序号 专利名 申请号 申请日 公开(公告)号 公开(公告)日 发明人
101 Low viscosity, high carbon yield pitch product US10409658 2003-04-07 US06827841B2 2004-12-07 Melvin D. Kiser; David C. Boyer
A low viscosity, high coking value petroleum tar material having a high coking value as compared to standard petroleum tars and containing at least one biodiesel material dissolved therein, and a method for producing such material, are disclosed.
102 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.
103 Coal tar pitch blend having low polycyclic aromatic hydrocarbon content and method of making thereof US513329 1995-08-10 US5746906A 1998-05-05 E. Ronald McHenry; William E. Saver
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. A petroleum pitch material is also selected according to its softening point, QI, coking value and sulfur content. The coal tar pitch is distilled to a uncharacteristically high softening point which is then mixed with the petroleum pitch to a desired softening end point. The material retains significant QI and coking value characteristics of pure coal tar pitch particularly for use in Soderberg-type anodes for aluminum smelting as well as electric arc furnace electrodes. PAH emissions, and more specifically B(a)P equivalent emissions, are all reduced by approximately 40%.
104 Demetallation - high carbon conversion process, apparatus and asphalt products US594627 1996-02-02 US5728291A 1998-03-17 Charles B. Miller; Howard F. Moore; David P. Wesley; Robert H. Wombles; Carlton H. Jewitt; Roger E. Hayner; Willian H. Gilkerson, Sr.; Charles R. Gannon
In this combination process, solvent deasphalting (SDA) concentrates metals in the bottoms product which can be blended to asphalt as a product or for sending to the Calderon or similar process and outputs a high carbon (4+ concarbon) feed which is readily cracked to valuable transportation fuels by an RCC.RTM. cracking unit (or a conventional FCC with catalyst cooler and oxygen to the regenerator so that it acts as an RCC). The Rose process can be used instead of SDA to save utilities. By this invention, heavy crude can be converted to valuable transportation fuels and asphalt product, and catalyst make-up can be sharply reduced in the RCC or FCC unit because metals (asphaltenes and porphyrins) are removed before cracking. Novel asphalt compositions and blending are also disclosed. Asphalt from the SDA can preferably be blended with lube plant extract (or other aromatic extract) to produce specific asphalts meeting new SHRP specifications for paving.
105 Demetallation-High carbon conversion process, apparatus and asphalt products US286714 1994-08-04 US5601697A 1997-02-11 Charles B. Miller; Howard F. Moore; David P. Wesley; Robert H. Wombles; Carlton H. Jewitt; Roger E. Hayner; Willian H. Gilkerson, Sr.; Charles R. Gannon
In this combination process, solvent deasphalting (SDA) concentrates metals in the bottoms product which can be blended to asphalt as a product or for sending to the Calderon or similar process and outputs a high carbon (4+ concarbon) feed which is readily cracked to valuable transportation fuels by an RCC.RTM. cracking unit (or a conventional FCC with catalyst cooler and oxygen to the regenerator so that it acts as an RCC). The Rose process can be used instead of SDA to save utilities. By this invention, heavy crude can be converted to valuable transportation fuels and asphalt product, and catalyst make-up can be sharply reduced in the RCC or FCC unit because metals (asphalteries and porphyrins) are removed before cracking. Novel asphalt compositions and blending are also disclosed. Asphalt from the SDA can preferably be blended with lube plant extract (or other aromatic extract) to produce specific asphalts meeting new SHRP specifications for paving.
106 Method for the preparation of pitches for spinning carbon fibers US603203 1984-04-23 US4606808A 1986-08-19 Yasuhiro Yamada; Takeshi Imamura; Masao Shibata; Seiji Arita; Hidemasa Honda
The invention provides a method for the preparation of a pitch spinnable into pitch filaments as a precursor of carbon fibers starting from a pitch material such as coal tar and coal tar pitch. Different from the conventional procedure involving hydrogenation of the starting pitch, the starting pitch in the inventive method is first heated together with an aromatic oil, preferably, in the presence of a cracking catalyst such as silica-alumina and zeolite at 350.degree. to 500.degree. C. for 10 to 60 minutes under no pressurization with hydrogen and, after removal of insoluble materials, then heated at a temperature of 430.degree. to 600.degree. C. The thus obtained pitch for spinning has good spinnability and the carbon fibers prepared from the pitch have a unique microscopic structure and excellent physical properties exceeding by far the conventional pitch-based carbon fibers and approximating the HP-grade carbon fibers prepared from polyacrylonitrile fibers.
107 Removal of solid contaminants from tar and tar-like products US553786 1975-02-27 US3992281A 1976-11-16 Dirk Christoffel Benade
A method of separating tar from solid contaminant including the steps of dissolving the tar in a compatible solvent; and separating dissolved tar from solid material. Preferably, contaminated tar is caused to flow in a stream; solvent is introduced into the stream of contaminated tar; the contaminated tar and the solvent are caused to flow together a predetermined distance to permit dissolution of tar; and a diluted tar fraction is separated from a solid contaminant fraction.
108 Process for producing orientation in mesophase pitch by rotational motion relative to a magnetic field and carbonization of the oriented mesophase US588845 1975-06-20 US3991170A 1976-11-09 Leonard Sidney Singer
Mesophase pitches wherein the planes of the mesophase portions of the pitch are substantially aligned in a single parallel direction, and the c-axes of said planes are substantially aligned in a single parallel direction, are produced by subjecting a mesophase pitch in its molten state to rotational motion relative to a surrounding magnetic field about an axis perpendicular to the direction of that field.
109 Asphalt compositions US4888570 1970-06-15 US3810771A 1974-05-14 BEUTHER H; HENKE A
AN IMPROVED ASPHALT PAVING COMPOSITION IS OBTAINED BY ADDING TO A PETROLEUM ASPHALT COAL WHICH HAS BEEN SOLVENT TREATED IN THE PRESENCE OF HYDROGEN.
110 Asphalt compositions and process for preparing same US31376163 1963-10-04 US3374104A 1968-03-19 BAUM LESTER A H; LEONARD HENSCHEL
111 Petroleum-derived pitch US44063765 1965-03-17 US3330759A 1967-07-11 LEONARD HENSCHEL; BAUM LESTER A H
112 Coal tar paving compositions and process for preparing them US28214363 1963-05-21 US3304191A 1967-02-14 BARRETT RICHARD C
113 Asphalt blending system US33386163 1963-12-27 US3251508A 1966-05-17 HENRY BORYS
114 Asphalts of improved resistance to flow US85967859 1959-12-15 US3093573A 1963-06-11 CORBETT LUKE W
115 Cold-laid bituminous paving materials US81101059 1959-05-05 US3074807A 1963-01-22 DORIUS CARL B; JONES GEORGE M; MORSE PARK L
116 Alkylated asphalt composition containing lubricating oil and alkylated asphaltenes US74464558 1958-06-26 US2970099A 1961-01-31 ILLMAN JOHN C
117 Process for the preparation of age resistant asphalt compositions US52833955 1955-08-15 US2904494A 1959-09-15 GRIFFIN RAYMOND L
118 Paving asphalt composition and a process of making it US52011355 1955-07-05 US2877128A 1959-03-10 HARDMAN HARLEY F
119 Improved asphalt compositions and method of producing same US26218351 1951-12-17 US2691621A 1954-10-12 GAGLE DUANE W
120 Bituminous materials and the method of preparing the same US23394651 1951-06-27 US2658026A 1953-11-03 MACLAREN FREDERICK H; KALINOWSKI MATHEW L
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