SECOHYA Project

Context
CO2 is one of the principal gases responsible of the green house effect. In France, it represents 69.1%, to be compared to methane (12.5%), N2O (15.8%) and PFC, HFC, SF6 (2.2%). Industry is the source of 21% of the CO2 emission. In comparison to transport (27%), buildings (20%), agriculture (16%), the industry gas emitters are generally located on specific geographic zone, or specific unities. For example, steel making plants represent 1/3 of the total industry CO2 emission. In addition, the carbon content is a high value, from 24% to 36% CO2. Another example is the energy production industry which is responsible of 13% of the CO2 emission, also on specific sites, but with a lower content CO2, less than 10% vol.

The SEparation of CO2 by HYdrate Absorption project aims at developing a new technology to capture CO2 from a gas mixture by hydrate crystallization.
We are carrying out experiments in using quaternary ammonium (TBAB) as additive which makes hydrate crystallization condition milder. Based on experimental results, we did simulations to evaluate the operative and capital cost of such a process, for different qualities of gases.

- Apparatus
- The ULCOS application for CO2-N2 separation
- CO2 capture in other contexts