Process and plant for thermal hydrolysis of sludge
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United States of America
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Jan 7, 2020
Grant Date -
Nov 16, 2017
app pub date -
Oct 30, 2015
filing date -
Oct 30, 2015
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Abstract
Method and installation of thermal hydrolysis of sludges implementing a group of thermal hydrolysis reactors (71,72,73,74) characterized in that it comprises successions of cycles, each of these successions of cycles being dedicated to one of said thermal hydrolysis reactors, each cycle comprising: a step a) for conveying a batch of non-preheated sludges to be treated into a thermal hydrolysis reactor (71,72,73,74), said step for conveying comprising the continuous passage of the sludges of said batch of sludges into a dynamic mixer (3) into which recovery steam is injected; a step b) for injecting live steam into said thermal hydrolysis reactor (71,72,73,74) containing said batch of sludges so as to increase the temperature and the pressure prevailing in this reactor; a step c) of thermal hydrolysis of the batch of sludges in the thermal hydrolysis reactor; a step d) for emptying the content of the batch of hydrolyzed sludges of said thermal hydrolysis reactor towards a recovery vessel (13), and for concomitant de-pressurizing of said reactor prompting the emission of recovery steam from the recovery vessel (13); the cycle starting points of the successions of cycles being staggered in time so that the steps a) of a succession of cycles are concomitant with the steps d) of another succession of cycles, the recovery steam emitted during the steps d) of a succession of cycles constituting the recovery steam injected during the steps a) of another succession of cycles.
First Claim
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- VEOLIA WATER SOLUTIONS & TECHNOLOGIES SUPPORT
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Chauzy, Julien | Antony, FR | 8 | 44 |
Crampon, Cedric | Champigny-sur-Marne, FR | 5 | 9 |
Djafer, Malik | Boulogne-Billancourt, FR | 12 | 32 |
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