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在運用實(shí)驗室反應釜要注意哪些事項

來(lái)源: 時(shí)間:2012-09-17 10:11:49 瀏覽次數:

反應釜用于多種化學(xué)物質(zhì)進(jìn)行化學(xué)反應,以生成新的化學(xué)物質(zhì)之用。在選用或設計反應釜時(shí)要滿(mǎn)足能夠耐參與反應的各種物質(zhì)的反應溫度、壓力、腐蝕性,包括反應前投料狀態(tài)以及反應過(guò)程中新產(chǎn)生的升溫、升壓、新的物質(zhì)。
反應釜用于多種化學(xué)物質(zhì)進(jìn)行化學(xué)反應,以生成新的化學(xué)物質(zhì)之用。在選用或設計反應釜時(shí)要滿(mǎn)足能夠耐參與反應的各種物質(zhì)的反應溫度、壓力、腐蝕性,包括反應前投料狀態(tài)以及反應過(guò)程中新產(chǎn)生的升溫、升壓、新的物質(zhì)。實(shí)驗室用的反應釜與一般工業(yè)用的反應釜有許多相同之處,但除了容積較小以外,對耐溫、耐壓要求更高。尤其是在實(shí)驗室做探索性的試驗時(shí),往往要考慮該化學(xué)反應有無(wú)發(fā)生反應過(guò)于激烈,產(chǎn)生高熱從而引起高壓的爆聚,因為這有安全問(wèn)題。下面是一般應考慮的幾個(gè)方面: 
1、釜的設計壓力應高于試驗過(guò)程可能達到的壓力,且有安全余量;
2、釜體設計溫度應滿(mǎn)足試驗過(guò)程可能達到的溫度;
3、釜的材料(或襯里材料)應滿(mǎn)足對反應物料的耐腐蝕性能;
4、試驗過(guò)程的攪拌要求及攪拌裝置的密封形式;
5、需要觀(guān)察反應過(guò)程的要設觀(guān)察視鏡;
6、需要進(jìn)行加熱或冷卻的要有加熱或冷卻夾套和保溫;
7、根據反應后出料和清洗的難易而考慮頂、底蓋的可拆形式;
8、如反應過(guò)程有易燃易爆介質(zhì)應設置防爆或泄爆裝置;
9、釜的容積應大于每釜試驗物料體積20%以上;
10、其他需要考慮的特殊要求。
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