Midstream Chemicals
Corrosion Inhibitor (Pyridines-based) for Midstream
Product introduction
▶ Pyridines-based adsorption film type corrosion inhibitor
▶ Water-soluble oil dispersed corrosion inhibitor with excellent comprehensive performance
▶ Protective effects in oil, gas, and water phases, and has good compatibility with other oilfield chemicals.
Technical Index
Appearance |
Clear dark brown liquid |
Solubility（@25℃） |
Soluble in water and low carbon alcohol |
Ionic type |
Cationic |
Content of active ingredients (%) |
50 -80 |
pH(@1%water) |
5.0–9.0 |
Applications/Functions
▲ UBPro-421is mainly used in oil &gas gathering and transportation.
▲ Refinery water treatment.
▲ Mixing with imidazoline and other synergistic components can preventmetals (carbon steel)from corroding in oilfield production water systems with high H2S, CO2, high salinity saline water, and Cl-during oil recovery.
Advantages
> Prevent the corrosion of carbon steel by high H₂S, CO₂, high salinity salt water and Cl⁻.
> Mainly used for oil and gas gathering and transportation and oil refinery water treatment, especially for oil field production water system.
> Has a protective effect in the three phases of oil, gas and water, and has good compatibility with other chemicals.
Recommended Handling
▶ All personnel handling this material must handle it as an industrial chemical, wearing protective equipment and observing the precautions as described in the Material Safety Data Sheet (MSDS).
Packaging and Storage
Packed in 200 liter metal or plastic drums.
Store in dry, well-ventilated area. Keep container closed. Keep away from heat, sparks and flames. Store away from incompatibles. Follow safe warehousing practices regarding palletizing, banding, shrink-wrapping and /or stacking
description2
1. Adsorption Film (Adsorption Film Type Corrosion Inhibitor)
-
Film Formation Mechanism:
Adsorption film type corrosion inhibitors primarily form a protective film on the metal surface through adsorption. Adsorption can be of two types:- Physical Adsorption: Relies on weak interactions such as van der Waals forces between molecules to adhere to the metal surface.
- Chemical Adsorption: Forms a stronger adsorption layer through chemical bonding between molecules and the metal surface.
The formation of this film relies on the affinity of the inhibitor molecules for the metal surface and does not require complex chemical reactions.
-
Film Characteristics:
- Thickness: The film is relatively thin, typically a monolayer or multilayer.
- Structure: The film is relatively simple, primarily acting as a barrier to prevent corrosive media (such as water, oxygen, ions) from contacting the metal.
-
Features:
- Provides uniform coverage on the metal surface and has a wide range of applications.
- Suitable for general corrosive environments but may not be stable enough under extreme conditions such as high temperature and high pressure.
2. Film-Forming (Film-Forming Amine Type Corrosion Inhibitor)
-
Film Formation Mechanism:
Film-forming amine type corrosion inhibitors form a dense protective film on the metal surface through chemical reaction or physical deposition.- Chemical Reaction: Amine molecules react with the metal surface to form insoluble compounds or complexes.
- Physical Deposition: Amine molecules deposit and accumulate on the metal surface to form a thicker film.
The film formation process typically involves more complex molecular interactions, resulting in a more stable film.
-
Film Characteristics:
- Thickness: The film is relatively thick, typically reaching tens to hundreds of nanometers.
- Structure: The film is dense and tough, effectively isolating corrosive media, especially suitable for harsh environments.
-
Features:
- Has excellent high-temperature resistance and corrosion resistance.
- Suitable for high-temperature, high-pressure, and highly corrosive environments.
3. Main Differences Between "Adsorption Film" and "Film-Forming"
Aspect |
Adsorption Film (Adsorption Film Type Corrosion Inhibitor) |
Film-Forming (Film-Forming Amine Type Corrosion Inhibitor) |
|---|---|---|
Film Formation Mechanism |
Relies on
adsorption
(physical or chemical adsorption)
|
Relies on
chemical reaction
or
physical deposition
|
Film Thickness |
Thinner (monolayer or multilayer) |
Thicker (tens to hundreds of nanometers) |
Formation Process |
Simple, depends on molecular affinity |
Complex, may involve chemical reactions or deposition processes |
Protection Effect |
Blocks corrosive media, suitable for general environments |
Strongly isolates corrosive media, suitable for extreme environments |
- The formation of the adsorption film relies more on the adsorption of inhibitor molecules to the metal surface, resulting in a thin and light film suitable for protecting metals in moderate corrosive environments.
- Film-forming, on the other hand, forms a thicker protective layer through chemical reactions or deposition, which is resistant to high temperatures and corrosion, making it suitable for more demanding conditions.