PSEUDOISOTHERMAL AMMONIA PROCESS
    11.
    发明申请
    PSEUDOISOTHERMAL AMMONIA PROCESS 失效
    PSEUDOISOTHERMAL AMMONIA过程

    公开(公告)号:US20080014137A1

    公开(公告)日:2008-01-17

    申请号:US11780890

    申请日:2007-07-20

    IPC分类号: C01C1/04

    摘要: Ammonia is produced in a reactor in which pseudoisothermal conditions can be approached by convective cooling of a reaction zone of the reactor by positioning at least a portion of the reaction zone in indirect contact with a flow of hot gas such as exhaust gas or preheated air. The hot gas may be supplied from a fired heater, a boiler, a reformer, a process air preheat furnace, a gas turbine, or the like. The reactor converts a feed stream of a purge gas or syngas to ammonia. The method may be implemented in a primary synthesis loop or in a purge gas loop of a new ammonia plant, or by retrofitting an existing ammonia plant. Cooperatively installed with a primary ammonia synthesis loop, the reactor increases total ammonia production.

    摘要翻译: 在反应器中产生氨,其中通过将反应区的至少一部分与热气体例如废气或预热的空气间接接触来使反应区的反应区域对流冷却来接近假温度条件。 热气体可以由燃烧加热器,锅炉,重整器,过程空气预热炉,燃气轮机等供应。 反应器将净化气体或合成气的进料流转化为氨。 该方法可以在新的氨装置的初级合成回路或净化气体回路中进行,或者通过改造现有的氨装置来实施。 与原氨合成回路合作安装,反应器增加了总氨生产量。

    Pseudoisothermal ammonia process
    12.
    发明申请
    Pseudoisothermal ammonia process 失效
    假热氨法

    公开(公告)号:US20060002840A1

    公开(公告)日:2006-01-05

    申请号:US10884323

    申请日:2004-07-02

    IPC分类号: C01C1/04 B01J8/04

    摘要: Ammonia is produced in a reactor 22, 24, 246, 248, 250 or 252, in which pseudoisothermal conditions can be approached by convective cooling of a reaction zone of the reactor by positioning at least a portion of the reaction zone in indirect contact with a flow of hot gas such as exhaust gas 18 or preheated air. The hot gas 18 may be supplied from a fired heater, a boiler 10, a reformer 202, a process air preheat furnace, a gas turbine, or the like. The reactor converts a feed stream of a purge gas 12 or syngas to ammonia. The method may be implemented in a primary synthesis loop (as at 246, 248, 250, 252) or in a purge gas loop 12 of a new ammonia plant, or by retrofitting an existing ammonia plant. Cooperatively installed with a primary ammonia synthesis loop, the reactor increases total ammonia production.

    摘要翻译: 在反应器22,24,246,248,250或252中产生氨,其中可以通过将反应区的至少一部分与反应区的至少一部分间接接触来对抗反应区的反应区,通过对流冷却来接近假温度条件 热气体如排气18或预热空气的流动。 热气体18可以由燃烧加热器,锅炉10,重整器202,工艺空气预热炉,燃气轮机等供给。 反应器将净化气体12或合成气的进料流转化为氨。 该方法可以在新的氨装置的主合成回路(如246,248,250,252)或净化气体回路12中,或者通过改造现有的氨装置来实现。 与原氨合成回路合作安装,反应器增加了总氨生产量。

    Multiple-pressure process for the production of ammonia
    15.
    发明申请
    Multiple-pressure process for the production of ammonia 有权
    用于生产氨的多重压力过程

    公开(公告)号:US20040042951A1

    公开(公告)日:2004-03-04

    申请号:US10416131

    申请日:2003-09-12

    IPC分类号: C01C001/04

    摘要: The invention relates to a process for the production of ammonia from synthesis gas, the synthesis of ammonia from synthesis gas taking place in several lined-up synthesis systems, whereby ammonia is produced from a portion of the synthesis gas in each system with a part-stream being withdrawn and the respective downstream synthesis system being operated at a higher pressure than the respective upstream synthesis system.

    摘要翻译: 本发明涉及一种从合成气中生产氨的方法,在几个排列的合成系统中合成来自合成气的氨,其中从每个系统中的合成气的一部分产生氨, 流被取出,并且相应的下游合成系统在比各个上游合成系统更高的压力下操作。

    Fe.sub.1-x O-based catalyst for ammonia synthesis
    17.
    发明授权
    Fe.sub.1-x O-based catalyst for ammonia synthesis 失效
    用于氨合成的Fe1-xO基催化剂

    公开(公告)号:US5846507A

    公开(公告)日:1998-12-08

    申请号:US637821

    申请日:1996-07-02

    IPC分类号: B01J23/76 C01C1/04 B01J23/745

    摘要: This invention relates to a catalyst for ammonia synthesis. The main phase of the catalyst is a non-stoichiometric ferrous oxide expressed as Fe.sub.1-x O, which is structurally in a Wustite crystal phase form having the rock salt face-centered cubic lattice with lattice paracueter of 0.427-0.433 nm. This catalyst, which has quick reduction rate and high activity, and remarkably lowers the reaction temperature, is especially applicable as an ideal low-temperature, low-pressure ammonia synthesis catalsyt and can be widely used in ammonia synthesis industry.

    摘要翻译: PCT No.PCT / CN94 / 00041 Sec。 371日期:1996年7月2日 102(e)日期1996年7月2日PCT 1994年5月26日PCT公布。 出版物WO95 / 32798 日期1995年12月7日本发明涉及氨合成催化剂。 催化剂的主相是以Fe1-xO表示的非化学计量的氧化亚铁,其结构上为具有0.427-0.433nm的晶格直径的岩盐面心立方晶格的Witeite晶相形式。 该催化剂具有快速还原速率和高活性,显着降低反应温度,特别适用于理想的低温,低压氨合成催化剂,可广泛应用于氨合成工业。