Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing biodiesel by means of auxiliary compatilizers

A biodiesel and production method technology, applied in biofuel, petroleum industry, liquid carbon-containing fuel, etc., can solve the problems of high cost of environmental protection treatment, large amount of sewage discharge, large investment in equipment, etc., and achieve low manufacturing cost and fast response The effect of speeding up and shortening the reaction time

Inactive Publication Date: 2015-06-10
QUANZHOU NAISI MATERIAL TECH
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the acid value of the oil used is greater than 0.5, the industry usually uses the "two-step" production process of first carrying out the oil acid-catalyzed esterification reaction, and then carrying out the base-catalyzed transesterification reaction (that is, first carrying out the oil acid-catalyzed esterification, and then carrying out the The acid value is removed by esterification, and then the intermediate step of water washing is carried out to reduce the acid value to below 0.5, and then the transesterification reaction is carried out with sodium methoxide as a catalyst) to avoid oil saponification. This method has complicated procedures, large equipment investment, and sewage discharge Large quantity, high cost of environmental protection treatment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Dissolve 40g of NaOH in methanol to make a 10% NaOH methanol solution by mass.

[0021] (2) Put 1000g of waste vegetable oil with an acid value of 4 into a reaction kettle with high-speed stirring equipment (500 rpm or more), and add 30g of fatty acid methyl ester and 300g of methanol, and stir vigorously at high speed for 2 hours, and the material flows uniformly of emulsion.

[0022] (3) Add 20g of borax to the emulsion of (2) above, continue stirring at high speed for 1.5h, then slowly add the NaOH methanol solution of (1) above, and react at 70°C for 1.5h.

[0023] (5) After the reaction is completed, the temperature of the reaction material is lowered to 40° C., and the by-products such as glycerol in the lower layer are separated to obtain crude biodiesel.

[0024] (6) Atmospheric distillation of crude biodiesel to recover excess short-chain alcohols

[0025] (7) After molecular distillation, the qualified biodiesel is obtained.

Embodiment 2

[0027] (1) Dissolve 30g of KOH in methanol to make a KOH methanol solution with a concentration of 8% by mass.

[0028] (2) Add 1000g of waste oil with an acid value of 5 to a reaction kettle with high-speed stirring equipment (400 rpm or more), add 10g of fatty acid methyl ester, 400g of ethanol, stir vigorously at high speed for 1 hour, and the material flows uniformly of emulsion.

[0029] (3) Add 30g of sodium carbonate to the emulsion of (2) above, continue stirring at high speed for 1 hour, then slowly add the KOH methanol solution of (1) above, and react at 70°C for 0.5h.

[0030] (5) After the reaction is completed, the temperature of the reaction material is lowered to 40° C., and the by-products such as glycerol in the lower layer are separated to obtain crude biodiesel.

[0031] (6) Atmospheric distillation of crude biodiesel to recover excess short-chain alcohols

[0032] (7) After molecular distillation, the qualified biodiesel is obtained.

Embodiment 3

[0034] (1) Dissolve 12g of KOH in methanol to make a KOH methanol solution with a concentration of 10% by mass.

[0035] (2) Add 1000g of jatropha fruit oil with an acid value of 3 into a reaction kettle with high-speed stirring equipment (over 400 rpm / min), add 10g of fatty acid methyl ester, 200g of methanol, stir vigorously at high speed for 1h, and the material Forms a flowing, uniform emulsion.

[0036] (3) Add 10 g of potassium dihydrogen phosphate to the emulsion of (2) above, continue stirring at high speed for 1 hour, then slowly add the KOH methanol solution of (1) above, and react at 70°C for 0.5 hours.

[0037] (5) After the reaction is completed, the temperature of the reaction material is lowered to 40° C., and the by-products such as glycerol in the lower layer are separated to obtain crude biodiesel.

[0038] (6) Atmospheric distillation of crude biodiesel to recover excess short-chain alcohols

[0039] (7) After molecular distillation, the qualified biodiese...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for producing biodiesel, in particular to a method for producing biodiesel by means of auxiliary compatilizers, and belongs to the technical field of renewable energy. The biodiesel comprises, by weight percentage, 100% of grease, 20%-120% of short chain alcohol, 1%-10% of fatty acid methyl ester, 0.5%-4% of catalysts and 0.1%-5% of alkalescence buffering substrates. The method includes the specific steps that the grease is added to a reaction kettle of high-speed stirring equipment, the short chain alcohol and the fatty acid methyl ester are then added, high-speed stirring is conducted for 1 h-4 h under the room temperature to form uniform emulsions, the alkalescence buffering substrates are added, after high-speed stirring is conducted for 1 h-4 h, KOH or NaOH is dissolved in methyl alcohol to prepare 8%-10% KOH or NaOH methyl alcohol solutions which serve as the catalysts and are added, and reflux reaction occurs for 0.5 h-4 h under the temperature of 50 DEG C-120 DEG C; after reaction is completed, a reaction material is cooled to 40 DEG C, standing separation is carried out, by-products such as glycerinum on the lower layer are removed, and a biodiesel crude product is obtained; atmospheric distillation is carried out on the biodiesel crude product, and redundant short chain alcohol is recycled; molecular distillation is conducted, and the biodiesel reaching the standard is obtained. The producing process is simple, the conditions are mild, post-treatment is simple, production cost is low, process economy is good, large-scale application and popularization prospects are achieved, and industrialization is easily achieved.

Description

technical field [0001] The invention relates to a method for producing biodiesel, in particular to a method for producing biodiesel with an auxiliary compatibilizer, and belongs to the technical field of renewable energy. Background technique [0002] Liquid fuel is one of the cornerstones of maintaining the normal operation of modern society and is the most important power fuel. With the development of the world economy, global fossil resources are becoming increasingly depleted, and the supply situation of liquid fuel is becoming increasingly severe. Energy shortage has become one of the important factors restricting the economic development of all countries in the world. my country imported 120 million tons of crude oil in 2004, accounting for 44% of the total processed crude oil. Excessively high import dependence has threatened the national energy strategy security. In terms of energy consumption structure, my country is a big diesel consumer. In 2003, it consumed 83.0...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C11C3/10C10L1/02
CPCC10L1/02C11C3/10Y02E50/10
Inventor 陈丽琴陈嘉炼陈昕雄
Owner QUANZHOU NAISI MATERIAL TECH