Integrated Multistage Supercritical Technology to Produce High Quality Vegetable Oils and Biofuels

G. Anitescu, A. Deshpande, P. A. Rice, L. Tavlarides
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引用次数: 2

Abstract

A multi-step integrated technology to produce vegetable oils and biodiesel (BD) is proposed, documented for technical and economic feasibility, and preliminarily designed. The 1 step consists of soybean oil extraction with supercritical (SC) fluids. The 2 step is designated to transform the soybean oil into BD by transesterification (TE) with SC methanol/ethanol. The degradation of glycerol to light fuel products makes this method simple and cost effective by eliminating costly glycerol separation steps. Part of the BD is in-situ consumed by a diesel engine which, in turn, provides the mechanical power to pressurize the system as well as the heat of the exhaust gases for the extraction and TE steps. Different versions of this system can be implemented based on the main target: oil and BD production or diesel engine applications. The efficiency of the combustion and cleaner emissions render the proposed technology attractive for the transportation sector with only TE step needed to provide fuels to engines.
综合多级超临界技术生产高品质植物油和生物燃料
提出了一种多步合成植物油和生物柴油的工艺,并进行了技术经济可行性论证和初步设计。第一步是用超临界(SC)流体萃取大豆油。第二步是将大豆油与SC甲醇/乙醇通过酯交换反应(TE)转化成BD。甘油降解为轻燃料产品,通过消除昂贵的甘油分离步骤,使该方法简单且具有成本效益。部分BD由柴油发动机就地消耗,柴油发动机反过来为系统加压提供机械动力,并为提取和TE步骤提供废气的热量。该系统的不同版本可以根据主要目标实现:石油和BD生产或柴油机应用。燃烧的效率和更清洁的排放使该技术对运输部门具有吸引力,只需TE步骤即可为发动机提供燃料。
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