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    • 26. 发明专利
    • Gas recirculating device for direct reduction furnace
    • 用于直接还原炉的气体再循环装置
    • JPS6199613A
    • 1986-05-17
    • JP22038184
    • 1984-10-22
    • Nippon Steel CorpNittetsu Plant Designing Corp
    • SHIBAMURA KENTAROUENOYAMA KIYOSHIKAMIMURA AKIRASHIROMIZU WATARU
    • C21B13/02
    • C21B13/02C21B2100/22C21B2100/44C21B2100/64C21B2100/66
    • PURPOSE:To manufacture a reducing gas having high reduction power by utilizing part of the waste gas from a reduction reaction furnace for fuel of a reformer furnace to use the CO2 in the waste gas as a reforming agent for the reformer furnace and providing a heat recovering device to the reformer furnace. CONSTITUTION:The waste gas from the reduction reaction furnace 1 is subjected to cooling, dust removal and humidification in a cooler 2. The substantial amt. of the waste gas is passed through the heat recovering device 29 installed in the reformer furnace 9 and is reheated, from which the waste gas is recycled to the furnace 1. Part of the waste gas of the furnace 1 is utilized as the fuel for the reformer furnace 9. At the same time CO2 formed by the combustion and part of the CO2 existing originally in the waste gas are utilized as the reforming agent of gaseous hydrocarbon. The equipment cost and size of the furnace 9 are reduced by such mechanism.
    • 目的:通过利用来自重整炉的燃料的还原反应炉的一部分废气来制造具有高还原能力的还原气体,以将废气中的CO 2用作重整炉的重整剂,并提供热回收 装置到重整炉。 构成:来自还原反应炉1的废气在冷却器2中进行冷却,除尘和加湿。 的废气通过安装在重整炉9中的热回收装置29,并被再加热,废气从该热回收装置再循环到炉1中。炉1的一部分废气用作燃料 重整炉9.同时,通过燃烧形成的二氧化碳和原先存在于废气中的部分二氧化碳被用作气态烃的重整剂。 这种机构减少了炉子9的设备成本和尺寸。
    • 27. 发明专利
    • Recirculating gas treatment device in direct reduction apparatus
    • 直接还原装置中的再循环气体处理装置
    • JPS6199611A
    • 1986-05-17
    • JP22037984
    • 1984-10-22
    • Nippon Steel CorpNittetsu Plant Designing Corp
    • SHIBAMURA KENTAROUENOYAMA KIYOSHIKAMIMURA AKIRASHIROMIZU WATARU
    • C21B13/02
    • C21B13/02C21B2100/26C21B2100/282C21B2100/44C21B2100/64Y02P10/122Y02P10/126Y02P10/143
    • PURPOSE:To treat a reducing gas to an ideal compsn. by providing a pressure swing adsorbing device to a recirculating gas treatment stage and separating away CO2, H2O, etc. from the gas. CONSTITUTION:The waste gas taken out of a reduction reaction furnace 1 is subjected to cooling, dust removal and dehumidification in a dust removing and cooling device 5. The gas is then increased inpressure up to the prescribed pressure by a booster 6 and is thereafter introduced into a pressure swing adsorbing device 7', where CO2, H2O, CH4, etc. are removed. The gas is in succession heated up to the temp. necessary for reduction in a gas heater 8 through a piping 14. The gas is thereafter joined with the reducing gas 16 sup plied from a reducing gas generator 4 and is recycled into the furnace 1. The off gas adsorbed and separated in the device 7' contains CH4, CO, H2, etc. and is therefore reused as the fuel for the gas heater 8 and the reducing gas generating furnace 4.
    • 目的:将还原气体用于理想化合物。 通过向循环气体处理级提供变压吸附装置,并从气体中分离出CO 2,H 2 O等。 构成:从还原反应炉1中取出的废气在除尘冷却装置5中进行冷却,除尘除湿。然后,通过助力器6将气体升压至规定的压力,然后引入 进入变压吸附装置7',其中除去CO 2,H 2 O,CH 4等。 气体被连续加热到温度。 需要通过管道14还原气体加热器8.然后,气体与从还原气体发生器4提供的还原气体16连接并再循环到炉子1中。在装置7'中吸附和分离的废气, 含有CH 4,CO,H 2等,因此重新用作燃气加热器8和还原性气体发生炉4的燃料。