Method for continuous thermal hydrolysis with recirculation of recovered steam
US10266422B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2014 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Aug 15, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/30
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention pertains to a method for the continuous thermal hydrolysis of sludge to be treated, containing organic matter, said method comprising the steps of simultaneously carrying out the injection of recovered steam into said sludge and mixing said sludge with said recovered steam by means of a primary dynamic injector-mixer so as to obtain a primary uniform mixture; simultaneously carrying out the injection of fresh steam into said primary uniform mixture and mixing said primary uniform mixture with said fresh steam by means of a secondary dynamic injector-mixer so as to obtain a secondary uniform mixture of sludge; conveying said secondary uniform mixture towards a tube reactor under pressure and prompting an essentially plug-type flow of this secondary uniform mixture into said reactor for a residence time that is sufficient and at a temperature that is sufficient to enable the thermal hydrolysis of the organic matter present in this secondary uniform mixture; producing said recovery steam within means for the production of recovered steam from said secondary uniform mixture obtained at exit from said tubular reactor; cooling said secondary uniform mixture when it exits sa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.