baber/WOPTO huggingface dataset:
Patent HU-177120-B (HU)
Title: Process for producing 4,5-dichloro-6-oxo-7-methyl-7-phenyl-1,2,7,8-tetrahydro-6h-indeno-square bracket-5,4-b-square bracket closed-furane-2-carboxylic acid
Inventor: CRAGOE EDWARD J
IPC: C07C49/84
Filed: 1976-02-13
Abstract: 1497382 Indenofuran and indenothiophene carboxylic acids and derivatives thereof MERCK & CO Inc 19 Feb 1976 [24 Feb 1975] 06654/76 Heading C2C [Also in Division A5] Novel compounds of the Formula I in which the dotted line respresents an optional bond, A is oxygen or sulphur, R is carbocyclic aryl or thienyl, each optionally substituted with one or more C 1-6  alkyl or halogen, R<SP>1</SP> is C 1-6  alkyl, X<SP>1</SP> is C 1-6  alkyl or halogen and X<SP>2</SP> is hydrogen, C 1-6  alkyl or halogen, or a non-toxic pharmaceologically acceptable salt, ester or amide thereof, may be prepared (i) where A is oxygen and the 1,2-bond is saturated, by oxidizing a compound of the Formula IIh (ii) where the 1,2-bond is unsaturated, by alkylating a compound VII to introduce the radical R<SP>1</SP>, optionally followed by saturation of the 1,2-double bond. 4,5 - Dichloro - 6 - oxo - 7 - methyl - 7 - phenyl- 1,2,7,8 - tetrahydro - 6H - indeno[5,4 - b]furan- 2-carboxylic acid (both α- and #-isomers and the racemate) are prepared methylating 2- phenyl - 5 - methoxy - 6,7 - dichloro - 1 - indanone or phenylating 2-methyl-5-methoxy- 6,7 - dichloro - 1 - indanone to form 2 - methyl- 2 - phenyl - 5 - methoxy - 6,7 - dichloro - 1 - indanone, which with pyridine hydrochloride forms 2 - methyl - 2 - phenyl - 5 - hydroxy - 6,7 - dichloro - 1 - indanone which with allyl bromide and base forms 2 - methyl - 2 - phenyl - 5 - allyloxy - 6,7 - dichloro - 1 - indanone which in a modified Maunich reaction with N,N-diethyl aniline rearranges to 2 - methyl - 2 - phenyl- 4 - allyl - 5 - hydroxy - 6,7 - dichloro - 1 - indanone which with sodium acetate and peracetic acid at 25‹ C. yields the required α-isomer or with m-chloroperbenzoic acid and 4,4<SP>1</SP>-thiobis- 6 - tertiary - butyl - m - cresol at 40‹ C. yields the required #-isomer. The racemate is obtained when the oxidation is effected at 25‹ to 40‹ C. 2 - Methyl - 5 - methoxy - 6,7 - dichloro - 1- indanone is prepared by reacting 2,3-dichloroamisole with isobutyryl chloride in a Friedel- Craft reaction to yield 2<SP>1</SP>,3<SP>1</SP>-dichloro-4<SP>1</SP>-methoxyisobutyrophenone which is brominated to 2- bromo - 2<SP>1</SP>,3<SP>1</SP> - dichloro - 4<SP>1</SP> - methoxyisobutyrophenone, dehydrobrominated to 2 - methylene- 2<SP>1</SP>,3<SP>1</SP> - dichloro - 4<SP>1</SP> - methoxy - propiophenone which is cyclized to the required compound. 2 - Phenyl - 5 - methoxy - 6,7 - dichloro - 1- indanone is prepared by reacting 2,3-dichloroanisole and phenylacetyl chloride in a Friedel Crafts reaction to yield 2<SP>1</SP>,3<SP>1</SP>-dichloro-4<SP>1</SP>-methoxy-2-phenyl-acetophenone which with N,N,N,N- tetramethylmethane diamine and acetic anhydride yields 2<SP>1</SP>,3<SP>1</SP>-dichloro-4<SP>1</SP>-methoxy-2-phenylacrylophenone which is cyclized to the required compound.
Patent IN-159644-B (IN)
Inventor: HARBERT CHARLES ARMON
IPC: C07C211/58
Filed: 1984-01-20
Abstract: Novel cis-isomeric derivatives of 4-phenyl-1,2,3,4-tetrahydro-1-naphthalenamine are useful as antidepressant agents. These novel compounds act to block the synaptosomal uptake of serotonin (5-hydroxy-tryptamine), thereby alleviating serotonin abnormalities at central receptor sites. The preferred embodiment is the enantiomer cis-(1S)-N-methyl-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydro-1-naphthal enamine and its pharmaceutically acceptable acid addition salts.
