申请人:CHEVRON U.S.A. INC.
公开号:EP1063014A2
公开(公告)日:2000-12-27
A dewaxing process for reducing the cloud point of a hydrocarbon oil feed wherein the hydrocarbon oil feed is contacted with a SSZ-32 zeolitic catalyst under dewaxing conditions to produce a dewaxed product. The zeolitic catalyst has a SSZ-32 zeolite having a mole ratio of silicon oxide to aluminum oxide of from 20:1 to 35:1 and from 0.1 % to 0.2% of a palladium/platinum mixture having a palladium to platinum molar ratio of from 1:4 to 4:1. After the palladium/platinum mixture is incorporated into the zeolitic catalyst, it is thermally treated at a temperature at least 370° C. The dewaxing conditions include a temperature of from 340° C to 400° C, a pressure of from 200 psig to 3000 psig, a liquid hourly space velocity of from 0.4 hr-1 to 2 hr-1, and a hydrogen recycle rate from 500 SCFB to 10,000 SCFB.
一种用于降低烃类油进料浊点的脱蜡工艺,其中烃类油进料在脱蜡条件下与 SSZ-32 沸石催化剂接触,生成脱蜡产品。沸石催化剂具有 SSZ-32 沸石,其氧化硅与氧化铝的摩尔比为 20:1 至 35:1,以及 0.1%至 0.2%的钯/铂混合物,其钯与铂的摩尔比为 1:4 至 4:1。脱蜡条件包括:温度从 340 摄氏度到 400 摄氏度,压力从 200 psig 到 3000 psig,液体时空速度从 0.4 hr-1 到 2 hr-1,氢气循环速率从 500 SCFB 到 10,000 SCFB。