A review on CO2 capture with chilled ammonia and CO2 utilization in urea plant

During the past 30 years, the development of technology following the industrial revolution caused an intense increase in energy demand and consequently the concentration of CO2 and greenhouse gases worldwide. Therefore, implementing efficient solutions to reduce emissions of these gases has become one of the most critical challenges of various industries. Many industries, including the petrochemical industry, consider using technology such as Carbon Dioxide Capture and Utilization (CCU) as a potential option to reduce CO2 emissions. Nonetheless, the high cost of CO2 recovery, which is inextricably linked to energy consumption, is one of the most significant challenges of implementing these technologies. This article investigates the possibility of using the new Chilled Ammonia Process (CAP) technology as a promising solution and alternative to traditional methods to recover CO2 from ammonia plant flue gases and reutilize in a urea plant. The advantages of integrating this technology into ammonia and urea plants can be mentioned as capturing SOX and NOX pollutants and CO2 and converting them into high value-added chemical fertilizers, reducing energy consumption and corrosion rate in equipment. But the key benefit that distinguishes this from other CO2 capture technologies is the elimination of the CO2 desorption section due to the formation of ammonium carbamate during the CO2 absorption process. The elimination of the CO2 desorption section can significantly reduce costs and energy consumption.

Automated summary

Over the past 30 years, the increase in energy demand due to technological advancements following the industrial revolution has led to a rise in CO2 and greenhouse gas concentrations globally. Reducing emissions of these gases has become a critical challenge for industries, and Carbon Dioxide Capture and Utilization (CCU) technology is seen as a potential solution. This article explores the possibility of using the new Chilled Ammonia Process (CAP) technology as an alternative method for CO2 recovery from ammonia plant flue gases, highlighting its advantages of capturing pollutants and converting them into valuable chemical fertilizers, while significantly reducing costs and energy consumption.