A recently developed chemical solution enhances limestone reactivity and SO2 removal in wet air scrubbers used for air treatment processes. This scrubber technology reduces slurry recirculation, providing savings in operational and maintenance costs.
It is important to mention that the chemical solution requires a reduced number of recycle pumps. Therefore, the backpressure of the wet scrubber is lowered, resulting in decreased booster and fan loading. The opportunity to reduce the electrical load of scrubber systems results in an improved heat rate.
In air treatment at limestone facilities, the limestone comprises over 95% calcium carbonate (CaCO3) content. Additionally, SO2 in the fluid gas changes to the liquid form during the scrubbing process. The operating principle of most wet air scrubbers for limestone plants is based on the air that passes into the reaction tank at the bottom of the absorber tower to transform the hemihydrate to gypsum. Thus, gypsum can be easily removed and used as a construction material.
The effectiveness of air treatment offered by wet scrubbers relies on various factors:
- SO2 amount in the flue gas;
- Scrubber system’s load;
- The liquid-to-gas ratio in the wet air scrubber;
- Limestone reactivity and oxidation air flow rates.
To be more precise, wet scrubbers have numerous advantages, which can be increased even more by enlarging SO2 absorption and limestone reactivity. One more benefit of scrubbing includes a decrease in rotating load leading to corresponding operating and maintenance costs.
Another advantage of scrubbers involves limestone selection. Most industries don’t have access to high-purity limestones, thus there is a demand for additional raise of the reactions. A traditional technique is a dibasic acid (DBA) addition to wet air scrubber process streams.
However, a new scrubber technology has been developed to improve greatly the used chemistry. The new scrubbing solution provides a higher buffering ability than conventional liquids. This solution offers a boost in efficiency providing 97–98% removal of particulate pollutants by wet air scrubbers.
Finally, the innovative scrubbing solution is a promising technique that significantly improves air treatment efficiency. These wet air scrubbers will be highly beneficial at facilities aiming to enhance efficiency and reduce parasitic power load. Thus technology may also enable a switch to a more affordable limestone manufacturing.
If you are looking for the best air treatment device to improve air quality, Redwood Technology offers a cutting-edge type of wet scrubber – a Multi-Vortex wet air scrubber.
Redwood technology is a fast-growing vendor of wet air scrubbers. The multi-vortex scrubber can remove gas emissions, dust, vapors, and other pollutants from a gas stream. It is an innovative technology created to save water that makes it more cost-efficient and differs from other types of scrubbers. If you have any questions or would like to purchase a multi-vortex wet air scrubber, please contact us at info@rdwd.tech
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