Process for automated regulation of sulfur production units
US3933992A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1974 |
| Grant date | Jan 20, 1976 |
| Priority date | — |
| Expiry date | Apr 8, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/05
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for automated regulation of a unit producing sulphur by oxidation of hydrogen sulphide, in which the flow of gas carrying oxygen into the unit is regulated so as to keep an operating parameter, based on measurement of the sulphurous compound of the residual gases, level with a reference value. It is characterized by the fact that the control signal, used to regulate the flow of gas containing oxygen at the unit inlet, is a combination of a signal based on measurements taken at the inlet, and representing the theoretical flow of this gas needed to keep the operating parameter at its reference level and another signal representing the correction needed in this flow to adjust the instantaneous value of the parameter to the reference level. This process allow better control of the sulphur unit, with increased efficiency and reduced atmospheric pollution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.