Title:
Purification of Crude Biodiesel Fuel by Electrical Fields - Part II a model for Analysis of a New Separator Using Simplified Concept of Multi Extraction Stages
Author(s):
Kai, T., Nakazato, T., Takanashi, H., Funakawa, T., Iba, M., Maruyama, M.
Document(s):
Paper
Abstract:
A new separator was developed to reduce the amount of wastewater discharged from downstream process of a first generation biodiesel fuel production. In the separator, an emulsification/demulsification technique was applied to remove alkalimetal, methanol and glycerol from crude biodiesel fuels produced with alkali (basic) catalyst. Water phase formed microdroplets after a distribution of a small amount of water into the crude biodiesel fuel. They extracted the metal components, methanol and glycerol, and coalesced in an electrical field. A model was developed to design a separator and to obtain the operating conditions to meet the standard EN14214 and JIS K 2390 concerning the metal concentration. Since the crude biodiesel flowed upward and water flowed downward, a multi stage contact was assumed in the model. The basic data required for the purpose were the distribution coefficient of soap components (metals) between ester phase and water phase in the presence of methanol. In addition, the mass transfer coefficient, the flow rates of crude biodiesel fuel and water, the soap concentration in crude biodiesel fuel were needed. It was found that the mass transfer capacitance coefficient was very high judging from the experimental data.
Keywords:
alkali, biodiesel, esterification, methanol, modelling, transesterification
Topic:
Processes for Fuels from Biomass
Subtopic:
Production and supply of first generation liquid biofuels
Event:
19th European Biomass Conference and Exhibition
Session:
VP3.3.2
Pages:
2039 - 2042
ISBN-13:
978-88-89407-55-4
ISBN-10:
88-89407-55-7
Paper DOI:
10.5071/19thEUBCE2011-VP3.3.2
Price:
FREE