Patent IT-1260396-B (IT)
Title: Dispositivo magnetico a frizione per l'ancoraggio di protesi dentarie parziali totali o altro
IPC: A61C/
Filed: 1992-12-15
Granted: 1996-04-05
Abstract: IL DISPOSITIVO MAGNETICO A FRIZIONE PER L'ANCORAGGIO DI PROTESI DENTARIE E' COSTITUITO DA UN ASSEMBLAGGIO DI VARI PEZZI: IL MAGNETE CON IL RELATIVO INVOLUCRO E IL FODERO, CHE HA ALLE ESTREMITA' UN COPERCHIO E UN ANELLO , INGLOBA I PRECEDENTI PEZZI ( FIG 7-7 / A ) .IL DISPOSITIVO COSI' COMPOSTO PUO' ESSERE PRIVATO DELL'ANELLO SITO ALL'ESTREMITA' INFERIORE. QUESTA MANOVRA PERMETTE LA RETRAZIONE DELLA PARTE SPORGENTE DELL'INVOLUCRO CONTENENTE IL MAGNETE. E' UN DISPOSITIVO INNOVATIVO PER LE SUE CARATTERISTICHE DI AMMORTIZZAZIONE DELLE FORZE FISIOLOGICHE CHE SI VERIFICANO DURANTE LA MASTICAZIONE, LA DEGLUTIZIONE E LA FONAZIONE.
Patent IT-1249045-B (IT)
Title: Processo per la sintesi allo stato solido di polimeri dell'acido lattico e prodotti cosi ottenuti
Inventor: PEREGO GABRIELE
IPC: C08G63/78
Filed: 1991-02-21
Granted: 1995-02-11
Abstract: Polimeri e copolimeri dell'acido L (+) lattico e D(-)lattico ad alto peso molecolare ed esenti da catalizzatori vengono preparati mediante rigradazione allo stato solido di polimeri a basso peso molecolare.
Patent IT-1248284-B (IT)
Title: Procedimento e dispositivo per il lavaggio di sistemi a tubo flessibile, di aspirazione e a cannula aspirante.
Inventor: BRAETSCH HARTMUT
IPC: B08B9/04
Filed: 1991-03-06
Granted: 1995-01-05
Abstract: L'invenzione riguarda un procedimento per il lavaggio di sistemi a tubo flessibile, di aspirazione e a cannula aspirante, particolarmente per applicazioni odontoiatriche, in cui, per risolvere il problema di un lavaggio affidabile e profondo senza lasciare zone non lavate, con un processo di lavaggio più semplice possibile, uno o più attacchi di aspirazione (2) di uno o più tubi flessibili di aspirazione (1) vengono premuti a tempo breve contro uno o più collegamenti di prelievo (10, 10a), e un tappo o una quantità sufficiente di un liquido di lavaggio vengono aspirati a tempo breve attraverso il sistema, e riguarda un dispositivo relativo a ciò e più semplice possibile, senza sistemi di comando complessi.
Patent IT-1245180-B (IT)
Title: Dispositivo per fissare un elemento parietale sull'intelaiatura di un quadro di comando ad armadio
Inventor: BERNHARDT JUERGEN
IPC: H02B1/30
Filed: 1991-03-08
Granted: 1994-09-13
Abstract: L'invenzione riguarda un dispositivo per fissare un elemento parietale sull'intelaiatura di un quadro di comando ad armadio, le cui ali sono dotate di file di aperture passanti per alloggiare elementi di fissaggio presentanti un blocco con foro filettato per un perno filettato ed una appendice a gancio sagomata a ridosso in un sol pezzo, con una parte di adattamento adattata alle aperture passanti. Si ottiene un montaggio di facile esecuzione, invisibile, per il fatto che sul lato interno dell'elemento parietale lungo i lati di fissaggio è montata rispettivamente una lista angolare, la cui ala sporgente termina con una piegatura di agganciamento e si estende parallelamente al lato interno dell'affacciata ala dell'intelaiatura e inoltre che i blocchi degli elementi di fissaggio sono dotati aggiuntivamente di alloggiamenti per
Patent IT-1247518-B (IT)
Title: System for wet treatment of fabrics and device for its implementation
Inventor: LLONGUERAS EDUARDO CRISTIA
IPC: D06B/
Filed: 1991-04-24
Granted: 1994-12-17
Abstract: This system for wet treatment of fabrics and devices for its implementation consists of the fact that the fabric stretched widthwise, which is unwound from a roller, is taken up by a traction device, penetrating the interior of a cylinder immersed in or containing a treatment both suitable for heating which is provided with inlet and outlet openings for the fabric which slides over its width without tension following zig-zag bends, all this occurring so that said cylinder is subjected to alternating rotary oscillations in intermittent fashion with control of the speed of the fabric and the duration of the intermittent oscillations of the cylinder and also with the possibility of programming said times and speed. This system enjoys the following advantages, among others:  the type of fabric being treated has no weight limit, contraction of this fabric can be compensated and folds are therefore absent, the bath has reduced size requirements and the device has simple operation. <IMAGE>
Patent IT-1251140-B (IT)
Title: Procedimento per l'introduzione diretta e selettiva nelle basi eteroaromatiche del gruppo coor in cui r e' un gruppo alchilico.
