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1. 发明专利

JPH09272875A LIQUIDIZATION OF COAL 失效
公开(公告)号：JPH09272875A
公开(公告)日：1997-10-21
申请号：JP8402996
申请日：1996-04-05
申请人： NIPPON STEEL CORP , MITSUI SEKITAN EKIKA KK
发明人： MOCHIZUKI MICHIHARU , IMADA KUNIHIRO , KAWABATA MUTSUMARO , IGUCHI KENJI , SAKAWAKI KOJI , TAKEDA TETSUYA
IPC分类号： C10G1/06
摘要： PROBLEM TO BE SOLVED: To provide a method for liquidizing coal by liquidizing the coal in the presence of hydrogen gas at a high temperature and at a high pressure, capable of profitably liquidizing the various kinds of coal in a high liquidization yield by controlling the conditions of the liquidization reaction so that the average retention time of the reaction product is controlled within a proper range. SOLUTION: This method for liquidizing coal comprises injecting a tracer having an attenuation action on neutron rays into (A) a coal slurry comprising (A1 ) coal, (A2 ) a solvent for the liquidization and (A3 ) a catalyst for the liquidization at the inlet of (Z) a liquidization reaction tower 17, measuring the concentrations of the tracer with time tracer concentration-measuring devices 22 provided with neutron ray-irradiating members and neutron ray-detecting members 21, 23, 24 disposed at the exits of the towers Z 17, 18, 19, determining the average retention times of the tracer in the towers Z 17, 18, 19, controlling the amounts of the hydrogen gas blown from the lower parts of the towers Z 17, 18, 19 into the towers, simultaneously heating and pressing the coal slurry A to hydrocrack the coal A1 into a liquidated oil, distilling the obtained liquidized oil into a product oil and a heavy oil, producing the solvent A2 from the heavy oil, and subsequently recycling the solvent A2 to the raw material of the coal A.

2. 发明专利

JPH08302357A METHOD OF LIQUEFYING COAL 失效
公开(公告)号：JPH08302357A
公开(公告)日：1996-11-19
申请号：JP11603895
申请日：1995-05-15
申请人： NIPPON STEEL CORP , MITSUI SEKITAN EKIKA KK
发明人： KAWABATA MUTSUMARO , NAMIKI YASUKI , ENDO KOHEI , HANADA YOSHIAKI , SAKAWAKI KOJI , NOGAMI YOSHINOBU , IGUCHI KENJI
IPC分类号： C10G1/06
摘要： PURPOSE: To provide a method of liquefying coal to produce products improved in qualities by subjecting a slurry containing coal, a solvent and a catalyst to a liquefaction reaction to obtain specified mixtures A, B and C, hydroforming mixture C, distilling the hydroformate, recovering a light oil and a middle oil, and recirculating a heavy oil. CONSTITUTION: A solvent 1, a catalyst 2, and coal 3 are mixed with each other in a slurrying tank 4 and the formed slurry is sent together with a reducing gas 5 such as hydrogen to a liquefier 6 to effect a liquefaction reaction under high-temperature and high-pressure conditions. The product is separated into a light oil 12, a middle oil 13, and a heavy oil 14 in gas/liquid separators 7-11, and the obtained liquid is separated into a heavy oil 16 and residues 17 in a vacuum distillation tower. A mixture of the light oil 12, the middle oil 13, and the heavy oil 16 are fed together with a reducing gas into a solvent hydrogenation towers 18 and 19 and reformed to obtain a mixture of a reformed light oil 12' with a reformed middle oil 13' and a reformed heavy oil 16'. The mixed modified oil is separated in atmospheric distillation towers 20, 21 and 22 to recover product light oils 23 and 24 and a product middle oil 25, and the reformed heavy oil 26 is hydrogenated to obtain a hydrogenation product recirculated as a solvent for coal slurrying.

3. 发明专利

JPH08269458A PREPARATION OF COAL SLURRY 失效
公开(公告)号：JPH08269458A
公开(公告)日：1996-10-15
申请号：JP7517095
申请日：1995-03-31
申请人： AGENCY IND SCIENCE TECHN , MITSUI SEKITAN EKIKA KK , NIPPON STEEL CORP
发明人： SAKAKI TAKESHI , SHIBATA MASAO , HIROSUE HIDEHARU , SAKAWAKI KOJI , NOGAMI YOSHINOBU , IGUCHI KENJI , KAWABATA MUTSUMARO , ENDO KOHEI
IPC分类号： C10G1/00 , C10G1/06
摘要： PURPOSE: To obtain a coal slurry for coal liquefaction which enables stable and efficient transport and efficient coal liquefaction without decreasing the coal concn. by decreasing the viscosity. CONSTITUTION: A coal slurry is prepd. by pulverizing coal to give a powder contg. 90wt.% or higher 100 mesh undersize, reducing the water content of the powder to 85% or lower of the equilibrium moisture of coal, and mixing the powder with a coal liquefaction solvent and a coal liquefaction catalyst.

