【正文】 ............................................ 3 合成工藝條件的選擇 ....................................................................................................... 4 操作壓力 ........................................................................................................................ 4 反應(yīng)溫度 ........................................................................................................................ 4 空速 ................................................................................................................................ 4 合成塔進(jìn)口氣體組成 .................................................................................................... 4 合成氨工業(yè)的發(fā)展 ........................................................................................................... 5 第二章 合成工段工藝簡介 ................................................................................................... 6 合成工段工藝流程簡述 .................................................................................................. 6 工藝流程方框簡圖 .......................................................................................................... 6 設(shè)備簡述 .......................................................................................................................... 7 氨合成塔 ....................................................................................................................... 7 熱交換器與廢熱鍋爐 ................................................................................................... 7 冷交換器 ....................................................................................................................... 7 氨冷器 ........................................................................................................................... 7 第三章 工藝設(shè)計(jì)計(jì)算 ............................................................................................................ 8 設(shè)計(jì)要求 .......................................................................................................................... 8 2 工藝流程圖 ...................................................................................................................... 8 物料計(jì)算 .......................................................................................................................... 8 合成塔入口氣體組分 .................................................................................................... 8 合成塔出口氣體組分 ................................................................................................... 9 合成率 ........................................................................................................................... 9 氨分離器氣液平衡計(jì)算 ............................................................................................... 9 冷交換器氣液平衡計(jì)算 ............................................................................................. 11 液氨儲槽氣液平衡計(jì)算 ............................................................................................. 12 液氨儲槽物料計(jì)算 ..................................................................................................... 15 合成系統(tǒng)物料計(jì)算 ..................................................................................................... 16 合成塔物料計(jì)算 ......................................................................................................... 17 水冷器物料計(jì)算 ....................................................................................................... 18 氨分離器物料計(jì)算 ................................................................................................... 19 冷交換器物料計(jì)算 ................................................................................................... 19 氨冷器的物料計(jì)算 ................................................................................................... 21 冷交換器物料計(jì)算 ................................................................................................... 23 液氨貯槽物料計(jì)算 ................................................................................................... 25 熱量衡算 ........................................................................................................................ 27 冷交換器熱量計(jì)算 ..................................................................................................... 27 氨冷凝器熱量計(jì)算 ..................................................................................................... 30 循環(huán)機(jī)熱量計(jì)算 ......................................................................................................... 32 合成塔熱量衡算 ......................................................................................................... 33 廢熱鍋爐熱量計(jì)算： ................................................................................................. 35 熱交換器熱量計(jì)算 ..................................................................................................... 36 水冷器熱量衡算： ..................................................................................................... 37 氨分離器熱量衡算： ................................................................................................. 38 第四章 設(shè)備的選型與計(jì)算 ................................................................................................. 40 設(shè)備選型 ........................................................................................................................ 40 設(shè)備簡述 ..................................................................................................................... 40 流程說明 ..................................................................................................................... 40 3 合成塔設(shè)計(jì) .................................................................................................................... 40 合成塔筒體設(shè)計(jì) ......................................................................................................... 40 催化劑層設(shè)計(jì) .......................................................