Jukka Myllyoja - Profile on Academia.edu (original) (raw)
Papers by Jukka Myllyoja
Process for the production of hydrocarbons
Process for the production of hydrocarbons suitable for diesel fuel, characterized in that it com... more Process for the production of hydrocarbons suitable for diesel fuel, characterized in that it comprises the steps wherein a feedstock originating from renewable sources and comprising fatty acids or fatty acid derivatives or combinations thereof, and optionally a solvent or a mixture of solvent, is contacted with a heterogeneous catalyst which optionally has been pretreated and containing one or more Group VIII metals selected from platinum, palladium, nickel, iridium, ruthenium and rhodium, supported on oxides, mesoporous materials, carbonaceous supports or structured catalyst supports, and is carried out a decarboxylation reaction / decarbonylation at a temperature of 200-400o C, preferably 250-350o C, under a pressure of 0.1 MPa to 15 MPa, preferably 0.1-5 MPa, to produce, as a product, a mixture of hydrocarbons.
Process for the preparation of hydrocarbons by increasing the chain length of hydrocarbons
Procédé de préparation d' un composé hydrocarburé d' origine biologique
Process for the manufacture of aviation fuel or fuel mix for aviation fuels of biological origin
A process for producing aviation fuel or fuel mix jet fuel, wherein said process comprises a firs... more A process for producing aviation fuel or fuel mix jet fuel, wherein said process comprises a first step of subjecting a feed oil comprising fatty acids and / or esters of fatty acids of biological origin and hydrogen gas, to hydrodeoxygenation at a pressure between 10 and 150 bar, a temperature between 200 and 400 ° C, in the presence of a hydrogenation catalyst comprising a metal selected from Groups VIII and / or VIB of the Periodic System of Elements to yield n-paraffins; and a second step of subjecting the n-paraffins obtained from the first step and hydrogen gas to conditions sufficient to effect isomerisation in the presence of an isomerization catalyst to yield isoparaffins and distilling off the fractions obtained in the second stage in a fraction which boils in the range of gas in a fraction boiling in the gasoline range in a fraction boiling in the range of aviation fuel in a fraction boiling in the range of diesel and a stream of heavy recycle boiling at a temperature fro...
Procédé pour la production d'hydrocarbures dans l'intervalle des Diesels
A process for the preparation of dieselcarbonhydrider
Verfahren zur Herstellung einer Kohlenwasserstoffkomponente
Procédé pour la fabrication d'hydrocarbures d'origine biologique
La presente invention porte sur des hydrocarbures et en particulier sur la fabrication de composa... more La presente invention porte sur des hydrocarbures et en particulier sur la fabrication de composants hydrocarbones pouvant servir de carburants d’aviation ou de carbureacteurs ainsi que de bases pour melange pour des carburants d’aviation. Le procede comprend les etapes suivantes : dans la premiere etape une charge d'huile d'origine biologique et de l'hydrogene gazeux sont soumis a des conditions suffisantes pour effectuer une hydrodesoxygenation en presence d'un catalyseur d'hydrodesoxygenation pour produire des n-paraffines; dans la seconde etape les n-paraffines et l'hydrogene gazeux sont soumis a des conditions suffisantes pour effectuer une isomerisation en presence d'un catalyseur d'isomerisation pour produire des isoparaffines et des fractions sont separees; et la fraction ayant une temperature d'ebullition superieure a 200 °C sous pression atmospherique obtenue a partir de la seconde etape est recyclee vers une nouvelle isomerisation, l...
Verfahren zur herstellung von dieselkohlenwasserstoffen
Process for the preparation of the biological origin of the hydrocarbon component
Procédé amélioré pour la fabrication de composants de combustible liquide à partir de sources renouvelables
L'invention concerne un procede de production de composants de combustible liquide a partir d... more L'invention concerne un procede de production de composants de combustible liquide a partir d'une huile renouvelable. Dans ce procede, un produit de depart frais comprenant des acides gras satures est dilue au moyen d'un solvant lipophile organique, ledit solvant presentant une faible teneur en phosphore et en impuretes metalliques, inferieure a 5 ppm et inferieure a 10 ppm, respectivement. La dilution est mise en oeuvre avant et/ou pendant la purification, par au moins un processus de pretraitement, afin d'eliminer le phosphore et les impuretes metalliques. Le produit de depart purifie obtenu est ulterieurement charge dans au moins un processus de post-traitement afin de produire des composants de combustible liquide.
