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A high-efficiency refining process for ultra-high acid value crude oil

A technology of ultra-high acid and crude oil, applied in the direction of oil/fat refining, fat production, etc., can solve the problems of serious loss, large nutrient loss, large loss of oil micronutrient components, etc., and achieve the improvement of intermediate product quality and micronutrient components. Improve, enhance the effect of micronutrients

Active Publication Date: 2020-12-08
RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the existing method, due to the serious emulsification of high acid value oil in the degumming and washing process, the degumming effect is poor and the loss is serious; because the acid value of the degummed oil is too high, the clay is easily poisoned during the decolorization process, and the clay is consumed too much Large, the loss of micronutrients in the oil is too large, and the decolorization effect is not good; because the degumming and decolorization effect is not good, and the acid value of the decolorized oil is too high, the deodorization process takes too long, the nutrient loss is huge, and the decolorization of the deodorized oil is serious. Not only the quality of refined oil is not good, but also the processing cost remains high; due to serious color reversion, secondary refining is frequent, which not only further reduces economic benefits, but also makes it impossible to effectively improve product quality

Method used

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  • A high-efficiency refining process for ultra-high acid value crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Heat the ultra-high acid value crude oil to 50°C, add 75% phosphoric acid according to the amount of 4kg per ton of crude oil, after rapid stirring, continue to stir and react for 40min; according to the theoretical amount of alkali added, add 24 % NaOH solution, stirring continuously for 20min; then, adding 10% NaCl solution according to 10% of the mass of crude oil, stirring continuously for 10min, heating to 75°C, and de-soaping (stationary precipitation or centrifugation); after de-soaping, according to Add 50% citric acid solution to 0.05% of the mass of the crude oil, stir continuously for 30 minutes, add 15% of the mass of the crude oil to 80°C hot water for washing; mix the oil and water evenly, separate the oil from the water, dry in vacuum, and The temperature is 10mmHg; the dry oil is heated to 103°C, vacuum decolorized for 25min, and then deodorized at a low temperature at 225°C; add 50% citric acid solution to the cooled deodorized oil according t...

Embodiment 2

[0023] Example 2: Heat the ultra-high acid value crude oil to 50°C, add 85% phosphoric acid according to the amount of 3kg per ton of crude oil, and after rapid stirring, continue to stir and react for 50min; according to the theoretical amount of alkali added, add 22 %% NaOH solution, stirring continuously for 30min; then, adding 10% NaCl solution according to 10% of the crude oil mass, stirring continuously for 10min, heating to 79°C, and de-soaping (stationary precipitation or centrifugation); after de-soaping, Add 50% citric acid solution according to 0.05% of the mass of the crude oil, and after continuous stirring for 30 minutes, add 12% of the mass of the crude oil into hot water at 85°C for washing; after the oil and water are mixed evenly, the oil and water are separated, vacuum dried, and desiccator Vacuum degree 15mmHg; after the dry oil is heated to 108°C, vacuum decolorize for 30 minutes, and then deodorize at a low temperature at 230°C; add 50% citric acid solutio...

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Abstract

The invention discloses an efficient refining technology of ultrahigh-acid value crude oil. The efficient refining technology comprises the following steps: (1) heating the ultrahigh-acid value crude oil, and adding in 75 percent or 85 percent of phosphoric acid; (2) adding in an NaOH solution through a mixer, and continuously stirring; (3) adding in 10 percent of NaCl solution according to 10 percent of the content of the crude oil, heating and desoponificating; (4) adding in 50 percent of citric acid solution according to 0.05 percent of the content of the crude oil after desoponificating, continuously stirring, and adding in hot water according to 12 to 15 percent of the content of the crude oil; (5) carrying gout oil-water separation on oil in which oil and water are mixed uniformly, and carrying out vacuum drying; (6) after heating dried oil, carrying out vacuum decoloring for 25 to 35 minutes, and then carrying out low-temperature deodorization; (7) adding the citric acid solution in cooled deodorized oil, thus obtaining a finished product if passing inspection. The efficient refining technology disclosed by the invention has the beneficial effects that not only can the production efficiency and the refining rate be effectively increased, but also the emulsifying problem during a refining process of the ultrahigh-acid value crude oil can be effectively solved.

Description

technical field [0001] The invention relates to the field of ultra-high acid value crude oil refining, and mainly relates to a high-efficiency refining process for ultra-high acid value crude oil. Background technique [0002] Ultra-high acid value crude oil refers to crude oil with an acid value greater than 10mm / gKOH, and the acid value is generally 10-30mm / gKOH. The existing high acid value crude oil refining technology adopts: hydration and degumming of high acid value crude oil, followed by water washing, decolorization and deacidification. With the existing method, due to the serious emulsification of high acid value oil in the degumming and washing process, the degumming effect is poor and the loss is serious; because the acid value of the degummed oil is too high, the clay is easily poisoned during the decolorization process, and the clay is consumed too much Large, the loss of micronutrients in the oil is too large, and the decolorization effect is not good; becaus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11B3/00C11B3/06
CPCC11B3/001C11B3/006C11B3/06
Inventor 郭少海杜孟浩方学智罗凡王亚萍费学谦
Owner RES INST OF SUBTROPICAL FORESTRY CHINESE ACAD OF FORESTRY