Abstract:
Method for treating a carbon black tail gas wherein the carbon black tail gas is catalytically oxidized to produce an oxidized tail gas. The oxidized tail gas is then treated to remove particulate matter and sulfur oxides. If present, nitrogen oxides can be also removed.
Abstract:
The invention relates to a self-supported mixed metal sulfide (MMS) catalyst for hydrotreating hydrocarbon feedstock and to a method for preparing the catalyst. The catalyst can be any of: a bi-metallic catalyst consisting essentially of nickel sulfide and tungsten sulfide, with Ni:W in a mole ratio of 1:3 to 4:1, on a transition metal basis; a bi-metallic catalyst consists essentially of molybdenum sulfide and tungsten sulfide, with at least 0.1 mol% of Mo and at least 0.1 mol% of W, on a transition metal basis; or a tri-metallic catalyst ratios with components Ni:Mo:W in a region defined by five points ABCDE of a ternary phase diagram: A (Ni=0.72, Mo=0.00, W=0.25), B (Ni=0.25, Mo=0.00, W=0.75), C (Ni=0.25, Mo=0.25, W=0.50), D (Ni=0.60, Mo=0.25, W=0.15), E (Ni=0.72, Mo=0.13, W=0.15). The catalyst is characterized as having multiple phases for enhanced HYD and HYL activities, and outstanding HDN and HDS performance.
Abstract:
L'invention décrit un procédé de traitement d'une charge issue d'une source renouvelable comprenant une étape d'hydrotraitement en présence d'au moins un catalyseur en lit fixe, ledit catalyseur comprenant une fonction hydro-déshydrogénante et un support amorphe, à une température comprise entre 50 et 450°C, à une pression comprise entre 1 MPa et 10 MPa, à une vitesse spatiale horaire comprise entre 0,1 h-1 et 10 h-1 et en présence d'une quantité totale d'hydrogène mélangée à la charge telle que le ratio hydrogène/charge soit compris entre 50 et 1000 Nm3 d'hydrogène/m3 de charge, suivie d'une séparation à partir de l´effluent hydrotraité issu de l'étape a) de l'hydrogène, des gaz et d'au moins un effluent liquide hydrocarboné constitué d'au moins 50 % de n-paraffines linéaires, et d'un vapocraquage d'au moins une partie de l'effluent liquide hydrocarboné issu de l'étape b).
Abstract:
An improved catalyst activation process for olefinic naphtha hydrodesulfurization. This process maintains the sulfur removal activity of the catalyst while reducing the olefin saturation activity.
Abstract:
Hydrofining of petroleum and chemical feedstocks using bulk Group VIII/Group VIB catalysts. Preferred catalysts include those comprised of Ni-Mo-W.
Abstract:
Hydrotreating a petroleum feedstream comprised of at least 50 wt. % of an atmospheric distillation distillate boiling range product stream, preferably hydrodesulfurization of raw virgin petroleum distillates, using a bulk multimetallic catalyst comprised of at least one Group VIII non-noble metal and at least two Group VIB metal wherein the ratio of Group VIB metal to Group VIII metal is from about 10:1 to 1:10.
Abstract:
In a broad form, the present invention relates to a catalytically active material which contains a Co and/or Ni, a Group VI metal and a molecular sieve active in dewaxing, and in which the total concentration of Co and/or Ni and Group VI metal is between 1 wt% and 10 wt%, with the associated benefit of such a catalytic material being active in dewaxing, while reducing the recombination of olefin intermediates with hydrogen sulfide to form mercaptans. This is due to the hydrotreatment activity of the catalytically active material due to the combined presence of Co and/or Ni and Group VI metal making surface hydrogen available, which surface hydrogen reduces the net recombination of olefins with hydrogen sulfide to form mercaptans and which surface hydrogen also minimizes the risk of deactivation of the catalyst by carbon deposits. Furthermore the present invention relates to a process for dewaxing of a hydrocarbon feed of which 80%, preferably 90% and most preferably at least 98%boils in the temperature range 150-400°C.