Method for extracting conversion biodiesel from oil pressing cake

A technology of biodiesel and press cake, which is applied in the processing of oil press cake, biodiesel and degreased meal, can solve the problems of adverse effects on human health, energy loss, increased consumption, etc., to improve comprehensive utilization value, reduce investment, reduce The effect of intermediate processing

Inactive Publication Date: 2008-04-16
INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since solvent extraction is used in the leaching process, on the one hand, it is inevitable that there will be residual solvent in the oil. Even the refined first-grade oil usually contains about 3mg/kg of solvent residue (the national standard is regarded as undetected). The latest research by the US FDA shows that No. 6 solvent residue Eating will cause adverse effects on human health; on the other hand, the mixed oil obtained by leaching needs to go through steps such as steam stripping and

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 extracting conversion biodiesel from oil pressing cake

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The rapeseed containing 0.23% of impurities by weight is put into the rolling machine after the plane rotary sieve, de-stoner, magnetic separator and winnowing, and the granular oil is rolled into a thin green sheet with a thickness of 0.3 mm. A vertical steamer is used to steam and fry the flakes. After steaming and frying, the weight ratio of the water content is 5%, and the temperature of the blank is 110°C. The cooked embryos after steaming and frying are directly entered into the ZY24 pre-pressing machine for pressing. After pressing, the residual oil ratio of the rapeseed cake is 12.5% ​​by weight. The pressed cake enters the extractor and uses n-hexane as a solvent to extract oil. The extraction temperature is 55°C. The leaching time is 120 minutes, the charging height of the grid is 1.1 meters, and the solvent spraying volume is 1.2m 3 / h. The wet meal obtained by leaching enters the DT steamer for desolventization. The direct steam pressure of the DT steamer i...

Embodiment 2

[0028] Dry the rapeseed containing 0.3% impurities by weight after passing through the plane rotary sieve, de-stoner, magnetic separator and winnowing, the water content after drying is 9% by weight, and the dried rapeseed is used YTTP-75 type dehulling and separation system performs dehulling and kernel-hull separation to obtain rapeseed kernels. The skin content in the kernels is 1.93% by weight, and the SSYZ 12 / 12 low-temperature screw oil press is used to feed at room temperature and squeeze to obtain The low-temperature press cake with a residual oil rate of 14.8% by weight, the press cake enters the extruder for expansion, and the expanded material enters the leaching device for leaching with isopropanol, the leaching temperature is 78 ° C, the time is 120 minutes, and the charging height of the material grid is 1.0 m, solvent spray volume is 1.5m 3 / h. The wet meal obtained by leaching is subjected to DT steaming and off-line for desolventization, and the residual oil ...

Embodiment 3

[0033] Dry the rapeseeds containing 0.26% impurities by weight after passing through the plane rotary sieve, de-stoner, magnetic separator and winnowing. The water content after drying is 8.5% by weight. The dried rapeseeds are used YTTP-75 shelling and separation system is used for shelling and kernel-hull separation to obtain rapeseed kernels. The skin content in the kernels is 1.53% by weight. The SSYZ 12 / 12 low-temperature screw oil press is used to feed at room temperature and press Obtain the low-temperature pressed cake with 15.2% residual oil rate by weight, the pressed cake enters the extruder and expands, and the material after the expansion enters the extractor and is leached with acetone-ethyl acetate mixed solvent, and the weight ratio of acetone and ethyl acetate in the mixed solvent is 7:3, the leaching temperature is 40°C, the time is 120 minutes, the charging height of the material grid is 1.2 meters, and the solvent spraying volume is 1.4m 3 / h. The wet meal...

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 extracting transformation biodiesel from oil-bearing press cake and solves the problems of complex pretreatment and high energy consumption, etc. of the prior art which mainly adopts animal and vegetable oil as raw materials. The invention realizes direct pressing of shelled oilseeds or unshelled oilseeds through a low-temperature screw oil press or a common oil press to obtain press cake and expressed oil; the press cake is leached out through adopting organic solvent with the leaching out solvent ratio ranging between 0.8:1 and 2.0:1 and the leaching out time ranging from 60 min to 200 min; the leached out oil mixtures is converted into 60 percent to 90 percent concentrated oil mixtures after evaporation or cooling and separation, while the leached out wet meal containing solvent is converted into degreased meal with the residual oil rate being less than or equal to 1 percent after exsolution; catalyst which accounts 1 percent to 10 percent of the weight of the concentrated oil mixtures is added in the concentrated oil mixtures for biodiesel transformation with the products separated to obtain biodiesel crude product and glycerol; finally, the biodiesel crude product is made into biodiesel product after distillation. The invention which omits steps such as steam stripping and refining has the characteristics of simple process and low energy consumption, etc.

Description

technical field [0001] The invention relates to a processing method of an oil press cake, in particular to a method for preparing biodiesel and defatted meal by using the oil press cake as a raw material in one step, and belongs to the field of agricultural product processing. Background technique [0002] The seeds of oil crops are pressed to obtain pressed cake and pressed oil. In the current oil processing industry, the pressed cake is usually extracted with No. 6 solvent oil, and the extracted crude oil is refined to obtain different grades of extracted oil to enter the market. my country is a big oil producing and consuming country, and leaching oil occupies a considerable proportion in the consumption of edible oil in my country. Since solvent extraction is used in the leaching process, on the one hand, it is inevitable that there will be residual solvent in the oil. Even the refined first-grade oil usually contains about 3mg / kg of solvent residue (the national standar...

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): C10G3/00C11B13/00
CPCY02E50/13Y02E50/10Y02P30/20Y02W30/74
Inventor 黄凤洪钮琰星李文林黄庆德邓乾春刘昌盛杨湄郭萍梅万楚筠梁华祝俊
Owner INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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