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1. 发明专利

JPH11323349A COAL LIQUEFACTION 失效
公开(公告)号：JPH11323349A
公开(公告)日：1999-11-26
申请号：JP14828898
申请日：1998-05-14
申请人： MITSUI SEKITAN EKIKA KK , NIPPON STEEL CORP
发明人： OKADA YASUO , IGUCHI KENJI , NOGAMI YOSHINOBU , IMADA KUNIHIRO , MOCHIZUKI MICHIHARU
IPC分类号： C10G1/00 , C10G1/06 , C10G1/08
摘要： PROBLEM TO BE SOLVED: To provide, for a coal liquefaction process having continuous multi- stage liquefaction reactors, an effective coal liquefaction method whose operation condition is controlled, according to the progress of the reaction in liquefaction reactors, by the property of a solid org. material in samples of the contents taken out of the reactors. SOLUTION: In a coal liquefaction method where a coal is mixed with a solvent for liquefaction and a catalyst to form a slurry, and a liquefied oil is manufactured by hydrocracking the slurry under a high pressure and high temp. condition while supplying a gas mainly composed of hydrogen, its operation condition is controlled, according to the progress of the reaction in liquefaction reactors, by sampling the contents of each reactor of the liquefaction process comprising continuous multi-stage liquefaction reactors and evaluating the property of a solid org. material.

2. 发明专利

JPH10298557A LIQUEFACTION OF COAL 失效
公开(公告)号：JPH10298557A
公开(公告)日：1998-11-10
申请号：JP10924197
申请日：1997-04-25
申请人： NIPPON STEEL CORP , MITSUI SEKITAN EKIKA KK
发明人： AIHARA YOICHI , IMADA KUNIHIRO , MOCHIZUKI MICHIHARU , IGUCHI KENJI , NOGAMI YOSHINOBU
IPC分类号： C10G1/06
摘要： PROBLEM TO BE SOLVED: To produce a liquefied coal wherein a solvent for liquefaction of coal to be recycled is surely judged in terms of stabilization of the solvent by determining the time when each of the concentrations of specific substances contained in the solvent result in a certain convergence and hence a recovery of stabilized liquefied oil is increased and a running time required for the stabilization is lessened. SOLUTION: This method comprises the following steps: preparing a coal slurry 4 by blending coal 1 and a solvent and catalyst for liquefying coal; producing a liquefied oil by heating and pressurizing the coal slurry 4 in the presence of hydrogen 5 so as to be subjected to pyrolysis and hydrocracking reaction; fractionating the liquefied oil into a product oil, circulating solvent 14 and liquefied residuals 13 by distillation under normal and reduced pressures; hydrogenating the circulating solvent 14 by heating and pressurizing the solvent 14 in the presence of hydrogen 15 and a catalyst for solvent hydrogenation; and recyclably employing the resultant solvent in the first slurry-preparing process. In the above liquefied process, when the variation of the respective concentrations of paraffin, pyrene, biphenyl, dibenzofuran and/or anthracene falls within the range of 2% per day, the solvent in question is judged as a stabilized solvent.

3. 发明专利

JPH07207273A LIQUEFACTION OF COAL 失效
公开(公告)号：JPH07207273A
公开(公告)日：1995-08-08
申请号：JP1777794
申请日：1994-01-19
申请人： NIPPON STEEL CORP , MITSUI SEKITAN EKIKA KK
发明人： MOCHIZUKI MICHIHARU , ENDO KOHEI , IGUCHI KENJI , YAMAGIWA HISASHI
IPC分类号： C10G1/00 , C10G1/06 , C10G1/08
摘要： PURPOSE:To liquefy coal at good efficiency of reaction by grinding coal, classifying and collecting coal particles with a specified particle diameter, forming a coal slurry from the remaining coal particles, and subjecting this slurry to the step of coal liquefaction and the step of solvent hydrogenation. CONSTITUTION:Feed coal is sent from a feed tank 14 to a primary crusher 16, crushed, fed from a feeder 17 to a grinder/dryer 18, and ground and dried to a water content of about 2% with hot air sent from a hot air generator 19. About 150mum or larger coarse particles are recycled from a classifier 20, and about below 150mum particles are classified into 32mum or coarser particles and 32mum or finer particles with a dry classifier 24, the 32mum or finer particles containing 7% or above CaO, SiO2 and Fe2O3 are discharged from the system, and the 32mum or finer particles having a CaO content of 7% or below and the 32mum or coarser particles are sent to a coal weighing tank 23. These coal particles are mixed with a liquefaction solvent and a liquefaction catalyst, slurried, and subjected to a liquefaction reaction under applied heat and pressure in the presence of hydrogen. The liquefied oil is separated into a solvent and residues, part of the solvent is hydrogenated, and the formed oil is recycled as a coal liquefaction solvent.

