A new modified linear driving force model applied to activated carbon adsorption

doi:10.3969/j.issn.0438-1157.2014.10.028

CIESC Journal ›› 2014, Vol. 65 ›› Issue (10): 3953-3959.DOI: 10.3969/j.issn.0438-1157.2014.10.028

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A new modified linear driving force model applied to activated carbon adsorption

WANG Haihong¹, LIU Yingshu^1,2, LI Ziyi¹, YANG Xiong^1,2

1 School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2 Beijing Engineering Research Center for Energy Saving and Environmental Protection, University of Science and Technology Beijing, Beijing 100083, China

Received:2013-12-30 Revised:2014-07-02 Online:2014-10-05 Published:2014-10-05
Supported by:
supported by the Fundamental Research Funds for the Central Universities (FRF-SD-12-013A).

一种改进的LDF模型及其在活性炭吸附中的应用

王海鸿¹, 刘应书^1,2, 李子宜¹, 杨雄^1,2

1 北京科技大学机械工程学院, 北京 100083;
2 北京科技大学北京高校节能与环保工程研究中心, 北京 100083

通讯作者: 杨雄
基金资助:
中央高校基本科研业务费专项资金项目（FRF-SD-12-013A）。

Abstract

Abstract: The relationship between adsorption rate and adsorbate quantity of a single particle, and the adsorbate concentration distribution changing with time inside the particle were studied based on the solid surface diffusion model. Referring to the assumption of LDF in literature, it was found that assuming a parabola distribution of adsorbate concentration inside the particle at the initial time was not suitable, because it caused a lower gradient of particle concentration distribution on the particle surface, and also a lower adsorption rate. A new improved LDF model was put forward, and was verified through the experimental curves of SO₂ adsorption on activated carbon. The modified LDF model was more accurate in predictng the breakthrough curves compared with the LDF model.

Key words: activated carbon, adsorption, intraparticle diffusion, LDF model, desulfurization

摘要： 以固相表面扩散模型为基础，研究了活性炭在不同吸附质浓度下单颗粒的吸附速率与吸附量之间的关系，以及颗粒内浓度分布随时间的变化过程。结合文献对LDF模型的假设，认为吸附初期对吸附剂颗粒内浓度分布做抛物线假设误差较大，吸附初期颗粒表面浓度分布梯度偏低，使得吸附速率降低，并提出了改进后的LDF模型，最后结合固相表面扩散模型和活性炭颗粒吸附SO₂固定床穿透实验曲线进行了验证。结果表明，采用改进后的LDF模型作为推动力方程的穿透曲线模型能够更加准确地描述实验过程。本文的研究结果能够为活性炭吸附过程提供理论依据和模型参考。

关键词: 活性炭, 吸附, 粒内扩散, LDF模型, 脱硫

CLC Number:

TQ028.1

WANG Haihong, LIU Yingshu, LI Ziyi, YANG Xiong. A new modified linear driving force model applied to activated carbon adsorption[J]. CIESC Journal, 2014, 65(10): 3953-3959.

王海鸿, 刘应书, 李子宜, 杨雄. 一种改进的LDF模型及其在活性炭吸附中的应用[J]. 化工学报, 2014, 65(10): 3953-3959.

