Method for producing a fertilizer containing urea and ammonium sulphate

Method for producing a fertilizer containing urea and ammonium sulphate

  • CN 101,006,011 B
  • Filed: 06/30/2005
  • Issued: 05/24/2017
  • Est. Priority Date: 07/01/2004
  • Status: Active Grant
First Claim
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1. the method for producing solid urea ammonium sulphate fertilizer, wherein- by reacting CO in urea reactors2And NH3To form urea, and- reactor of urea synthesis ammonium sulfate, wherein free ammonia and/or work will be transported to from the technique stream for producing ureaIt is with amino formate and sulfuric acid reaction to be decomposed, urine substantially not in decomposition technique stream from urea productionElement;

  • It is characterized in that- tubular reactor the situ in higher-pressure region downstream is synthesized urea ammonium sulfate, whereinClosed with amino formate to be decomposed and sulfuric acid reaction by the ammonia of free form or as from urea productionInto ammonium sulfate, and- urea and ammonium sulfate are mixed and granulates to form solid urea ammonium sulphate particle;

    The water being wherein contained in urea/ammonia base formates/aqueous solution is not recycled to reactor for synthesis of urea;

    AndThe introducing head of wherein tubular reactor is designed so that and obtain degree of mixing high to limit free acid and urine in reactor headTime of contact between element, so as to promote the reaction of acid and ammonia, reduce the loss of urea.

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