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    • 23. 发明授权
    • Process for producing carbon fiber
    • 碳纤维生产工艺
    • US4131644A
    • 1978-12-26
    • US780520
    • 1977-03-23
    • Akira NagasakaHidetomo AshitakaYoshihiro KusukiDenichi OdaToshimune Yoshinaga
    • Akira NagasakaHidetomo AshitakaYoshihiro KusukiDenichi OdaToshimune Yoshinaga
    • D01F9/21C01B31/07
    • D01F9/21
    • Carbon fibers having excellent modulus of elasticity and tensile strength are produced in a high yield by a process wherein polybutadiene fibers are prepared by melt-spinning polybutadiene having at least 85% of vinyl structure, a melting point of at least 100.degree. C and a reduced viscosity of 0.3 to 1.2 dl/g; the fibers are then treated in a solution or suspension of a Lewis acid in an inert organic liquid, whereby the pollybutadiene is cyclized and cross-linked; the polybutadiene fibers treated as mentioned above are further treated in a melted sulphur or a sulphur-containing solution at a temperature of 170 to 300.degree. C, whereby the cyclized and cross-linked polybutadiene is dehydrogenated and aromatized; and the fibers treated as mentioned above are carbonized by raising the temperature thereof to 750.degree. C to 3000.degree. C to form carbon fibers or graphite fibers. If so desired, the ordinary carbon fibers which have been produced at 750 to 1500.degree. C, can be converted to graphite fibers by heating them to a temperature of 1500 to 3000.degree. C.
    • 具有优异的弹性模量和拉伸强度的碳纤维通过以下方法以高产率生产,其中聚丁二烯纤维通过熔体纺丝具有至少85%的乙烯基结构,熔点至少为100℃的聚丁二烯和减少的 粘度为0.3〜1.2dl / g; 然后将纤维在路易斯酸在惰性有机液体中的溶液或悬浮液中处理,由此将聚丁二烯环化并交联; 如上所述处理的聚丁二烯纤维在熔融硫或含硫溶液中在170〜300℃下进一步处理,由此使环化和交联的聚丁二烯脱氢和芳构化; 如上所述处理的纤维通过将其温度升高至750℃至3000℃而碳化,以形成碳纤维或石墨纤维。 如果需要,在750〜1500℃下生产的普通碳纤维可以通过将其加热至1500〜3000℃的温度而转化为石墨纤维。
    • 25. 发明授权
    • Mixed gas-separating membrane module and process
    • 混合气体分离膜组件及工艺
    • US06210464B1
    • 2001-04-03
    • US09305528
    • 1999-05-05
    • Shunsuke NakanishiMasao KikuchiYoshihiro KusukiTatsuo YamamotoMitsuo Maeda
    • Shunsuke NakanishiMasao KikuchiYoshihiro KusukiTatsuo YamamotoMitsuo Maeda
    • B01D5322
    • B01D63/02B01D53/22B01D63/027B01D2313/025B01D2313/23
    • A mixed gas-separating membrane module having a high separating efficiency includes a cylindrical container having a mixed gas-feed section, a non-permeated gas-delivery section, and a middle section; a bundle of a plurality of hollow fibers each extending through the middle section and each having an end portion opening to the mixed gas-feed section and an opposite end portion opening to the non-permeated gas-delivery section; a pair of a first disk supporting the hollow fiber end portion opening to the mixed gas-feed section and partitioning the middle section from the mixed gas-feed section, and a second disk supporting the opposite hollow fiber end portions opening to the non-permeated gas-delivery section and partitioning the middle section from the non-permeated gas-delivery section, the first and second disks supporting the hollow fibers so that the hollow fibers are spaced from each other, to leave a continuous space between the hollow fibers; and a cylindrical film member surrounding the hollow fiber bundle to such an extent that the continuous space formed between the hollow fibers is connected to a permeated gas-delivery outlet of the middle section, the middle section, having a permeated gas-delivery outlet located close to the first disk and a carrier gas-feed inlet located close to or in the second disk, to allow the carrier gas fed into the middle section to flow through the continuous space, countercurrently to the flow of the mixed gas through the hollow fibers.
    • 具有高分离效率的混合气体分离膜组件包括具有混合气体供给部分,非渗透气体输送部分和中间部分的圆柱形容器; 多个中空纤维束,每个中空纤维各自延伸穿过中间部分,并且每个中空纤维具有通向混合供气部分的端部部分和与非渗透气体输送部分开口的相对端部; 一对第一盘,其支承通向所述混合气体供给部的中空纤维端部,并且将所述中间部分与所述混合气体供给部隔开;以及第二盘,其支撑所述相对的中空纤维端部, 气体输送部分并且将中间部分与非渗透气体输送部分分隔开,第一和第二圆盘支撑中空纤维,使得中空纤维彼此间隔开,以在中空纤维之间留下连续空间; 以及围绕中空纤维束的圆柱形薄膜构件,使得形成在中空纤维之间的连续空间连接到中间部分的渗透气体输送出口,中间部分具有位于关闭位置的渗透气体输送出口 位于靠近或位于第二盘的第一盘和载气进料入口,以允许进入中间部分的载气与通过中空纤维的混合气体的流动逆流地流过连续空间。