A PROCESS FOR CO-PRODUCTION OF AMMONIA, UREA AND METHANOL
    10.
    发明申请
    A PROCESS FOR CO-PRODUCTION OF AMMONIA, UREA AND METHANOL 有权
    一种生产氨,尿素和甲醇的方法

    公开(公告)号:US20160083260A1

    公开(公告)日:2016-03-24

    申请号:US14787797

    申请日:2014-04-16

    发明人: Per Juul Dahl

    摘要: A process for co-production of ammonia, urea and methanol from natural gas, comprising the steps of (a) producing a synthesis gas by simultaneous feeding natural gas to an autothermal reformer (ATR) and to a steam methane reformer (SMR), the two reformers running in parallel, (b) feeding air to an air separation unit (ASU), where the air is split into oxygen, which is fed to the ATR, and nitrogen, (c) subjecting the synthesis gas from the SMR to a water gas shift, (d) removing the carbon dioxide from the synthesis gas from step (c) and leading it to urea synthesis in a urea synthesis unit, (e) combining the hydrogen-rich gas from step (d) with the nitrogen from step (b), removing catalyst poisons from the gases and leading the gas mixture to ammonia synthesis in an ammonia synthesis unit, (f) optionally removing part of the carbon dioxide from the syngas from the ATR in step (a) and leading it to urea synthesis in a urea synthesis unit and (g) leading the syngas from step (f) to the methanol synthesis unit, wherein synthesis gas from step (a) may be led either from the ATR outlet to the SMR outlet upstream from the shift stage or the other way.

    摘要翻译: 一种从天然气共同生产氨,尿素和甲醇的方法,包括以下步骤:(a)通过同时将天然气同时供给到自热重整器(ATR)和蒸汽甲烷重整器(SMR)来生产合成气, 两台并联运行的改质器,(b)将空气送入空气分离装置(ASU),空气分离成氧气,送入ATR,氮气,(c)使来自SMR的合成气体 (d)从步骤(c)的合成气中除去二氧化碳,并导致尿素合成单元中的尿素合成,(e)将来自步骤(d)的富氢气体与来自 步骤(b)中,从气体中除去催化剂毒物并将氨气合成装置导入氨合成,(f)在步骤(a)中任选地从合成气中除去部分二氧化碳,并将其导入 在尿素合成单元中的尿素合成和(g)将来自步骤(f)的合成气引导到我 其中来自步骤(a)的合成气可以从ATR出口或从换档级上游的SMR出口或其它方式引导。