| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Process for producing mesophase pitch by hydrogenation of high-temperature coal tar | US14372006 | 2012-04-06 | US09994775B2 | 2018-06-12 | Hongmei Zhao; Jieshan Qiu; Kam Shing Philip Siu; Baoming Li; Junde Steve Lu; Nan Xiao |
| A process for producing mesophase pitch from high-temperature coal tar comprises: removing salts and quinoline insoluble fraction from a high-temperature coal tar to obtain a decant oil; using the decant oil as a hydrogenation feedstock, or pre-distilling the decant oil to obtain a residue with a boiling point higher than 230 and formulating the residue into a hydrogenation feedstock; catalytic hydrorefining the hydrogenation feedstock to obtain a hydrofined oil; distilling the hydrofined oil to obtain hydrogenated pitch; and subjecting the hydrogenated pitch to the thermal polymerization to obtain the mesophase pitch. The process has features such as an easily controllable degree of hydrogenation, complete removal of impurities, good raw material flowability, not tending to form the carbon deposition and the coking during the process, and not tending to jam the reactor. The product has a high content of mesophase pitch, a low softening point and a low impurity content. | ||||||
| 82 | METHOD OF PREPARING HIGH SOFTENING POINT PITCH AND HIGH SOFTENING POINT PITCH PREPARED THEREBY | US15300703 | 2016-04-22 | US20170175001A1 | 2017-06-22 | Sung Ho YOON; Seong Hwa HONG; Suk Jun YU |
| Provided are a method of preparing a high softening point pitch and the high softening point pitch prepared thereby, in which a polyene radical intermediate is formed, and an alkylaromatic radial material is linearly linked to the polyene radical intermediate in a benzyl or methylene form to be polymerized. The method includes performing heat treatment by adding a compound, which is able to a polyene radical intermediate, to 1- to 4-ring alkylaromatic condensates to produce a basic pitch, and performing vacuum heat treatment for the basic pitch. | ||||||
| 83 | METHOD OF MANUFACTURING REFINED PITCH | US14973801 | 2015-12-18 | US20170174999A1 | 2017-06-22 | HSIN-PING CHANG; CHUEN-MING GEE; PAI-LU WANG; CHING-JANG LIN |
| A method of manufacturing a refined pitch includes the steps of providing a pitch and performing a heated blending process thereon to produce a pitch solution; adding an aromatic additive to the pitch solution; adding an aliphatic additive to the pitch solution; performing a quiescent sedimentation process on the pitch solution; and separating a liquid part from the pitch solution. Therefore, the method allows a concentrated mesophase pitch to be manufactured quickly and by heat processing. | ||||||
| 84 | Pavement repair system utilizing solid phase autoregenerative cohesion | US14732296 | 2015-06-05 | US09481967B2 | 2016-11-01 | William B. Coe |
| A method for repairing asphalt pavement involves passing an emitter over a surface of a damaged asphalt pavement comprising aged asphalt, wherein the emitter comprises a birefringent material through which the electromagnetic radiation generated by the emitter passes, wherein the emitter generates electromagnetic radiation having a wavelength of from about 2 microns to 1 millimeter, the radiation penetrating into the pavement to a depth of at least 2 inches, wherein a temperature differential throughout a top two inches of pavement is 100° F. or less, wherein a highest temperature in the top two inches of pavement does not exceed 300° F., and wherein a minimum temperature in the top two inches of pavement is at least 200° F. | ||||||
| 85 | Turbulent mesophase pitch process and products | US13458434 | 2012-04-27 | US09376626B1 | 2016-06-28 | Donald P. Malone; Donald M. Lee |
| A process for producing mesophase pitch using a long tube reactor is disclosed. An aromatic rich feed, preferably a petroleum pitch having a softening point above 100° C., is preheated to a temperature above its softening point and mixed with a vapor, preferably steam, in a long tubular reactor under intense mixing conditions, preferably fully developed turbulent flow such as mist annular flow, with a residence time at least an order of magnitude less than prior art processes and preferably less than 10 seconds. Preferably the reactor is heated by electric resistance or induction heating or by immersion in a heated fluid or in a fired heater. Mesophase pitch with a high coking value and a surprisingly low quinolone insoluble content is produced. The byproducts of thermal polymerization and thermal dealkylation have less than 50% as much olefin and diene content as compared to similar byproducts from prior art processes. | ||||||
| 86 | BINDER FOR METALLURGICAL COKE AND A PROCESS FOR MAKING SAME | US14312952 | 2014-06-24 | US20150368745A1 | 2015-12-24 | Jagannathan Govindhakannan |
| A binder for making metallurgical coke and a process for making the binder. The binder is thermally hydrocracked pitch which has been de-ashed. The binder may be mixed with low rank bituminous coal, heated to make coke which is acceptable as a metallurgical coke. The thermally hydrocracked pitch may be de-ashed by mixing with a solvent, and separating the insoluble portions from the soluble portions using a centrifuge. The soluble portions may be separated from the solvent, for example, in a fractionating section, and used as the binder with poor coking coal to make metallurgical coke. | ||||||
