Waste oil distillation and cracking catalytic system and production technology

Abstract

The invention discloses a waste oil distillation and cracking catalytic system and a production technology. The system comprises a first-stage distillation device, a second-stage distillation device and a catalytic cracking tower, wherein the first-stage distillation device, the second-stage distillation device and the catalytic cracking tower communicate with one another in sequence; a gaseous component collecting port I is formed in the first-stage distillation device; a gaseous component collecting port II and a gaseous component collecting port III are formed in the catalytic cracking tower; and a negative pressure generator is connected to the catalytic cracking tower. The waste oil distillation and cracking catalytic system and the production technology have the advantages that the structure is novel, implementation is easy, the reliability is high, waste oil can regenerate diesel oil and base oil by utilizing one set of waste oil distillation cracking catalytic system, and therefore the equipment procurement and investment cost is greatly lowered; and in addition, the site area demand is small, and therefore the burden of enterprises is effectively relieved, and extremely high economic and market values are achieved.

Description

technical field [0001] The invention belongs to the technical field of oil recycling and refining, and in particular relates to a waste oil distillation cracking catalytic system and a production process. Background technique [0002] The regeneration and utilization of waste lubricating oil (waste engine oil) can not only produce huge economic benefits, but also have great significance to environmental protection, which can effectively reduce the pollution of air, water and soil. Therefore, the research efforts on recycling waste lubricating oil have been accelerated both at home and abroad. [0003] At present, waste engine oil regeneration methods are divided into the following three categories: 1. Chemical treatment: waste lubricating oil undergoes steps such as pickling, alkali washing, neutralization, and decolorization. It takes a long time and a variety of chemical raw material reactions to realize waste lubricating oil Regeneration will produce a large amount of in...

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Problems solved by technology

[0003]Currently, waste engine oil regeneration methods are divided into the following three categories: 1. Chemical treatment: waste lubricating oil undergoes steps such as pickling, alkali washing, neutralization, and decolorization. It takes a long time and a variety of chemical raw materials to regenerate waste lubricating oil. At the same time, a large amount of industrial waste such as acid residue will be produced, causing environmental pollution. Therefore, chemical treatment is a waste engine oil regeneration method that is currently prohibited by the state; 2 , Distillation method: The traditional distillation method, commonly known as the soil refining method, is to directly heat the waste engine oil to vaporize it, and the high-temperature gaseous oil mist is condensed into liquid oil under the cooling effect of the condenser to be collected. The existence of the distillation method The biggest problem is the low purity of the collected oil (including gasoline, diesel oil and other mixed oils), easy oxidation and discoloration, and low production efficiency; 3. Molecular distillation: molecular distillation can overcome chemical treatment and distillation. However, the equipment structure used in the three waste engine oil regeneration processes is the most complicated, the manufacture and installation of the equipment are relatively difficult, the investment is huge, and the operating cost is high, which cannot meet the large-scale waste lubricating oil regeneration processing needs.

[0004]The existing set of distillation cracking catalytic system can only produce a set of distillation cracking products, and usually regenerate waste oil into diesel oil or base oil. To regenerate waste oil into diesel and to regenerate waste oil into base oil, two sets of distillation cracking catalytic systems are required, which greatly increases the cost of equipment procurement and investment, and requires a large site area, which increases the burden on enterprises

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