A process plant and a process for production of a hydrocarbon fraction suitable for use as jet fuel from an oxygenate feedstock, which may be a feedstock being a renewable feedstock, including combining the feedstock with a diluent hydrocarbon stream to form a hydrotreatment feed stream to contact a material catalytically active in hydrotreatment under hydrotreating conditions to provide a hydrotreated intermediate product, directing at least an amount of said hydrotreated intermediate product to contact a material catalytically active in hydrocracking under hydrocracking conditions to provide a hydrocracked intermediate product, separating the hydrocracked intermediate product in a hydrocracked intermediate liquid fraction and a gaseous fraction, directing at least an amount of said hydrocracked intermediate liquid fraction to contact a material catalytically active in hydrodearomatization under hydrodearomatization conditions to provide a treated product comprising the hydrocarbon fraction suitable for use as jet fuel.

A process plant and a process for production of a hydrocarbon suitable for use as jet fuel from a feedstock being a renewable feedstock or an oxygenate feedstock, including combining the renewable feedstock with an amount of a hydrocracked intermediate product, directing it to contact a material catalytically active in hydrodeoxygenation under hydrodeoxygenation conditions to provide a hydrodeoxygenated intermediate product, fractionating the hydrodeoxygenated intermediate product in at least two fractions including a first fraction of which at least 90% boils below a defined boiling point and a second fraction of which at least 90% boils above the defined boiling point, directing at least an amount of the second fraction to contact a material catalytically active in hydrocracking under hydrocracking conditions to provide the hydrocracked intermediate product, the process being suited for efficiently converting the upper-boiling point of an oxygenate feedstock such as a renewable feedstocks to a lower boiling product.

A process plant and a process for production of a hydrocarbon suitable for use as jet fuel from a feedstock being a renewable feedstock or an oxygenate feedstock, including combining the feedstock with an amount of a liquid diluent, directing it to contact a material catalytically active in hydrodeoxygenation under hydrotreating conditions to provide a hydrodeoxygenated intermediate product, directing at least an amount of the hydrodeoxygenated intermediate product to contact a material catalytically active in hydrocracking under hydrocracking conditions providing the hydrocracked intermediate product, separating the hydrocracked intermediate product in a vapor fraction and a liquid fraction, directing at least an amount of the liquid hydrocracked product to contact a material catalytically active in isomerization under isomerization conditions to provide an isomerized intermediate product, and fractionating the isomerized intermediate product to provide at least a hydrocarbon suitable for use as jet fuel.

A process plant and a process for production of a hydrocarbon suitable for use as jet fuel from a feedstock being a renewable feedstock or an oxygenate feedstock, including combining the feedstock with an amount of a liquid diluent, directing it to contact a material catalytically active in hydrodeoxygenation under hydrotreating conditions to provide a hydrodeoxygenated intermediate product, directing at least an amount of the hydrodeoxygenated intermediate product to contact a material catalytically active in hydrocracking under hydrocracking conditions providing the hydrocracked intermediate product, separating the hydrocracked intermediate product in a vapor fraction and a liquid fraction, directing at least an amount of the liquid hydrocracked product to contact a material catalytically active in isomerization under isomerization conditions to provide an isomerized intermediate product, and fractionating the isomerized intermediate product to provide at least a hydrocarbon suitable for use as jet fuel.

The object of the invention is a method for producing naphthenic process oils that have a high content of naphthenic carbon atoms of 20-60 wt % and a low content of polycyclic aromatics of less than 3 wt %, determined in accordance with IP 346, by the hydrogenation of a process oil educt that has a high content of polycyclic aromatics. The method in accordance with the invention enables secondary extracts, such as are formed in the production of label-free process oils, even in a mixture with primary extracts, to be utilized in an economically meaningful way. The resulting process oils are likewise label-free, so that the use of PCA-containing process oils can be reduced and less of these substances will get into the environment. Through this the environment and in particular health are less stressed. In addition, the starting substances in this way can lead to a different use and no longer have to be added to heating oil. By avoiding heating oil, CO.sub.2 emissions are also reduced. Also, through the direct hydrogenation of DAE, high value naphthenic process oils are obtained by the method in accordance with the invention. The process oils that are obtained contain surprisingly high amounts of naphthenic hydrocarbon compounds. In addition, an object of the invention is the use of the process oils produced in accordance with the invention as a plasticizer or extender oil for natural and synthetic rubber mixtures or thermoplastic elastomers.

