Christian Streicher, Laurent Normand, Eric Lemaire, Ludovic Raynal, Géraldine Laborie PROSERNAT, France and IFP Energies Nouvelles, France
CO2 capture in natural gas is a very common problematic that has been solved for a very wide range of specifications and applications for many years. The most common processes used to sweeten the natural gas are amine based processes. They have been widely implemented in different gas plants. Thanks to this large industrial experience in natural gas, it could be thought that CO2 capture in flue gases would be easily deployed at an industrial scale. In fact, in addition to the technical, regulatory and public perception concerns for CO2 storage, some differences between these two CO2 capture applications have required some development toward industrial low-energy consumption solutions.
In this paper it is shown that PROSERNAT long industrial experience on amine based processes and large capacity units for major Oil & Gas development projects, combined with significant improvements of MEA based processes and developments of new processes carried out with IFP Energies nouvelles, a world leading R&D centre and more specifically expert of CO2 capture technologies, have led to two attractive solutions for CO2 capture in flue gases up to now:
A reliable and attractive solution for CO2 capture in flue gases: HiCapt+TM.
The HiCapt+™ technology uses MEA at 40 % wt with inhibitor against oxidation by O2. This highly reactive advanced formulated MEA results in 5 main advantages:
• Reduced circulation flow rate of solvent, decreasing total hold-up of solvent
• Reduced heat requirement for solvent regeneration thanks to the use of a highly concentrated solvent
• Reduced size of some equipments such as pumps and regenerator column as well as size of bulk material & piping
• Drastic reduction of solvent degradation rate, decreasing solvent consumption and thus reclaiming needs
• Drastic decrease of by-product emission (such as VOC and NH3) due to the efficiency of the anti-oxidative agents
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