Análise do processo de pirólise de sementes de Açaí (Euterpe Oleracea, Mart): Influência da temperatura no rendimento dos produtos de reação e nas propriedades físico-químicas do Bio-Óleo / Process analysis of pyrolise of Açaí (Euterpe Oleracea, Mart) seeds: Influence of temperature on the yield of reaction products and physico-chemical properties of Bio-Oil
Abstract
Neste trabalho, investigou-se a influência da temperatura no rendimento de produtos de reação (bio-óleo, gás, e coque) e nas propriedades físico-químicas (índice de acidez, densidade e viscosidade cinemática) do bio-óleo obtido via pirólise de sementes de Açaí (Euterpe oleracea, Mart.), um resíduo rico em lignina-celulose, em escala piloto. A reação de pirólise foi realizada em reator de 143 L, operando em modo batelada a 350, 400 e 450 ºC, 1,0 atmosfera. O bio-óleo foi caracterizado físico-quimicamente em termos de densidade, viscosidade cinemática, índice de acidez e índice de refração. Os rendimentos do bio-óleo, , e gás variaram entre 2,0 e 4,39% (em peso), 26,58 e 29,39% (em peso) e 18,76 e 30,56% (em peso), respectivamente, aumentando com a temperatura do processo, enquanto que da fase sólida (coque) variou entre 35,67 e 52,67% (em peso), diminuindo com a temperatura. As densidades de bio-óleo e viscosidades cinemáticas variaram entre 1,0236 e 1,0468 g/cm³ e 57,22 e 68,34 mm²/s, respectivamente, aumentado com a temperatura, enquanto que os índices de acidez do bio-óleo variaram entre 70,26 e 92,87 mg KOH/g, diminuindo com a temperatura.
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DOI: https://doi.org/10.34117/bjdv7n2-453
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