Abstract: Disclosed is a system of making an olefin derivative from a dilute olefin feed. Dilute olefin is sent to an olefin reaction unit to form an olefin derivative product. The olefin derivative product is recovered from the reaction unit while a vent stream is also removed. Olefin is separated from the vent stream, and the olefin is sent to the olefin reaction unit for additional processing.

Abstract: The invention relates to a process for preparing diisobutylene (DIB) from an i-butene-containing C4 raffinate I, in which the C4 stream is passed through a first hydroisomerization reactor (A) and a fractionation column (B) and is thus largely freed of 1-butene and 2-butene. It is subsequently dimerized over an acidic catalyst installed in a reactive column (E). The feed stream to this reactive column contains not only i-butene but also butanes which make the reaction temperature in the fixed bed controllable by removal of the heat of reaction. In the fractionation column (B), a side stream can be subjected to a further hydroisomerization in a reactor (C).

Abstract: A process for increasing the yield of C10 plus hydrocarbon products from a Fischer-Tropsch plant which comprises the steps of (a) separating a Fischer-Tropsch product into a wax fraction and a condensate fraction; (b) dewaxing the wax fraction to produce a high boiling intermediate; (c) hydrofinishing the high boiling intermediate; (d) dehydrating the alcohols in the condensate fraction to convert them into olefins; (e) oligomerizing the olefins to form higher molecular weight hydrocarbons; (f) hydrofinishing the oligomerization mixture; and (g) and recovering a C10 plus hydrocarbon product from the hydrofinishing zone.

Abstract: A process for increasing the yield of C10 plus hydrocarbon products from a Fischer-Tropsch plant which comprises the steps of (a) separating a Fischer-Tropsch product into a wax fraction and a condensate fraction; (b) dewaxing the wax fraction to produce a high boiling intermediate; (c) hydrofinishing the high boiling intermediate; (d) dehydrating the alcohols in the condensate fraction to convert them into olefins; (e) oligomerizing the olefins to form higher molecular weight hydrocarbons; (f) hydrofinishing the oligomerization mixture; and (g) and recovering a C10 plus hydrocarbon product from the hydrofinishing zone.

Abstract: Process for the telomerization of a conjugated diene,

Abstract: Disclosed is a catalytic method for operating an oxygenate to olefins conversion reaction to provide a substantial quantity of prime olefin in the product. The product is provided by operating within desired parameters of weight hourly space velocity and oxygenate partial pressure. Operating the reaction to supply oxygenate at an oxygenate proportion index of at least 0.5, and controlling weight hourly space velocity and molar flow rate of oxygenate to the reactor to maintain a partial pressure-velocity compensation factor of at least 0.1 psia−1hr−1, a prime olefin selectivity of at least 45 wt. % can be maintained.

Abstract: Disclosed is a system of making an olefin derivative from a dilute olefin feed. Dilute olefin is sent to an olefin reaction unit to form an olefin derivative product. The olefin derivative product is recovered from the reaction unit while a vent stream is also removed. Olefin is separated from the vent stream, and the olefin is sent to the olefin reaction unit for additional processing.

Abstract: Lube base stock compositions, and methods for preparing the compositions, are disclosed. The methods involve subjecting a predominantly C5-11 olefin-containing feedstock to dimerization conditions, preferably using nickel ZSM-5 as the dimerization catalyst, to give a first product where the majority of the olefins in the olefinic feed are converted to hydrocarbons predominantly in the C10-22 range. The first product, optionally combined with an olefin-containing feed in the C10-22 range, preferably in the C12-18 range, is subjected to an additional dimerization step, using the same or a similar dimerization catalyst, to provide a second product that includes hydrocarbons in the lube base stock range. The olefinic feedstock may include paraffins as well as olefins, which paraffins do not participate in the dimerization reactions. Accordingly, the second product includes relatively heavy hydrocarbons in the lube base stock range, as well as the relatively light unreacted paraffins (and any unreacted olefins).

Abstract: A method for converting heavy olefins present in a product stream exiting a first reaction zone into light olefins and carbonaceous deposits on a catalyst without separation of the heavy olefins from the product stream exiting the first reaction zone. The method comprises creating the product stream exiting the first reaction zone, the product stream exiting the first reaction zone comprising the heavy olefins, moving the product stream exiting the first reaction zone to a second reaction zone without separation of the heavy olefins from the product stream exiting the first reaction zone, and contacting the product stream exiting the first reaction zone with the catalyst under conditions effective to form the light olefins, the contacting causing the carbonaceous deposits to form on at least a portion of the catalyst.

Abstract: The present invention provides a method for converting a feed containing oxygenates to olefins and comprises the following steps: providing a feed including an oxygenate; contacting the feed in a reactor apparatus with a catalyst including a molecular sieve, the contacting taking place under conditions effective to convert the oxygenate to a product including a light olefin, the conditions including a gas superficial velocity of at least two meters per second; and recirculating a first portion of the catalyst to recontact the feed.

