The Secret to Stable Operations in Bleaching Towers: Jiwei Vibrating Level Switch

In pulp and paper production, the bleaching tower is an indispensable part of the process. Often reaching up to 25 meters in height, this towering structure is where raw pulp undergoes bleaching to achieve the desired whiteness. This continuous process operates at temperatures up to 95°C and involves aggressive chemicals such as oxygen, ozone, and hydrogen peroxide. Maintaining optimal control over material levels inside the bleaching tower is critical for efficiency, product quality, and equipment safety.

Accurate point level detection plays a key role in the smooth operation of bleaching towers. With the high density of pulp, fluctuating flow rates, and chemically aggressive environment, conventional level detection technologies often fall short. This is where the Jiwei vibrating level switch offers a distinct advantage, providing a highly reliable and maintenance-free solution for point level applications even under the harshest conditions.

The Jiwei vibrating level switch is specially engineered for dense slurry detection, making it perfectly suited for use in bleaching towers. Unlike continuous level transmitters, the vibrating level switch is ideal for point level monitoring, such as signaling high or low-level alarms to prevent overfilling, dry running, or process disruption.

Key Features of Jiwei Vibrating Level Switch for Pulp and Paper Industry:

• 40mm Fork Length: Specially designed for pipelines and confined spaces, offering easy installation in tight environments.
• High Sensitivity: The fork’s harmonic resonant frequency is precisely pre-adjusted to enable detection of media with a density as low as 0.5g/cm³, ideal for varying pulp consistencies.
• Strong Anti-Interference: Resistant to foam, bubbles, viscosity, oscillation, and other liquid characteristics, ensuring reliable performance even in fluctuating flow conditions commonly seen in bleaching towers.
• Corrosion-Resistant Option: Hastelloy C-22 material withstands fluid corrosion and erosion in high-temperature applications, setting a benchmark in China’s technology.
• High Temperature Performance: The vibrating level switch operates efficiently at process temperatures up to 280°C, making it suitable for high-temperature applications in bleaching towers.
• Flexible Output Options: Choose from relay, two-wire, NAMUR, or transistor outputs for versatile integration.
• SIL2/SIL3 Certifications: Compliant with IEC 61508 standards, ensuring safe operation in critical applications.
• Explosion-Proof and Intrinsic Safety: Certified for use in hazardous areas, providing enhanced safety in chemically aggressive environments.
• HACCP, and 3A Compliance: Ensures safety, hygiene, and reliability for applications in the food and pharmaceutical industries.

Benefits of Jiwei Vibrating Level Switch in Bleaching Towers:

• Reliable Point Level Detection: The vibrating level switch ensures stable point level detection, unaffected by temperature fluctuations, chemical variations, or pressure changes, which is crucial for maintaining consistent bleaching processes.
• Optimal Capacity Utilization: Accurate level monitoring helps optimize the bleaching tower’s capacity, preventing overflow and maintaining smooth process flow.
• Reduced Maintenance Costs: The robust design, combined with corrosion-resistant materials, reduces the need for frequent maintenance and minimizes downtime.
• Enhanced Safety: The switch provides precise alarm signals, enabling early fault detection and preventing dangerous process conditions such as dry running or overfilling.

In the demanding environment of pulp bleaching, where high sensitivity, chemical resistance, and reliable operation are essential, Jiwei vibrating level switches stand out as the trusted solution. With proven performance across a wide range of harsh applications, Jiwei continues to support the pulp and paper industry with innovative, durable, and efficient level detection technologies.

Frequently Asked Questions (FAQ)

Q1: Why are vibrating level switches preferred over continuous level transmitters in bleaching towers?
A1: Vibrating level switches, like the Jiwei model, are ideal for point level detection, which is critical in preventing overfilling, dry running, and process disruptions. They offer superior resistance to foam, bubbles, and chemical interference, making them more reliable in the challenging conditions of bleaching towers.

Q2: How does Jiwei’s vibrating level switch handle high temperatures in the bleaching process?
A2: The vibrating level switch is designed to withstand process temperatures up to 280°C, with additional options for cooling systems to handle even higher temperatures. This ensures reliable operation even under extreme thermal conditions.

Q3: Is the Jiwei vibrating level switch affected by the chemical aggressiveness of the pulp?
A3: No. The vibrating level switch is made with materials like Hastelloy C-22, offering excellent resistance to corrosion and erosion from aggressive chemicals commonly used in bleaching operations.

Q4: Does the Jiwei vibrating level switch require frequent maintenance or recalibration?
A4: No. The vibrating level switch is maintenance-free and does not require recalibration after installation. Its self-diagnostic function ensures ongoing fault detection without the need for routine maintenance.

Q5: What certifications support the use of Jiwei vibrating level switches in critical applications like bleaching towers?
A5: Jiwei vibrating level switches are certified with SIL2/SIL3, CE, and intrinsic safety and explosion-proof standards. They also comply with FDA, HACCP, and 3A standards, ensuring safe and reliable operation in hazardous and food-grade environments.

By integrating Jiwei vibrating level switches into your bleaching towers, you can ensure reliable, efficient, and safe operation, even in the harshest conditions.