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JP2003146913A |
To provide a method for producing a cycloalkadiene.This method for producing the cycloalkadiene uses a support type catalyst based on Re2O7/γ-Al2O3. The obtained cycloalkadiene is used for preparing perfumes.
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JP3407136B2 |
A refrigeration system for an ethylene plant uses a low pressure demethanizer and a binary refrigerant comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout the syste...
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JP2003137822A |
To provide a catalyst for metathesis.This supported catalyst is based on Re2O7/γ-Al2O3 and suitable for producing a cycloalkadiene by a metathesis reaction. The process for preparing the cycloalkadiene in the presence of the supported c...
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JP3404047B2 |
A method for converting a polymer or oligomer derived from an ethylenically unsaturated monomer into alkanes or into a hydrocarbon fraction or a lower oligomer fraction by controlled hydrocracking, wherein the polymer or oligomer is expo...
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JP2003513987A |
This invention relates to a process to produce propylene from a hydrocarbon feed stream, preferably a naphtha feed stream, comprising C5 and C6 components wherein a light portion having a boiling point range of 120° C. or less is introd...
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JP2003514098A |
The invention is related to a two step process wherein the first step comprises cracking an olefinic naphtha resulting in a cracked product having a diminished total concentration of olefinic species. The second step comprises hydroproce...
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JP3391805B2 |
PURPOSE: To obtain a new zeolite NU-85 useful as a catalyst for hydrocarbon conversion reactions such as alkylation and isomerization by intergrowing parent zeolites EU-1 and NU-87. CONSTITUTION: The zeolite NU-85 has a compsn., in the m...
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JP2003511483A |
The invention relates to a method for cracking hydrocarbons, especially for producing olefins, whereby a mixture consisting of hydrocarbons and water vapor is heated in a cracking furnace up to a temperature ranging from 750 DEG C to 900...
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JP2003510404A |
The invention concerns a method for reducing coking on the metal walls of a reactor cracking hydrocarbons or other organic compounds and on the metal walls of a heat exchanger placed downstream of the cracking reactor, whereby the metal ...
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JP3383679B2 |
PURPOSE: To enhance cost efficiency and to obtain a desired product of high value by using a device having a larger internal diameter of its envelope than a external diameter of its central manifold and forming a sufficient space for pro...
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JP2002542929A |
There is provided a zeolite bound zeolite catalyst which does not contain significant amount of non-zeolitic binder and can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeo...
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JP2002541231A |
A process for producing 2,6-dialkylnaphtalene from a hydrocarbon feedstock that contains at least one component selected from the group consisting of dialkylnaphtalene isomers, monoalkynaphtalene isomers, polyalkylnaphtalenes, and naphta...
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JP3347752B2 |
A zeolite, designated zeolite NU-86, having a molar composition expressed by the formula 100 XO2: equal to or less than 10 Y2O3: equal to or less than 20 R2/nO where R is one or more cations of valency n, X is silicon and/or germanium, Y...
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JP2002316954A |
To recover polyethylene in a large amount of production such as a reactive terminal vinyl oligomer and to readily convert the oligomer into an alcohol, an epoxy compound and an adduct of maleic anhydride to the oligo mer.This method for ...
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JP2002224652A |
To provide a method for classifying and reusing the shredded dust of waste household electrical appliances while both good classification precision and low cost are realized.Waste household electrical appliances are crushed, iron and a n...
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JP2002525380A |
A catalyst and an improved process for producing olefins by catalytic naphtha cracking are described. The process provides relatively higher yields over a commercially important range of naphtha conversion, while providing about the same...
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JP2002220351A |
To provide a method and device for producing butane and propane where a large amount of butane and propane can be produced at low cost using inexpensive water and a solid carbon material as raw materials.Synthesis gas is produced by cata...
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JP2002524582A |
A process for the production of olefins from a hydrocarbon comprising the steps of: a) providing a first feed stream comprising a gaseous fuel and an oxygen-containing gas; b) contacting the first feed stream with a first catalyst under ...
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JP2002524429A |
A process and catalyst for the partial oxidation of paraffinic hydrocarbons, such as ethane, propane, naphtha, and natural gas condensates, to olefins, such as ethylene and propylene. The process involves contacting a paraffinic hydrocar...
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JP2002524429A5 |
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JP3302553B2 |
To provide a catalyst of a new kind converting a 9 or more C heavy aromatic compd. to a light aromatic compd. and still more increased in activity forming BTX and stability. This catalyst is constituted of a carrier consisting of 30-70wt...
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JP2002513845A |
A process for selectively producing C3 olefins from a catalytically cracked or thermally cracked naphtha stream. The naphtha stream is introduced into a process unit comprised of a reaction zone, a stripping zone, a catalyst regeneration...
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JP2002513777A |
A process for selectively producing C2-C4 olefins from a catalytically cracked or thermally cracked naphtha stream. The naphtha stream is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an a...
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JP2002513821A |
A process for selectively producing C2-C4 olefins from a catalytically cracked or thermally cracked naphtha stream is disclosed. A mixture of the naphtha stream and a stream of steam is feed into a reaction zone where it is contacted wit...
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JP2002513822A |
The invention provides a method for converting an olefinic hydrocarbon feedstock to propylene comprising: contacting a hydrocarbon feedstock under catalytic cracking conditions with a catalyst comprising a catalyst selected from the grou...
