The occurrence of foam in the desulfurization process of the absorption tower is a very common problem, and the foam is likely to cause false liquid level and slurry overflow. The foam can be controlled by taking measures as soon as possible and adding defoamers. Nanhui absorption tower desulfurization defoamer is designed for desulfurization process, and it can resist high temperature, strong acid and strong alkali environment and defoam. The effect is obvious.
(Picture: Absorption tower desulfurization system)
Cause analysis of desulfurization foaming in absorption tower
During the operation of the absorption tower desulfurization system, the absorption tower foaming is a common phenomenon. The slurry foam in the absorption tower can easily cause slurry overflow. It is mainly manifested that when the liquid level of the absorption tower is controlled at a normal value, the slurry in the tower flows out through the overflow pipe, and the overflowing slurry is mainly gray foam.
The foaming phenomenon of the slurry in the absorption tower has many adverse effects on the stable operation of the FGD device: the liquid level of the absorption tower cannot be maintained at a normal level; the overflowing foam pollutes the environment around the absorption tower, and at the same time causes the waste of the slurry; The flue gas is carried to the GGH, causing the GGH to accumulate ash and block; it affects the oxidation reaction effect of the slurry, thereby affecting the quality of the stone.
The cause of foaming in the absorption tower is mainly related to the desulfurization process and the composition of the slurry:
1. When the flue gas enters the desulfurization tower, it brings soot and some acid-insoluble organic substances, as well as some heavy metal ions such as magnesium and other substances that are easy to cause foaming. These substances are enriched in the tower with the circulating slurry. Organic substances will form an oil film on the surface of the slurry, causing the surface tension of the slurry to increase, and it is easy to bubble with the agitation of the slurry;
2. The soot is also easy to adhere to the surface of the bubble to increase its surface tension, so that the bubble is not easily broken, and the foaming initiator continuously produces bubbles.
(Picture: Cause analysis of desulfurization foaming in absorption tower)
Nanhui absorption tower desulfurization and defoaming plan
Through the above analysis, the slurry foam of the absorption tower is likely to cause a relatively serious negative impact. Therefore, it is necessary to control the slurry foam in time. The common treatment method is to add a defoamer to eliminate the foam that has been generated, and secondly, relevant measures can be taken to treat the foam in time.
Nanhui defoamer manufacturer has developed and designed absorption tower desulfurization defoamer for rapid defoaming according to the characteristics of easy foaming in the desulfurization process. It can be directly added to the absorption tower drainage pit, and defoamer is added regularly. When foaming overflow occurs at the beginning of the absorption tower, the amount of defoamer added is relatively large. After a period of continuous addition, the foam layer gradually becomes thinner. Reduce the amount of addition until it stabilizes at a certain dosage.
(Picture: Nanhui absorption tower desulfurization defoamer sample)
Features of Nanhui absorption tower desulfurization defoamer:
1. The additive amount is small, the defoaming effect is obvious, and the slurry foam can be quickly eliminated with only a small amount;
2. Factory direct sales, quality assurance, high concentration of defoamer, good defoaming effect and obvious defoaming.
3. Direct supply from the source factory, sufficient supply, good service, strong research and development capabilities, and can develop defoaming solutions based on customer foaming conditions, and the defoaming effect is obviously ideal.
