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US4296252A
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Urea synthesis process
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US4094903A
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Urea synthesis with improved heat recovery and conversion
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US4088685A
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Urea synthesis with improved heat recovery and conversion
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US4088684A
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Urea reactor effluent solution recycle in urea synthesis
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US3981684A
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Apparatus for controlling urea system
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US3933956A
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Process for prilling urea
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US3940440A
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Method of controlling urea system
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FR2224452A1
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Urea synthesis appts. simplification - in which ammonia is sepd. before decompsn of the by-product ammonium carbamate
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DE2362887A1
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Ammonia recovery from weak aq. solns. - by stripping with steam and an inert gas to recover all ammonia as overheads
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ES416959A3
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A urea synthesis procedure with recycle for the formation of urea. (Machine-translation by Google Translate, not legally binding)
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DE2331015A1
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PROCESS FOR RECOVERING REMAINING AMMONIA FROM WEAK AQUATIC SOLUTIONS OF THE SAME
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US3886210A
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Urea synthesis with improved heat recovery and ammonium carbamate recirculation
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ES415875A1
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Procedure to recover ammonia from a water-based ammonia solution. (Machine-translation by Google Translate, not legally binding)
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CA992024A
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Recovery of residual ammonia from weak aqueous solutions thereof
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US3864091A
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Apparatus for the decomposition of ammonium carbamate
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CA966617A
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Process for prilling urea
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US3952055A
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Urea synthesis with improved heat recovery and conversion
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US3929878A
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Decomposition of ammonium carbamate
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ES390122A3
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A procedure of urea synthesis by ammonia reaction and carbon dioxide. (Machine-translation by Google Translate, not legally binding)
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ES389887A1
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A procedure of urea production. (Machine-translation by Google Translate, not legally binding)
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