公开(公告)号：US20160145113A1

公开(公告)日：2016-05-26

申请号：US14786062

申请日：2014-04-16

Applicant: HALDOR TOPSØE A/S

Inventor： Niels Ulrik Andersen ,  Christian Speth

IPC: C01C1/04 ,  C01B3/34

CPC classification number: C01C1/04 ,  B01J19/0013 ,  C01B3/025 ,  C01B3/34 ,  C01B3/48 ,  C01B2203/0211 ,  C01B2203/0233 ,  C01B2203/0283 ,  C01B2203/0288 ,  C01B2203/047 ,  C01B2203/0475 ,  C01B2203/068 ,  C01B2203/142 ,  C01B2203/147 ,  C01B2203/16 ,  C01B2203/1604 ,  C01B2203/1638

Abstract: In an ammonia or hydrogen plant comprising a desulfurisation section, a reforming section and a shift section, where the shift section comprises a low temperature shift converter and a medium temperature shift converter, a vent line is arranged downstream from the low temperature shift converter and the medium temperature shift converter in order to allow the shift converters to be re-heated with process gas at a low pressure (typically 3-7 bar). This way condensation of water vapour in the process gas is avoided. By applying this vent line it becomes possible to save significant time, more specifically 8-24 hours, for restarting the production after temporary shut-down thereof, because a heat-up of the LTS/MTS converter in circulating nitrogen is avoided.

Abstract translation: 在包括脱硫部分，重整部分和换挡部分的氨或氢装置中，其中换档部分包括低温变换转换器和中温转换转换器，排气管线布置在低温变换器的下游，并且 中等温度移位转换器，以便允许变速器以低压（通常为3-7巴）的过程气体重新加热。 这样避免了工艺气体中的水蒸气冷凝。 通过应用该排气管线，由于在循环氮气中加热LTS / MTS转化器，可以节省大量时间，更具体地说是8-24小时，用于在临时关闭之后重新开始生产。

公开(公告)号：US09695058B2

公开(公告)日：2017-07-04

申请号：US14786062

申请日：2014-04-16

Applicant: Haldor Topsøe A/S

Inventor： Niels Ulrik Andersen ,  Christian Speth

IPC: C01C1/04 ,  C01B3/34 ,  B01J19/00 ,  C01B3/02 ,  C01B3/48

CPC classification number: C01C1/04 ,  B01J19/0013 ,  C01B3/025 ,  C01B3/34 ,  C01B3/48 ,  C01B2203/0211 ,  C01B2203/0233 ,  C01B2203/0283 ,  C01B2203/0288 ,  C01B2203/047 ,  C01B2203/0475 ,  C01B2203/068 ,  C01B2203/142 ,  C01B2203/147 ,  C01B2203/16 ,  C01B2203/1604 ,  C01B2203/1638

Abstract: In an ammonia or hydrogen plant comprising a desulfurisation section, a reforming section and a shift section, where the shift section comprises a low temperature shift converter and a medium temperature shift converter, a vent line is arranged downstream from the low temperature shift converter and the medium temperature shift converter in order to allow the shift converters to be re-heated with process gas at a low pressure (typically 3-7 bar). This way condensation of water vapour in the process gas is avoided. By applying this vent line it becomes possible to save significant time, more specifically 8-24 hours, for restarting the production after temporary shut-down thereof, because a heat-up of the LTS/MTS converter in circulating nitrogen is avoided.