【摘要】 针对干化污泥热解致密结构破解及催化剂注入难、活性低的问题,采用温和条件下机械化学预处理方法实现CaO催化剂的活化和掺入。为优化机械化学预处理条件,使污泥在热解过程中产生更多高品质热解气,该试验研究不同磨球直径、球磨时间、剂料比（催化剂与污泥质量比）对污泥快速热解气组分分布和产气率的影响。结果表明:剂料比为1∶1的情况下,单独采用小球（直径6mm）球磨3 h的污泥产气率最高,达30.35%,其中CH₄、H₂、CO所占比例之和高达88.42%,产气热值为152.3 kJ/m³。更多还原

【Abstract】 Ca O as a kind of catalyst is used in rapid pyrolysis of dried sewage sludge for the purpose of increasing gas production and quality, but the pyrolysis is prone to form the dense structure of dried sewage sludge, which will result in the difficulties of injection of CaO into the sludge. In order to tackle the problem, a mild mechano-chemical pretreatment process was adopted in an experiment by using a planetary ball mill, which was focusing on the influence of the parameters such as size of grinding ball, milling time and the material ratio（mass of catalyst to sludge） on the gas composition distribution and yield during the rapid pyrolysis process of the dried sewage sludge. The optimized pretreatment condition as the experiment revealed that: when the material ratio was adjusted to 1∶1, and small balls（all in 6 mm in diameter） were used in milling the dried sludge for 3 h, gas yield could reach the highest gas production rate of 30.35% with the components of CH₄, H₂ and CO in the generated gas accounting for 88.42% and the gas calorific value being 152.3 kJ/m³.更多还原