The Characteristics of Calcium-Based Sorbent Burning Pore Structure and Simulation of Gas-Solid Mass Transfer in Vulcanization

Article Preview

Abstract:

The experimental is carried out in the normal air atmosphere by calcining CaCO3 and using the scan electricity speculum and N2 adsorption apparatus to research the ventage structure of the calcinate CaO at 860°C.Analyzing on fractal dimension of different calcination temperature, heating rate and residence time. Thorough the pore structure of CaO which is a porous substance, using “dynamic pervasion modulus” to analyse the Calcium-based sorbent’s gas-solid pervasion transferring quality reaction when it is calcined in the furnace. Using the “dynamic pervasion modulus” and revising the expression of the SO2 adsorption quality in vulcanizing reaction.

You might also be interested in these eBooks

Info:

Periodical:

Advanced Materials Research (Volumes 383-390)

Pages:

7669-7676

Citation:

Online since:

November 2011

Authors:

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2012 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] Pascal I P. Nonlinear diffusion in fractal structures. Phys A, 1994, 208: 351~358.

Google Scholar

[2] Miao Mingfeng, Chen Xianglin. Non-linear Change Characteristics of Pore Structure of Calcium-based Sulfur-fixing sorbent in Valcination Process. Energy Research and Application, 2001 (1).

Google Scholar

[3] Wang Hong, Dong Xuewen. Mechanism of SO2 Removal in O2/CO2 Combustion. Journal of Chemical Industry and Engineering(China) 2005 (10).

Google Scholar

[4] Borgwardt R H. Calcium oxide sintering in atmospheres containing water and carbon dioxidelnd. Eng Chem Res, 1989, 28: 493~500.

DOI: 10.1021/ie00088a019

Google Scholar

[5] Borgwardt R H. Calcination kinetics and surface area of dispersed limestone particles. AlChEJ, 1985, 31: 103~111.

DOI: 10.1002/aic.690310112

Google Scholar

[6] Qiu Junhong. Transfer Theory and Its Application. Chemical Industry Press, (2006).

Google Scholar

[7] Shi Mingheng, Chen Yongping, etc. Study on Fractal Description of Thermophysical Property of Nonlinear Porous Media and Material Transference Law. New Development of Theoretical and Experimental Study on Convective Heat Transfer and Reinforcement. High Education Press, (2005).

Google Scholar

[8] Xu Longjun, Gu Leguan, Xian Xuefu. FRACTAL ADSORPTION MODEL. Coal conversion, 2000,1(23): 91~93.

Google Scholar

[9] Miao Mingfeng. Study on Nonlinear Pore Structure and valcanization activity of calcium-based sulfur-fixing sorbent. [Doctoral Dissertation]. Nanjing: Southeast University.

Google Scholar

[10] Yang Shiming, Xiao Baocheng, Yang Qiangsheng. EQUIVALENT COUPLING DIFFUSION MODEL ON HEAT-AND-MASS TRANSFER INSIDE FOROUS MEDIA. Journal of Shanghai Jiaotong University, 1992: 285~2.

Google Scholar