The object of the invention is a method for producing naphthenic process oils that have a high content of naphthenic carbon atoms of 20-60 wt % and a low content of polycyclic aromatics of less than 3 wt %, determined in accordance with IP 346, by the hydrogenation of a process oil educt that has a high content of polycyclic aromatics. The method in accordance with the invention enables secondary extracts, such as are formed in the production of label-free process oils, even in a mixture with primary extracts, to be utilized in an economically meaningful way. The resulting process oils are likewise label-free, so that the use of PCA-containing process oils can be reduced and less of these substances will get into the environment. Through this the environment and in particular health are less stressed. In addition, the starting substances in this way can lead to a different use and no longer have to be added to heating oil. By avoiding heating oil, CO.sub.2 emissions are also reduced. Also, through the direct hydrogenation of DAE, high value naphthenic process oils are obtained by the method in accordance with the invention. The process oils that are obtained contain surprisingly high amounts of naphthenic hydrocarbon compounds. In addition, an object of the invention is the use of the process oils produced in accordance with the invention as a plasticizer or extender oil for natural and synthetic rubber mixtures or thermoplastic elastomers.

Method for preparing a catalyst comprising a bimetallic active phase made of nickel and copper, and a support comprising a refractory oxide, comprising the following steps:

a step of bringing the support into contact with a solution containing a nickel precursor is carried out;

a step of bringing the support into contact with a solution containing a copper precursor is carried out;

a step of drying the catalyst precursor at a temperature lower than 250° C. is carried out;

the catalyst precursor obtained is supplied to a hydrogenation reactor, and a step of reduction by bringing said precursor into contact with a reducing gas at a temperature lower than 200° C. for a period greater than or equal to 5 minutes and less than 2 hours is carried out.

Method for preparing a catalyst comprising a bimetallic active phase made of nickel and copper, and a support comprising a refractory oxide, comprising the following steps:

a step of bringing the support into contact with a solution containing a nickel precursor is carried out;

a step of bringing the support into contact with a solution containing a copper precursor is carried out;

a step of drying the catalyst precursor at a temperature lower than 250° C. is carried out;

the catalyst precursor obtained is supplied to a hydrogenation reactor, and a step of reduction by bringing said precursor into contact with a reducing gas at a temperature lower than 200° C. for a period greater than or equal to 5 minutes and less than 2 hours is carried out.

A method for preparing a catalyst with a bimetallic active phase made of nickel and copper, and a support comprising a refractory oxide, wherein the method involves: a) placing the support in contact with at least one solution containing a nickel precursor; b) placing the support in contact with a solution containing a copper precursor; wherein a) and b) are carried out separately in any order; c) drying the catalyst precursor at the end of a) and b), or b) and a), at a temperature less than 250° C.; and d) supplying the catalyst precursor obtained at the end of c), into a hydrogenation reactor, and carrying out a reduction step by placing the precursor in contact with a reducing gas at a temperature of less than 200° C. and for a period greater than or equal to 5 minutes and less than 2 hours.

The present invention is based on the use of a two-step hydrocracking process for the production of naphtha, comprising a step of hydrogenation placed upstream of the second hydrocracking step, the hydrogenation step treating the unconverted liquid fraction separated in the distillation step in the presence of a specific hydrogenation catalyst. Furthermore, the hydrogenation step and a second hydrocracking step are carried out under specific operating conditions and in particular under temperature conditions that are very specific with respect to one another.