Oil product decolorizing agent

Abstract

The invention relates to an oil product decolorizing agent which is composed of sulfuric acid (with a concentration no lower than 98%), anhydrous ethanol, and oleic acid. According to the invention, preparation is operated under normal temperature and normal pressure according to a certain ratio and a certain sequence. The decolorizing agent has the advantages of no three-waste pollution, low cost, easy-to-purchase raw materials, simple process, and convenient application. With the decolorizing agent, oxidized black diesel oil produced during catalytic cracking coking and waste oil and waste rubber oil refining can be decolorized, and a chromaticity can reach a national standard.

Description

Technical field [0001] The invention relates to an oil decolorizing agent, which belongs to petrochemical products. Background technique [0002] At present, because the diesel produced by small and medium-sized refineries through catalytic cracking, coking and other methods contains a large amount of sulfur, nitrogen, oxygen heterocyclic compounds, olefin compounds and phenolic substances, the stability of the diesel is poor. After being left for a few days, some It can change color and become turbid even in one day, and produce a large amount of colloid and sediment. Non-hydrocarbon compounds, especially non-alkaline oxides, such as pyrroles, tetroxocarbazole, etc. are very unstable in nature and can easily oxidize into peroxides and cause hydrocarbons. Oxidation, quinoline has an oxidation catalytic effect when non-alkaline oxides coexist, and can accelerate the formation of oxides and the oxidation of hydrocarbons. The above reactions not only deepen the color of diesel ...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the diesel oil produced by small and medium refineries through catalytic cracking and coking, etc., it contains a large amount of sulfur, nitrogen, oxygen heterocyclic compounds, olefin compounds and phenolic substances, which makes the stability of diesel oil poor. After a few days, some Discoloration and turbidity even in one day, and a large amount of colloid and sediment are produced. Non-hydrocarbon compounds, especially non-alkaline oxides, such as pyrrole and tetraoxycarbazole, are very unstable and are easily oxidized into peroxides and cause hydrocarbons. Oxidation, quinolines have an oxidation catalytic effect when non-alkaline oxides coexist, and can accelerate the formation of oxides and the oxidation of hydrocarbons. The above reactions not only deepen the color of diesel oil, but also affect the use value of oil products, and in oil products It will also be accompanied by a large amount of black insoluble colloidal deposits, which will cause blockage of the oil supply pipeline and affect the normal oil supply. This kind of fuel combustion will form carbon deposits on the engine nozzle, which will aggravate engine wear and cause nozzle blockage

[0003] The existing method to solve the decolorization of oxidized and blackened diesel oil is to add industrial sulfuric acid to stir, and then add sodium hydroxide to neutralize or add activated clay to absorb after reaction and precipitation. reduction

Currently disclosed CN1058038A and CN1279269A can only process catalytic diesel oil, but cannot process other diesel oil such as coking diesel oil, thermally cracked diesel oil and finished diesel oil containing more oxidized insolubles and colloids

These disclosed patent methods are deficient: 1. only adapt to catalytic diesel oil, coking diesel oil, washing oil, thermal cracking diesel oil, black diesel oil oxidized during waste engine oil and waste rubber refining are invalid

②The decolorization process is complicated, the addition amount is large, and the cost is high

③There is a lot of slag, reaching 5-10%, unstable and easy to restore

Therefore, the above-mentioned patents cannot actually be popularized and applied.