CS227939B1 - Regeneration of hydraulic liquids based on polychlorinated biphenyls - Google Patents

Regeneration of hydraulic liquids based on polychlorinated biphenyls Download PDF

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Publication number
CS227939B1
CS227939B1 CS462182A CS462182A CS227939B1 CS 227939 B1 CS227939 B1 CS 227939B1 CS 462182 A CS462182 A CS 462182A CS 462182 A CS462182 A CS 462182A CS 227939 B1 CS227939 B1 CS 227939B1
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CS
Czechoslovakia
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weight
regeneration
polychlorinated biphenyls
liquids based
hydraulic liquids
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CS462182A
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Czech (cs)
Slovak (sk)
Inventor
Karol Ing Csc Fancovic
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Fancovic Karol
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Priority to CS462182A priority Critical patent/CS227939B1/en
Publication of CS227939B1 publication Critical patent/CS227939B1/en

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Description

Polychlorovaná bifenyly s obsahom chlóru viac ako 30 % hmotnostných s prídavkom aditiv zlepšujúeich oxidačnú stálost, mazacie vlastnosti, uprevujúci penivosť sa používajú na maza nie v extrámnych podmienkach. Adltívaml sú zváčša organická zlúčeniny obsahujúce v molekule atomy kyslika, síry, dusíka, fosforu, zinku a iných prvkov. V priebehu používania hydraulic kej kvapaliny sa v nej obsiahnutá aditívy menta, podliehajú rozkladu.Polychlorinated biphenyls with a chlorine content of more than 30% by weight with the addition of additives improving oxidation stability, lubricating properties and foaming properties are used for lubrication not in extreme conditions. Additives are mainly organic compounds containing oxygen, sulfur, nitrogen, phosphorus, zinc and other elements in the molecule. During use of the hydraulic fluid, the menta additives contained therein are subject to decomposition.

Produkty rozkladu obsahujúce síru, vo formě merkaptánov, sulfidov a iných sa vyznačujú aj v nepatrných kpncentráciách nepříjemným zápachom, ktorý je příčinou ich nepoužitelnosti. Okrem toho použitá kvapalina obsahuje rozptýlené čiastočky rfiznych nečistfit ako například uhlíkové úsady, okuje, hrdzu, nezriedka vodu a anorganické nečistoty.·Sulfur-containing decomposition products, in the form of mercaptans, sulphides and others, are also characterized by unpleasant odors, even at slight concentrations, which make them unusable. In addition, the liquid used contains suspended particulate matter such as carbon deposits, scale, rust, rarely water and inorganic impurities.

Uvedené nedostatky sú odstránené spfisobom regenerécie hydraulických kvapaiín na báze polychlorovaných bifenyiov podTa vynálezu, ktorý spočívá vo filtrácii nečistfit, extrakcií nefiltrovateTných podielov organickým rozpúšťadlom a nakoniec závěrečným destilačným rozdělením s adítivováním a ktorého podstatou je, že filtrát sa premyje 20 %-ným hmotnostným roz tokom uhličitanu alkalického kovu v množstve 10 až 20 % hmotnosti na hmotnost filtrátu za teploty 20 až 100 °C.These drawbacks are overcome by the recovery of the polychlorinated biphenyl-based hydraulic fluid according to the invention, which consists in filtering off the impurities, extracting the non-filterable portions with an organic solvent and finally a final distillation separation with additivation. % alkali metal in an amount of 10 to 20% by weight of the filtrate at a temperature of 20 to 100 ° C.

fialej sa vodná vrstva oddělí a k filtrátu sa přidá kyselina peroxyoctová v množstve 0,1 až 3 % hmotnostně na hmotnost násady hydraulickéj kvapaliny za miešania až do a za zohriatie na teplotu do 100 °C.The aqueous layer is separated from the violet and peroxyacetic acid is added to the filtrate in an amount of 0.1 to 3% by weight based on the weight of the hydraulic fluid feed, with stirring up to and heating to 100 ° C.

