Case study 3-Allyl Chloride Plant Allyl alcohol and glycerin can be synthesized from allyl chloride (3-chloro-1- propene) [19]. Gas-phase thermal chlorination of propene has been proposed as a route to allyll alcohol. In this process, shown in Figure 2.4.1, a process furnace heats propylene, which then mixes with chlorine in a mixer. The intersecting streams in the eductor-mixer create turbulence and hence enhance mixing. The chlorine reacts with propylene inside the tubes of two parallel shell-and-tube reac- tors. Dowtherm A, a heat-transfer fluid used at high temperatures, removes the enthalpy of reaction. A pump circulates the Dowtherm A through the shell of the reactors and through a water cooler. The products flow through air-cooled heat exchangers, where fans blow cool air across the tubes of the cooler to remove heat. The cooled product stream then condenses to form a crude allyl chloride stream containing several by-products. Finally, the crude allyl chloride flows to a separa- tion section of the process. Flue Gas Reactor Air Cooler Cnade Propylene Chloride Venturl Mber Chlorine Allyl-chloride-synthesis process. Design-T-Design-Material 1 psia EquipmentTNoT. Sze Units T Temperature Pressure 1 5.5x10 u2,000 CS Propylene Heater 330 60 CS/CS Chlorinators 2,000 (Fixed-Tube Sheet) 1 7.5 hp 550 CS assume Dowtherm Pump 30 psig 290 gpm 65 fthead) (Centrifugal Pump) Air Coolers 2 145 n 1,040 50 Dowtherm Cooler 550 (Fixed-Tube Sheet) Condenser 200 50 CS/CS (Fixed-Tube Sheet) Eductor-Mixer a. CS/CS means carbon steel shell and carbon steel tubes. 17560Ibh CS 1,000 Use the information above and any sources in the literature to answer these questions. 1. Calculate the total initial investment 2. If the plant is put in operation for 15 years, Calculate the capital recovery for the chemical plant if the MARR is 12%. 3. What is the payback period (for life time in point 2) assuming no return. 4. Correct your answers for an inflation of 10%. State any assumption in your solution. Case study 3-Allyl Chloride Plant Allyl alcohol and glycerin can be synthesized from allyl chloride (3-chloro-1- propene) [19]. Gas-phase thermal chlorination of propene has been proposed as a route to allyll alcohol. In this process, shown in Figure 2.4.1, a process furnace heats propylene, which then mixes with chlorine in a mixer. The intersecting streams in the eductor-mixer create turbulence and hence enhance mixing. The chlorine reacts with propylene inside the tubes of two parallel shell-and-tube reac- tors. Dowtherm A, a heat-transfer fluid used at high temperatures, removes the enthalpy of reaction. A pump circulates the Dowtherm A through the shell of the reactors and through a water cooler. The products flow through air-cooled heat exchangers, where fans blow cool air across the tubes of the cooler to remove heat. The cooled product stream then condenses to form a crude allyl chloride stream containing several by-products. Finally, the crude allyl chloride flows to a separa- tion section of the process. Flue Gas Reactor Air Cooler Cnade Propylene Chloride Venturl Mber Chlorine Allyl-chloride-synthesis process. Design-T-Design-Material 1 psia EquipmentTNoT. Sze Units T Temperature Pressure 1 5.5x10 u2,000 CS Propylene Heater 330 60 CS/CS Chlorinators 2,000 (Fixed-Tube Sheet) 1 7.5 hp 550 CS assume Dowtherm Pump 30 psig 290 gpm 65 fthead) (Centrifugal Pump) Air Coolers 2 145 n 1,040 50 Dowtherm Cooler 550 (Fixed-Tube Sheet) Condenser 200 50 CS/CS (Fixed-Tube Sheet) Eductor-Mixer a. CS/CS means carbon steel shell and carbon steel tubes. 17560Ibh CS 1,000 Use the information above and any sources in the literature to answer these questions. 1. Calculate the total initial investment 2. If the plant is put in operation for 15 years, Calculate the capital recovery for the chemical plant if the MARR is 12%. 3. What is the payback period (for life time in point 2) assuming no return. 4. Correct your answers for an inflation of 10%. State any assumption in your solution
