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    • 97. 发明授权
    • Calcium sulfide oxidation method
    • 硫化钙氧化法
    • US06245314B1
    • 2001-06-12
    • US09140657
    • 1998-08-26
    • Yoshihiko TsuchiyamaYuichi FujiokaToshihiko SetoguchiKatsuhiko ShinodaKenji TagashiraShigeyasu IshigamiYoshinori Kobayashi
    • Yoshihiko TsuchiyamaYuichi FujiokaToshihiko SetoguchiKatsuhiko ShinodaKenji TagashiraShigeyasu IshigamiYoshinori Kobayashi
    • C01F1146
    • B01J8/1809B01D53/73B01J8/1836B01J8/34B01J8/386B01J2208/00008B01J2208/0084C01F11/46Y10S423/16
    • CaS oxidation has CaS particles oxidized into CaSO4 completely as far as to the interior of the particle. The interior of an oxidation apparatus 1 is partially partitioned by a partition 22 to thereby form a first fluidized bed 20 on the inner side, a second fluidized bed 21 on the outer side and a space portion 23 thereabove. A heat exchanger 27 having a baffle plate is disposed on the inner side of the partition 22 and an in-bed heat exchanger 33 is disposed on the outer side of same. A desulfurizing product-containing fine powder 204 and coarse powder 205 and a mixture gas 206 of nitrogen, oxygen and steam are supplied into the second fluidized bed 21. Also, coal 200 and coal char 201 are supplied into the first fluidized bed 20 from below. Of the particles 304 oxidized in the second fluidized bed 21 and supplied into the first fluidized bed 20 from below with the flow of a mixture gas 208, the fine powder entrains into the space portion 23 as entrained particles 300 and a major part thereof falls down into the second fluidized bed 21 as particles 207. The completely oxidized particles are discharged as discharged ash 303 and entrained ash 302.
    • CaS氧化将CaS颗粒完全氧化成CaSO 4直至颗粒内部。 氧化装置1的内部被隔板22部分地隔开,从而在内侧形成第一流化床20,在外侧形成第二流化床21,在其上形成空间部23。 具有挡板的热交换器27设置在隔板22的内侧,并且在其外侧设置有床内热交换器33。 将含脱硫产物的细粉末204和粗粉末205以及氮气,氧气和蒸汽的混合气体206供给到第二流化床21中。另外,将煤200和煤炭201从下方供给到第一流化床20 。 在第二流化床21中被氧化并从下方供入混合气体208的第一流化床20的颗粒304中,细粉末作为夹带颗粒300进入空间部分23,并且其主要部分下降 作为颗粒207进入第二流化床21.完全氧化的颗粒作为排出的灰分303和夹带的灰分302排出。