实验室耐硫变换催化剂高压活性评价方法

为研究耐硫变换催化剂在高压和高汽气比工况条件下的活性、稳定性评价方法,模拟工况建立了实验室活性评价装置。通过正交试验,确定活性评价条件,并对评价装置的稳定性和评价方法的适用性进行考察。结果表明,在催化剂装填量30 mL（原粒度）、CO体积分数48%、硫化空速750 h^-1、硫化压力为常压、硫化时H₂S浓度17 g·m^-3、活性测定空速3 000 h^-1、汽气比1.5、活性测定温度350 ℃和活性测定压力8.0 MPa条件下,装置的平行性＜1.0%、复现性＜2.0%;在此条件下,测得的催化剂活性和稳定性与催化剂工业应用结果存在较好的一致性。

Study on laboratory activity evaluation method of sulfur-tolerant shift catalyst under high pressure

In order to research the activity of sulfur-tolerant shift catalyst and its evaluation method for stability under high pressure and high steam gas ratio, the activity evaluation device under laboratory condi- tion was established by simulating the operating conditions. Based on the orthogonal tests, the evaluation conditions of the activity were determined for investigating the stability of the activity evaluation device and the applicability of the method. The results showed that under the condition of catalyst dosage 30 mL （original size） , CO volume fraction 48% , space velocity 750 h^-1, atmospheric pressure, hydrogen sulfide concentration 17 g · m^-3 during vulcanization process, and under activity evaluation condition of space velocity 3 000 h ^- 1, steam gas ratio 1.5, temperature 350 ℃ and pressure 8.0 MPa, the parallelism and the reproducibility of the device were less than 1.0% and 2.0%, respectively ; under the condition, the results of catalyst activity and stability evaluation were consistent with that of the industrial application.