Pra Rancangan Pabrik Pembuatan Tanin dari Daun Psidium Guajava dengan Ekstraksi Pelarut Metanol: Kapasitas Produksi 2.000 Ton/Tahun dan Tugas Khusus Rancangan Keteknikan Spray Dryer

Abstract

Tannin is an organic compound that is used as an alternative of red lead, preserver, animal skin tanner, antiseptic for burn scars, pesticide, etc. The making of tannin presented are using Psidium guajava (guava) leaves as its main ingredient that is dried first before the extraction process. Dried guava leaves hereafter mashed and mixed inside an extractor with methanol solvent. The extraction process condition is at 30˚C and 1 atm pressure. Afterwards, the sludge is separated from its solid by using filter press and continued to the vaporizer to separate the methanol solvent. Those wet tannin then were spray dried and by atomization process becomes tannin powder that is later packed as final product. The tannin manufacturing plant using guava leaves from methanol solvent extraction designed with capacity of 2.000 tonnes/year and 330 days of work every year. The factory location is planned at Belawan II, Kecamatan Medan Belawan, Sumatera Utara, Indonesia with total area 7.122,2 m2 The economy analysis for the preliminary tannin manufacturing from Psidium guajava leaves, is listed below. • Capital Invesment (CI) = Rp. 298,361,763,988.77 • Total Working Cost (TWC) = Rp. 163,231,959,084.68 • Sales Yield = Rp. 299,912,845,041.48 • Net Profit = Rp. 88,704,362,992.56 • Profit Margin (PM) = 29.58 % • Break Even Point (BEP) = 22.51 % • Return on Invesment (ROI) = 29.73 % • Pay Out Time (POT) = 3.36 year • Return on Network (RON) = 49.55 % • Internal Rate of Return (IRR) = 39.13 % By the economic analysis above, the tannin manufacturing plant from Psidium guajava leaves is feasible to be built.