Process for disoxidating gas or water
US4220528A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1978 |
| Grant date | Sep 2, 1980 |
| Priority date | — |
| Expiry date | Sep 29, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for disoxidating a gas which comprises contacting a gas being inert to hydrazines with a solution containing (A) at least one of hydrazines and (B) at least one of (i) quinones having a first half-wave potential of not more than -650 mV against a saturated calomel electrode at 25.degree. C. in acetonitrile in the case of employing 0.1 N tetraethylammonium perchlorate as an indicating electrolyte, and (ii) hydroquinones being the reduced forms of the foregoing quinones, and if desired, (C) an alkali agent. According to the process, the oxygen in a gas is removed in a high efficiency at a low cost without disadvantages such as the accumulation of nonvolatile materials and the limitation in the capacity of absorbing oxygen. A process for disoxidating water which comprises the steps of (I) disoxidating a gas being inert to hydrazines and water by contacting the gas with a solution containing (A) at least one of hydrazines, (B) at least one of the above-mentioned quinones and hydroquinones, and (C) an alkali agent, (II) contacting the disoxidated gas as it is or after purified with a water containing a dissolved oxygen to remove the large portion of the oxygen from the water, …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.