Abstract:
The present invention relates to a process for sulfurizing a hydrocarbon treatment catalyst, comprising: at least a first step of depositing, on the surface of the catalyst, one or more sulfurization auxiliaries of formula (I): and at least a second step of placing the catalyst in contact with a sulfur-containing gaseous mixture containing hydrogen and a sulfur compound.
Abstract:
A subject-matter of the present invention is a process for the regeneration of a catalyst comprising at least one metal from Group VIII and at least one metal from Group VIB which are deposited on a refractory oxide support, comprising: at least one first step of heat treatment of the catalyst in the presence of oxygen and at a temperature ranging from 350° C. to 550° C.; at least one second step of deposition, at the surface of the catalyst, of one or more additive(s) of formula (I):
Abstract:
The invention relates to a process for incorporating sulfur in the porosity of the solid particles of a catalyst for the conversion of hydrocarbons or an adsorbent. This process is carried out off-site in the presence of hydrogen sulfide that is pure or diluted in hydrogen or nitrogen, a process in which said particles are made to rise or fall in a sulfur incorporation zone that comprises at least one vibratory helical coil that is essentially tubular in shape and that comprises at least two turns, whereby said particles are subjected to a temperature profile over the majority of their path in said coil and whereby said particles are brought into contact with at least one fluid on at least one portion of their path.
Abstract:
The present invention concerns a process for “ex situ” treatment of a hydrogenation catalyst containing nickel prior to use, consisting of carrying out three steps, namely bringing the catalyst into contact with at least one sulphur-containing compound or agent (the step termed selectivation), treating said catalyst with hydrogen at a temperature of more than 250° C. (the step termed reduction) and passivation of said catalyst.
Abstract:
This invention relates to a process of ex-situ oxidizing passivation of catalysts for hydroconversion of hydrocarbons and especially of hydrotreating, in their sulfide state, process in which the sulfurized catalyst is brought into contact with an oxidizing gas flow that can be dry or wet, during heat treatment at more than 50° C. This invention, for passivation of sulfide phases, can be equally well implemented for a process that takes place in a fixed bed or a fluidized bed, for example a moving bed.
Abstract:
The present invention pertains to a process for sulfiding a catalyst composition comprising at least one hydrogenation metal component of Group VI and/or Group VIII of the Periodic Table, and an organic additive wherein the catalyst composition is first contacted with an organic liquid, followed by the catalyst being contacted with hydrogen and a sulfur-containing compound in the gaseous phase, wherein less than about 40%, preferably less than about 35%, more preferably less than about 25%, most preferably less than about 15%, of the sulfur present in the sulfided catalyst is added with the organic liquid. The process of the present invention makes it possible to use additive-containing catalysts without loss of activity in units which cannot effect gas phase start-up or are required to carry out a pressure test. The organic liquid may be a hydrocarbon with a boiling range of about 150-500° C., preferably gasoline, white spirit, diesel, gas oil, mineral lube oil, or white oil. The step of contacting the catalyst with hydrogen and a sulfur-containing compound may take place in one step at a temperature of about 150-450° C. It may also take place in two steps, with the first step being performed at a temperature which is lower than that of the second step, with the first step being carried out at a temperature of about 100-250° C. and the second step at a temperature of about 150-450° C.
Abstract:
The invention concerns a process for the regeneration of a used hydrocarbon treatment catalyst, preferably a reforming catalyst, containing at least one precious metal preferably platinum, optionally at least one additional metal selected from the group formed by metals from groups 7, 8, 9, 10, 13 and 14 of the periodic classification of the elements and copper, optionally and preferably at least one halogen, preferably chlorine, and at least one porous support, preferably alumina, said process comprising at least one of the following two successive steps: at least one step (1) for the combustion of the coke present on said catalyst, carried out in the presence of an oxygen-containing gas, at a temperature in the range of 300.degree. C. to 680.degree. C. for a time in the range 0.3 to 7 hours, at least one step (2) for oxyhalogenation, preferably oxychlorination, carried out in a controlled air atmosphere, at a temperature in the range 350.degree. C. to 550.degree. C., for a time in the range 0.3 to 3 hours and in the presence of a halogenated compound, wherein said process is carried out offsite, and in that a moving bed furnace is used for combustion step (1) and for oxyhalogenation step (2).
