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    • 114. 发明专利
    • COAL GASIFICATION APPARATUS
    • JPS6386795A
    • 1988-04-18
    • JP23278286
    • 1986-09-30
    • MITSUBISHI HEAVY IND LTD
    • HANEDA TOSHIOKASHIWAZAKI MASAMICHIKOGA YOSHITAKAISHIGAMI SHIGEYASUSHINADA OSAMU
    • C10J3/46C10J3/48
    • PURPOSE:To provide the titled apparatus having high reliability and small pressure difference between the inside and the outside of a water-cooled wall and consisting of a product gas refining apparatus recycling a part of the gas and a pressure vessel forming an annulus part and containing a gasification furnace having a water-cooled wall and a heat-exchanger having an equalizing hole. CONSTITUTION:The objective coal gasification apparatus is composed of (A) the main body of the gasification furnace consisting of 3 components, i.e. a combustor 1 encircled with a water-cooled wall 4, a diffuser 2 and a reducer 3, (B) heat-exchangers 7-9 connected to the product gas outlet port of the gasification furnace main body through a connection line, (C) pressure vessels 6, 19, 28 containing the gasification furnace main body, connection line and heat-exchanger and forming annulus parts 22-24 and (D) gas refining apparatuses 32-34 placed at the downstream side of the heat- exchanger and refining the produced gas delivered from the outlet of the heat- exchanger. In the above apparatus, the produced gas outlet port of the heat-exchanger is connected to the annulus part 24 through an equalizing hole 30 and a part of the outlet gas of the gas-refining apparatus is recycled with a gas-recycling fan 36 and supplied to the annulus part 22 through a line in pressurized state.
    • 116. 发明专利
    • TWO FLUID MIXING NOZZLE
    • JPS62247851A
    • 1987-10-28
    • JP5786687
    • 1987-03-12
    • DOW CHEMICAL CO
    • CHIYAARUZU DABURIYUU RITSUPU
    • B01J19/26B05B7/04B29B7/76C10J3/48
    • A two-fluid nozzle for atomising a liquid-solid slurry comprises a first conduit (12) through which an atomizing gas flows and a second conduit (20) located within the first conduit. The liquid-solid slurry to be atomized flows through the second conduit (20). The first conduit (12) has a reduced portion which causes an increased in velocity of the gas passing therethrough. This reduced portion terminates at a dispersion chamber (25) into which the liquid-solid slurry from the second conduit also flows. The high velocity gas intersects the liquid-solid slurry stream and produces a dispersion with same and also effects some atomization of the slurry. The dispersion is discharged through a third conduit (28) which is oblique to the first conduit and which has a cross-sectional area for flow less than the combined cross-sectional areas for flow of the reduced portion of the first conduit and the second conduit at their respective discharge ends. By being thus dimensioned, the third conduit provides further atomization of the liquid-solid slurry to achieve the high degree of atomization desired.
    • 117. 发明专利
    • METHOD AND APPARATUS FOR GASIFICATION IN COAL GASIFICATION OVEN
    • JPS62236891A
    • 1987-10-16
    • JP7993286
    • 1986-04-09
    • HITACHI LTD
    • MORIHARA ATSUSHIMIYAMOTO TOMOHIKOKOYAMA SHUNTARONOKITA SHUNSUKEHISHINUMA TAKAO
    • C10J3/00C10J3/46C10J3/48
    • PURPOSE:To attain appropriate dropwise fall of a slag without using any additional heating means for preheating, by generating a circulation system of a combustible gas by means of a pressure difference in a gasifying chamber by heating a slag tap with the circulating combustible gas. CONSTITUTION:Since any whirling current of gas is not generated below a slag tap 3, a pressure distribution uniform along its radial direction occurs there. Comparing pressures between above and below the slag tap 3, the pressure above the tap is lower than that below the tap at a gas return aperture 4 provided at the circulation center. On the other hand, at a slag flow-down aperture 7 outside the circulation center, the pressure above the tap is higher than that below the tap. Therefore, the gas flows from below the tap towards above the tap at the gas return aperture 4 provided at the circulation center, and flows from above the tap towards belows the tap at the slag flow-down aperture 7 outside the circulation center. The high-temp. gas within the furnace gets into the space below the slag tap 3 through the slag flow-down aperture 7 and, as a gas stream 8 returns to the inside of the furnace through a gas return aperture 4. A slag 6 dropwise falls due to gravity, while the gas stream moves the gas return aperture 4. The slag 6 cannot follow a rapid change in the gas flow direction, so that it is separated from the gas stream, thereby dropwise falling into a slag cooling chamber.
    • 118. 发明专利
    • GASIFIER
    • JPS6281489A
    • 1987-04-14
    • JP22132485
    • 1985-10-04
    • MITSUBISHI HEAVY IND LTD
    • HANEDA TOSHIONISHIMURA ISAOUCHIDA SATOSHIKASHIWAZAKI MASAMICHI
    • C10J3/46C10J3/48
    • PURPOSE:To readily gasify coal by using a gasifier provided with a gasifying oven having a water seal in an autoclave and a heat exchange portion having a free portion, thereby controlling the pressure within the autoclave so as to maintain a predetermined pressure difference between that and the pressure within the oven. CONSTITUTION:Portion of coal 11, circulating char 12 and air or oxygen 13 are fed into a combustor 1 of a gasifying oven surrounded by a water-cooled wall 4 and lined with a fire-resistant material 5 which oven is disposed in a 20-40kg/cm autoclave 6, and are maintained at a high temp. The melt slugs caused to flow into a slug hopper 16 having the gap from the water-cooled wall 4 gas-sealed with a water seal 26 and to be discharged as a water-cooled slug 17. On the other hand, the heated gas as formed is fed into a diffuser 2, and the remaining coal 25 is supplied to effect gasification. The resulting gas is fed through a reductor 3 and a communicating pipe 28 into a heat exchange portion surrounded by a water cooled wall and provided with heat exchangers 7-9 which portion is disposed in an autoclave 19 communicating with an autoclave 6 via a lower communicating pipe 31. The formed gas coming out of the heat exchanger portion is fed into 18 via a free portion 30 and a lower gas receiving unit 10. Portion of the formed gas is fed through the free portion 30 into autoclaves 22 and 24, thereby enabling the self equilibrium control of the pressure.