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Process for treating vegetable oil sludge by extraction and compression method

A vegetable oil and process technology, applied in the direction of oil/fat refining, fat production, etc., can solve the problems of inability to recover high value-added oil products, high extraction agent costs, and high processing costs, and achieve large-scale continuous industrial production. The effect of the distillation time is too long or too short and meets the requirements of environmental protection

Pending Publication Date: 2021-05-11
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: long process, complex process, high cost of extraction agent, and at the same time, there is still a large amount of sewage and waste residue discharged in the process, and the treatment cost is high
However, at the same time, biological treatment of oily sludge has disadvantages such as long reaction period, high environmental impact, high treatment cost, inability to recover high value-added oil products, potential risks to the atmosphere and groundwater, difficulty in microbial breeding and easy poisoning, etc.
The oily sludge solidification method utilizes the cohesiveness of silicate to solidify the oily sludge sand into blocks, which will be temporarily closed by you in a specific space. The process of this method is simple and easy, but this method is only suitable for oily, Oily sludge with low water content. At the same time, this method cannot recover oil products, and there is a large environmental risk

Method used

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  • Process for treating vegetable oil sludge by extraction and compression method
  • Process for treating vegetable oil sludge by extraction and compression method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of process of extracting and pressing method processing vegetable oil sludge, such as figure 1 with figure 2 shown, including the following steps:

[0034] S1. Extraction: Pour the vegetable sludge into the extraction tank, and add the extractant to the extraction tank (the mass percentage of the extractant and the vegetable sludge is 1:10), and then the mixture of the vegetable sludge and the extractant enters the circulating pump Dispersion, control the temperature in the circulating pump by means of water bath heating and keep it at 25°C and the impeller speed of the circulating pump is 1000 rpm; first start the circulating pump and run forward for 10 minutes to realize the dispersion of the material in the circulating pump, then stop 5 minutes is to prevent the heat generated during the stirring process from causing the temperature inside the circulation pump to rise, thus causing the oil in the vegetable sludge to oxidize and deteriorate under high tempera...

Embodiment 2

[0038] A kind of process of extracting and pressing method processing vegetable oil sludge, such as figure 1 with figure 2 shown, including the following steps:

[0039] S1. Extraction: Pour the vegetable sludge into the extraction tank, and add the extractant to the extraction tank (the mass percentage of the extractant and the vegetable sludge is 1:10), and then the mixture of the vegetable sludge and the extractant enters the circulating pump Dispersion, the temperature in the circulation pump is controlled by water bath heating to keep at 30°C and the impeller speed of the circulation pump is 1500 rpm; first start the circulation pump and run forward for 10 minutes to realize the dispersion of the material in the circulation pump, then stop 5 minutes is to prevent the heat generated during the stirring process from causing the temperature inside the circulation pump to rise, thus causing the oil in the vegetable sludge to oxidize and deteriorate under high temperature co...

Embodiment 3

[0043] A kind of process of extracting and pressing method processing vegetable oil sludge, such as figure 1 with figure 2 shown, including the following steps:

[0044] S1. Extraction: Pour the vegetable sludge into the extraction tank, and add the extractant to the extraction tank (the mass percentage of the extractant and the vegetable sludge is 1:10), and then the mixture of the vegetable sludge and the extractant enters the circulating pump Dispersion, control the temperature in the circulation pump by means of water bath heating and keep it at 35°C and the impeller speed of the circulation pump is 2000 rpm; first start the circulation pump and run forward for 10 minutes to realize the dispersion of the material in the circulation pump, then stop 5 minutes is to prevent the heat generated during the stirring process from causing the temperature inside the circulation pump to rise, thus causing the oil in the vegetable sludge to oxidize and deteriorate under high tempera...

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Abstract

The invention discloses a process for treating vegetable oil sludge by an extraction and compression method, and relates to the technical field of grease, the technical scheme is that the process for treating the vegetable oil sludge by the extraction and compression method comprises the following steps: S1, extraction; S2, separating; and S3, fractionation. The treatment process provided by the invention has the advantages of high oil recovery rate, low operation cost, energy conservation and environmental protection.

Description

technical field [0001] The invention relates to the field of oil treatment, more specifically, it relates to a process for treating vegetable oil sludge by extracting and pressing. Background technique [0002] Vegetable oil is a necessity in people's daily food. In 2018 / 2019, China's edible vegetable oil output reached 30 million tons. As the fifth largest edible oil in my country, the output of cottonseed oil reached 1.65 million tons in 2019. With the increase of cotton production capacity and market demand for cotton oil, cotton oil processing enterprises produce a considerable amount of leftover cottonseed oil sludge in the process of cotton oil refining. Therefore, the full development and utilization of cottonseed oil sludge has become the focus of research. In the process of producing sanitary oil from cottonseed crude oil through alkali refining, sludge with 20% of crude oil can be produced, and the annual output can reach 330,000 tons of sludge. This sludge contai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00C11B3/12
CPCC11B3/001C11B3/006C11B3/12
Inventor 宗殿瑞
Owner QINGDAO UNIV OF SCI & TECH
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