Class 585/634 - With heat conservation or using solid or molten inert heat carrier, e.g., regenerative furnace, etc.

Subclass of Class 585 - Chemistry of hydrocarbon compounds
Definition: Subject matter wherein a synthesis process includes the
No. of patents: 40
Last issue date: 04/17/2012

Number	Title	Issue Date
8158840	Process and apparatus for cooling liquid bottoms from vapor/liquid separator during steam cracking of hydrocarbon feedstocks A process and apparatus for steam cracking liquid hydrocarbon feedstocks utilizes a vapor/liquid separation apparatus to treat heated vapor/liquid mixtures to provide an overhead of reduced residue content and includes: i) indirectly heat exchanging liquid bottoms w...	04/17/2012
7902416	Fluidized bed reactor with back-mixing for dehydrogenation of light paraffins An improved process and system for the endothermic dehydrogenation of an alkane stream is described. The process and system of the present invention comprise a back-mixed fluidized bed reactor. The alkane stream is dehydrogenated in a single reactor stage by contact...	03/08/2011
7371916	Conversion of an alcoholic oxygenate to propylene using moving bed technology and an etherification step The average propylene selectivity per on-stream cycle of an alcoholic oxygenate to propylene (OTP) process using one or more fixed beds of a dual-function oxygenate conversion catalyst is substantially enhanced by the use of a feed pretreatment step involving a cata...	05/13/2008
7241470	Method for monitoring the course of a process using a reactive gas containing one or several hydrocarbons The method applies to a process such as cementation or chemical vapor infiltration or deposition, the process being carried out in an oven and the method comprising setting operating parameters of the oven, introducing a reagent gas into the oven, the reagent gas co...	07/10/2007
7241377	Salt bath refining A process for heating thermally unstable or difficult to heat liquid feeds, e.g., used lubricating oil (ULO) to dehydrate and/or recover distillable components therefrom, is disclosed. The liquid feed is heated by direct contact heat exchange with molten salt, prefe...	07/10/2007
7223896	Fines co-feed for maintaining efficient reactor hydrodynamics This invention provides processes for maintaining a desired particle size distribution in an oxygenate to olefin reaction system. In one embodiment, the invention comprises replacing lost catalyst fines with less active co-catalyst particles. By adding less active c...	05/29/2007
7208442	Molecular sieve compositions, catalyst thereof, their making and use in conversion processes The invention relates to a catalyst composition, a method of making the same and its use in the conversion of a feedstock, preferably an oxygenated feedstock, into one or more olefin(s), preferably ethylene and/or propylene The catalyst composition comprises a molec...	04/24/2007
7165423	Process for extracting ethane and heavier hydrocarbons from LNG A process for the extraction and recovery of ethane and heavier hydrocarbons (C2+) from LNG. The process covered by this patent maximizes the utilization of the beneficial cryogenic thermal properties of the LNG to extract and recover C2+ form the LNG using a unique...	01/23/2007
7155931	Liquefied natural gas processing A process and apparatus for the recovery of ethane, ethylene, propane, propylene, and heavier hydrocarbons from a liquefied natural gas (LNG) stream is disclosed. The LNG feed stream is directed in heat exchanger relation with a warmer distillation stream rising fro...	01/02/2007
7074971	Recovery of ethylene and propylene from a methanol to olefin reaction system The present invention provides new highly-efficient separation processes and systems for separating polymerization-grade ethylene and propylene from an initial effluent stream comprising ethane, ethylene, propylene, dimethyl ether, and one or more of propane, acetyl...	07/11/2006
6875899	Production of higher olefins A method of making a higher olefin product from a C4+ fraction separated from the hydrocarbon product produced by an oxygenate to olefin reaction unit. The C4+ fraction primarily contains butenes which may be directed to a...	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
6673978	Process for making olefins Disclosed is a method for converting an oxygenate feedstock to an olefin product. In particular, the method incorporates the use of a silicoaluminophosphate molecular sieve catalyst in the manufacture of ethylene and propylene. The method includes contact...	01/06/2004
6580010	Olefin recovery in an olefin production process Disclosed is a method for recovering olefin in an oxygenate to olefin production process. The method includes reacting a stream containing olefin with water in the presence of a hydrating catalyst to produce an alcohol containing stream. The alcohol conta...	06/17/2003
6506954	Process for producing chemicals from oxygenate There is provided a process for converting methanol and/or dimethyl ether to a product containing olefin, e.g., C2 to C4 olefins, C9+ aromatics and non-C9+ aromatics which comprises: 1) contacting a feed which contai...	01/14/2003
6258988	Method for reforming organics into shorter-chain unsaturated organic compounds A method is disclosed for reforming organics into shorter-chain unsaturated organic compounds. A molten metal bath is provided which can cause homolytic cleavage of an organic component of an organic-containing feed. The feed is directed into the molten m...	07/10/2001
5629464	Method for forming unsaturated organics from organic-containing feed by employing a Bronsted acid The invention relates to a method for producing an unsaturated organic compound from an organic-containing feed. The method includes providing a reactor containing a liquid bath which includes a Bronsted acid that can protonate an organic component of the...	05/13/1997
5476980	Process for the dehydrogenation of a dehydrogenatable hydrocarbon A process for the dehydrogenation of a dehydrogenatable hydrocarbon by contacting the hydrocarbon with a liquid comprising an alkali metal in a dehydrogenation zone to produce a dehydrogenated hydrocarbon and an alkali metal halide. The resulting alkali m...	12/19/1995
