Chemical looping is an attractive technology which can produce three pure streams of N2, H2 and CO2.
In this paper, for the first time, a novel and green plant configuration is proposed for urea production
in which chemical looping process is used as primary stage to prepare feedstock of urea synthesis unit.
The proposed plant is intended by reduction in the number of operating units within heat and power
integration which provides significant potential for investment cost reduction. Due to the reduction in
the number of plant units and also production of economically valuable intermediate streams of N2,
H2, CO2 and NH3, the proposed plant provides more technical flexibility compared to the conventional
technologies. Economic evaluation ofthe proposed plant shows a considerable rate of return and financial
interest. In the different production rate,the proposed plant has a rate of return (IRR) above 28%, while the
IRR of conventional plants is almost near 20%. Moreover, a combined process of novel and conventional
plants is presented which produces urea without any by-product.