4. 发明专利

JPS60248827A PRELIMINARY TREATMENT OF SINTERED RAW MATERIAL 失效
公开(公告)号：JPS60248827A
公开(公告)日：1985-12-09
申请号：JP10546184
申请日：1984-05-24
申请人： NIPPON STEEL CORP
发明人： YAMAGUCHI KAZUYOSHI , MOCHIZUKI MICHIHARU , SHIMOZAWA EIICHI , NAGASHIMA TAKEO , ARAI KOUICHI , MIZUMA MASAHIKO
IPC分类号： C22B1/16
摘要： PURPOSE:To improve air permeability of a sintered raw material and to produce sintered ore having excellent reducibility in the stage of producing the sintered ore for a blast furnace by pelletizing pulverous iron ore and powdery lime with coarse granular iron ore as a nucleus and using the pellets in conjunction with a main raw material. CONSTITUTION:The main raw material 4 for the sintered ore is gurried from each storage tank and is charged into a primary mixer 7 and is mixed. The pulverous iron ore 1 contg. >=70% =1 or 2 kinds among limestone, quicklime and slaked lime having =1.0wt% of the sintered raw material. The limestone powder, etc. are used at >=0.5wt% thereof. The coarse granular ore such as the sintered returns of the blast furnace as the nucleus for pelletization is used at a ratio of 20/80-60/40 with respect to the total weight of the pulverous ore and the limestone. Such pellets 6 are mixed with the main raw material mixture from the mixer 7 in a secondary mixer 8. The sintering raw material having excellent air permeability is thus obtd.

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

JPH05179254A STABLE METHOD FOR EXTRACTING LIQUEFACTION RESIDUE IN COAL LIQUEFYING PROCESS AND DEVICE STRUCTURE THEREFOR 失效
公开(公告)号：JPH05179254A
公开(公告)日：1993-07-20
申请号：JP36156791
申请日：1991-12-26
申请人： NIPPON STEEL CORP , MITSUI SEKITAN EKIKA KK
发明人： MOCHIZUKI MICHIHARU , KATO KENJI , SATO TAKASHI , YAMAMOTO HISANORI , IGUCHI KENJI
IPC分类号： C10G1/00 , C10G1/06
摘要： PURPOSE:To stably extract the subject residue without sticking the residue to a piping by blending coal with a liquefying solvent and a liquefying catalyst into a slurry, subjecting the slurry to hydrogenolysis under pressure and heating to form a liquefied oil, distilling, heating and returning the liquefaction residue to a vacuum distillation column. CONSTITUTION:Coal is blended with a coal liquefying solvent and a coal liquefying catalyst into a slurry. The prepared coal slurry is subjected to hydrogenolysis under normal pressure and heating to form a liquefied oil. The prepared liquefied oil is distilled under normal pressure and under reduced pressure, separated into various product oils and liquefaction residue and the liquefaction residue is pressurized and heated in the presence of a solvent hydrogenating catalyst and hydrogenated to give a coal liquefying solvent. The prepared coal liquefying solvent is returned to the coal slurrying process, the liquefaction residue is extracted from the bottom a vacuum distillation column 43, heated by a heating medium heating furnace 48 and returned to the vacuum distillation column 43 to stably extract the liquefaction residue without causing deposit and precipitate of the liquefaction residue on a piping in a coal liquefying process.

7. 发明专利

JPH02268831A PRODUCTION OF CATALYST FOR LIQUEFACTION OF COAL BY SULFURIZATION OF ACICULAR GOETHITE AND THIS CATALYST 失效
公开(公告)号：JPH02268831A
公开(公告)日：1990-11-02
申请号：JP8979889
申请日：1989-04-11
申请人： NIPPON STEEL CORP
发明人： KAWABATA MUTSUMARO , KUSAKA KENICHI , MOCHIZUKI MICHIHARU , ARAI KOICHI
IPC分类号： B01J27/128 , B01J27/043 , C10G1/06
摘要： PURPOSE:To easily produce a large amt. of a high activity catalyst for liquefaction of coal by bringing a gas contg. hydrogen sulfide into contact with a goethite slurry, drying the resulting iron sulfide and crushing it into fine particles. CONSTITUTION:Ferrous sulfate or ferrous chloride as starting material in an alkali soln. is allowed to react with a gas contg. oxygen introduced into the soln. to prepare an acicular goethite slurry. This slurry is desalted, washed and allowed to react with a gas contg. hydrogen sulfide by vapor-liq. contact to form iron sulfide with the goethite as a desulfurizing agent for the hydrogen sulfide. The formed iron sulfide is dried and crushed into fine particles to obtain a catalyst for liquefaction of coal. This catalyst has such characteristics as 0.05-2.0mum major axis size, 5-30 ratio of major axis size to minor axis size and 30-120m /g specific surface area.

