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1. 发明专利

JPH11335674A ESTIMATION OF PRODUCT IN COAL LIQUEFYING REACTION 失效
公开(公告)号：JPH11335674A
公开(公告)日：1999-12-07
申请号：JP7861299
申请日：1999-03-23
申请人： NIPPON CORN OIL KK , MITSUI SHIPBUILDING ENG , NIPPON STEEL CORP , MITSUI SEKITAN EKIKA KK
发明人： NAMIKI YASUKI , KOBAYASHI MASATOSHI , KIDOGUCHI AKIRA , ITO HIDENOBU , HIRAIDE MASATAKA , IMADA KUNIHIRO , IGUCHI KENJI
IPC分类号： C10G1/06 , C10G1/00
摘要： PROBLEM TO BE SOLVED: To provide a technique for estimating and simulating by which the amount of a produced liquefaction product can be estimated by using a true residence time in a coal liquefying reaction. SOLUTION: This method comprises estimating the amount of outflow for each component of an effluent from a coal liquefying reactor composed of a high-temperature and high-pressure vessel type reactor, assuming the amount of the outflow for each component of the effluent and calculating the vapor-liquid equilibrium composition of the mixture of the composition in the reactional vessel, further calculating the volume flow rates of the vapor phase and the liquid phase in the reactional vessel, calculating the residence times in the reactional vessel of the vapor phase and liquid phase from the gas holdup in the reactional vessel calculated from the volume flow rate and an empirical formula, calculating the amount of outflow for each component of the effluent from a rate equation of first-order irreversible reaction derived from the residence times in the reactional vessel, the amount of the inflow for each component of an inflow material into the reactor and a specific coal liquefying reactional model, comparing the initially assumed amount of the outflow for each component with the amount of the outflow for each component obtained by the calculation and repeating a series of calculations until the two amounts of the outflow for each component coincide within the range of a constant error for each component.

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

JPH07305072A METHOD FOR BOTH TAKING OUT LIQUEFACTION RESIDUE IN COAL LIQUEFYING PROCESS AND RECOVERING COAL LIQUEFYING CATALYST 失效
公开(公告)号：JPH07305072A
公开(公告)日：1995-11-21
申请号：JP12203594
申请日：1994-05-12
申请人： NIPPON STEEL CORP
发明人： NAMIKI YASUKI , ENDO KOHEI
IPC分类号： C10G1/00 , C10G1/06
摘要： PURPOSE:To provide a method for both stably taking out a liquefaction residue from a vacuum distillation column and recovering an iron-based liquefying catalyst in the liquefaction residue in stably running and operating a coal liquefying process. CONSTITUTION:This method for taking out a liquefaction residue in a coal liquefying process is to remove ash in the liquefaction residue on the side of an inlet or an outlet of a vacuum distillation column 23 and then take out the liquefaction residue in taking out the liquefaction residue from the bottom of the vacuum distillation column 23 of a liquefied oil distillation step in the coal liquefying process comprising a coal liquefying step for mixing powdered coal prepared by pulverizing raw material coal with a solvent for liquefying the coal and a coal liquefying catalyst, preparing a coal slurry, pressurizing and heating the resultant coal slurry in the presence of hydrogen, carrying out the liquefying reaction and producing the liquefied oil, the liquefied oil distillation step for distilling the produced liquefied oil under conditions of normal and reduced pressures and separating the liquefied oil into the product oil and the liquefaction residue and a solvent hydrogenating step for pressurizing and heating a part of the product oil obtained in the liquefied oil distillation step in the presence of a solvent hydrogenating catalyst, adding hydrogen thereto, carrying out the hydrogenating reaction and then circulating the resultant solvent for use as the solvent for liquefying the coal.

4. 发明专利

JPS63218508A CRYSTALLIZATION TANK FOR PRODUCING GRAIN TYPE AMMONIUM SULFATE 失效
公开(公告)号：JPS63218508A
公开(公告)日：1988-09-12
申请号：JP5047987
申请日：1987-03-05
申请人： NIPPON STEEL CORP
发明人： NAMIKI YASUKI , HORIBE KAZUYOSHI , MASAKO YOSHIAKI
IPC分类号： C01C1/248
摘要： PURPOSE:To prevent the segregation and the retaining of grains and mother liquid without the deterioration of classification in the crystallization tank, to promote the growth of crystal, and to obtain high yield, by taking out a part of the mother liquid of ammonium sulfate at the upper part of the crystallization tank and providing plural injection nozzles to introduce the liquid again to the bottom part of crystallization tank for circulation. CONSTITUTION:The circulating liquid (saturated solution of ammonium sulfate) of reduced concn. is introduced from the upper part of the crystallization tank 1 through a piping 7 and a pump 8 to the near part of bottom of the tank 1 where the circulating liquid and crystal grains are retained. In this case, the circulating liquid is injected through the injection nozzles 9 plurally provided along the peripheral direction as shown in the figure. Thus, by injecting liquid along the peripheral direction horizontally to the tank 1 so as to make a whirling flow, the crystal growth is promoted without the deterioration of grain classification in the tank 1. In the figure, 2 shows a vacuum evaporation tank and 4 shows a down-take pipe.

5. 发明专利

JPH0441588A INCREASE OF COG RECOVERY 失效
公开(公告)号：JPH0441588A
公开(公告)日：1992-02-12
申请号：JP14738990
申请日：1990-06-07
申请人： NIPPON STEEL CORP
发明人： IGAI KYOZO , NAMIKI YASUKI , MIO KEISUKE , KATO HIDEO
IPC分类号： C10B57/04
摘要： PURPOSE:To recover a polymer waste as a high-calory gas without spoiling the quality of a prepd. coke by decomposing the polymer waste in a reductive atmosphere in a coke oven. CONSTITUTION:COG (coke oven gas) recovery is increased by the following method A or B. In the method A, a polymer waste with a size of 1mm or smaller is compounded and mixed in a charged coal up to the max. amt. of 20% and the mixture is charged in a coke oven and carbonization is performed to obtain a reductively decomposed gas. In the method B, after coal is coabonized in the coke oven, a polymer waste with a size of 2-400mmphi is charged in an upper space of a carbonization chamber out of contact with the atmospheric air, without stopping a generated gas suction system to obtain a reductively decomposed gas.

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