Improvement of Bio-oil Production System by Using Spray Condenser: Investigation of Yields, Properties, and Production Cost

Abstract

This article presented an improvement of bio-oil production system by using the spray condenser, which was developed from previous work. Napier grasses (NG), sugarcane leaves (SL) and rubber leaves (RL) were used as raw material in order to produce as bio-oil. The direct contact heat exchanger called conventional condenser and indirect contact heat exchanger called spray condenser were employed while the bio-oil and the ethanol were also applied as absorber in the spray condenser. The circulating uidized bed reactor was employed to produce the bio-oil by using fast pyrolysis process. The condition generating the highest yield of the bio-oil production whether the conventional condenser or the spray condenser was 60 kg/hr of feed rate and 480°C of bed temperature. From the result of the bio-oil production, it was found that the highest yields of bio-oil production from NG, SL and RL using conventional condenser were 43.73 %wt, 49.47 %wt and 37.00 %wt, respectively. The highest yield of bio-oil production from NG, SL and RL performing on spray condenser and the using of ethanol as absorber were 55.67 %wt, 62.53 %wt and 44.60 %wt, respectively while the highest yield of bio-oil production from RL performing on spray condenser and the using of bio-oil as absorber was 44.60 %wt. The using of the spray condenser and using of the ethanol as absorber can improve the properties of bio-oil such as heating value and can also increase yield of bio-oil, but the viscosity of bio-oil was increased. Besides, the using of spray condenser can increase the e ciency of energy conversion and can decrease the cost production of bio-oil production, it can also solve the problem about the dirty from the volatile or droplet in the bio-oil that was adhesive in the recirculating blower in case of the system using returned NGC to bio-oil production process.

Biofuel Production from Rubber Seeds by Pyrolysis Method using Natural Zeolite Catalyst

“…This plant-based matter has the potential to be transformed into bio-oil. [12], [13] and additional essentials through pyrolysis -high-temperature thermal breakdown of materials in an inert or airless environment [14]. Pyrolysis is a new generation that produces products such as bio-oil, biochar, syngas, and ash that have the potential to generate renewable energy [15].…”

Analisis Termogravimetri dan Dekomposisi Termal pada Produksi Bio-Oil dari Daun Tebu Menggunakan Proses Pirolisis Cepat

“…Penelitian ini merupakan penelitian pengembangan dari alat yang digunakan pada penelitian sebelumnya Treedet et al, 2020) yang diaplikasikan pada rumput gajah (napier grass). Alat yang digunakan pada penelitian ini adalah unit pirolisis cepat (fast pyrolysis) yang menggunakan reaktor circulating fluidized bed yang menggunakan media pasir untuk proses perpindahan panas melalui preheater burner LPG yang disirkulasikan dalam ruang pembakaran.…”