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.
关键词
中变催化剂/硝酸铵废水/三效蒸发/尿素硝酸铵液体肥/效益
Key words
medium temperature shift catalysts/ammonium nitrate wastewater/three-effect evaporation/urea ammonium nitrate liquid fertilizer/efficiency
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