Adsorbent used for desulfuration-deodorization of solvent oil and preparation thereof

Abstract

The invention relates to an adsorbent for desulfurization and deordorization of solvent oil and a preparation method thereof. The adsorbent consists of active metals in reduced state VII family, IB family and IIB family and the active metal oxide containing zinc oxide. The adsorbent is prepared by methods such as the temper, the impregnation, the sedimentation and deposition, and coprecipitation, etc. and can adsorb all the odorous thio alcohol and the odorous thio ether in oil products, thereby reaching the intension of the deordorization; moreover, the adsorbent can also remove thiophene organic sulfur compounds in the solvent oil such as the thiophene, the benzothiophene and the dibenzanthracene thiophene, etc. which obviously lowers the sulfur content of the oil products and acquires the solvent oil with extremely low sulfur content. The adsorbent has good desulfurization and deordorization effects on the light solvent oil such as 110<#>, 130<#> and 150<#>, etc. as well as the heavy solvent oil such as 200<#> and 260<#>, etc., thereby the adsorbent is particularly suitable for the heavy solvent oil of which the desulfurization and the deordorization are hard to be done by conventional methods; moreover, the adsorbent also has the advantages of simple preparation method, large sulfur capacity and convenient regeneration.

Description

technical field [0001] The invention relates to an adsorbent for desulfurization and deodorization of solvent oil and a preparation method thereof. Background technique [0002] The deodorization of light oil is an essential process in petrochemical industry. Its purpose is to remove or convert the foul-smelling organic sulfur compounds into odorless substances in oil products to meet production needs and environmental protection requirements. With the exploitation of oil, the oil reserves on the earth are getting less and less. In recent years, with the heavy and inferior quality of crude oil and the improvement of crude oil processing depth, the content of mercaptans and sulfides in light oil products in refineries is relatively high, and the molecular structure is more complex, which makes the deodorization of oil products more difficult. difficulty. For this reason, refineries at home and abroad are actively exploring new technologies to improve the deodorization effec...

AI Technical Summary

Problems solved by technology

The preparation method of the impregnation solution disclosed in U.S. Patent No. 4,913,802 is to add cobalt phthalocyanine compounds in 2% ammonia water and 1% quaternary ammonium alkali mixed solution, although the conversion of cobalt phthalocyanine compounds to inactive components can be slowed down, However, the bed catalyst prepared with this impregnation solution is easy to lose during the deodorization process, resulting in a short service life of the bed

The above-mentioned methods can only remove low-molecular-weight mercaptans and thioethers (with carbon numbers less than 6) contained in light solvent oils, but cannot remove high-molecular-weight mercaptans, thioethers, and thiophenes that are relatively high in heavy solvent oils. , benzothiophene, dibenzothiophene and other thiophene organic sulfides

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