固定床渣油加氢技术及渣油高效转化技术应用

Application of fixed-bed residue hydrotreating technology and residue high efficiency conversion technology

固定床渣油加氢技术一般不加工100%减压渣油,其装置混合原料中减压渣油质量分数一般不高于65%。A固定床渣油加氢装置6个周期运行结果表明:原料中减压渣油比例越高,装置运行周期越短。B固定床渣油加氢装置体积空速为0.20 h^(-1),若体积空速降低至0.15、0.10 h^(-1),反应器压力降预计分别增加至2.3、3.4 MPa。A固定床渣油加氢装置加氢重油产率高达93.25%,520℃以上馏分转化率仅为25.38%。沸腾床渣油加氢技术及浆态床渣油加氢技术可以加工100%减压渣油。C沸腾床渣油加氢装置和D浆态床渣油加氢装置反应器压力降稳定,其中D装置反应器压力降仅为0.42 MPa。典型沸腾床渣油加氢技术和浆态床渣油加氢技术的转化率可达85.87%和91.49%。

Generally,100%vacuum residue is not processed in fixed-bed residue hydrogenation units,and the proportion of vacuum residue in feedstock is not higher than 65%.The A fixed bed residue hydrogenation unit has six cycles,and the operating results show that the higher the proportion of vacuum residue in feedstock,the shorter the operating cycle of the unit.The volume space velocity of the B fixed bed residue hydrogenation unit is 0.20 h^(-1).If the volume space velocity decreases to 0.15 h^(-1) and 0.10 h^(-1),the reactor pressure drop is expected to increase to 2.3 MPa and 3.4 MPa,respectively.The yield of hydrogenated heavy oil in the A fixed bed residue hydrogenation unit is as high as 93.25%,and the conversion rate of fractions above 520℃is only 25.38%.Ebullated bed residue hydrocracking technology and slurry bed residue hydrocracking technology can process vacuum residue.The pressure drop in the reactors of the ebullated bed unit C and the slurry bed unit D is stable,with a pressure drop of only 0.42 MPa in reactor of unit D.The conversion rates of typical ebullated bed residue hydrocracking technology and slurry bed residue hydrocracking technology can reach 85.87%and 91.49%,respectively.