工業(yè)酒精的提-資料下載頁
2024-12-28 13:53本頁面
【正文】 度下降到沸點(diǎn)以 下 ),方可加入沸石 ? 當(dāng)燒瓶中的物料變?yōu)楹隣钗飼r(shí) ,表示蒸餾已接近尾聲 .此時(shí) ,應(yīng)立即停止加熱 ,利用電熱套的余溫將剩余的液體蒸出 ,以避免燒瓶過熱破裂 . ? 蒸餾時(shí)液體不能蒸干 ,即使溫度計(jì)讀數(shù)仍在沸點(diǎn)范 圍內(nèi) ,也應(yīng)在被蒸液體剩 ～1 mL時(shí)停止蒸餾 ,以免 餾瓶破裂或發(fā)生其他意外事故 . ? Must be in a flask join zeolite, to prevent the backflow and distillation process occurs blasting boiling. ? Zeolite in heating before joining, should be in distillation process, if discover did not add boiling stone, it should first stop heating, slightly cold (stay liquid temperature dropped to under the boiling point), fangke join zeolite ? When the material into mush flask, said distillation is nearing an end. In this case, you must stop using electric heating of threads will surplus liquid steamed out, in order to avoid overheating rupture flask. ? Distill liquid cannot zhenggan even thermometer readings is still in the boiling point van wai, also should be within the steamed liquid left by ~ 1 mL when you stop distillation, lest fractions bottle burst or the occurrence of other accident. 資料來源 REFERENCES 通過上網(wǎng)，百度搜索得到的資料 .html 謝謝觀看 /歡迎下載 BY FAITH I MEAN A VISION OF GOOD ONE CHERISHES AND THE ENTHUSIASM THAT PUSHES ONE TO SEEK ITS FULFILLMENT REGARDLESS OF OBSTACLES. BY FAITH I BY FAITH
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