阅读说明：本技术 一种判别并去除废油中的动植物油技术 (Technology for distinguishing and removing animal and vegetable oil in waste oil ) 是由 林木茂 丁达明 于 2020-05-18 设计创作，主要内容包括：本发明属于废油净化技术领域,公开了一种判别并去除废油中的动植物油技术。该判别并去除废油中的动植物油技术,所述技术包括如下步骤：(1)动植物油判定：①取50ml废油样品,倒入热碱溶液及水,摇匀以充分反应；②分离①中的混合溶液,取混合溶液的上层油液,所取上层油液容量在45ml以下可判定废油中含有动植物油。该判别并去除废油中的动植物油技术,利用动植物油与矿物油化学性质的差异,抽取样品分析,动植物油与热碱反应溶于水,而矿物油不会,能够判定废油至是否含有动植物油,操作方便,可靠性高。(The invention belongs to the technical field of waste oil purification, and discloses a technology for distinguishing and removing animal and vegetable oil in waste oil. The technology for distinguishing and removing the animal and vegetable oil in the waste oil comprises the following steps: (1) and (3) judging animal and vegetable oil: firstly, 50ml of waste oil sample is taken, hot alkali solution and water are poured into the waste oil sample, and the mixture is shaken up to fully react; and secondly, separating the mixed solution in the first step, taking the upper-layer oil of the mixed solution, and judging that the waste oil contains animal and vegetable oil when the volume of the upper-layer oil is below 45 ml. The technology for distinguishing and removing the animal and vegetable oil in the waste oil utilizes the difference of the chemical properties of the animal and vegetable oil and the mineral oil to extract and analyze samples, the animal and vegetable oil reacts with thermokalite to be dissolved in water, the mineral oil does not react with the thermokalite, the waste oil can be judged whether to contain the animal and vegetable oil, the operation is convenient, and the reliability is high.)

1. A technology for distinguishing and removing animal and vegetable oil in waste oil is characterized in that: the technology comprises the following steps:

(1) and (3) judging animal and vegetable oil:

firstly, 50ml of waste oil sample is taken, hot alkali solution and water are poured into the waste oil sample, and the mixture is shaken up to fully react;

separating the mixed solution in the first step, taking the upper oil liquid of the mixed solution, and judging that the waste oil contains animal and vegetable oil when the volume of the upper oil liquid is below 45 ml;

(2) the waste oil is subjected to primary treatment, solid waste is separated out from the waste oil by a raw material pump through a centrifugal machine after the waste oil is settled and dehydrated, the waste oil layer is collected and separated into waste oil, waste water and slag, the obtained waste oil and waste water are subjected to evaporation treatment, and moisture in the waste oil is removed to obtain a mixture of waste mineral oil and animal and vegetable oil;

(3) removing animal and vegetable oil from the waste oil, fully mixing hot alkali solution and water with the mixture of the waste mineral oil and the animal and vegetable oil obtained in the step (2), and standing and precipitating after mixing;

(4) treating waste mineral oil;

a, taking the upper-layer oil liquid precipitated in the step (3), treating the upper-layer oil liquid by a centrifugal machine to separate solid waste, namely salts generated after the animal and vegetable oil is subjected to hot alkali treatment and water dissolution;

b, performing vacuum dehydration on the waste oil separated in the step a, enabling the dehydrated waste mineral oil to pass through a high-intensity magnetic field pipeline, collecting abrasion iron powder in the waste oil, and pressing the obtained waste oil into a high-frequency vibration membrane for treatment to obtain clean mineral oil.

2. The technique for discriminating and removing animal and vegetable oils contained in waste oil according to claim 1, wherein: the vacuum dehydration environment temperature in the step (4) is 90 ℃, and the water content of the dehydrated waste mineral oil is less than 1%.

