Humidity Control Solutions for Chemical Plants: Protecting Equipment, Chemical Storage & Datacentres from Corrosion

The Story of Microclimate Control in the Chemical Industry

• 💡 Executive Summary
• 1. The "Harsh Battlefield": Chemical Plant Environments
• 2. Devastating Effects of Uncontrolled Humidity & Gases
• 3. The Strict "Rules of the Game": ISA 71.04 Standard
• 4. Microclimate Map: Requirements by Zone
• 5. DeAir's Comprehensive Solution Ecosystem
• 6. Case Study: Protecting a Chemical Plant Datacentre
• 7. Frequently Asked Questions (FAQ)

The Vietnamese chemical industry is growing rapidly (12.5%/year), but production environments are harsh, featuring a deadly combination: high humidity + corrosive gases (SO2, H2S, NO2). DeAir provides a comprehensive microclimate control ecosystem (Dezenno Desiccant Rotor, DeAir.RE Heat-Pump, Dezenno.MAX AHU, Dry Scrubber) that meets the ISA 71.04 Class G1 standard, protecting multi-billion VND assets and ensuring 24/7 operational continuity.

⚠️ THE DESTRUCTION FORMULA: HUMIDITY + CORROSIVE GASES

In chemical plants, electronic equipment and datacentres face a "dual threat":

• High Humidity: Creates an environment for electrochemical corrosion and mold growth.
• Corrosive Gases: SO2, H2S, NO2, and ozone generated from production processes.
• Chemical Dust: Corrosive particulate matter settling on equipment.
• Resonance Effect: Humidity + Corrosive Gases = Corrosion rates accelerate by 10 to 100 times!

📊 CORROSION SEVERITY CLASSIFICATION PER ISA 71.04

* To maintain electronic equipment warranties, chemical plant datacentres MUST achieve the G1 (mild) level according to the ISA 71.04-2013 standard.

• Maintain RH <60% to prevent condensation.
• Limit particulate and gaseous contamination to permissible levels.
• Continuous monitoring via Reactive Monitoring (copper/silver coupons).
• Utilize Dry Scrubbers with Honeycomb Chemical Filters to remove corrosive gases.

🏭 MICROCLIMATE REQUIREMENTS BY CHEMICAL PLANT ZONE

🏭 The Problem: Frequent Datacentre Failures & Network Equipment Breakdowns

Context: A major chemical plant faced a severe issue: the datacentre experienced frequent failures, with network and server equipment breaking down due to copper/silver corrosion. Maintenance costs surged by 300%, and production downtime disrupted the entire operational workflow.

Root Causes:

• Datacentre humidity fluctuated between 65-75%RH (too high).
• Corrosive gases (SO2, H2S) from the production area infiltrated the datacentre.
• No specialized gas-phase filtration system was in place.
• Failed to meet the ISA 71.04 G1 standard.

DeAir's Solution:

• Installed DeAir.RE-1200 dehumidifiers to maintain a stable 50% RH.
• Integrated a Dry Scrubber with Honeycomb Chemical Filters to neutralize SO2 and H2S.
• Implemented a Reactive Monitoring system (copper/silver coupons) for continuous verification.
• Provided comprehensive operational and maintenance staff training.

Results:

• Achieved ISA 71.04 G1 (mild corrosion) compliance.
• Reduced equipment failures by 90%.
• Saved 250 million VND/year in maintenance costs.
• Completely eliminated downtime caused by corrosion.
• Successfully maintained electronic equipment warranties.

📊 BEFORE & AFTER DEAIR SYSTEM INSTALLATION

Q1: Why do chemical plants need a different humidity control solution compared to other industries?

Chemical plants face a "dual threat": high humidity combined with corrosive gases (SO2, H2S, NO2). This combination creates a resonance effect, accelerating corrosion rates by 10 to 100 times compared to normal environments. Therefore, an integrated solution is required: dehumidifiers + Dry Scrubbers with Honeycomb Chemical Filters to meet the ISA 71.04 G1 standard.

Q2: What is the ISA 71.04 G1 standard, and why is it important?

ISA 71.04-2013 is the international standard by the International Society of Automation classifying corrosion severity in datacentres. The G1 (Mild) class requires:

• Copper corrosion rate: <300 Å/month
• Silver corrosion rate: <200 Å/month
• Maintaining RH <60%

This is a MANDATORY requirement to maintain electronic equipment warranties. If G1 is not met, manufacturers may void the warranty.

Q3: How does a Dry Scrubber with a Honeycomb Filter differ from traditional granular media?

Honeycomb Chemical Filter technology offers superior advantages:

• Smaller footprint: Saves valuable commercial space.
• Lower pressure drop: Reduces fan power consumption by 70-80% compared to granular media.
• Higher efficiency: Airflow velocities of 400-600 fpm (vs. 80-120 fpm for granular beds).
• Easier replacement: No messy dust cleanup required like with granular media.

Q4: Does DeAir provide integrated solutions for both humidity and gas control?

Yes, DeAir provides comprehensive integrated solutions:

• Dehumidifiers (DeAir.RE, Dezenno Rotor) for precise humidity control.
• Dry Scrubbers with Honeycomb Chemical Filters to eliminate corrosive gases.
• Reactive Monitoring systems (copper/silver coupons).
• Dezenno.MAX AHU systems for large-scale plant integration.

Everything is engineered to ensure strict compliance with ISA 71.04 G1.

Q5: How do you monitor corrosion levels in a datacentre?

DeAir utilizes Reactive Monitoring:

• Expose copper and silver foil coupons in the datacentre for 30 days.
• Analyze them in a laboratory using coulometric reduction to determine the thickness of corrosion products.
• Classify the environment into G1-G4 levels per ISA 71.04.

This is a simple, low-cost, yet highly accurate method to assess datacentre air quality.

Q6: What is the investment cost and ROI period for such a system?

Investment costs depend on plant scale and pollution levels. However, the Return on Investment (ROI) is typically just 12-24 months due to:

• 90% reduction in electronic equipment maintenance costs.
• Elimination of production downtime (which can cost billions of VND).
• 40% energy savings via Heat-Pump technology.
• Preservation of equipment warranties (avoiding massive replacement costs).

DeAir provides a detailed ROI analysis report for every project.

Q7: Does DeAir support maintenance for equipment from other manufacturers?

Yes, DeAir provides consulting and maintenance services for third-party equipment. Our experienced engineering team (formerly working with brands like Bry-Air and Munters) will:

• Evaluate the current operational status of your system.
• Propose optimal solutions, including recommending suitable replacement equipment.
• Provide scheduled maintenance and calibration services.
• Ensure maximum efficiency and energy savings.

Humidity Control Solutions for Chemical Plants - Protecting Billion-Dong Assets

Don't let the "invisible enemy" (humidity + corrosive gases) destroy your multi-billion VND datacentre and electronic equipment. DeAir is ready to partner with you, providing a comprehensive microclimate control ecosystem that meets the ISA 71.04 G1 standard.

Is your chemical plant looking for an optimal humidity control solution?