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WO/1997/014766A1 |
The viscosity of hydrocarbon feeds is reduced from crudes or crude by thermal treatment.
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WO/1997/011330A1 |
Described is a heat exchanger comprising a nest of heat-exchange tubes held between two end plates, the heat exchanger being designed for connection downstream of a thermal-cracking installation. In order to reduce erosion of the base pl...
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WO/1997/008266A1 |
A visbreaking process for the conjoint disposal of polyolefin plastic materials and production of fuel oil basestock is disclosed that comprises co-feeding a feedstream comprising between 0.01 and 5 weight percent of plastic materials an...
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WO/1997/007255A1 |
A method of protecting carbon and low-alloy steels from high temperature hydrogen attack. A carbon or low-alloy steel portion of a reactor system that is to be contacted with high pressure hydrogen at elevated temperatures is provided wi...
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WO/1997/004043A1 |
A residuum feedstock (10) is upgraded in a short vapor contact time thermal process unit (11) comprised of a horizontal moving bed of fluidized hot particles. The resulting upgraded product (14) is then fed to a fluid catalytic cracking ...
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WO/1997/004041A1 |
A process for deasphalting a residua feedstock by use of a short vapor contact time thermal process unit comprised of a horizontal moving bed of fluidized hot particles. It is preferred that a mechanical means be used to fluidize a bed o...
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WO/1997/001522A1 |
An improved hydrocarbon conversion process, comprising applying a plating, cladding, paint or other coating to at least a portion of a hydrocarbon conversion reactor system which is used to convert hydrocarbons to products in the presenc...
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WO/1996/040840A1 |
A cyclone (500) suitable for use in a third stage separator in a fluid catalytic cracking unit or to improve other gas/solid separations. The cyclone has an inlet for gas and entrained solids (515) and a clean gas outlet tube (520) at on...
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WO/1996/038516A1 |
Apparatus is disclosed herein for reducing engine nitrogen oxide emissions by mixing hydrogen prepared from a portion or all of engine fuel within a simple burner. The apparatus includes an insulated burner (10) having an internal combus...
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WO/1996/029559A1 |
The invention concerns an arrangement for indirectly transferring heat to a flowing process medium, in particular for carrying out hydrocarbon steam reformation. The arrangement comprises a heating chamber (1), which can be heated from a...
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WO/1996/026992A1 |
Process for the thermal conversion of a hydrocarbon oil feed derived from a crude oil via a fractionation comprising at least an atmospheric distillation (1) in a crude distillation unit, which process comprises the steps of: a) subjecti...
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WO/1996/025471A1 |
Petroleum acids, e.g., naphthenic acids, are removed from crudes or crude fractions by thermal treatment.
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WO/1996/023853A1 |
High-vacuum oil refinery systems and process are disclosed in this invention. The systems and process enable to carry out vaporization and distillation of oils under the condition of 1 - 10-4 Torr of high vacuum and at the temperature of...
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WO/1996/020256A1 |
A steam cracking method and plant using erosive powder injection for at least partially decoking quenching exchangers without breaking the steam cracking cycle. The powders are preferably injected slightly upstream from the quenching exc...
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WO/1996/020257A1 |
A steam cracking method and plant wherein coking of the quenching exchangers (4) and the cracked gas discharge lines (5) may be eliminated or greatly reduced without contaminating the produced pyrolytic oil. Solid erosive particles are c...
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WO/1996/020258A1 |
A hydrocarbon steam cracking method wherein erosive particles are injected upstream from a quenching exchanger (4). Particles recovered in a primary separator (5) are cooled by pneumatic conveyence (7, 8, 9) through a transfer line (12),...
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WO/1996/020255A1 |
A flexible steam cracking method for steam cracking hydrocarbon feedstocks by injecting particles with an average size of 0.02-4 mm at at least one point upstream from an indirect quenching exchanger (4) without separating the cracking r...
