Dear santosh Shahajirao,

Urea Phosphate Production

H3PO4 + NH2CONH2  → CO (NH2 )2.H3PO4

According to the above reaction, one mole of phosphoric acid is required to react with one mole of urea to give one mole of urea phosphate. This exothermic reaction has been studied by a number of investigators to produce the urea phosphate crystals. two-stage continuous crystallization process for production of urea phosphate by reaction of impure wet-process orthophosphoric acid (about 54% P2O5) and urea with simultaneous addition of a selected acidifying agent (sulfuric acid, hydrochloric acid, or phosphoric acid) to the reaction mixture where the purity of the crystalline urea phosphate product was improved. using wet process dihydrate method to produce phosphoric acid and gypsum. The mixture product reacts (with 1.1 mole to 1 mole of) phosphoric acid on leaving the second reactor or after crystallization of the gypsum in a pipe reactor. Then the product mixture is filtered from gypsum by a centrifuge, transported to the cooling tower, acidified with 1% sulfuric acid, where production of crystals in hydrocyclone and separation by centrifuge and drying it by air stream in a drier.

https://www.google.co.in/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjhy9DzxZzMAhXCkZQKHa9NCNAQFgghMAA&url=http%3A%2F%2Fpubs.acs.org%2Fdoi%2Fabs%2F10.1021%2Fje60067a016&usg=AFQjCNExpYJ9RnNC3KhZhCGqPOAmnlPuqg&sig2=BbRrfwEVhMWzQ3QjuTxazw

Article Production of high-quality liquid fertilizers from wet-proce...

 Process for the manufacture of crystalline urea phosphate

http://www.google.com/patents/US3936501

Dear Sir

Thank U for your valuable response