Desulphurization adsorbent regeneration method, and sulfur containing hydrocarbon adsorption desulphurization method and device

Abstract

The invention discloses a desulphurization adsorbent regeneration method, and a sulfur containing hydrocarbon adsorption desulphurization method and a device. The desulphurization adsorbent regeneration method comprises following steps: S1, under coke condensation conditions, in the presence of gas stripping gas, coke on the surface of a reagent to be treated is subjected to condensation reactionso as to obtain a decoked reagent; S2, under regeneration conditions, the decoked reagent is contacted with a regeneration gas so as to obtain a regenerated reagent. According to the desulphurizationadsorbent regeneration method, regeneration pre-treatment of the reagent to be treated is adopted, the reagent is subjected to pre-treatment under coke condensation conditions, so that compounds suchas hydrogen gas and methane are generated via condensation reaction of coke on the surface of the reagent, hydrogen gas and methane are removed using gas stripping gas, the hydrogen content of the reagent is reduced, the amount of water generated in regeneration process is reduced, generation of zinc metasilicate in subsequent regeneration process is reduced effectively, the regenerated reagent activity and strength are improved at a certain degree, and adsorbent consumption is reduced.

Description

technical field [0001] The invention relates to the field of sulfur-containing hydrocarbon desulfurization, in particular to a desulfurization adsorbent regeneration method, a sulfur-containing hydrocarbon adsorption desulfurization method and a device. Background technique [0002] In order to protect the environment, countries around the world have set stricter and stricter standards for the sulfur content of gasoline. Since 2017, my country will fully implement the gasoline specifications of the National V emission standard (that is, the mass fraction of sulfur content is less than 10 μg / g), which puts higher requirements on the gasoline desulfurization process. Adsorption desulfurization (S-Zorb) technology is a new technology developed by ConocoPhillips Petroleum Company of the United States for the production of ultra-low sulfur clean gasoline, which can economically reduce the sulfur content in gasoline to 10 μg / g or lower, minimizing Under the premise of octane numb...

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Problems solved by technology

[0004] However, with the continuous cycle regeneration of S-Zorb adsorbent, this kind of S-Zorb adsorbent tends to suffer from the problems of fragmentation (decreased strength) and decreased activity, which in turn leads to a decrease in desulfurization efficiency and an increase in agent consumption.

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