Adsorbent and method for removing sulfide from organic solvent

Abstract

The invention relates to an adsorbent for removing sulfide from an organic solvent. The adsorbent is composed of copper compound powder and / or silver compound powder, wherein the grain size of the copper compound powder and / or silver compound powder is 0.1mu m-100mu m. The invention also provides a method for removing sulfide from the organic solvent. The method comprises the following steps: 1) adding the adsorbent according to any claim of claims 1-3 into the organic solvent; 2) stirring; 3) separating the adsorbent from the organic solvent. The desulfurizing agent used in the method is a non-load type desulfurizing agent; the copper compound powder and / or silver compound powder is directly used for preparing the adsorbent; the preparation is simple and the cost is low; the adsorbent and the method provided by the invention can be used for effectively removing the sulfide from the organic solvent, and the sulphur content can be reduced to below 10ppmw; the sulphur capacity of the adsorbent is higher than that of the traditional load type adsorbent.

Description

technical field [0001] The invention relates to the field of petrochemical industry, more particularly, to a gasoline desulfurizer and a desulfurization method. Background technique [0002] As the environmental protection law restricts the emission of sulfur content more and more strictly, how to effectively remove sulfur compounds in fuel oil such as gasoline has always attracted people's attention. China has implemented the "National V" standard in some cities since December 18, 2013, and it is expected that the "National V (≤10ppmw)" standard will be implemented nationwide from January 1, 2018. The traditional hydrodesulfurization method can effectively remove some simple sulfur-containing compounds, such as mercaptans, sulfides, etc., for some difficult-to-remove complex compounds (such as benzothiophene, dibenzothiophene and their derivatives) The removal of methionine often leads to a large loss of octane number, and the operating cost is relatively high, and the con...

AI Technical Summary

Problems solved by technology

The adsorbent can achieve a removal rate of 99.61% in the static adsorption experiment on mercaptans, but its preparation process is cumbersome; patent CN102000544 discloses an adsorbent for gasoline desulfurization and its preparation method and its application in gasoline desulfurization The application of the adsorbent is made of cuprous chloride and aluminum doped mesoporous silica molecular sieves and fully ground, then roasted under an inert atmosphere. The adsorbent uses the adsorption method to simulate the thiophene compound in gasoline 500ppm) removal has a good effect, but the adsorption sulfur capacity is not high (7.36mg S / g);