An environment-friendly rubber filling oil anti-yellowing treatment process

Abstract

The invention relates to an anti-yellowing treatment process of environment-friendly rubber filling oil and belongs to the technical field of rubber filling oil. The anti-yellowing treatment process is characterized by comprising process steps as follows: 1) to-be-treated rubber filling oil is added to an extraction kettle and subjected to extraction separation with an oxidation-extraction mixed fluid, the fluid flow of an oxidation solution is 1 mL / h-20 mL / h, the fluid flow of an extraction solution is 40 mL / h-100 mL / h, the extraction temperature is 175-195 DEG C, the initial pressure of extraction is 1.5 MPa-2.0 MPa, and the stirring rate is 100-300 rpm; the mixed fluid with the extraction solution dissolved is distilled, and the mixed fluid with rubber filling oil and an extracting agent dissolved is left to stand for layering separation. The decoloration refinement method has higher decoloration capacity than existing common solvent refinement or adsorption refinement method, the recovery rate of a target product is higher than 98%, and the anti-yellowing performance of the rubber filling oil subjected to decoloration refinement is higher.

Description

technical field [0001] An environment-friendly rubber filling oil anti-yellowing treatment process belongs to the technical field of rubber filling oil. Background technique [0002] With the development of the rubber industry, rubber oil occupies an increasingly important position in the rubber oil industry. Since the domestic green and environment-friendly naphthenic rubber oil was put on the market, it has been widely welcomed by domestic users. However, during the use of naphthenic rubber oil, the shortcomings of domestic rubber filler oils have gradually been exposed, such as poor light and thermal stability. Although high-pressure hydrogenation technology is a new technology developed in the last 20 to 30 years, and its superiority has been unanimously recognized by the petroleum processing industry, it cannot fundamentally solve the problem of poor light and heat stability of oil products. [0003] The precipitates produced after light irradiation are mainly heavy a...

AI Technical Summary

Problems solved by technology

[0004] Traditional industrial methods for improving photostability mainly include: solvent extraction or separation, chemical treatment or chemical reformation, blending solubilization and improved hydrogenation process, including solvent post-treatment, adsorption post-treatment and activated clay, Activated carbon adsorption post-treatment (contact refining) and other methods can be used to remove, but with this method, although the light stability of the oil product has improved, the yield of the target product is low, it is still relatively sensitive to light, and the stability of the obtained product is not stable. OK, so getting phased out

[0005] Light screeners, UV absorbers, energy transfer agents, antioxidants and radical scavengers, etc., although relatively economical with the "addition of photostabilizers" approach, require extensive screening, taking into account the additives chosen Due to factors such as the influence on certain properties of oil products, the market adoption rate is low