【正文】 ............................................................ 17 聚合原理 ........................................................................................................................ 17 鏈引發(fā) ............................................................................................................................ 17 鏈增長 ............................................................................................................................ 18 鏈轉(zhuǎn)移 ............................................................................................................................ 19 向單體 VC 鏈轉(zhuǎn)移 —— 形成端基雙鍵 PVC ....................................................................... 19 向高聚物轉(zhuǎn)移 —— 形成支鏈或交聯(lián) PVC .......................................................................... 19 鏈終止 ............................................................................................................................ 19 對聚合度的影響 .............................................................................................................. 21 對 (視 )比重和吸油量的影響 ............................................................................................. 21 原料中雜質(zhì)的影響 ........................................................................................................ 21 乙炔對聚合反應(yīng)的影響 ................................................................................................. 21 聚氯乙烯生產(chǎn)工藝（懸浮聚合）流程簡述 ........................................................................... 22 聚氯乙烯生產(chǎn)工藝流程（懸浮聚合）操作步驟 ................................................................. 22 4 工藝計算 ................................................................................................................................... 23 生產(chǎn)規(guī)模 ........................................................................................................................... 23 生產(chǎn)時間 ........................................................................................................................... 23 聚氯乙烯配方 .................................................................................................................... 23 聚氯乙烯懸浮聚合操作周期 ............................................................................................... 23 相關(guān)技術(shù)指標(biāo) .................................................................................................................... 24 相關(guān)控制指標(biāo) .................................................................................................................... 24 工藝計算 ............................................................................................................................ 24 計算依 ........................................................................................................................... 24 低沸塔 ........................................................................................................................ 25 湖南科技大學(xué)本科生畢業(yè)設(shè)計（論文） 4 高沸塔 ............................................................................................................................ 27 聚合釜物料衡算 .............................................................................................................. 30 熱量衡算 ........................................................................................................................ 33 5 聚合釜的設(shè)計 ............................................................................................................................ 35 生產(chǎn)周期或生產(chǎn)批數(shù) ......................................................................................................... 35 根據(jù)年產(chǎn)量確定每批進(jìn) 料量 ............................................................................................... 35 選擇反應(yīng)器裝料系數(shù) ......................................................................................................... 35 計算反應(yīng)器體積 ................................................................................................................ 36 聚合釜壁厚的計算 ............................................................................................................. 36 計算厚度 ..................................................................................................................... 36 校核水壓實驗強度 ....................................................................................................... 37 夾套的設(shè)計 ....................................................................................................................... 37 夾套直徑和高度的確定 ................................................................................................ 37 夾套的材料和壁厚 ....................................................................................................... 37 校核水壓實驗強度： ................................................................................................... 38 攪拌裝置 [10]的設(shè)計 ...................................................................................................... 38 傳熱裝置的校核 ................................................................................................................ 39 釜側(cè)的給熱系數(shù) .......................................................................................................... 39 夾套側(cè)的傳熱系數(shù)的計算 ............................................................................................ 41 已知聚合釜的壁厚 ....................................................................................................... 41 忽略污垢的熱阻 .......................................................................................................... 41 底座的選擇 ....................................................................................................................... 42 聚合釜技術(shù)參數(shù) ................................................................................................................ 42 人孔的設(shè)計 ..................................................................................................................... 43 6 干燥裝置的設(shè)計 ....................