原料油中的钙分布在催化裂化过程中的变化

CHANGE OF CALCIUM DISTRIBUTION FROM FEEDSTOCK DURING FCC PROCESS

采用Ｘ射线衍射、等离子体原子发射光谱手段对钙模型化合物在原油、渣油中的灰化产物及高钙催化裂化（ＦＣＣ）催化剂中钙化合物的类型进行了研究，并对钙在ＦＣＣ过程中分布的变化进行了讨论。结果表明，原料油中的钙化合物在烧炭过程中形成硫酸钙；ＦＣＣ平衡剂及待生剂上均存在大量的硫酸钙。

With model compounds,the compositions of calcium compounds have been studied by XRD,ICP AES and compared with FCC catalysts containing highly calcium.Calcium sulfate was found in ashes and FCC catalysts,both spent and regenerated.The distributions of calcium among various calcium compounds in FCC stream were discussed.