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Method for carrying out alkali adding treatment, alkali refining and refining on crude oil through supergravity technology

An alkali treatment and super-gravity technology, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of long semi-continuous treatment time, low production efficiency, large floor space, etc., and achieve flexible environmental adaptability and easy maintenance , easy operation effect

Pending Publication Date: 2021-09-21
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the existing edible vegetable hair oil deacidification equipment has disadvantages such as large area, heavy weight, high energy consumption, and long semi-continuous processing time, resulting in low production efficiency and poor economic benefits

Method used

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  • Method for carrying out alkali adding treatment, alkali refining and refining on crude oil through supergravity technology
  • Method for carrying out alkali adding treatment, alkali refining and refining on crude oil through supergravity technology
  • Method for carrying out alkali adding treatment, alkali refining and refining on crude oil through supergravity technology

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The present embodiment adopts the following steps to carry out:

[0044] Step 1: Acidification

[0045] Take by weighing 200g crude oil, calculate the quality that adds phosphoric acid by following formula:

[0046]

[0047] Wherein M is the crude oil weight (kg), P is the non-hydratable phospholipid content (ppm), x is the excess acid (%), and C is the phosphoric acid concentration (%).

[0048] After adding acid at 75°C, stir at 1000 rpm for 40 min to complete the acidification step. At the same time, it is used as the initial condition for corresponding optimization.

[0049] Step 2: Alkali treatment

[0050] Calculate the mass of NaOH solution added according to the following formula:

[0051]

[0052] Wherein M is the weight of crude oil (kg), A is the acid value of crude oil (mg KOH / g), y is excess alkali (%), and C is NaOH concentration (%).

[0053] The alkali-adding treatment step of each embodiment is carried out in the mode of continuous feeding an...

Embodiment 2—15

[0060] Test procedure is identical with embodiment 1, and concrete process parameter and test result see table 1 below, and the parameter not listed in the table is all identical with embodiment 1, and the letter meaning and unit listed in table header are exactly the same as in embodiment 1:

[0061] Table 1

[0062]

Embodiment 16

[0063] Embodiment 16: Omit the impact of washing step on final product

[0064] Keep other conditions unchanged (62g of supergravity level, 6 Baume degrees of alkali concentration, 20% of excess acid, 10% of excess alkali, and 75°C of alkali refining temperature), the acid value 2.60mg KOH / g, the crude soybean oil of phosphorus content 430ppm carries out acidification step. The parameters of the final product obtained are shown in Table 2.

[0065] Table 2

[0066] Acid value mg KOH / g Phosphorus contentppm Experimental group 1 0.07 6.21 Experimental group 2 0.05 5.82 Experimental group 3 0.05 6.33

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Abstract

The invention provides a method for carrying out alkali adding treatment, alkali refining and refining on edible plant crude oil through a supergravity technology. The method can realize rapid and full contact between the crude oil and alkali liquor, enables free acid in the crude oil to be rapidly neutralized, avoids oil product loss and nutrient substance loss caused by contact between the oil product and the alkali liquor in the prior art, can realize continuous production, and has the advantages of high production efficiency, small occupied area and low energy consumption. The method is suitable for various alkali liquor concentrations, various crude oils and various working conditions, part of process steps can be simplified according to actual conditions, and the method has bright industrial application prospects.

Description

technical field [0001] The invention relates to a method for alkali treatment, alkali refining and refining of edible vegetable crude oil by means of supergravity technology. Background technique [0002] In the field of edible vegetable crude oil production, oil refining generally refers to the process of removing impurities in crude oil (primary oil after extraction) that are harmful to consumption, storage, and production. Deacidification is one of the important links in the oil refining process, and its main purpose is to use acid-base chemical reaction to neutralize free fatty acids in crude oil. Deacidification methods include alkali refining, distillation, solvent extraction and esterification and other methods. The most widely used in industrial production are alkali refining and steam distillation (that is, physical refining). [0003] Alkali refining deacidification method is a refining method that neutralizes free fatty acids in oil with alkali. Alkalis used to...

Claims

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Application Information

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IPC IPC(8): C11B3/06C11B3/00
CPCC11B3/06C11B3/001
Inventor 孙东哲张亮亮王满意初广文酉琳娜陈建峰王翔宇
Owner BEIJING UNIV OF CHEM TECH
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