【正文】 to the material and heat balance data, we can calculate the relevant size date of the adiabatic bed and heat exchanger during the internal parts,and design and select so me auxiliary equipment. Key Words: Synthetic ammonia。本設(shè)計主要 目的是對合成氨的合成工段進行設(shè)計，根據(jù)已給組成的原料氣的組成，進行工藝系統(tǒng)計算，包括物料衡算、熱量衡算、設(shè)備的數(shù)據(jù)計算及選型等。 年產(chǎn) 30萬噸合成氨合成工段工藝設(shè)計 目 錄 摘要 ................................................................................................................................................. I Abstract........................................................................................................................................ II 引 言 ........................................................................................................................................... 1 第一章 合成氨綜述 ................................................................................................................. 2 氨的用途 ........................................................................................................................... 2 氨的性質(zhì) ........................................................................................................................... 2 氨的物理性質(zhì) ................................................................................................................ 2 氨的化學(xué)性質(zhì) ................................................................................................................ 2 合成氨的生產(chǎn)方法 ........................................................................................................... 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)計計算 ............................................................................................................. 8 設(shè)計要求 .......................................................................................................................... 8 2 工藝流程圖 ...................................................................................................................... 8 物料計算 .......................................................................................................................... 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算 ............................................................................................... 9 冷交換器氣液平衡計算 ............................................................................................. 11 液氨儲槽氣液平衡計算 ............................................................................................. 12 液氨儲槽物料計算 ..................................................................................................... 15 合成系統(tǒng)物料計算 ..................................................................................................... 16 合成塔物料計算 ......................................................................................................... 17 水冷器物料計算 ....................................................................................................... 18 氨分離器物料計算 ................................................................................................... 19 冷交換器物料計算 ................................................................................................... 19 氨冷器的物料計算 ................................................................................................... 21 冷交換器物料計算 ................................................................................................... 23 液氨貯槽物料計算 ................................................................................................... 25 熱量衡算 ........................................................................................................................ 27 冷交換器熱量計算 ..................................................................................................... 27 氨冷凝器熱量計算 ...............................................................................................