METHOD FOR THE PREPARATION OF ALKYL SULFONIC ACID
Patent Information
- Application Number
- DE602023021404
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2022-02-18
- Filing Date
- 2023-02-15
- Publication Date
- 2026-08-19
- Estimated Expiration
- 2043-02-15
AI Technical Summary
Existing processes for producing alkyl sulfonic acid using dialkyl disulfide and nitric acid result in significant formation of sulfuric acid by-products, leading to large purge streams and reduced yield due to separation limitations.
The process involves feeding dialkyl disulfide into a reactor with a hydraulic diameter of less than 5 mm and an inlet velocity of at least 0.6 m/s, preferably through multiple orifices, to minimize the formation of sulfuric acid by-products, using reactors with varying degrees of back-mixing and additional mixing devices to control gas flow.
This approach reduces the formation of sulfuric acid, facilitating easier purification and increasing the yield of alkyl sulfonic acid by minimizing the purge stream and maintaining high product quality.