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JP3277199B2 |
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JP2002511046A |
The present invention refers to a microporous crystalline material of zeolitic nature named ITQ-3, to the process of preparation thereof and to the use thereof in processes of separation and transformation of organic compounds. In its ca...
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JP2002503750A5 |
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JP2002504116A |
A isomerization process for C4 to C15 olefins carried out by the reaction of C4 to C15 olefins, having a first skeletal distribution, with aromatic compounds under alkylation conditions to produce an alkylated aromatic product, dealkylat...
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JP2002504169A |
(57) [Summary] The present invention provides improvements in the method of decomposing hydrocarbons into critical olefins, ethylene and propylene, including applying a positive temperature gradient over the entire catalytic contact regi...
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JP3254122B2 |
To provide a thermal cracking pipe for hydrocarbons, high in yield of an olefin, hardly having deposition of coke into the pipe, long in period capable of continuously operating and capable of improving operation rate of the whole therma...
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JP3253642B2 |
A process is provided for hydrodealkylation of alkylaromatic hydrocarbons to produce benzene or BTX over catalyst comprising a noble metal and a synthetic zeolite, said zeolite characterized by an X-ray diffraction pattern including inte...
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JP3241593B2 |
To obtain the subject two compounds in extremely high yield and high selectivity while suppressing unnecessary consecutive reaction or decomposition reaction, etc., by thermally decomposing a polystyrene under a specific condition. Therm...
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JP2001526248A |
There is provided a process for producing high-purity meta-xylene by converting a hydrocarbon feedstream comprising at least about 5 wt % ethylbenzene and at least about 20 wt % meta-xylene, over a single molecular sieve catalyst under e...
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JP2001526707A |
A two-stage process for obtaining a substantial amount of olefinic product from a residua feedstock. The first stage is comprised of a thermal process unit containing a reaction zone comprised of a horizontal moving bed of fluidized hot ...
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JP2001525725A |
A novel zeolite catalyst comprising an acid treated zeolite impregnated with zinc and at least one other metal selected from the group consisting of Group 4B, Group 6B, Group 3A, Group 4A and Group 5A of the periodic table of elements, a...
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JP2001524537A |
This process for the manufacture of norbornene from dicyclopentadiene (DCPD) and ethylene is characterized in that the DCPD is subjected to partial monomerization to CPD by preheating:at a temperature of 140° C. to 240° C.; andunder a ...
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JP2001335514A |
To increase the recovery ratio of styrene monomer by raising the decomposition ratio and suppressing the side reactions of the styrene monomer when polystyrene is decomposed in high-temperature and high-pressure water.This method is to d...
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JP2001316303A |
To provide a method for recovery of styrene monomer from polystyrene resin by a catalytic method capable of pyrolizing a polystyrene resin at a comparatively low temperature and suppressing cost of equipment or the like low, recovering a...
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JP2001302560A |
To provide a method and an apparatus for producing a high purity cyclopentadiene or a high-purity cyclopentadiene derivative and further a method for producing a high purity metallocene or a high-purity metallocene derivative used as a r...
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JP2001294708A |
To enable a styrene monomer to be recovered from a polystyrene resin in a high yield. Styrene monomer is obtained by dissolving a polystyrene resin in a solvent mainly comprising a styrene monomer, mixing the resultant solution with heat...
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JP2001519406A |
The present invention relates to a process of preparing dialkylnaphthylenes and polyalkylenenaphthyleneates dialkylnaphthalenes and polyalkylenenaphthalates.
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JP2001288124A |
To provide a method for recovering styrene monomer from impact- resistant polystyrene, in which the industrially useful styrene monomer can be recovered in a high yield and in a high purity from the impact-resistant polystyrene wastes wh...
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JP2001240564A |
To provide a recovering method of styrene monomer from polystyrene resin by catalytic method in which polystyrene resin can be thermally decomposed at relatively low temperature, the ratio of low molecular component contained in thermall...
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JP2001513748A |
This invention relates to a process and a chemical plant for the production primarily of paraxylene. In particular the process and chemical plant utilize zeolite membranes for enhanced paraxylene production.
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JP2001200092A |
To provide a chemically recycling method of effectively recovering a styrene monomer from a styrenic resin without forming a carbide. By the use of decomposition reaction at a decomposition temperature of 280-600°C at a degree of depres...
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JP2001199908A |
To provide a thermally degrading method capable of increasiy the yield of a hydrocarbon gas such as ethylene and propylene. This method for producing the ethylene has a step far adding methane to a hydrocarbon feedstock gas before feedin...
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JP2001181217A |
To provide a dicyclopentadiene useful as a starting raw material for synthesizing polymers and various low mol. wt. derivatives without deactivating various metal catalysts, and to provide a method for purifying the same. This dicyclopen...
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JP3179051B2 |
To efficiently obtain the subject gas that is useful for increasing the calorie of town gas through a simple one-step process by bringing saturated lower hydrocarbons into contact with an Ni catalyst supported on a carrier in the presenc...
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JP3174913B2 |
Production of propylene oxide by reaction of propylene with a C4 or higher hydroperoxide where at least a portion of the propylene is derived from the hydroperoxide moiety.
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