【正文】 ....................................................................................................32 壓力 ..........................................................................................................................................................................................................33 H2O／ CO ................................................................................................................................................................................................33 第三章 工藝計算 ............................................................................................................... .....................................................34 ...........................................................................................................................................................................35 計算基準及已知條件 ...........................................................................................................................................................35 全工段物料及變換 率計算 ..............................................................................................................................................35 1變換爐一段計算 ......................................................................................................................... 37 1變換爐二段計算 ..................................................................................................................................................................42 2變換爐計算 ...............................................................................................................................................................................49 增濕器物料及熱量衡算 ...................................................................................................................................................52 ...................................................................................................................................................................................................57 主換熱器 .............................................................................................................................................................................................57 次換熱器 ...........................................................................................................................................................................................59 催化劑計算 ....................................................................................................................................................................................62 第四章 非工藝部分 ............................................................................................................................................................72 ............................................................................................................................................................72 廢水 ..........................................................................................................................................................................................................72 廢氣 ........................................................................................................................................................................................................72 廢渣 ........................................................................................................................................................................................................73 噪聲 ..........................................................................................................................................................................................................73 ...................................................................................................................................................................................73 參考文 獻 ……… .…. … ........................................................................................................................................................................74 附錄 ……………………………………………………………………………………………………………………………………… .75 年產(chǎn) 10萬噸合成氨工程項目變換工序工藝設(shè)計（論文） III 年產(chǎn) 10 萬噸合成氨工程項目工藝設(shè)計 （重點工序：變換工序， CO 進口含量： %） 摘要 合成氨生產(chǎn)工序主要有原料氣的制取、原料氣的凈化和氨合成，原料氣的凈化又分為原料氣的脫硫、 CO 變換、脫碳和精制。本設(shè)計采用 UGI 爐制氣，栲膠法脫硫，全低變工藝去除 CO，變壓吸附法脫碳，醇烴化法精制原料氣。變換工序的作用是去除掉原料氣中的 CO。 CO 不是氨合成的原料，它能使氨合成催化劑中毒而失去活性。因此，原料氣進入氨合成系統(tǒng)前必須除去掉 CO。 本設(shè)計主要分為總論部分、工藝部分、工藝計算和非工藝部分。總論部分主要介紹了設(shè)計對象規(guī)格， 建廠位置的選擇，全廠生產(chǎn)路 線的選擇論證等； 工藝部分著重介紹變換工序，工藝計算部分確定了變換系統(tǒng)進、出口溫度， CO 轉(zhuǎn)換率，總蒸汽用量，催化劑用量及催化劑阻力等。非工藝部分主要介紹了工廠廢物的處理。 全低變工藝優(yōu)點： ① 催化劑的起始活性溫度低； ② 變換爐系統(tǒng)處于較低的溫度范圍內(nèi)操作，降低了入爐蒸汽量，使全低變流程蒸汽消耗降低。 關(guān)鍵詞 :合成氨，變換工序，全低變 年產(chǎn) 10萬噸合成氨工程項目變換工序工藝設(shè)計（論文） IV Technological design of 100kt/a synthetic ammonia engineering project (key process : transform process,CO content:%) Abstract Ammonia production processes are mainly the production, gas material feedgas of purification and ammonia synthesis gas purification, raw material is divided again the gas material for desulphurization and CO transformation, decarburization and refined. This design USES the UGI furnace gasification, vegetable tannin extracts desulphurization process, all the low change remove CO, variable pressure adsorption decarburization, alcohol alkylating method refined raw gas. Transformation process is the role of the CO feedgas away. CO not ammonia synthesis of raw materials, it can make ammonia synthesis catalyst poisoning and lose activity. Therefore, the feedgas into ammonia synthesis system must be in addition to remove CO. Before This design mainly divided into general part, process parts, technical calculation and the craft parts. General parts mainly introduced the design