专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2003112012A METHOD OF REMOVING DIOXINS IN EXHAUST GAS OF WASTE TREATING FURNACE AND EQUIPMENT FOR THE SAME 有权
公开(公告)号：JP2003112012A
公开(公告)日：2003-04-15
申请号：JP2001305692
申请日：2001-10-01
申请人： NIPPON STEEL CORP , NITTETSU PLANT DESIGNING CORP
发明人： ONO YOSHIHIRO , KOBAYASHI ATSUSHI , HIGUCHI MASAKAZU
IPC分类号： B01D53/70 , B01D53/34 , B01D53/86 , B01J20/20
摘要： PROBLEM TO BE SOLVED: To provide a method of removing dioxins in exhaust gas of a waste treating furnace which reduces the effluent concentration of the dioxins to a lower level and equipment for the same. SOLUTION: The exhaust gas discharged from the waste treating furnace is cooled and is then subjected to dust collection by a bag filter 1. The dioxins in the exhaust gas after the dust collection are oxidation-decomposed by a catalytic reaction in catalyst beds 3a and further the misty dioxins are adsorbed by an adsorption bed 4a in down stream, by which the dioxins in the exhaust gas of the waste treating furnace are removed.

2. 发明专利

DE3568796D1 PROCESS FOR PRODUCING MESOPHASE PITCH AND CARBON PRODUCTS PRODUCED FROM THE MESOPHASE PITCH 未知
公开(公告)号：DE3568796D1
公开(公告)日：1989-04-20
申请号：DE3568796
申请日：1985-03-29
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： MATSUMOTO MITSUAKI , FURUYAMA MASATOSI , TOMIOKA TADAO , SUNAGO HIROFUMI , HIGUCHI MASAKAZU
IPC分类号： C10C1/19 , C10C3/00 , D01F9/145 , C10C1/00 , C10C1/18
摘要： A mesophase pitch suitable for carbon products, particularly for carbon fibers, which has a mesophase content of at least 40%, preferably at least 60%, and a larger mesophase domain, is produced by adding at least one part by weight of at least one of an alcohol and a phenol to 100 parts by weight of heavy bitumens, subjecting the resulting mixture to pretreatment by heating at least at 250°C, and then subjecting the pretreated mixture to heat treatment until mesophases are formed.

3. 发明专利

JPH05287617A 失效
公开(公告)号：JPH05287617A
公开(公告)日：1993-11-02
申请号：JP11421992
申请日：1992-04-08
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： HIGUCHI MASAKAZU , TOMIOKA NORIO
IPC分类号： D01F9/14 , D02J1/18
摘要： PURPOSE:To provide a production process of high-tenacity pitch carbon fibers reduced in fluffing and with flexibility. CONSTITUTION:This production process is characterized by that the starting pitch is melt-extruded and the pitch fibers are bundled, subjected to infusibilization and heat-treated at 400 to 900 deg.C in an inert-gas atmosphere, then the fibers are subjected to gas-phase opening to separate sticking fibers into each filament, then carbonized and graphitized.

4. 发明专利

JPH03213521A PITCH-BASED CARBON FIBER 失效
公开(公告)号：JPH03213521A
公开(公告)日：1991-09-18
申请号：JP814790
申请日：1990-01-19
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： HAMADA TAKESHI , HIGUCHI MASAKAZU , FURUYAMA MASATOSHI , TOMIOKA NORIO
IPC分类号： D01F9/14 , D01F9/145
摘要： PURPOSE:To obtain pitch-based flexible carbon fiber, having respective specific tensile elastic modulus and compressive breaking strain, excellent in handleability and suitable as prepreg, etc. CONSTITUTION:Pitch-based carbon fiber, obtained by preferably melting pitch for spinning, spinning the melt through a nozzle having >=0.5mm diameter at =40tonf/ mm tensile elastic modulus and a positive value of a differential coefficient {d[R(epsilon)-R(0)]/R(0)}/depsilon for the rate of change in R(epsilon) {[R(epsilon)-R(0)]/R(0)} with respect to epsilon at 0-0.05% epsilon when the electrical resistance in applying a compressive strain in R(epsilon).

