【正文】 是將合成氨原料氣中的有害成分碳脫除。 本 科 畢 業(yè) 設(shè) 計(jì) 年產(chǎn) 30 萬噸合成氨原料氣脫碳工段工藝設(shè)計(jì) Decarbonization Process design on synthetic ammonia At an output of 300,000 t/a 目 錄 摘要 ................................................................................................................................................. I Abstract ......................................................................................................................................... II 引言 ................................................................................................................................................ 1 第一章 總 論 ........................................................................................................................... 2 概 述 ............................................................................................................................... 2 氨的性質(zhì) ........................................................................................................................ 2 氨的用途及在化工生產(chǎn)中的地位 ................................................................................ 2 合成氨的發(fā)展歷史 ........................................................................................................... 3 氨氣的發(fā)現(xiàn) .................................................................................................................... 3 合成氨的發(fā)現(xiàn)及其發(fā)展 ................................................................................................ 3 世界合成氨工業(yè)發(fā)展 .................................................................................................... 3 文獻(xiàn)綜述 ........................................................................................................................... 4 合成氨脫碳 ..................................................................................................................... 4 合成氨脫碳的方法概述 ................................................................................................. 5 設(shè)計(jì)的依據(jù) ....................................................................................................................... 5 第二章 流程方案的確定 ........................................................................................................ 6 各脫碳方法對(duì)比 ................................................................................................................ 6 化學(xué)吸收法 ..................................................................................................................... 6 物理吸收法 ..................................................................................................................... 6 物理化學(xué)吸收法 ............................................................................................................. 7 碳酸丙烯酯（ PC）法脫碳工藝基本原理 ....................................................................... 8 PC 法脫碳技術(shù)國(guó)內(nèi)外現(xiàn)狀 ........................................................................................... 8 發(fā)展過程 ......................................................................................................................... 8 技術(shù)經(jīng)濟(jì) ......................................................................................................................... 9 第三章 生產(chǎn)流程的簡(jiǎn)述 ........................................................................................................ 6 氣體流程 ......................................................................................................................... 10 原料氣流程 .................................................................................................................. 10 解吸氣體回收流程 ...................................................................................................... 10 液體流程 .......................................................................................................................... 10 碳酸丙烯酯脫碳流程簡(jiǎn)述 .......................................................................................... 10 稀液流程循環(huán) ...............................................................................................................11 存在的問題及解決的辦法 ...............................................................................................11 綜合分析 PC 法脫碳存在的主要問題有 .....................................................................11 解決辦法 ........................................................................................................................11 第四章 物料衡算和熱量衡算 ............................................................................................. 13 工藝參數(shù)及指標(biāo) .............................................................................................................. 13 計(jì)算依據(jù) CO2 在 PC 中的溶解度關(guān)系 ....................................................................... 13 PC 的密度與溫度的關(guān)系 ............................................................................................. 14 PC 的蒸汽壓 ................................................................................................................. 14 PC 的黏度 ..................................................................................................................... 14 物料衡算 .......................................................................................................................... 14 各組分在 PC 中的溶解量 ............................................................................................ 14 溶劑夾帶量 ................................................................................................................... 15 溶液帶出的氣量 ........................................................................................................... 15 出脫碳塔凈化氣量 ....................................................................................................... 15 計(jì)算 PC 循環(huán)量 ...................................................................................