CHE 342 Chemical Reaction Kinetics and Reactor Design Introduction Prof. Dr. Ahmet Erhan Aksoylu CHE 342_Intro_Aksoylu 1 CHE 342_Intro 2 A vessel designed to contain chemical reactions is called a reactor. Reactor is the heart of a Chemical Process. An industrial reactor is a complex chemical unit in which heat transfer mass transfer diffusion and friction may occur along with chemical reaction with the provisions of safety and controls CHE 342_Intro_Aksoylu 3 The reactors, in which chemicals are made in industry, vary in size from a few cm 3 to the vast structures that are often depicted in photographs of industrial plants. For example, kilns that produce lime from limestone in cement factories may be over 25 metres high and hold, at any one time, well over 400 tonnes of materials. The design of the reactor is determined by many factors but of particular importance are the thermodynamics and kinetics of the chemical reactions being carried out. CHE 342_Intro CHE 342_Intro_Aksoylu 4 In general, reactors can be classified according to the Mode of operation batch, continuous, semi-batch reactors End use application polymerization, bio-, electrochemical,... # of phases single-, two-, multi-phase Catalyst presence Catalytic, non-catalytic CHE 342_Intro CHE 342_Intro_Aksoylu 5 We will concentrate on the design (sizing) of the ideal, isothermal & non-isothermal Batch reactors Continuous Reactors Continuous Stirred Tank Reactors-CSTR Plug Flow Reactors-PFR Packed Bed Reactors-PBR CHE 342_Intro CHE 342_Intro_Aksoylu 6 Batch Reactor CHE 342_Intro CHE 342_Intro_Aksoylu 7 Batch Reactors_Colorant production CHE 342_Intro CHE 342_Intro_Aksoylu 8 Batch Reactors_Fermentation CHE 342_Intro CHE 342_Intro_Aksoylu 9 CSTR CHE 342_Intro CHE 342_Intro_Aksoylu 10 CSTR used in polyethylene production CHE 342_Intro CHE 342_Intro_Aksoylu 11 PFR CHE 342_Intro_Aksoylu CHE 342_Intro Reactants Products 12 Tubular Reactor (each tube is a PFR); methyl 2-methylpropenoate (monomer of PMMA) production; 1:inlet; 2: outlet CHE 342_Intro_Aksoylu CHE 342_Intro 13 Fixed Bed Reactor (a special case of PBR) CHE 342_Intro CHE 342_Intro_Aksoylu 14 Fixed Bed Reactor (a special case of PBR)_Hydrodesulfurization CHE 342_Intro CHE 342_Intro_Aksoylu 15 Midterm I: 13 April 2016 Midterm II: 9 May 2016 Final: TBA Quiz I: 15 March 2016 Quiz II: 29 March 2016 Quiz III: 3 May 2016 Project Assignment: 15 April 2016 Project Deadline: 23 May 2016 CHE 342_Intro_Assesment CHE 342_Intro_Aksoylu