4. 发明专利

JPH11315285A PREPARATION OF COAL SLURRY 失效
公开(公告)号：JPH11315285A
公开(公告)日：1999-11-16
申请号：JP12454898
申请日：1998-05-07
申请人： NIPPON STEEL CORP , MITSUI SEKITAN EKIKA KK
发明人： KAWABATA MUTSUMARO , IMADA KUNIHIRO , SAKAWAKI KOJI , IGUCHI KENJI
IPC分类号： C10G1/00
摘要： PROBLEM TO BE SOLVED: To provide a method for preparing a coal slurry having a reduced viscosity in a coal liquefaction process by adding a dispersant capable of reducing the viscosity of the slurry to it. SOLUTION: The viscosity of a coal slurry can be reduced in preparing the slurry by mixing a dispersant 27 or a dispersant soln. with coal, crushing the resultant mixture, and dehydrating it, or by mixing under stirring a dispersant with crushed dried coal, or by spraying a dispersant over crushed dried coal and mixing the sprayed coal with a solvent and a catalyst.

5. 发明专利

JPH10259383A COAL LIQUEFACTION PROCESS 失效
公开(公告)号：JPH10259383A
公开(公告)日：1998-09-29
申请号：JP6837997
申请日：1997-03-21
申请人： NIPPON STEEL CORP , MITSUI SEKITAN EKIKA KK
发明人： MOCHIZUKI MICHIHARU , IMADA KUNIHIRO , KAWABATA MUTSUMARO , IGUCHI KENJI , NOGAMI YOSHINOBU , SAKAWAKI KOJI , OKADA YASUO
IPC分类号： C10G1/06 , C10G1/08
摘要： PROBLEM TO BE SOLVED: To achieve a high liquefaction yield in the coal liquefaction reaction in a coal liquefaction process by optimally adjusting the average liq.-phase dwell times in liquefaction reaction towers and to achieve a high liquefaction yield while reducing the running cost by optimally adjusting the liquefaction reaction temp. and the amt. of a catalyst added under an average liq.-phase dwell time maintained optimally for each kind of coal. SOLUTION: In a coal liquefaction process wherein an oil obtd. by heating a slurry comprising coal. a coal liquefaction solvent, and a coal liquefaction catalyst under pressure in the presence of hydrogen, distilling the resultant oil, and hydrogenating a part of the product oil to recirculate, a high liquefaction yield is achieved at a low cost by measuring average liq.-phase dwell times in liquefaction reaction towers by a neutron decay method, by adjusting the gas/slurry ratio and the liquefaction temp. so that optimal average liq.-phase dwell times in each liquefaction tower and in all the liquefaction towers are obtd., and by adjusting the liquefaction reaction pressure, the amt. of catalyst added, and the coal slurry concn. each to an optimal value.

6. 发明专利

JP2003147371A METHOD FOR REFORMING HEAVY HYDROCARBON 审中-公开
公开(公告)号：JP2003147371A
公开(公告)日：2003-05-21
申请号：JP2001346724
申请日：2001-11-12
申请人： NAT INST OF ADV IND & TECHNOL , MITSUI SEKITAN EKIKA KK
发明人： NAGAISHI HIROSHI , SASAKI MASAHIDE , IKEDA KOJI , SAKAWAKI KOJI , IGUCHI KENJI
IPC分类号： C10G1/04
摘要： PROBLEM TO BE SOLVED: To provide a method, for reforming a heavy hydrocarbon, which can give a product decomposable at a high decomposition rate in hydrocracking and thermal decomposition and convertible at a high yield to a fuel oil, and a reformate obtained by the method. SOLUTION: The method comprises mixing 2-20 pts.wt. of a solvent with 1 pt.wt. of a heavy hydrocarbon and subjecting the thus-obtained mixture to a heat treatment at 250-800 deg.C in a substantially inert gas atmosphere.

7. 发明专利

JP2891648B2 失效
公开(公告)号：JP2891648B2
公开(公告)日：1999-05-17
申请号：JP7517095
申请日：1995-03-31
申请人： KOGYO GIJUTSU INCHO , MITSUI SEKITAN EKIKA KK , SHINNIPPON SEITETSU KK
发明人： SAKAKI TAKESHI , SHIBATA MASAO , HIROSUE HIDEHARU , SAKAWAKI KOJI , NOGAMI YOSHINOBU , IGUCHI KENJI , KAWABATA MUTSUMARO , ENDO KOHEI
IPC分类号： C10G1/00 , C10G1/06

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