Method and system for treating sulfur dioxide containing stream by catalytic oxidation and acid aqueous absorption
US-2026042058-A1 · Feb 12, 2026 · US
Sulphuric acid production with recycle of desulphurized gas
US9045342B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9045342-B2 |
| Application number | US-201214343092-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 27, 2012 |
| Priority date | Sep 29, 2011 |
| Publication date | Jun 2, 2015 |
| Grant date | Jun 2, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The invention relates to a process for oxidation of SO 2 to SO 3 comprising the steps of (a) directing a stream of feed gas comprising SO 2 and O 2 to a catalytically active material, (b) oxidizing an amount of said SO 2 in said process gas to SO 3 in the presence of the catalytically active material, providing a first oxidized process gas, (c) reacting SO 3 with water, (d) condensing H 2 SO 4 , (e) withdrawing a first desulphurized process gas and a first stream of sulphuric acid, (f) from the desulphurized process gas withdrawing a recycle stream of desulphurized process gas, wherein the recycle stream is added to said stream of feed gas or said first oxidized process gas with the associated benefit of reducing the molar flow of process gas downstream withdrawal of the recycle stream and upstream the mixing point.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for oxidation of SO 2 to SO 3 comprising the steps of (a) directing a stream of feed gas comprising SO 2 and O 2 , to a catalytically active material; (b) oxidizing an amount of said SO 2 in said process gas to SO 3 in the presence of at least 0.1% water and the catalytically active material, thereby providing a first oxidized process gas; (c) reacting SO 3 with water in a condensing column; (d) condensing H 2 SO 4 in a condenser…
Assignees
Inventors
Classifications
Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
Operations & Transport · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9045342B2 cover?
- The invention relates to a process for oxidation of SO 2 to SO 3 comprising the steps of (a) directing a stream of feed gas comprising SO 2 and O 2 to a catalytically active material, (b) oxidizing an amount of said SO 2 in said process gas to SO 3 in the presence of the catalytically active material, providing a first oxidized process gas, (c) reacting SO 3 with water, (d) condensing H …
- Who is the assignee on this patent?
- Haldor Topsoe As, Haldor Topsoe As
- What technology area does this patent fall under?
- Primary CPC classification C01B17/765. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 02 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).