硫酸工业
硫痠工業
류산공업
SULPHURIC ACID INDUSTRY
2001年
2期
11-15
,共5页
二氧化硫%转化%加压
二氧化硫%轉化%加壓
이양화류%전화%가압
介绍了以液体SO2为原料生产用作磺化剂的气态SO3的工艺过程。采用硅胶干燥法得到加压干燥空气。汽化的液体SO2经加压干燥空气稀释后进行三段一次转化生产气态SO3。由于SO2经加压干燥空气稀释后的氧硫比较高、压力较大，一段转化率过高，催化剂存在烧毁的危险。为此，根据SO2转化的化学平衡，分析了温度、压力和起始氧浓度对平衡转化率的影响，确定了进转化器气体φ（SO2）12%～16%，压力0.18～0.20MPa。装置投运后，能长期稳定运行，转化率为97%左右。
介紹瞭以液體SO2為原料生產用作磺化劑的氣態SO3的工藝過程。採用硅膠榦燥法得到加壓榦燥空氣。汽化的液體SO2經加壓榦燥空氣稀釋後進行三段一次轉化生產氣態SO3。由于SO2經加壓榦燥空氣稀釋後的氧硫比較高、壓力較大，一段轉化率過高，催化劑存在燒燬的危險。為此，根據SO2轉化的化學平衡，分析瞭溫度、壓力和起始氧濃度對平衡轉化率的影響，確定瞭進轉化器氣體φ（SO2）12%～16%，壓力0.18～0.20MPa。裝置投運後，能長期穩定運行，轉化率為97%左右。
개소료이액체SO2위원료생산용작광화제적기태SO3적공예과정。채용규효간조법득도가압간조공기。기화적액체SO2경가압간조공기희석후진행삼단일차전화생산기태SO3。유우SO2경가압간조공기희석후적양류비교고、압력교대，일단전화솔과고，최화제존재소훼적위험。위차，근거SO2전화적화학평형，분석료온도、압력화기시양농도대평형전화솔적영향，학정료진전화기기체φ（SO2）12%～16%，압력0.18～0.20MPa。장치투운후，능장기은정운행，전화솔위97%좌우。
The process of SO3 production as sulphonating agent from liquid SO2 is introduced. Air was compressed and dried by silica gel. SO2 was diluted with the air and oxidized to SO3 at elevated pressure in a 3-stage converter. Because of much higher ratio of SO2 to O2 and operation pressure, the conversion in the first bed was so high as to cause deactivation of catalyst. The influence of temperature, pressure and initial SO2 concentration on the balance conversion was analyzed to give a proper inlet SO2 concentration of 12～16vol% and pressure of 0.18～0.20MPa. The unit has been operated well and conversion of SO2 was about 97%.
