non-filterable fractions with organic solvents, and final distillation separation with the addition of additives according to the invention. with an alkali metal hydroxide and / or alkali metal carbonate solution, preferably at a temperature of up to 100 degrees Celsius, further with an aqueous solution of 20 to 4% by weight hydrogen peroxide at 0.1 to 3% by weight per batch, at an elevated temperature of up to 100% ° C and after separation, the batch is distilled or the hydrogen peroxide solution is added under the same conditions. An advantage of the method according to the invention is that the reversible worn hydraulic fluids are restored to their original state and removed the unpleasant odor caused by the sulfur compounds.
Spósob podfa vynálezu je doložený príkladom prevedenia. Příklad Násada hydraulickej kvapaliny na báze polychlórovaných bifenylov sa filtruje cez keramický filter za použitia tlaku; podiel nepřekročil 2 % hmotnosti. Potom sa podiel zachytený na filtri premyl xylénom. Filtrát hydraulickej kvapaliny sa ďalej neutralizuje roztokom hydroxidu draselného v dvojnásobnej hmotnosti na násadu hydraulickej kvapaliny pri teplote 40 až 45 °C. Po oddělení vodnej vrstvy a jej premytí sa přidá 24 %-ný vodný roztok peroxidu vodíka v množstve 0,2 % hmotnosti na násadu a násada sa zohriala na 100 °C. Destilácia sa uskutočnila návazné v kotli až na hodnotu 100 Pa. Hlavná frakcia, zodpovedajúca destllačnému rozmedziu spravidla medzi 300 až 350 °C za normálneho tlaku, je ďalej spracovaná prídavkom aditívov, ktorými sú epoxidické zlúčeniny.The method of the invention is exemplified. EXAMPLE Polychlorinated biphenyl based hydraulic fluid feed is filtered through a ceramic filter using pressure; the proportion did not exceed 2% by weight. Then the filter-retained portion was washed with xylene. The hydraulic fluid filtrate is further neutralized with a potassium hydroxide solution at twice the weight of the hydraulic fluid at 40 to 45 ° C. After separation of the aqueous layer and washing, a 24% aqueous hydrogen peroxide solution of 0.2% by weight per batch is added and the batch is heated to 100 ° C. The distillation was carried out in a boiler up to 100 Pa. The main fraction, corresponding generally to the distillation range, typically between 300 and 350 ° C under normal pressure, is further processed by the addition of additives which are epoxide compounds.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS453582A CS228600B1 (en) | 1982-06-18 | 1982-06-18 | A method of recovering hydraulic fluids based on polychlorinated biphenyls and / or chlorocarbates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS453582A CS228600B1 (en) | 1982-06-18 | 1982-06-18 | A method of recovering hydraulic fluids based on polychlorinated biphenyls and / or chlorocarbates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CS228600B1 true CS228600B1 (en) | 1984-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS453582A CS228600B1 (en) | 1982-06-18 | 1982-06-18 | A method of recovering hydraulic fluids based on polychlorinated biphenyls and / or chlorocarbates |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS228600B1 (en) |
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1982
- 1982-06-18 CS CS453582A patent/CS228600B1/en unknown
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