8. 发明专利

JPS5665944A MANUFACTURE OF IRON SAND SINTERED ORE 失效
公开(公告)号：JPS5665944A
公开(公告)日：1981-06-04
申请号：JP14298679
申请日：1979-11-05
申请人： NIPPON STEEL CORP
发明人： UMETSU YOSHINORI , KAGAWA MASAHIRO , MOCHIZUKI MICHIHARU
IPC分类号： C22B1/16
摘要： PURPOSE:To manufacture iron sand sintered ore contg. much iron sand and not inferior to ordinary sintered ore at all in quality level by blending lime and serpentine, dolomite or the like as slag making materials when starting materials for iron sand sintered ore are blended. CONSTITUTION:When starting materials for manufacturing iron sand sintered ore contg. 50-80% iron sand are blended, a slag making material such as limestone or quick lime is blended so as to adjust the basicity (CaO/SiO) of the ore to >=1.2, and a slag making material such as serpentine, dolomite or Ni slag as an MgO source is further added so as to adjust the MgO content of the ore to 3-6%. Thus, slag of magnesioferrite and slag of calcium ferrite are formed by the reaction of magnetite in iron sand with MgO and CaO, respectively. As a result, the resulting iron sand sintered ore has remarkably enhanced sintering reactivity, cold strength and reduction powdering resistance.

9. 发明专利

JPH09296180A LIQUEFACTION OF COAL 失效
公开(公告)号：JPH09296180A
公开(公告)日：1997-11-18
申请号：JP10831896
申请日：1996-04-30
申请人： NIPPON STEEL CORP , MITSUI SEKITAN EKIKA KK
发明人： IKEDA KOICHI , IMADA KUNIHIRO , MOCHIZUKI MICHIHARU , IGUCHI KENJI , MITA SHIGERU , MIHASHI TOSHITSUGU
IPC分类号： C10G1/06 , C10G1/08
摘要： PROBLEM TO BE SOLVED: To efficiently, economically and advantageously liquefy coal by mixing the coal with a solvent and a catalyst for liquefying the coal, providing a slurry, evaluating properties of contents of each reactional column comprising multistage liquefying reactional columns, regulating operating conditions for each reactional column and carrying out the hydrogenolysis. SOLUTION: For example, a sample collecting device equipped with a receiver 1, a nozzle 2 for collection, a collecting valve 4, a degassing valve 5, a sample recovering valve 6, an inert gas introduction valve 7, etc., is installed in each liquefying reactional column, etc., to collect contents of each liquefying reactional column therefrom. Properties of the contents such as coal conversion rate and a liquefied oil yield are evaluated to perform the regulation (e.g. the regulation of the reactional time, concretely regulation of the number of the liquefying reactional columns used) of operating conditions according to progress conditions of the liquefying reaction for each liquefying reactional column when mixing the coal with a solvent and a catalyst for liquefying the coal, carrying out the hydrogenolysis of the resultant coal slurry with hydrogen gas under high temperature and pressure conditions using a reactional column 3 comprising the continuous multistage liquefying reactional columns and liquefying the coal.

10. 发明专利

JPH06287571A PREPARATION OF COAL SLURRY IN COAL LIQUEFACTION PROCESS 失效
公开(公告)号：JPH06287571A
公开(公告)日：1994-10-11
申请号：JP7979093
申请日：1993-04-06
申请人： NIPPON STEEL CORP , MITSUI SEKITAN EKIKA KK
发明人： MOCHIZUKI MICHIHARU , KAWABATA MUTSUMARO , IGUCHI KENJI , NOGAMI YOSHINOBU
IPC分类号： C10G1/06 , C10G1/08 , C10L1/32 , C10L10/18
摘要： PURPOSE:To provide a coal slurry preparation process whereby the feed trouble arising from an increase in the slurry viscosity in a coal slurry preparation step can be prevented. CONSTITUTION:This process for preparing a coal slurry by mixing feed coal with a solvent for coal liquefaction, a catalyst for coal liquefaction and a surfactant comprises setting the temperature in the slurry preparation at 50-150 deg.C, adjusting the time of the slurry preparation, adjusting the sheer rate of the slurry so that the relationship between the sheer rate of the slurry and the shear stress of the slurry may lie within the second region of Neutonian flow, and thereby adjusting the viscosity of the slurry to a necessary value. According to the process, a slurry feed trouble in the slurry preparation can be prevented even when coal highly swellable in the solvent and apt to form a highly viscous slurry is used, and the operation cost can be reduced.

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