Kyselina peroctová a peroxid vodíka prevedú sírne zlúčeniny na menej zapáchajúce sulf? oxidy, sulfony a sulfokyseliny. Teplota vzniknutých zlúčenín je mimo teploty varu chlorovaných bifenylov. Hlavně frakcie, zodpovedajúce destilačnému rozmedziu 300 až 350 °C za normálného tlaku sa spracujú za přídavku aditívov.Peracetic acid and hydrogen peroxide convert sulfur compounds to less odorous sulphides? oxides, sulfones and sulfoacids. The temperature of the resulting compounds is outside the boiling point of chlorinated biphenyls. In particular, fractions corresponding to a distillation range of 300 to 350 ° C under normal pressure are treated with the addition of additives.

Výhodou spfisobu podTa vynálezu je možnost spracovania vrchných opotřebovaných hydraulických kvapalín.An advantage of the method according to the invention is the possibility of processing the top worn hydraulic fluids.

Predmet vynálezu je ilustrovaný na příklade prevedenia.The invention is illustrated by way of example.

PříkladExample

100 hmotnostných dielov opotřebenaj hydraulickéj kvapaliny na báze polychlorovaných bifenylov - Hydeloru 104, výrobce Chemko Strážske n. p. - čiernej farby s rozptýlenými Siastočkami tuhej fázy, nepříjemného zápachu sa filtruje na keramickom filtri. Zvyšok na filtri sa premyje 10 hmotnostnými dielmi xylénu.100 parts by weight of hydraulic fluid based on polychlorinated biphenyls - Hydelor 104, manufactured by Chemko Strážske n. p. - black with scattered solid phase particles, unpleasant odor is filtered on a ceramic filter. The filter residue is washed with 10 parts by weight of xylene.

Xylén sa odpaří a zvyšok sa pridé k tlakovému podlelu. NefiltrovateTný podiel činil 15 hmotnostných dielov čierneho-préšku. Spojené filtráty sa premyjú 10 hmotnostnými dielmi vodného roztoku uhličitanu sodného o koncentrácii 20 % hmotnostných za miešania a stúpnutie teploty na 8· °C.The xylene was evaporated and the residue was added to the pressure pad. The non-filterable portion was 15 parts by weight of black powder. The combined filtrates were washed with 10 parts by weight of an aqueous solution of sodium carbonate at a concentration of 20% by weight with stirring and the temperature was raised to 8 ° C.

Vodné vrstva sa oddělí, pridé sa 1 hmotnostný diel kyseliny peroxyoctovej a za miešania sa zmes zohreje na 100 °C. Destiláciou sa získá 91 hmotnostných dielov polychlorovaných bifenylov v rozmedzí varu 120 až 185 °C pri 13 Pa.The aqueous layer was separated, 1 part by weight of peracetic acid was added and the mixture was heated to 100 ° C with stirring. Distillation yielded 91 parts by weight of polychlorinated biphenyls boiling in the range of 120-185 ° C at 13 Pa.

Claims (2)

SpOsob regenerécie hydraulických kvapalín na báze polychlorovaných bifenylov spočlvajúci vo filtrování načistet, extrakci! nefiltrovateTných podielov organických rozpúšťadlos s des-, tilačným rozdělením vyznačený tým, že sa filtrát premyje roztokom uhličitanu alkalického kovu o koncentrácii 20 % hmot. v množstve 10 až 20 % hmotnosti na hmotnbsť filtrátu, za teploty, 20 až 100 °C, Sálej sa vodná vrstva oddělí a k filtrátu sa přidá kyselina peroxyoctová v množstve 0,1 až 3 % hmotnostně na hmotnost násady filtrátu za miešania a zohriatia na teplo tu do 100 °C.Method of regeneration of hydraulic fluids based on polychlorinated biphenyls by filtering, purify, extract! non-filterable fractions of organic solvents having a distillation distillation, characterized in that the filtrate is washed with an alkali metal carbonate solution having a concentration of 20% by weight. in an amount of 10 to 20% by weight based on the weight of the filtrate, at a temperature of 20 to 100 ° C. to 100 ° C.
CS462182A 1982-06-22 1982-06-22 Regeneration of hydraulic liquids based on polychlorinated biphenyls CS227939B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS462182A CS227939B1 (en) 1982-06-22 1982-06-22 Regeneration of hydraulic liquids based on polychlorinated biphenyls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS462182A CS227939B1 (en) 1982-06-22 1982-06-22 Regeneration of hydraulic liquids based on polychlorinated biphenyls

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CS227939B1 true CS227939B1 (en) 1984-05-14

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