关键词: LC-02碳基吸附剂, 穿透硫容, 吸附温度, 反应空速, O2, SO2, 再生温度, 再生时间

Abstract:

This article introduces the development process of high-performance LC-02 carbon-based adsorbent by SINOPEC Qilu Petrochemical Company, and evaluates the performance of the adsorbent. LC-02 high-performance carbon-based adsorbent was prepared by extrusion molding using activated carbon as the carrier material. The adsorbent preparation process was reasonable and had good repeatability; Detailed physicochemical performance characterization was conducted on LC-02 adsorbent, which has a specific surface area greater than 1,000 m²/g and a pore volume greater than 0.7 mL/g, with numerous alkaline centers and abundant surface functional groups; The effects of different reaction temperatures, reaction space velocities, and SO2 concentrations on the performance of the adsorbent were investigated. Under the conditions of a temperature of 150℃, a volume space velocity of 2,500 h-1, a volume fraction of O2 of 3%, and a volume fraction of SO2 of 35-1,000 μL/L, the sulfur penetration capacity of the adsorbent can reach over 22.0%, which can meet the requirements of industrial equipment use; The regeneration performance of the adsorbent was investigated, and the suitable regeneration temperature was 350-380℃. The sulfur capacity retention rate of the adsorbent after being regenerated 10 times reached 90.2%. The adsorbent is easy to regenerate and has good regeneration stability.

Key words: LC-02 carbon-based adsorbent, sulfur penetration capacity, adsorption temperature, reaction space velocity, O2, SO2, regeneration temperature, regeneration time