【摘要】：燃油深度脫硫是提高燃油質(zhì)量減少城市大氣污染的重要途徑,具有很重要的意義。用水蒸汽二次催化活化制備了石油焦基活性炭,考察了所制備活性炭及其載Ni-Zn復(fù)合吸附劑常溫靜態(tài)和高溫臨氫脫除燃油噻吩類硫的性能,結(jié)果如下：1、所制備的活性炭及其復(fù)合吸附劑具有典型的微孔結(jié)構(gòu)；2、在活化溫度、活化時間和水蒸汽用量三個因素中,活化溫度是影響其吸附脫硫性能的主要因素；3、活性炭及其復(fù)合材料的吸附硫容量隨著溶液中溶質(zhì)的濃度增加而增大,服從Langmuir等溫吸附模型；4、活性炭載Ni-Zn復(fù)合材料高溫臨氫化學(xué)吸附脫硫性能突出,當(dāng)Ni/Zn比為0.5,載量分別為1.56和3.91 mmol/g活性炭,初始硫含量為：640ppm,360℃,空速1h-1,氫/油比為0.1mol/mol,出口硫濃度小于10ppm時,其硫吸附容量分別達到48.1和106.5 mgS/g-adsorbent,相應(yīng)的金屬利用率分別達到96.1%和85.4%,明顯優(yōu)于目前工業(yè)應(yīng)用的S-Zorb吸附劑。
[Abstract]:Deep desulfurization of fuel is an important way to improve fuel quality and reduce urban air pollution, which is of great significance. Petroleum coke based activated carbon was prepared by secondary catalytic activation of steam. The static and high temperature hydrogen removal of thiophene sulfur from fuel was investigated by using activated carbon and its Ni-Zn composite adsorbents at room temperature. The results are as follows: 1. The activated carbon and its composite adsorbents have typical microporous structures. 2. Among the three factors: activation temperature, activation time and steam dosage, activation temperature is the main factor affecting its adsorption desulfurization performance. 3. The adsorption sulfur capacity of activated carbon and its composites increases with the increase of solute concentration in the solution, which obeys the Langmuir isotherm adsorption model. 4. When the ratio of Ni/Zn to Ni/Zn is 0.5, the loading of activated carbon Ni-Zn composites is 1.56 mmol/g and 3.91 mmol/g activated carbon, the initial sulfur content is 640ppm, 360 鈩，

本文編號：2490122