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    • 7. 发明公开
    • 요소 제조 방법 및 관련 플랜트
    • 乌拉圭生产过程和相关工厂
    • KR1020070110118A
    • 2007-11-15
    • KR1020077022618
    • 2005-11-15
    • 우레아 카잘레 에스.에이.
    • 로미티,도메니코스티치,파올로
    • C07C273/04C07C273/02C07C273/14B01J19/24
    • C07C273/04B01J2219/00006B01J2219/00103B01J2219/00108B01J2219/182B01J2219/185Y02P20/142
    • A process for urea production from ammonia and carbon dioxide, made to react at a predetermined high pressure in an appropriate synthesis reactor (112), from the reaction between NH3 and C02 being obtained a reaction mixture comprising urea, ammonium carbamate and free ammonia in aqueous solution, from which a recovery of ammonium carbamate and ammonia is carried out with their subsequent recycle to the synthesis reactor (112), said recovery from the reaction mixture taking place through operative steps of decomposition of the ammonium carbamate into NH3 and CO2 and of their stripping and a subsequent operative step of their recondensation into ammonium carbamate that is recycled to the synthesis reactor, the said reaction mixture obtained from the reaction between ammonia and carbon dioxide being pumped to the operative steps of decomposition and stripping.
    • 由氨和二氧化碳制备的尿素在合适的合成反应器(112)中由NH 3和CO 2之间的反应在预定的高压下反应,得到包含尿素,氨基甲酸铵和游离氨水溶液的反应混合物 溶液,其中氨基甲酸铵和氨的回收率随后再循环到合成反应器(112)中,所述从反应混合物中回收,通过氨基甲酸铵分解成NH 3和CO 2以及它们的操作步骤进行 汽提和随后的将其再缩合成氨基甲酸铵再循环到合成反应器中的操作步骤,将从氨和二氧化碳之间的反应获得的所述反应混合物泵送到分解和汽提的操作步骤。
    • 8. 发明公开
    • 암모니아 생산공장과 요소생산공장의 동시적 현대화 방법
    • 氨基酸和尿素生产植物的同时现代化
    • KR1020010020685A
    • 2001-03-15
    • KR1020000015658
    • 2000-03-28
    • 우레아 카잘레 에스.에이.
    • 파가니,지오르지오자르디,페드리코
    • C01C1/00
    • C01C1/0488C07C273/10Y02P20/52
    • PURPOSE: Disclosed is a method for simultaneously modernizing the subjects plants by a technically easily method which adds a carbamic acid synthesis and decomposition section to the existing sections, to increase production capacity of each plant and reduce energy consumption at a low investment cost. CONSTITUTION: This method is to add a carbamic acid synthesis and decomposition section to the existing sections of an ammonia and urea production plant. The added sections include means for, e.g. supplying the compressed unrefined ammonia synthesis gas flow containing carbon dioxide, hydrogen and nitrogen to the carbamic acid synthesis section; supplying part of the flow from the ammonia synthesis section, containing ammonia, hydrogen and nitrogen, to the carbamic acid synthesis section; supplying at least part of the flow from the urea recovering section, containing carbamic acid in the aqueous solution, to the carbamic acid decomposition section, and supplying the flow from the decomposition section, containing ammonia vapor and carbon dioxide gas, to the urea synthesis section.
    • 目的:公开一种通过技术上容易的方法对现有植物进行现代化改造的方法,该方法向现有部分添加氨基甲酸合成和分解部分,以增加每个工厂的生产能力并以低投资成本降低能耗。 规定:该方法是向氨和尿素生产装置的现有部分添加氨基甲酸合成和分解部分。 添加的部分包括用于例如, 将含有二氧化碳,氢气和氮气的压缩的未精炼氨合成气流供应到氨基甲酸合成段; 将来自氨合成部分的含有氨,氢和氮的部分流量供给到氨基甲酸合成部分; 将含有氨基甲酸的尿素回收部的至少一部分流量供给到氨基甲酸分解部,并将含有氨蒸汽和二氧化碳气体的分解部的流体供给到尿素合成部 。