Stamicarbon has won a contract for a large-scale urea project in China. The urea plant, with a production capacity of 3,800 t/d, will be the largest ever licensed by Stamicarbon in the country. The customer, the plant’s location and the value of the contract have not been disclosed.
This UreaKnowHow.com round table discusses the process upset condition of a high urea concentration in the ammonium carbamate recycle. It is commonly known that the urea formation reaction from ammonia and carbon dioxide via ammonium carbamate is an equilibrium reaction and that the urea conversion in any urea plant is limited. That is why downstream of the urea synthesis section the urea is separated from the ammonium carbamate in a recirculation section. Ammonium carbamate is dissociated into ammonia and carbon dioxide gases by means of low pressure and the addition of heat. The ammonia and carbon dioxide gases are dissolved in water and recycled back to the urea synthesis section. The urea content should be minimal as urea in the ammonium carbamate recycle leads to lower efficiencies. What are the causes and remedies for a high urea concentration in the ammonium carbamate recycle? n
The market is anticipated to correct lower throughout the rest of the first quarter. Once a clearer picture over seasonal fertilizer demand in Europe emerges, this could stabilise downward momentum.
Fulcrum BioEnergy says that it has successfully produced low-carbon synthetic crude oil using landfill waste as a feedstock at its Sierra BioFuels Plant, the world’s first commercial-scale landfill waste-to-fuels plant. Located outside of Reno, Nevada, Sierra will produce approximately 11 million gallons of renewable, low-carbon transportation fuels each year from approximately 175,000 t/a of landfill waste.
Air Liquide presents the results of an internal study to identify preferred natural gas-based plant configurations at a methanol capacity of 250 t/d. Delivering small capacity plants requires a focus on the total cost of ownership (TCO) for the economics to be successful, in addition to the CO 2 footprint of the operation. As found by this study, SMR concepts are naturally power balanced for standalone greenfield operations and show no particular advantage for power import in a brownfield setting. POX and ATR cases are greatly improved and even advantaged in a brownfield setting compared to SMR when shifting from power balance to power import cases.
Advanced Methanol Amsterdam (AMA) is a production facility, that will be realised in the Port of Amsterdam's Biopark, which is destined to produce advanced methanol that meets the European renewable energy directive (RED) requirements. Once completed, AMA will be the flagship production site for GIDynamics and GIDARA Energy and for its High Temperature Winkler (HTW ® ) gasification technology. AMA will also be the first of its kind green methanol unit designed by Casale.