Method for making chelating base product used in water-based systems
US10093563B2 · kind B2 · utility
4Cited by
20References
7Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 16, 2016 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Jul 13, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/04
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A base product fluid is produced by adding anhydrous liquid ammonia and a first portion of sulfuric acid to water flowing in a process line to form a mixed fluid. The mixed fluid may be cooled by flowing the mixed fluid through a heat exchanger. A second portion of sulfuric acid may be added to the mixed fluid to form the base product fluid. The second portion of sulfuric acid may be greater, by weight, than the first portion of sulfuric acid. The base product fluid may include a molecular compound that is a chelating compound. The molecular compound may have the formula: ((NH4)2SO4)a.(H2SO4)b.(H2O)c.(NH4HSO4)x.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.