Chemical Dosing Systems Chemical Dosing Systems Company

Product Overview

QILEE’s Chemical Dosing Systems are skid-mounted, integrated dosing solutions designed for papermaking plants. They combine metering pumps, mixing and dilution units, PLC-based control, and monitoring/alarm functions into configurable packages for precise, continuous dosing of a wide range of chemical aids. Systems are offered with corrosion-resistant materials and can be customized in capacity (0.5–5000 L/h), materials, control interfaces and multi-aid integration.

Product Features

- PLC control with touch-screen HMI and dual automatic/manual control modes; closed-loop dosing linked to machine speed and pulp flow.

- On-line dilution and mixing module to produce consistent concentrations and prevent uneven dosing.

- Skid-mounted, space-saving design integrating pumps, tanks, piping and control cabinets.

- Corrosion-resistant construction (standard 316L stainless steel / PTFE; optional Hastelloy or PFA) and components sized for wet/high-humidity conditions.

- Comprehensive monitoring and alarms (liquid level, flow, pressure, pump overload) plus safety devices (emergency stop, leakage protection).

- Flexible integration: stand-alone PLC, DCS linkage (Siemens/ABB/Emerson), or IoT remote monitoring and automatic replenishment options.

Product Value

- Ensures accurate, repeatable chemical dosing to stabilize paper quality and production consistency.

- Reduces chemical waste and operational costs through precise metering, online dilution and automatic control.

- Improves plant safety and uptime with corrosion-resistant materials, monitoring/alarm systems and automatic protection features.

- Saves installation footprint and simplifies maintenance with skid integration and customizable multi-aid units.

- Enables operational flexibility and digital oversight via DCS/IoT integration and remote monitoring capabilities.

Product Advantages

- High dosing accuracy and stable operation from PLC control and closed-loop feedback.

- Versatile for both wet-end and dry-end applications and compatible with a broad range of aids (sizing, retention/drainage aids, cationic starch, bactericides, cleaners, softeners, waterproof agents).

- Durable, low-maintenance construction using 316L/PTFE (upgradable for aggressive chemistries), extending service life and lowering lifecycle costs.

- Fast commissioning and strong after-sales support: 18-month warranty and 24-hour technical assistance with on-site commissioning for complex projects.

- Scalable and customizable (multiple pumps, up to 8 simultaneous aids, capacity and environmental adaptations) to match diverse papermill layouts and operating conditions.

Application Scenarios

- Pulping: dosing cooking and bleaching aids.

- Wet-end paper forming: adding sizing agents (rosin, AKD, ASA), reinforcing agents (cationic starch, PAM), retention and drainage aids (anionic PAM, bentonite).

- Dry-end/finishing: softeners, waterproof agents, anti-yellowing and surface sizing.

- Paper machine maintenance: bactericides (isothiazolinones, glutaraldehyde), alkaline/chelating cleaning agents and automatic cleaning of pipelines/tanks.

- Harsh environments: high-humidity wet-ends, high-temperature workshops or cold regions (with optional heating or moisture-proof components) and plants requiring DCS/IoT integration or multi-chemical dosing on a single skid.