Class 208/42 - Tar feed

Subclass of Class 208 - Mineral oils: processes and products
Definition: Processes wherein material distilled is a tar.
No. of patents: 32
Last issue date: 12/27/2011

Number	Title	Issue Date
8083930	VPS tar separation A process is described for producing deasphalted steam cracker tar comprising feeding steam cracker tar to a vacuum pipestill (VPS) including a flash zone separated from a zone comprising trays by at least one annular entrainment ring and obtaining as an overheads a...	12/27/2011
7465387	Coal tar and hydrocarbon mixture pitch and the preparation and use thereof A method of making a carbon/graphite product using a coal tar pitch having a softening point in the range of about 150° C. to 250° C. Also, a carbon/graphite product having a softening point in the range of about 150° C. to 250° C. A method of making mesophase p...	12/16/2008
7341656	Continuous oxidation and distillation process of heavier hydrocarbon materials The present invention provides a way to process heavier hydrocarbons in a relatively low cost and low pressure process using a combination of superheated steam and at least one reaction gas to i) promote oxidation and thermal reaction of heavier hydrocarbons, while ...	03/11/2008
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
7220348	Method of producing high softening point pitch The present invention provides a way to increase the softening point of heavier hydrocarbons in a relatively low cost and low pressure process using superheated steam to i) increase the carbon yield of the heavier hydrocarbons, while simultaneously ii) removing vola...	05/22/2007
7150822	Five degrees for separation 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 metal, pref...	12/19/2006
7066997	Coal tar and hydrocarbon mixture pitch and the preparation and use thereof A method of making the saturated aircraft brake preform using a coal tar pitch having a softening point in the range of about 160° C. to 240° C. Also, a product having natural rubber in the formulation and the method of making the product using a coal tar pitch ha...	06/27/2006
7033485	Coal tar and hydrocarbon mixture pitch production using a high efficiency evaporative distillation process Described are methods that utilize high efficiency evaporative distillation to make a high softening point coal tar pitch, a quinoline insoluble-free and ash-free coal tar pitch having a desired softening point, and a mesophase coal tar pitch. Each of the methods us...	04/25/2006
7008526	Processes for producing coke, artificial graphite and carbon material for negative electrode of non-aqueous solvent type secondary battery and pitch composition used therefor When a pitch composition prepared by mixing 100 parts by weight of mesophase pitch with 10 to 1,000 parts by weight of coal tar pitch, is heat-treated at a temperature of 500° C. or higher, it is possible to produce a high-density coke at a high yield while avoidin...	03/07/2006
6464856	Separation of tars, oils and inorganic constituents from oil bearing sands or shales An improved process for the total separation and recovery of four constituents, namely, 1) insoluble pitches and tars also known as asphaltenes, 2) a kerosene based oil fraction, 3) clays and silts of less than 80 μm mesh and 4) sands of greater than 80 ...	10/15/2002
6352637	High coking value pitch A high coking value pitch with a relatively low softening point is disclosed. A pitch is distilled or thermally processed to produce an intermediate pitch with an increased coking value and relatively high softening point, then blended with a cutter solve...	03/05/2002
6245216	Method for fluidizing tars Process for the preparation of an aqueous tar suspoemulsion by mixing a mixture including (a) a viscous tar composition formed from a tar, from inorganic solids and, optionally, from water, (b) water (W), (c) a surface-active agent (SA) exhibiting an HLB ...	06/12/2001
5843298	Method of production of solids-free coal tar pitch A process for converting coal tar containing quinoline-insoluble particles (Q.I.) produces a substantially Q.I.-free coal tar pitch and a separate, Q.I.-containing coal tar pitch. Dehydrated coal tar, soft coal tar pitch or hard coal tar pitch are subject...	12/01/1998
5795464	Conversion of the organic component from tar sands to lower boiling products A process for the thermal conversion of the organic component associated with tar sands to lower boiling, higher value products. The conversion is achieved by subjecting the organic component containing from about 1 to 20 wt. % native solids to elevated t...	08/18/1998
5746906	Coal tar pitch blend having low polycyclic aromatic hydrocarbon content and method of making thereof A coal tar pitch/petroleum pitch blend is disclosed together with a method of making the same. In accordance with the invention, a crude coal tar material is selected according to specific properties including QI, specific gravity, water and ash content. ...	05/05/1998
5534134	Low PAH pitch and process for same Described are preferred pitches which comprise a blend of coal tar pitch, petroleum pitch and gilsonite pitch, and preferred processes and compositions which can be used to form such pitches. The pitches have substantially reduced contents of polyaromatic...	07/09/1996