Inventor: MINISCI FRANCESCO
IPC: C07D/
Filed: 1991-07-29
Granted: 1995-05-04
Abstract: Procedimento per l'introduzione diretta del gruppo COOR, in cui R è un gruppo alchilico, in basi eteroaromatiche mediante reazione di queste con un emiestere dell'acido ossalico e con un persolfato in presenza di quantità catalitiche di sali di argento a temperatura compresa tra 0 e 100°C.
Patent IT-1256311-B (IT)
Title: Stiratoio,in particolare stiratoio a velocita' variabile per cotone
IPC: D01H13/18
Filed: 1992-11-11
Granted: 1995-11-30
Abstract: In uno stiratoio per filatoio, in particolare uno stiratoio a velocità variabile per cotone, con almeno due coppie di cilindri consecutive, ciascuna delle quali presenta un cilindro azionato con un motore elettrico proprio, è previsto un dispositivo di regolazione elettronico, che regola la velocità di rotazione di almeno uno dei motori elettrici per la compensazione di disuniformità di un nastro di carda da lavorare. Per eseguire uno stiratolo con i mezzi più semplici possibili, e in modo che venga esclusa una rotazione in senso inverso del cilindri in stato di arresto, ai cilindri azionati da uno dei motori elettrici viene associato almeno un giunto unidirezionale e al cilindro o al cilindri azionati dall'altro motore elettrico è associato almeno un altro giunto unidirezionale.
Patent IT-1271747-B (IT)
Title: Fascetta metallica elastica ad elevata resistenza per giunzione di tubi
Inventor: BELLAZZI EMILIO
IPC: F16L33/035
Filed: 1994-03-16
Granted: 1997-06-09
Abstract: Viene descritta una fascetta metallica elastica per la giunzione di tubi coassiali caratterizzata da un serraggio facile da realizzare e sicuro.Detta fascetta può essere realizzata con materiali ad elevata resistenza ed è pertanto adatta ad essere utilizzata in giunzioni sottoposte ad elevati sforzi.
Patent IT-1250992-B (IT)
Title: Apparatus for the automatic dispensing of products in the form of liquid, powder or granules, with an electronically controlled gravimetric system
Inventor: SCATIZZI MARIO
IPC: G01D/
Filed: 1991-04-08
Granted: 1995-04-27
Abstract: This system makes it possible to dispense, with extreme precision, products in the form of liquid and products in powder or granules to obtain mixtures of same according to predetermined modalities or quantities with an electronically controlled gravimetric system. This system is the only one of its kind which controls the dispensing of both liquid and powder or granulated products with ease and extreme precision. <IMAGE>
Patent IT-1258403-B (IT)
Title: Device comprising an axle which raises a load through its rotation, and a motor/reduction gear for rotation of the axle
Inventor: VALERIO RUGGIERO
IPC: F16G/
Filed: 1992-06-05
Granted: 1996-02-26
Abstract: The device comprises a bracket 2 which supports the axle 1 through an axle box 4 within which oscillating bearings 21 are located. Oscillating bearings 21 enable axle 1 to bend as it rotates. Pinion 8 of motor/reduction gear 7 transmits motion to gearwheel 6 which is keyed onto an extension of axle 1, even where there is appreciable flexion of axle 1, as a result of the presence of an arm 10 attached to axle 1 which supports motor/reduction gear 7, arm 10 maintaining the mutual spatial relationship between pinion 8 and gearwheel 6 unchanged. (Figure 5). <IMAGE>
Patent IT-1263241-B (IT)
Title: Procedure and device for measuring temperature within industrial plant and furnaces, in particular for the progress of coking
IPC: F27D/
Filed: 1992-09-16
Granted: 1996-08-05
Abstract: Procedure and device for determining characteristic temperatures within the cells of a coking furnace or in chemically aggressive or hostile environments of similar industrial production plant, comprising introducing a capsule containing a gas which can be detected in combustion products (tracer gas), in particular a radioactive gas, which is released from the capsule when it reaches a predetermined temperature, at a predetermined point in the furnace, or in the coke mixture entering the furnace tunnel. <IMAGE>
Patent IT-1250897-B (IT)
Title: Dispositivo indicatore di autonomia per un veicolo ad accumulatori.
