A method for oxidative desulfurization of oil-complex iron emulsion
A technology for oxidative desulfurization and iron complexation, applied in chemical instruments and methods, separation methods, and sulfur preparation/purification, etc., can solve the problems of tower blockage and foaming that are not completely solved, and achieve no secondary pollution, source Wide range of effects to improve reaction efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
preparation example Construction
[0043] The preparation method of oil-in-water type oil-complex iron emulsion is as follows:
[0044]Based on the quality of the oil-complexed iron emulsion, add 30wt% catalytically cracked diesel oil to the reactor, and add 2wt% emulsifier, wherein the emulsifier type is a composite emulsifier of Span80 and AEO-3 (mass ratio is 48: 52), keep the temperature at 30°C for 5 minutes, then stir at a stirring speed of 300-500r / min, add 68wt% complex iron aqueous solution dropwise, and stir at 30°C for 30 minutes to prepare the oil-in-water oil-complex iron emulsion .
[0045] The present invention is achieved in such a way:
[0046] Contains H 2 S gas 1 enters absorber 2 to contact with oil-complexed iron emulsion, H 2 S is oxidized by complex iron to sulfur, and sulfur dissolves in the surrounding oil phase, releasing H 2 The purified gas 3 of S is discharged from the top of the absorber 2. After the oil-complexed iron emulsion is absorbed and saturated, the oil-complexed iron ...
Embodiment 1
[0050] Removal of H 2 The reaction conditions at S are as follows: In the absorber: the temperature is 50°C, the reaction pressure is 0.5MPa, and the 2 The volume ratio of the hourly flow rate of S gas to the oil-complex iron emulsion is 6:1; in the solid-liquid separator: the temperature for cooling and separating sulfur is 10°C.
[0051] Composition of hydrogen sulfide-containing gas (volume): hydrogen sulfide content is 0.62%, SO 2 COS is 0.01%, and COS is 0.01%. The oil-complexed iron emulsion includes: catalytic diesel oil with a distillation range of 240~260°C, and the Fe ion concentration is 0.06mol / L. Oxidative desulfurization of oil-complexed iron emulsion to purify H in gas 2 S concentration is 10mg / m 3 , the purity of recovered sulfur is 98.5%, demulsification and oil-water separation are carried out every 2 hours, and the absorber is switched at the same time.
Embodiment 2
[0053] Removal of H 2 The reaction conditions at S are as follows: In the absorber: the temperature is 60°C, the reaction pressure is 1MPa, and the 2 The volume ratio of the hourly flow rate of S gas to the oil-complex iron emulsion is 3:1; in the solid-liquid separator: the temperature for cooling and separating sulfur is 5°C.
[0054] Composition of hydrogen sulfide-containing gas (volume): hydrogen sulfide content is 0.18%, SO 2 COS is 0.1%, and COS is 0.03%. The oil-complexed iron emulsion includes: catalytic diesel oil with a distillation range of 260~280°C, and the concentration of Fe ions is 0.08mol / L. After oxidative desulfurization of the desulfurization liquid, the H in the gas is purified 2 S concentration is 6mg / m 3 , the purity of the recovered sulfur is 99.5%, demulsification and oil-water separation are carried out every 3 hours, and the absorber is switched at the same time.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com