A kind of production process of extracting neutral oil from soapstock

A production process, neutral oil technology, applied in the recovery of fat oil/fatty acid from waste, production of fat, recovery of fatty substances, etc. problems such as poor oil extraction, to achieve efficient utilization of clean production, improve oil refining yield, and mild conditions

Active Publication Date: 2022-03-18
SHANDONG SANXING CORN IND SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the extraction of neutral oil in soapstock is relatively poor. This is due to the high viscosity of soapstock itself, fatty acid sodium, colloid, and part of phospholipids in soapstock tightly wrap neutral oil and part of water, resulting in The difficulty of extracting neutral oil is increasing, which is a difficult problem in the industry, which affects the treatment of soapstock and the extraction rate of vegetable oil

Method used

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  • A kind of production process of extracting neutral oil from soapstock
  • A kind of production process of extracting neutral oil from soapstock

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 corn germ soapstock carries out neutral oil extraction 1

[0024] A production process for extracting neutral oil from soapstock, the process is as follows:

[0025] (1) Dilute the soapstock, the weight-to-volume (g / ml) ratio of soapstock to water is 100:75; control the stirring speed to 70 rpm, add water to dilute the soapstock, and form a diluted, neutral oil Evenly distributed soap stock;

[0026] (2) primary demulsification: add sodium chloride in the soapstock liquid, the particle diameter of sodium chloride is between 30-50 μ m, the weight (g / g) ratio of sodium chloride and soapstock is 8:100, then Stir under the condition of 60 rpm / min, while heating the soapstock liquid, heat it up to 65°C at a heating rate of 8°C / min, keep it warm for 5min, and obtain the broken emulsion I;

[0027] (3) Secondary demulsification: Control the temperature of demulsification I to 70°C, then add filter aid, the mass (g / g) ratio of filter aid to soapstock is 0.6:1000,...

Embodiment 2

[0029] Embodiment 2 corn germ soapstock carries out neutral oil extraction 2

[0030] A production process for extracting neutral oil from soapstock, the process is as follows:

[0031] (1) Dilute the soapstock, the weight-to-volume (g / ml) ratio of soapstock to water is 100:70; control the stirring speed to 50 rpm, and dilute the soapstock with water to form a diluted, neutral oil Evenly distributed soap stock;

[0032] (2) One-time demulsification: Add sodium sulfate to the soapstock liquid, the particle size of sodium sulfate is between 30-50 μm, the weight (g / g) ratio of sodium sulfate and soapstock is 5:100, and then turn at 30 Stir under the condition of 1 / min, heat the soapstock liquid at the same time, heat up to 50°C at a heating rate of 8°C / min, keep it warm for 7min, and obtain the broken emulsion Ⅰ;

[0033] (3) Secondary demulsification: Control the temperature of demulsification I to 50°C, then add filter aid, the mass (g / g) ratio of filter aid to soapstock is 0...

Embodiment 3

[0035] Embodiment 3 corn germ soapstock carries out neutral oil extraction 3

[0036] A production process for extracting neutral oil from soapstock, the difference from Example 1 is that in the primary demulsification process of step (2), the weight (g / g) ratio of salt to soapstock is 6:100.

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Abstract

The invention provides a production process for extracting neutral oil from soapstock, comprising a primary demulsification process and a secondary demulsification process; in the primary demulsification process, sodium salt is added, and the temperature of the soapstock liquid is controlled at 50- 70°C, the holding time is between 3-7min, and the demulsification I is obtained; in the second demulsification process, filter aid is added, and the temperature of the demulsification I is controlled at 80-110°C, and the holding time is 2-2 Within 10 minutes, the broken emulsion II was obtained. In the production process, the stirring speed and temperature are strictly controlled, and the performance of the filter aid is fully exerted, so that the extraction rate of the neutral oil from the beginning of the production process reaches more than 78%, and the time is within 40 minutes. The production process has the advantages of easy process control, high extraction rate of neutral oil and short production process time; there is no waste water and waste gas discharge in the production process, which realizes clean production and efficient utilization of resources.

Description

technical field [0001] The invention relates to the technical field of neutral oil extraction, in particular to a production process for extracting neutral oil from soapstock. Background technique [0002] Vegetable oil is the oil obtained from the fruits, seeds, and germs of plants, such as peanut oil, soybean oil, corn germ oil, sunflower oil, etc. During the alkali refining and extraction of vegetable oil, soapstock is produced as a by-product. [0003] Soapstock is a viscous substance, neither liquid nor solid. It cannot be treated as a conventional liquid or solid, and it is difficult to handle. At present, the main use of soapstock is to produce acidified oil. The most traditional method is to add concentrated sulfuric acid to make acidified oil and use it as biodiesel. In this process, 1 ton of soapstock produces about 0.5 tons of acid water. According to the statistics of the National Bureau of Statistics, the annual production of corn oil in the country is 1.2 mill...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B13/02
CPCC11B13/02Y02W30/74
Inventor 王月华程芳园成良玉李桂芝韩娜宋秋月
Owner SHANDONG SANXING CORN IND SCI CO LTD
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