Purification method of waste emulsified oil

A technology of emulsified oil and oil layer, applied in the direction of lubricating composition, etc., can solve the problems of waste of resources, environmental pollution, lack of economical and effective means, etc., and achieve the effect of high recycling rate, low one-time investment and stable treatment effect

Active Publication Date: 2014-06-11
BAOSTEEL ENG & TECH GRP +1
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  • Claims
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Problems solved by technology

[0002] There are many power equipments in industrial development, and emulsified oil as a cooling and lubricating medium is frequently and widely used. When the equipment is used, the emulsified oil is often mixed with the waste water and discharged together. Since the waste water contains more emulsified oil components, if it is directly discharged, it will not only affe

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  • Purification method of waste emulsified oil
  • Purification method of waste emulsified oil
  • Purification method of waste emulsified oil

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Effect test

Embodiment 1

[0019] A method for purifying waste emulsified oil, comprising three steps of pretreatment, comprehensive reaction and deep reaction, such as figure 1 As shown, proceed as follows:

[0020] During pretreatment, first heat the waste emulsified oil to 60°C, and then put the heated waste emulsified oil to settle for no less than 8 hours, so that the internal mixed solid impurities can be precipitated. Filter and remove, inflate and stir the filtered waste emulsified oil under the pressure of at least 0.2MPa, and the inflating and stirring time should not be less than 30min to complete the pretreatment;

[0021] In the comprehensive reaction, high-voltage electrolysis is first performed on the waste emulsified oil that has completed the pretreatment. The voltage during electrolysis is 10kV, the electrolysis time is 100min, and the precipitation is at least 30min after the end. Emulsion, inflated and stirred for 10min to 15min under at least 0.2MPa air pressure, inflated and stirr...

Embodiment 2

[0026] A method for purifying waste emulsified oil, comprising three sequential steps of pretreatment, comprehensive reaction and deep reaction,

[0027] During pretreatment, first heat the waste emulsified oil to 68°C;

[0028] In the comprehensive reaction, the voltage during electrolysis is 18kV, and the electrolysis time is 116min;

[0029] In the comprehensive reaction, catalyst one selects the H that the mass percent concentration is 82%. 3 PO 4 , H 3 PO 4 The quality of the solution is 2.5% of the waste emulsified oil quality; the solute of the demulsifier is a mixture of sodium lauryl sulfate and nonylphenol polyoxyethylene ether, and the quality of sodium lauryl sulfate is nonylphenol polyoxyethylene ether 82% of the mass, the mass percentage concentration of the demulsifier is 8.4%, and the consumption of the demulsifier is 6.4g per L of waste emulsified oil;

[0030] In the deep reaction, the catalyst two selects H2 with a mass percentage concentration of 32%. ...

Embodiment 3

[0033] A method for purifying waste emulsified oil, comprising three sequential steps of pretreatment, comprehensive reaction and deep reaction,

[0034] During pretreatment, first heat the waste emulsified oil to 76°C;

[0035] In the comprehensive reaction, the voltage during electrolysis is 26kV, and the electrolysis time is 132min;

[0036] In the comprehensive reaction, catalyst one selects the H that the mass percent concentration is 84%. 3 PO 4 , H 3 PO 4 The quality of the solution is 3.5% of the waste emulsified oil quality; the solute of the demulsifier is a mixture of sodium lauryl sulfate and nonylphenol polyoxyethylene ether, and the quality of sodium lauryl sulfate is the 99% of the mass, the mass percentage concentration of the demulsifier is 8.8%, and the consumption of the demulsifier is 6.8g per L of waste emulsified oil;

[0037] In the deep reaction, the catalyst two selects H2 with a mass percentage concentration of 34%. 2 o2 , H 2 o 2 The quality ...

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Abstract

The invention relates to the field of processing used lubricants to recover valuable products, and in particular relates to a purification method of waste emulsified oil. The purification method of the waste emulsified oil comprises three steps of pre-treating, comprehensive reacting and deep reacting which are carried out in sequence. The purification method of the waste emulsified soil is characterized by comprising the following steps in sequence: during pre-treating, heating the waste emulsified oil to reach the temperature of 60-100 DEG C, and then standing and precipitating the heated waste emulsified oil; during comprehensive reaction, performing high-pressure electrolysis and then adding a first catalyst and a demulsifying agent; during deep reacting, performing air agitation, and then adding a second catalyst. The purification method of the waste emulsified soil is high in purification degree, simple and convenient in operation, and high in treatment capacity.

Description

technical field [0001] The invention relates to the field of processing used lubricants to recover useful products, in particular to a method for purifying waste emulsified oil. Background technique [0002] There are many power equipment in industrial development, and emulsified oil as a cooling and lubricating medium is frequently and widely used. When the equipment is used, the emulsified oil is often mixed in the waste water and discharged together. Since the waste water contains more emulsified oil components, direct discharge will not only affect the The environment is polluted, and the waste is large. After being discharged into the municipal pipe network, it also increases the difficulty of sewage treatment. At present, there is still a lack of economical and effective means for the treatment of waste emulsified oil, which not only puts a lot of pressure on the environment, but also wastes resources. At the same time, emulsified oil is widely used in various industr...

Claims

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Application Information

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IPC IPC(8): C10M175/00
Inventor 施杰肖丙雁吴海东王万俊
Owner BAOSTEEL ENG & TECH GRP
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