Supercritical CO2 extraction of corn stalk pyrolysis oil

被引：0

作者：

Wang, Jinghua ^{[1
]}

Cui, Hongyou ^{[1
]}

Wei, Shuqin ^{[1
]}

Zhuo, Shuping ^{[1
]}

Wang, Lihong ^{[2
]}

Li, Zhihe ^{[2
]}

Yi, Weiming ^{[2
]}

机构：

[1] Shandong Univ Technol, Sch Chem Engn, Zibo, Peoples R China

[2] Shandong Univ Technol, Shandong Res Ctr Eng & Tech Clean Energy, Zibo, Peoples R China

来源：

2010 ASIA-PACIFIC POWER AND ENERGY ENGINEERING CONFERENCE (APPEEC) | 2010年

关键词：

supercritical; extraction; simulated bio-oil; adsorbent; carbon dioxide; ADSORPTION; ZEOLITE;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Supercritical CO2 extraction was employed to separate simulated and real bio-oil. Effects of adsorbents on enrichment were investigated for a simulated bio-oil, which is composed of acetic acid (AC), propanoic acid (PA), furfural (FR), acetylacetone (AA) and 2-methoxyphenol (MP). Extraction of spiked bio-oil shows adsorbents are able to influence extraction efficiency and selectivity. Appropriate water content in the simulated bio-oil favors in improving extraction efficiency. Extraction with methanol (or ethanol)-modified CO2 affords higher extraction efficiency than that with pure CO2, but might lead to lower extraction selectivities. Using 5A molecular sieve as adsorbent, the extraction efficiencies for MP, FR, PA, AA and AC under 45 degrees C and 20.0 MPa respectively reach up to 100%, 84.9%, 57.8%, 57.1% and 22.8%. In addition, supercritical CO2 extraction of a real bio-oil showed that water content and acidity of the bio-oil after extraction dropped significantly, suggesting remarkable upgrading in heat value and corrosiveness of the bio-oil.

引用

页数：4

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