During the pulp and papermaking process, the stubborn foam generated in the black liquor treatment stage is a common challenge faced by many enterprises. Such foam not only causes material overflow and environmental pollution but also severely reduces evaporation efficiency and increases energy consumption, and may even affect the stable operation of the subsequent alkali recovery system. Traditional defoaming methods often have only a short-lived effect and require frequent addition, which instead increases the overall cost and may introduce new impurities.
In response to this series of pain points, Chemi Tech, drawing on its deep understanding of the papermaking process, has developed a series of high-efficiency defoamers specially for black liquor. Our solution is not simply adding chemicals but starts from the root cause of foam generation to provide a systematic control strategy.
Our solution steps are clear and definite: The first step is on-site diagnosis and sample analysis. Our technical engineers will go deep into the site, understand the specific process conditions, the points where foam is generated and its characteristics, conduct a professional analysis of the black liquor sample and determine the main causes of the foam. The second step is customized formula recommendation. Based on the analysis results, we screen or fine-tune a matching defoamer model from our product library. Our products have excellent high-temperature resistance and strong-alkali resistance, can maintain lasting effectiveness in the harsh black liquor environment, quickly break foam and suppress foam regeneration. The third step is optimizing the addition scheme and providing operating guidance. We will suggest the most economical addition point and dosage to ensure that the defoamer is perfectly compatible with the process system and avoid any negative impact on subsequent processes, while providing detailed operation and monitoring guidelines.
In an enterprise focusing on packaging paper production, the black liquor foam in its alkali recovery section reduced the evaporator efficiency by about 15%, and the on-site cleaning burden was heavy. By adopting our three-step solution, after the targeted product was dosed, the foam was controlled immediately and durably, the evaporator efficiency returned to the design level, and the on-site operating environment was greatly improved. According to the customer's feedback, while the system stability improved, the overall treatment cost was also optimized.
Choosing Chemi Tech means you gain not only a defoamer but also a set of professional support dedicated to improving the efficiency and reliability of your entire black liquor treatment stage. We are committed to helping customers achieve smooth production processes and improved economic benefits through precise technical service.