Abstract: An integrated process for producing high value products, including for example distillate fuel, from syngas is disclosed. The integrated process of the present invention produces high value products from a Fischer Tropsch with minimal production of low value products, including methane. In a process of the present invention, syngas is reacted under low temperature Fischer-Tropsch reaction conditions to provide a hydrcarbon product stream comprising substantially waxy products. The waxy products are subjected to an olefin-selective paraffin cracking process, preferably in a Paragon reactor to form olefins. The resulting olefins are then subjected to oligomerization conditions to form iso-olefins. In the processes of the present invention, the hydrocarbon product stream from the Fischer Tropsch reaction comprises desirable low levels of methane, preferably below 10%.

Abstract: A process for isolating isobutene from a hydrocarbon mixture by a) combining the C4-hydrocarbon mixture with a primary C3- or C4-alkanol; b) reacting the isobutene in the C4-hydrocarbon mixture with the primary C3- or C4-alkanol in the presence of a heterogeneous catalyst to give the corresponding tertiary ether of isobutene, c) separating the resultant reaction mixture into the relatively low-boiling, unetherified C4-hydrocarbons and the relatively higher-boiling tertiary ether of isobutene with the aid of a distillation column, where the C4-hydrocarbons are taken off at the top, and the tertiary ether of isobutene obtained at the bottom is transferred into a reactor, d) cleaving this ether into isobutene and the corresponding primary C3- or C4-alkanol, e) distilling this mixture from d) in a further distillation column, and taking off the isobutene as the top product, which comprises carrying out step a) in a zone (4C) containing reactive internals and containing the catalyst for carrying out step b)

Abstract: A simplified process for jointly producing butene-1 and ether in a catalytic distillation column which comprises an upper catalytic zone for etherification and a lower catalytic zone for isomerization of C.sub.4 plus olefins and conversion of butadiene. The process is especially useful when combined with a process for the production of light olefins including ethylene and propylene from methanol. According to the invention, the produced butene-1 stream is combined with ethylene to produce polyethylene.

Abstract: A simplified process for jointly producing butene-1 and ether in a catalytic distillation zone which comprises an upper catalytic zone for etherification and a lower catalytic zone for isomerization of C.sub.4 plus olefins. The process is especially usefull when combined with a process for the production of light olefins including ethylene and propylene from methanol. According to the invention, the produced butene-1 stream is combined with ethylene to produce polyethylene.

Abstract: The present invention concerns a process for the conversion of an olefinic C.sub.4 cut to polyisobutene and to propylene by metathesis. The process comprises three successive steps: (1) selective hydrogenation of diolefins with simultaneous isomerisation of 1-butene to 2-butenes, (2) polymerisation of the isobutene, including optional prior extraction of the isobutene, (3) metathesis of 2-butene with ethylene. Part or all of the C.sub.4 cut may originate from the metathesis of an olefinic C.sub.5 cut with ethylene after hydroisomerisation of the C.sub.5 cut. Application to C.sub.4 and C.sub.5 steam cracking cuts.

Abstract: A supported palladium catalyst having a palladium content of from 0.001 to 2 wt %, in which palladium is present, substantially in the absence of promotor metal, in the form of a layer having a thickness of less than 5000 nm forming a shell around the support, in which the palladium is applied in the form of a sol to a support by impregnation, or by spraying on to a heated support, and the use of said catalyst for the hydrogenation of acetylenes and dienes.

Abstract: The present invention relates to benzoquinazoline thymidylate synthase inhibitors, processes for preparing them and pharmaceutical formulations containing them.

Abstract: An integrated process for converting methanol and other lower molecular weight oxygenates to gasoline and distillate range liquid hydrocarbons and ethene is disclosed. When it is desirable to increase ethene yield, an auxiliary methanol-to-olefins (MTO) fixed bed reactor unit is activated in conjunction with a continuously operated primary MTO fluidized bed reactor.

Abstract: A process for the synthesis of cis-olefins from cis-olefinic alcohols consisting essentially of the following steps:(a) reacting a cis-olefinic alcohol with a source of an alkali metal ion selected from the group consisting of lithium and sodium ions to form a first reaction product,(b) then contacting said thus formed first reaction product with a sulfonyl halide compound to form a second reaction product,(c) then containing said thus formed second reaction product with an alkyl magnesium compound and a cuprous salt to form a third reaction product comprising a cis-olefin wherein said steps are carried out in a suitable organic solvent.

Abstract: Synthesis gas (a mixture of hydrogen gas and carbon monoxide) is converted to hydrocarbons by flowing the gas first over iron-containing Fischer-Tropsch catalyst and then over a zeolite. The Fischer-Tropsch catalyst contains relatively little nitrogen as a result of its preparation by continuous precipitation at a pH ranging from about 6.6 to 6.9 and a temperature ranging from about 80.degree. to about 100.degree. C.

