Desulfurization methods

Desulfurization methods are as follows:

1, wet, semi-dry, dry three categories of desulfurization process. The most common desulfurization methods for calcium desulfurization and ammonia desulfurization, furnace calcium spray, plasma, seawater desulfurization, etc. The market is very small, and only applies to special circumstances.

2, wet desulfurization technology is more mature, high efficiency, simple operation. Traditional limestone / lime - gypsum method of flue gas desulfurization process using calcium-based desulfurization agent to absorb sulfur dioxide generated by calcium sulfite, calcium sulfate, due to its small solubility, it is very easy to form in the desulfurization tower and pipeline scaling, clogging phenomenon.

3, double alkali method of flue gas desulfurization technology is to overcome the shortcomings of limestone - lime method is easy to scale and developed. With the gradual implementation of the new environmental protection law, the efficiency of desulfurization requirements are also higher and higher, can meet the efficiency of desulfurization of desulfurization only calcium and ammonia method, but calcium desulfurization process complexity, clogging, corrosion, sulfur gypsum stacking and other issues, but is still the current mainstream desulfurization.

4, ammonia desulfurization process is relatively simple, does not produce any waste, and ammonium sulfate can be produced to do compound fertilizer, but there is still a larger investment, the problem of higher operating costs. Ammonia desulfurization is currently the least problematic desulfurization method, but also the mainstream trend in the future, the new integrated desulfurization and denitrification technology has been gradually improved to meet the standards of the new environmental protection law of ultra-low emissions.