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Method for extracting raw oil from starchy material

A starchy raw material and crude oil technology, applied in the production of sugar, fat oil/fat production, glucose production, etc., can solve the problems of affecting production efficiency, low extraction rate of crude oil, low utilization rate of starch, etc., and achieve the settling separation time Effects of shortening, improving crude oil yield, and improving production efficiency

Inactive Publication Date: 2012-01-04
COFCO BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the filter residue exists in the liquefied liquid after flash evaporation, lipophilic substances exist in the filter residue, the extraction rate of crude oil is low, the separation of crude oil and sugar solution is not complete, and the subsequent sedimentation and separation steps take a long time, and the subsequent process is still Filtration is required, which affects production efficiency; at the same time, with one injection, the enzymatic hydrolysis of corn is not complete, the utilization rate of starch is low, the separation of corn starch and fat is not sufficient, and the release rate of crude oil is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 100 parts by weight of corn were pulverized to obtain a pulverized product with an average particle diameter of 400 microns, and the pulverized product was mixed with 300 parts by weight of water to obtain a starch slurry.

[0042] At 50°C, the starch slurry was mixed with α-amylase in an amount of 10 enzyme activity units / g corn flour to obtain a mixture, and the mixture was sprayed into contact with steam at 160°C in an injector (the weight ratio of steam to mixture 0.04:1), the contact time is 2 seconds, so that the temperature of the mixture after contacting with steam is 80°C, and the laminar flow is maintained at this temperature for 120 minutes;

[0043] The above-mentioned mixture after being contacted with steam is again sprayed and contacted with steam at 160° C. in the injector (the weight ratio of steam to mixture is 0.06: 1), and the contact time is 3 seconds, so that the mixture after being contacted with steam again The temperature is 120°C and kept at th...

Embodiment 2

[0049] 100 parts by weight of corn were pulverized to obtain a pulverized product with an average particle diameter of 400 microns, and the pulverized product was mixed with 300 parts by weight of water to obtain a starch slurry.

[0050] At 60°C, the starch slurry was mixed with α-amylase in an amount of 15 enzyme activity units / g corn flour to obtain a mixture, and the mixture was sprayed into contact with steam at 160°C in an injector (the weight ratio of steam to mixture 0.05:1), the contact time is 2 seconds, so that the temperature of the mixture after contacting with steam is 100°C, and the laminar flow is maintained at this temperature for 180 minutes;

[0051] The above-mentioned mixture after being contacted with steam is again sprayed and contacted with steam at 160° C. in the injector (the weight ratio of steam to mixture is 0.06: 1), and the contact time is 3 seconds, so that the mixture after being contacted with steam again The temperature is 150°C and kept at t...

Embodiment 3

[0065] 100 parts by weight of corn were pulverized to obtain a pulverized product with an average particle diameter of 400 microns, and the pulverized product was mixed with 300 parts by weight of water to obtain a starch slurry.

[0066] At 55°C, the starch slurry was mixed with α-amylase in an amount of 20 enzyme activity units / g corn flour to obtain a mixture, and the mixture was sprayed into contact with steam at 160°C in an injector (the weight ratio of steam to mixture 0.05:1), the contact time is 2 seconds, so that the temperature of the mixture after contacting with steam is 90°C, and the laminar flow is maintained at this temperature for 150 minutes;

[0067] The above-mentioned mixture after being contacted with steam is again sprayed and contacted with steam at 160° C. in the injector (the weight ratio of steam to mixture is 0.05: 1), and the contact time is 3 seconds, so that the mixture after being contacted with steam again The temperature is 130°C and kept at th...

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PUM

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Abstract

The invention relates to a method for extracting raw oil from a starchy material, which comprises the following steps: (1) mixing starchy material powder with water to obtain a starch slurry, and jetting and liquefying the starch slurry in the presence of amylase to obtain a liquefied liquid; (2) carrying out flash evaporation on the liquefied liquid obtained in the step (1); (3) carrying out pressure filtration on the liquefied liquid subjected to flash evaporation in the step (2) to obtain a liquefied clear liquid; and (4) carrying out settlement separation on the liquefied clear liquid in the step (3) to separate raw oil and sugar solution. The yield of the raw oil is high.

Description

technical field [0001] The invention relates to a method for extracting crude oil from starchy raw materials. Background technique [0002] At present, my country uses starchy raw materials to ferment citric acid, alcohol, etc., all of which involve the problem of crude oil in starchy raw materials. If the starchy raw material crude oil is not extracted, it will not only affect the fermentation effect and cause waste of resources, but also affect the product quality. [0003] At present, some domestic processes for extracting crude oil from starchy raw materials are dry degerming; some are producing liquefied liquid, and then extracting crude oil from the liquefied liquid. The dry degerming method has a large investment and high cost, and the yield of crude oil extracted from the germ is low; when the crude oil is extracted in the liquefied liquid, the release of the crude oil is insufficient. many. [0004] CN101993900A discloses a citric acid raw material pretreatment p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/00C13K1/06C13K7/00C13K13/00
Inventor 张军华周勇朱继成卢宗梅章辉平
Owner COFCO BIOTECHNOLOGY CO LTD