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    炼油与合成气领域中合成气中CO2的脱除

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    从合成气中移除 二氧化碳/ CO2 REMOVAL FROM SYNGAS

    1. 详细信息

    问题
    合成气是碳源(煤、天然气或生物质)与氧气(或空气)以及水蒸气部分氧化产生的。通过气化或甲烷蒸汽转化(SMR)产生的合成气主要含有氢气和一氧化碳,这些有用成分可以作为炼厂、化工厂和电厂的原料。然而,同时会产生相当多的副产物,温室气体CO2。由于下游工艺的需要或为了减少CO2的排放,需要从合成气中脱除CO2。直到现在膜才在这些应用中开始使用,因为以前的膜不能从合成气中分离出CO2

    Polaris™ 解决方案

    独特的北极星膜Polaris™是第一个从合成气中分离出CO2的商用膜。Polaris™膜对CO2的渗透性比其他合成气组分要大得多,可以用来回收和净化CO2用于封存,提高原油采收率(EOR),或化学和工业应用。由此产生的富CO2流可以以气体或液体形式生产,这取决于CO2的最终用途。

    优点

    ■ 高效的CO2回收或去除:膜系统通常可以从原气料中分 离80%的CO2

    ■ 生产高纯度的CO2,可达到95+ vol%

    ■ 装置简单可靠:安装简单,撬装 结构

    ■ 易操作:无需化学品,无环境危害
    ■ 最小的(公用消耗):冷却水、仪表空气、仪表电源,N2
    ■ 膜的寿命长:二氧化碳膜是由高强材料制作

    Problem
    Syngas is produced via partial oxidation of a carbon source (coal, natural gas,  or biomas) using oxygen (or air) and steam.  Syngas produced from gasification or steam methane reforming (SMR) contains mostly hydrogen and carbon monoxide, desirable constituents that are used as feedstock in refineries, chemical processes and power generation.  However, a significant amount of CO2, a greenhouse gas, is also produced as a by-product.  Removal of CO2 is desired due to downstream process requirements or to reduce CO2 emissions.  Until recently, membranes could not be used in these applications because previously available membranes cannot separate CO2 from syngas.

    Polaris™ Solution

    Unique Polaris™ membrane is the first commercially available membrane that separates CO2 from syngas.  The Polaris™ membrane is much more permeable to CO2 than to other syngas constituents and can be used to recover and purify CO2 for sequestration, enhanced oil recovery (EOR), or for use in chemical and industrial applications.  The resulting CO2 enriched stream can be produced in gas or liquid form, depending on the final use for CO2.

    Benefits

    ■  Efficient CO2 recycle or removal: membrane systems can typically separate 80% of feed CO2.

    ■  Produces high purity CO2:  up to 95+ vol%

    ■  Simple reliable unit: easy installation with skid-mounted construction

    ■  Easy to operate: requires no chemicals, no environmental hazards

    ■  Minimal utility usage: cooling water, instrument air, instrument power,  N2 (for purging)

    ■  Long membrane life: CO2 membrane  is made from very robust materials