Electrical Control Room

Acid gases among environmental pollutants constitute the primary cause of metal corrosion. To ensure safe, reliable and sound operation of industrial process measurement and control systems, control‑room environments must be properly protected. In recent years, EU RoHS directives restricting hazardous substances in electrical and electronic equipment have brought unexpected challenges to corrosion control for electronic‑electrical devices. The ISA standard recommends a more practical and quantitative “reactivity monitoring” method, which determines the environmental corrosion level based on the corrosion results of copper and silver coupons exposed to the control‑room atmosphere for a defined period. More attention shall be paid to mitigating corrosion of electronic equipment caused by corrosive gases and improving system operational stability.

Oil Refinery

Refineries adopt central control rooms to monitor and regulate plant operations. Distillation and desulfurization processes release various acid gases. Pollutants of different types and concentrations inflict varying degrees of corrosive damage on critical components. Corrosion on conductive copper and silver parts of technical equipment will impair production efficiency, trigger unplanned downtime, incur high maintenance expenses and raise overall operating costs. To address such issues, the International Society of Automation (ISA) has developed ISA‑71.04‑2013, the classification standard for electrical control‑room and process‑control environments. Most equipment manufacturers require control‑room environments to comply with the ISA G1‑Mild Corrosion classification to sustain reliable communication networks under industrial conditions.

Chemical Plant

Major atmospheric pollutants in the chemical industry include sulfur dioxide, nitrogen oxides, particulate matters and non‑methane volatile organic compounds. Gaseous pollutants of various types and concentrations cause varying degrees of corrosion to key assets such as electrical cabinets, electrical control rooms and process‑control systems. Unplanned downtime and costly maintenance may occur at any time, resulting in a sharp rise in operating costs.

Fertilizer Plant

Ammonia, nitrogen oxides, sulfur oxides, gaseous fluorides and dust generated in fertilizer plants give rise to severe air pollution and pose great risks to production processes and personnel health. Chemical gas‑filtration and purification systems must be deployed to effectively control particulate matters and hazardous gases.

Paper Mill

Harmful substances in waste gas discharged from pulp and paper mills include sulfur dioxide, nitrogen oxides, suspended particulates and odorous compounds, which inevitably pollute the atmosphere. In addition, odors generated during pulping and dust produced in straw‑based raw‑material preparation are significant atmospheric pollutants. Pollutant gases of different categories and concentrations corrode key facilities including electrical cabinets, control rooms and process‑control systems, potentially causing unplanned downtime and high maintenance costs, and driving up operating expenses substantially.

EcoKeeper

EcoKeeper removes gaseous pollutants and guarantees stable production processes. It brings concentrations of corrosive gases, oxidizing gases and VOCs down to safe levels, mitigates corrosion of critical electronic components and minimizes operational risks.