Comparison of the advantages and disadvantages of agitators or disturbance pumps in desulfurization process absorption towers

The current trend is perturbation pump technology; by using a perturbation system, there are no mechanical mixers or rotating components in the slurry tank of the absorption tower, only pipes and perturbation nozzles, which reduces the amount of work required for maintenance. Replacing or repairing the perturbation pump during the operation of the absorption tower does not affect the operation of the desulfurization system, nor is it necessary to empty the slurry in the absorption tower’s slurry tank. Unless there is maintenance work on the internal components of the absorption tower, it is not necessary to empty the slurry tank of the absorption tower.

Is the perturbation pump also something from abroad? Which manufacturers mainly? Does anyone know? It seems that domestic pump manufacturers don’t produce many of them

I just checked: there is some information regarding perturbation pumps. In the design of the slurry tank in its absorption towers, Guohua Ebara does not use traditional agitators; instead, it employs a unique \"perturbation system\" to achieve mixing. “The “perturbation system” consists of a slurry perturbation pump installed outside the tower and a perturbation nozzle layer inside the tower; the perturbation nozzle layer includes perturbation pipes and perturbation nozzles. A perturbation pump is used to draw the slurry from the slurry tank of the absorption tower and pump it into the layer of perturbation nozzles inside the tower. These perturbation nozzles spray the slurry toward the bottom of the slurry tank; the high flow rate of the slurry ejected by these nozzles causes the slurry in the tank to be disturbed and suspended, thereby effectively preventing the deposition of solids in the slurry. During the shutdown of the absorption tower, the perturbation system can be shut down as well; especially when performing maintenance on the auxiliary equipment of the absorption tower, it is possible to refrain from using this system in order to save electricity. When the absorption tower is ready to start operating, the agitation pump is turned on first. The \"clear water\" with a low solid content from the upper part of the tower’s slurry tank is pumped out through this pump and fed into the agitation nozzle layer to stir the slurry in the tower. Once the slurry in the bottom part of the tank has been evenly stirred, the inlet valve of the pump is switched to draw in the slurry from the bottom of the tank for further circulation and agitation, thereby enhancing the stirring effect. The spraying agitation helps to ensure that the newly added limestone slurry mixes evenly throughout the tank. The use of a suspension perturbation system eliminates the need for mechanical mixers and any rotating components in the absorbent tower slurry tank; only pipes and perturbation nozzles are used, which reduces the amount of work required for maintenance. Replacing or repairing the perturbation pump during the operation of the absorption tower does not affect the operation of the desulfurization system, nor is it necessary to empty the slurry in the absorption tower’s slurry tank. Unless there is maintenance work on the internal components of the absorption tower, it is not necessary to empty the slurry tank of the absorption tower.

Will a disturbed nozzle get clogged? Does perturbation require a pulse?

Disturbed nozzles generally do not get clogged; compared to mechanical stirring, a disturbance system, when properly arranged in the absorption tower, does not have dead zones. However, due to the impact of its disturbances, wear will occur at the tower wall location corresponding to the nozzle; but appropriate measures can be taken during design and construction to address this issue. Additionally, the perturbation tube needs to be treated accordingly to improve its wear resistance