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1. 发明专利

JPH04367354A TWIN BELT TYPE CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH04367354A
公开(公告)日：1992-12-18
申请号：JP13896991
申请日：1991-06-11
申请人： MITSUBISHI HEAVY IND LTD , NIPPON STEEL CORP
发明人： OTAWA KIMIAKI , KANAI NORIYUKI , KATAHIRA KEIICHI
IPC分类号： B22D11/06
摘要： PURPOSE:To promote increase of thickness of solidified shell and free shrinkage in a cast slab by eliminating the gap between the east slob and short side blocks in twin belt type continuous casting apparatus. CONSTITUTION:In the twin belt type continuous casting apparatus providing rectangular cross sectional mold 10 composed of one pair of belts 11, which descend while forming the fixed interval to the mutual faced parts, and one pair of the short blocks 1, which descend while holding with both faced parts of the belts, by forming projecting part for increasing inclination of descending locus of the short side blocks 11 at position, where shrinkage of the case slab S having 60-80% of the total shrinkage quantity at outlet of the mold is developed, the descending locus of short side block 1 is set as similar to shrinkage curve in width direction of the cast slab S in the mold 10.

2. 发明专利

JPH04346950A COMBINATION PLANT FOR PRODUCING PIG IRON AND METHANOL 失效
公开(公告)号：JPH04346950A
公开(公告)日：1992-12-02
申请号：JP11741491
申请日：1991-05-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTAWA KIMIAKI , FUKUSHIMA TAKEO , KANEDA HIROAKI , SAKAI MASAYASU , TOKUDA MASAHIRO
IPC分类号： F27D17/00 , C07C29/151 , C07C31/04
摘要： PURPOSE:To obtain a plant capable of using a steam coal which has been difficult to be used in a process of conventional melt-pig iron production and enabling the mitigation of the restrictions on operation conditions. CONSTITUTION:Combustible gas generated in the production of molten pig iron in a melting gasification furnace 1 of a melt-pig iron production process 18 is passed through a gas-cleaning process 28 and a decarbonation process 58 to remove unnecessary substances, a CO shift reaction process 48 to adjust the ratio of carbon monoxide to hydrogen in the combustible gas to a level suitable for methanol synthesis and finally a methanol synthesis process 68 to synthesize methanol. The restriction of the generation amount of the combustible gas in the melt-pig iron production process 18 becomes unnecessary. Furthermore, a low-grade coal such as steam coal and brown coal can be used in the process 18 to enable the low-cost production of methanol expected as a substitute for gasoline.

3. 发明专利

JPH04321725A COMPLEX PRODUCTION PLANT FOR PIG IRON AND METHANOL 失效
公开(公告)号：JPH04321725A
公开(公告)日：1992-11-11
申请号：JP11805091
申请日：1991-04-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTAWA KIMIAKI
IPC分类号： F02C6/00
摘要： PURPOSE:To simultaneously manufacture pig iron and methanol, effectively utilizing coal, without the emission of carbon dioxide. CONSTITUTION:It is provided with a melt deoxidation system 1 to obtain pig iron (e) by pre-deoxidizing iron ore (a) and melt-deoxidizing the reduced iron (b) through combustion of coal (c) by pure oxygen (d). It is provided with a gas turbine system 2 to burn by-product gas (h) by-produced in the melt deoxidation system 1 by pure oxygen (i). It is provided with a steam generating system 3 to generate steam (l) by exhaust gas (j) from the gas turbine system 2. It is provided with a methanol synthesis system 4 to introduce by-product gas (r) produced in the melt deoxidation system 1 and steam (o) generated in the steam generating system 3, obtain CO and then H2 from CO, and synthesize and refine methanol (s) Further, it is provided with a CO2 liquefaction system 5 to compress and cool exhaust gas (p) from the gas turbine system 2 and liquefy CO2.

4. 发明专利

JPH0445231A GAS JET-TYPE HEAT-TRANSFER DEVICE 失效
公开(公告)号：JPH0445231A
公开(公告)日：1992-02-14
申请号：JP15148790
申请日：1990-06-12
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTAWA KIMIAKI
IPC分类号： C21D9/56 , C21D9/63
摘要： PURPOSE:To prevent the lowering of heat transfer on both ends of a strip and to obviate the deterioration of the strip by injecting a heat-transfer gas toward the traveling strip from the gas injection port of a plenum chamber, sucking the waste gas from a suction port and discharging the waste gas. CONSTITUTION:A gaseous refrigerant such as air is supplied to a plenum chamber 1 through a duct 3 and injected on the upper and lower surfaces of a traveling strip S from plural injection ports 2 to cool the strip. In this gas jet-type heat-transfer device, a suction chamber 7 is formed in the chamber 1 by a partition wall 5, and a suction port 4 provided with a guide peripheral wall 6 is furnished to the chamber 7. The waste gaseous refrigerant is sucked from the suction port 4 and discharged through a duct 8. Consequently, the cooling rate close to both ends of the strip S is not reduced, the strip is uniformly cooled, the deterioration of the strip S due to the nonuniform temp. distribution is obviated, and the instable traveling of the strip S resulting from the defective shape is prevented.