Méthode de synthèse d'un composant hydrocarboné
La presente invention concerne un procede de synthese d'un nouveau type d'huile de base h... more La presente invention concerne un procede de synthese d'un nouveau type d'huile de base hydrocarbonee de haute qualite d'origine biologique. Le procede selon l'invention comprend des etapes de cetonisation, d’hydrodesoxygenation et d'isomerisation. Les acides gras et/ou les esters d'acides gras bases sur des produits de depart biologiques sont preferentiellement utilises en tant que produits de depart.
Verbessertes Verfahren zur Herstellung von Flüssigbrennstoffkomponenten aus erneuerbaren Quellen
Procédé de cétonisation d'une matière biologique
La presente invention concerne un procede de production de cetones qui comprend les etapes consis... more La presente invention concerne un procede de production de cetones qui comprend les etapes consistant a : a) fournir une charge d'origine biologique comprenant des acides gras et/ou des derives d'acides gras ayant une longueur de chaine moyenne de 24 atomes de C ou moins, b) soumettre ladite charge a une reaction de cetonisation catalytique en presence d'un catalyseur K 2 O/TiO 2 , c) obtenir a partir de ladite reaction de cetonisation un flux de produit comprenant les cetones, lesdites cetones ayant une longueur de chaine d'hydrocarbure moyenne plus longue que la longueur de chaine d'hydrocarbure moyenne dans ladite charge d'alimentation, l'etape b) etant realisee directement sur ladite charge et en presence dudit catalyseur K 2 O/TiO 2 -comme seul catalyseur applique dans ladite reaction de cetonisation.
Processus de fabrication d'hydrocarbures d' origine biologique
Simultaneous Production of Base Oil Components and Fuel from Renewable Raw Materials
A method for the simultaneous production of suitable components for producing base oil components... more A method for the simultaneous production of suitable components for producing base oil components and fuel, comprising the steps of: a) introducing at a rate of 0.1 to 10 h-1 a feedstock comprising fatty acids and / or fatty acid esters in a reaction zone having a temperature range of 200 to 450 ° C and b) subjecting said feedstock to a ketonization reaction in said reaction zone at a hydrogen pressure of less than 10 MPa, in the presence of a dual catalyst configured to perform a ketonization reaction and hydrotreating reaction catalyst system comprising a catalyst ketonization of metal oxide wherein the metal is selected from the group consisting of Na, Mg, K , Ca, Sc, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Ti, Y, Zr, Mo, Rh, Cd, Sn, La, Pb, Bi, Ti, V and other rare earth metals and any combination thereof; and a catalyst metal hydrotreating wherein the metal is selected from the group consisting of Fe, Pd, Pt, Ni, Mo, Co, Ru, Rh, W and any combination thereof, c) obtaining ketones from ...
Procédé pour la production d'hydrocarbures
Procede de production d'hydrocarbures
L'invention concerne une matiere de base issue de sources renouvelables et convertie en hydro... more L'invention concerne une matiere de base issue de sources renouvelables et convertie en hydrocarbures dans les limites d'ebullition du carburant diesel par une mise en contact avec un catalyseur supporte contenant un metal/des metaux du groupe VIII, ce qui permet de reduire la consommation d'hydrogene.