| 87 | PAVEMENT REPAIR SYSTEM UTILIZING SOLID PHASE AUTOREGENERATIVE COHESION | US14732296 | 2015-06-05 | US20150267360A1 | 2015-09-24 | William B. Coe |
| A method for repairing an aged or damaged asphalt pavement is provided. The method involves preparing a surface of the aged or damaged asphalt pavement by filling in deviations from a uniform surface plane with dry aggregate and compacting the dry aggregate; applying a reactive asphalt emulsion to the prepared surface; and passing an emitter over the prepared pavement, wherein the emitter generates electromagnetic radiation having a wavelength of from about microns to 1 mm that penetrates into the pavement to a depth of at least 2 inches. The asphalt pavement is repaired by disturbing voids and interstices in the damaged pavement without dehydrogenation of the asphalt, such that oligomers present in the aged asphalt are linked together into longer polymer chains to improve ductility of the aged asphalt. | ||||||
| 88 | PAVEMENT REPAIR SYSTEM UTILIZING SOLID PHASE AUTOREGENERATIVE COHESION | US14629278 | 2015-02-23 | US20150167252A1 | 2015-06-18 | William B. Coe |
| A pavement repair system is provided utilizing Solid Phase Auto Regenerative Cohesion (SPARC) Homogenization by Liquid Asphalt Oligopolymerization (HALO) technologies. The SPARC-HALO system is suitable for use in repairing asphalt pavement, including pavement exhibiting a high degree of deterioration (as manifested in the presence of potholes, cracks, ruts, or the like) as well as pavement that has been subject to previous repair and may comprise a substantial amount of dirt and other debris (e.g., chipped road paint or other damaged or disturbed surfacing materials). The HALO system is suitable for rejuvenating aged asphalt, thereby improving properties of the paving material. | ||||||
| 89 | PROPERTY PREDICTION FOR ASPHALTS FROM BLENDED SOURCES | US13723399 | 2012-12-21 | US20140180650A1 | 2014-06-26 | Pavel Kriz; Lyle Edwin Moran; John H. Brownie |
| Methods are provided for predicting the properties of an asphalt fraction that contains two or more asphalt components based on measurements of the viscosity for the asphalt fraction. Based on the measured viscosity, a virtual cut point is determined for a virtual asphalt blend that has the same viscosity (to within a tolerance value) as the measured viscosity for the asphalt fraction. The virtual cut point is then used to determine a variety of predicted property values for the asphalt fraction. Optionally, the predicted property values can be used to adjust the actual cut point for the distillation or separation process used for forming the asphalt fraction. | ||||||
| 90 | Methods of Upgrading Asphaltene Compositions | US13310395 | 2011-12-02 | US20120151834A1 | 2012-06-21 | Willem P. C. Duyvesteyn; Julian Kift |
| Methods for pyrolyzing asphaltene material includes providing a composition including from 50 to 90 wt % asphaltene material and from 50 to 10 wt % inert material, and pyrolyzing the composition. The presence of the inert material can help to ensure that the asphaltene material does not interfere with the pyrolyzing process and equipment. Method of forming asphaltene pellets can also be used in order to improve asphaltene pyrolysis. | ||||||
| 91 | Coal tar and hydrocarbon mixture pitch and the preparation and use thereof | US11388238 | 2006-06-20 | US20060230982A1 | 2006-10-19 | Thomas Golubic; Kenneth Krupinski; William Saver; David Snyder; Robert Wombles |
| 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 pitch is formed from quinoline insoluble free coal tar pitch distillate from a high efficiency evaporative distillation process. | ||||||
| 92 | Coal tar and hydrocarbon mixture pitch production using a high efficiency evaporative distillation process | US09853372 | 2001-05-11 | US20020185411A1 | 2002-12-12 | William E. Saver; E. Ronald McHenry |
| 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 uses a feed coal tar pitch having a softening point in the range of 70null C. to 160null C. The methods may be carried out using appropriate conventional distillation equipment, a wiped film evaporator, or a thin film evaporator. | ||||||
| 93 | High coking value pitch | US09467327 | 1999-12-20 | US06352637B1 | 2002-03-05 | Patricia K. Doolin; Melvin D. Kiser; Robert H. Wombles |
| 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 solvent of a liquid hydrocarbon stream to form a product pitch. The process may be used to increase the coking value of either petroleum or coal tar pitch. Preferably the cutter solvent is methylnaphthalene, or a highly aromatic, low viscosity oil or similar aromatic rich stream having a substantially lower boiling point than the intermediate pitch product. | ||||||
| 94 | Process to refine petroleum residues and sludges into asphalt and/or other petroleum products | US933638 | 1997-09-19 | US5922189A | 1999-07-13 | Benjamin Santos |
