Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for manufacturing fatty acid ester continuously in ultrasonic field

A fatty acid ester and ultrasonic field technology, which is applied in the fields of renewable energy, chemical intermediates, and pesticide auxiliaries, can solve the problems of difficult amplification of ultrasonic equipment, large amount of catalyst, and complicated post-treatment, so as to reduce the amount of catalyst and be easy to control , the effect of continuous process

Inactive Publication Date: 2008-01-23
ZHONGKAI UNIV OF AGRI & ENG
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a method for the continuous preparation of fatty acid esters by physical field-ultrasonic field to promote grease and low-carbon alcohols under alkali catalysis, which solves the difficulty in amplifying ultrasonic equipment in batch-type preparation and the large amount of alkali used as a catalyst , long reaction time, complex post-processing, serious environmental pollution, etc.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for manufacturing fatty acid ester continuously in ultrasonic field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Raw materials: palm oil, methanol, sodium hydroxide

[0026] Dissolve 1.2 grams of sodium hydroxide in 600mL of methanol to obtain an alcohol solution, store it in a tank, and store 2000mL of palm oil in another tank. After passing through the flowmeter, the two liquids are sent to the heat exchanger by the pump for preheating After preheating, the temperature of methanol is 43-45°C, and that of oil is 80-83°C. Then it is pre-mixed by a pipeline mixer, then enters a high-shear emulsifying disperser, and then continuously enters a 28kHz, 300W sonochemical reactor, and the liquid flowing out from the other end of the reactor is centrifuged to obtain crude ester, which is distilled to remove methanol Afterwards, wash once with 0.3mol / L dilute sulfuric acid 40mL, wash twice with tap water, 120mL each time, and then dehydrate at 105°C under a vacuum of 0.03MPa to obtain fatty acid methyl esters, namely biodiesel. Determination, the reaction conversion rate can reach 99.1%. ...

Embodiment 2

[0028] Raw materials: soybean oil, methanol, sodium hydroxide

[0029] Dissolve 1.8g of sodium hydroxide in 600ml of methanol to obtain an alcohol solution, store it in a tank, store 2000mL of soybean oil in another tank, and send the two liquids into the heat exchanger for preheating after passing through the flowmeter After preheating, the temperature of methanol is 50-53°C, and that of oil is 92-95°C. Then it is pre-mixed by a pipeline mixer, then enters a high-shear emulsifying disperser, and then continuously enters a sonochemical reactor with a power of 200W. This sonochemical reactor has two frequencies-25kHz and 50kHz. During work, these two The frequency of ultrasonic waves acts on the liquid at the same time. The liquid flowing out from the other end of the reactor was centrifuged to obtain crude ester. After the crude ester was distilled to remove methanol, it was washed once with 60 mL of 0.4 mol / L dilute phosphoric acid and twice with 120 mL of tap water. Then, a...

Embodiment 3

[0031] Raw materials: palm oil, ethanol, potassium hydroxide

[0032] Dissolve 1.8g of potassium hydroxide in 1500ml of ethanol to obtain an alcohol solution, store it in a tank, store 2000mL of palm oil in another tank, and send the two liquids into the heat exchanger for preheating by the pump after passing through the flowmeter , after preheating, the temperatures of ethanol and oil are both 75-78°C. Then it is pre-mixed by a pipeline mixer, then enters a high-shear emulsification disperser, and then continuously enters a 40kHz, 200W sonochemical reactor. The liquid flowing out from the other end of the reactor was centrifuged to obtain crude ester. After the crude ester was distilled to remove methanol, it was washed once with 100 mL of 0.3 mol / L dilute hydrochloric acid and twice with tap water, 150 mL each time, and then heated at 100°C. The fatty acid ethyl ester is obtained by dehydration under the condition of a vacuum degree of 0.08 MPa, and the reaction conversion ...

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 objective of the invention is to provide a method continuously preparing the fatty acid ester in the ultrasonic field, which relates to the technology fields of the renewable energy, the chemical intermediates and the inert ingredient. The invention comprises the following steps: (1) the alkali is dissolved in the low carbon alcohol to alcoholic solution; (2) the alcoholic solution and the animal fats are first measured, preheated and then are premixed via a pipeline mixer, and continuously enter a high shear emulsified equipment and a sonochemical reactor; the gained product gains the raw ester through centrifugation; (3) the coarse ester removes the low carbon alcohol and is washed by diluted acid or running water, and then carries out the vacuum dehydration to gain the fatty acid ester. The effects of the invention are that adopting the method of the invention can realize rapid and continuous preparation of the fatty acid ester with simple technology and little usage of the catalyst, which solves the problems that the ultrasonic equipments in the intermittent preparation are difficult to enlarge, the reaction time in the traditional method is long, post treatment is complex and the environment pollution is serious.

Description

technical field [0001] The invention relates to the technical fields of renewable energy, chemical intermediates, pesticide auxiliaries, etc., and specifically refers to a method of reacting animal and vegetable oils with low-carbon alcohols in an ultrasonic field using animal and vegetable oils as raw materials and alkali as a catalyst. Process for preparing fatty acid esters. Background technique [0002] In recent years, with the decrease of oil reserves and the concern of human beings on the impact of oil burning on the earth's environment. The development of a new environmentally friendly renewable fuel, biodiesel, has become the goal of many scientists. Biodiesel, mainly fatty acid methyl ester, is a kind of renewable energy. Its emergence can solve the three major problems of energy crisis, environmental protection regulations and agricultural structure adjustment. Because biodiesel does not contain sulfur, aromatic hydrocarbons and other substances, it does not emi...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/587C10G3/00C10L1/02
CPCY02P30/20
Inventor 阎杰宋光泉
Owner ZHONGKAI UNIV OF AGRI & ENG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com