Abstract
A new approach to enhancing the efficiency of adsorption-catalytic removal of volatile organic compounds from exhaust gas is considered. This approach employs a structured fixed bed consisting of large pellets of a catalytic adsorbent and a microfibrous catalyst. Numerical modeling has demonstrated that, during the high-temperature oxidative regeneration of the catalytic adsorbent, the microfibrous catalyst is heated much more rapidly than the large pellets of the catalytic adsorbent owing to its substantially larger outer specific surface area. This makes it possible to efficiently oxidize the unoxidized volatile organic compounds that desorb from the surface of the catalytic adsorbent, thereby minimizing the desorption loss and markedly increasing the gas cleaning efficiency.
Similar content being viewed by others
References
Matros, Yu.Sh., Noskov, A.S., and Chumachenko, V.A., Kataliticheskoe obezvrezhivanie otkhodyashchikh promyshlennykh gazov (Catalytic Neutralization of Industrial Exhaust Gases), Novosibirsk: Nauka, 1991.
Zagoruiko, A.N., Unsteady Catalytic Processes and Sorption-Catalytic Technologies, Russ. Chem. Rev., 2007, vol. 76, no. 7, p. 639.
Robinson, E., UK Patent 1582441, 1971.
Stanley, P.B. and Ritscher, J.S., US Patent 4234549, 1979.
Schoubye, P., UK Patent 2051761, 1979.
Orlyk, V.M., Tereshenko, A.D., Martcenyuk-Kucharuk, M.G., et al., Adsorptional-Catalytic Gas Cleaning From Organic Impurities, Proc. 1st World Congr. on Environmental Catalysis, Roma, 1995, p. 671.
Rabinovich, O.S., Gurevich, I.G., Kisarov, V.M., et al., Sorbent Regeneration in Filtrating Combustion Wave, Materialy mezhdunarodnoi konferentsii po teplomassobmenu (Proc. Int. Conf. on Heat and Mass Transfer), Minsk: Inst. of Heat and Mass Transfer, 1988, p. 80.
Brovtseva, V.M., Igolkina, S.M., Kalinkina, L.I., et al., Adsorption-Catalytic Method of Neutralization of Gas Emissions in Mineral Wool Slab Production, Tezisy 5-i Vses. konf. “Kataliticheskaya ochistka gazov” (Proc. 5th USSR Conf. on Catalytic Gas Cleaning), Tbilisi, 1989, p. 75.
Suprunov, V.E., Phenol Adsorption Mechanism on Transition Metal Oxides, Tezisy 4-i Vses. konf. po mekhanizmu kataliticheskikh reaktsii (Proc. 4th USSR Conf. on Mechanisms of Catalytic Reactions), Moscow, 1986, part 2, p. 401.
Suprunov, V.E., Adsorption of Phenol and the Oxidation of Its Surface Compounds on Oxide Catalysts under Unsteady-State Conditions, Tezisy 3 konf. “Nestatsionarnye protsessy v katalize” (Proc. 3rd Conf. on UnsteadyState Processes in Catalysis), Novosibirsk, 1986, part 1, p. 170.
Kalinkina, L.I., Kisarov, V.M., Igolkina, S.M., et al., Catalytic-Adsorption Method for Eliminating Styrene from Exhaust Gases, Proc. Int. Conf. on Unsteady-State Processes in Catalysis, Novosibirsk, 1990, p. 525.
Vlasenko, V.M., Chernobrivets, V.L., Feshchenko, L.V., et al., USSR Inventor’s Certificate No. 1674933, 1989.
Zagoruiko, A.N., Kostenko, O.V., and Noskov, A.S., Development of the Adsorption-Catalytic Reverse-Process for Incineration of Volatile Organic Compounds in Diluted Waste Gases, Chem. Eng. Sci., 1996, vol. 51, no. 11, p. 2989.
Zagoruiko, A.N., Kostenko, O.V., Tsyrul’nikov, P.G., et al., Adsorption-Catalytic Process of Waste Gas Cleaning from Organic Compounds: Kinetics and Process Modeling, Khim. Prom-st., 1997, no. 4, p. 278.
Salden, A. and Eigenberger, G., Multifunctional Adsorber/Reactor Concept for Waste Air Purification, Chem. Eng. Sci., 2001, vol. 56, p. 1605.
Vernikovskaya, N.V., Zagoruiko, A.N., Chumakova, N.A., and Noskov, A.S., Mathematical Modeling of Unsteady-State Operation Taking into Account Adsorption and Chemisorption Processes on the Catalyst Pellet, Chem. Eng. Sci., 1999, vol. 54, p. 4639.
Retallick, W.B., US Patent 5487869, 1996.
Zagoruiko, A.N., Noskov, A.S., and Kostenko, O.V., RF Patent 2102119, 1995.
Zagoruiko, A.N. and Noskov, A.S., RF Patent 2147457, 1997.
Zagoruiko, A.N., RF Patent 2263539, 2004.
Balzhinimaev, B.S., Paukshtis, E.A., Vanag, S.V., et al., Glass-Fiber Catalysts: Novel Oxidation Catalysts, Catalytic Technologies for Environmental Protection, Catal. Today, 2010, vol. 151, p. 195.
Zagoruiko, A.N., Lopatin, S.A., Bal’zhinimaev, B.S., et al., Catalytic Exhaust Gas Burning over the IK-12-S102 Platinum/Glass Fiber Catalyst, Katal. Prom-sti., 2010, no. 2, p. 28.
Aerov, M.E., Todes, O.M., and Narinskii, D.A., Apparaty so statsionarnym zernistym sloem: Gidravlicheskie i teplovye osnovy raboty (Fixed-Bed Apparatuses: Hydraulic and Thermal Foundations of Operation), Leningrad: Khimiya, 1979.
Spravochnik khimika (Chemist’s Handbook), 5 vols., Moscow: Khimiya, 1962–1966.
Shurubor, I.I., Heat Dispersion in a Fixed Granular Bed, Teor. Osn. Khim. Tekhnol., 1988, vol. 22, p. 690.
Samarskii, A.A., Teoriya raznostnykh skhem (Difference Scheme Theory), Moscow: Nauka, 1977.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © S.V. Zazhigalov, N.A. Chumakova, A.N. Zagoruiko, 2013, published in Teoreticheskie Osnovy Khimicheskoi Tekhnologii, 2013, Vol. 47, No. 2, pp. 224–234.
Rights and permissions
About this article
Cite this article
Zazhigalov, S.V., Chumakova, N.A. & Zagoruiko, A.N. Modeling of a multidispersed adsorption-catalytic system for removal of organics from exhaust gas. Theor Found Chem Eng 47, 175–184 (2013). https://doi.org/10.1134/S0040579512040203
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0040579512040203