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| Number | Title | Issue Date |
| 7309383 | Process for removing solid particles from a gas-solids flow Catalyst losses are prevented in riser reactor systems by using a low inlet velocity for the first cyclone separator in each multi-stage cyclone separator in the reactor. Catalyst particles not separated from the product output flow in an oxygenate-to-olefin reactor... | 12/18/2007 |
| 6875338 | Process for endothermic conversion of hydrocarbons, its uses, and a unit for carrying out the process The invention concerns a process for converting hydrocarbons using at least one globally endothermic chemical reaction, in which a hydrocarbon feed successively traverses at least two reaction zones each containing at least one solid catalyst and comprising between ... | 04/05/2005 |
| 6870072 | Heat recovery in an olefin production process Disclosed is a process for recovering heat in an oxygenate to olefin (“OTO”) production process. The process includes removing heat while maintaining the temperature of an effluent stream that comprises solid particles (typically catalyst particles) and a gas ph... | 03/22/2005 |
| 6664432 | Heat transfer in the acid catalyzed--effluent refrigerated alkylation process The acid catalyzed--effluent refrigerated alkylation of hydrocarbons in a shell and bare tube type alkylation reactor is improved by providing the bare tubes with internal inserts capable of increasing turbulence and mixing of refrigerant within the tubes... | 12/16/2003 |
| 6191332 | Method and apparatus for dehydrogenating aliphatic hydrocarbons to olefinic hydrocarbons The specification describes a method and a fixed bed apparatus for producing olefinic hydrocarbons from a charge of saturated aliphatic hydrocarbons with 2 to 20 carbon atoms and hydrogen in a chamber 1 comprising a plurality of parallel tubes 3 filled wi... | 02/20/2001 |
| 6180846 | Process and apparatus using plate arrangement for combustive reactant heating A process and apparatus for indirectly heating an endothermic reaction by combustion of reactants or products from the endothermic reaction using a plate heat exchange arrangement in a highly efficient manner. This invention is particularly suited for pro... | 01/30/2001 |
| 6159358 | Process and apparatus using plate arrangement for reactant heating and preheating A process and apparatus produces reaction products by indirectly preheating and heating reactants by indirect heat exchange. The use of the preheating step simplifies the reaction zone design by eliminating the need for external exchangers and is particul... | 12/12/2000 |
| 6118038 | Arrangement and process for indirect heat exchange with high heat capacity fluid and simultaneous reaction A channel reactor arrangement and a process that uses a high heat capacity heat exchange liquid to indirectly heat or cool by indirect heat exchange. The channel reactor arrangement maintains a pressure gradient through the channels and a pressure differe... | 09/12/2000 |
| 6100436 | Process and apparatus for controlling reaction temperatures with heating arrangement in series flow A process and apparatus for contacting reactants with a particulate catalyst while indirectly heating the reactants with a heat exchange medium improves temperature control by using an intermediate heat exchange fluid and system to prevent overheating of ... | 08/08/2000 |
| 6096937 | Process for dehydrogenation of ethylbenzene to styrene The present invention discloses a method and apparatus for dehydrogenating ethylbenzene into styrene which method and apparatus eliminate the need for multiple reactors and preheaters by providing a single compact reactor which utilizes the principle of a... | 08/01/2000 |
| 5914029 | High efficiency desulfurization process Economies in capital cost and operation of a hydrocarbon refining unit for desulfurization of diesel fuel are provided by a heat exchange sequence which eliminates the need for a fired heater on the product fractionation zone. The feed to the fractionatio... | 06/22/1999 |
| 5599510 | Catalytic wall reactors and use of catalytic wall reactors for methane coupling and hydrocarbon cracking reactions Dual-flow chemical reactor cores containing catalytic heat-transfer walls comprising both a gas-impervious material and a suitable catalyst which allows oxidative coupling of methane into higher hydrocarbons, dual-flow reactors having these catalytic heat... | 02/04/1997 |