Catalysis in Industry, 2010
Catalytic hydrogenation of linoleic acid and oleic acid to stearic acid over palladium on mesopo ... more Catalytic hydrogenation of linoleic acid and oleic acid to stearic acid over palladium on mesopo rous carbon sibunit (Pd/sibunit) catalyst was studied in a continuous trickle bed reactor with the weight hourly space velocity 5.4 h-1 at 120°C and 30 bar using tall oil fatty acid (TOFA) as reactor feed. Stearic acid preparation using TOFA as a raw material is of industrial importance. Pd/sibunit catalysts with spherical par ticle shape of the size 1.62 mm were synthesized with the palladium loadings 0.5, 1, and 2 wt %. The metal dispersion (%), metal particle size (nm), as well as metallic surface area (m 2 /g metal) of the three synthesized Pd/Sibunit samples were measured by CO chemisorption. The Pd/C catalysts were tested in linoleic acid hydrogenation, showing promising behavior in terms of activity, selectivity and stability to be used in fixed bed applications. The product stream from the fixed bed reactor was saved and analyzed by X ray fluores cence (XRF) and direct current plasma (DCP) spectroscopy. The catalyst activity increased with the Pd load ing. The lowest metal loading of 0.5 wt % gave the least prone to initial deactivation and thus the most stable catalyst. This catalyst can be recommended for farther pilot testing.
Fuel, 2010
A laboratory-scale fixed bed reactor (down-flow) was developed for the deoxygenation of dodecanoi... more A laboratory-scale fixed bed reactor (down-flow) was developed for the deoxygenation of dodecanoic (lauric) acid under inert atmosphere. This reaction can be utilized to produce renewable diesel components. The main products were undecane (decarboxylation) and undecene (decarbonylation). The catalysts were a palladium catalyst supported on mesoporous carbon, Sibunit (egg-shell type with spherical granules of 1.6-2.0 mm in diameter), and a commercial Pd/C catalyst. The challenge was to obtain a high activity and selectivity to undecane, as pure dodecanoic acid without any solvents was used. Moreover, the complete reactor system consisting of a reactant feed vessel, a pump, lines, a sampling valve, and a collector of the residue had to be heated, since saturated fatty acids with more than nine carbon atoms have a melting point exceeding 20°C. The influence of reaction conditions, such as reaction temperature (300-360°C), pressure (5-20 bar), gas flow rate, reactant concentrations, was studied. The reactant conversion increased when an inert gas (argon) flow was applied co-currently with the reactant flow. The argon pressure did not have any significant impact on the performance. The reason for the catalyst deactivation was determined to be coking.
Process for the production of hydrocarbons
Process for the production of hydrocarbons suitable for diesel fuel, characterized in that it com... more Process for the production of hydrocarbons suitable for diesel fuel, characterized in that it comprises the steps wherein a feedstock originating from renewable sources and comprising fatty acids or fatty acid derivatives or combinations thereof, and optionally a solvent or a mixture of solvent, is contacted with a heterogeneous catalyst which optionally has been pretreated and containing one or more Group VIII metals selected from platinum, palladium, nickel, iridium, ruthenium and rhodium, supported on oxides, mesoporous materials, carbonaceous supports or structured catalyst supports, and is carried out a decarboxylation reaction / decarbonylation at a temperature of 200-400o C, preferably 250-350o C, under a pressure of 0.1 MPa to 15 MPa, preferably 0.1-5 MPa, to produce, as a product, a mixture of hydrocarbons.
Process for the preparation of hydrocarbons by increasing the chain length of hydrocarbons
Procédé de préparation d' un composé hydrocarburé d' origine biologique
Process for the manufacture of aviation fuel or fuel mix for aviation fuels of biological origin
A process for producing aviation fuel or fuel mix jet fuel, wherein said process comprises a firs... more A process for producing aviation fuel or fuel mix jet fuel, wherein said process comprises a first step of subjecting a feed oil comprising fatty acids and / or esters of fatty acids of biological origin and hydrogen gas, to hydrodeoxygenation at a pressure between 10 and 150 bar, a temperature between 200 and 400 ° C, in the presence of a hydrogenation catalyst comprising a metal selected from Groups VIII and / or VIB of the Periodic System of Elements to yield n-paraffins; and a second step of subjecting the n-paraffins obtained from the first step and hydrogen gas to conditions sufficient to effect isomerisation in the presence of an isomerization catalyst to yield isoparaffins and distilling off the fractions obtained in the second stage in a fraction which boils in the range of gas in a fraction boiling in the gasoline range in a fraction boiling in the range of aviation fuel in a fraction boiling in the range of diesel and a stream of heavy recycle boiling at a temperature fro...