5507938	Flash thermocracking of tar or pitch A process for producing high-quality pitches comprising atomizing a preheated feed material of carbonaceous tar and/or pitch, forming an aerosol, contacting the aerosol in a reaction vessel with a flowing, non-reactive gas atmosphere for less than about 1...	04/16/1996
5326457	Process for making carbon electrode impregnating pitch from coal tar Carbon electrode impregnating pitch is made from coal tar by centrifugation of the coal tar to remove particulates, followed by milling and distilling the remaining material....	07/05/1994
5314609	Process for preparing debenzolized tar and low-benzene centrifuged tar sludge Crude coal tar is distilled in the form produced in a coke plant. The distillation tower contains a rectification section to retain naphthalene with the other components heavier than benzene. The benzene is removed overhead....	05/24/1994
5266184	Process for increasing pitch yield from coal tar Described is a preferred process for obtaining an increased pitch yield from the distillation of crude coal tar material. The process includes treating a crude coal tar material by reaction with formaldehyde, followed by distillation of the coal tar to af...	11/30/1993
5128021	Pitch from coal tar pitch, method of its production, as well as application of such pitch material A novel pitch material made from coal tar pitch has: a) mesophase content of ࣘ2%, b) content of toluene-insolubles (ଲ-resin) between 58 and 75%, c) content of quinoline-insolubles of	07/07/1992
5120424	Binder pitch for an electrode and process for its manufacture The disclosed bonding pitch for electrodes, having a softening point C.I.A. comprised between 80° C. and 150° C., a concentration of quinoline-insoluble substances higher or equal to 4% by weight, a concentration of ଱+ଲ resins comprised betw...	06/09/1992
4997542	Impregnation pitch with improved filterability and process for its manufacture An impregnation pitch having a Kraemer-Sarnow softening point ranging from about 60° C. to 80° C., a content of quinoline-insoluble substances less than or equal to 7% by weight, and a filterability index greater than or equal to 4.5. A process for the ...	03/05/1991
4986895	Process for treating coal tar or coal tar pitch Pitch substantially free from primary and secondary QI components and solids comprising secondary QI components are prepared by centrifuging coal tar or coal tar pitch at a high temperature, heat-treating the separated supernatant liquid and centrifuging ...	01/22/1991
4874502	Method of purifying coal tars for use in the production of carbon products The unwanted components from coal tars should be removed at a certain stage of the process for producing homogeneous spinning pitches which are suitable for use in the production of high-performance carbon fibers from coal tars. The unwanted components ca...	10/17/1989
4664774	Low solids content, coal tar based impregnating pitch A novel coal tar based, low solids content, pitch is produced by oxidizing a selected coal tar distillation fraction with air to oxygen at elevated temperatures. This pitch is applicable to end use in which low solids content is desirable. Specifically it...	05/12/1987
4640761	Process for preparing pitch Pitch free from quinoline insoluble components is prepared by heat-treating coal tar or coal tar pitch in the absence or in the presence of carbonaceous particles and centrifuging at a high temperature the reaction product resulting from the heat treatmen...	02/03/1987
4404114	Acrylate/silicate corrosion inhibitor An aluminum corrosion inhibitor composition comprising an aqueous and/or alcohol solution of a polymerizable-acid graft copolymer plus at least one organic and/or inorganic silicate, together with a method for using such composition....	09/13/1983
4349418	Production of methylnaphthalenes and tar bases including indole Methylnaphthalenes, indole and other tar bases are recovered from a base-extracted coal tar distillation fraction. In one form, an aqueous salt solution of pH 0.5-3 extracts other tar bases from the starting material, and thereafter both products are reco...	09/14/1982
4219405	Method of continuously producing coke Continuous production of coke by pyrolysis of a hydrocarbon mixture containing petroleum tar, coal tar pitch or pyrolysis tars in which the hyrocarbon mixture and recycled condensate is heated in a preheater at a rate to increase the mesophase content of ...	08/26/1980
4199434	Feedstock treatment A pyrolysis fuel oil is treated by soaking in the presence of sulfur for a period of time sufficient to react the highly unsaturated compounds present in the oil, followed by heating the soaked fuel oil at a temperature of from 850° F. to 1100° F. and a...	04/22/1980
4032430	Process for producing carbon fibers from mesophase pitch An improved process for producing pitch which has been transformed, in part, to a liquid crystal or so-called "mesophase" state. According to the process, pitch of a given mesophase content, suitable for producing carbon fibers, is produced in substantial...	06/28/1977

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Class 208/42 - Tar feed