Abstract: The operating performance of a tubular reactor system designed for the exothermic conversion of methanol to light olefins is improved by cofeeding small quantities of light olefins with the methanol feed, whereby a more controllable operation is achieved. Catalyst activity and cycle length also improves significantly. The light olefins can be produced in situ during conversion.

Abstract: A process for converting oxygenated feedstock, such as methanol, dimethyl ether or the like, to liquid hydrocarbons.In the primary catalyst stage the feedstock is contacted with zeolite catalyst to produce C.sub.2 -C.sub.4 olefins and C.sub.5.sup.+ hydrocarbons.In a secondary catalytic stage with oligomerization catalyst comprising medium-pore shape selective acidic zeolite at increased pressure converts C.sub.3.sup.+ olefins to gasoline and/or distillate liquids.The improvement is a technique for recovering lower alkene for recycle to the primary catalytic stage.

Abstract: MTBE can be dissociated with high selectivity to isobutene and methanol over acid action exchange resin catalysts using very high LHSV, e.g. of 7 to 35 at pressure drops of 0.5 to 50 psig through the fixed bed at reaction pressure of 0.5 to 4 atmospheres and bed temperatures in a fixed bed tubular-reactor in the range of 90.degree. C. to 160.degree. C. Good conversions are obtained and undissociated MTBE and by-products of the dissociation may be recycled to a liquid phase MTBE synthesis.

Abstract: A process for converting olefinic feedstock, such as synthol olefinic liquid product of Fischer-Tropsch synthesis, to distillate hydrocarbons comprising the steps of contacting the feedstock at elevated temperature and pressure with acid zeolite conversion catalyst to oligomerize olefins and convert oxygenated hydrocarbons contained in said light oil at temperatures up to 325.degree. C. and in the presence of H.sub.2, thereby providing an effluent containing heavy distillate range hydrocarbon, light gas and byproduct water.

Abstract: A process for converting oxygenated feedstock comprising methanol, dimethyl ether or the like to liquid hydrocarbons comprising the steps ofcontacting the feedstock with zeolite catalyst in a primary catalyst stage at elevated temperature and moderate pressure to convert feedstock to hydrocarbons comprising C.sub.2 -C.sub.4 olefins and C.sub.5.sup.+ hydrocarbons;cooling and separating effluent from the primary stage to recover a liquid hydrocarbon stream and a light hydrocarbon vapor stream rich in C.sub.2 -C.sub.4 olefins;compressing the olefinic light hydrocarbon stream to condense a liquid olefinic hydrocarbon stream rich in C.sub.3.sup.

Abstract: Synthetic hydrocarbons, especially high octane gasoline, are prepared by catalytic conversion in two steps of a synthetic gas containing hydrogen and carbon oxides. In the first step the synthesis gas is converted at 10-80 bar and 200.degree.-300.degree. C. into an intermediate containing methanol and/or dimethyl ether. Useful catalysts for methanol synthesis are oxides of chromium, aluminium and/or copper, and zinc; and for dimethyl ether synthesis certain zeolites. In the second step the entire intermediate from the first step is converted at the same pressure as in the first step and an inlet temperature of 300.degree.-340.degree. C. while supplying heat to obtain an outlet temperature of 410.degree.-440.degree. C.; the difference between inlet and outlet temperature being at least 30.degree. C. higher than the temperature increase caused by the conversion reaction.

Abstract: An integrated process is provided for converting methanol, dimethylether or the like to heavy hydrocarbon products, especially distillate range hydrocarbons. In a first stage catalytic process oxygenate feedstock is converted to lower olefins. C.sub.3.sup.+ olefins are selectively sorbed in an interstage sorption fractionator and passed along with gasoline sorbent to a second stage oligomerization reactor. Distillate range hydrocarbons are useful as diesel fuel or the like.

Abstract: Pure tert.-olefins are prepared from mixtures of hydrocarbons, which contain at least one such tert.-olefin, by reaction with an alkanol to give the corresponding alkyl tert.-alkyl ethers, and subsequent cleavage of these ethers back to the corresponding pure tert.-olefins and the alkanol, and the separation of the pure tert.-olefin from the alkanol. For this, the alkanol present after the cleavage of the ether is separated from the tert.-olefin to the extent of 60 to 99% by weight by distillation, and the residual amount of alcohol in the olefin fraction is removed by adsorption from this fraction onto a synthetic ion exchanger as an absorber resin. The admixture of the alkanol to the mixture of hydrocarbons with at least one tert.-olefin is carried out partly by using the alkanol fraction arising from the separating off of the pure tert.-olefin, and partly by desorption of the alkanol from the absorber resin with the aid of the mixture of hydrocarbons containing at least 1 tert.-olefin.