Silica gel regenerator and regeneration method

Abstract

The invention relates to a decolouring silica gel regenerator and a regeneration method. The silica gel regenerator comprises a vertical heater body for filling silica gel. The upper portion of the heater body is provided with a hot air device for providing hot air. The lower portion of the heater body is equipped with an air-discharge mechanism. Thermal current which is provided by the hot air device and is in the core space of the heater body is discharged out of the heater body through the air-discharge mechanism from top to bottom. The silica gel regeneration method contains the following steps of: filling silica gel into the heater body; heating silica gel by the use of firewood as fuel until thermal current flows from the top of silica gel to the bottom and is discharged out of the bottom of the heater body; stopping heating after the thermal current at the bottom of the heater body contains no steam or oil, cooling, and discharging to obtain the product. The invention can guarantee regeneration and activation effects of silica gel and solves technical problems unsolved by technical personnel in the field for a long time. According to the invention, present silica gel and products of the same kind can be activated and regenerated, and use cost of products is greatly reduced.

Description

technical field [0001] The invention relates to a process and equipment for regenerating and activating a decolorizing material used for decolorizing oil products. Background technique [0002] At present, oils such as transformer oil, turbine oil, and lubricating oil will be oxidized or undergo other chemical changes after a period of use, change color and smell, and bring danger to the use of oil products. For example, the oxidation of transformer oil may cause Acid change, acidic and alkaline substances are conductive, which can easily lead to short-circuit and burnt transformers. Therefore, the acid content standard of transformer oil in the national standard is less than or equal to 0.03%. Decolorization silica gel is commonly known as silica gel decolorization sand, such as column chromatography silica gel, coarse-pore silica gel, fine-pore silica gel, etc. are all porous substances, and the main component is silica. Non-toxic, colorless and odorless, and insoluble in...

AI Technical Summary

Problems solved by technology

However, there are no successful reported cases at home and abroad. The reason is that it is not easy to master the activation and regeneration methods and process conditions of decolorized silica gel. For example, it is difficult to master the choice of fuel and heating method. Too high temperature will easily lead to deformation of the gel crystal and loss of decolorization function; Conventional coal and gas heating will easily lead to changes in the chemical composition and structure of silica gel due to the chemical components such as sulfur and phosphorus in the fuel, and will also lose the decolorization function

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