A preparation process for producing biodiesel from refined oil

A preparation process, biodiesel technology, applied in the petroleum industry, biofuel, fatty acid esterification, etc., can solve the problems of weak adaptability and compatibility of raw materials, unstable product quality, unstable process, etc. The effect of wasting raw materials and stabilizing the process

Active Publication Date: 2016-02-03
SHAANXI DERONG NEW ENERGY
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Existing biodiesel production is mainly based on gutter oil and acidified oil, which often have unstable processes, weak adaptability and compatibility of raw materials, unstable product quality, and high energy consumption.

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
  • A preparation process for producing biodiesel from refined oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] Dissolve the oil in methanol with an oil mass percentage of 30% at a temperature of 50°C to 55°C, add 6.3% to 6.5% flake sodium hydroxide into the oil at a mass percentage of 55°C to 60°C, and stir with high-shear self-circulation for normal pressure esterification The exchange reaction takes 60 to 90 minutes. The transesterification reaction does not exceed the boiling point of methanol, and there are condensation and reflux measures to prevent the loss of methanol from changing the concentration of the material and aggravating side reactions. Afterwards, add 15% oil mass and soft water with a temperature of 45° C. to 55° C. (which can be recovered in the subsequent process) and stir for 5 minutes, and leave to stand for 60 minutes to fully separate layers and separate liquids. The crude methyl ester in the upper layer and the crude glycerol in the lower layer are dealcoholized by flashing, and the released methanol enters the methanol rectification tower for regenerat...

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 preparation technology of biodiesel produced from refined grease. The preparation technology comprises the following steps: 1) selecting and using qualified raw grease, methanol and a catalyst; 2) dissolving the catalyst in the methanol in an appropriate proportion; 3) performing an ester interchange reaction of a prepared catalyst methanol solution and the grease under appropriate conditions; 4) performing first-time water washing and liquid separation to remove the catalyst and glycerin which is produced by the ester interchange, and rectifying and recycling the superfluous methanol; 5) performing secondary water washing and dehydration to produce a non-standard product A; 6) obtaining a non-standard product B and tower-bottom heavy oil through vacuum distillation of the non-standard product A; and 7) obtaining a biodiesel product in strict conformance with national standard GB / T 20828-2007 by deep deacidification, water washing and dehydration of the non-standard product B. The preparation technology has stable technological processes, and can fully realize recycling of the excess methanol, reuse of soft water and saving of energy and resources. The by-product crude glycerin has extremely few impurities and good quality, and can be excellently applied to a production line of the biodiesel produced from non refined grease, and no raw material may be wasted.

Description

technical field [0001] The invention relates to a biodiesel process, in particular to a method for producing national standard biodiesel by using refined oil, that is, a method for producing national standard biodiesel by using refined oil as raw material through transesterification and deep deacidification. Background technique [0002] Biodiesel is a fatty acid monoalkyl ester obtained by transesterification of animal and vegetable oils and alcohols (such as methanol or ethanol), the most typical one is fatty acid methyl ester, expressed as BD100, and the national standard GB / T20828-2007 is implemented. Biodiesel blended fuel (B5) implements the national standard GB / T25199-2010. Biodiesel is an excellent supplement and substitute for petrochemical diesel. [0003] During the development of biodiesel, there were production methods such as direct mixing method, microemulsion method, pyrolysis method and transesterification method. The direct mixing and microemulsification ...

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 Patents(China)
IPC IPC(8): C11C3/10C10L1/02
CPCY02E50/10
Inventor 姚东阳陈涛高静
Owner SHAANXI DERONG NEW ENERGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap