How to Solve the Foam Problem in Papermaking Black Liquor? Chemi Tech's Efficient Defoamer Solution Explained

In the pulping process of papermaking, the persistent foam generated during black liquor handling is a common challenge for many enterprises. This foam not only causes material overflow and environmental contamination but also significantly reduces evaporation efficiency, increases energy consumption, and can even destabilize the subsequent alkali recovery system. Traditional defoaming methods often offer short-lived effects, requiring frequent additions, which in turn increases overall costs and may introduce new impurities.

Addressing these pain points, Chemi Tech, with its deep understanding of papermaking processes, has developed a series of high-efficiency defoamers specifically for black liquor. Our solution is not merely about adding chemicals; it starts from the root cause of foam formation, providing a systematic control strategy.

Our resolution steps are clear and structured. Step One: On-site Diagnosis and Sample Analysis. Our technical engineers conduct on-site visits to understand specific process conditions, foam generation points, and characteristics, performing professional analysis on black liquor samples to identify the primary causes of foam. Step Two: Customized Formula Recommendation. Based on the analysis results, we select or fine-tune the most suitable defoamer型号 from our product portfolio. Our products exhibit excellent resistance to high temperatures and strong alkalinity, maintaining long-lasting effectiveness in the harsh environment of black liquor, rapidly breaking existing foam and suppressing its regeneration. Step Three: Optimized Dosing Program and Operational Guidance. We recommend the most economical addition points and dosages, ensuring the defoamer is fully compatible with the process system without negatively impacting downstream operations, while providing detailed operational and monitoring guidelines.

In a case involving an enterprise specializing in packaging paper production, its alkali recovery section suffered a roughly 15% decrease in evaporator efficiency due to black liquor foam, coupled with a heavy cleaning burden. By implementing our three-step solution and applying the targeted product, foam was brought under immediate and sustained control. Evaporator efficiency returned to design levels, and the on-site working environment improved significantly. The customer reported enhanced system stability alongside optimized overall treatment costs.

Choosing Chemi Tech means you acquire not just a defoamer, but a package of professional support dedicated to improving the efficiency and reliability of your entire black liquor handling process. We are committed to delivering precise technical services to help our clients achieve smoother production processes and enhanced economic benefits.