5315056	Catalyst regeneration in a dehydrogenation process In a dehydrogenation process wherein catalyst is regenerated off-stream by use of heated air, at least two reactors are in the regeneration cycle, with regeneration air being heated to regeneration catalyst temperature for introduction into the first reac...	05/24/1994
4760210	Partial oxidation system Method and apparatus for partial oxidation of hydrocarbonaceous gases, wherein a hydrocarbonaceous gas is preheated, reacted with oxygen, and quenched by means of a rotating matrix comprising glassy ceramic fibers. Such a rotating matrix may be constructe...	07/26/1988
4654458	Conversion of a lower alkane A method for converting a lower molecular weight alkane to synthesis gas to higher molecular weight materials comprising (a) passing a reaction mixture comprising the alkane and air at a pressure of from about 1 to about 50 pounds per square inch gauge th...	03/31/1987
4617109	Combustion air preheating Combustion air for steam cracking furnaces is preheated by indirect heat exchange with medium pressure and low pressure steam that has been expanded through steam turbines from high pressure steam produced in the hot section of an ethylene production plan...	10/14/1986
4437979	Solids quench boiler and process A process for quenching and cooling the reactor effluent in a thermal regenerative cracking (TRC) system is disclosed. The process for quenching the reactor effluent includes the steps of introducing particulate solids into the reactor effluent stream, pa...	03/20/1984
4321130	Thermal conversion of hydrocarbons with low energy air preheater Combustion air, prior to being introduced into the cracking furnace in a hydrocarbon pyrolytic conversion and separation system, is preheated by employing bottom pumparound, top pumparound and/or quench water streams diverting from the primary fractionato...	03/23/1982
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
4217204	Process for cracking hydrocarbons utilizing a mist of molten salt in the reaction zone Hydrocarbons are cracked in the presence of a mist of molten salt containing of basic compounds of alkali and alkaline earth metals and mixtures thereof, the amount of the molten salt to hydrocarbon being, by weight, from 0.01:1 to 10:1 followed by quench...	08/12/1980
4214113	Method for carrying out pyrolysis of hydrocarbon starting products Pyrolysis of hydrocarbon starting products is carried out in a cylindrical casing containing a liquid heat carrier at a predetermined level in the casing. The casing is split into a heating zone and a pyrolysis zone by a cylindrical baffle which extends a...	07/22/1980
4151217	Method of cooling cracked gases of low boiling hydrocarbons The formation and accumulation of coke or other reaction by-products of olefins produced by the pyrolysis of hydrocarbons is prevented. This is accomplished by maintaining the transfer portion extending from the outlet port of the pyrolysis reaction tube ...	04/24/1979
4143521	Process for the production of ethylene A process for the production of ethylene wherein low-level waste heat released during ethylene production is utilized in an ammonia absorption refrigeration system to generate a refrigerant, which refrigerant is used for cooling various process streams th...	03/13/1979
4136015	Process for the thermal cracking of hydrocarbons In a process for the thermal cracking of hydrocarbons by the introduction of liquid petroleum feedstock in atomized form into a stream of hot combustion products formed by the combustion of fuel and oxidant in successive burner and mixing zone, constricti...	01/23/1979
4129606	Temperature control of integrated fractionation column and reaction zone A hydrocarbon stream comprising C2 to C8 hydrocarbons is stripped at a high temperature to allow passage of the stripper bottoms stream into a reaction zone without further heating, and the effluent of the reaction zone is then heat ...	12/12/1978
4107226	Method for quenching cracked gases A method for quenching cracked gases and recovery of heat therefrom by cooling the gases in heat exchange with steam to increase superheat level of the steam and subsequently recovering heat from the superheated steam....	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
4097363	Thermal cracking of light gas oil at high severity to ethylene A process for thermal cracking of petroleum light gas oil to produce a product including ethylene comprising passing said oil, a diluent gas and entrained hot solids through a cracking zone at a temperature between 1,300° and 2,500° F. at a relatively h...	06/27/1978
4097362	Method for enhancing distillate liquid yield from an ethylene cracking process In a thermal cracking process employing inert hot solids as a heat source, the cracker effluent solids are passed to a burner for combustion of deposited and entrained coke. The liquid product of the thermal cracking process is distilled and the liquid re...	06/27/1978
4061562	Thermal cracking of hydrodesulfurized residual petroleum oils A process for the production of ethylene by the non-catalytic riser cracking of hydrodesulfurized residual petroleum oils in the presence of entrained hot, inert solids....	12/06/1977
4058576	Conversion of methanol to gasoline components A method and sequence of process steps is described for effecting the conversion of lower alcohols comprising methanol, ethanol and propanol to gasoline boiling range component arranged to significantly extract reaction heat and selectively control the re...	11/15/1977
4052479	Conversion of methanol to olefinic components A method and sequence of process steps is described for effecting the conversion of lower alcohols comprising methanol, ethanol, and propanol to primarily olefin boiling range component under conditions to significantly extract reaction heat and selective...	10/04/1977
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
3948759	Visbreaking a heavy hydrocarbon feedstock in a regenerable molten medium in the presence of hydrogen Heavy hydrocarbon feedstocks, such as atmospheric and vacuum residua, heavy crude oils and the like, are converted to predominantly liquid hydrocarbon products by contacting said feedstocks in the presence of hydrogen with a regenerable alkali metal carbo...	04/06/1976

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Class 585/634 - With heat conservation or using solid or molten inert heat carrier, e.g., regenerative furnace, etc.