Class 208/228 - With preliminary treatment of feed

Subclass of Class 208 - Mineral oils: processes and products
Definition: Processes combined with a nonconversion treatment of the
No. of patents: 29
Last issue date: 04/15/2008

Number	Title	Issue Date
7358413	Process for reducing fouling from flash/separation apparatus during cracking of hydrocarbon feedstocks Hydrocarbon feedstock containing resid is cracked by a process comprising: (a) heating the hydrocarbon feedstock; (b) mixing the heated hydrocarbon feedstock with steam and optionally water to form a mixture stream; (c) introducing the mixture stream to a flash/sepa...	04/15/2008
7342145	Process for refining liquefied petroleum gas in a commercial scale The present invention relates to a novel process for refining the liquefied petroleum gas (LPG) in a commercial scale. The process comprises: sequentially performing fine desulfurization and mercaptan conversion of the LPG after alcohol amine treatment through desul...	03/11/2008
7326333	Apparatus and process for extracting sulfur compounds from a hydrocarbon stream Described is an apparatus and process for extracting sulfur compounds from a hydrocarbon stream. A prewash section for converting hydrogen sulfide to sodium sulfide by reaction with an alkali such as caustic communicates with an extractor section disposed directly a...	02/05/2008
7285697	Reduction of total sulfur in crude and condensate cracking A process for cracking hydrocarbon feedstock comprising at least one sulfur-containing compound comprising: heating the feedstock and a peroxide-containing compound, mixing the heated feedstock and peroxide-containing compound with a fluid and/or a primary dilution ...	10/23/2007
7247765	Cracking hydrocarbon feedstock containing resid utilizing partial condensation of vapor phase from vapor/liquid separation to mitigate fouling in a flash/separation vessel A process is provided for cracking hydrocarbon feedstock containing resid comprising: heating the feedstock, mixing the heated feedstock with a fluid and/or a primary dilution steam stream to form a mixture, optionally further heating the mixture, flashing the mixtu...	07/24/2007
7244871	Process and apparatus for removing coke formed during steam cracking of hydrocarbon feedstocks containing resids A process for decoking of a process that cracks hydrocarbon feedstock containing resid and coke precursors, wherein steam is added to the feedstock to form a mixture which is thereafter separated into a vapor phase and a liquid phase by flashing in a flash/separatio...	07/17/2007
7238844	Olefin oligomerization This invention is to a method of oligomerizing an olefin feed stream. The olefin feed stream contains at least one C2 to C12 olefin to obtain an olefin feed stream and has less than 1,000 ppm by weight oxygenated hydrocarbon. The olefin is olig...	07/03/2007
7235705	Process for reducing vapor condensation in flash/separation apparatus overhead during steam cracking of hydrocarbon feedstocks A process for reducing fouling during cracking of a hydrocarbon feedstock containing resid is provided which comprises: introducing a mixture stream of heated hydrocarbon feedstock mixed with steam to a flash/separation apparatus to form i) a vapor phase at its dew ...	06/26/2007
7220887	Process and apparatus for cracking hydrocarbon feedstock containing resid A process for cracking hydrocarbon feedstock containing resid comprising: heating the feedstock, mixing the heated feedstock with a fluid and/or a primary dilution steam stream to form a mixture, flashing the mixture to form a vapor phase and a liquid phase which co...	05/22/2007
7208640	Process for isolating highly pure 2-methoxypropene A process for isolating purified 2-methoxypropene from a mixture which comprises 2,2-dimethoxypropane, 2-methoxypropene, methanol, acetone, and optionally other carbonyl group-containing compounds, which process involves subjecting the mixture to distillation, addin...	04/24/2007
7205448	Process for the removal of nitrogen compounds from a fluid stream At lower temperatures an acidic molecular sieve adsorbent preferentially adsorbs water and basic organic nitrogen compounds over weakly basic organic nitrogen compounds such as nitrites. Elevated temperatures improve the capacity of acidic molecular sieve adsorbents...	04/17/2007
7193123	Process and apparatus for cracking hydrocarbon feedstock containing resid to improve vapor yield from vapor/liquid separation A process for cracking hydrocarbon feedstock containing resid comprising: heating the feedstock, mixing the heated feedstock with a fluid and/or a primary dilution steam stream to form a mixture, flashing the mixture to form a vapor phase and a liquid phase which co...	03/20/2007
7128828	Process for producing food grade wax A process for producing food grade wax which contains exceedingly low levels of nitrogen, sulfur and aromatic compounds. A waxy feedstock is firstly hydrotreated in a first hydrogenation zone to reduce the level of contaminants such as sulfur, nitrogen and aromatic ...	10/31/2006
