Desulfurization adsorbent for gasoline

Abstract

The invention discloses a desulfurization adsorbent for gasoline. The desulfurization adsorbent is prepared from, by weight, 27-35 parts of white clay, 3-7 parts of strontium acetate, 13-21 parts of polyving akohol and 5-13 parts of ethylene glycol. According to the desulfurization adsorbent for the gasoline, the white clay serves as a row material, after the white clay is mixed with the strontium acetate, then after the processing of the polyving akohol, the ethylene glycol and the like, the desulfurization adsorbent is prepared, the sulfur capacity is large, the selection for sulfur is good, the depth of desulfurization is high, and sulfur concentration after the desulfurization can reach 1 ppmw; besides, the service life is long and the adsorbent is environmentally friendly. The desulfurization adsorbent for the gasoline is simple in preparation process, easy to operate and control, stable in performance, low in production cost and suitable for industrial production. According to the desulfurization adsorbent, when the gasoline is desulfurized, the process operation conditions are mild, the desulfurization can be carried out at a normal pressure and a lower temperature, and therefore the energy consumption is saved, and the operation cost is reduced.

Description

technical field [0001] The invention relates to the technical field of desulfurization materials, in particular to a desulfurization adsorbent for gasoline. Background technique [0002] About 70% of my country's commercial gasoline comes from the heavy oil catalytic cracking process. Since heavy oil raw materials contain a large amount of sulfur, nitrogen, oxygen heteroatom compounds and colloidal asphaltenes, catalytic cracking gasoline not only has a high sulfur content, but also contains a large amount of olefin components , More than 90% of the sulfur in commercial gasoline comes from catalytic cracking gasoline, which makes the sulfur content of gasoline in my country far exceed that in foreign gasoline. Therefore, how to reduce the sulfur content in FCC gasoline is the key to reducing the sulfur content in commercial gasoline. In particular, on January 1, 2018, the National V gasoline quality standard that is about to be implemented nationwide stipulates that the sulf...

AI Technical Summary

Problems solved by technology

However, the desulfurizers in the prior art generally have the following deficiencies: 1. The desulfurization depth is not enough, and it is difficult to desulfurize to below 5 ppmw; 2. The specific surface area of ​​the adsorbent is low, and the adsorption capacity of sulfur is relatively limited; 3. The operating conditions of the desulfurization process are harsh. And the energy consumption is high, the operation cost is high; 4. The desulfurization process is not friendly to the environment; 5. The selectivity of the desulfurizer is low and the service life is short

In addition, most of the existing desulfurizers use activated carbon, ZSM-5 and other materials, and there is very little information about the use of kaolin

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