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1、1SZorb裝置吸附劑失活原因分析金陵分公司2主要內(nèi)容一、吸附劑失活情況二、原因分析及采取措施三、各項(xiàng)化驗(yàn)分析數(shù)據(jù)簡介金陵SZorb裝置自2012年8月一次性開車成功,運(yùn)行情況一直較好,2014年5月吸附劑中硅酸鋅含量突然上升,由12%上升至26%,造成吸附劑中有效活性組分降低,導(dǎo)致精制汽油產(chǎn)品不合格,連續(xù)置換20噸吸附劑后仍不見好轉(zhuǎn),于2014年6月6日整體置換吸附劑后,短時(shí)間內(nèi)硅酸鋅含量再次突升,于6月28日再次整體置換吸附劑,硅酸鋅含量仍緩慢上升,現(xiàn)將排查及調(diào)整過程總結(jié)如下:34一、吸附劑失活情況5吸附劑失活情況1、吸附劑硅酸鋅含量
2、上升ZnO/(wt%)ZnS/(wt%)Zn2SiO4/(wt%)ZnAl2O4/(wt%)ZnO+ZnS/(wt%)130719待生4.047.51.022.851.5130719再生12.329.71.324.342130906待生13.932.21.924.043.6130906再生23.616.92.024.840.5131114待生7.732.46.823.340.1131114再生17.319.37.325.536.6140131待生6.132.611.925.738.7140131再生13.619.412.125.63314
3、0228待生7.024.313.626.631.3140228再生18.714.013.323.732.7140411待生9.319.212.225.428.5140411再生20.212.210.928.132.4140425待生24.616.712.425.541.3140425再生8.924.912.423.933.8140509待生5.819.626.522.825.4140509再生18.16.722.824.824.8140512待生6.418.426.821.224.8140512再生17.83.426.925.821.26
4、吸附劑失活情況2、吸附劑在線置換ZnO/(wt%)ZnS/(wt%)Zn2SiO4/(wt%)ZnAl2O4/(wt%)ZnO+ZnS/(wt%)140522待生10.017.722.721.827.7140522再生22.51.324.224.023.8140528待生7.517.024.921.624.5140528再生22.51.324.823.123.8140601待生10.019.521.922.429.5140601再生21.34.221.225.525.5140604待生7.819.124.821.326.9140604再生
5、19.75.223.623.024.9140605待生9.417.025.221.226.4140605再生21.83.124.022.324.9在線置換吸附劑20t,平均每天1~2t,仍無明顯好轉(zhuǎn)。硅酸鋅含量雖曾有下降,但很快又持續(xù)上漲,吸附劑活性組分也呈下降趨勢。7吸附劑失活情況3、整體置換吸附劑后持續(xù)上漲日期ZnO/(wt%)ZnS/(wt%)Zn2SiO4/(wt%)ZnAl2O4/(wt%)ZnS+ZnO/(wt%)140606XJ49.320.80.02.270.1140611DS25.922.71.418.148.61406
6、11ZS35.28.81.117.744.0140619DS18.626.83.719.845.4140619ZS29.113.33.617.842.4140623DS12.928.68.519.941.5140623ZS25.810.99.420.636.7140624DS12.322.912.320.435.2140624ZS28.06.712.020.234.7140625DS11.122.113.317.833.2140625ZS28.46.013.218.834.4140626DS9.820.816.020.930.614062
7、6ZS24.37.215.621.631.5140627DS9.221.117.321.030.3140627ZS24.26.616.821.130.8140628DS7.519.620.016.827.1140628ZS23.55.119.421.828.6于6月6日吸附劑整體置換后,持續(xù)跟蹤吸附劑的活性組成變化情況,分析頻次1次/周,后發(fā)現(xiàn)硅酸鋅生成速率加快,改為1次/天。8吸附劑失活情況4、第二次整體置換吸附劑第二次整體置換吸附劑后,每日向系統(tǒng)補(bǔ)充0.5t新鮮吸附劑,硅酸鋅上漲速率平均1%/天。9吸附劑失活情況5、吸附劑硅酸鋅含量總
8、體趨勢圖中突降為整體置換吸附劑6月6日6月28日7月31日10二、原因分析及采取措施111、嚴(yán)格控制再生風(fēng)量,提高吸附劑載硫載碳待生吸附劑再生吸附劑2、流程檢查12序號可能存在問題檢查結(jié)果11