A trickle-bed reactor (TBR) is a chemical reactor that uses the downward movement of a liquid and the downward (co-current) or upward (counter-current) movement of gas over a packed bed of (catalyst) particles. It is considered to be the simplest reactor type for performing catalytic reactions where a gas and liquid (normally both reagents) are present in the reactor and accordingly it is extensively used in processing plants. Typical examples are liquid-phase hydrogenation, hydrodesulfurization, and hydrodenitrogenation in refineries (three phase hydrotreater) and oxidation of harmful chemical compounds in wastewater streams or of cumene in the cumene process.[1][2][3] Also in the treatment of waste water trickle bed reactors are used where the required biomass resides on the packed bed surface.
Scheme of a trickle-bed reactor
Kineticsedit
Although the physical reactor is relatively simple, the hydrodynamics in the reactor are extremely complex. It is for this reason that TBRs have been extensively studied over the past five decades and currently[when?] the amount of open literature publications on TBRs is increasing, hinting that the understanding of the hydrodynamics is still limited.
A good introduction to the hydrodynamics of TBR can be found in the classic article by Satterfield.[2] Rate of reaction and mass transfer equations are derived by Fogler.[4]
^Chaudhari, R. V.; Ramachandran, P. A. (March 1980). "Three phase slurry reactors". AIChE Journal. 26 (2): 177–201. doi:10.1002/aic.690260202.
^ abSatterfield, Charles N. (March 1975). "Trickle-bed reactors". AIChE Journal. 21 (2): 209–228. doi:10.1002/aic.690210202.
^Fogler, H. Scott (2006). Elements of chemical reaction engineering (4th ed.). Upper Saddle River, NJ: Pearson Education International/Prentice Hall PTR. p. 850. ISBN0130473944.
^Fogler, H. Scott (2006). Elements of chemical reaction engineering (web supplement) (4th ed.). Upper Saddle River, NJ: Pearson Education International/Prentice Hall PTR. ISBN0130473944.
May 02, 2024
trickle, reactor, trickle, reactor, chemical, reactor, that, uses, downward, movement, liquid, downward, current, upward, counter, current, movement, over, packed, catalyst, particles, considered, simplest, reactor, type, performing, catalytic, reactions, wher. A trickle bed reactor TBR is a chemical reactor that uses the downward movement of a liquid and the downward co current or upward counter current movement of gas over a packed bed of catalyst particles It is considered to be the simplest reactor type for performing catalytic reactions where a gas and liquid normally both reagents are present in the reactor and accordingly it is extensively used in processing plants Typical examples are liquid phase hydrogenation hydrodesulfurization and hydrodenitrogenation in refineries three phase hydrotreater and oxidation of harmful chemical compounds in wastewater streams or of cumene in the cumene process 1 2 3 Also in the treatment of waste water trickle bed reactors are used where the required biomass resides on the packed bed surface Scheme of a trickle bed reactorKinetics editAlthough the physical reactor is relatively simple the hydrodynamics in the reactor are extremely complex It is for this reason that TBRs have been extensively studied over the past five decades and currently when the amount of open literature publications on TBRs is increasing hinting that the understanding of the hydrodynamics is still limited A good introduction to the hydrodynamics of TBR can be found in the classic article by Satterfield 2 Rate of reaction and mass transfer equations are derived by Fogler 4 See also editTrickling filterReferences edit Chaudhari R V Ramachandran P A March 1980 Three phase slurry reactors AIChE Journal 26 2 177 201 doi 10 1002 aic 690260202 a b Satterfield Charles N March 1975 Trickle bed reactors AIChE Journal 21 2 209 228 doi 10 1002 aic 690210202 Fogler H Scott 2006 Elements of chemical reaction engineering 4th ed Upper Saddle River NJ Pearson Education International Prentice Hall PTR p 850 ISBN 0130473944 Fogler H Scott 2006 Elements of chemical reaction engineering web supplement 4th ed Upper Saddle River NJ Pearson Education International Prentice Hall PTR ISBN 0130473944 Retrieved from https en wikipedia org w index php title Trickle bed reactor amp oldid 1072778614, wikipedia, wiki, book, books, library,
