Simulation and energetic assessment of the ammonia synthesis loop with ionic liquid-Based ammonia recovery from recycle gas

The state-of-the-art in the electroreduction of NOx for the production of ammonia in aqueous and nonaqueous media at ambient conditions: a review

“…14b). Recently, the application of NH 3 separation and recovery in ILs has been proved, which is two-fold: 111 energy conservation and emission reduction. As supporting electrolytes, ILs have been extended further, which is auspicious for the electrocatalytic process, which could lower the overpotential as well as the free energy required by the intermediates.…”

Techno-Economic Evaluation of Green NH3 Production by Integrating Current-Assisted Reaction and Ionic Liquid Absorption

“…The calculation results showed that the NH 3 concentration in the purified gas can be reduced to 1000 and 6000 ppm, respectively, and the total purification cost (TPC) was reduced by 58% and 61% compared with the conventional purification process. Shi et al applied the absorption process based on IL to the purification of recycle gas (the mole fraction of NH 3 is about 6%) in the NH 3 synthesis loop, but most of NH 3 was still separated by condensation. As the performance of the catalyst increases, the reaction pressure in the distributed NH 3 production process may be reduced to less than 50 bar, so the generated gas needs to be further pressurized to condense most of the NH 3 at room temperature, which consumes a lot of energy. , Therefore, it is necessary to study a new NH 3 synthesis loop by coupling the NH 3 synthesis process under mild conditions with the separation process by IL absorption for the promotion of distributed NH 3 production.…”