Benzene adsorption and hot purge regeneration in activated carbon beds

Yun, Jin-Mun; Choi, Dae-Ki; Moon, Hee

doi:10.1016/s0009-2509(00)00189-5

Cited by 74 publications

(41 citation statements)

References 10 publications

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“…Hence, for relatively small D/d p ratio the tube wall has a considerable influence on porosity, fluid flow, heat transfer and mass transfer in the bed. Moreover, it should be pointed out that identified limitations of existing literature on modelling adsorption in highly loaded, wall-cooled packed beds refer primarily to simplifying assumptions like isothermal operation [11], specific types of adsorption equilibrium [12][13][14], constant pattern behaviour [13,15], neglecting the resistance of mass transfer [16,17], or the use of lumped, overall coefficients for fluid-to-particle mass transfer [3,18].…”

Section: Introductionmentioning

confidence: 99%

Combined wall and thermal effects during non-isothermal packed bed adsorption

Kwapiński

2009

Chemical Engineering Journal

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Section: Introductionmentioning

confidence: 99%

Combined wall and thermal effects during non-isothermal packed bed adsorption

Kwapiński

2009

Chemical Engineering Journal

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“…Bochum University in Germany and other RÊhm activated carbon C40/4 pressure swing adsorption recovery CH2Cl2 and toluene recoveries were 80% and 95%, using Wessalith/DAY xylene recovery, and the recovery of more than 95% [3]. ReikoWakasugi, who used enriched reflux recovery of ethanol gas pressure swing adsorption system [4], Liu and other activated carbon pressure swing adsorption recovery of benzene from benzene/nitrogen gas mixture, the recovery rate of 99% [5]. Olajossy et al vacuum pressure swing adsorption (VPSA) The coal mine gas methane volume concentration increased from 5512% to 86% to 91%.…”

Section: Activated Carbon Adsorption Process Of Vocsmentioning

confidence: 99%

Study on Activated Carbon Adsorption of VOCs

Zhang¹

2016

Proceedings of The6th International Conference on Mechatronics, Materials, Biotechnology and Environment (ICMMBE 2016)

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Toluene, methyl ethyl phthalate amines, methyl ethyl ketone and ethyl acetate are used in China more vinegar several solvents, in the course will emit large amounts of volatile organic gases, serious harm to human health and the environment, it must be recycled or disposed of these gases. In this paper, for several different boiling organic gases: toluene, methyl ethyl phthalate amines, methyl ethyl ketone and ethyl vinegar to study adsorption, desorption and condensation recovery process as well as the law, in order to obtain activated carbon adsorption of pollutants on different boiling points and basic data desorption process, provide a reliable basis for the industrial design of adsorption and desorption processes. Highlights of this paper is to determine the temperature of the adsorption isotherm, domestic normal temperature adsorption studied more, and relatively few of the high temperature adsorption studies, but the adsorption capacity of the activated carbon at high temperature desorption or regeneration of important guiding significance.

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“…Various papers have reported parametric analysis or studies of regeneration in thermal swing adsorption (TSA), including optimization of the purge gas quantity and the energy required for regeneration (Basmadjian et al, 1975;Kumar and Dissinger, 1986;Huang and Fair, 1988;Schork and Fair, 1988;Huang et al, 1993;Hwang et al, 1997;Yun et al, 2000), cyclic simulation of the TSA system (Ko et al, 2002a(Ko et al, , 2002bRuthven, 1984), and empirical experimental analysis of the honeycomb rotor concentrator (Lin and Chang, 2009;Mitsuma et al, 1998). However, there have been few numerical studies of the concentration behavior of low-concentration VOCs gases in air by lowering the purge flow rate in fixed beds packed with granular or cylindrical adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Development of New Hybrid VOCs Treatment Process Using Activated Carbon and Electrically Heated Alumite Catalyst

Yamaguchi

Aoki

Sakurai

et al. 2013

J. Chem. Eng. Japan

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The purpose of this research is the development of a hybrid volatile organic compounds (VOCs) treatment process, which consists of adsorptive separation and catalytic oxidation. This process greatly reduces energy consumption compared with conventional thermal or catalytic combustion processes. Low concentrations of VOCs in polluted air are initially separated and concentrated into a small stream in the adsorptive step, and the concentrated VOCs are oxidized on an electrically heated alumite catalyst. Numerical system evaluation was carried out to estimate the e ect of the concentration of VOCs in the air on the material and energy balances. Experimental and theoretical studies were performed on the adsorption of toluene in nitrogen gas, and desorption and concentration by hot nitrogen purging, in xed-beds charged with activated carbon. A linear driving force mass-transfer model with an averaged overall mass-transfer coe cient was found to provide an acceptable t to the measured desorption data. The experimental and modeling results were used to assess the in uence of the purge gas ow rate and regeneration temperature on the bed length and cyclic steadystate convergence times using cyclic dynamic simulation of thermal swing adsorption. The evaluation results showed that a large amount of energy could be saved, and the unit cost lowered, by combining the adsorption step with electrically heated catalytic oxidation in the treatment of gases with low VOCs concentrations.

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Benzene adsorption and hot purge regeneration in activated carbon beds

Cited by 74 publications

References 10 publications

Combined wall and thermal effects during non-isothermal packed bed adsorption

Combined wall and thermal effects during non-isothermal packed bed adsorption

Study on Activated Carbon Adsorption of VOCs

Development of New Hybrid VOCs Treatment Process Using Activated Carbon and Electrically Heated Alumite Catalyst

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