Disposal method for XDK adsorbent for waste transformer oil for standardized discharge

Abstract

The invention relates to a disposal method for an XDK adsorbent for waste transformer oil for standardized discharge. The method includes the following steps: adding petroleum ether into 500 g of thewaste XDK adsorbent according to the mass ratio of the petroleum ether to the waste XDK adsorbent of 3:1, performing stirring for 10 min, and allowing the mixture to stand to obtain an upper layer mixed liquid I and a lower layer adsorbent washed by petroleum ether; adding pure water into the adsorbent washed by the petroleum ether, performing stirring for 10 min, and allowing the mixture to standto obtain an upper layer mixed liquid II and a lower layer washed adsorbent; performing petroleum ether recovery on the upper layer mixed liquid I and the upper layer mixed liquid II through a rotaryevaporator, pouring the obtained waste liquid into an oil-water separation tank for oil-water separation, and performing pollutant detection on the water obtained after treatment; and placing the washed adsorbent in a muffle furnace, and performing roasting to obtain a regenerated XDK adsorbent. After the regenerated XDK adsorbent adsorbs an oil sample, the improvement of the insulation performance is close to that of an oil sample adsorbed by a novel XDK adsorbent; and the regenerated XDK adsorbent has a better adsorption effect.

Description

technical field [0001] The invention belongs to the technical field of adsorbent treatment, and in particular relates to a disposal method for waste transformer oil XDK adsorbent capable of meeting emission standards. Background technique [0002] At present, our country is vigorously building the power grid system, and the demand and deterioration of transformer oil are on the rise. Most of the components in the deteriorated transformer oil can be reused, so it is the best way to adsorb and regenerate them [2] . Adsorbent regenerates degraded transformer oil, which uses molecular adsorption to deeply absorb the degraded products in the oil that damage its physical and chemical properties, so that the degraded oil can reach the standard of use again [3] . [0003] In recent years, "an adsorbent for treating waste oil of transformers and its production method" invented by Xiaogan Power Supply Company of State Grid Hubei Electric Power Co., Ltd. has obtained the application...

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Problems solved by technology

[0005] In view of the above-mentioned existing production technology, the purpose of the present invention is mainly aimed at the problem that the current crystallization mother liquor contains many impurities and is difficult to directly recycle, and three regeneration methods of surfactant washing, organic solvent extraction, and baking method have been tested. Compared with the experimental results, the roasting method was selected, which not only made up for the above shortcomings, but also used this method to regenerate the adsorbent, which not only has low regeneration cost, simple process, strong applicability and good effect, but also restores various physical and chemical properties of the original adsorbent. performance, saving a large amount of production cost and material consumption for the production unit

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