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Solid alkali and the method of utilizing solid alkali to realize the synergistic deacidification and decolorization of waste oil

A technology of solid alkali and waste oil, which is applied in chemical instruments and methods, fat oil/fat refining, and other chemical processes. It can solve problems such as complex processes, harsh method conditions, and unsatisfactory conditions, so as to save process flow and neutral oil. High yield and good decolorization effect

Active Publication Date: 2018-08-07
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, on the one hand, these processes cannot achieve good deacidification or decolorization effects in the treatment of waste oil; on the other hand, the process is complicated, and secondary pollution waste will be generated
[0004] Some new processing methods of deacidification and decolorization have also occurred in recent years, and as CN104450207 utilizes the glycerin esterification method to reduce the acid value of waste oil, although this method has fully utilized the free acid in the waste oil to make it effectively converted into ester, and The acid value of the treated oil is reduced to 0.5mgKOH / g, but the method conditions are relatively harsh, and post-treatment processes such as multi-step rectification and separation are required for the product; CN103589517 uses a magnesium silicate material to absorb and decolorize the waste oil , can achieve a certain decolorization effect, combined with the characteristics of magnesium silicate, can reduce the acid value to a certain extent, but the removal effect is not obvious, the acid value of the oil after treatment is still above 3.5mgKOH / g, which cannot be directly used as a follow-up Requirements for deep processing raw materials

Method used

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  • Solid alkali and the method of utilizing solid alkali to realize the synergistic deacidification and decolorization of waste oil
  • Solid alkali and the method of utilizing solid alkali to realize the synergistic deacidification and decolorization of waste oil
  • Solid alkali and the method of utilizing solid alkali to realize the synergistic deacidification and decolorization of waste oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The basic preparation parameters of solid base #1 are: take 60 parts by mass of activated carbon and 40 parts of activated clay, fully grind and mix activated carbon and activated clay, add 500 parts of dilute hydrochloric acid, filter after stirring for 1 hour, rinse with distilled water until Neutral, take it out after drying at 105-110°C for 2 hours, add the obtained mixture of activated carbon and activated clay to the prepared impregnation treatment solution with a concentration of 10% NaOH solution, stir at room temperature for 12 hours, filter to obtain solid alkali, and place it in an oven After drying at 105-110°C for 3 hours, take it out, put it in a desiccator to cool, and set it aside.

[0036] Filter and distill waste oil #1 to remove solid residue and moisture, weigh 100kg of waste oil that has been filtered and distilled, add 15kg of solid alkali #1, stir for 30 minutes at a temperature of 70°C, and filter to separate the solid After alkali and treated oi...

Embodiment 2

[0040] Waste oil #2 is filtered and distilled to remove solid residue and moisture, weigh 100 kg of waste oil processed through filtration and distillation, add 15 kg of solid base #1 (prepared as in Example 1), and heat at a temperature of 70° C. , stirred for 30 minutes, filtered to separate the solid alkali and the treated oil, and washed the treated oil with water for 3 times.

[0041] Table 2 is the comparison table of parameters of waste oil before and after treatment in embodiment 2

[0042]

Embodiment 3

[0044] The basic preparation parameters of solid base #2 are: 65 parts by mass of activated carbon and 35 parts of activated clay. After fully grinding and mixing the activated carbon and activated clay, add 500 parts of dilute hydrochloric acid, filter after stirring for 1 hour, and rinse with distilled water to medium Take it out after drying at 105-110°C for 2 hours, add the obtained mixture of activated carbon and activated clay to the prepared impregnating treatment solution with a concentration of 20% NaOH solution, stir at room temperature for 12 hours, filter, and place the solid base at 105-110 After drying at ℃ for 3 hours, take it out, put it in a desiccator to cool, and set it aside.

[0045] Filter and distill waste oil #2 to remove solid residue and water, weigh 100kg of waste oil that has been filtered and distilled, add 10kg of solid alkali #2, stir for 20min at a temperature of 80°C, and filter to separate the solid After alkali and treated oil, the treated oi...

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Abstract

The invention relates to the field of oil refining and processing, in particular to a solid alkali and a method for realizing synergistic deacidification and decolorization of waste oil by using the solid alkali. The waste oil is mainly used as the treatment object, and the compound solid alkali is used for deacidification and decolorization treatment. The composite solid alkali is composed of activated carbon and activated clay. On the one hand, due to the adsorption characteristics of the preparation of solid alkali, by changing the ratio of solid alkali raw materials and the concentration of the impregnation treatment solution, it can be widely used in the decolorization of waste oil from different sources and types. On the other hand, , By controlling the treatment temperature, time, and the amount of solid alkali used, the deacidification and decolorization efficiency of waste oil can be changed, and the optimal deacidification and decolorization effect of waste oil can be achieved. Utilizing the synergistic effect between the compound loaded alkalis, not only the simultaneous deacidification and decolorization of waste oil is realized, but also the process has the characteristics of high deacidification and decolorization efficiency and high yield of neutral oil. The processed products can be used as raw materials for subsequent deep processing.

Description

technical field [0001] The invention relates to the field of oil refining and processing, in particular to a solid alkali and a method for realizing synergistic deacidification and decolorization of waste oil by using the solid alkali. Background technique [0002] With the improvement of people's living standards, more and more fats and oils are discarded in daily life and food processing enterprises. It mainly comes from slick oil discharged from processed food and tableware in the catering industry, waste oil from fried food, animal and vegetable oil leftovers, acidified oil, etc., commonly known as gutter oil, swill oil or swill oil. At present, although the output of waste oil in my country is huge, it has not been fully and rationally recycled and utilized. If these waste oils are directly discharged into the sewer, it will not only block and corrode the pipes, but also pollute 15,000 square meters of water per kilogram of waste oil, which may lead to eutrophication o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/00C11B3/10C11B3/00C11B3/16C11B3/12
Inventor 陈爽刘会娥关宇钟强
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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