In the chemical production process, the caustic scrubbing tower is a key purification unit. However, the alkali liquid system often generates a large amount of foam during operation, which reduces the effective space inside the tower and lowers the gas-liquid contact efficiency, and may even cause overflow, threatening operational safety and equipment stability. Frequent manual intervention not only increases labor intensity but also directly affects the continuity of production and economic benefits.


In response to this pain point, Chemi Tech has devoted itself to developing a dedicated defoamer for caustic scrubbing towers. This product is not a general-purpose additive, but a solution tailored based on in-depth research on the effects of alkali liquid composition, temperature, flow rate and common impurities. Its core advantages are: it can rapidly penetrate the foam film and reduce its surface tension to achieve rapid defoaming; at the same time, it maintains good dispersibility and stability in the alkali liquid, providing long-lasting foam suppression to prevent repeated foam generation.


Our solution is implemented in three specific steps: step one, problem diagnosis and analysis. Our technical team will evaluate the working conditions of your caustic scrubbing tower, including alkali liquid concentration, temperature range and possible foaming substances. Step two, model selection and trial. According to the diagnosis results, the best-matching defoamer model is recommended, and a small-batch trial is provided to verify the defoaming speed and persistence on site. Step three, integration optimization and continuous support. The optimal addition point and dosage are determined, integrated into your control process, and follow-up performance monitoring is provided to ensure long-term stable operation.


For example, in a chemical enterprise, because the raw material carried trace organic matter, the foam problem in its caustic scrubbing tower was prominent at high temperature, which once caused the separation efficiency to drop by about 15%. After adopting Chemi Tech's customized defoaming solution, by continuously adding a trace amount at the feed end, the foam was effectively controlled within a few minutes, the tower operation returned to stability, the separation efficiency recovered to the design level, and the maintenance man-hours caused by foam were reduced by about 30%.


Choosing the Chemi Tech defoamer for caustic scrubbing towers means choosing a professional tool focused on solving specific process problems. Our engineers are committed to helping you eliminate foam hazards and improve the operational reliability and overall economic benefits of the caustic scrubbing tower through precise products and meticulous service.