摘要:
The invention relates to a process for producing an alkylbenzene from benzene and an aliphatic mono-olefin in the presence of a catalyst based on a dealuminized Y zeolite with a molar ratio SiO.sub.2 /Al.sub.2 O.sub.3 ranging from 8 to 70, the product of this reaction being afterwards fractionated into a first fraction containing non converted benzene and a mono-alkylbenzene and a second fraction containing a poly-alkylbenzene, said second fraction reacting then with benzene in the presence of a catalyst based on a dealuminized mordenite with a total atomic ratio Si/Al ranging from 30 to 80. The invention especially applies to the production of ethylbenzene and cumene respectively from ethylene and propene.
摘要翻译:本发明涉及一种在基于SiO 2 / Al 2 O 3的摩尔比为8至70的脱铝Y沸石的催化剂存在下由苯和脂族单烯烃生产烷基苯的方法,该反应产物之后 分馏成含有未转化的苯和单烷基苯的第一馏分和含有聚烷基苯的第二馏分,所述第二馏分在基于脱铝丝光沸石的催化剂存在下与苯反应,总原子比Si / Al 范围从30到80.本发明特别适用于从乙烯和丙烯生产乙苯和枯烯。
摘要:
Preparation of oligomers of C.sub.2 to C.sub.8 olefins useful in gasoline, yet fuel and diesel fuel is disclosed. The oligomerization is catalyzed by a modified mordenite in the H or NH.sub.4 + to form which has been sequentially treated with steam and an acid.
摘要:
Residual oils from steam-cracking or catalytic cracking, oils from coal liquefaction and oils from bituminous sands and shales are converted to gasoline by a process comprising the fractionation of the feed charge to a naphtha and a middle distillate: the naphtha, admixed with a gasoline cut "E", is hydrotreated and then dehydrogenated to gasoline; the middle distillate is hydrotreated and fractionated to gasoline and a heavier fraction, the heavier fraction is hydrocracked and fractionated, thus producing a gasoline cut which constitutes the above cut "E".
摘要:
Process for the production of a liquid effluent comprising at least 75% of aromatic hydrocarbons from a naphtha feed charge of high sulfur, nitrogen or oxygen content; said process comprises two steps: (a) hydrotreatment of the charge to decrease its sulfur, nitrogen or oxygen content to selected values, and (b) dehydrogenation of the product of step (a) in the presence of a supported catalyst whose neutralization heat by ammonia adsorption is lower than about 40 joules per gram at 300 mm Hg.
摘要翻译:用于生产包含至少75%的来自高硫,氮或氧含量的石脑油进料的芳烃的液体流出物的方法; 所述方法包括两个步骤:(a)加氢处理电荷以将其硫,氮或氧含量降低至所选值,和(b)步骤(a)的产物在负载型催化剂的存在下脱氢,所述催化剂的中和热由 氨吸附在300 mm Hg下低于约40焦耳/克。
摘要:
Reforming process operated in the presence of a catalyst comprising a carrier, platinum, rhodium or osmium, an additional metal consisting of chromium, tungsten, molybdenum, manganese, rhenium, germanium, tin, gallium, indium, thallium, thorium, cerium, samarium, lanthanum, zinc, cadmium, titanium or zirconium, and halogen.
摘要:
A C.sub.4 cut is upgraded according to the following steps:(a) the dried C.sub.4 cut is polymerized in the presence of fluorinated alumina, boron-alumina or silica-alumina, to convert at least 95% of isobutene to dimers and trimers, the conversion of the normal butenes being at most 3%,(b) the whole polymerization effluent is hydro-isomerized in the presence of a group VIII metal catalyst, to isomerize at least 90% of the 1-butene of said effluent,(c) the hydro-isomerization effluent is fractionated and a resultant fraction is alkylated.Resultant alkylate and mixture of dimers and trimers can be mixed and used as gasoline.
摘要:
Process for producing butane and gasoline of high isooctane content, from a C.sub.4 olefin cut issued from a steam cracking unit, comprising the steps of:polymerizing at least 90% of the isobutene of the cut mainly to dimers and trimers thereof,hydrogenating the resulting polymerization mixture to normal butane, isooctane and isododecane,supplying the effluent from the hydrogenation unit to a separation zone to recover a gaseous fraction and a liquid mixture, andfractionating the liquid mixture to separate gasoline of high isooctane content, a C.sub.3.sup.- fraction and a butane fraction which is recycled to the steam cracking unit.
摘要:
Highly pure 1-butene and premium gasoline are obtained by(a) subjecting a C.sub.4 olefinic cut to a polymerization-disproportionation to partly convert the isobutene thereof to a gasoline which, in turn, by partial disproportionation, yields a jet fuel base and butenes,(b) fractionating the effluent from step (a) to a mixture (.alpha.) of gasoline and jet fuel base and to a fraction (.beta.) containing isobutane, n-butane, butenes, a small amount of isobutene and a minor amount of butadiene,(c) selectively polymerizing fraction (.beta.) to convert more than 90% of the isobutene thereof to gasoline,(d) fractionating the polymerized fraction (.beta.) to a gasoline cut (.gamma.) containing isobutene dimers and trimers and to a fraction (.delta.) containing isobutane, n-butane and butenes,(e) selectively hydrogenating the fraction (.delta.),(f) removing isobutane from the hydrogenated fraction (.delta.) and(g) fractionating the deisobutanized hydrogenated fraction (.delta.) to obtain a fraction containing at least 99% of 1-butene, the mixture (.alpha.) being admixed with the cut (.gamma.).
摘要:
A process is provided for selectively polymerizing isobutene in an olefinic C.sub.4 cut comprising isobutene and normal butenes by contacting the cut with a catalyst consisting essentially of silica-alumina; whereby at least 90% of the isobutene and less than 10% of the normal butenes in the cut are converted.
摘要:
Process for hydrodealkylating an alkylaromatic hydrocarbon charge at a temperature from 400.degree. to 650.degree.C under a pressure from 1 to 30 kg/cm.sup.2 at a space velocity from 1 to 10 by reacting said charge with hydrogen in a molar proportion with respect to the effluent of the reactor in the range from 1 to 10, in the presence of a catalyst containing alumina and at least one metal selected from ruthenium, osmium, palladium, rhodium, iridium, platinum and manganese in an amount from 0.05 to 5 % of the catalyst, said catalyst having a specific surface from 1 to 100 m.sup.2 /g., a total pore volume of 0.2-0.8 g/cc and a heat of neutralization lower than 10 calories per gram are measured by ammonia adsorption at 320.degree. C. under 300 mm Hg.
摘要翻译:通过使所述电荷与氢气相对于流出物的摩尔比例反应,在400至650℃的温度下,在1至30kg / cm 2的压力下以1至10的空间速度对烷基芳烃进行加氢脱烷基化的方法 在含有氧化铝和选自钌,锇,钯,铑,铱,铂和锰中的至少一种金属的催化剂存在下,反应器的量为1至10,催化剂的量为催化剂的0.05至5% 所述催化剂具有1至100m 2 / g的比表面积,0.2-0.8g / cc的总孔容积和低于10卡路里/克的中和热通过在320℃下在300℃下的氨吸附来测量 mm Hg。