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High Pressure Research
An International Journal
Volume 20, 2001 - Issue 1-6
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Original Articles

A novel determination of activation quantities and reaction order(s) for the hydrothermal destruction and its applications

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Pages 457-465 | Received 10 Jan 2000, Accepted 25 Feb 2000, Published online: 19 Aug 2006
 

Abstract

A novel determination method of activation quantities and reaction order(s) of hydro-thermal reactions was developed in order to achieve economically, easily and speedily research and development of new hydrothermal plants. This method is called the NIT method (abbreviation of ‘Nonisothemal method’) in the case of a batch reactor and the F-NIT method (abbreviation of ‘nonisothermal method for flow reactor’) in the case of a plugged flow reactor. The main merit of the NIT method (or the F-NIT method) is to give access to the determination of activation quantities and/or reaction orders by measuring the changes in amount of chemical species under nonisothermal conditions.

After summary of the recently published NIT method, the newly F-NIT method is described briefly. Then the two types of hydrothermal fluids (hydrothermal steam and supercritical/subcritical water) are applied to the destruction of phenol under nonisothermal conditions. The activation quantities can be obtained at once by use of these methods and are compared with the reported values in the scWO.

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