7128829	Removal of impurities from liquid hydrocarbon streams A novel process effective for the removal of organic sulfur compounds, organic nitrogen compounds and light olefins from liquid hydrocarbons is disclosed. The process more specifically addresses the removal of these contaminants from aromatic compounds including ben...	10/31/2006
7125483	Corrosion control in olefin production plants A method for reducing acid corrosion and products of acid corrosion in a thermal cracking plant, the acid corrosion products being compounds of iron, chromium, nickel, lead, cadmium, manganese, mercury, magnesium, calcium, sodium, copper, zinc, lead, molybdenum, and...	10/24/2006
7074324	Process to remove sulfur contaminants from hydrocarbon streams A process for removing sulfur compounds from hydrocarbon streams by contacting the hydrocarbon stream, especially a gasoline stream, with an adsorbent material. The adsorbent material is regenerated with hydrogen or a hydrogen/H2S mixture. ...	07/11/2006
7029573	Composition and control method for treating hydrocarbon The invention relates to a composition and method for treating liquid hydrocarbons in order to remove acidic impurities, such as mercaptans, particularly mercaptans having a molecular weight of about C4 (C4H10S=90 g/mole) and higher,...	04/18/2006
7014751	Continuous liquid hydrocarbon treatment method The invention relates to a method for treating and upgrading a hydrocarbon containing acidic species such as mercaptans, comprising: (a) contacting the hydrocarbon, in the essential absence of oxygen, with a first phase of a treatment composition containing w...	03/21/2006
6960291	Naphtha desulfurization method The invention relates to a method for desulfurizing naphtha boiling-range hydrocarbons such as cracked naphtha. More particularly, the invention relates to hydrotreating the naphtha under selective hydrotreating conditions, and then removing mercaptans from the hydr...	11/01/2005
6955753	Treatment of crude oils A process and apparatus to extract and recover heavy metals and sulfur from crude oil or petroleum fuel products including the steps of emulsifying the crude oil with an emulsifying agent, adding a leach solution to the emulsified crude oil and leaching the emulsifi...	10/18/2005
6749741	Apparatus and process for prewashing a hydrocarbon stream containing hydrogen sulfide Disclosed is an apparatus and process for extracting sulfur compounds from a hydrocarbon stream. A prewash section for converting hydrogen sulfide to sodium sulfide by reaction with an alkali such as caustic communicates with an extractor section disposed directly a...	06/15/2004
6623627	Production of low sulfur gasoline A process for desulfurizing a gasoline stream while continuing to maintain the octane rating of the blend stock. A gasoline stream containing sulfur compounds and olefins is introduced into a fractionation zone to produce a low boiling fraction containing...	09/23/2003
6387249	High temperature depressurization for naphtha mercaptan removal The invention relates to naphtha hydrodesulfurization incorporating either high temperature depressurization or controlled heating for mercaptan removal. More particularly, the invention relates to a naphtha hydrodesulfurization process, wherein the hot n...	05/14/2002
6224750	Producing low sulfur hydrocarbons with biologically regenerated caustic A process is disclosed for producing very low sulfur content hydrocarbon streams by contacting a hydrocarbon feedstream with an aqueous alkaline treatment stream which has been regenerated by the biological conversion of sulfur compounds to elemental sulf...	05/01/2001
5865989	Process for sweetening liquid hydrocarbons A process for sweetening high mercaptan content gasoline or other liquid hydrocarbons is disclosed which utilizes aqueous caustic solution. A recycle stream is used to increase the conversion potential by reducing the relative mercaptan concentration of t...	02/02/1999
5271835	Process for removal of trace polar contaminants from light olefin streams A process is disclosed for improving catalyst performance and yields in the manufacture of motor gasoline components. More particularly the process is directed to the removal of H2 S, sulfur compounds, trace amounts of acetonitrile or acetone o...	12/21/1993
4902404	Hydrotreating process with catalyst staging Disclosed is a process for hydrotreating a hydrocarbonaceous feed wherein the feed is treated with hydrogen, at hydrotreating conditions, in a first catalyst zone containing a conventional hydrotreating catalyst. The treated feed is then further treated i...	02/20/1990
4596654	Hydrofining catalysts A catalyst composition is prepared by dissolving a suitable vanadium and oxygen containing compound, a suitable nickel (II) compound and ammonia in water, mixing this solution with an alumina containing support material, and calcining this mixture. This c...	06/24/1986
4201662	Process for converting sulfur in hydrocarbon to water soluble form A desulfurization process wherein a sulfur-containing hydrocarbon material is contacted with a sulfur oxide compound and an amine, a salt of an amine, or mixtures thereof. The contacting converts the sulfur component of the hydrocarbon material to water s...	05/06/1980

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Class 208/228 - With preliminary treatment of feed