White clay adsorption refining method used for waste lubricating oil regeneration

A technology for absorbing and refining waste lubricating oil, which is applied in the direction of lubricating compositions, etc., can solve the problems of large output of secondary hazardous waste, small output of secondary hazardous waste, and large amount of white clay, so as to reduce pollution and reduce Effect of dosage, effect enhancement

Inactive Publication Date: 2019-05-03
江苏森茂能源发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art, and to provide a clay adsorption and refining method for waste lubricating oil regeneration, which has the advantages of less clay consumption and a smaller output of secondary hazardous waste, and solves the problem of existing problems. Some white clay adsorption and refining methods use a lot of white clay and produce a large amount of secondary hazardous waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Put the purchased decolorized clay into the silo of the activation furnace, start the activation furnace, control the heating temperature at 300°C, and control the activation time for 2 hours. The activation time must make the water content of the activated decolorized clay less than 3%. Dry nitrogen for uninterrupted purging, the pressure of nitrogen purging is 0.1MPa, the activated material is sent to the transfer tank, the mouth of the material tank is sealed, the material is cooled, and the temperature is lower than 50 ℃, that is, the vacuum pump is turned on to Negative pressure is drawn from the transfer tank, the pressure is lower than -0.9MPa, the vacuum pump is stopped, the nitrogen valve of the transfer tank is opened, dry nitrogen is introduced, the pressure of the transfer tank is brought to normal pressure, and the nitrogen valve is closed. Then pump to negative pressure, inject nitrogen, repeat the operation once, when the lubricating oil refining section c...

Embodiment 2

[0030] Put the purchased decolorized clay into the silo of the activation furnace, start the activation furnace, control the heating temperature at 400°C, and control the activation time for 3 hours. The activation time must make the water content of the activated decolorized clay less than 2%. Dry nitrogen for uninterrupted purging, the pressure of nitrogen purging is 0.2MPa, the activated material is sent to the transfer tank, the mouth of the material tank is sealed, the material is cooled, and cooled to below 40 ℃, that is, the vacuum pump is turned on to Negative pressure is drawn from the transfer tank, the pressure is lower than -1.0MPa, the vacuum pump is stopped, the nitrogen valve of the transfer tank is opened, dry nitrogen is introduced, the pressure of the transfer tank is brought to normal pressure, and the nitrogen valve is closed. Then pump to negative pressure, inject nitrogen, repeat the operation once, when the lubricating oil refining section can enter the c...

Embodiment 3

[0032] Put the purchased decolorized clay into the silo of the activation furnace, start the activation furnace, control the heating temperature at 500°C, and control the activation time for 4 hours. The activation time must make the water content of the activated decolorized clay less than 1%. Dry nitrogen for uninterrupted purging, the pressure of nitrogen purging is 0.3MPa, the activated material is sent to the transfer tank, the mouth of the material tank is sealed, the material is cooled, and cooled to below 30 ° C, that is, the vacuum pump is turned on to Negative pressure is drawn from the transfer tank, the pressure is lower than -1.1MPa, the vacuum pump is stopped, the nitrogen valve of the transfer tank is opened, dry nitrogen is introduced, the pressure of the transfer tank is brought to normal pressure, and the nitrogen valve is closed. Then pump to negative pressure, inject nitrogen, repeat the operation once, when the lubricating oil refining section can enter the...

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PUM

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Abstract

The invention discloses a white clay adsorption refining method used for waste lubricating oil regeneration, and belongs to the technical field of white clay refining. The white clay adsorption refining method used for waste lubricating oil regeneration comprises following steps: bought decolored white clay is introduced into a material cabin of an activation furnace, the activation furnace is turned on, heating temperature is controlled to be 300 to 550 DEG C for 2 to 4h of activation, wherein it is ensured that after activation, the water content of decolored white clay is reduced to be lower than 3%, in activation process, dry nitrogen is adopted for continuous purging, and nitrogen gas purging pressure is controlled to be 0.1 to 0.3MPa; after activation, an obtained material is introduced into a transfer material tank, and the transfer material tank is sealed for material cooling. According to the white clay adsorption refining method used for waste lubricating oil regeneration, nitrogen protection equipment heating is adopted to increase the effective absorption capacity of activated white clay, after activation, the white clay is protected with dry nitrogen gas, and is introduced into a lubricating oil refining equipment rapidly, so that oil refining and decoloring effect is improved, white clay using amount is reduced, output amount of secondary hazardous waste in process is reduced, and environment pollution is reduced further.

Description

technical field [0001] The invention relates to the technical field of white clay refining, in particular to a method for adsorbing and refining white clay for regeneration of waste lubricating oil. Background technique [0002] Clay refining refers to the use of activated clay to treat oil at a certain temperature, reducing the residual carbon value and acid value or acidity of the oil, and improving the color and stability of the oil. The lubricating oil raw material undergoes solvent refining, solvent dewaxing and deasphalting processes. After treatment, the oil also contains a small amount of unseparated solvent, as well as macromolecular condensates and colloids generated by heating the recovered solvent. The existence of these impurities affects the stability, color and carbon residue value of the oil. The purpose of supplementing and refining lubricating oil raw materials can be achieved by using the method of white clay refining. [0003] In the process of refining ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M175/00
Inventor 林木茂林宇
Owner 江苏森茂能源发展有限公司
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