Pra Rancangan Pabrik Furfural dari Ampas Tebu dengan Proses Supra Yield Kapasitas 2600 Ton/Tahun dan Tugas Khusus: Rancangan Keteknikan Detail Ekstraktor

Abstract

The design of the factory for making furfural from bagasse using the Supra Yield process has a production capacity of 2,600 tons/year and operates for 330 days a year. The main process in this plant design consists of three stages, namely the raw material pretreatment stage, the hydrolysis and dehydration reaction stages, and the purification stage. In the hydrolysis and dehydration stages, a fluidized bed reactor was used which operated at a temperature of 170°C and a pressure of 8 bar for 1 hour. The amount of bagasse needed to reach the annual production capacity is 2,882.368 kg/hour. The factory for making furfural from bagasse using the Supra Yield process is planned to be established in Gresik Regency, East Java Province, with a total factory area of 13,468 m2. The water demand for this factory is supplied from the Begawan Solo River as much as 10,967.110 kg/hour. The planned company organizational form is a Limited Liability Company (PT) with a line and staff organizational structure, and a total of 150 employees. The results of the economic analysis on this factory design are as follows: 1. Capital Investment (CI) : IDR 887.263.424.182 2. Total Cost (TC) : IDR 690,239,632,829 3. Profit Margin (PM) : 48.453% 4. Break Even Point (BEP) : 45.370% 5. Return On Investment (ROI) : 20.165% 6. Pay Out Time (POT) : 4 years11month 7. Return On Network (RON) : 36.608% 8. Internal Rate of Return (IRR) : 17.482% Based on the results of the economic analysis, it can be concluded that the factory for manufacturing furfural from palm fronds using the Supra Yield process is feasible to establish. The specific task that was completed was the detailed engineering design of the Extractor Tank for furfural purification. The designed Extractor Tank is in the form of a stirred tank with a flat bottom with a torispherical dished head lid which has the following specifications: • Extractor tank material : Stainless Steel SA 240 type 316 • Extractor Tank Height : 2,360 m • Extractor Tank Diameter : 1.975 m • Solute nozzle diameter : 2,375 in • Solvent nozzle diameter : 6.625 in • shell thickness : 5/16 in • head thickness : 3/16 in • Stirrer type : Flat leaf turbine 6 • Number of partitions : 4 pieces • Stirrer diameter : 0.687 m • Stirrer height : 0.687 m • Mixing blade width : 0.137 m • Stir bar length : 0.172 m • Bulkhead width : 0.172 m • Power requirements : 1,261 hp