PST-100催化剂在丙烷脱氢装置上的工业应用

COMMERCIAL APPLICATION OF PST-100 CATALYST IN PROPANE DEHYDROGENATION UNIT

介绍PST-100催化剂在浙江绍兴三锦石化公司450 kt/a丙烷脱氢装置上的工业应用情况。应用结果表明,该催化剂具有优异的活性和选择性,积炭速率低,待生剂积炭量在1.5%左右;催化剂强度高,粉尘量少,运行3.5 a后催化剂强度仍保持在38 N/粒以上,粉尘中粒径小于0.8 mm的颗粒少于1.5 kg/d,极大降低了粉尘对装置稳定运行的不利影响,延长了装置运行周期;催化剂持氯能力强,氯损失少,再生注氯量约为催化剂循环量的0.12%,大大消弱了氯对设备的腐蚀,提高装置运行的稳定性。经过3.5 a的工业应用,催化剂活性保持稳定,生产1 t丙烯的纯丙烷消耗量为1.16 t,催化剂寿命预计超过4 a。

The application of PST-100 catalyst in 450 kt/a propane dehydrogenation unit is introduced.The industrial application results showed that the catalyst had excellent activity,high selectivity,high strength and low dust content with low carbon deposition rate and the carbon deposition amount of spent catalyst about 1.5%.The catalyst strength remained above 38 N after 3.5 a of operation,and the particles size smaller than 0.8 mm in the dust were less than 1.5 kg/d,which could greatly reduce the adverse impact of dust on the stable operation and prolong the operation cycles of the unit.The catalyst has strong chlorine holding capacity which can decrease the chlorine loss of catalyst.The chlorine injection amount in regeneration progress was about 0.1%of the catalyst circulation rate,which could greatly weaken the corrosion of chlorine to the equipment and improve the operation stability of the unit.After 3.5 a of industrial application,the catalyst activity remained stable,the consumption of propane for the production of 1 t propylene was 1.16 t,and the service life of the catalyst was expected to exceed 4 a.