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热解技术是回收废弃印刷电路板的有效方法之一。热解后，废弃印刷电路板中的有机树脂降解成小分子的石油产品, 同时与无机惰性组分的分离。已有的文献报道表明,目前大部分关于废弃印刷电路板的热解研究都是在惰性气氛下进行, 惰性气氛下热解的缺点是热解产物从样品内部扩散到能够被惰性气体带走的位置需要的时间较长, 容易发生二次裂解反应,且会产生大量的含卤气体待处理。 与通常以惰性气体(主要是氮气)作为载气的热解技术相比, 真空热解具有优越性。真空条件下能缩短热解气在高温反应区的停留时间,减少二次裂解反应的发生, 达到增加热解油的产率和价值的目的；此外，避免了引入气体载体花费的成本。 |
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210jiejie(金币+26,VIP+0):非常感谢 4-2 15:38
telomerase(金币-26,VIP+0):非法转移金币，扣除了！！！ 4-2 21:18
telomerase(金币-26,VIP+0):非法转移金币，扣除了！！！ 4-2 21:18
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Pyrolysis technology is one of the effective ways that recycle the printed circuit board. Pyrolysis, discarded printed circuit boards in the degradation of organic resin into small molecules of petroleum products, and at the same time inorganic inert component of the separation. The literature shows that have been reported, most of the current on the printed circuit board scrap the pyrolysis research is carried out in an inert atmosphere, an atmosphere of inert pyrolysis drawback is that the pyrolysis product sample from spread to the internal inert gas can be taken away Location of the need for a longer period of time, prone to cracking the second reaction, and will emit a large amount of halogen-containing gas to be processed. vacuum is administered to the pyrolysis reaction, which can make the volatiles generated from the first pyrolysis process rapidly leave from the interior and surface of the particles, and it helps to the liquefaction process as it can achieve "fast pyrolysis" more easily, what’s more, it suppresses the secondary cracking reactions, especially reduces the occurrence probability of hydrogen halide to form halohydrocarbon, and also improves the yield of pyrolysis oil. As the vacuum pyrolysis technology does not require any inert gas, it can reduce the treatment costs and can significantly improve the purity of the product of pyrolysis gas. Therefore, contrasting to the pyrolysis technologies which use an inert gas as carrier gas, vacuum pyrolysis has more advantages. |
6楼2009-04-02 15:36:57
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wfcicsd(金币-1,VIP+0):请勿使用翻译软件，那样会误人误事的！
wfcicsd(金币-1,VIP+0):请勿使用翻译软件，那样会误人误事的！
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Pyrolysis waste recycling technology is one of the effective ways that recycle the printed circuit board. Pyrolysis, discarded printed circuit boards in the degradation of organic resin into small molecules of petroleum products, and at the same time inorganic inert component of the separation. The literature shows that have been reported, most of the current on the printed circuit board scrap the pyrolysis research is carried out in an inert atmosphere, an atmosphere of inert pyrolysis drawback is that the pyrolysis product sample from spread to the internal inert gas can be taken away Location of the need for a longer period of time, prone to cracking the second reaction, and will emit a large amount of halogen-containing gas to be processed. And the usually inert gas (mainly nitrogen) as the carrier gas pyrolysis technology, has the advantages of vacuum pyrolysis. Vacuum conditions to reduce the high temperature pyrolysis reaction zone and the length of stay and reduce the occurrence of secondary cracking reaction to the increase in the pyrolysis oil yield and value of purpose; In addition, to avoid the introduction of gas cost carrier costs. |
2楼2009-01-02 11:34:49
谢谢上楼，但是你的翻译是google上粘贴而来的
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3楼2009-01-02 12:12:26
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
telomerase(金币+5,VIP+0):thanks 2-9 15:47
210jiejie(金币+2,VIP+0):xiexie 4-2 15:38
telomerase(金币+21,VIP+0):劳动所得，请收下！！ 4-2 21:22
telomerase(金币+5,VIP+0):thanks 2-9 15:47
210jiejie(金币+2,VIP+0):xiexie 4-2 15:38
telomerase(金币+21,VIP+0):劳动所得，请收下！！ 4-2 21:22
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这是第一段： Pyrolysis technology is one of the effective methods of recovering abandoned printed circuit board. Organic resin in abandoned printed circuit board becomes small molecule petroleum products by degradation after pyrolysis, at the same time inorganic inert component separated . Existing documents reported show that most of the pyrolysis research about abandoned printed circuit board are carried out in inert atmosphere at present. pyrolysis in inert atmosphere owns shortcomings that the time needed is longer that pyrolysis products diffuse to location in which it can be take away by inert gas from sample inside, second cleavage reaction can occur easily amd a great deal of gas with brine will product needed to deal with. |
4楼2009-01-03 07:50:27