Calcium hydroxide desulfurization technology is suitable for smaller systems. Its advantages are simple system, low investment and high desulfurization efficiency, while its disadvantages are high operation cost and heavy maintenance workload. In addition, due to the unstable chemical properties of calcium hydroxide, calcium hydroxide is generally obtained by dissolving quicklime in water (that is, calcining limestone to obtain calcium oxide). At present, the purity of calcium oxide in the market is relatively low, so the gypsum quality of this system is very poor, which is not conducive to comprehensive utilization. In addition, the mechanism of using calcium carbide as absorbent is also calcium hydroxide desulfurization technology.
When calcium hydroxide is used for desulfurization, system wear and scaling are serious. I don't think this desulfurization process is your best choice.
Most domestic first-line environmental engineering companies, such as Longjing Environmental Protection, Shanghai Electric Ishikawa Island and Yuanda Environmental Protection, can do this process, but they are not their dominant processes. In fact, some second-tier environmental engineering companies are more professional.