Procédé pour la production d'hydrocarbures dans l'intervalle des Diesels
A process for the preparation of dieselcarbonhydrider
Verfahren zur Herstellung einer Kohlenwasserstoffkomponente
Procédé pour la fabrication d'hydrocarbures d'origine biologique
La presente invention porte sur des hydrocarbures et en particulier sur la fabrication de composa... more La presente invention porte sur des hydrocarbures et en particulier sur la fabrication de composants hydrocarbones pouvant servir de carburants d’aviation ou de carbureacteurs ainsi que de bases pour melange pour des carburants d’aviation. Le procede comprend les etapes suivantes : dans la premiere etape une charge d'huile d'origine biologique et de l'hydrogene gazeux sont soumis a des conditions suffisantes pour effectuer une hydrodesoxygenation en presence d'un catalyseur d'hydrodesoxygenation pour produire des n-paraffines; dans la seconde etape les n-paraffines et l'hydrogene gazeux sont soumis a des conditions suffisantes pour effectuer une isomerisation en presence d'un catalyseur d'isomerisation pour produire des isoparaffines et des fractions sont separees; et la fraction ayant une temperature d'ebullition superieure a 200 °C sous pression atmospherique obtenue a partir de la seconde etape est recyclee vers une nouvelle isomerisation, l...
Verfahren zur herstellung von dieselkohlenwasserstoffen
Process for the preparation of the biological origin of the hydrocarbon component
Procédé amélioré pour la fabrication de composants de combustible liquide à partir de sources renouvelables
L'invention concerne un procede de production de composants de combustible liquide a partir d... more L'invention concerne un procede de production de composants de combustible liquide a partir d'une huile renouvelable. Dans ce procede, un produit de depart frais comprenant des acides gras satures est dilue au moyen d'un solvant lipophile organique, ledit solvant presentant une faible teneur en phosphore et en impuretes metalliques, inferieure a 5 ppm et inferieure a 10 ppm, respectivement. La dilution est mise en oeuvre avant et/ou pendant la purification, par au moins un processus de pretraitement, afin d'eliminer le phosphore et les impuretes metalliques. Le produit de depart purifie obtenu est ulterieurement charge dans au moins un processus de post-traitement afin de produire des composants de combustible liquide.
Méthode de synthèse d'un composant hydrocarboné
La presente invention concerne un procede de synthese d'un nouveau type d'huile de base h... more La presente invention concerne un procede de synthese d'un nouveau type d'huile de base hydrocarbonee de haute qualite d'origine biologique. Le procede selon l'invention comprend des etapes de cetonisation, d’hydrodesoxygenation et d'isomerisation. Les acides gras et/ou les esters d'acides gras bases sur des produits de depart biologiques sont preferentiellement utilises en tant que produits de depart.
Verbessertes Verfahren zur Herstellung von Flüssigbrennstoffkomponenten aus erneuerbaren Quellen
Procédé de cétonisation d'une matière biologique
La presente invention concerne un procede de production de cetones qui comprend les etapes consis... more La presente invention concerne un procede de production de cetones qui comprend les etapes consistant a : a) fournir une charge d'origine biologique comprenant des acides gras et/ou des derives d'acides gras ayant une longueur de chaine moyenne de 24 atomes de C ou moins, b) soumettre ladite charge a une reaction de cetonisation catalytique en presence d'un catalyseur K 2 O/TiO 2 , c) obtenir a partir de ladite reaction de cetonisation un flux de produit comprenant les cetones, lesdites cetones ayant une longueur de chaine d'hydrocarbure moyenne plus longue que la longueur de chaine d'hydrocarbure moyenne dans ladite charge d'alimentation, l'etape b) etant realisee directement sur ladite charge et en presence dudit catalyseur K 2 O/TiO 2 -comme seul catalyseur applique dans ladite reaction de cetonisation.
