Rapeseed pre-pressing technology

A process and technology of rapeseed, which is applied in the field of rapeseed oil pre-pressing technology, can solve problems such as the adverse effects of crude oil and cake quality, the impact of crude oil and cake quality, and the easy oxidation of oil plants, so as to reduce energy consumption and The effects of equipment investment, increasing protein content, and improving oil yield

Inactive Publication Date: 2014-03-05
YOUYANG COUNTY KANGYOU GRAIN OIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: first, the residual oil content of the pre-pressed cake is too high, generally 18-20%; second, the oil is subjected to high temperature for a long time during the steaming and frying process,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The rapeseed oil pre-pressing process comprises the following steps:

[0021] (1) Clean the rapeseed and dry it until the water content is 2%;

[0022] (2) The rapeseed is crushed by ultrasonic waves, and the rapeseed is crushed while stirring in the crushing process, so that the rapeseed is crushed evenly;

[0023] (3) Send the crushed rapeseed into the extruder for expansion, and adjust the moisture before the expansion of the rapeseed to ensure the puffing effect. The water content of the rapeseed entering the extruder is 10%, and the water content of the rapeseed exiting the extruder is 12%. , the heating steam pressure is 0.6MPa, and the discharge temperature is 100°C;

[0024] (4) Cooling and drying the puffed rapeseed raw material so that the temperature reaches 40°C and the water content is 4%;

[0025] (5) Add an appropriate proportion of fresh, impurity-free, ash-free rice bran to the rapeseed raw material after step (4), add 5 kg of rice bran for every 100 ...

Embodiment 2

[0029] The rapeseed oil pre-pressing process comprises the following steps:

[0030] (1) Clean the rapeseed and dry it until the water content is 5%;

[0031] (2) The rapeseed is crushed by ultrasonic waves, and the rapeseed is crushed while stirring in the crushing process, so that the rapeseed is crushed evenly;

[0032] (3) Send the crushed rapeseed into the extruder for expansion, and adjust the moisture before the expansion of the rapeseed to ensure the puffing effect. The water content of the rapeseed entering the extruder is 12%, and the water content of the rapeseed leaving the extruder is 14%. , the heating steam pressure is 0.5MPa, and the discharge temperature is 105°C;

[0033] (4) Cooling and drying the puffed rapeseed raw material so that the temperature reaches 50°C and the water content is 5%;

[0034] (5) Add an appropriate proportion of fresh, impurity-free, ash-free rice bran to the rapeseed raw material after step (4), add 6 kg of rice bran per 100 kg of ...

Embodiment 3

[0038] The rapeseed oil pre-pressing process comprises the following steps:

[0039] (1) Clean the rapeseed and dry it until the water content is 8%;

[0040] (2) The rapeseed is crushed by ultrasonic waves, and the rapeseed is crushed while stirring in the crushing process, so that the rapeseed is crushed evenly;

[0041] (3) Send the crushed rapeseed into the extruder for expansion, and adjust the moisture before the expansion of the rapeseed to ensure the puffing effect. The moisture content of the rapeseed entering the extruder is 9%, and the moisture content of the rapeseed exiting the extruder is 11%. , the heating steam pressure is 0.7MPa, and the discharge temperature is 90°C;

[0042] (4) Cooling and drying the puffed rapeseed raw material so that the temperature reaches 60°C and the water content is 6%;

[0043] (5) Add an appropriate proportion of fresh, impurity-free, ash-free rice bran to the rapeseed raw material after step (4), add 7 kg of rice bran per 100 kg...

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PUM

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Abstract

The invention discloses a rapeseed pre-pressing technology comprising processes of removing impurities and cleaning rapeseed, implementing vacuum breaking on the rapeseed, extruding and swelling, adding bran, carrying out low-temperature pre-pressing and extracting pre-pressed cakes under a nitrogen environment, and the like, thus finally obtaining pre-pressed crude oil, extracted crude oil and rapeseed dregs. The technology can be used for improving oil output and reducing oil content in the pre-pressed cakes, and avoid shortcomings that the quality of the crude oil and the cake dregs is influenced by high temperature; in addition, after the technology is adopted, energy consumption and equipment investment are reduced, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of rapeseed oil production, in particular to a process for pre-pressing rapeseed oil. Background technique [0002] The existing rapeseed oil extraction process is to pre-press the rapeseed at a temperature of 100-125°C after cleaning, rolling, steaming and frying, and then leaching the pre-pressed cake with a solvent. That is, "rapeseed - cleaning - rolling - steaming - pre-pressing (100-125 ℃) - leaching" process. The disadvantages are: first, the residual oil content of the pre-pressed cake is too high, generally 18-20%; second, the oil is subjected to high temperature for a long time during the steaming and frying process, which will be detrimental to the quality of crude oil and cake The third is that pre-pressing is carried out at high temperature, the oil is prone to oxidation, and the quality of crude oil and cake will be affected. Contents of the invention [0003] In view of this, the purpose of the pres...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/06C11B1/10
Inventor 王康
Owner YOUYANG COUNTY KANGYOU GRAIN OIL
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