ZQC-25催化剂在加氢脱酸装置上的工业应用

Industrial application of ZQC-25 catalyst in hydrogenation-deacidification unit

介绍了ZQC-25催化剂首次在某炼厂30万t/a润滑油加氢脱酸装置上的工业应用情况,分析了装置标定以及生产加氢脱酸油的运行结果。标定表明,以绥中常二线、减一线为原料,在平均反应温度分别为288℃和308℃、体积空速0.95 h^(-1)、反应压力3.0 MPa、氢油体积比600:1的工艺条件下,能够生产酸值小于0.05 mg/g的加氢油,并保留了较高的C_(A)值,为后续糠醛精制装置提供原料,在生产期间加氢脱酸油完全满足炼厂加氢脱酸装置要求。该催化剂采用了器外预硫化工艺,开工时间仅是原催化剂的1/2,2年来减少不合格产品约1250 t。

The industrial application of ZQC-25 catalyst for the first time in 300000 t/a lubricating oil hydrogenation-deacidification unit of a refinery is introduced.The unit calibration and operation results are analyzed.It is indicated from the calibration that the hydrogenated oil with an acid value less than 0.05 mg·g^(-1) and a high CA value can be produced when Suizhong atmospheric pressure second line and vacuum first line fractions are used as feedstock,the average reaction temperature is 288℃and 308℃,respectively,volume space velocity is 0.95 h^(-1),reaction pressure is 3.0 MPa and volume ratio of hydrogen to oil is 600:1.The products can be used as raw material for furfural refining unit.The hydrogenated and acid-removed oil can meet the requirements of hydrogenation-deacidification unit in the refinery.External pre-vulcanization process is employed for the catalyst.The time spent in start-up is only half that needed by the original catalyst.About 1,250 tons of unqualified products have been reduced by using ZQC-25 catalyst in two years.