5. 发明专利

JPS6274989A PRODUCTION OF NEEDLE COKE 失效
公开(公告)号：JPS6274989A
公开(公告)日：1987-04-06
申请号：JP21518185
申请日：1985-09-30
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： SUNAGO HIROFUMI , HIGUCHI MASAKAZU , TOMIOKA NORIO
IPC分类号： C01B31/02 , C10B57/04
摘要： PURPOSE:To obtain high-quality needle coke capable of providing a graphite electrode which exhibits a small coefficient of thermal expansion, by adding an alcohol to a heavy bituminous substance to cause a thermal reaction and modify the heavy bituminous substance, forming raw coke from the modified heavy bituminous substance and calcining the raw coke. CONSTITUTION:An alcohol (e.g., isopropanol or diethylene glycol) is added to a heavy bituminous substance such as a pitch fraction which has been produced from coal tar, heavy coal liquefaction oil or petroleum cracking residual oil or a mixture thereof. A thermal reaction of the mixture is conducted at 250 deg.C or above to modify the bituminous substance. The unreacted alcohol and formed carbonyl compd. are removed therefrom. The residue is heat-treated to form raw coke. The raw coke is calcined in an electric oven, rotary kiln or the like to obtain intended needle coke. A graphite electrode having excellent spalling resistance in service can be produced from the needle coke.

6. 发明专利

JPH02213752A METHOD AND INSTRUMENT FOR MEASURING STRUCTURE OF OPTICALLY ANISOTROPIC MATERIAL 失效
公开(公告)号：JPH02213752A
公开(公告)日：1990-08-24
申请号：JP3366989
申请日：1989-02-15
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： HIGUCHI MASAKAZU , SUNAGO HIROFUMI , TOMIOKA NORIO , FUJIMOTO KENICHI
IPC分类号： G01N21/21
摘要： PURPOSE:To measure the structure in the orientation direction of the optically anisotropic material by changing the direction of the oscillation plane of polarized light with respect to the anisotropic material and measuring the quantity of the transmitted or reflected light. CONSTITUTION:The reflectivity of graphite having a laminated structure has the anisotropy when, for example, the graphite belonging to the optical negative crystal of a hexagonal system is observed by a reflection method. The max. reflectivity Romega is exhibited in the direction parallel with the direction of lamination of, for example, the face A. The min. reflectivity Repsilon is exhibited in the direction perpendicular to the direction of the lamination. The max. reflectivity Romega is exhibited in the all directions with the face B. The intermediate reflectivity Repsilon' which is between Romega and Repsilon is exhibited on the face C diagonal to the lamination direction. the max. reflectivity Romega is exhibited in the direction parallel with the lamination direction on this face as well. The direction where the max. reflectivity Romega is exhibited indicates always the direction of lamination in such a manner. The structure of the optically anisotropic material is, therefore, measured by changing the direction of the oscillation of the polarized light, measuring the quantity of the transmitted or reflected light, dividing the measuring face to plural picture elements, and detecting the orientability of the structure in accordance with the change in the light quantity of the respective picture elements.

7. 发明专利

JPH01147342A METHOD FOR MEASURING MESOPHASE CONTENT IN MESOPHASE PITCH 失效
公开(公告)号：JPH01147342A
公开(公告)日：1989-06-09
申请号：JP30460487
申请日：1987-12-03
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： HIGUCHI MASAKAZU , SUNAGO HIROFUMI , TOMIOKA NORIO
IPC分类号： G01N21/21
摘要： PURPOSE:To rapidly measure the mesophase content in mesophase pitch by synthesizing at least two sheets of images which are changed in the oscillation direction of polarized light with respect to a sample. CONSTITUTION:The input of the image from the sample 10 is executed by using a television camera 3 directly from a polarization microscope consisting of a microscope 1 of a reflection type, a polarizing plate 2 and a light source 8. The signal from this television camera 3 is stored in a memory 4 for image processing connected to a personal computer 6. The direction of the oscillation of the polarized light is changed by rotating the optical system of an observation device and the resulted images are synthesized. The entire part of the mesophase part with the photograph after synthesis is bright and can be discriminated distinctly from the part which is not a mesophase. The ratio of the area of the bright part is determined by an image analysis, by which the content of the mesophase is measured.