Abstract:
For Hydroisomerizering charges emanating from the Fischer-Tropsch process:a) hydrogen is reacted with the charge in contact with a catalyst 1 in a first reaction zone, the catalyst 1 comprising at least one alumina-based matrix and at least one hydro-dehydrogenation component andb) the effluent from the first reaction zone is put into contact with a catalyst 2 in a second reaction zone, the catalyst 2 comprising:20 to 97% by weight of at least one matrix,3 to 80% by weight of at least one Y zeolite in hydrogen form, the zeolite being characterized by an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of over 4.5; a sodium content of less than 1% by weight determined at 1100.degree. C. under calcining conditions; an a.sub.o crystal parameter of the elemental mesh of less than 24.70.times.10.sup.-10 m; and a specific surface area determined by the BET method of over 400 m.sup.2.g.sup.-1, andat least one hydro-dehydrogenation component.
Abstract translation:对于从费 - 托方法产生的加氢异构化电荷:a)氢与在第一反应区中与催化剂1接触的电荷反应,催化剂1包含至少一种基于氧化铝的基体和至少一个氢脱氢组分 和b)来自第一反应区的流出物与第二反应区中的催化剂2接触,催化剂2包含:至少一种基质20至97重量%,至少3至80重量% 一种Y型沸石为氢形式,沸石的特征在于SiO 2 / Al 2 O 3摩尔比超过4.5; 在1100℃下在煅烧条件下测定的钠含量小于1重量% 元素网的ao晶体参数小于24.70×10-10 m; 并且通过BET法测定的比表面积超过400m 2·g -1,和至少一种加氢脱氢组分。
Abstract:
The invention concerns a catalyst comprising:(a) a carrier containing at least 20% by weight of a fluorinated bridged clay of the smectite group,(b) an amorphous matrix containing at least 10% by weight of alumina, and(c) at least one group VIII metal or metal compound or an association of at least one group VI B metal or metal compound with at least one metal or compound of a metal selected from group VIII non-noble metal. The metals amount, calculated as oxide(s), in proportion to the final catalyst weight, is from 0.01 to 5% for the group VIII noble metals, from 0.01 to 20% for group VIII non-noble metals and from 5 to 40% for the association of group VI B metals with group VII non-noble metals.The carrier amount is such that the florinated bridged clay content of the final catalyst is at least 12% by weight; the matrix amount forms the complement to 100% by weight of the catalyst.The catalysts according to the invention can be used for mild hydrocracking operations having as an object improving the viscosity of the lubricating oils and hydrocracking of heavy oil cuts so as to obtain middle distillates: kerosene and gas oils
Abstract:
The invention relates to a new hydrocarbon hydroconversion catalyst, which is a mixture of an amorphous matrix, a zeolite and at least one metal of Group VIII and optionally of Group VI, the zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of about between 8 and 70, a sodium content of less than 0.15% by weight, a unit mesh parameter a.sub..degree. of between 24.55 and 24.24.times.10.sup.-10 m, a sodium ion recovery capacity C.sub.Na, expressed in grams of sodium per 100 grams of modified zeolite, greater than 0.85, a specific surface area greater than 400 m.sup.2 g.sup.-1, a water vapor adsorption capacity at 25.degree. C. (with a P/Po ratio of 0.10) greater than 6% by weight, a pore distribution between 1 and 20% of the pore volume contained essentially in pores of diameters between 20 and 80.times.10.sup.-10m, the remaining pore volume being contained essentially in pores of diameters less than 20.times.10.sup.-10 m, the matrix being characterized by the following textural properties:S.gtoreq.100 m.sup.2.g.sup.-1Vpt.gtoreq.0.4 cm.sup.3.g.sup.-1V.sub.75 .gtoreq.0.25 cm.sup.3.g.sup.-1V.sub.75 /Vpt.gtoreq.0.5.