In flue gas desulfurization equipment by lime or gypsum methods, some lime slurry is sprayed by a spray nozzle in a process of removing sulfur dioxide from flue gas. Lime slurry is a mixed fluid of grinded lime and water. The lime slurry spray makes the spray nozzle wear, which deteriorates the nozzle performance. Specifically, the spray nozzle shape deforming by some wear changes the spray patterns. The original nozzle performance would not be shown.

Also, a highly durability is required in the spray nozzles inside an exhaust gas cooling tower since the temperature inside the tower is more than 500 degrees Celsius.

In regular spray nozzles, some wear is generated in a shorter span, which makes the nozzle replacing more frequent. This would end up increasing the running costs. In addition to that, inefficient sulfur dioxide removal could be concern due to the spray nozzle performance deterioration.

In this case, to solve this issue, one of our customers was looking for a spray nozzle with long-life extension and highly durability. They contacted us to since we were an expertise to design customized nozzles.

The regular spray nozzles come with a Hastelloy base nozzle tip. However, in some lime slurry spray and 500 degree Celsius conditions, the durability was not effective. Because of that, we proposed switching to a spray nozzle tip with cemented carbide material KN20.

By switching from standard material SUS316L to KN20, we were able to improve the wear and heat resistance, keeping the same performance.

Providing the customized nozzle with KN20 enabled the spray nozzle to be replaced less frequently, which led to lowering the running costs. Also, the customized nozzle's feature is wear and heat resistance. This particular specification can makes the spray nozzle tip wear less frequently even in in 500 degree Celsius, and comes up with a stable sulfur dioxide removal.
As this case shows, we are able to design spray nozzles including some prototypes and test the nozzles to meet customer's requests. We are surely able to propose some spray nozzles with some extra benefits.
Additionally, we are not only a spray nozzle manufacturer but also cemented carbide so that we have various kinds of cemented carbide available. Meeting your requests including specification environments, we can select an optimal spray nozzle with cemented carbide.
If you have any issues such as frequent nozzle replacing due to the low durability or performance failures due to some wear, please contact us. We are an expertise and have a lot of experiences in spray nozzles with cemented carbide. We will be able to propose an optimal spray nozzle with cemented carbide.