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

Biodiesel synthesized by catalyzing vegetable fat with potassium phthalimide

A technology for catalyzing plants and potassium phthalimide with potassium phthalimide is applied in the field of chemical industry and can solve the problems of inability to separate homogeneous catalysts, easy deactivation of heterogeneous catalysts, long reaction time and the like , to achieve the effect of high conversion rate, convenient post-processing, safety and environmental protection problem solving

Pending Publication Date: 2022-07-08
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that the homogeneous catalyst cannot be separated and the heterogeneous catalyst is easily deactivated, the reaction time is long and the dosage is large in the synthesis of biodiesel by transesterification, it is proposed to use potassium phthalimide to catalyze oil and methanol to produce biodiesel reaction process

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
  • Biodiesel synthesized by catalyzing vegetable fat with potassium phthalimide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] The potassium phthalimide was prepared by conventional methods. 3 kilograms of phthalimide and 18 kilograms of dehydrated alcohol were added together in a 0.2 cubic reactor, stirred at room temperature for 10 minutes, and 100 kilograms of saturated ethanolic potassium hydroxide solution were slowly added dropwise simultaneously, stirred for 2 hours, filtered, and filtered. The cake was washed with absolute ethanol until neutral, and dried at 80° C. for 1 hour to obtain 3.69 kg of potassium phthalimide as a yellowish powder.

[0013] Dissolve 0.6 kg of potassium phthalimide in 16 kg of methanol, put it into a 0.2-cubic esterification reactor together with 60 kg of rapeseed oil, and heat and stir at 60 °C for 2 h. After the reaction was completed, excess methanol was distilled off at 78°C. Then in the material separator at room temperature, it is divided into upper and lower layers, the upper oil phase is the target product biodiesel, and the lower layer is the by-produc...

Embodiment 2

[0015] The yellowish powder potassium phthalimide 0.65 kilograms obtained in the example one is dissolved in 18 kilograms of methanol, and is dropped into the esterification reactor of 0.2 cubic meters with 60 kilograms of soybean oil, The reaction was heated and stirred at 55°C for 1.5h. After the reaction was completed, excess methanol was distilled off at 79°C. Then in the material separator at room temperature, it is divided into upper and lower layers, the upper oil phase is the target product biodiesel, and the lower layer is the by-product glycerol and catalyst mixture. The lower layer liquid was placed in a catalyst recovery tank and placed at 3°C ​​for 8 hours, so that the catalyst dissolved in glycerol was precipitated, and the catalyst was separated from the glycerol by centrifugation. The centrifuged catalyst was washed with a small amount of ethanol to remove a small amount of glycerol remaining on the surface. Properly replenishing the lost catalyst, the oil co...

Embodiment 3

[0017] The yellowish powder potassium phthalimide 0.66 kilograms obtained in the example one is dissolved in 19 kilograms of methanol, drops into the esterification reactor of 0.2 cubic meters with 60 kilograms of corn oil, The reaction was heated and stirred at 62°C for 2.2h. After the reaction, excess methanol was distilled off at 80°C. Then in the material separator at room temperature, it is divided into upper and lower layers, the upper oil phase is the target product biodiesel, and the lower layer is the by-product glycerol and catalyst mixture. The lower layer liquid was put into the catalyst recovery tank and placed at 2°C for 6 hours, the catalyst dissolved in the glycerol was precipitated, and the catalyst was separated from the glycerol by centrifugation. The recovered catalyst was washed with a small amount of ethanol to remove a small amount of glycerol remaining on the surface. Properly replenishing the lost catalyst, the oil conversion rate can be maintained a...

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 discloses a method for synthesizing biodiesel by using potassium phthalimide to catalyze a reaction between vegetable fat and methanol. And the solid potassium phthalimide catalyst can be recycled. The process has the characteristics of low transesterification reaction temperature, short time, simple production process, light glycerol color, few byproducts, no three-waste pollution and the like. In addition, the potassium phthalimide is dissolved in methanol, so that homogeneous reaction during transesterification is realized. Along with the esterification process, the catalyst is dissolved into a glycerol phase and is easily separated from a reaction system by virtue of density difference. And placing the glycerol phase material in an environment of 0-5 DEG C for 10 hours, so that the potassium phthalimide can be separated out from the glycerol phase. After centrifugal separation, regeneration of the solid catalyst can be completed by washing with a small amount of ethanol, so that heterogeneous separation of reaction materials and catalyst recovery are realized.

Description

technical field [0001] The invention relates to a green process and a catalyst for synthesizing biodiesel by reacting grease and methanol, using potassium phthalimide as a catalyst to promote the transesterification reaction process of grease and methanol, and belongs to the technical field of chemical industry. Background technique [0002] Biodiesel, a mixture of long-chain fatty acid mthyl esters (FAME), is a green and renewable energy source that is considered a promising alternative to fossil diesel. For every 1kg of petrochemical diesel replaced by biodiesel, 1.9kg of carbon dioxide equivalent emissions can be reduced. Biodiesel is cleaner than petrodiesel. Adding 20% ​​biodiesel to petrochemical diesel can reduce carbon dioxide emissions by 50%, sulfur dioxide by 70%, and reduce air toxicity by 90%. [0003] Transesterification is the most common method for preparing biodiesel, and there have been many reports, most of which use basic catalysts. Currently, there ar...

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): C11C3/10C10L1/02B01J31/02
CPCC11C3/10C10L1/02B01J31/0247Y02E50/10
Inventor 冯树波韩桂强任振立杨帅
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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