High pressure and high temperature reaction system

DETAILED DESCRIPTION Embodiments of an apparatus and methods for mitigation of corrosion in a high pressure and high temperature reaction system that can be used for oxidative waste treatment under supercritical water conditions are described.
In an embodiment of a system and method for oxidative waste treatment, a first fluid may be transported through a first conduit at a first flow rate and at a first temperature.
Construction of the first conduit may be such that the first conduit may have an end within the interior of the second conduit, and is in fluid communication with the second conduit.
Fluid communication between the first conduit and second conduit may allow the first fluid to be injected into the second fluid.
Transportation of the second fluid may occur in a second conduit at a second temperature and a second flow rate.
The first fluid may be corrosive in a corrosive temperature range and the corrosive temperature range may exclude the second temperature.
The first and second fluids may be mixed in the second conduit at a mixing length downstream of the end of the first conduit.
The second conduit may include a tube or liner having at least an inner surface area made of a corrosion resistant material and extending along the mixing length to inhibit corrosion of the second conduit.
As used herein, "mixing length" is the distance necessary for a mixed fluid to reach a steady state temperature.
The first and second temperatures and the first and second flow rates may be selected such that the mixed fluids downstream of the mixing length are at a temperature that is substantially non-corrosive for the first fluid.
In an embodiment, a high pressure and high temperature reaction system suitable for oxidative waste treatment may include a first and a second conduit adapted to transport a first and a second fluid.
The second conduit may be adapted to transport the second fluid at a second temperature and at a second flow rate.
Transportation of the first fluid in the first conduit may occur at a first flow rate