FCC gasoline electrochemical desulfurization method based on ionic liquid

Abstract

The invention relates to an FCC gasoline electrochemical desulfurization method based on ionic liquid. The method comprises the following steps of: putting a fixed amount of ionic liquid and gasoline into an electrolytic tank, wherein the addition amount of the ionic liquid is 1 / 25-1 / 50 of that of the FCC gasoline by volume; connecting a working electrode, a counter electrode and a reference electrode with an electrolysis line with a chuck corresponding to an electrochemical workstation respectively; adjusting the electrode height so that the electrode is totally soaked in the liquid; controlling the reaction temperature to 20-80 DEG C; starting the power; and controlling the voltage to 1.0-2.5V, wherein the power-on time is 0.5-2 hours. Through the method provided by the invention, the desulfurization rate exceeds 95%, the sulfur content in the FCC gasoline can be reduced to below 10ppm, other quality indexes are not influenced, and the gasoline quality is upgraded to the European V standard. According to the invention, the technology is simple and can be performed at normal temperature under normal pressure; and moreover, the conditions are mild, byproducts are avoided, and the sulfides in fuel can be removed without changing the fuel composition.

Description

technical field

[0001] The invention belongs to the fields of chemical catalysis and gasoline and diesel desulfurization, and in particular relates to an ionic liquid-based electrochemical desulfurization method. Background technique

[0002] Since the electrochemical reaction is usually carried out at normal temperature and pressure, the toxicity and hazards are less than those of traditional organic synthesis methods. Electrochemical process is also an important part of clean technology. In today's increasingly severe global environmental problems, electrochemical technology has shown its importance even more. Ionic liquids have high ionic conductivity, negligible vapor pressure, and wide electrochemical window, all of which are important for electrochemical reactions.

[0003] Countries around the world have put forward stricter requirements on the sulfur content in oil products, and the production of clean oil products with low sulfur content has become a top priority. ...