Processus de fabrication d'hydrocarbures d' origine biologique
Simultaneous Production of Base Oil Components and Fuel from Renewable Raw Materials
A method for the simultaneous production of suitable components for producing base oil components... more A method for the simultaneous production of suitable components for producing base oil components and fuel, comprising the steps of: a) introducing at a rate of 0.1 to 10 h-1 a feedstock comprising fatty acids and / or fatty acid esters in a reaction zone having a temperature range of 200 to 450 ° C and b) subjecting said feedstock to a ketonization reaction in said reaction zone at a hydrogen pressure of less than 10 MPa, in the presence of a dual catalyst configured to perform a ketonization reaction and hydrotreating reaction catalyst system comprising a catalyst ketonization of metal oxide wherein the metal is selected from the group consisting of Na, Mg, K , Ca, Sc, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Ti, Y, Zr, Mo, Rh, Cd, Sn, La, Pb, Bi, Ti, V and other rare earth metals and any combination thereof; and a catalyst metal hydrotreating wherein the metal is selected from the group consisting of Fe, Pd, Pt, Ni, Mo, Co, Ru, Rh, W and any combination thereof, c) obtaining ketones from ...
Procédé pour la production d'hydrocarbures
Procede de production d'hydrocarbures
L'invention concerne une matiere de base issue de sources renouvelables et convertie en hydro... more L'invention concerne une matiere de base issue de sources renouvelables et convertie en hydrocarbures dans les limites d'ebullition du carburant diesel par une mise en contact avec un catalyseur supporte contenant un metal/des metaux du groupe VIII, ce qui permet de reduire la consommation d'hydrogene.
Catalysis in Industry, 2010
Catalytic hydrogenation of linoleic acid and oleic acid to stearic acid over palladium on mesopo ... more Catalytic hydrogenation of linoleic acid and oleic acid to stearic acid over palladium on mesopo rous carbon sibunit (Pd/sibunit) catalyst was studied in a continuous trickle bed reactor with the weight hourly space velocity 5.4 h-1 at 120°C and 30 bar using tall oil fatty acid (TOFA) as reactor feed. Stearic acid preparation using TOFA as a raw material is of industrial importance. Pd/sibunit catalysts with spherical par ticle shape of the size 1.62 mm were synthesized with the palladium loadings 0.5, 1, and 2 wt %. The metal dispersion (%), metal particle size (nm), as well as metallic surface area (m 2 /g metal) of the three synthesized Pd/Sibunit samples were measured by CO chemisorption. The Pd/C catalysts were tested in linoleic acid hydrogenation, showing promising behavior in terms of activity, selectivity and stability to be used in fixed bed applications. The product stream from the fixed bed reactor was saved and analyzed by X ray fluores cence (XRF) and direct current plasma (DCP) spectroscopy. The catalyst activity increased with the Pd load ing. The lowest metal loading of 0.5 wt % gave the least prone to initial deactivation and thus the most stable catalyst. This catalyst can be recommended for farther pilot testing.
Fuel, 2010
A laboratory-scale fixed bed reactor (down-flow) was developed for the deoxygenation of dodecanoi... more A laboratory-scale fixed bed reactor (down-flow) was developed for the deoxygenation of dodecanoic (lauric) acid under inert atmosphere. This reaction can be utilized to produce renewable diesel components. The main products were undecane (decarboxylation) and undecene (decarbonylation). The catalysts were a palladium catalyst supported on mesoporous carbon, Sibunit (egg-shell type with spherical granules of 1.6-2.0 mm in diameter), and a commercial Pd/C catalyst. The challenge was to obtain a high activity and selectivity to undecane, as pure dodecanoic acid without any solvents was used. Moreover, the complete reactor system consisting of a reactant feed vessel, a pump, lines, a sampling valve, and a collector of the residue had to be heated, since saturated fatty acids with more than nine carbon atoms have a melting point exceeding 20°C. The influence of reaction conditions, such as reaction temperature (300-360°C), pressure (5-20 bar), gas flow rate, reactant concentrations, was studied. The reactant conversion increased when an inert gas (argon) flow was applied co-currently with the reactant flow. The argon pressure did not have any significant impact on the performance. The reason for the catalyst deactivation was determined to be coking.