Inventor: VARRONE PIERGIORGIO
IPC: B60L11/18
Filed: 1991-12-24
Granted: 1995-04-21
Abstract: Un dispositivo indicatore di autonomia per un veicolo elettrico ad accumulatori comprendente un'unità di elaborazione collegata ad un'unità di memoria ed a un dispositivo di visualizzazione, in cui il dispositivo indicatore è ulteriormente collegato ad un misuratore dello spazio percorso dal veicolo elettrico e ad un rilevatore della carica presente negli accumulatori, in cui la memoria contiene dati relativi al consumo di carica elettrica del veicolo in funzione dello spazio percorso, in funzione del tipo di percorso ed in funzione di altri parametri operativi, ed in cui l'unità di elaborazione attua un programma di gestione comprendente le funzioni di identificare, in base alle rilevazioni effettuate dal misuratore di spazio percorso e dal rilevatore di carica, il tipo di percorso svolto dal veicolo, di calcolare, in base ai dati contenuti nell'unità di memoria, lo spazio che il veicolo elettrico è in grado ancora di percorrere.
Patent PT-101687-B (PT)
IPC: F01B29/12
Filed: 1995-04-11
Abstract: The invention relates to a system for the rapid generation of superheated steam, produced directly inside the drive cylinder, by injection of pressurized water of 80/85 kg/cm2 and superheated to 300 degree C, comprising a hydraulic circuit which includes the hydropneumatic accumulator 1, the pump which simultaneously injects and regulates the flows of water and fuel 2A-2C, which supplies the heating system consisting of the coil 3 and the burner 10; the water, under these conditions of pressure and temperature, is introduced by the injector 4 inside the cylinder, immediately resulting in the generation of superheated steam and the consequent work time. The invention dispenses with the production of steam in a conventional boiler, making it possible, directly and exclusively in the cylinder, during the drive time, to generate the optimized quantity of water/steam, with fuel economy, and to improve performance through better heat utilization. <IMAGE>
Patent PT-105636-B (PT)
Title: Flip-flop para previsão de erros de performance em sensores de envelhecimento, para aplicação em circuitos integrados digitais síncronos
Inventor: TEIXEIRA JOAO PAULO CACHO
IPC: G01R31/3187
Filed: 2011-04-20
Abstract: A PRESENTE INVENÇÃO REFERE-SE A UM FLIP-FLOP PARA PREVISÃO DE ERROS DE PERFORMANCE EM SENSORES DE ENVELHECIMENTO, PARA APLICAÇÃO EM CIRCUITOS INTEGRADOS DIGITAIS SÍNCRONOS DESENVOLVIDOS EM NANOTECNOLOGIAS CMOS. A PRESENTE INVENÇÃO É COMPOSTA POR UM FLIP-FLOP MESTRE-ESCRAVO (1, 2), UM ELEMENTO DE ATRASO (3) E UM ELEMENTO DETECTOR DE ESTABILIDADE (4) O PRINCIPAL OBJETIVO É DETETAR TRANSIÇÕES DE DADOS TARDIAS NA ENTRADA DO FLIP-FLOP (6), CONSTITUINDO ASSIM UM SENSOR DE PERFORMANCE PREDITIVO PARA CIRCUITOS DIGITAIS SÍNCRONOS, QUE PODE PREVER ERROS PROVOCADOS PELO ENVELHECIMENTO LENTO DOS TRANSÍSTORES QUE COMPÕEM O CIRCUITO INTEGRADO. A PRINCIPAL VANTAGEM É O SENSOR TORNAR-SE MAIS SENSÍVEL ÀS TRANSIÇÕES TARDIAS NA ENTRADA DO FLIP-FLOP (6), À MEDIDA QUE O PRÓPRIO SENSOR ENVELHECE, OU QUE A TENSÃO DE ALIMENTAÇÃO DIMINUI, OU QUE A TEMPERATURA AUMENTE. O SENSOR ADAPTA-SE, AUMENTANDO A SUA SENSIBILIDADE, À MEDIDA QUE AS CONDIÇÕES DE FUNCIONAMENTO DO CIRCUITO FAZEM AUMENTAR A PROBABILIDADE DE OCORRÊNCIA DE ERROS DE PERFORMANCE.
