摘要：通過分析國內(nèi)外碳酸二甲酯生產(chǎn)工藝的現(xiàn)狀，采用尿素醇解法來生產(chǎn)碳酸二甲酯，針對目前生產(chǎn)工藝中存在的幾個難點問題進行工藝的改進，采用Aspen 軟件對年產(chǎn) 1.5 萬噸碳酸二甲酯生產(chǎn)工藝進行了模擬計算，經(jīng)過改進后的生產(chǎn)工藝可使碳酸二甲酯的純度達到 99.8%，通過分析目前市場行情估算整個項目的經(jīng)濟投資，通過 Aspen 軟件對整個流程進行物料衡算，熱量衡算，設備的計算等。關鍵詞：碳酸二甲酯；尿素醇解法；生產(chǎn)工藝；Aspen 軟件；經(jīng)濟分析； Abstract: Analyse DMC production technology at home and abroad, using Urea alcoholysis to produce DMC. To improve technology to solve some promble which exist presently. Using Aspen software to simulate technology flow of DMC. After the production technololy’s ameliorate, the DMC content is reach at 99.8%. Estimate economy of the whole project through market analysis. Using Aspen software to get material balance, heat balance and equipment data etc.Keywords: DMC; Urea alcoholysis;Production technology; Aspen software; Economy analysis目 錄1 總論 ............................................................................................................................11.1 碳酸二甲酯的性質和用途 ................................................................................................................11.2 碳酸二甲酯的市場分析 ....................................................................................................................11.2.1 國外產(chǎn)能情況及需求預測 ..........................................................................................................11.2.2 國內(nèi)產(chǎn)能情況及需求預測 ..........................................................................................................11.2.3 廠址選擇 ......................................................................................................................................12 碳酸二甲酯生產(chǎn)工藝 ................................................................................................22.1 工藝方案的選擇 .................................................................................................................................22.2 碳酸二甲酯生產(chǎn)工藝 ........................................................................................................................22.2.1 反應流程 .....................................................................................................................................22.2.2 反應條件及能耗 ..........................................................................................................................32.2.3 反應主要設備 ..............................................................................................................................32.2.4 催化劑的比較與選擇 ..................................................................................................................32.2.5 膜的要求 .....................................................................................................................................32.2.6 膜的選擇 ......................................................................................................................................43 投資與經(jīng)濟分析 ........................................................................................................63.1 總投資 .................................................................................................................................................63.1.1 總設備投資費用計算 ..................................................................................................................63.1.2 其它固定資產(chǎn)投資 ......................................................................................................................83.1.3 固定資產(chǎn)折舊費 .........................................................................................................................83.1.4 維修費用 .....................................................................................................................................93.1.5 原料費用 .....................................................................................................................................93.1.6 人事費用 .....................................................................................................................................93.1.7 能源的消耗 ................................................................................................................................113.1.8 無形資產(chǎn) ...................................................................................................................................123.1.9 總投資費用 ...............................................................................................................................123.2 總收益估算 .......................................................................................................................................123.2.1 投資額的確定 ...........................................................................................................................123.3 資金籌措 ...........................................................................................................................................133.4 經(jīng)濟分析 ...........................................................................................................................................133.4.1 投資回收期 ................................................................................................................................133.4.2 投資凈現(xiàn)值 ...............................................................................................................................133.4.3 內(nèi)部收益率 ...............................................................................................................................134 物料衡算 ..................................................................................................................134.1 流程簡述 ...........................................................................................................................................134.2 碳酸二甲酯合成及分離工段 ...........................................................................................................134.3 反應精餾塔物料衡算 .......................................................................................................................144.4 共沸精餾塔物料衡算 .......................................................................................................................154.5 膜分離器物料衡算 ..........................................................................................................................154.6 萃取精餾塔物料衡算 .......................................................................................................................164.7 萃取劑回收塔物料衡算 ...................................................................................................................164.8 DMC 精制塔物料衡算 .....................................................................................................................174.9 甲醇精制塔物料衡算 .......................................................................................................................184.10 總流程物料衡算 .............................................................................................................................185 熱量衡算 ..................................................................................................................205.1 HEATER1 熱量衡算 .........................................................................................................................205.2 HEATER2 熱量衡算 .........................................................................................................................205.3 CONDENSE 熱量衡算 .....................................................................................................................215.4 HEATX1 熱量衡算 ...........................................................................................................................225.5 HEATX2 熱量衡算 ...........................................................................................................................225.6 SEP1 熱量衡算 ..................................................................................................................................235.7 SEP2 熱量衡算 ..................................................................................................................................235.8 T1 熱量衡算 ......................................................................................................................................245.9 T2 熱量衡算 ......................................................................................................................................255.10 T3 熱量衡算 ....................................................................................................................................255.11 T4 熱量衡算 ....................................................................................................................................265.12 T5 熱量衡算 ....................................................................................................................................276 主要設備設計與選型 ..............................................................................................286.1 泵的選型舉例 ..................................................................................................................................286.2 換熱器的選型舉例 ..........................................................................................................................346.3 精餾塔的設計舉例 ..........................................................................................................................366.3.1 精餾塔 T1 設計數(shù)據(jù) ..................................................................................................................366.3.2 精餾塔 T2 設計數(shù)據(jù) .................................................................................................................386.3.3 精餾塔 T5 設計數(shù)據(jù) .................................................................................................................406.2 非標準設備設計 ..............................................................................................................................436.2.1 反應精餾塔 ...............................................................................................................................436.2.2 尿素熔融裝置 ...........................................................................................................................446.3 設備一覽表 ......................................................................................................................................457 管道特性表 ..............................................................................................................47參考文獻 ......................................................................................................................49謝　　 辭 ......................................................................................................................51附圖一：帶控制點工藝流程圖附圖二：反應精餾塔裝置圖附圖三：萃取精餾塔裝置圖附圖四：尿素熔融裝置圖附圖五：換熱器裝置圖附圖六：總廠平面圖1