Production process of biological diesel oil and apparatus

A biodiesel and production method technology, applied in the preparation of biological raw materials, biofuels, liquid hydrocarbon mixtures, etc., can solve the problems of unfavorable continuous production of biodiesel, low catalytic efficiency of solid catalysts, etc., achieve rapid production, reduce difficulty, The effect of reducing usage

Inactive Publication Date: 2013-01-23
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the problem that the catalytic efficiency of the solid catalyst is not high in the prior art, and the use of the tank reactor as a device for producing biodiesel is not conducive to the continuous production of biodiesel, and to provide a synergistic combination of ultrasonic waves and plug flow reactors. Function, improve the existing batch production process of biodiesel, realize the continuous, clean and efficient production of biodiesel and reduce the use of liquid catalyst. The production method and device of biodiesel

Method used

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  • Production process of biological diesel oil and apparatus

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Effect test

Embodiment 1

[0031] The raw material oil of the present invention is made from animal and vegetable fats and oils, and its acid value is less than 2mgKOH / g raw material oil. The production method of present embodiment biodiesel comprises the steps:

[0032] (1) After mixing the anhydrous methanol and KOH solution, they are mixed with the raw material oil and pumped into the mixer for full mixing, wherein the molar ratio of anhydrous methanol to the raw material oil is 4:1, and the weight ratio of KOH to the raw material oil is 0.1%; ( 2) The above mixture is input into a tubular plug flow reactor with a temperature of 40° C. (the length and diameter ratio of the plug flow reactor is greater than 50), and the tubular plug flow reactor is contained within the scope of the ultrasonic generating device (3) anhydrous methanol and feedstock oil undergo transesterification in a tubular plug flow reactor under the action of a liquid alkaline catalyst to generate crude biodiesel and glycerol, and g...

Embodiment 2

[0037] In this embodiment, the reaction temperature in the plug flow reactor is 55° C., the liquid alkaline catalyst is NaOH solution, its weight ratio to raw oil is 0.3%, and the molar ratio of anhydrous methanol to raw oil is 6:1. The reaction conditions are adopted to ensure the rapid progress of the chemical reaction, and the content of methanol is also appropriate, which can not only drive the reaction well, but also facilitate the recovery of methanol.

[0038] Other features of this embodiment are the same as those of Embodiment 1, and will not be described in detail here.

Embodiment 3

[0040] In this embodiment, the reaction temperature in the plug flow reactor is 62°C, the liquid alkaline catalyst is NaOH solution, its weight ratio to raw oil is 0.4%, and the molar ratio of anhydrous methanol to raw oil is 10:1.

[0041] Other features of this embodiment are the same as those of Embodiment 1, and will not be described in detail here.

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Abstract

The invention discloses a production method of a biodiesel, including the following steps: (1) absolute methanol is mixed with a liquid basic catalyst, then mixed with raw oil, and pumped into a mixer; (2) the mixture is input into a tube-typed piston flow reactor which is enclosed within the scope of an ultrasonic generator; (3) the absolute methanol and the raw oil generate coarse biodiesel and glycerin under the action of the liquid basic catalyst; and (4) the coarse biodiesel is subjected to washing, separation and refining, and the biodiesel is obtained; the invention also provides a device for producing the biodiesel comprising a liquid basic catalyst / methanol tank, a metering pump, a mixer, the piston flow reactor and a glycerin separator which are sequentially connected, wherein, one end of the mixer is connected with an intake line of raw oil, and the glycerin separator is respectively output and connected to a glycerol gathering tank and a storage tank of coarse biodiesel; and the device also includes the ultrasonic generator which reacts on the piston flow reactor. The invention can realize efficient and fast production of biodiesel, reduce the usage of the liquid basic catalyst, and reduce the difficulty of post-processing.

Description

technical field [0001] The invention relates to a method and device for producing biodiesel. Background technique [0002] Biodiesel refers to fatty acid alkyl esters produced from animal and vegetable oils through esterification or alcoholysis. This type of fuel has the following advantages: first, it has a wide range of sources of raw materials, and can use various waste animal and vegetable oils and large-scale planted oil plant fruits; second, it has almost the same combustion performance as ordinary petrochemical diesel, and can be easily applied to existing diesel oil The third is that it is safer in terms of storage, transportation and use (no corrosion of the solvent, non-flammable and explosive); the fourth is good environmental performance, compared with petrochemical diesel, the amount of toxic exhaust emissions can be reduced by 90%, which is environmentally friendly. [0003] In recent years, biodiesel has developed rapidly in the world. In 2006, the global pr...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C10G3/00
CPCY02E50/13Y02E50/10Y02P30/20
Inventor袁振宏吕鹏梅黎达成王忠铭罗文张祖泽
OwnerGUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI