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Publication Title | International Journal of Renewable Energy Technology Research

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International Journal of Renewable Energy Technology Research

Vol. 2, No. 12, December 2013, PP:249-255, ISSN: 2325-3924 (Online) Available online at http://ijretr.org

Research article

Design, Fabrication and Evaluation of a Novel Biodiesel Processor System

Ahmad Abbaszaadeh1, Barat Ghobadian1**, Gholamhassan Najafi 1, Ali Motevali1

Department of Agriculture Machinery Engineering, Tarbiat Modares University, Tehran, Iran

Corresponding Author Email: Barat Ghobadian, ghobadib@modares.ac.ir, Tel: +98 021 445804819; FAX: 98-21-44292200

Abstract

In this research work, to reduce the separation time of glycerin, increase in efficiency and purity of recovered methanol and pure biodiesel production, a novel biodiesel processor system is designed, fabricated and evaluated. In fabricated system, batch type stirred tank reactor (STR) with a capacity of 70 liters in which to more efficient mixing, two methods of mechanical and hydraulic mixing has been provided. In order to increase the purity and efficiency of methanol recovery process in designed system, facilities in the vacuum distillation method is provided. One of the innovations used in this system in addition of sediment glycerin separation, is utilizing electrostatic Coalescing method in separation of glycerin in which the high voltage / low current is used. Another innovation used in this system, is possibility of using ion exchange dry wash by absorbing column and magnesol powder as filter aid. All tanks, pumps, piping, valves are made from 316 Stainless Steel to ensure no erosion. Biodiesel produced by fabricated system showed close value to the requirements of biodiesel standard. Copyright © IJRETR, all rights reserved.

Keywords: biodiesel processor, glycerin separation, methanol recovery, dry wash purification.

1. Introduction

Transestrification is the most common method for biodiesel production in which, a reaction takes place. Biodiesel production takes place throughout an alcoholysis reaction known as transesterification, where triglycerides with an alcohol and a catalyst react to generate esters of the alcohol called biodiesel, and glycerol as a by-product [1-2]. Because vegetable oil and alcohol form two almost immiscible phases, no matter what type of catalyst is selected, a mixing of the two reagents is required in order to break the alcohol phase into small drops, thus providing sufficient interfacial area for the reaction [3]. Also, for intensifying the process, the reaction temperature should be increased. For this purpose a mixing system as biodiesel processor system should be prepared. The current Biodiesel

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