1. Overview
Supercritical water oxidation (SCWO) refers to the reaction of dissolved oxygen and organic waste in supercritical water to generate non-toxic substances such as CO2, H2O and N2. Water is the most widely used and most important solvent in nature. It is non-toxic and does not need to be separated from many reaction products.
The critical temperature of water is 374.3OC and the critical pressure is 22.05MPa. Above this temperature and pressure is the critical region. Supercritical water reaction has strong solubility, high compressibility and easy separation. Since many materials to be treated are originally aqueous solutions, it is not necessary to separate water from the final product in many cases, making supercritical water a potential reaction medium.
Supercritical water oxidation method is the most typical application example of supercritical water reaction process. In the supercritical water oxidation process, organic matter, air (or oxygen) and water are completely miscible at a pressure of 25MPa and a temperature above 400 OC. Under these conditions, organic matter starts to oxidize spontaneously, and the generated reaction heat increases the temperature to 550-650 OC in a reaction residence time of less than one minute, more than 99.99% of the organics are rapidly oxidized to CO2, H2O and N2, the heteroatoms are also oxidized, and they are spontaneously precipitated as salts from the supercritical aqueous solution by adding a base to the feed.
Main technical parameters of 2.
1. Maximum working pressure 50MPa
2. Working temperature 600 ℃
3. Voltage 220V, frequency 50HZ, power 1.5KW
4. Material tank volume 1000ml, dissolved oxygen tank volume 1000ml
5. Double plunger pump 2L/50MPa