Question 6 Ethylenediamine is used to produce chelating agents and carbamate fungicides. Monoethanolamine (MEA), reacts with ammonia and hydrogen to produce ethylenediamine. The reaction occurs in the gas phase over a catalyst at temperatures 250 bar (246.7 atm). The products are: ethylenediamine (EDA) - 74%; diethyltriamine (BETA) - 8%; piperazine (PIP) - 4%; aminoethylpiperazine (AEP) -10%; hydroxyethylpiperazine (HEP) - 4%. To allow time for maintenance during the year, the plant will operate only for 8000 h during the year. The production rate is 10,000 tonnelyr. Data: Fixed Capital Cost 10.3x106. Life of the plant 10 years. Interest Rate 10 % /yr Land Cost 1,5% depreciable capital cost Land Development Cost 2.1% depreciable capital Cost Total Raw Material Cost 0.90/kg of product Table Q6a. Utility Costs (per kg of total products) Utility Consumption per kg of total product Cost Electricity 3.56 x10J 4.17 x 10/J Steam (1.03 kPa) 18.1 kg 1.13 x 10"/kg Water 0.1528 m 3.17 x 102 /m Table Q6b. Labour Costs Operating Labour Operating Supervision Quality Control Maintenance Labour 24/h 0.20 x Operating Labour Cost 0.20 x Operating Labour Cost 0.027 x Fixed Capital Cost Table Q6c. Other Material costs Maintenance Material 0.018 x Fixed Capital Cost Operating Supplies 0.0075 x Fixed Capital Cost Table Q6d. Other costs Depreciation Costs Property taxes Insurance Plant overhead cost (1 - i)x(depreciable capital cost)/plant life 2% fixed capital cost 1% fixed capital cost 72% x (direct labour + supervision) a) Calculate the depreciable capital cost. b) Determine the total utility costs. c) Determine the total direct production costs. d) Determine the total indirect production costs. e) Find the total production cost per year f) Find the production cost of one kilogram of total product./ Question 6 Ethylenediamine is used to produce chelating agents and carbamate fungicides. Monoethanolamine (MEA), reacts with ammonia and hydrogen to produce ethylenediamine. The reaction occurs in the gas phase over a catalyst at temperatures 250 bar (246.7 atm). The products are: ethylenediamine (EDA) - 74%; diethyltriamine (BETA) - 8%; piperazine (PIP) - 4%; aminoethylpiperazine (AEP) -10%; hydroxyethylpiperazine (HEP) - 4%. To allow time for maintenance during the year, the plant will operate only for 8000 h during the year. The production rate is 10,000 tonnelyr. Data: Fixed Capital Cost 10.3x106. Life of the plant 10 years. Interest Rate 10 % /yr Land Cost 1,5% depreciable capital cost Land Development Cost 2.1% depreciable capital Cost Total Raw Material Cost 0.90/kg of product Table Q6a. Utility Costs (per kg of total products) Utility Consumption per kg of total product Cost Electricity 3.56 x10J 4.17 x 10/J Steam (1.03 kPa) 18.1 kg 1.13 x 10"/kg Water 0.1528 m 3.17 x 102 /m Table Q6b. Labour Costs Operating Labour Operating Supervision Quality Control Maintenance Labour 24/h 0.20 x Operating Labour Cost 0.20 x Operating Labour Cost 0.027 x Fixed Capital Cost Table Q6c. Other Material costs Maintenance Material 0.018 x Fixed Capital Cost Operating Supplies 0.0075 x Fixed Capital Cost Table Q6d. Other costs Depreciation Costs Property taxes Insurance Plant overhead cost (1 - i)x(depreciable capital cost)/plant life 2% fixed capital cost 1% fixed capital cost 72% x (direct labour + supervision) a) Calculate the depreciable capital cost. b) Determine the total utility costs. c) Determine the total direct production costs. d) Determine the total indirect production costs. e) Find the total production cost per year f) Find the production cost of one kilogram of total product./
