摘要:
A method is described for optimizing the operation of a reaction section for the synthesis of hydrocarbons from a feed comprising synthesis gas, operated in the presence of a catalyst comprising cobalt, said method comprising the following steps: a) determining the theoretical partial pressure of CO in the reaction section; b) optionally, adjusting the partial pressure of CO determined in step a) to a value of 4 bar or higher; c) determining a new value for the theoretical partial pressure of CO in the reaction section.
摘要:
A method is described for optimizing the operation of a reaction section for the synthesis of hydrocarbons from a feed comprising synthesis gas, operated in the presence of a catalyst comprising cobalt, said method comprising the following steps: a) determining the theoretical partial pressure of CO in the reaction section; b) optionally, adjusting the partial pressure of CO determined in step a) to a value of 4 bar or higher; c) determining a new value for the theoretical partial pressure of CO in the reaction section.
摘要:
A process is described for improving the quality as a fuel of hydrotreated hydrocarbon blends by reaction with hydrogen in the presence of a bifunctional catalytic system comprising one or more metals selected from Pt, Pd, Ir, Ru, Rh and Re, and a silico-aluminate of an acidic nature, selected from a micro-mesoporous silico-alumina and a zeolite belonging to the MTW family. The process of the invention produces an increase in the cetane index and a decrease in the density and T95.
摘要:
A process is described for improving the quality as a fuel of hydrotreated hydrocarbon blends by reaction with hydrogen in the presence of a bifunctional catalytic system comprising one or more metals selected from Pt, Pd, Ir, Ru, Rh and Re, and a silico-aluminate of an acidic nature, selected from a micro-mesoporous silico-alumina and a zeolite belonging to the MTW family. The process of the invention produces an increase in the cetane index and a decrease in the density and T95.
摘要:
A process for recovering metals from a stream rich in hydrocarbons and carbonaceous residues by means of a treatment section, characterized in that it comprises the following steps: sending said stream to a primary treatment, effected in one or more steps, wherein said stream is treated in the presence of a fluxant agent in a suitable apparatus, at a temperature ranging from 80 to 180° C., preferably from 100 to 160° C., and subjected to liquid/solid separation in order to obtain a clarified product essentially consisting of liquids and a cake (oilcake); possibly subjecting the separated cake to drying, in order to remove the hydrocarbon component having a boiling point lower than a temperature ranging from 300 to 350° C. from the cake; sending the cake, possibly dried, to a secondary thermal treatment comprising: a flameless pyrolysis of the cake effected between 400 and 800° C., preferably between 500 and 670° C.; an oxidation of the pyrolysis residue effected in an oxidizing environment and at temperatures ranging from 400 to 800° C., preferably from 500 to 700° C.
摘要:
A process for recovering metals from a stream rich in hydrocarbons and carbonaceous residues by means of a treatment section, characterized in that it comprises the following steps: sending said stream to a primary treatment, effected in one or more steps, wherein said stream is treated in the presence of a fluxant agent in a suitable apparatus, at a temperature ranging from 80 to 180° C., preferably from 100 to 160° C., and subjected to liquid/solid separation in order to obtain a clarified product essentially consisting of liquids and a cake (oilcake); possibly subjecting the separated cake to drying, in order to remove the hydrocarbon component having a boiling point lower than a temperature ranging from 300 to 350° C. from the cake; sending the cake, possibly dried, to a secondary thermal treatment comprising: a flameless pyrolysis of the cake effected between 400 and 800° C., preferably between 500 and 670° C.; an oxidation of the pyrolysis residue effected in an oxidizing environment and at temperatures ranging from 400 to 800° C., preferably from 500 to 700° C.
摘要:
Process for producing mixtures of methanol and higher alcohols comprising feeding, into the reaction zone equipped with a catalytic system, H.sub.2, CO and possibly inert products with a molar ratio H.sub.2 /CO of between 0.2 and 10, at a temperature of between 200.degree. and 460.degree. C., at a pressure of between 2,000 and 30,000 KPa, and at a space velocity of between 1,000 and 40,000 GHSV, wherein the catalytic system corresponds to the following empirical formula: Zn.sub.x Cr.sub.y O.sub.t +z%M.sub.2 O wherein the x/y ratio is greater than 0.5 and less than 1, t is what is necessary for satisfying the valence with which the various elements appear in the catalyst, M is an alkaline metal selected from potassium and cesium, z, representing the percentage of alkaline oxide of the final catalyst, when the metal is potassium, is between 0.01 and 8 and, when the metal is cesium, between 0.01 and 20.6.
摘要:
Process for the skeleton isomerization of linear olefins, preferably n-butenes or n-pentenes, which consists in putting said olefins in contact with a catalyst comprising alumina on whose surface boron oxide is deposited in a quantity which is lower than 2.1.times.10.sup.-4 g/m.sup.2 of the surface of the alumina.
摘要翻译:线性烯烃,优选正丁烯或正戊烯骨架异构化的方法,其包括将所述烯烃与包含氧化铝的催化剂接触,所述催化剂在其表面上沉积氧化硼,其量低于2.1×10 -4 g / m2的氧化铝表面。