Organic deposits, like pitch and extractives, are a common challenge in pulp, paper, and board manufacturing. Derived from natural resins and organic compounds in wood fibers, these substances are especially common in mechanical pulping. Their hydrophobic nature causes them to clump together, forming sticky deposits on critical equipment.
The effects of pitch and extractives are costly. These deposits can clog machine clothing, press sections, drying cylinders, and refining equipment, disrupting operations. They also cause sheet defects, such as holes, specks, and coating issues, compromising product quality. Additionally, they reduce drainage and retention efficiency, lowering productivity. Contamination often leads to unplanned maintenance shutdowns, increasing costs and downtime. Effective solutions for controlling organic deposits are essential for keeping machines clean, maintaining paper quality, and ensuring stable operations.
Properties and Benefits
Our organic deposit control solutions are desgined to prevent and remove the harmful effects of pitch and extractives. These solutions leverage innovative, scientifically proven mechanisms to combat deposition issues:
- Dispersants: Keep pitch particles stable in process water, preventing them from forming larger deposits.
- Charge neutralization: Reduces the stickiness of colloidal pitch, making it less likely to stick to equipment.
- Fixation agents: Bind extractives to fiber surfaces, keeping them in the pulp instead of the process water.
- Surfactant-based emulsification: Removes hydrophobic substances from machine components through emulsification.
- Compatibility with wet-end chemistry: Integrates with retention, drainage, and other systems for better performance.
By using organic deposit control solutions, mills can achieve clear benefits. These include fewer pitch-related runnability issues, leading to smoother operations and less downtime from machine cleaning. Paper quality improves by preventing pitch contamination, while fiber processing, screening, and refining become more efficient. Chemical usage is also reduced as process stability minimizes the need for extra additives like retention aids.
Usage and Applications
Our organic deposit control solutions are designed for targeted application across key stages of pulp and paper production:
- Wet-end chemistry: Keep extractives bound to fibers for uniform sheet formation and reduced contaminants.
- Paper machine clothing and press sections: Minimize stickies on felts, wires, and rolls to maintain machine performance.
- Coating and sizing operations: Improve surface cleanliness and coating uniformity with surfactant-assisted cleaning.
Banmark offers guidance on identifying the best dosing points to match furnish composition and operating parameters. Regular monitoring ensures continuous control, with adjustments as system needs change.
Our services
At Banmark, we specialize in tackling organic deposit challenges with advanced chemical solutions and a practical, customer-focused approach. Our team works closely with mills to deliver effective, reliable results for managing pitch and extractives. Our operations are based on:
- Tailored analysis: To assess specific process conditions to recommend the best treatment plan.
- Seamless implementation: From dosing to application, we ensure chemicals are used efficiently to deliver results.
- Ongoing support: Continuous monitoring and system adjustments to maintain long-term deposit control.
Our commitment goes beyond products—we partner with our customers to improve efficiency, minimize downtime, and enhance product quality. With Banmark, you can confidently manage pitch challenges and keep operations running smoothly.
