Urea

Introduction carbamide is synthetic origined nitrogenous material, NH2 CO NH2. Its nitrogen message is 46.6 %( when pure). At room temperature carbamide is colorless, odorless and tasteless. When it is turn in water it hydrolyzes very slowly to ammonia and blow dioxide. Urea today occupies the key smudge amongst the various substantive nitrogenous plant foods by virtue of its highest content which chuck up the sponge a consumption saving in transportation and distribution cost. The puzzle out of carbamide synthesis is of immense vastness as it was the first organic compound to be synthesized from inorganic compound in laboratory. Wholer obtained urea from ammonium cyanide in 1828. Today various manufacturing process use the chemical answer between liquid ammonia and carbon dioxide gas to spring ammonia carbonate which on the sub sequent desiccation yield urea and water. The technology and engineering if urea return has therefore undergone rapid develop ment in the last demon decades so with the result that stream plants of 1500 MTPD subject matter and tear down higher have been designed and engineered. The chemical fertilizer manufacturing in India started during the early 40s with only two trivial plants, today it is the fourth producer of fertilizer and occupies the trey position in the fertilizer consumption in world. cook up of Urea Urea is commercially produced by the unionise vapour of ammonium carbonate (NH2COONH4) at elevated temperature and pressure. NH2COONH4 is obtained by direct reaction of NH4 and CO2. The two reactions are usually carried out concurrently in a high pressure reactor. ?H = -38000 cal/gmol ?H = +7500 cal/gmol richness of Urea ! 1.Fertilizer grade urea is mainly employ as fertilizer in the form of prills. 90% of urea produced in India is used...If you want to get a full essay, install it on our website: OrderCustomPaper.com

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