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Process for non-catalytically producing biodiesel fuel without yielding by-product

a biodiesel and non-catalytic technology, applied in the direction of fuels, fatty acid chemical modification, fatty oil/acid recovery from waste, etc., can solve the problems of inability to utilize glycerin as heat source, superfluous supply of glycerin, and lack of such a technology

Inactive Publication Date: 2006-12-28
INC ADMINISTRATIVE AGENCY NAT AGRI & BIO ORIENTED RES ORG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a superfluous supply of glycerin in Japan.
Disadvantageously, glycerin cannot be utilized as a heat source due to its low calorific value.
Although there is a strong demand for the production of biodiesel fuel without the generation of glycerin, there currently exists no such technique.
With a catalytic process, however, a catalyst (for example, sodium hydroxide) contaminates the reaction product.

Method used

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  • Process for non-catalytically producing biodiesel fuel without yielding by-product

Examples

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example 1

[0055] According to the procedure described below, biodiesel fuel was produced from commercially available canola oil using the apparatus shown in FIG. 1. A coil form HC-22 reaction tube (Hastelloy C; inner diameter: 1.8 mm; length: 7.8 m; interior volume: approximately 20 ml; Mitsubishi Materials Corporation) was used.

[0056] Canola oil (Oilio®, Nisshin OilliO, Ltd.) was placed in a tank 1 for starting materials and methanol (reagent chemicals, Wako Pure Chemical Industries, Ltd.) was placed in a tank 2 for starting materials. A delivery pump was adjusted so that the mixing ratio of canola oil to methanol became 2:1. The temperature in the reaction tube was 395° C., the pressure therein was 40 MPa, the time necessary for passing through the reaction tube was 4 minutes, and the temperature at the time of injection was 270° C. Given the circumstances, the resulting biodiesel fuel was comprised of approximately 50% various fatty acid methyl esters by weight, approximately 25% monoacyl...

example 2

[0057] According to the procedure described below, biodiesel fuel was produced from waste cooking oil discharged from households using the apparatus shown in FIG. 1. A coil form HC-22 reaction tube (inner diameter: 1.8 mm; length: 7.8 m; interior volume: approximately 20 ml) was used.

[0058] First, large impurities such as residues remaining after deep-frying were exclusively removed from waste cooking oil discharged from households without pretreatment, such as dehydration or removal of free fatty acids. A delivery pump was adjusted so that the volume ratio of the waste cooking oil to methanol became 2:1.

[0059] The temperature inside the reaction tube was 380° C., the pressure therein was 40 MPa, the time necessary for passing through the reaction tube was 4 minutes, and the temperature at the time of injection was 270° C. Given the circumstances, the product had a coefficient of viscosity of 24.3 mPa*sec. This value was larger than that of common biodiesel fuel (8.6 mPa*sec). The...

example 3

[0061] According to the procedure described below, biodiesel fuel was produced from commercially available lard using the apparatus shown in FIG. 1. A coil form HC-22 reaction tube (inner diameter: 1.8 mm; length: 7.8 m; interior volume: approximately 20 ml) was used.

[0062] Lard (high-quality lard; fat content: 99.5%; Miyoshi Oil & Fat Co., Ltd.) was placed into a tank 1 for starting materials, and the content of the tank was heated and maintained at 60° C. in order to improve the fluidity. Methanol (reagent chemicals, Wako Pure Chemical Industries, Ltd.) was placed in a tank 2 for starting materials. A delivery pump was adjusted so that the mixing ratio of lard to methanol became 1:2. The temperature in the reaction tube was 500° C., the pressure therein was 40 MPa, the time necessary for passing through the reaction tube was 8 minutes, and the temperature at the time of injection was 300° C. Given the circumstances, the resulting biodiesel fuel was comprised of 56% various fatty ...

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Abstract

This invention provides a process for producing biodiesel fuel from vegetable or animal oils and fats or wastes thereof and methanol that does not use a catalyst and does not generate glycerin as a by-product. In this process, vegetable or animal oils and fats or wastes thereof are mixed with methanol, and a methanolysis reaction is carried out at a reaction temperature of between 370° C. and 500° C., a reaction pressure of between 20 MPa and 60 MPa, and a reaction period of between 4 minutes and 12 minutes without the use of a catalyst. This invention also provides biodiesel fuel that is mainly composed of fatty acid methyl esters, monoacylglycerol, and diacylglycerol.

Description

TECHNICAL FIELD [0001] The present invention relates to a process for producing biodiesel fuel from vegetable or animal oils and fats or waste oils thereof (hereafter referred to as “wastes thereof”) and methanol. BACKGROUND ART [0002] Recently, environmental conservation awareness has increased, and thus, so-called “biodiesel fuel” produced from vegetable or animal oils and fats or wastes thereof has been increasingly used. [0003] In general, biodiesel fuel refers to fuel that is mainly composed of fatty acid methyl esters obtained by subjecting triacylglycerol, which is a main component of vegetable or animal oils and fats or wastes thereof, to transesterification with methanol (hereafter referred to as a “methanolysis reaction”). [0004] The methanolysis reaction of triacylglycerol with methanol can be divided into three phases. In the first phase, a fatty acid methyl ester molecule and a diacylglycerol molecule are generated from a triacylglycerol molecule and a methanol molecule...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10L1/00C10L1/02C11B13/00C11C3/00
CPCC10L1/026Y02E50/13C11C3/003Y02E50/10Y02P30/20C10L1/182
Inventor IIJIMA, WATARUKOBAYASHI, YUICHITANIWAKI, KEN
Owner INC ADMINISTRATIVE AGENCY NAT AGRI & BIO ORIENTED RES ORG
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