Gasification reaction

Research shows that the impact zone is the area within the gasifier where mixing between different fluid streams is most intense, and it enhances the atomization and mixing processes in the gasifier in the following ways. (1) The relative movement of oxygen and coal slurry within the impact zone generates shear force, which promotes further fragmentation of the coal slurry droplets and improves the atomization process. (2) Four jet streams combine through collision to form a combined jet stream, whose axial velocity decays more rapidly; as a result, the residence time distribution of the fluid within the furnace improves, that is, the \"short-circuiting\" phenomenon is suppressed. (3) The particle oscillation phenomenon occurring within the impact zone results in a relatively longer residence time for the particles. (4) The velocity fluctuations are severe within the impact zone, and the turbulence intensity is at its highest, indicating the best mixing effect. 1.2 Gasification reaction mechanism: After water-coal slurry and oxygen enter the gasification chamber, six physical and chemical processes take place in sequence: atomization, heat transfer, evaporation, removal of volatiles, combustion, and gasification. The first five processes occur at a relatively fast rate and are essentially completed in the five flow pattern regions numbered 1, 2, 3, 4, and 5. While the gasification reaction takes place in these five regions as well, it primarily occurs in the tubular flow region. The gasification process of coal slurry particles in the gasifier involves steps such as turbulent dispersion of the particles, oscillatory motion, convective heating, radiative heating, evaporation of the coal slurry and release of volatiles from the particles, gas-phase reactions of the volatile products, multiphase reactions of the coal char, and the formation of ash and slag.

This different furnace has a different flow field pattern; the second floor mentioned four nozzles.

In my opinion, this is determined by factors such as the slurry concentration, type of coal, oxygen purity, oxygen pressure and flow rate, as well as the temperature, pressure, and load of the gasification furnace. I have here a document analyzing the gasification process in Texaco gasification furnaces, downloaded from VIP; however, uploading it is prohibited. So if you’re interested, you can contact me via text message and provide the address of this post along with your email address