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Dust-free production method of narrow-distillation-range low-viscosity insulating oil

A production method and low-viscosity technology, which are used in the petroleum industry, hydrocarbon oil treatment, and multi-stage series refining process treatment. problems, to achieve the effect of improving the production environment, good anti-oxidation safety, and high mixing efficiency

Inactive Publication Date: 2020-05-08
JIANGSU ZHONGSHENG GAOKE ENVIRONMENTAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the preparation process of the existing low-viscosity insulating oil, a certain amount of clay needs to be put into the clay refining kettle. In order to increase the contact area with the oil, the particle size of the clay should be as small as possible. During the process, a large amount of clay powder located on the liquid surface is difficult to mix with the oil smoothly, and the mixing efficiency is low, and the clay powder is easy to float into the air during the process of adding clay and mixing clay, resulting in a bad production environment and affecting the breathing of the staff healthy

Method used

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  • Dust-free production method of narrow-distillation-range low-viscosity insulating oil
  • Dust-free production method of narrow-distillation-range low-viscosity insulating oil
  • Dust-free production method of narrow-distillation-range low-viscosity insulating oil

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Effect test

Embodiment 1

[0048] see figure 1 , a dust-free production method of insulating oil with narrow boiling range and low viscosity, comprising the following steps:

[0049] S1. Distillation and cutting, pump the hydrogenated low-viscosity mineral oil into the rectification tower for rectification and cutting, and cut out the distillate as base oil with a temperature of 300-350°C;

[0050] S2, urea dewaxing, the base oil obtained in S1 is input into the urea dewaxing device, and the dry urea dewaxing process is used for deep dewaxing at a temperature of 25-35°C, and the dewaxed oil produced has a pour point of -25 dewaxed oil at ℃;

[0051] S3, clay refining, pump the dewaxed oil obtained in S2 into a dust-free clay refining kettle, heat up to 80°C, add the prepared clay with a weight ratio of 3%, heat and stir for 30min, and filter through a filter press to obtain insulating oil base oil;

[0052] S4, blending reaction, pump 5000kg of special base oil into the blending reaction kettle with ...

Embodiment 2

[0055] see figure 1 , a dust-free production method of insulating oil with narrow boiling range and low viscosity, comprising the following steps:

[0056] S1, rectification and cutting, pump the hydrotreated 5# low-viscosity mineral oil into the rectification tower for rectification and cutting, and cut out the base oil whose distillate is 300-345°C;

[0057] S2, urea dewaxing, the base oil obtained in S1 is input into the urea dewaxing device, and the dry urea dewaxing process is used for deep dewaxing at a temperature of 30-40°C, and the dewaxed oil produced has a pour point of -25 dewaxed oil at ℃;

[0058] S3, clay refining, pump the dewaxed oil obtained in S2 into a dust-free clay refining kettle, heat to 70°C, add 2% clay that has been prepared, keep stirring for 20 minutes, and filter through a filter press to obtain insulating oil base oil;

[0059] S4, blending reaction, pump 5000kg of special base oil into the blending reaction kettle with a rotating speed of 80-...

Embodiment 3

[0062] see figure 1 , a dust-free production method of insulating oil with narrow boiling range and low viscosity, comprising the following steps:

[0063] S1, rectification and cutting, pump the refined special white oil into the rectification tower for rectification and cutting, and cut out the distillate as base oil with a temperature of 305-350°C;

[0064] S2, urea dewaxing, the base oil obtained in S1 is input into the urea dewaxing device, and the dry urea dewaxing process is used for deep dewaxing at a temperature of 25-35°C, and the dewaxed oil produced has a pour point of -26 dewaxed oil at ℃;

[0065] S3, clay refining, pump the dewaxed oil obtained in S2 into a dust-free clay refining kettle, heat up to 90°C, add the prepared clay with a weight ratio of 4%, heat and stir for 40min, and filter through a filter press to obtain insulating oil base oil;

[0066] S4, blending reaction, pump 5000kg of special base oil into the blending reaction kettle with a rotation s...

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Abstract

The invention discloses a dust-free production method of narrow-distillation-range low-viscosity insulating oil, belonging to the technical field of oil production. The dust-free production method ofthe narrow-distillation-range low-viscosity insulating oil in the invention comprises the following steps: rectifying and cutting to obtain base oil; dewaxing with urea to obtain dewaxed oil; refiningwith carclazyte to obtain insulating oil base oil; a blending reaction; and vacuum filtration to obtain the narrow-distillation-range low-viscosity insulating oil. The narrow-distillation-range low-viscosity insulating oil produced by the method has the advantages of narrow fraction, low viscosity, fast heat dissipation, good cooling performance, good electrical insulation performance, small medium loss, good antioxidant safety, long service life, low condensation point, good low-temperature fluidity, high flash point and small evaporability; and in the carclazyte refining step, a dustless carclazyte refining kettle is used, so addition of the mixing of carclazyte powder are finished in oil liquid, mixing efficiency is high, floating dust is not easy to generate, and a production environment is improved.

Description

technical field [0001] The invention relates to the technical field of oil product production, in particular to a dust-free production method of insulating oil with narrow boiling range and low viscosity. Background technique [0002] With the rapid development of the national economy, the electric power industry, which is the first of the national economy, has been greatly developed. With the continuous expansion of the power grid, the transformer oil matching it is also increasing. Transformer oil is one of the important raw materials for power transmission and transformation systems. It is mainly used in oil-filled electrical equipment such as transformers and reactors to play the role of insulation, heat dissipation and cooling. [0003] Large-scale domestic oil refineries, such as PetroChina Karamay Lubricant Oil Factory and Lanzhou Oil Refinery, have been engaged in the research and development and production of transformer oil for a long time. They cut a specific frac...

Claims

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Application Information

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IPC IPC(8): C10M101/02C10M169/04C10G53/08C10N40/16C10N20/02C10N30/02
CPCC10M101/02C10M169/04C10G53/08C10M2207/026C10M2203/1006C10G2300/301C10G2300/201
Inventor 许春栋蒋华良许群益
Owner JIANGSU ZHONGSHENG GAOKE ENVIRONMENTAL CO LTD
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