CN101848859A - 碳纳米管或碳纳米纤维的生产装置和采集装置 - Google Patents
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Abstract
一种含有碳纳米管且从反应器(12)中排放出的废气经过排放管(24)被导入到过滤器(26)中。在过滤器(26)的下游设置有吹风机(28)。吹风机(28)用于抽吸排放管(24)中的排放气体。因此,即使过滤器已开始被阻塞,仍可阻止在过滤器上游侧排放管内的压力上升。
Description
技术领域
本发明涉及一种生产碳微纤维、特别是直径均在0.4纳米至几十纳米的纳米管的装置,尤其涉及对合成碳微纤维的采集。
背景技术
已知一种生产直径均在0.4纳米至几十纳米的碳纳米管的方法,该方法以气相生长法为基础。在本说明书等类似文件中,碳纳米纤维的例子包括鱼骨石墨结构纳米管,该鱼骨石墨结构纳米管均为空心,即呈管状,但包括不与纤维轴平行的石墨层、非空心的带状石墨纤维、以及石墨须晶。由气相生长法生产的碳纳米管或碳纳米纤维需通过与气体分离而被采集。日本特开平2006-169002号专利公报公开了一种在诸如网状物或孔板的过滤器上捕集由载气携带的碳纳米管或纳米纤维的技术。当载气通过网状物等物体时,碳纳米管或纳米纤维就被捕集在网状物等物体上。
发明内容
当在捕集碳纳米管或纳米纤维的载气气流中设置一种诸如过滤器的障碍物时,碳纳米管或纳米纤维数量的增加会增大载气气流的通道阻力,由此增大过滤器上游侧的压力。该压力升高会增大合成碳纳米管或纳米纤维的反应器中的压力,或扰动反应器中的气流,由此影响生产工艺。
本发明的一个目的是降低碳纳米管或纳米纤维在过滤器上的捕集数量对碳纳米管或纳米纤维生产工艺的不利影响。
在本发明中,在排放管中设置用于捕集碳纳米管或纳米纤维的过滤器,该排放管与用于合成碳纳米管或纳米纤维的反应器连接,且来自反应器的含有合成碳纳米管或纳米纤维的载气经该排放管排出。在位于过滤器下游的排放管段中设置抽吸设备,用于抽吸排放管中的排放气体。
此外,可在位于过滤器上游的排放管段中设置用于检测排放管中压力的压力传感器。可提供用于控制抽吸设备的控制设备,以使检测压力等于预设值。
再者,可使用吹风机进行抽吸操作,以消除过滤器中的压力损失,从而保持反应器中的压力恒定。
本发明可降低碳纳米管或纳米纤维在过滤器上的捕集数量对碳纳米管或纳米纤维合成环境的不利影响。
附图说明
图1是本实施例所述的一种生产碳纳米管的装置的结构示意图。
标记说明
10碳纳米管生产装置;12反应器装置;14反应器管;16加热器;24排放管;26过滤器;28吹风机(抽吸设备);30压力传感器;32控制区
具体实施方式
下文将结合附图,对本实施方式的一实施例进行说明。图1是碳纳米管生产装置10的结构示意图。反应器装置12包括直立安装且获得供料的反应器管14、以及围绕反应器管14外围安装的加热器16。反应器管14由陶瓷制成,外形呈管状,优选为圆形管。反应器管14由加热器16加热,且被保持在预设温度。反应器管14包括位于顶部的供料喷嘴18,由供料装置20供应的物料通过该供料喷嘴18被喷射到反应器管14内。载气从载气供应装置22被输送到反应器管14的顶部,以包围注入物料。物料气体含有碳源、催化剂及其助剂。被输送到反应器管14中的物料和载气均在下行通过反应器管14的同时,被反应器管14的管壁加热。在下行期间,生长和合成碳纳米管。该方法被称为气相生长法。
生成的碳纳米管由载气、未反应的物料蒸汽和反应后的物料蒸汽携带到采集装置23中。采集装置23包括安装在排放管24中的过滤器26和作为抽吸设备的、用于抽吸被排放管道中废气的吹风机28,且该排放管24与反应器管14的底部连接。过滤器26捕集出现在排放气体中的碳纳米管。过滤器26优选呈弯曲状,以在使通道阻力最小的同时,增大表面积。吹风机28被安装在位于过滤器26更下游的排放管24段中。吹风机28抽吸来自吹风机安装位置上游处被排放管道24段的废气。即使过滤器26具有高的通道阻力,吹风机28也可使流经过滤器的排放气体以适当速率流动。此外,与未使用吹风机进行抽吸的结构相比,这种结构能够使操作不断进行,直到过滤器捕集到大量的碳纳米管。
可在位于过滤器26上游的排放管24段中设置压力传感器30,用于检测排放管24中的压力。用于控制吹风机28操作条件的控制区32根据由压力传感器检测到的排放管中的压力进行控制。优选控制吹风机28的转速,以使检测压力达到预设恒定值。可根据反应器管14中的反应条件确定该预设恒定值。为控制转速,可通过变换器向吹风机供电。将压力传感器30处的压力控制在恒定值可被认为是由吹风机消除过滤器26中的压力损失。
由于过滤器26上游排放管段中的压力保持恒定,所以在反应器管14中诸如气流和压力的反应条件稳定,因而提高了反应效率。这也阻止了碳纳米管附着在反应器管14的内壁上。
在本实施例中,已对基于气相生长法的碳纳米管生产装置进行了说明。然而,上述采集装置也可用于采用其他气相流反应法合成碳纳米管或其他碳纳米纤维的生产装置中。
Claims (5)
1.一种生产碳纳米管或碳纳米纤维的装置,包括:
反应器,该反应器可获得物料和载气供应,且可使物料反应,以合成碳纳米管或碳纳米纤维;
排放管,通过该排放管从所述反应器中排放出所述载气和由所述物料反应得到的含所述碳纳米管或碳纳米纤维的产物;
设置在所述排放管中的过滤器,用于捕集所述碳纳米管或碳纳米纤维;以及
