Waste engine oil continuous regeneration pretreatment device capable of reducing pollution and process thereof

Abstract

The invention discloses a waste engine oil continuous regeneration pretreatment device and process capable of reducing pollution, the waste engine oil continuous regeneration pretreatment device comprises a raw material storage tank, dehydration and impurity removal equipment, a dechlorination reactor, a hydrocatalytic thermal decomposition reactor and a normal-pressure flash tower, and the specific process comprises the following steps: chemical reaction dechlorination: conveying waste engine oil into the dehydration and impurity removal equipment for dehydration and impurity removal; then conveying to a dechlorination reactor; the waste engine oil obtained after chemical reaction dechlorination is subjected to heat exchange through a heat exchange system and then conveyed into a hydrogen catalytic thermal decomposition reactor to be subjected to hydrogen catalytic thermal decomposition; and normal-pressure flash evaporation: conveying the waste engine oil subjected to hydrocatalytic thermal decomposition to a normal-pressure flash evaporation tower for dehydration and extraction of light oil. The process not only can solve the problems of corrosion, pipeline blockage, catalyst poisoning and the like caused by organic chlorine to a waste engine oil regeneration device, but also can solve the problems of difficult two-phase separation and unclear interface caused by easy emulsification of a clean dispersant and other surfactants during solvent refining.

Description

technical field [0001] The invention relates to the fields of waste engine oil regeneration and petrochemical industry, in particular to a pollution-reducing waste engine oil continuous regeneration pretreatment device and a process thereof. Background technique [0002] With the rapid growth of construction machinery, electric power, automobile, steel, ship, machine tool and other industries and the continuous improvement of equipment technology, the sharp increase in demand for engine oil and the limited oil reserves in the world have caused a sharp rise in the price of petroleum products. Therefore, in With the international crude oil price rising year by year, it is no longer advisable to use waste engine oil as fuel oil in the past. On the contrary, recycling the undeteriorated base oil in waste engine oil is not only beneficial to protect the environment, reduce pollution, but also Promote the healthy development of the environmental protection industry. [0003] The ...

AI Technical Summary

Problems solved by technology

In recent years, new pollution-free regeneration processes have been developed. Although pretreatment technologies such as molecular short-path distillation, thin-film evaporation technology, and solvent refining have achieved certain industrial effects, these technologies are all single technologies, and there is no complete set of pretreatment for waste engine oil. The comprehensive recycling process scheme of waste engine oil is low; in order to ensure the long-term operation of the waste engine oil regeneration base oil device, how to effectively destroy the additives in the waste oil and remove the waste oil in the pretreatment process of waste engine oil The middle ash, organic chlorine, mechanical impurities, colloids, asphaltene and metals become extremely important; for this purpose, a waste engine oil continuous regeneration pretreatment device and its process for reducing pollution are provided

Images