| 5600053 | Process and apparatus for controlling reaction temperatures A reactor arrangement and process for indirectly contacting a reactant stream with a heat exchange stream uses an arrangement of corrugated heat exchange plates to control temperature conditions by varying the number and/or the arrangement of the corrugat... | 02/04/1997 |
| 5600052 | Process and apparatus for controlling reaction temperatures A reactor arrangement and process for indirectly contacting a reactant stream with a heat exchange stream uses an arrangement of heat exchange plates to control temperature conditions by varying the heat transfer factor in different portions of a continuo... | 02/04/1997 |
| 5365006 | Process and apparatus for dehydrogenating alkanes An alkane-containing feedstream is passed through one or more tubes, which may contain alkane-dehydrogenation catalyst, immersed in a bed of fluidized particles. The bed is at an elevated temperature which maintains the temperature within the tube(s) at a... | 11/15/1994 |
| 5254781 | Olefins process which combines hydrocarbon cracking with coupling methane 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 transferred to the endother... | 10/19/1993 |
| 5215650 | Cooling exothermic regenerator with endothermic reactions Operational flexibility of a fluid catalytic cracking process is improved by indirectly cooling catalyst in an endothermic catalyst cooler. Catalyst withdrawn from the FCC unit is cooled by driving an endothermic chemical reaction, which may be either the... | 06/01/1993 |
| 5167795 | Process for the production of olefins and aromatics A process for the production of olefins and aromatics from hydrocarbon feedstocks by catalytically cracking alone or cracking and dehydrogenating the hydrocarbons in the presence of an entrained stream of catalytic heat carrying solids at short residence ... | 12/01/1992 |
| 5160501 | Method for thermal conversion of methane and reactor for carrying out the method Method and apparatus for thermal conversion of methane to hydrocarbons of higher molecular weight, comprising a reactor 1 of elongated shape, connected at a first end to means 5 for supplying gas mixture containing methane (process gas), and connected at ... | 11/03/1992 |
| 5092981 | Process for quenching hydrocarbon cracking apparatus effluent Apparatus and process for compressing and quenching a cracked gas stream from a hydrocarbon cracking furnace including the step of feeding furnace output directly into an ejector in the effluent line, the ejector acting to quench and compress the effluent... | 03/03/1992 |
| 5053570 | Fluid bed paraffin aromatization Yield is improved in a fluid-bed catalytic paraffin aromatization process by tailoring heat transfer to match the endothermic heat load within the fluid bed.... | 10/01/1991 |
| 5030789 | Catalytic method for the dimerization, codimerization or oligomerization of olefins with the use of an autogenous thermoregulation fluid The invention provides a catalytic method for the dimerization or codimerization or oligomerization, in particular selective, of olefins, carried out under pressure, in a reaction zone 1 containing a solid catalyst bed in which is disposed a plurality of ... | 07/09/1991 |
| 5026946 | Homogeneous partial oxidation of a methane-containing paraffinic hydrocarbon A C2 and higher hydrocarbon product including ethylene is produced from a methane-containing gaseous paraffinic hydrocarbon feedstock by a process comprising heating the feedstock admixed with oxygen in an amount of at least 5% mol under elevat... | 06/25/1991 |
| 4943669 | Method according to the invention is notably applied to the selective dimerization of propylene into methyl-4-pentene-1 The invention provides a catalytic method for the dimerization or codimerization or oligomerization, particularly selectively, of olefins, carried out under pressure, in a reaction zone 1 containing a solid catalyst bed into which is disposed a plurality ... | 07/24/1990 |
| 4894210 | Purification of a hydrocarbon mixture Desulphurization of saturated or near saturated gaseous hydrocarbon stream is effected using a bed of a particulate adsorbent comprising zinc oxide. Condensation of the higher boiling components is avoided by heating the raw gas to a temperature at least ... | 01/16/1990 |
| 4709111 | Oligomerization process with integrated heat utilization A process flow for a catalytic oligomerization process is presented. The feed contacts a solid catalyst in a tubular reactor cooled by indirect heat exchange. The mixed-phase coolant used in the reactor is the reactor effluent itself, which has been coole... | 11/24/1987 |