Patent PT-106351-B (PT)
Title: Mistura fungicida sinérgica contendo dimetomorfe e propamocarbe-hidrocloreto
Inventor: DUARTE ANTÓNIO MANUEL VASCONCELOS
IPC: A01N25/04
Filed: 2012-06-01
Abstract: A PRESENTE INVENÇÃO PROPORCIONA UMA COMPOSIÇÃO FUNGICIDA QUE COMPREENDE UMA MISTURA DE DIMETOMORFE E DE PROPAMOCARBE-HIDROCLORETO, SOB A FORMA DE UMA SUSPENSÃO CONCENTRADA CONTENDO 72 G/L A 90 G/L DE DIMETOMORFE E 400 G/L A 500 G/L DE PROPAMOCARBE-HIDROCLORETO. A PRESENTE INVENÇÃO TAMBÉM REFERE-SE A UM MÉTODO PARA O TRATAMENTO DE CULTURAS ATRAVÉS DA APLICAÇÃO DE 144 G/HA A 180 G/HA DE DIMETOMORFE E 800 G/HA A 1000 G/HA DE PROPAMOCARBE-HIDROCLORETO. A COMPOSIÇÃO É DE UM MODO PREFERIDO UTILIZADA PARA TRATAR O MÍLDIO DA BATATEIRA (PHYTHOPHTORA INFESTANS), MÍLDIO DO TOMATEIRO (PHYTHOPHTORA INFESTANS) E MÍLDIO DA ALFACE (BREMIA LACTUCAE).
Patent RO-85058-B (RO)
Inventor: MATSUMIYA SABURO
IPC: C22B1/244
Filed: 1982-06-18
Abstract: Procedeul de obtinere a peletelor din minereuri de fier si, de preferinta din cenusi de pirita, cu un continut de 0,1...0,5% As, conform inventiei, prevede preamestecarea în proportiei de maximum 5% si, de preferinta 2...3%, cu un material reducator purtator de carbon, granulare în conditii uzuale, uscarea peletelor obtinute la 150 degree C, timp de 30 min, dezarseniere prin încalzire în atmosfera reducatoare la peste 800 degree C, de preferinta, la maximum 1000 degree C. în scopul obtinerii unor pelete calitativ superioare, cu un continut de As rezidual de maximum 0,01% si, de preferinta, de 0,005%, prin stropire purtatorilor de fier fin divizati, în proportiei de minimum 0,5%, cu smoala, aleasa între, smoala la tratarea termica a huilei, smoala de la carcarea termica întîrziata, carbune rafinat cu solvent si smoala de extractie din petrol, cu temperatura de înmuiere cuprinsa între 30 si 300 degree C si, de preferinta, între 60 si 150 degree C, greutatea specifica la 15 degree C cuprinsa între 1,02 si 1,90 si, de preferinta între 1,09 si 1,50 g/cm3, avînd un raport atomic H:C cuprins între 0,2 si 1,5 si, de preferinta între 0,5 si 1 si un continut însumat de benzen solubil si chinolina insolubila cuprins între 0,4 si 70% si, de preferinta, între 20 si 40% si dezarsenierea, de preferinta, al minimum 900 degree C a peletelor astfel obtinute, uscate preliminar.
Patent TW-213477-B (TW)
Title: Fibrous electrically-conductive filler and process for producing the same
Inventor: TAKAO HYASHI
IPC: C08L101/00
Filed: 1992-09-25
Granted: 1993-09-21
Abstract: A fibrous electrically-conductive filler comprises fibrous aluminum borate as a core material and a layer of a electrically-conductive substance which covers the core material or comprises fibrous aluminum borate as a core material, a layer of titanium oxide which covers the fibrous aluminum borate and a layer of a electrically-conductive substance which covers the titanium oxide layer. The fibrous electrically-conductive filler can be prepared by a process comprising the step of directly forming a layer of a electrically-conductive substance doped with antimony or fluorine on the surface of fibrous aluminum borate, or the steps of forming, on the surface of fibrous aluminum borate, an intermediate layer of titanium oxide in an amount ranging from 2 to 50% by weight on the basis of the weight of the fibrous aluminum borate and then forming a layer of a electrically-conductive substance doped with antimony or fluorine on the surface of fibrous aluminum borate. The filler has a low volume specific resistivity and is substantially excellent in electrical conductivity-imparting effect per unit weight thereof when it is added to a basic material such as a resin. The electrically-conductive substance coated on the filler surface is not peeled off and hence the filler does not cause loss of the electrical conductivity when it is incorporated into a basic material such as paper, a plastic, a rubber, a resin or a paint. The filler per se is white or transparent and, therefore, the color tone of such a basic material may be arbitrarily changed by the addition of a coloring agent.
