Double alkaline desulfurization(perfect dust removal desulfurization

configuration of circulating fluidized bed)

Double alkaline desulfurization method NaOH/Ca(OH )₂) adopts the sodium salt which is easily soluble in the water, thus it can absorb the sulfur dioxide inside the absorbing tower. the absorbed desulfurization liquid can be recovered in the recovery pool with the cheap lime, thus the sodium ion can be recycled for absorbing use. This method combines the features of the lime method and sodium alkaline method which can not only solve the scaling problem of lime method inside tower but also show the high absorbing efficiency of the sodium alkaline method

Recently the wet type desulfurization is widely applied which can dominant over 90% of the total installing quantity of FGD all over the world. Among which because Double alkaline desulfurization method shows simple desulfurization process, stable operation, high desulfurization efficiency, and low desulfurization cost which is suitable for our country condition, thus it is widely applied in our country