设置在位于所述过滤器下游的所述排放管段中的抽吸设备,用于抽吸所述排放管中的所述载气等。
2.根据权利要求1所述的碳纳米管或碳纳米纤维生产装置,还包括:
设置在位于所述反应器与所述过滤器之间的所述排放管段中的压力传感器,用于检测这段排放管中的所述压力;以及
用于控制所述抽吸设备的控制区,以使由所述压力传感器检测到的所述压力被设定为预设值。
3.一种用于采集由反应器合成的碳纳米管或碳纳米纤维的碳纳米管或纳米纤维采集装置,所述碳纳米管或纳米纤维采集装置包括:
设置在排放管中的过滤器,该排放管与所述反应器连接,通过该排放管可排放来自所述反应器的含所述碳纳米管或碳纳米纤维的气体,且所述过滤器捕集所述碳纳米管或碳纳米纤维;以及
设置在位于所述过滤器下游的所述排放管段中的抽吸设备,用于抽吸所述排放管中的所述废气。
4.根据权利要求3所述的碳纳米管或碳纳米纤维采集装置,还包括:
设置在位于所述过滤器上游的所述排放管段中的压力传感器,用于检测这段排放管中的所述压力;以及
用于控制所述抽吸设备的控制区,以使由所述压力传感器检测到的所述压力被设定为预设值。
5.一种生产碳纳米管或碳纳米纤维的装置,包括:
反应器,该反应器可获得物料和载气供应,且可使物料反应,以合成碳纳米管或碳纳米纤维;
排放管,通过该排放管从所述反应器中排放出所述载气和由所述物料反应得到的含所述碳纳米管或碳纳米纤维的产物;
设置在所述排放管中的过滤器,用于捕集所述碳纳米管或碳纳米纤维;以及
抽吸设备,用于消除所述过滤器中的压力损失,以保持所述反应器中的压力恒定。
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PCT/JP2008/068786 WO2009081645A1 (ja) | 2007-12-26 | 2008-10-16 | カーボンナノチューブまたはカーボンナノファイバの製造装置、回収装置 |
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2008
- 2008-10-16 CA CA2700605A patent/CA2700605A1/en not_active Abandoned
- 2008-10-16 US US12/680,545 patent/US8178049B2/en not_active Expired - Fee Related
- 2008-10-16 JP JP2009546981A patent/JP5166445B2/ja not_active Expired - Fee Related
- 2008-10-16 RU RU2010110470/05A patent/RU2010110470A/ru unknown
- 2008-10-16 WO PCT/JP2008/068786 patent/WO2009081645A1/ja active Application Filing
- 2008-10-16 KR KR1020107007005A patent/KR20100092927A/ko not_active Application Discontinuation
- 2008-10-16 EP EP08865254A patent/EP2223891B1/en not_active Not-in-force
- 2008-10-16 CN CN200880110613A patent/CN101848859A/zh active Pending
- 2008-12-19 TW TW097149894A patent/TW200927643A/zh unknown
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2010
- 2010-03-21 IL IL204622A patent/IL204622A0/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102602912A (zh) * | 2012-03-15 | 2012-07-25 | 南昌大学 | 连续生产晶须状碳纳米管的合成装置 |
Also Published As
Publication number | Publication date |
---|---|
KR20100092927A (ko) | 2010-08-23 |
JP5166445B2 (ja) | 2013-03-21 |
EP2223891A1 (en) | 2010-09-01 |
RU2010110470A (ru) | 2012-02-10 |
US8178049B2 (en) | 2012-05-15 |
WO2009081645A1 (ja) | 2009-07-02 |
IL204622A0 (en) | 2010-11-30 |
EP2223891A4 (en) | 2011-06-08 |
TW200927643A (en) | 2009-07-01 |
US20100254860A1 (en) | 2010-10-07 |
JPWO2009081645A1 (ja) | 2011-05-06 |
CA2700605A1 (en) | 2009-07-02 |
EP2223891B1 (en) | 2012-09-05 |
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