Cortec VpCI®-629 Inhibitor for Petroleum Producing and Refining
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Product Description
VpCI-629 series products form a persistent barrier for continuous protection against severe corrosive attacks encountered in refinery and petrochemical operations.
Effective for a wide range of refined hydrocarbons, crudes, and oil/water ratios VpCI-629 products are highly soluble in crude oil and dispersible in fresh water and brine solutions. As a fast-acting long-term inhibitor, VpCI-629 products form an effective corrosion inhibiting barrier for both ferrous and non-ferrous metals in the presence of water, halogens, and corrosive gases such as dissolved oxygen, sulfur dioxide, carbon dioxide, and hydrogen sulfide.
Continuing protection between treatments is assured due to solubility, dispersibility in crude water mixtures, and long-term water displacing film formation provided by VpCI-629 products. In addition, the product provides vapor phase inhibition to protect areas inaccessible through direct solution contact. This unique characteristic protects internal parts during low fluid levels and combats atmospheric corrosion in production and storage tanks. Crude oil processing equipment, pipes and pipelines, refinery equipment and systems can be effectively protected against pitting, corrosive gases and water intrusions. Field test applications performed by independent laboratories verify that VpCI-629 is highly effective at a concentration level as low as 5-15 ppm.
Features
- Effective for a wide range of refined hydrocarbons, crude and oil/water mixtures
- Forms a corrosion inhibiting barrier with high film persistency to give continuous long-term protection
- Vapor phase action provides protection against corrosion from atmospheric conditions for overhead units, production, and storage tanks
- Available in diluted form for easy direct application without premixing
- Post-action inhibition effect
- Prevents stress corrosion cracking (SCC) and hydrogen embrittlement
- Available in super concentrate form to reduce shipment cost of the product (VpCI-629 SC) and in ready-to-use form (VpCI-629 D) to reduce the cost of the labor on the field
Typical Applications
VpCI-629 products are designed for use in crude oil processing equipment, pipes and pipelines, refinery equipment, and systems as well as petrochemical plant equipment and systems. VpCI-629 Super concentrate should be in most cases, diluted 1:1 with mineral spirits or other available hydro carbon based solvents to provide a more flowable product for injection into the systems.
Typical Properties
VpCI-629
| Appearance | Clear yellow to amber liquid |
| Non-volatile Content | 32-37% |
| pH | 10-11 (1% aqueous) |
| Post-action Effect | Up to 60 days |
| Pour Point | 15ºF (-17ºC) |
| Protection Coefficient | 93-99% (NACE TM-01-77) |
| Solubility | |
| Crude oil | Dispersible to soluble |
| Fresh water | Dispersible |
| Brine | Dispersible |
| Density | 6.9-7.3 lb/gal (0.83-0.87 kg/l) |
VpCI-629 SC
| Appearance | Hazy amber viscous liquid |
| Non-volatile Content | 65-80% |
| Density | 7.8-7.9 lb/gal (0.93-0.94 kg/l) |
VpCI-629 D
| Appearance | Hazy Yellow to amber liquid |
| Non-volatile Content | 9.5-12% |
| pH | 8.8-9.5 (1% aqueous) |
| Pour Point | 15ºF (-17ºC) |
| Density | 6.5-6.7 lb/gal (0.78-0.80 kg/l) |
Packaging and Storage
VpCI-629 products are packaged in 5 gallon (19 liter) plastic containers, 55 gallon (208 liter) metal drums, liquid totes, and bulk. Store product in tightly closed containers. Shelf life is 36 months.