【正文】 江蘇大學(xué)本科畢業(yè)論文I8kt/a 聚丙烯工段設(shè)計(jì)摘要：本設(shè)計(jì)是年產(chǎn) 8 千噸的聚丙烯工段設(shè)計(jì)，設(shè)計(jì)中按照生產(chǎn)負(fù)荷和設(shè)計(jì)規(guī)范，對(duì)聚丙烯生產(chǎn)的工藝流程進(jìn)行了合理的設(shè)計(jì)和適當(dāng)?shù)恼{(diào)整；對(duì)反應(yīng)釜、閃蒸釜生產(chǎn)流程的主要設(shè)備，進(jìn)行了工藝尺寸的設(shè)計(jì)計(jì)算，特別對(duì)結(jié)構(gòu)較復(fù)雜的反應(yīng)釜器內(nèi)的攪拌裝置、指形撤熱管以及夾套也進(jìn)行了工藝尺寸的計(jì)算；選擇旋風(fēng)分離器進(jìn)行工藝尺寸的設(shè)計(jì)計(jì)算，并對(duì)冷水泵進(jìn)行了選型?？紤]到設(shè)備加工制造、安裝、安全等多方面的因素，并依據(jù)任務(wù)所給的量，采用三個(gè)反應(yīng)釜并聯(lián)和兩個(gè)閃蒸釜并聯(lián)的工藝過程，并進(jìn)行了相應(yīng)的物料衡算和熱量衡算。關(guān)鍵詞：聚丙烯；聚合；閃蒸去活；丙烯江蘇大學(xué)本科畢業(yè)論文II目 錄第一章 液體本體法工藝技術(shù)說明 ..................................................................................................1 工藝流程 .................................................................................................................................1 原料精制 ..................................................................................................................................1 丙烯聚合 .............................................................................................................................1 閃蒸去活 .............................................................................................................................1 造粒包裝 .............................................................................................................................2 工藝說明 .....................................................................................................................................2 原料精制 .....................................................................................................................................3 精制的目的與要求 .............................................................................................................3 丙烯干燥 .............................................................................................................................3 吸附劑的活化再生 .............................................................................................................4 丙烯脫氧與脫硫 .................................................................................................................5 流程選擇 .............................................................................................................................5 氮?dú)饩?.............................................................................................................................6 丙烯聚合 .....................................................................................................................................7 生產(chǎn)方法和基本原理 .........................................................................................................7 聚合反應(yīng)影響因素 .............................................................................................................8第二章 液相本體法聚丙烯裝置設(shè)計(jì)計(jì)算 .......................................................................................14 聚合釜的工藝設(shè)計(jì)計(jì)算 ...........................................................................................................14 聚合釜容積的確定 ...........................................................................................................14 聚合釜外形尺寸的設(shè)計(jì) ...................................................................................................15 其他外形尺寸的確定 ........................................................................................................17 內(nèi)構(gòu)件及攪拌軸封的設(shè)計(jì) .......................................................................................................18 聚合釜的傳熱設(shè)計(jì) ...................................................................................................................22 反應(yīng)放熱計(jì)算 ...................................................................................................................22 攪拌摩擦熱 Qa 計(jì)算 ..........................................................................................................23 聚合高峰期總發(fā)熱量 QT 計(jì)算 .........................................................................................23 撤熱量 QT’計(jì)算 ................................................................................................................23 傳熱系數(shù) K的求取 ...........................................................................................................23 傳熱方式選擇及傳熱面積計(jì)算 .......................................................................................24 夾套及內(nèi)冷卻管的設(shè)計(jì) ...........................................................................................................25 夾套的設(shè)計(jì) .......................................................................................................................25 指形內(nèi)冷卻管設(shè)計(jì) ...........................................................................................................26江蘇大學(xué)本科畢業(yè)論文III第三章 聚丙烯工藝物料恒算 ...........................................................................................................29 丙烯投料量的計(jì)算 ...................................................................................................................29 催化劑用量的計(jì)算 ...................................................................................................................30 活化劑用量的計(jì)算 ...................................................................................................................31 氫氣用量的計(jì)算 .......................................................................................................................31 轉(zhuǎn)化率的計(jì)算 ...........................................................................................................................32 催化效率的計(jì)算 .......................................................................................................................33 平均活性 ...................................................................................................................................33 聚合釜的生產(chǎn)強(qiáng)度 ...................................................................................................................34 產(chǎn)品中理論含鈦量的計(jì)算 .......................................................................................................34第四章 旋風(fēng)分離器及冷水泵的設(shè)計(jì) ...............................................................................................36 旋風(fēng)分離器設(shè)計(jì)依據(jù) ..........................................................................