Problems in calculating the energy consumption for ammonia synthesis
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Standard GB21344, \"Limits on Energy Consumption per Unit of Product for Ammonia Synthesis,\" sets out the allowable values for energy consumption per unit of product for new ammonia synthesis plants. So, when calculating the energy consumption for enterprises that produce products such as urea and compound fertilizers, should the energy consumption of the main system be considered up to the stage of ammonia synthesis? And how should the inputs and outputs of auxiliary systems such as the fresh water system and wastewater treatment systems be separated?
Urea should be calculated separately; for example, the consumption of liquid ammonia, circulating water, demineralized water, steam, and electricity should be taken into account, as these are independent of the previous systems.