加氢脱硫废催化剂综合利用研究

Research on comprehensive utilization of hydrodesulphurization spent catalyst

提出了石油精炼过程中产生的加氢脱硫镍-钼-铝系废催化剂的湿法全回收新工艺路线和工艺条件。研究了分离废催化剂中的钒、钼、镍、铝等有价金属的原理及技术特点。实验结果:n(碳酸钠)/n(钼+钒)=1.5,加入适量的添加剂,粉碎至≤180μm,700℃焙烧2 h,用热水浸取,Mo和V的浸出率可达90%以上。

A new technology route and the conditions of whole recovery by wet method from waste catalyst of hydrodesulphurization in the oil refining process were proposed. The separating principle and technological characteristics of separating V,Mo,Ni and Al from waste catalyst were studied. The test results show that when n（ Na2CO3 ）/n（ Mo ＋ V） = 1.5 adding proper amount additive,pulverizing them to ≤180 μm and calcinating at 700 ℃ for 2 h, then leaching them by hot water,the leaching rate of Mo and V can be over 90%.