Automated Monitoring and Waste Gas Treatment Solution for Pulp & Paper Chemical Production Lines

Papermaking and chemical production lines involve numerous process steps and diverse equipment brands. Line control, waste gas treatment, and wastewater treatment are often built by different suppliers with incompatible communication protocols. Data is scattered across separate monitoring interfaces, requiring operators to switch between systems to troubleshoot anomalies, which prolongs fault localization. Additionally, waste gas and wastewater are key areas of environmental regulation, demanding high standards for data recording and traceability that manual inspections cannot meet continuously. This solution adopts a four-layer architecture: "Terminal Acquisition—Local Control—SCADA Monitoring—Cloud Platform Operations." The terminal layer uses IoT controllers to collect device data and integrate communication protocols, enabling plug-and-play platform access compatible with multi-vendor devices. The control layer provides complete PLC cabinets, MCC cabinets, variable frequency drive cabinets, and low-voltage distribution panels configured per process section; explosion-proof enclosures can be selected based on site conditions. The monitoring layer aggregates data from multiple PLC stations via MODBUS, OPC, Profibus-DP, RS485, and Ethernet using the SCADA system. It displays operational status dynamically on control workstations and video walls, supporting hierarchical monitoring of high- and low-voltage systems, tiered alarm notifications, historical data queries, trend analysis, and video verification linked to cameras and DVRs. The platform layer leverages a SaaS IoT cloud to provide user, mobile, and backend configuration interfaces, enabling remote device operation and rapid response to anomalies. For waste gas and wastewater pool monitoring, data from all treatment units is unified under the MODBUS protocol. Communication protocols from multi-vendor device controllers are standardized and processed, presenting process, environmental, and equipment status on a single platform to meet regulatory data recording and traceability requirements. In multi-site scenarios, each plant's monitoring system connects to the central control center via a dedicated VPN network, allowing local control stations and the cloud to run simultaneously with bidirectional data exchange. The solution delivery includes personalized consulting throughout the project lifecycle and rapid, cost-effective platform deployment. It covers mechanical and electrical installation, electrical control programming and commissioning, and system maintenance services. This turnkey scope spans construction design, solution optimization, cabinet supply, installation, software development, and final commissioning.

Use Cases:Paper machine and pulping line control systems, chemical reactor and batching system control, waste gas treatment and desulfurization/SCR monitoring, wastewater plant and tank data acquisition, explosion-proof electrical cabinet solutions, multi-site production line centralized O&M, and IoT retrofitting of existing DCS/PLC systems.