Fine desulfurizer used for removing thiol from liquid hydrocarbon at normal temperature, preparation method thereof and application method thereof

Abstract

The invention discloses a fine desulfurizer used for removing thiol from liquid hydrocarbon at normal temperature, a preparation method thereof and an application method thereof. The fine desulfurizer is prepared by blending powder of one to three compounds of copper oxide, zinc oxide, lead hydroxide, nickel oxide, magnesium hydroxide, potassium hydroxide, vanadium pentoxide, manganese dioxide and cobalt oxide with aluminum hydroxide and adhesive CMC, and then extruding the mixture into strips, wherein based on mass percentage, the one to three compounds (in the form of oxide) accounts for 5 to 30 percent, the aluminum hydroxide accounts for 60 to 85 percent and the CMC accounts for 10 percent. The preparation method for the fine desulfurizer comprises the following steps of: blending the powder of one to three compounds, the aluminum hydroxide and adhesive according to the formula, extruding the mixture into strips, drying the strips for 2 to 4 hours at the temperature of 120 DEG C, and baking the mixture for over 3 hours in an air atmosphere at the temperature of 300 to 500 DEG C to prepare the fine desulfurizer. The fine desulfurizer can be widely used for removing the thiol from the liquid hydrocarbon, such as LPG, a solvent oil, a naphtha and the like, can remove the thiol from the liquid hydrocarbon at the temperature of 10 DEG C below zero to 100 DEG C and at an airspeed of 0.01 to 6h-1; the removal rate is over 90 percent; the treated liquid hydrocarbon is guaranteed to meet requirements; and sulfur capacity of the fine desulfurizer is 2 to 6 weight percent.

Description

Technical field: [0001] The invention relates to a refined desulfurizer for removing mercaptans in liquid hydrocarbons at normal temperature and a preparation and application method thereof. Background technique: [0002] Liquid hydrocarbons often contain different amounts of mercaptans, and the presence of mercaptans will lead to rapid deactivation of the catalyst in the subsequent stage, resulting in unqualified product quality, resulting in low benefits; mercaptans are active and easy to oxidize, and when there are mercaptans in liquid hydrocarbons, It not only produces foul odor, but also leads to the decline of oil storage stability and quality; mercaptans are weakly acidic, and mercaptans in oil are corrosive to production, storage equipment and pipelines, which not only cause losses caused by corrosion At the same time, there are safety hazards in production, storage and long-distance transportation; mercaptans are extremely harmful to humans and the environment. Afte...

AI Technical Summary

Problems solved by technology

[0010] (2) Although naphtha goes through the Co-Mo hydroconversion catalyst string ZnO process to remove the total sulfur in the raw material before entering the platinum reforming catalyst, but due to the complex sulfides in the raw material or the Co-Mo hydroconversion catalyst The conversion effect is not good, so the export still contains a small amount of mercaptan and hydrogen sulfide (does not contain other sulfides), but the user is unwilling to replace the Co-Mo hydroconversion catalyst (high cost) from economic considerations, and the platinum reforming catalyst is of great benefit to Imported total sulfur requirements are very strict

[0011] According to the current technology, in the first case, the Co-Mo hydroconversion catalyst string ZnO process must also be used, so the investment and operation costs are very high, and the manufacturer cannot bear it. In the second case, the Co-Mo hydroconversion catalyst must be replaced, and the same High expense