5. 发明专利

JPH04318208A METHANOL BURNING COMPOSITE POWER GENERATION 失效
公开(公告)号：JPH04318208A
公开(公告)日：1992-11-09
申请号：JP8522791
申请日：1991-04-17
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTAWA KIMIAKI , TOKUDA MASAHIRO
IPC分类号： F01K23/10 , F02C3/24 , F02C7/22
摘要： PURPOSE:To improve thermal efficiency and so forth by heating methanol with burning exhaust gas or steam for vaporization, and after mixing air with the vaporized gas and generating preliminary mixed gas, by burning the preliminary mixed gas to drive a generator with burning gas. CONSTITUTION:Liquid methanol is put into a carburetor 2 from a lead pipe 1, and is vaporized with low-pressure steam generated in an exhaust heat boiler 3. The vaporized methanol steam is heated by a heater 6 incorporated in the exhaust heat boiler 3, and after air is mixed from the lead pipe 21 for preliminary mixed gas, which is supplied to a burner 8. After the preliminary mixed gas is burnt with air supplied from a compressor 9, it is supplied to a gas turbine 12 for the driving source of a generator 13. The exhaust gas which leaves the gas turbine 12 is led to the exhaust heat boiler 3, and is then taken out to the outside of a system from the lead pipe 15. Respective low-pressure, medium-pressure and high-pressure steam generated in the exhaust heat boiler 3 are sent to each of a low-pressure turbine, and medium-pressure and high- pressure turbine 18, 19 from respective lead pipes 4, 16, 17 to drive a generator 20 respectively.

6. 发明专利

JPH0494844A TWIN DRUM TYPE CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH0494844A
公开(公告)日：1992-03-26
申请号：JP21031390
申请日：1990-08-10
申请人： MITSUBISHI HEAVY IND LTD , NIPPON STEEL CORP
发明人： OTAWA KIMIAKI , NAKAJIMA HIROYUKI
IPC分类号： B22D11/06
摘要： PURPOSE:To eliminate delay of solidification in a cast strip at both end parts in the width direction of the cast strip in kissing point by continuously charging cooling metal into both end parts in the width direction of the cast strip in the pouring basin part with cooling metal charging means at the time of solidifying by cooling with cooling drums after supplying molten metal into the pouring basin part. CONSTITUTION:The molten metal R in a tundish 61 is continuously supplied into the pouring basin part 50 from a submerged nozzle 62 and cooled with the cooling drums 51 and solidified to the hoop-state cast strip S and drawn downward to the arrow mark B direction. At the same time, the coiled cooling metal wires W fitted to reels 2 in both cooling metal charging devices 10 are fed out with pinch rolls 3, and the winding deformation thereof is straightened with straightening rolls 4 and the wires are continuously supplied into both end parts in the width direction of cast strip in the pouring basin part 50 with guide rolls 5 at the same velocity as drawing velocity of the cast strip S. This cooling metal wires W prevent delay of the solidification at both end parts in the width direction of cast strip S without being melted with sensible heat of the molten metal R and the cast strip S having good shape is continuously cast.

7. 发明专利

JPH03174954A TWIN DRUM TYPE CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH03174954A
公开(公告)日：1991-07-30
申请号：JP31055989
申请日：1989-12-01
申请人： MITSUBISHI HEAVY IND LTD , NIPPON STEEL CORP
发明人： OTAWA KIMIAKI , YAMAGAMI YASUHIRO , TSUTSUI KOJI
IPC分类号： B22D11/06
摘要： PURPOSE:To disperse wear of a side weir over the wide range and to drastically extend the service life by finely oscillating the side weir and also shifting to side direction while bringing the side weir into contact with end face of cooling drum. CONSTITUTION:The water cooling drum 111 is rotated, and while oscillating the side weir 101 with an oscillating device 1 with the centering axis C in the center shaft 126 as center, the strip S is continuously cast. In this time, the refractory 101a is worn as groove-state in the width of size adding the width of sealing part 111a and amplitude of oscillation in the min. gap of water cooling drums 111. Therefore, at the time of being shallow of the worn depth, by working a hydraulic cylinder 2 in the oscillating device 1 and the control unit, the oscillating device 1 is shifted to the direction shown with the arrow mark B along a guide rod 3 and also the side weir 101 is shifted as the same way through an eccentric shaft 122, slider 124, stopper 125 and center shaft 126 and unwearing face of the refractory 101a is run onto the sealing part 11a. By this method, the refractory 101a in the side weir 101 is used over the wide range successively and the service life of side weir 101 is drastically extended.

