【正文】 vaporation section according to the requirements of the alkali liquor evaporation concentration from 32% to piece of alkali design can meet the needs of the evaporation of doubleeffect countercurrent evaporation process, at the same time the process can meet the needs of evaporation section. According to the calculation of the data , a set of evaporation chamber as the diameter of m, m high, heating chamber for the outside diameter of m high, 4 m forced circulation evaporator has been designed . Finally, according to calculation result and literature by reference to 93 standard, the technology flow chart with control points and equipment has been draw in this design. Key words: refined salt。設(shè)計出一套蒸發(fā)室為直徑 高 ，加熱室為直徑 高 4m 的強制外循環(huán)蒸發(fā)器。通過查閱文獻期刊，選擇出最先進同時也是最適合該年產(chǎn)量的氯工程 nBiTAC 電解槽。文中系統(tǒng)的介紹了離子膜燒堿的生產(chǎn)工藝，對鹽水精制、電解、蒸發(fā)、片堿工段做了工藝流程的設(shè)計和選擇。 年產(chǎn)十萬噸燒堿工藝設(shè)計 The Process Design of Caustic Soda Based on 100kt/a 目 錄 摘要 ........................................................... I Abstract ...................................................... Ⅱ 引言 ........................................................... 1 第一章 工藝路線的選擇 ......................................... 2 第二章 精制鹽水工段 ........................................... 3 精鹽水指標 ...................................................................................................................... 3 原鹽質(zhì)量 .......................................................................................................................... 3 淡鹽水脫氯及過堿量控制 .............................................................................................. 4 粗鹽水含量、溫度以及流量 .......................................................................................... 4 精制劑的配制 .................................................................................................................. 4 助沉劑配制 ...................................................................................................................... 5 精制反應(yīng)時間 .................................................................................................................. 5 炭素管過濾器性質(zhì)及工作要求 ...................................................................................... 5 樹脂塔的操作要點 .......................................................................................................... 5 樹脂塔最大流量 ........................................................................................................... 5 鹽水溫度 ....................................................................................................................... 5 鹽水 pH 值 .................................................................................................................... 6 樹脂塔壓差控制 ........................................................................................................... 6 第三章 電解工段的物料衡算 ..................................... 7 離 子膜交換原理 ............................................................................................................... 7 電解槽內(nèi)物料衡算 ........................................................................................................... 7 計算依據(jù) ........................................................................................................................ 7 計劃任務(wù) ........................................................................................................................ 7 電解槽選型 .................................................................................................................... 7 物料衡算 ........................................................................................................................ 8 第四章 電解液蒸發(fā) ............................................ 11 蒸發(fā)概論 ......................................................................................................................... 11 堿液蒸發(fā)的基本概念 .................................................................................................. 11 離子膜堿液蒸發(fā)的特點 .............................................................................................. 11 蒸發(fā)流程及設(shè)備類型選擇 ............................................................................................. 11 蒸發(fā)流程 ...................................................................................................................... 11 蒸發(fā)設(shè)備 ...................................................................................................................... 13 蒸發(fā)工藝計算 ................................................................................................................. 14 蒸發(fā)水量的計算 .......................................................................................................... 14 各效傳熱溫度差的計算 .............................................................................................. 15 各效物料、熱量衡算 .................................................................................................. 17 各效所需傳熱面積的計算 .......................................................................................... 19 試差計算 ...................................................................................................................... 19 第五章 固堿工藝 .............................................. 25 固堿流程選擇 ................................................................................................................. 25 固堿熱量、物料衡算 ..................................................................................................... 25 降膜蒸發(fā)器 .................................................................................................................. 25 降膜濃縮器 .................................................................................................................. 26 離子膜固堿種類 ............................................................................................................. 27 第六章 主要設(shè)備選型和設(shè)計 .................................... 29 電解槽選型及依據(jù)