8. 发明专利

JPS6278104A PRODUCTION OF NEEDLE COKE 失效
公开(公告)号：JPS6278104A
公开(公告)日：1987-04-10
申请号：JP21518085
申请日：1985-09-30
申请人： NIPPON STEEL CORP , NIPPON STEEL CHEMICAL CO
发明人： SUNAGO HIROFUMI , HIGUCHI MASAKAZU , TOMIOKA NORIO
IPC分类号： C01B31/02 , C10B57/04 , C10B57/06 , C10C3/02
摘要： PURPOSE:To improve the crystallinity of coke and produce a high-quality needle coke, by adding a phenolic compound to pitch, heat-treating the mixture and calcining the obtained raw coke. CONSTITUTION:Pitch having a softening point of >=25 deg.C and obtained by removing light oil components such as phenols and naphthalenes from bitumen such as heavy liquefied coal oil, distillation residue of petroleum, cracked residue of petroleum, coal tar, etc., is added with >=1wt% phenols and, if necessary, a basic substance (e.g. NaOH). The mixture is heat-treated under pressure at >=250 deg.C for >=5min to obtain mesophase pitch. After removing unreacted phenol from the mesophase pitch, the pitch is converted to raw coke and calcined to obtain the objective needle coke.

9. 发明专利

JPS60208394A PREPARATION OF MESOPHASE PITCH FOR CARBON PRODUCT 失效
公开(公告)号：JPS60208394A
公开(公告)日：1985-10-19
申请号：JP6422884
申请日：1984-03-31
申请人： NIPPON STEEL CORP , SHINNITTETSU KAGAKU
发明人： MATSUMOTO MITSUAKI , TOMIOKA NORIO , SUNAGO HIROFUMI , FURUYAMA MASATOSHI , HIGUCHI MASAKAZU
IPC分类号： D01F9/155 , C01B31/00 , C08L95/00 , C10C3/02 , C10C3/10 , D01F9/14 , D01F9/15
摘要： PURPOSE:To obtain pitch for preparing a high-quality carbon material such as carbon fiber, needle coke, etc., having a lowered softening point, by subjecting pitch to the first heat treatment in the presence of a phenol under specific conditions, forming a mesophase by the second heat treatment. CONSTITUTION:Pitch is subjected to the first heat treatment with >=2wt% phenol at >=250 deg.C (preferably at >=300 deg.C) preferably under pressure for >=15min, and subjected to the second heat treatment to form a mesophase, to give the desired pitch. In the first heat treatment, a catalyst consisting of a basic substance such as a caustic alkali, an alkali carbonate, tar base, etc. is preferably used.

10. 发明专利

JPS60208393A PREPARATION OF PITCH FOR CARBON PRODUCT 失效
公开(公告)号：JPS60208393A
公开(公告)日：1985-10-19
申请号：JP6422784
申请日：1984-03-31
申请人： NIPPON STEEL CORP , SHINNITTETSU KAGAKU
发明人： MATSUMOTO MITSUAKI , TOMIOKA NORIO , SUNAGO HIROFUMI , FURUYAMA MASATOSHI , HIGUCHI MASAKAZU
IPC分类号： D01F9/155 , C01B31/00 , C08L95/00 , C10C3/02 , C10C3/10 , D01F9/14 , D01F9/15
摘要： PURPOSE:To obtain pitch for preparing a high-quality carbon material such as carbon fiber, needle coke, etc., by reacting thermally a heavy bituminous substance with an alcohol, heat-treating the reaction product until a mesophase is formed. CONSTITUTION:A heavy bituminous substance such as coal tar, etc. is thermally reacted with >=1wt% alcohol such as isopropanol, etc. at >=250 deg.C (preferably >=300 deg.C) preferably under pressure for >=5min, and the reaction product is heat- treated until a mesophase is formed, to give the desired pitch. In the thermal reaction, a catalyst consisting of a basic substance such as a caustic alkali, an alkali carbonate, tar base, etc. is preferably used. EFFECT:The titled pitch has a softening point several degrees - tens degrees lower than that of pitch not having undergone thermal reaction with an alcohol.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式