Method for removing sulfur-containing compounds in C3 fraction of cracking gas prepared from crude oil

By using alkali metal or alkaline earth metal desulfurizers loaded on Al2O3-Al(OH)3-Ag-Ag2O-Re-ReOx, the synergistic effect of Ag, Ag2O, Re, and ReOx is utilized to solve the problem of efficient removal of sulfur compounds from the C3 fraction of crude oil cracked gas, achieving low-temperature desulfurization, energy saving, and environmentally friendly regeneration.

CN122060520APending Publication Date: 2026-05-19CHINA PETROLEUM & CHEMICAL CORP +1
1 Cites 0 Cited by

Patent Information

Application Number
CN202411651978.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-18
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Existing technologies struggle to efficiently remove sulfur compounds from the C3 fraction of crude oil cracked gas without triggering additional reactions. Furthermore, traditional desulfurizing agents have short service life, high replacement costs, and their waste disposal causes environmental pollution.

Method used

Alkali metal or alkaline earth metal desulfurizers loaded on Al2O3-Al(OH)3-Ag-Ag2O-Re-ReOx can achieve efficient removal of sulfur compounds at lower temperatures through the synergistic effect of elemental Ag, Ag2O, elemental Re and ReOx, and can be repeatedly regenerated and reused.

Benefits of technology

This method efficiently removes low-carbon sulfides and mercaptans from C3 fractions under low-temperature conditions, avoiding additional reactions, saving energy, and featuring a simple process. The desulfurizing agent can be repeatedly regenerated, ensuring long-term stable operation and preventing environmental pollution.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses a method for removing sulfur-containing compounds in a crude oil-prepared cracked gas C3 fraction. The method comprises the following steps: contacting the crude oil-prepared cracked gas C3 fraction with a supported desulfurizer, wherein the load type desulfurizing agent comprises a carrier and a main active component loaded on the carrier; the main active component comprises alkali metal and / or alkaline earth metal; the carrier comprises elementary substances Ag, Ag2O, elementary substances Re and ReOx; reOx is a mixture of a plurality of Re oxides, x = n / 2, and n is 4, 6 or 7; the molar content of the elementary substance Re accounts for 30-45% of the total molar weight of Re in the carrier. The method provided by the invention can effectively remove low-carbon thioether and / or low-carbon mercaptan in the C3 fraction of the crude oil-prepared pyrolysis gas, has the advantages of low removal temperature, simple process, no additional reaction, no influence on downstream hydrogenation and separation processes, and energy consumption saving, and the desulfurizer can be repeatedly regenerated and used, and has long-period stable operation capability.
Need to check novelty before this filing date? Find Prior Art