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Our Technologies

HPC – VoidCapture®

The HPC – VoidCapture® scheme capitalizes on the unique property of the GV solution to regenerate at pressures below atmospheric. This characteristic enables a lower stripping temperature, facilitating the use of waste heat as a thermal source. A vacuum pump is employed to maintain the reduced pressure during the stripping process, creating a mild vacuum condition.

This scheme can complement other GV schemes by serving as an additional stripping stage. Despite its higher electricity consumption, this configuration offers the potential to decrease or eliminate the need for external thermal energy.

The HPC – VoidCapture® scheme is most suitable for applications where waste heat is available, even at temperatures below 100°C, which would otherwise go unused.

The scheme has undergone successful testing in multiple campaigns at the pilot plant level. There are ongoing plans to further advance its Technology Readiness Level (TRL) through implementation in a demonstrative capture plant operating on flue gas from a waste incineration process.

HPC – VoidCapture®
  • Can profitably use waste heat sources
Our Customizations

Designing Excellence

In addition to various regeneration schemes, the CO2 capture units by Giammarco-Vetrocoke can be equipped with numerous customizable features based on the specific application. Below is a non-exhaustive list of possibilities that can be adopted:

1. Number of Absorption and Regeneration Stages
The capture method can involve single-stage absorption/stripping, split stream (solution fed into the absorber at different temperatures), or dual-stage, depending on the specific application and the desired capture target.

2. Solvent Type
All formulations are based on Hot Potassium Carbonate salt dissolved in water. However, depending on the application, they can be either singly activated, doubly activated, Oxygen Proof type, or without any promoter at all.

Solution is not toxic, free from foaming and corrosion, and all solution formulations are freely available on the market and not tied to single vendors.

3. CO2 Purity
Depending on the specific requirement for CO2 purity at battery limits, a device can be installed to release any gases physically absorbed with the solution, thereby increasing the purity level of the final carbon dioxide. A further improvement can be implemented in order to increase the CO2 purity and, at the same time, reduce the CO2 loss.

4. Thermal Energy Reuse
In general, CO2 capture using the HPC (Hot Potassium Carbonate) process needs an external heat source for the solvent regeneration. However, this heat is almost entirely recovered and can be reused for DMW preheating, District Heating, or other integrations that dramatically reduce the net OpEx of the capture island.

HPC – VoidCapture®
  • Can profitably use waste heat sources