**Defoamer for Paper Pulp**: A Comprehensive Guide to Selection & Use
Foam is a persistent and costly challenge throughout pulp and paper manufacturing. Generated during critical stages like pulping, pulp washing, screening, and within the black liquor, uncontrolled foam significantly hinders pulp processing foam control efforts, impacting production rates, chemical recovery, operational stability, and final paperpulp quality. Effectively managing this requires specialized antifoams for pulp process.
The role of a high-performance pulp defoamer is therefore critical. Implementing the right foam control for pulp strategy prevents costly issues such as slurry overflow, reduced pump efficiency, paper machine deposits, and poor water filtration. This ultimately protects product quality and improves the overall efficiency of pulp mills.
INVINO leverages advanced chemistry, including innovative silicone technology, to deliver superior foam control solutions specifically designed for the demanding conditions of the pulp and paper industry. Our defoamer for paper pulp products, such as those in our INVINO-6820 series are engineered for excellent foam suppression, even in challenging black liquor applications, without causing detrimental deposits. They aim to enhance drainage and water filtration, helping pulp mill operators improve efficiency and potentially reduce total operating costs. This article will explore the key challenges of foam in pulp processing and guide you on selecting the optimal antifoaming agent for paper pulp, supported by practical insights
Essential Properties for Effective **Paper Pulp Defoamers**
Comparison chart of Dispersion of defoamer in black liquor
Performance Testing: **Defoamer for Paper Pulp** Results
Sample: FennoTech 6001、FennoTech 6003 and INVINO-6820
Product Data sheet
| Product Code | Appearance | Active Solid (% | Viscosity Mpa•s (25℃)（Rotor3# rotates 12 times） | Particle size (D50/90) | PH |
|---|---|---|---|---|---|
| FennoTech 6001 | White Emulsion | 20.55 | 3032 | 6 .25/15.93 | 7.2 |
| FennoTech 6003 | White Emulsion | 22.00 | 1688 | 13.05/71.89 | 7.4 |
| INVINO-6820 | White Emulsion | 23.04 | 2727 | 23.62/68.13 | 8.5 |
Test Method
Take 400mL of black liquor and add it to the circulating test device and heat it to 80-85℃. Turn on the circulating pump, add defoamer when the foam height rises to 1000ml, record the corresponding foam height at each corresponding time, and stop the experiment when the foam height rises to 1000ml again
High temperature (80℃) test results of black liquor
Testing results of black liquor precipitates
Take 80g of black liquor and heat it to 80℃, add 220g of defoamer, stir at constant temperature for 10 minutes, filter, dry and weigh with filter cloth, and calculate the corresponding results.
| Product Code | Net weight (g) | Gross Weight (g) | Precipitate drying weight (g) | Precipitation rate (%) |
|---|---|---|---|---|
| INVINO-6820 | 1.6444 | 1.9481 | 0.3037 | 7.59 |
| FennoTech6001 | 1.6637 | 4.4119 | 2.7482 | 59.64 |
| FennoTech6003 | 1.5878 | 2.3083 | 0.7205 | 15.66 |
Effective foam control is undeniably crucial for optimizing efficiency and maintaining quality throughout paper pulp processing. Choosing the right antifoaming agent for paper pulp can make a significant difference in tackling issues from pulp washing to black liquor management.
As demonstrated by the comparative experimental results presented in this article, INVINO-6820 consistently stands out, showcasing superior performance in rapid foam suppression and long-term stability under demanding pulp mill conditions. Its effectiveness, particularly in challenging environments like black liquor systems without causing detrimental deposits, highlights its advanced formulation based on innovative silicone chemistry。
This proven performance directly translates to tangible benefits for your operation: enhanced production throughput, improved pulp quality, better drainage and washing efficiency, and potential reductions in overall operating costs. For pulp and paper manufacturers seeking a reliable, high-efficiency pulp defoamer solution backed by real-world data, INVINO-6820 represents a clear advantage.
Take control of your foam challenges. Contact INVINO today to learn more about how INVINO-6820 can specifically benefit your paper pulp process, discuss your technical requirements, or request a sample for your own evaluation.
