Experimental Investigation of Attrition Resistance of Zeolite Catalysts in Two Particle Gas-Solid-Solid Fluidization System

Attrition Resistance of Zeolite Catalysts

Authors

  • Shahid Naveed Department of Chemical Engineering, University of Engineering & Technology, Lahore, Pakistan
  • Zeeshan Nawaz FLOTU, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Tang  Xiaoping FLOTU, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Qing Shu FLOTU, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Fei Wei FLOTU, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Keywords:

attrition; zeolite catalyst, two particle system, gas-solid-solid fluidized bed reactor

Abstract

In the study of mechanical degradation of 34 ZSM-5 and SAPO catalysts, using the gas jet attrition - ASTM standard fluidized bed test (D-5757), the effect of particle size and its quantitative analysis in co-fluidization environment was investigated on the air jet index (AJI) basis. In gas-solid-solid fluidized bed reactors (GSS-FBR), two different sized particles were fluidized under isothermal conditions. In case of ZSM-5 and SAPO-34, significant attrition resistance was observed, which was attributed to small pore size and specific structural strength of the mobile framework image (MFI) and chabasite (CHA) structures, respectively. The optimum AJI for SAPO-34 and ZSM-5 (of particle size 0.2 mm) in GSS-fluidization system was observed to be 0.0118 and 0.0062, respectively. In co-fluidization, deviations from Gwyn relationship were observed due to change in impact of collision. Therefore, zeolites are recommended as suitable catalysts or catalytic supports (for doping of expensive metals) and for commercial use in GSS-FBR.

 

Author Biographies

Shahid Naveed, Department of Chemical Engineering, University of Engineering & Technology, Lahore, Pakistan

Zeeshan Nawaz, FLOTU, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Tang  Xiaoping, FLOTU, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Qing Shu, FLOTU, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

Fei Wei, FLOTU, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China

 

 

 

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Published

2010-04-26

How to Cite

Naveed, S., Nawaz, Z., Xiaoping, T., Shu, Q., & Wei, F. (2010). Experimental Investigation of Attrition Resistance of Zeolite Catalysts in Two Particle Gas-Solid-Solid Fluidization System: Attrition Resistance of Zeolite Catalysts. Biological Sciences - PJSIR, 53(3), 169–174. Retrieved from https://v2.pjsir.org/index.php/biological-sciences/article/view/446

Issue

Vol. 53 No. 3 (2010): Pakistan Journal of Scientific and Industrial Research

Section

Articles