公开(公告)号：US20140018575A1

公开(公告)日：2014-01-16

申请号：US14007100

申请日：2012-02-10

申请人： Ermanno Filippi ,  Marco Badano ,  Frederico Zardi ,  Andrea Scotto

发明人： Ermanno Filippi ,  Marco Badano ,  Frederico Zardi ,  Andrea Scotto

IPC分类号： C07C273/10

CPC分类号： C07C273/10 ,  C01C1/0488 ,  Y02P20/52 ,  C07C275/02

摘要： A process for ammonia -urea production where: liquid ammonia produced in an ammonia section is fed to a urea section directly at the ammonia synthesis pressure, and where the liquid ammonia is purified at high pressure with the steps of: cooling the liquid ammonia (20) obtaining a cooled liquid ammonia stream (21), separating a gaseous fraction (22) comprising hydrogen and nitrogen from said cooled liquid ammonia, obtaining purified liquid ammonia (23) at a high pressure, and reheating said purified liquid ammonia (23) after separation of said gaseous fraction, obtaining a reheated purified ammonia (24) having a temperature suitable for feeding to the urea synthesis process. The application also deals with an ammonia -urea plant comprising an ammonia cooler, a liquid-gas separator and an ammonia re-heater and with a method for revamping existing ammonia -urea plants.

摘要翻译： 一种氨 - 脲生产方法，其中在氨段产生的液氨直接以氨合成压力供给到尿素部分，并且液氨在高压下被纯化，其步骤是：冷却液氨（20 获得冷却的液氨流（21），从所述冷却的液氨中分离包含氢和氮的气态馏分（22），在高压下获得纯化液氨（23），并在 分离所述气态馏分，获得具有适于供给到尿素合成方法的温度的再加热的纯化氨（24）。 本申请还涉及一种氨脲装置，其包括氨冷却器，液气分离器和氨再加热器以及用于改造现有氨 - 脲装置的方法。