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WO/1996/020259A1 |
A steam cracking method and plant using controlled injection of solid particles into a quenching exchanger (3). The particles are injected through 1 to 8 injection lines, slightly upstream from an impinger/diffuser (6) with solid surface...
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WO/1996/011400A1 |
A method of determining or predicting a value Px of a property of a feed X to a steam cracking process or yield of said process, which method comprises measuring the absorption Dix of said material at more than one wavelength in the regi...
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WO/1996/010619A1 |
The invention concerns a process for recovering synthetic raw materials and fluid fuel components from used or waste plastics in accordance with patent application P 43 11 034.7. At least a partial flow of the depolymer produced accordin...
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WO/1996/007716A1 |
Process for the thermal cracking of a residual hydrocarbon oil wherein a final 520 �C+ conversion of at least 35 % by weight is attained, which process comprises the steps of: (a) heating the residual hydrocarbon oil feed in a furnace ...
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WO/1996/005269A1 |
A process for reducing the amount of down time or yield loss associated with a sulfur upset when using a sulfur-sensitive catalyst. The process comprises applying a metallic coat, cladding, plating or paint to a reactor system which comp...
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WO/1995/033015A1 |
Described is a method for the thermal treatment, in particular cracking, of hydrocarbons, the method comprising the following steps: a hydrocarbon-containing medium is fed to a reactor, the medium is heated as it passes through the react...
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WO/1995/033016A1 |
Described is a reactor for the treatment, in particular the cracking, of hydrocarbons, the reactor comprising at least one input chamber (12) with at least one input port (10), an output chamber (16) with at least one output port (14) an...
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WO/1995/032263A1 |
A quench cooler or transferline heat exchanger for quenching the effluent from a cracking furnace has an inlet coupling between the cracking furnace tubes and the tubes of the quench cooler which splits the flow into a plurality of branc...
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WO/1995/022588A1 |
A heat exchange surface in reactors and/or heat exchangers is disclosed for processing installations for hydrocarbons and other organic compounds at high temperatures in the gaseous phase. The metallic surfaces that come into contact wit...
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WO/1995/022587A1 |
Tubular reactors or heat exchangers in processing plants for hydrocarbons and other organic compounds at high temperatures in the gaseous phase are to be protected against coke formation. The problem in such plants is that the usual stea...
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WO/1995/018849A1 |
Methods for cracking hydrocarbons in reactor systems having improved resistances to carburization and coking. The reactor system comprises a steel portion having provided thereon a Group VIB metal protective layer to isolate the steel po...
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WO/1995/014069A1 |
A process for disposing of plastic waste comprising mixing said waste from a holding vessel (10) with a highly aromatic furfural extract phase (12) thus dissolving the plastic in a highly aromatic furfural extract phase (12) in the holdi...
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WO/1995/011417A1 |
A reactor for thermocracking a fluid comprising a heat exchanger means (12) having at least one tube (14) for conveying the fluid stream from a respective tube inlet (16) to a tube outlet (18) while contacting the at least one tube with ...
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WO/1995/007959A1 |
The invention relates to a process and device with a convection zone (A) and a radiation zone (B) in which the process has a first stage for the precracking of a charge of light hydrocarbons (1) and a second stage for the subsequent co-c...
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WO/1995/004797A1 |
Coke formation and coil corrosion in pyrolysis furnaces is controlled by adding a mixture of a Group IA metal salt, a Group IIA metal salt and a boron acid or salt thereof to the hydrocarbon feedstock for the pyrolysis furnace.
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WO/1994/024232A1 |
The present invention generates a fuel gas which generates limited amounts of nitrogen oxides at the time of combustion, drastically increases a combustion duration time of a fuel per unit volume and can effect high temperature combustio...
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WO/1994/022979A1 |
A process is disclosed for processing used or waste plastic materials in order to recover chemical raw materials and liquid fuel components by depolymerisation of the used materials, which are transformed into a pumpable and into a volat...
