00000ctm a22000003i 4500 UP-99796217612404731 Buklod 20230215105418.0 m |o d | ta 170315s xx d r |||| u| (iLib)UPD-00261912812 DENGII eng LG 993 2015 E62 B33 Baccay, Ma. Eira Clara M. author. Production of propylene glycol via the hydrogenolysis of glycerol over Cu-ZnO/Al2O3 catalysts a plant design by Ma. Eira Clara M. Baccay, Marion Ivy V. Coronel, Rafael G. Madrigal ; Rizalinda L. de Leon, adviser. Quezon City College of Engineering, University of the Philippines Diliman 2015. 434 leaves some illustrations 28 cm text rdacontent unmediated rdamedia volume rdacarrier Submitted in partial fulfillment of the requirements in ChE 142 Chemical Engineering Plant Design. Access exclusively for UP ChE students. Written permission required from the department head for non-ChE and non-UP students or researchers. This design report discusses the viability of constructing and operating of propylene glycol production plant in the Philippines. The plant will produce propylene glycol with crude glycerol, a byproduct of biodiesel production, as reactant via hydrogenolysis in Cu/ZnO/Al2O3 catalysts.Crude glycerol is an attractive raw material due to its abundance and cheap price as a result of the intensive production of biodiesel over the past decade. Propylene glycol (USP/EP grade, 99.8 wt percent) is used as a solvent and preservation in food and tobacco products. It is also used as a raw material in personal and home care products. The potential market of propylene glycol in the country is large due to the positive forecasted growth rate of the personal care, home care, and tobacco industries. Moreover, all the propylene glycol supply in the country comes from imports. The proposed plant will utilize 46.51 percent of the crude glycerol supply in the Philippines in 2015, and is estimated to hold 95.7 percent market share of the projected local demand of propylene glycol in 2018. The process of producing propylene glycol from crude glycerol is divided into three main sections: feed pretreatment section, reaction section, and separation section. During pretreatment, the potassium salts, fatty acid methyl ester (FAME), and the methanol impurities in crude glycerol are removed via ion exchange, decantation, and flash distillation, respectively.The resulting aqueous glycerol is reacted with hydrogen at a hydrogen to glycerol molar ratio of 5:1 in an adiabatic upflow fixed bed reactor of Cu-ZnO/Al2O3 catalysts operating at inlet temperature of 235.00°C and pressure of 3.00 MPa. The reactor effluent undergoes a series of separation units in order to remove unreacted raw materials and reaction byproducts to purify the propylene glycol product. Excess hydrogen is recovered from the reactor effluent via flash distillation is recycled back to the reactor while acetol, methanol, glycerol, and some ethylene glycol are removed via distillation. The remaining ethylene glycol is removed using adsorption to achieve the desired purity of propylene glycol. The plant is composed of 57 equipment: a reactor, three distillation units, three adsorption units, a decanter, three flash vessels, four mixing vessels, eight heat exchangers, three air fin coolers, five storage tanks, four pressurized storage cylinders, 12 pumps, and a compressor. The plant employs a 770.00 kg Cu-ZnO/Al2O3 catalyst bed for the reactor. The utilities used by the equipment in the plant include demineralized water, cooling water, low pressure steam, high pressure steam, and electricity. The proposed plant has an estimated total area of 11,075 m2 and is to be built on a 20,000 m2 vacant lot in the industrial zone along Eulogio Rodriguez Jr. Ave. in Brgy. Ugong, Pasig City. The plant site is situated 21.67 km away from the port of Manila and 2.26 km away from large biodiesel plants. Namely Golden Asia Oil International, Inc. and Pure Essence International, Inc. Safety studies (Relief Scenario Analysis and Hazard and Operability Study) are conducted to determine possible hazard and operability problems that may occur in the plant. Causes and consequences of the hazard and operability problems are identified and determined to recommend appropriate safeguards. Safeguards installed in the plant include locked open valves, check valves, alarms, interlocks, and pressure relief systems. For the profitability analysis, it is assumed that the construction phase takes two years and that the plant will be fully operational on the third year, right after construction. Profitability analysis shows that that the proposed plant is not profitable for a project life of 15 years, as indicated by a negative net present value. The sensitivity analysis shows that the profitability of the plant is most sensitive to or is greatly affected by changes in the product cost. Methoxypropanol. Chemical plants Design and construction. Chemical engineering plant design ChE 142 College of Engineering, University of the Philippines Diliman. Coronel, Marion Ivy V. author. Madrigal, Rafael G. author. De Leon, Rizalinda L. adviser. Thesis FI UP UPD DENG-II LG 993 2015 E62 B33 Thesis