Operating Principle

The high-efficiency nozzles adopting two-stage Laval nozzle technology can significantly enhance the centrifugal force of liquid sulfur. The front end of the Laval nozzle is designed to gradually contract into a narrow throat and then gradually expand after the throat. After being accelerated through the first-stage Laval nozzle, liquid sulfur enters the second-stage nozzle, where it is accelerated again and is ejected from the nozzle after passing through the narrow throat of the second stage. This structural design enables the liquid sulfur to effectively convert static pressure energy into dynamic pressure energy under the effect of changes in the nozzle cross-sectional area, thereby endowing the liquid sulfur with the power for high-speed jetting and atomization.

Liquid sulfur is accelerated through the nozzle flow channel and enters the atomization zone. Under the action of shear force and pressure difference, it is rapidly broken into fine particles, forming a uniform conical mist torch. During the atomization process, the fluid rotates at high speed through a precisely designed swirl chamber, enhancing the centrifugal atomization effect, further refining the atomized particles, and increasing the surface area of the combustion reaction. Meanwhile, the geometric matching between the swirl chamber and the nozzle has been optimized through multiphase flow simulation to ensure that the atomized particle size distribution is concentrated and stable. Under high-temperature conditions, the microstructure of the material remains dense and uniform, inhibiting the penetration of sulfur vapor and the propagation of thermal fatigue cracks.

Product Feature

Product Advantage

Nozzle with Hastelloy alloy and Stellite alloy wear resistance to liquid sulfur impurities and high temperature dilute sulphuric acid corrosion. Under continuous working conditions of 1100℃, the streamlined flow channel design reduces the retention zone and avoids local overheating and coking.

Rotating multilayer solid fog torch further optimize combustion field distribution, effective control of intense burning liquid sulfur, multiple cooperating laminar burning, achieve low nitrogen combustion, significantly reduce the Nx generated. Reduce Nx emission pollutants.

The absence of liquid sulfur droplets in the high negative pressure zone at the nozzle outlet ensures complete atomization and gasification of the combustion, preventing unburned liquid droplets from flushing the furnace wall and avoiding the accumulation of liquid sulfur and non-steady-state combustion inside the furnace. The atomization and combustion processes are highly coordinated, achieving nearly zero residual liquid sulfur in the sulfur-burning furnace.

The spray holes are concentric with the liquid sulfur pipe to ensure a symmetrical and stable flow field, avoiding uneven spraying and wear. The inner wall of the mirror is designed with a precise streamlined structure. After parking, there is no accumulation of sulfur in the spray gun, effectively preventing blockage when restarting. Far superior to industry standards.

Technical Specification

High-efficiency nozzle selection data table