Vegetable insulating oil treating full-set process

A plant insulating oil and vegetable oil technology, which is applied in the direction of fat oil/fat refining and fat generation, can solve the problems of high dielectric loss requirements, high acid value, and complicated filtering procedures of insulating oil, and achieve the effect of improving electrical performance parameters

Active Publication Date: 2014-12-24
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This traditional process has the following disadvantages: (1) high acid value: the prepared oil only needs to meet the requirements of the edible vegetable oil hygiene standard GB2716-2005, and the acid value is less than 3, but the insulating oil has a very high acid value. GB / T7595-2008 requires that the acid value of insulating oil for transformers must be less than 0.03, (2) high dielectric loss: there is no requirement for dielectric loss for edible oil, but insulating oil has very high requirements for dielectric loss to ensure the safe operation of power equipment , GB / T7595-2008 requires the dielectric loss of insulating oil for transformers to be less than 0.005
Activated carbon also needs to be added in this step, resulting in complicated and costly subsequent filtration procedures

Method used

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  • Vegetable insulating oil treating full-set process
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  • Vegetable insulating oil treating full-set process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: The environment-friendly insulating oil using vegetable rapeseed oil as raw material of the present invention can be prepared by the following method, and the complete process for processing the vegetable insulating oil includes the following steps:

[0035] (1) Pump the four-grade rapeseed oil into the primary alkali training pot, raise the temperature of the vegetable oil to 70°C, add NaOH solution at room temperature, stir and mix at a speed of 70r / min for 15min, then stir and mix at a speed of 40r / min for 35min After standing for 11 hours, remove the lower layer of saponins and get the upper layer of oil;

[0036] (2) Heat the oil to 85°C, add ultrapure water with a temperature of 90°C, the quality of ultrapure water is 11% of the oil mass, stir at a speed of 65r / min for 15min, and let stand for 2h to remove the lower layer of wastewater, Take the upper layer of oil.

[0037] (3) repeat (2) twice to remove the saponins in the oil;

[0038] (4) Pump t...

Embodiment 2

[0049] Embodiment 2: The environmental protection insulating oil using vegetable rapeseed oil as raw material of the present invention can be prepared by the following method, and the complete process of processing the vegetable insulating oil includes the following steps:

[0050] (1) Pump the fourth-grade rapeseed oil into the primary alkali training pot, raise the temperature of the vegetable oil to 45°C, add NaOH solution at room temperature, stir and mix at a speed of 75r / min for 10min, then stir and mix at a speed of 35r / min for 40min After standing for 14 hours, remove the lower layer of saponins and get the upper layer of oil;

[0051] (2) Heat the oil to 80°C, add ultra-pure water with a temperature of 95°C, the quality of ultra-pure water is 8% of the oil mass, stir at a speed of 65r / min for 15min, let stand for 2h, remove the lower layer of wastewater, Take the upper layer of oil.

[0052] (3) Repeat (2) twice;

[0053] (4) Pump the oil to the decolorization pot, ...

Embodiment 3

[0063] Embodiment 3: The steps are the same as in Embodiment 1, except that the soybean oil used is used to prepare excellent insulating oil.

[0064] The basic parameters of the vegetable insulating oil made in the present embodiment are shown in the table below:

[0065]

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PUM

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Abstract

The invention discloses a vegetable insulating oil treating full-set process which includes the following steps: 1 conducting alkali refining, washing, decoloration and deodorization on vegetable oil; 2 filtering and dehydrating refined vegetable oil; 3 adsorbing the dehydrated vegetable oil, dehydrating the adsorbed vegetable oil and adding antioxidant into the oil. The step 3 includes (1) adding the oil subjected to vacuum dehydration into an adsorption container, utilizing argil as an adsorbent, adding 2-4% of argil, meanwhile heating the oil to enable the oil temperature to reach 45-70 DEG C, stirring the mixture for 2-4h with the rotating speed as 55-75 r/min and utilizing a slag extractor to conduct argil filtering treatment on the oil; (2) further filtering the vegetable oil, enabling the oil to pass through a filter screen and enter the vacuum dehydration process and repeating the step (2); (3) pumping the vegetable oil into a cooling stirring tank, conducting quick stirring at the speed of 30-60 r/min, adding an additive and maintaining the stirring speed for 3-5h. By means of the technical scheme, the obtained insulation oil reaches the standard for transformer oil, excellent vegetable insulation oil is obtained, and the oil can be greatly popularized in use.

Description

technical field [0001] The invention relates to the field of vegetable insulating oil refining, in particular to a complete set of plant insulating oil treatment processes of multiple alkali refining, filtration and adsorption processes for preparing high-quality insulating oil from vegetable oil. Background technique [0002] Vegetable insulating oil is a high ignition point, environmentally friendly liquid dielectric with good insulating properties. At present, the domestic plant insulating oil refining process is still immature. The existing vegetable oil refining process is mostly aimed at the refining of edible oil. oxidizing agent. [0003] This traditional process has the following disadvantages: (1) high acid value: the prepared oil only needs to meet the requirements of the edible vegetable oil hygiene standard GB2716-2005, and the acid value is less than 3, but the insulating oil has a very high acid value. GB / T7595-2008 requires that the acid value of insulating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/00
Inventor 李剑杨丽君廖瑞金陈伟根杜林王有元姚成果王飞鹏赵学童
Owner CHONGQING UNIV
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