| A process for significantly decreasing processing time, reducing capital costs, increasing yield, improving quality, and improving the safety of refining petroleum residues and sludges generated by the oil producers, refineries and re-refiners comprising the steps of heating under vacuum the petroleum residues and sludges with steam or inert gas injection or both until a temperature ranging from between 680.degree. F. to 1000.degree. F. is attained and holding the mixture at this temperature for a short residence time of from less than an hour to abut 6 hours while vacuum and sparging are being carried out to generate asphalt. Volatile products are condensed to produce fuel, waxy oil and can be further processed to produce refined fuel, wax and dewaxed oil. | ||||||
| 95 | Production process of carbonaceous material and battery | US928262 | 1997-09-12 | US5910383A | 1999-06-08 | Yoshihiko Hase; Hidetoshi Morotomi; Hiromi Okamoto; Syoji Komura; Yasuyuki Takigawa; Shigeyuki Hirano; Tetsuo Shiode |
| A process is provided for the production of a carbonaceous material. The process comprises the following steps: subjecting a vacuum distillation residual pitch to heat treatment until the content of quinoline-insoluble components thereof becomes 50 to 85 wt. %, whereby the pitch is converted into a mesophase pitch; grinding the thus-obtained mesophase pitch into fine particles having an aspect ratio not greater than 2; subjecting the thus-ground product to oxidation treatment; and subjecting the thus-oxidized product to carbonization or graphitization treatment. A lithium ion secondary battery comprises a negative pole made of the carbonaceous material. | ||||||
| 96 | Process for deasphalting residua (HEN9511) | US502955 | 1995-07-17 | US5714056A | 1998-02-03 | David G. Hammond; Mitchell Jacobson; John F. Pagel; Martin C. Poole; Willibald Serrand |
| 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 of hot particles. | ||||||
| 97 | Process for producing carbon materials | US330607 | 1994-10-28 | US5494567A | 1996-02-27 | Toshio Tamaki |
| A process for producing an optically isotropic reformed pitch useful for various carbon materials is provided. This process comprises mixing a pitch having a ratio of aromatic hydrocarbon fa of more than 0.6 with a strong Lewis acid and a co-solvent so as to give a mol ratio of the said Lewis acid to the said pitch in the range of 0.3.about.5.0 and a mol ratio of the said co-solvent to the said pitch in the range of ratio of 2.5.about.50, reacting the mixture at a temperature of 100.degree..about.300.degree. C. and removing the Lewis acid and the co-solvent from the reaction product. Meso-Carbon microbeads having a uniform diameter of 20 .mu.m or less can be produced at a high yield of 60% or more by heat treating the said reformed pitch at 200.degree..about.380.degree. C. to produce the optically anisotropic small spheres and separating them from an optically isotropic matrix. | ||||||
| 98 | Process for isolating mesophase pitch | US334647 | 1994-11-07 | US5489374A | 1996-02-06 | H. Ernest Romine; W. Mark Southard; Edward J. Nanni; Mark W. Carel |
| The present invention provides a process for obtaining a very clean mesophase pitch from isotropic pitch. This invention utilizes a solvent fractionation process which does not involve the process steps, yield loss and waste generation associated with fluxing and filtering the isotropic pitch. Additionally, this invention provides a liquid/liquid extraction process that avoids the solids handling and the high temperatures and pressures of supercritical fluid extraction. Finally, this invention controls the hardness of the mesophase product. | ||||||
| 99 | Upgrading of bitumen asphaltenes by hot water treatment | US42033 | 1993-04-02 | US5316659A | 1994-05-31 | Glen B. Brons; Michael Siskin; Kazimierz O. Wrzeszczynski |
| A process for upgrading bitumen asphaltenes obtained from tar sands to hydrocarbons which comprises contacting the bitumen with a deasphalting solvent to yield a deasphalted oil and a residual solid asphaltene, separating the residual solid asphaltene from the deasphalted oil and treating the solid asphaltene fraction with superheated water at temperatures of from 300.degree. to 425.degree. C. | ||||||
| 100 | Process for increasing meso phase contents in pitch | US403144 | 1989-09-01 | US4976845A | 1990-12-11 | Peter Oerlemans; Rolf Marrett; Armin Eckert; Klaus Altfeld |
| A process for increasing the content of mesophase in a pitch includes using a high molecular aromatic fraction based on a material selected from the group consisting of coal tar, crude oil and their mixture in molten form, thermally treating the fraction in form of a thin, continously moving film, and removing volatile components by degassing during the thermal treatment. The process distinguishes in using a high molecular aromatic fraction which may contain mesophase, shaping the fraction continuously mechanically to a thin film with a layer of thickness of between substantially 0.007 and 2 cm, successively mechanically forcedly transporting the film with the use of shear forces through at least one homogenization zone and one degassing zone, performing a mechanical homogenization of the film in the homogenization zone, performing a removal of readily volatile components in the degassing zone, and maintaining the temperature of the film in the homogenization zone and in the degassing zone in the region of between 320.degree. C. and 470.degree. C. | ||||||
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