8. 发明专利

JPH04338102A METHOD FOR ENRICHING COMBUSTIBLE GAS WITH HYDROGEN 失效
公开(公告)号：JPH04338102A
公开(公告)日：1992-11-25
申请号：JP10587691
申请日：1991-05-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTAWA KIMIAKI , KANEDA HIROAKI , SAKAI MASAYASU , TOKUDA MASAHIRO
IPC分类号： C01B3/02 , C10K3/04
摘要： PURPOSE:To enrich the combustible gas generated in melting iron with hydrogen to obtain a gas appropriate for methanol synthesis without hindering the operation of melting iron. CONSTITUTION:An org. fuel and reduced iron are supplied to a melting and gasifying furnace to produce molten iron and a combustible gas. In this case, the content of the fixed carbon in coal as the fuel to be added to the furnace is controlled to 0.3ton per ton of the product pig iron. The amt. of an oxygen- contg. gas to be blown into the furnace is adjusted so that the molten iron in the furnace is controlled to a specified temp. The amt. of hydrogen to be blown into the furnace is adjusted so that the ratio of the number of mols of the total carbon in the combustible gas generated from the furnace to that of the total oxygen is specified.

9. 发明专利

JPH04297528A BENDING FLOATER 失效
公开(公告)号：JPH04297528A
公开(公告)日：1992-10-21
申请号：JP8601691
申请日：1991-03-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTAWA KIMIAKI
IPC分类号： C21D9/63
摘要： PURPOSE:To prevent warp of a sheet due to temp. difference in width direction developed with difference between fluid speeds in sheet center and in sheet edge part in the case of wide breadth of sheet, with respect to fluid injection type bending floater for conveying mainly steel sheet in process line product for iron plant or sheet-shaped material of paper or plastic film, etc., under condition of curving and non-contacting. CONSTITUTION:Plural floaters 1 are disposed along locus conveying the steel sheet 8 and connected with a plenum chamber 4 through flow rate adjusting dampers 3 to each. The plenum chamber 4 is constituted so as to blow cold blast in there with a blower 5. An air exhaust passage 2 is arranged between mutual floaters 1 and an exhaust passage adjusting valve 7 is set at the outlet to each. Air blown from a nozzle 6 in the floater 1 is exhausted not only from both end parts of the steel sheet 8, but also from exhaust passage 2 through the whole periphery of each floater.

10. 发明专利

JPH04191307A SMELTING REDUCTION IRON MANUFACTURING DEVICE 失效
公开(公告)号：JPH04191307A
公开(公告)日：1992-07-09
申请号：JP31806490
申请日：1990-11-26
申请人： MITSUBISHI HEAVY IND LTD
发明人： OTAWA KIMIAKI , FUKUSHIMA TAKEO , ITANO SHIGEO
IPC分类号： C21B11/02 , C21B13/00 , C21B13/14 , F27D17/00
摘要： PURPOSE:To make an operation at a low cost and to prevent discharge of CO2 to atmosphere by burning general coal or low quality coke with oxygen, utilizing sensible heat of exhaust gas after burning the exhaust gas with a gas turbine and further, liquefying CO2. CONSTITUTION:In a smelting reduction iron manufacturing device providing a smelting reduction furnace 12 and a pre-reduction furnace 14, the general coal or the low quality coke is used as a reducing fuel 34 in the smelting reduction furnace 12 and O2 for burning from an oxygen manufacturing device 13 is used. This exhaust gas 16 is used as the fuel gas 48 to the gas turbine 18 for generator 19 and burnt together with the above-mentioned O2. The exhaust gas 21 from this gas turbine 18 passes to carbon dioxide gas liquefying means 33 after recovering the sensible heat with an exhaust gas boiler 22 and a steam turbine 23 for generator 24. Then, the above-mentioned exhaust gas 21 is compressed and cooled to liquefy CO2. By this method, the reducing fuel is used at a low cost and the exhaust gas is efficiently utilized and also the discharge of CO2 to the atmosphere is prevented.

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