Patent TW-199255-B (TW)
Title: Automatic gain control apparatus for a digital television signal receiver
Inventor: THEODOR MATTHIAS WAGNER
IPC: H04N5/44
Filed: 1992-10-09
Granted: 1993-02-01
Abstract: A high definition television receiver including analog and digital signal processing circuits receives an analog high definition television signal representative of digital television information. The received signal contains narrowband high priority information and low priority wideband information. An automatic gain control (AGC) signal is developed from the received analog signal by means of a root-mean-square amplitude detector.
Patent TW-209278-B (TW)
Title: A photo barrier scanning system used to read bar code and its canning method
Inventor: PAUL DVORKIS
IPC: G06K7/10
Filed: 1992-11-10
Granted: 1993-07-11
Abstract: A scanning system used to read bar code, which is characterized in: the system is consisted of generating narrow first photo barrier scanning pattern when the photo barrier light is pointing as the target; aiming the photo target on the desired position manually by the user so as to enabling the light to aim at the position; generating a broader second photo barrier scanning pattern capable of scanning all symbols to be read by a scanning device; a detection device which receives the symbol reflection light and sends out electric signals representing the symbol's data.
Patent TW-214574-B (TW)
IPC: C12S3/04
Filed: 1992-12-21
Granted: 1993-10-11
Abstract: Disclosed are strength loss resistant methods for treating cotton toweling with cellulase so as to impart permanent softening to the toweling. In particular, the methods disclosed herein involve the application of a specified amount of cellulase onto one or both of the surfaces of a cotton toweling so as to result in permanent softening of the toweling.
Patent TW-226468-B (TW)
IPC: H04N5/907
Filed: 1993-05-26
Granted: 1994-07-11
Abstract: An integrated semiconductor memory array includes a memory region, a writing buffer memory associated with the memory region, a writing pointer and an input buffer associated with the writing buffer memory, a reading buffer memory associated with the memory region, a reading pointer and an output buffer associated with the reading buffer memory, and a control device being formed of a memory control circuit and a data flow control circuit. A reading column address decoder controlling the reading pointer is associated with the reading buffer memory. A reading address control unit is connected to the reading column address decoder, and a reading address register is connected to the reading address control unit. A writing column address decoder controlling the writing pointer is associated with the writing buffer memory. A writing address control unit is connected to the writing column address decoder, and a writing address register is connected to the writing address control unit. A line address decoder is provided in the memory control circuit or in the memory region and is triggerable by the reading address control unit and the writing address control unit.
Patent TW-241209-B (TW)
Title: Separation process of vanadium and barium from waste hydrogenation desulfurization catalyst
Inventor: TSAY SHANG-LIN
IPC: C01G39/00
Filed: 1993-06-30
Granted: 1995-02-21
Abstract: A separation process of Vanadium and Barium from waster hydrogenation desulfurization catalyst, which comprises the following steps: (a) oxidizing the residual oil, stacked carbon and sulfides in the waste hydrogenation desulfurization catalyst at 500~700 deg.C; (b) extracting out vanadium, barium, cobalt, nickel, etc in the oxidized catalyst by sulfuric acid; (c) dissolving 10% of trioctylamine (TOA) in 90% of kerosene as the extraction agent to extract out vanadium and barium from the soaked mixture and washing the extract by 0.2~0.5 N dilute sulfuric acid to remove the residual contamination of aluminum, nickel, cobalt ions; (d) mixing 2~4 N of sodium chloride with 0.05~2 N of sodium hydroxide to form a mixture to reversely extract out the barium in the vanadium-barium extract and maintaining the pH of the reverse extract at 1.5~4.0; and (e) reversely extracting the vanadium by 0.5~2 N of sodium hydroxide and maintaining the pH of the reverse extract at 9~11.