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WO/1994/021749A1 |
Thermal cracking of a hydrocarbon feed comprising heating the feed in a furnace (1); supplying the feed to a reaction chamber (15); separating the stream from the reaction chamber (15) into a light products stream and into a heavy produc...
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WO/1994/018317A1 |
Dimerization and oligomerization of proteins are general biological control mechanisms that contribute to the activation of numerous cellular processes. We have developed a general procedure for the regulated (inducible) dimerization or ...
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WO/1994/015896A2 |
At least a portion of a hydrodealkylation reactor is treated with a carburization resistant composition, e.g. a film or coating applied to the base construction material; the reactor is operated under low sulfur conditions.
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WO/1994/014923A1 |
A process for the production of olefins in an olefin plant, which includes an olefin pyrolysis furnace having pyrolysis tubes in which hydrocarbon feedstock is cracked, comprises introducing hydrocarbon feed substantially free of phospho...
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WO/1994/013757A1 |
The invention concerns a method of obtaining, from the cracked gases emerging from a steam cracker, a polymerizable fraction of recyclable material consisting of styrene, methylstyrenes, vinyltoluenes, indene, methylindenes and fractions...
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WO/1994/011471A1 |
Used motor oil is cracked under the cracking temperature ranging from 520 to 650 �F, with the cracking process promoted by the presence of suspended metal particles generated by engine wear, to produce a diesel fuel which may subsequen...
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WO/1994/010264A1 |
A hydrocarbon feedstock (10) is cracked (12), and then the cracker product is compressed (18) and separated (20) into various hydrocarbon fractions including a stream containing hydrocarbons more highly unsaturated than mono-olefins (30)...
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WO/1994/008680A1 |
The invention relates to a method and an apparatus for selective and/or unselective vaporization and/or decomposition of, particularly, hydrocarbon compounds in liquid form, where the liquid is placed in an artificial gravitational field...
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WO/1994/006888A1 |
A delayed coking process comprising introducing a residuum hydrocarbon fraction to a coker heater (15a) and adding spent caustic through lead line (40) directly to the heated coker feed in the coke drum (16).
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WO/1994/006889A1 |
An improved pyrolysis or thermal craking process wherein coke or carbon formation on the metal surfaces of the processing equipment during high temperature pyrolysis or craking of hydrocarbons is significantly reduced by using relatively...
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WO/1994/005743A1 |
The invention concerns a process for the joint cracking of hydrocarbon charges (1), especially naphtha, and non hydrogenated C4 fractions (4b) in pyrolysis furnaces to produce olefines, in which the whole of the charge to be cracked is p...
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WO/1993/023498A1 |
Steam-free non-catalytic cracking of hydrocarbons in reaction zones each having surfaces heated externally and a heated surface to volume ratio above 3 cm-1, at a rate such that the flow through each reaction zone is essentially laminar.
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WO/1993/022399A1 |
A method of obtaining fuel distillates consists in thermal cracking of a mixture containing a residual oil product and a solid combustible mineral namely, sapropelite, at a temperature of 390-490 °C and at the pressure of up to 8 MPa wi...
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WO/1993/013037A1 |
A contact material composition containing an intimately mixed, mixed oxide of at least one cationic species of a naturally occurring Group IIIB element, at least one cationic species of a Group IIA metal of magnesium, calcium, strontium,...
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WO/1993/013039A1 |
An olefins process is described which combines cracking of a hydrocarbon feedstock with the coupling of methane using an oxygen-affording gas such that the heat evolved in the exothermic methane coupling reaction is effectively transferr...
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WO/1993/013294A1 |
The invention concerns the use of (A) esters of phosphoric acid and/or their partial salts with alkoxylated aliphatic, cycloaliphatic and/or aromatic alcohols and/or (B) fatty-acid oligo-dialkanolamides as inhibitors to prevent the forma...
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