A heating-cooling management to improve controllability of batch reactor equipped with a mono-fluid heating-cooling system

This paper describes the development of a dynamic simulator model for a jacketed batch reactor equipped with a mono-fl uid heating/cooling system. The Mono-fl uid fl ows at constant fl ow-rate through the jacketed reactor. The heating and cooling are assured respectively by electrical resistance and two plate heat exchangers. A detailed description of the equations leading to the development of simulation model is presented. The model is based on writing the equations of the mass balance and the heat balance for the reactor and the thermal loop in unsteady state. To validate the simulation model, we fi rst studied the thermal behavior of the reaction mixture during heating and cooling, using water as the reaction mixture. We then considered the consecutive chemical reaction of the synthesis of cyclopentanediol from cyclopentadiene by studying the yield of this reaction. The results show that heating the reaction mixture increases signifi cantly the yield of this synthesis reaction.

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“…Then Hr(T r ) is expressed as: (10) After development, the fi nal expression is obtained: (11) With :…”

Section: Mass and Heat Balance On The Reaction Mixturementioning

confidence: 99%

Development of a Simulation Model for Controlling and Improving the Productivity of Batch Reactors

Henini

Souahi

Laidani

2013

Polish Journal of Chemical Technology

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“…The performances of the PFC are mainly determined by its internal process model. Process modeling and details of the different algorithms can be found in Bouhenchir (2000). In this paper only the internal dynamic models are presented.…”

Section: Pfc Controllersmentioning

confidence: 99%

“…PFC controllers. Q min,gw ) in order to select the adequate apparatus (Bouhenchir, 2000;Bouhenchir et al, 2000). Once the apparatus is selected, the corresponding controller from level "0" is chosen.…”

Section: Summary Of the Control Strategymentioning

confidence: 99%

“…The temperature profile in batch reactors usually follows three-stages (Bouhenchir, Cabassud, Le Lann, & Casamatta, 2000;Preuß, Le Lann, & Anne-Archard, 2000;Xaumier, Le Lann, Cabassud, & Casamatta, 2002): (i) heating of the reaction mixture until the desired reaction temperature, (ii) maintenance of the system at this temperature and (iii) cooling stage in order to minimize the formation of by-products. Any controller used to control the reactor must be able to take into account these different stages.…”

Section: Introductionmentioning

confidence: 99%

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Predictive functional control for the temperature control of a chemical batch reactor

Bouhenchir

Cabassud

Lann

2006

Computers & Chemical Engineering

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“…Batch and fed-batch reactors require good temperature control due to the existence of heat-sensitive chemical reactants and/or products and also to the dependency of reaction rate on the temperature. To carry out chemical reactions in this type of reactors, frequently an operating mode consisting of the different phases is used: (i) a heating phase of the reaction mixture until the desired reaction temperature, (ii) A reaction phase during which the temperature is maintained constant, (iii) A cooling phase to avoid by-products formation [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Methodology of Supervision by Analysis of Thermal Flux for Thermal Conduction of a Batch Chemical Reactor Equipped with a Monofluid Heating/Cooling System

Henini

Souahi

Laidani

2012

Modelling and Simulation in Engineering

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We present the thermal behavior of a batch reactor to jacket equipped with a monofluid heating/cooling system. Heating and cooling are provided respectively by an electrical resistance and two plate heat exchangers. The control of the temperature of the reaction is based on the supervision system. This strategy of management of the thermal devices is based on the usage of the thermal flux as manipulated variable. The modulation of the monofluid temperature by acting on the heating power or on the opening degrees of an air-to-open valve that delivers the monofluid to heat exchanger. The study shows that the application of this method for the conduct of the pilot reactor gives good results in simulation and that taking into account the dynamics of the various apparatuses greatly improves ride quality of conduct. In addition thermal control of an exothermic reaction (mononitration) shows that the consideration of heat generated in the model representation improve the results by elimination any overshooting of the set-point temperature.

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A heating-cooling management to improve controllability of batch reactor equipped with a mono-fluid heating-cooling system

Cited by 4 publications

References 1 publication

Development of a Simulation Model for Controlling and Improving the Productivity of Batch Reactors

Development of a Simulation Model for Controlling and Improving the Productivity of Batch Reactors

Predictive functional control for the temperature control of a chemical batch reactor

Methodology of Supervision by Analysis of Thermal Flux for Thermal Conduction of a Batch Chemical Reactor Equipped with a Monofluid Heating/Cooling System

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