Production of urea ammonium nitrate liquid fertilizer from wastewater generated by medium temperature shift catalysts
Gansu NenghuaJinchang Energy and Chemical Co.,Ltd produces approximately 3%to 4%ammonium nitrate wastewater during the production of synthetic ammonia medium temperature shift catalystsmedium temperature shift catalyst NB113.The wastewater is evaporated and concentrated through a three-effect evaporation device,with a concentration of over 65%,and then added to the melted urea in a certain proportion,configured to meet the Ministry of Agriculture issued by the NY2670-2015 standard of ammonium urea nitrate solution of liquid fertilizers.Ammonium nitrate in wastewater was recovered and made into liquid fertilizer,obtaining certain economic benefits,while reducing ammonia nitrogen(NH3-N)in the discharged wastewater to achieve energy-saving,emission reduction and efficiency purposes.
medium temperature shift catalystsammonium nitrate wastewaterthree-effect evaporationurea ammonium nitrate liquid fertilizerefficiency
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