Concrete is prone to corrosion in environments with a pH value below 5.6. Therefore, buildings must implement anti-corrosion measures to protect structural safety and maintain the original design lifespan.
High Quality Construction Team
Crude oil contains 0.5%–2% sulfur, varying by origin. To reduce sulfur in refined products and prevent corrosion and pollution, sulfur compounds are converted into hydrogen sulfide, recovered, condensed into liquid sulfur in sulfur pits, and transported for sulfur production.
Sulfur melts at 115.21°C. In sulfur pits, it is heated to 145°C, with the air above at 121°C. These pits, made of reinforced concrete, are underground for safety. While concrete withstands high temperatures, it deteriorates from acid gases and liquids over time. Organic resins also fail under prolonged heat and acid exposure.
A new refinery sulfur pit is now operational, but the existing anti-corrosion system has failed, blocking sulfur pumps and causing shutdowns. Hydroflex liquid glass was selected for maintenance due to its high-temperature resistance, inorganic durability, and strong acid resistance.
Each 300 m² sulfur pit requires Hydroflex coating. With only 20 days for maintenance, work proceeds 24/7 in three shifts. Tasks include removing old materials, sulfur, and debris, followed by water jetting, sandblasting, applying Hydroflex on steel reinforcements, repairing concrete, and coating with Hydroflex liquid glass. This ensures timely completion and operational readiness.
Crude oil contains 0.5%–2% sulfur, varying by origin. To reduce sulfur in refined products and prevent corrosion and pollution, sulfur compounds are converted into hydrogen sulfide, recovered, condensed into liquid sulfur in sulfur pits, and transported for sulfur production.
Sulfur melts at 115.21°C. In sulfur pits, it is heated to 145°C, with the air above at 121°C. These pits, made of reinforced concrete, are underground for safety. While concrete withstands high temperatures, it deteriorates from acid gases and liquids over time. Organic resins also fail under prolonged heat and acid exposure.
A new refinery sulfur pit is now operational, but the existing anti-corrosion system has failed, blocking sulfur pumps and causing shutdowns. Hydroflex liquid glass was selected for maintenance due to its high-temperature resistance, inorganic durability, and strong acid resistance.
Each 300 m² sulfur pit requires Hydroflex coating. With only 20 days for maintenance, work proceeds 24/7 in three shifts. Tasks include removing old materials, sulfur, and debris, followed by water jetting, sandblasting, applying Hydroflex on steel reinforcements, repairing concrete, and coating with Hydroflex liquid glass. This ensures timely completion and operational readiness.
1. Hydroflex Concrete Repair: It is a cement-based repair material that is resistant to sulfide corrosion.
2. Hydroflex Liquid Glass: It is an inorganic material formed by mixing and stirring silicates with strong alkaline liquids, exhibiting properties similar to liquid glass, which is resistant to high temperatures and acids after curing.
1. High temperature resistance.
2. Acid resistance.
3. Can be spray-coated on concrete surfaces.
4. Seamless overall.
Crude oil contains 0.5%–2% sulfur, varying by origin. To reduce sulfur content in refined products and prevent equipment corrosion and air pollution, sulfur compounds are converted into hydrogen sulfide during refining, then recovered, condensed in sulfur pits as liquid sulfur, and transported to sulfur recovery facilities for further processing.
Sulfur has a melting point of 115.21°C and is maintained at 145°C in sulfur pits, with the air above reaching 121°C. For safety reasons, sulfur pits are constructed underground with reinforced concrete. While concrete can withstand high temperatures, it gradually deteriorates when exposed to acidic gases and liquids over time. Similarly, organic resin materials cannot endure prolonged exposure to high temperatures or strong acids, making them unsuitable for long-term protection in such environments.
After ten years of use, the corrosion protection system in the newly constructed refinery’s sulfur pits has deteriorated, causing a complete loss of protection for the concrete. The collapsed materials block sulfur pumps, halting the sulfur pit operation and leading to a refinery shutdown.
Hydroflex Liquid Glass is selected for repairs due to its high-temperature resistance, durability, and strong acid corrosion resistance. Each sulfur pit, approximately 300 m², requires spray-coating with Hydroflex Liquid Glass. Typically, construction must be completed within a 20-day shutdown window.
The process includes removing old materials, sulfur, cleaning, water jet treatment, sandblasting, applying Hydroflex for corrosion resistance, repairing concrete, and coating with Hydroflex Liquid Glass. Work is done in three shifts, 24/7, to ensure the project is completed and ready for reactivation within 20 days.
1. Hydroflex Concrete Repair: It is a cement-based repair material that is resistant to sulfide corrosion.
2. Hydroflex Liquid Glass: It is an inorganic material formed by mixing and stirring silicates with strong alkaline liquids, exhibiting properties similar to liquid glass, which is resistant to high temperatures and acids after curing.
1. High temperature resistance.
2. Acid resistance.
3. Can be spray-coated on concrete surfaces.
4. Seamless overall.
Crude oil contains 0.5%–2% sulfur, varying by origin. To reduce sulfur content in refined products and prevent equipment corrosion and air pollution, sulfur compounds are converted into hydrogen sulfide during refining, then recovered, condensed in sulfur pits as liquid sulfur, and transported to sulfur recovery facilities for further processing.
Sulfur has a melting point of 115.21°C and is maintained at 145°C in sulfur pits, with the air above reaching 121°C. For safety reasons, sulfur pits are constructed underground with reinforced concrete. While concrete can withstand high temperatures, it gradually deteriorates when exposed to acidic gases and liquids over time. Similarly, organic resin materials cannot endure prolonged exposure to high temperatures or strong acids, making them unsuitable for long-term protection in such environments.
After ten years of use, the corrosion protection system in the newly constructed refinery’s sulfur pits has deteriorated, causing a complete loss of protection for the concrete. The collapsed materials block sulfur pumps, halting the sulfur pit operation and leading to a refinery shutdown.
Hydroflex Liquid Glass is selected for repairs due to its high-temperature resistance, durability, and strong acid corrosion resistance. Each sulfur pit, approximately 300 m², requires spray-coating with Hydroflex Liquid Glass. Typically, construction must be completed within a 20-day shutdown window.
The process includes removing old materials, sulfur, cleaning, water jet treatment, sandblasting, applying Hydroflex for corrosion resistance, repairing concrete, and coating with Hydroflex Liquid Glass. Work is done in three shifts, 24/7, to ensure the project is completed and ready for reactivation within 20 days.
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