3. The technique for discriminating and removing animal and vegetable oils contained in waste oil according to claim 1, wherein: the performance indexes of the high-intensity magnetic field pipeline in the step (4) are as follows: the magnetic field intensity in the pipeline is in the range of 2000-25000 oersted.

4. The technique for discriminating and removing animal and vegetable oils contained in waste oil according to claim 1, wherein: the high-frequency vibration film in the step (4) adopts a frequency modulation motor, and the frequency range is 17-80 Hz; the amplitude is 5-25 mm.

5. The technique for discriminating and removing animal and vegetable oils contained in waste oil according to claim 1, wherein: the temperature range of the hot alkali solution in the step (1) and the step (3) is 70-90 ℃.

6. The technique for discriminating and removing animal and vegetable oils contained in waste oil according to claim 1, wherein: the rotating speed range of the centrifugal machine in the step (4) is 4000-.

7. The technique for discriminating and removing animal and vegetable oils contained in waste oil according to claim 1, wherein: the hot alkali solution is sodium hydroxide solution.

8. The technique for discriminating and removing animal and vegetable oils contained in waste oil according to claim 1, wherein: the volume ratio of the hot alkali solution, the water and the waste oil in the step (1) is 1:1: 1.

Technical Field

The invention relates to the technical field of waste oil purification, in particular to a technology for distinguishing and removing animal and vegetable oil in waste oil.

Background

The main component of animal and vegetable oils is glyceride of fatty acid, so it is also called fatty oil, mineral oil is petroleum, shale oil and their products, the main component is hydrocarbon, the main component is aliphatic hydrocarbon.

For a waste mineral oil recovery factory, the source of waste oil is not wide, the collected waste oil may be mixed with animal and vegetable oil, if the waste oil is directly recovered and processed under an unknown condition, the animal and vegetable oil may pollute and damage equipment due to different properties of the animal and vegetable oil and the mineral oil, and the quality of the separated oil cannot reach the standard, so that the loss of the factory is caused, and therefore, the problem of determining and removing the animal and vegetable oil in the waste oil is urgently needed to be solved.

Disclosure of Invention

Based on the technical problems in the background art, the invention provides a technology for distinguishing and removing animal and vegetable oil in waste oil, and solves the problems in the background art.

The invention provides the following technical scheme: a technology for distinguishing and removing animal and vegetable oil in waste oil comprises the following steps:

(1) and (3) judging animal and vegetable oil:

firstly, 50ml of waste oil sample is taken, hot alkali solution and water are poured into the waste oil sample, and the mixture is shaken up to fully react;

and secondly, separating the mixed solution in the first step, taking the upper-layer oil of the mixed solution, and judging that the waste oil contains animal and vegetable oil when the volume of the upper-layer oil is below 45 ml.

(2) The waste oil is subjected to primary treatment, solid waste is separated out by a raw material pump through a centrifugal machine after the waste oil is settled and dehydrated, a waste oil layer is collected and separated into waste oil, waste water and slag, the obtained waste oil and waste water are subjected to evaporation treatment, and water in the waste oil is removed to obtain a mixture of waste mineral oil and animal and vegetable oil.

(3) Removing animal and vegetable oil from the waste oil, fully mixing the hot alkali solution and water with the mixture of the waste mineral oil and the animal and vegetable oil obtained in the step (2), and standing and precipitating after mixing.

(4) Waste mineral oil treatment:

a, taking the upper-layer oil liquid precipitated in the step (3), treating the upper-layer oil liquid by a centrifugal machine to separate solid waste, namely salts generated after the animal and vegetable oil is subjected to hot alkali treatment and water dissolution;

b, performing vacuum dehydration on the waste oil separated in the step a, enabling the dehydrated waste mineral oil to pass through a high-intensity magnetic field pipeline, collecting abrasion iron powder in the waste oil, and pressing the obtained waste oil into a high-frequency vibration membrane for treatment to obtain clean mineral oil.

Preferably, the temperature of the vacuum dehydration environment in the step (4) is 90 ℃, and the water content of the dehydrated waste mineral oil is less than 1%.

