Scaling in catalytic flue gas desulfurization pipelines

Are there specific drawings for the desulfurization process equipment?

Is it scaling, or is there too much catalyst?

It isn’t clear which location it is It probably refers to the pipelines for the circulating slurry. The pumps used for circulating slurry in catalytic flue gas desulfurization systems are usually operated in pairs with one pump as a backup. The backup pump presents certain issues, as the slurry contains a large amount of fine catalyst particles, which can accumulate in the inlet and outlet pipelines of this backup pump. The same phenomenon occurs in the inlet and outlet pipelines of the filter modules. This is determined by the design principles of the process flow as well as the characteristics of pipeline design. In this regard, the desulfurization systems in power plants have an advantage: usually three circulation slurry pumps operate simultaneously, which eliminates the problem of particle deposition. It is also ensured that even if one pump fails, it will not affect the operational process or the efficiency of desulfurization and dust removal. The placement of these circulation slurry pumps is carefully considered as well; they are located below the scrubber (absorption tower), and the inlet and outlet pipelines for these pumps run in a straight line, either upward or downward.

The external drainage is insufficient! The saltwater is saturated… act quickly; use steam to blow it away. Remember to ensure that the wastewater is discharged in accordance with the requirements specified in the technical agreement. Otherwise, it will cause **troubles!

The main causes of scaling issues are the pH value and TSS content of the circulating slurry, as well as water hardness. Comparing the two, pH has a greater impact. The operation of certain devices shows that when pH is kept above 11, the slurry absorbs CO2; high hardness levels increase the rate of scaling. The TSS content also has a promoting effect, but it is not the main factor.