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

A kind of refining method of four-grade rapeseed oil

A technology of rapeseed oil and rapeseed oil, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of large investment, high cost, large oil refining loss, etc., and achieve the effect of increasing environmental pollution and simple and feasible processing methods

Active Publication Date: 2019-02-12
厦门银祥油脂有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the oil refining loss is large, there is a loss of 1.2-1.5%, the investment is large, and the production line of the first-grade oil needs to be built, and the cost is high

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

[0026] Add 0.06% of 40% citric acid to the pre-pressed rapeseed oil with a phosphorus content of 320ppm (non-hydratable phospholipid 130ppm), stir and mix evenly at 65°C to 75°C, and the acidification time is 1.0 hour. Then add 0.13% of 85% phosphoric acid, stir and mix evenly under the condition of 80° C. to 85° C., and the acidification time is 15 minutes. Then add 5% demineralized water at a temperature of 85°C, stir and mix evenly at 85°C, and the hydration time is 15 minutes. The oil is pumped into a self-cleaning centrifuge with a back pressure of 3-3.2 bar and a centripetal pump opening of 90 from the transfer pump to continuously separate and remove lipids such as phospholipids in the rapeseed oil. Add 0.04% hydrogen peroxide with a concentration of 30% to the degummed rapeseed oil obtained after centrifugal degumming, stir and mix evenly at 80°C, and the oxidation decolorization time is 1.5 minutes. The rapeseed oil after oxidative decolorization is pumped into a des...

Embodiment 2

[0028] Add 0.04% of 40% citric acid to leaching rapeseed oil with a phosphorus content of 1200ppm (non-hydratable phospholipid 80ppm), stir and mix evenly at 65°C to 75°C, and the acidification time is 0.5 hour. Then add 0.16% of 85% phosphoric acid, stir and mix evenly under the condition of 80° C. to 85° C., and the acidification time is 20 minutes. Then add 7% demineralized water at a temperature of 85° C., stir and mix evenly under the condition of 80° C. to 85° C., and the hydration time is 20 minutes. The oil is pumped into a self-cleaning centrifuge with a back pressure of 3-3.2 bar and a centripetal pump opening of 90 from the transfer pump to continuously separate and remove lipids such as phospholipids in the rapeseed oil. Add 0.06% hydrogen peroxide with a concentration of 30% to the degummed rapeseed oil obtained after centrifugal degumming, stir and mix evenly at 80° C., and the oxidation decolorization time is 2.0 minutes. The rapeseed oil after oxidative decolo...

Embodiment 3

[0030]Add 0.05% of citric acid with a concentration of 40% to mixed rapeseed oil with a phosphorus content of 540ppm (120ppm non-hydratable phospholipids), stir and mix evenly at 65°C to 75°C, and the acidification time is 1.0 hour. Then add 0.16% of 85% phosphoric acid, stir and mix evenly under the condition of 80° C. to 85° C., and the acidification time is 20 minutes. Then add 7% demineralized water at a temperature of 85° C., stir and mix evenly under the condition of 80° C. to 85° C., and the hydration time is 20 minutes. The hydrated rapeseed oil is pumped into a self-cleaning centrifuge with a back pressure of 3-3.2bar and a centripetal pump opening of 90° by a transfer pump to continuously separate and remove lipids such as phospholipids in the rapeseed oil. Add 0.06% hydrogen peroxide with a concentration of 30% to the degummed rapeseed oil obtained after centrifugal degumming, stir and mix evenly at 80° C., and the oxidation decolorization time is 2.0 minutes. The ...

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 refining method for fourth-grade rapeseed oil. The refining method comprises the following steps: (1) carrying out pre-acidification; (2) carrying out post-acidification; (3) carrying out hydration; (5) carrying out centrifugal degumming; (5) carrying out oxidative decolorization; and (6) carrying out vacuum dehydration and desolvation. According to the method disclosed by the invention, two acids are separately used for two-time acidifying hydrated phospholipid and non-hydrated phospholipid in crude oil, so that the phospholipid content in the fourth-grade rapeseed oil is reduced to meet the qualified requirement of a heating test, and therefore, the problem that four-grade rapeseed oil produced from imported rapeseed oil cannot meet the quality standards in a heating test is solved.

Description

technical field [0001] The invention belongs to the technical field of edible oil refining, and in particular relates to a refining method of four-grade rapeseed oil. Background technique [0002] When imported rapeseeds are processed and refined into grade 4 rapeseed oil, there is a general problem of unqualified heating test in the quality inspection of grade 4 rapeseed oil, which is specifically manifested in the presence of precipitates and the increase in blue value after heating of grade 4 rapeseed oil Exceeded the standard. [0003] There are two main ways to solve this problem in China. One is to increase the bleaching clay decolorization section, use activated clay to absorb chlorophyll and lipids in oil, and reduce the blue value in oil. The fourth-grade oil produced by this method can basically meet the "280°C heating test blue value increase index" qualified, the disadvantage is that the oil has a loss of 0.3-1%, and the oil has a white clay smell, which is not...

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): C11B3/00C11B3/04C11B3/08
Inventor 孙勤薛武军苏永裕杨俊杰路同辉李奇杨耿彬刘畅刘升王帅帅陈琼华
Owner 厦门银祥油脂有限公司
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