Preferably, in the step (4), the performance indexes of the high-intensity magnetic field pipeline are as follows: the magnetic field intensity in the pipeline is in the range of 2000-25000 oersted.

Preferably, the high-frequency vibration film in the step (4) adopts a frequency modulation motor, and the frequency range is 17-80 Hz; the amplitude is 5-25 mm.

Preferably, the temperature of the hot alkali solution in the step (1) and the step (3) is in the range of 70-90 ℃.

Preferably, the rotation speed range of the centrifuge in the step (4) is 4000-.

Preferably, the hot alkaline solution is a sodium hydroxide solution.

Preferably, the volume ratio of the hot alkali solution, the water and the waste oil in the step (1) is 1:1: 1.

By adopting the technical scheme, the invention has the beneficial effects that:

1. the technology for distinguishing and removing the animal and vegetable oil in the waste oil utilizes the difference of the chemical properties of the animal and vegetable oil and the mineral oil to extract and analyze samples, the animal and vegetable oil reacts with thermokalite to be dissolved in water, the mineral oil does not react with the thermokalite, the waste oil can be judged whether to contain the animal and vegetable oil, the operation is convenient, and the reliability is high.

2. This animal and vegetable oil technique in the waste oil of distinguishing and getting rid of utilizes thermokalite reaction can high-efficiently separate the animal and vegetable oil in the waste oil through constantly filtering, has avoided the processing hidden danger that probably exists, has solved the problem that proposes among the background art.

Detailed Description

The technical solution of the present invention will be described in detail below with reference to specific examples.

A technology for distinguishing and removing animal and vegetable oil in waste oil comprises the following steps:

(1) and (3) judging animal and vegetable oil:

firstly, 50ml of waste oil sample is taken, hot alkali solution and water are poured into the waste oil sample, and the mixture is shaken up to fully react;

and secondly, separating the mixed solution in the first step, taking the upper-layer oil of the mixed solution, and judging that the waste oil contains animal and vegetable oil when the volume of the upper-layer oil is below 45 ml.

(2) The waste oil is subjected to primary treatment, solid waste is separated out by a raw material pump through a centrifugal machine after the waste oil is settled and dehydrated, a waste oil layer is collected and separated into waste oil, waste water and slag, the obtained waste oil and waste water are subjected to evaporation treatment, and water in the waste oil is removed to obtain a mixture of waste mineral oil and animal and vegetable oil.

(3) Removing animal and vegetable oil from the waste oil, fully mixing the hot alkali solution and water with the mixture of the waste mineral oil and the animal and vegetable oil obtained in the step (2), and standing and precipitating after mixing.

(4) Waste mineral oil treatment:

a, taking the upper-layer oil liquid precipitated in the step (3), treating the upper-layer oil liquid by a centrifugal machine to separate solid waste, namely salts generated after the animal and vegetable oil is subjected to hot alkali treatment and water dissolution;

b, performing vacuum dehydration on the waste oil separated in the step a, enabling the dehydrated waste mineral oil to pass through a high-intensity magnetic field pipeline, collecting abrasion iron powder in the waste oil, and pressing the obtained waste oil into a high-frequency vibration membrane for treatment to obtain clean mineral oil.

The temperature of the vacuum dehydration environment in the step (4) is 90 ℃, the water content of the dehydrated waste mineral oil is less than 1 percent, and the performance indexes of the high-intensity magnetic field pipeline in the step (4) are as follows: the magnetic field intensity range in the pipeline is 2000-25000 oersted, the high-frequency vibration film in the step (4) adopts a frequency modulation motor, and the frequency range is 17-80 Hz; the amplitude is 5-25 mm, the temperature range of the thermocaustic alkali solution in the step (1) and the step (3) is 70-90 ℃, the rotating speed range of the centrifugal machine in the step (4) is 4000-.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.