CAJ | 학술논문

本文研究了SiO2,TiO2, ZnO纳米颗粒添加FCC(流化催化裂化的催化剂)粗颗粒后的流化性能，提出了核壳结构模型。结果表明，添加FCC粗颗粒时三种纳米颗粒的流化性能得到明显改善，部分纳米颗粒与FCC粗颗粒形成核壳结构聚团，并以这种形式进行流化。流化过程中FCC粗颗粒与三种纳米颗粒形成的核壳结构聚团的空隙率在0.5以下，圆形度的平均值在0.5左右；而纯纳米颗粒聚团的孔隙率都在0.9以上，圆形度平均值在0.7左右。另外，核壳结构聚团的粘性远远小于纯纳米颗粒聚团的粘性。因此，核壳结构聚团的流化性能优于纯纳米颗粒聚团。
본문연구료SiO2,TiO2, ZnO납미과립첨가FCC(류화최화열화적최화제)조과립후적류화성능，제출료핵각결구모형。결과표명，첨가FCC조과립시삼충납미과립적류화성능득도명현개선，부분납미과립여FCC조과립형성핵각결구취단，병이저충형식진행류화。류화과정중FCC조과립여삼충납미과립형성적핵각결구취단적공극솔재0.5이하，원형도적평균치재0.5좌우；이순납미과립취단적공극솔도재0.9이상，원형도평균치재0.7좌우。령외，핵각결구취단적점성원원소우순납미과립취단적점성。인차，핵각결구취단적류화성능우우순납미과립취단。
The fluidization behavior of SiO2, TiO2, ZnO nanoparticles by adding FCC (fluid catalytic cracking) coarse particles was studied. The core-shell structure model was put forward. Some nanopar-ticles can be fluidized by forming core-shell structure agglomerates with FCC coarse particles. So the fluidization performance of three kinds of nanoparticles was improved after adding FCC coarse particles. The results showed that the porosity of core-shell structure agglomerates was below 0.5, and the average roundness value was around 0.5. All the porosity of pure nanoparticles agglomerates was above 0.9, and the average roundness value was around 0.7. In addition, the viscosity of the core-shell structure ag-glomerates was far less than the that of agglomerates only formed by nanoparticles. Therefore, the fluidi-zation behavior of core-shell structure agglomerates was better than that of agglomerates only formed by nanoparticles.