| 4666587 | Waste oil purifying process A finished oil product is recovered from crude or waste oil contaminated with water and the like by heating the waste oil in a tank with a heating flame which may be gas or oil fired. The waste oil is heated until vapors including light ends and the desir... | 05/19/1987 |
| 4287377 | Hydrocarbon conversion Process and apparatus for a hydrocarbon conversion process, for example thermal cracking, in which feedstock is converted in a heated furnace, the furnace being heated by burning a mixture of fuel and preheated air. The preheated air is obtained by passin... | 09/01/1981 |
| 4225414 | Process for hydrocracking carbonaceous material to provide fuels or chemical feed stock A process is disclosed for hydrocracking coal or other carbonaceous material to produce various aromatic hydrocarbons including benzene, toluene, xylene, ethylbenzene, phenol and cresols in variable relative concentrations while maintaining a near constan... | 09/30/1980 |
| 4206032 | Hydrogenation of carbonaceous materials A method for reacting pulverized coal with heated hydrogen-rich gas to form hydrocarbon liquids suitable for conversion to fuels wherein the reaction involves injection of pulverized coal entrained in a minimum amount of gas and mixing the entrained coal ... | 06/03/1980 |
| 4205196 | Acid-type hydrocarbon alkylation with acid recycle streams at spaced points of a vertically-disposed elongated reactor A method of alkylating an alkylatable hydrocarbon with different alkylating agents, at different reaction temperatures and in a single reaction zone, in which an alkylatable hydrocarbon is contacted with an acid-type catalyst and at different points in an... | 05/27/1980 |
| 4144281 | HF Alkylation process utilizing compressed isoparaffin vapor in indirect heat exchanges In an HF alkylation of an isoparaffin, e.g., isobutane, with olefins, the hydrocarbon phase from the HF reactor effluent settler is charged to an HF separation zone. HF-free bottoms from the HF separation zone are charged to an isobutane stripper thereby ... | 03/13/1979 |
| 4117025 | Process for purifying diolefin A process for the separation of a diolefin from a mixture thereof with other hydrocarbons having boiling points close to that of the diolefin, comprising subjecting the mixture of hydrocarbons to reaction conditions which will dimerize the diolefin, separ... | 09/26/1978 |
| 4107224 | Manufacture of ethyl benzene Benzene and dilute ethylene are reacted in vapor phase over solid porous catalyst such as zeolite ZSM-5 in a series of reaction zones with intermediate injection of cold reactants and diluent to control temperature.... | 08/15/1978 |
| 4097544 | System for steam-cracking hydrocarbons and transfer-line exchanger therefor A system to produce ethylene includes, in one embodiment, separately cracking a heavy hydrocarbon feed and a lighter feed, cooling the latter product in a transfer-line exchanger before admixture with the former product and cooling the mixed product in a ... | 06/27/1978 |
| 4070412 | Method for production of acetylene by laser irradiation Production of acetylene by pyrolytic cracking of hydrocarbons following lr volumertric heating by: doping the feed stock with an absorbing gas such as ethylene to absorb laser radiation in a controlled manner: applying laser radiation in the form of a sh... | 01/24/1978 |
| 4046825 | Conversion of oxygenated compounds to gasoline A method for effecting chemical reactions of aliphatic hetero compounds comprising alcohols, halides mercaptans, sulfides, amines, ethers and carbonyl compounds with crystalline zeolite catalysts of the ZSM-5 type in a fluid catalyst operation is describe... | 09/06/1977 |
| 4021501 | Production of hydrocarbons In the thermal cracking of a hydrocarbon feedstock, the quenching of the gases leaving the cracking zone is deliberately deferred for a very short time to permit continued endothermic reaction and thereby increase the ethylene yield.... | 05/03/1977 |
| 3992475 | Thermal insulations in acid-catalyzed alkylation process A method for designing an improved process for the acid-catalyzed alkylation of hydrocarbons wherein the cost of the physical plant of the process is reduced. Thermal insulation provided for the exteriors of reaction and acid storage zones in the process ... | 11/16/1976 |
