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    炼油与合成气领域中甲醇厂弛放气中回收氢气

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    从甲醇装置驰放气中回 收氢气/HYDROGEN RECOVERY FROM METHANOL PLANT PURGE GAS

    1. 详细信息

    在甲醇生产过程中,通过天然气蒸汽转化制取合成气,合成气经压缩后反应生成甲醇,未参加反应的合成气返回到反应器中。通常合成气中氢碳比大于2(甲醇合成需要的比例值),因此多余的氢气需要通过从反应器回路中排放一部分富氢物流来脱除并被送做燃料。

    VaporSep-H2™ 方案

    如果这个装置的其他地方用到氢气, VaporSep-H2™ 膜能从这些排放气中回收相当纯的氢气。

    优点

    ■ 从甲醇厂排放气中回收有用的氢气

    ■ 不需要额外的旋转设备
    ■ 无源系统,操作方便

    ■ 常温操作

    ■ 撬装结构安装简单

    Problem
    In methanol production, synthesis gas is generated by reforming natural gas with steam. The synthesis gas is compressed and then reacted to form methanol. Unreacted syngas is recycled to the reactor. Since the normal  ratio of hydrogen to carbon in the synthesis gas is greater than 2 ( the value required for methanol synthesis), excess hydrogen is removed by purging a hydrogen rich stream from the reactor loop and sending it to fuel.

    VaporSep-H2™ Solution

    If there is a use for hydrogen elsewhere in the facility, MTR’s VaporSep-H2™ membranes can be used to recover relatively pure hydrogen from this purge gas.

    Benefits

    ■  Recovers useful hydrogen from methanol plant purge gas

    ■  Requires no additional rotating equipment

    ■  Easy to operate, passive system

    ■  Ambient temperature operation

    ■  Simple installation with  skid-mounted construction