การผลิตเชื้อเพลิงเหลวจากไพโรไลซิสของยางรถยนต์ใช้แล้วโดยไมโครเวฟ / ภัทรานิษฐ์ รัศมีดารา = Production of liquid fuel from used tire pyrolysis by microwave / Pattranit Russmedara
This article studied the production of liquid derived from used tire pyrolysis induced by microwave under nitrogen atmosphere at a flowrate of 0.05 L/min with various heating rates and reaction time in a range of 102 – 330ºC and 10 – 25 min, respectively. The results indicated that the maximum oil yield was achieved to 50.3 wt% at a heating rate of 102ºC/min for 25 min. It was also found that heating rate and reaction time did not affect the heating value of light oil (ca. 40 KJ/g) and pyrolysis char (ca. 25 KJ/g). The sulfur content in the light oil and pyrolysis char slightly increased with increasing the heating rate. The light oil yield from used tire pyrolysis by microwave has boiling point distribution between gasoline and diesel oil. It can be distilled to 42% of diesel oil and 48% of gasoline. The light oil yield was also distilled as naphtha with maximum content of 45.7 wt% at a heating rate of 102 ºC/min for 20 min. However, the obtained pyrolysis had a large amount of sulfur compoundslight oil. The pyrolysis char produced from used tire pyrolysis by microwave at a heating rate of 153ºC/min for 10 min. This char having surface area of 76.2 m2/g with pore size and pore volum of 139 Aº and 0.26 cm3/g, respectively was employed as the supporter for NiMo catalyst (5 wt% Ni and 16 wt% Mo) for decreasing the sulfur content in the pyrolysis light oil, The NiMo/char catalyst could provid the highest sulfur removal as 16.2% by using 10 g of NiMo/Char catalyst at 400ºC with a heating rate of 153 ºC/min, pyrolysis temperature of 400 ºC for 10 min.
