Explain the theoretical principles behind optimizing reactor design for maximal yield and selectivity in complex chemical transformations.
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This includes knowing the reactants, products, and any potential by-products. It is also important to understand the reaction kinetics, including reaction rates, activation energies, and the effects of temperature and pressure. Show more…
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Problem 2: Optimal Reactor Design Consider the design of a continuous-stirred tank reactor (CSTR) for the chlorination of benzene (Fig. 1) with the following reactions taking place: C6H6 + Cl2 -> C6H5Cl + HCl C6H5Cl + Cl2 -> C6H4Cl2 + HCl where the rate constants k1 and k2 [h^-1] are known and the feed flow rate Fi [kmol/h] and reactor volume V [m^3] will be design variables. Figure 1: The continuous-stirred tank reactor for the chlorination of benzene. For simplicity, the reactions will be first-order (no dependence on Cl2) with respect to benzene (A) and chlorobenzene (B). The molar volumes of each species are: Va = 8.937 * 10^2 m^3/kmol, Vb = 1.018 * 10^-3 m^3/kmol, and Vc = 1.13 * 10^-1 m^3/kmol with dichlorobenzene as C. The feed is considered to be pure A (ignoring Cl2). The rate constants are k1 = 0.40 h^-1 and k2 = 0.055 h^-1. 1. From any available source, find the rate of reaction as a function of mole fraction, concentration, or partial pressure. 2. Find the activation energy of the reaction. 3. Design a reactor that can handle this reaction according to the given data. 4. Mention the design constraints and assumptions. 5. Verify the design using HYSYS and Polymath software. 6. Mention the utility requirement if possible. 7. Mention any environmental health and safety impact of this process. 8. Mention any economic, social, and cultural issues.
Adi S.
If you wanted to design a new industrial catalyst based on some theoretical molecule, could you use?
Select the experimental set-ups and purification techniques needed to maximize the yield and purity of the 'target' organic molecules. For the set-ups, draw the laboratory equipment or industrial set-up that will be use to synthesize the 'target' organic molecule. (Place here the picture of the set-ups that will be used in the synthesis. Label each part of the picture. If possible, define the control parameters (i.e. temperature, pressure, pH, etc.) of each step of the synthesis.) For the purification techniques, write the procedure to perform the purification technique needed to separate the 'target' organic molecule from the reaction 'by-products'. (Write here the procedure of the purification steps that is necessary to get high purity of the 'target' organic molecule. If possible, include the detailed amounts of the solvent, precipitating agent, and/or stationary phase for chromatographic techniques.
Riaz A.
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