The equipment for desulfurization of industrial waste gas is mostly desulfurization equipment, which is called desulfurization tower. The desulfurization tower was originally more widely used in granite masonry. It uses the principle of water film desulfurization and dust removal, also known as granite water film desulfurization dust collector, or granite water film desulfurization dust collector. The advantage is that it is easy to maintain, and it can achieve the effects of dust removal and desulfurization (denitrification) by formulating different dedusting agents. Now with the development of FRP technology, the desulfurization tower is gradually made of FRP. Compared with granite desulfurization towers, glass fiber reinforced plastic desulfurization towers are low in cost, easy to process, stainless and not rotten, and light in weight. Therefore, they have become the future development trend of desulfurization towers. In addition, 316L stainless steel has three advantages of corrosion resistance, high temperature resistance and wear resistance, and it is also one of the important trends in the development of desulfurization towers. After many years of improvement, it has developed into various types of desulfurization towers such as venturi type, swirl plate type, swirl column type, float ball type, sieve plate type, and pneumatic emulsification type. The equipment technology is becoming more mature, and each has its own advantages and Insufficient, enterprises can choose different types according to their own needs.