Oil desulphurization method utilizing microwave driving

Abstract

The invention relates to an oil desulphurization method utilizing microwave driving. The invention is characterized in that the oil desulphurization method includes the following steps: desulphurization reaction auxiliary agent and emulsifier are added into oil, emulsification is carried out on the system, so as to obtain emulsion with oil and water uniformly dispersed; the emulsion reacts under the microwave radiation; after reaction is finished, extracting agent is added into the system in steps, and oil product after desulphurization is separated. Reaction auxiliary agent is mixed aqueous solution of peroxide and acid, the volume ratio of the two is 10-1:1, the volume ratio of auxiliary agent mixed aqueous solution and oil product is 1:5-30; the peroxide is 5-30% aqueous hydrogen peroxide solution, 2-10wt% of hydrogen peroxide or chlorine dioxide aqueous solution with the concentration of 2-10g / L; and the acid is formic acid, acetic acid, dicholoroacetic acid, trifluoroacetic acid, benzoic acid, citric acid, tartaric acid, ascirbuc acid, malic acid, hydrochloric acid or phosphoric acid.

Description

technical field [0001] The invention relates to a method for petroleum desulfurization, in particular to a method for petroleum desulfurization driven by microwaves. Background technique [0002] The existence of sulfur-containing compounds in petroleum will cause corrosion to refining equipment during the refining process, and will also have a non-negligible impact on the quality of refining catalysts, additives and petroleum products. What's more serious is that the sulfur dioxide produced after the use of sulfur-containing oil products has caused serious environmental pollution problems, which has greatly threatened the living environment and sustainable development of human beings. Therefore, the production and use of environmentally friendly and clean petroleum products has become a problem that countries all over the world pay attention to. The environmental protection regulations of various countries have put forward more and more strict standards for the allowable su...

AI Technical Summary

Problems solved by technology

The main disadvantage of the alkaline washing and refining method is that the desulfurization efficiency is low, and it will bring serious environmental problems. The use of a large amount of alkali will inevitably bring some secondary pollution

Although this method does not need to use hydrogen, the preferred perfluorinated acidic organic polymer, because the molecular weight of the organic polymer is large, it is difficult to dissolve, and the accumulation of organic products on the surface of the acidic organic compound will hinder the interaction between the acidic organic polymer catalyst and the raw material. Contact, thereby slowing down the desulfurization process, and may make the reaction impossible to complete, in addition, organic polymers are difficult to separate, will absorb oil, and fluorine-containing compounds are also unfriendly to the environment

The invention of CN200710027226.0 introduces a method for adsorption desulfurization. The method is simple in process and easy to operate, but it is difficult to regenerate the adsorbent. Low efficiency and small adsorption capacity, difficult to industrialize

Biocatalytic petroleum desulfurization technology was reported in "Progress of Biocatalytic Petroleum Desulfurization Technology" in Volume 21, No. 8, 2002. This technology can operate at low temperature and low pressure, does not require hydrogen, has low cost, and can process various oils. It has good flexibility, no pollution, and is environmentally friendly, but there are many obstacles in the activity, selectivity, stability and fermentation yield of biocatalysts. There are also many obstacles in the selection of strains, production and regeneration of biocatalysts. Unsolvable problems, and the process and engineering problems of biocatalysis technology, including the design of new bioreactors, separation technology, treatment of by-products and how not to reduce the quality of oil products, etc. are still in the laboratory research stage

[0006] In general, although the above technical solutions have made some progress in the desulfurization effect, there is no desulfurization technology that has a high desulfurization efficiency and can not reduce the quality of the oil at the same time, and generally has a large investment cost, which is still under research stage, immature technology

Images