References 26

[1]	Nakao S, Stizuki M J. Mass transfer coefficient in cyclic adsorption and desorption [J]. J. Chem. Eng. Jpn., 1983, 16(2): 114-119
[2]	Li Zhong(李忠), Zhao Yuechun(赵月春), et al. New concentration profile within a particle corresponding to LDF model [J]. CIESC Journal(化工学报), 2000, 51(6): 792-796
[3]	Kenneth G, Teague Jr, Thomas F E. Predictive dynamic model of a small pressure swing adsorption air separation unit [J]. Ind. Eng. Chem. Res., 1999, 38: 3761-3775
[4]	Farooa S, Ruthven D M, Boniface H A. Numerical simulation of a pressure swing adsorption oxygen unit [J]. Chem. Eng. Sci., 1989, 44: 2809
[5]	Nakao S, Suzuki M. Rate of adsorption and desorption in cyclic adsorption process [J]. Chem. Eng. Sci., Japan, 1983: 186-191
[6]	Glueckauf E. Theory of chromatography [J]. Trans. Faraday Soc., 1955, 51: 1540-1551
[7]	Liaw C H, Wang J S P, Greenkorn R A, et al. Kinetics of fixed-bed adsorption: a new solution [J]. AIChE Journal, 1979, 25(2): 376-381
[8]	Yang R T, Dong S J. Gas separation by pressure swing adsorption: a pore-diffusion model for bulk separation [J]. AIChE Journal., 1985, 31(11): 1829-1842
[9]	Tsai M C, Wang S S, Yang R T. Pore-diffusion model for cyclic separation: temperature swing separation of hydrogen and methane at elevated pressures [J]. AIChE Journal, 1983, 29(6): 966-975
[10]	Tsai M C, Wang S S, Yang R T, et al. Temperature-swing separation of hydrogen-methane mixture [J]. Industrial & Engineering Chemistry Process Design and Development, 1985, 24(1): 57-62
[11]	Do D D, Rice R G. Validity of the parabolic profile assumption in adsorption studies [J]. AIChE Journal, 1986, 32(1): 149-154
[12]	Pedro Sá Gomes, Celina P Leão1, Alírio E Rodrigues. Simulation of true moving bed adsorptive reactor: detailed particle model and linear driving force approximations [J]. Chem. Eng. Sci., 2007,62(4): 1026-1041
[13]	Azevedo D, Rodrigues A E. Design of a simulated moving bed in the presence of mass-transfer resistances [J]. AIChE Journal, 1999, 45(5):956-966
[14]	Aik Chong Lua, Ting Yang. Theoretical and experimental SO2 adsorption onto pistachio-nut-shell activated carbon for a fixed-bed column [J]. Chemical Engineering Journal, 2009, 155(1/2): 175-183
[15]	Arun Gupta, Vivekanand Gaur, Nishith Verma. Breakthrough analysis for adsorption of sulfur-dioxide over zeolites [J]. Chemical Engineering and Processing, 2004, 43: 9-12
[16]	Murillo R, Garc?a T, Aylón E, Callén M S, et al. Adorption of phenanthrene on activated carbons: breakthrough curve modeling [J]. Carbon, 2004, 42: 2009-2017
[17]	Yi Honghong, Deng Hua, Tang Xiaolong, et al. Adsorption equilibrium and kinetics for SO2, NO, CO2 on zeolites FAU and LTA [J]. Journal of Hazardous Materials, 2012, 203: 111-117
[18]	Hsiao-Kuo Hsuen. An improved linear driving force approximation for intraparticle adsorption [J]. Chem. Eng. Sci., 2000, 55(17): 3475-3480
[19]	Ibrahim I EI-Sharkawy, Bidyut B Saha, Shigeru Koyama, et al. A study on the kinetics of ethanol-activated carbon fiber: theory and experiments [J]. International Journal of Heat and Mass Transfer, 2006, 49: 3014-3110
[20]	Chahbani M H, Tondeur D. Mass transfer kinetics in pressure swing adsorption [J]. Separation and Purification Technology, 2000, 20: 185-196
[2[1]	] Li Zhong, Yang R T. Concentration profile for linear driving force model for diffusion in a particle [J]. AIChE Journal, 1999, 45(1): 196-200
[22]	Li Z, Yang R T. Concentration profile for linear driving force model for diffusion in a particle [J]. AIChE Journal, 1999, 45(1): 196-200
[23]	Do D D, Nguyen T S. A power law adsorption model and its significance [J]. Chemical Engineering Communications, 1988, 72(1): 171-185
[24]	Carslaw H S, Jaeger J C. Conduction of Heat in Solids[M]. 2nd ed. Oxford, UK: Oxford University Press, 1959
[25]	Crank J. The Mathematics of Diffusion[M]. Oxford, UK: Clarendon Press, 1975
[26]	Zhang Shi(张湜), Chen Wenliang(陈文亮), Li Hui(李晖). Numerical simulation of vacuum pressure swing adsorption for biogas upgrading [J]. CIESC Journal(化工学报), 2013, 64(4): 1300-1305

A new modified linear driving force model applied to activated carbon adsorption

一种改进的LDF模型及其在活性炭吸附中的应用

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