年產(chǎn)量30萬(wàn)噸液氨脫硫工段工藝設(shè)計(jì)畢業(yè)論文(已修改)

　

【正文】 年產(chǎn)量 30 萬(wàn)噸液氨脫硫工段工藝設(shè)計(jì) The Process Design of Ammonia Desulfurization Section For 300000 tons per year 目 錄 摘要 ： ............................................................................................................... I Abstract ............................................................................................................ II 引 言 ............................................................................................................. 1 第一章 概 述 ............................................................................................................................ 2 半水煤氣凈化的現(xiàn)狀 ...................................................................................................... 2 栲膠的認(rèn)識(shí) ...................................................................................................................... 2 栲膠法脫硫的優(yōu)缺點(diǎn) ..................................................................................................... 3 優(yōu)點(diǎn) ............................................................................................................................... 3 缺點(diǎn) ............................................................................................................................... 4 硫化物對(duì)作為原料氣生產(chǎn)工藝過(guò)程的危害 ............................................................... 4 半水煤氣脫硫系統(tǒng)的正常開(kāi)車操作要點(diǎn) ................................................................... 4 脫硫后硫化氫含量高的主要原因 ............................................................................... 5 脫硫后硫化氫含量高的處理方法 ............................................................................... 5 第二章 生產(chǎn)流程說(shuō)明 ..................................................................................... 6 反應(yīng)機(jī)理 .......................................................................................................................... 6 主要操作條件 .................................................................................................................. 6 工藝流程 ......................................................................................................................... 7 主要設(shè)備介紹 .................................................................................................................. 8 脫硫塔 ........................................................................................................................... 8 氧化槽 ........................................................................................................................... 9 反應(yīng)槽 ........................................................................................................................... 9 貧液泵 ........................................................................................................................... 9 硫泡沫槽 ..................................................................................................................... 10 過(guò)濾器 ......................................................................................................................... 10 熔硫釜 ........................................................................................................................ 10 第三章 工藝計(jì)算 ............................................................................................ 11 物料衡算 ....................................................................................................................... 11 基礎(chǔ)數(shù)據(jù) .................................................................................................................... 11 計(jì)算原料氣的體積及流量 ........................................................................................ 11 熱量衡算（以 0℃為計(jì)算基 準(zhǔn)） ................................................................................ 14 基礎(chǔ)數(shù)據(jù) .................................................................................................................... 14 換熱器熱量衡算 ........................................................................................................ 17 熔硫釜熱量衡算 ........................................................................................................ 17 第四章 主要設(shè)備的工藝尺寸和選型 .............................................................. 19 填料脫硫塔設(shè)計(jì)計(jì)算 .................................................................................................... 19 塔徑的確定 ................................................................................................................. 19 填料層高度計(jì)算 ......................................................................................................... 20 壓降的計(jì)算 ................................................................................................................. 21 輔助設(shè)備的計(jì)算選型 ................................................................................................... 23 液體分布裝置（噴淋裝置） .................................................................................... 23 液體再分布器 ............................................................................................................. 23 填料支承板 ................................................................................................................. 23 封頭 ............................................................................................................................. 24 裙座 ............................................................................................................................. 24 人孔，手孔 ................................................................................................................ 25 第五章 機(jī)械強(qiáng)度校核計(jì)算 ............................................................................. 26 壁厚的計(jì)算 .................................................................................................................... 26 塔體壁厚 ..................................................................................................................... 26 封頭壁厚 ....