Paper Details

Polyester is a category of polymers which contain the ester functional group in their main chain. Althoughthere are many polyesters, the term "polyester" as a specific material most commonly refers to polyethyleneterephthalate (PET). A chemical reaction bonding monomers together to make a polymer is called polymerization.Polymers are substances whose molecules have high molar masses and are composed of a large number of repeatingunits. Pure Terephthalic Acid (PTA) and Mono Ethylene Glycol (MEG) are mixed to produce oligomer and water in theEsterification section. The oligomer is then pumped to polymerisation section after addition of chemicals namelycatalyst, TiO2, DEG & glycol. The oligomer is converted to polymer through polymerisation reaction and is sent tospinning and the spin product is sent for drawing after which it is baled and cut. After cutting, the product is sent towarehouse. We started with the study of polyester and studies its manufacturing process available. We also formed outits application and uses and its supply and demand of polyester. Also advantages and disadvantages here with we comeacross the present demand in the market of polyester and the current supply rate of polyester. The proposed work in thisproject is the plant study and material balance of polyester plant installed in Reliance Industries Pvt. Ltd. in Patalganga,where we study the manufacturing of polyester by using its raw materials pure terephthalic acid and mono ethyleneglycol. Also the production of polymer is a two step reaction process that is esterification and polycondensation. Theproduction of polyester polymer is a two step reaction process i.e. Esterification and Polymerisation. Esterification is theformation of monomer and polycondensation is the formation of oligomer and polymer chain building. The esterificationreaction is technically an acid –base reaction that forms salt and water. Terephthalic Acid (TPA) is the acid andEthylene Glycol (EG) is the base and the monomer DiHydroxyEthyl Terephthalate, DHET is the salt with water alsobeing a product of the reaction. Polycondensation is the actual “chain building” step in the making of polyester polymer.The reaction in order to proceed forward, requires the addition of a catalyst, typically antimony, as well as heat andvacuum. The chemical linkage between two molecules forming one large molecule.Material balance importance first stepwhen designing a new process or analysing. They are almost always pre requisite to all other calculation in the solutionof process engineering a material balance is an accounting for material. Thus material balance are often compared tothe balancing of current account. They are used in industry to calculate mass flow rates of different stream entering orleaving chemical or physical process.

RiteshIngale, Rushikesh Thakur, Mr.Vijay Sharma, M.A.Suryawanshi, V.BMane, “DESIGN AND STUDY OF MANUFACTURING OF POLYESTER PLANT USING PTA AND MEG”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 4, pp. 1066-1073, April 2017.