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    Desulfurization process
    1.
    发明授权
    Desulfurization process 失效
    脱硫工艺

    公开(公告)号：US4917874A

    公开(公告)日：1990-04-17

    申请号：US211493

    申请日：1988-06-24

    申请人： Atul C. Sheth ,  William A. Butler

    发明人： Atul C. Sheth ,  William A. Butler

    IPC分类号： B01D53/50 ,  C01B17/96 ,  C01D5/16

    CPC分类号： C01D5/16 ,  B01D53/501 ,  C01B17/96

    摘要： Alkali metal sulfates are converted to a sulfur-free form by dissolving the alkali metal sulfate in water to produce an aqueous solution containing alkali metal ions and sulfate ions at a pH below about 8, and then passing the solution through a weak base, anion exchange resin having bicarbonate ions associated therewith that exchange with the sulfate ions so that the sulfate ions become associated with the resin and the bicarbonate ions become associated with the alkali metal ions in the solution. The resin can be regenerated to the bicarbonate form by treatment with an ammonium hydroxide solution followed by contact with carbon dioxide and the regeneration by-products are commercially useful.

    摘要翻译： 碱金属硫酸盐通过将碱金属硫酸盐溶解在水中而形成无硫形式，以在低于约8的pH下产生含有碱金属离子和硫酸根离子的水溶液，然后使溶液通过弱碱，阴离子交换 具有与其结合的碳酸氢根离子的树脂与硫酸根离子交换，使得硫酸根离子与树脂相关联，并且碳酸氢根离子与溶液中的碱金属离子相关联。 通过用氢氧化铵溶液处理然后与二氧化碳接触可将树脂再生成碳酸氢盐形式，再生副产物在商业上是有用的。

    Desulfurization process
    5.
    发明授权
    Desulfurization process 失效
    脱硫工艺

    公开(公告)号：US5059406A

    公开(公告)日：1991-10-22

    申请号：US510101

    申请日：1990-04-17

    申请人： Atul C. Sheth ,  William A. Butler

    发明人： Atul C. Sheth ,  William A. Butler

    IPC分类号： B01D53/50

    CPC分类号： B01D53/508

    摘要： The specification discloses a desulfurization process for use in a fossel fuel combustion process involving the generation of a flue gas product containing sulfur oxides and halogen compounds wherein an alkali metal compound is contacted with the gas resulting in the removal of sulfur oxides from the gas and formation of a water-soluble residue comprising alkali metal sulfates and alkali metal halides, which residue is collected from the gas before the gas is released to the environment. The process is adapted to recover the alkali metal ions from the collected residue for use in supplying the alkali metal ions that are contacted with the gas and for limiting the presence co-collected halogen ions within the recovered alkali metal ions. The process comprises dissolving the collected residue in water to form an aqueous solution thereof having a pH of less than about 8 so that sulfate ions, halogen ions and alkali metal ions are present in the solution. Thereafter, the solution is contacted with a weak base anion-exchange resin having bicarbonate groups associated therewith that exchange with sulfate and halogen ions in the solution so that the sulfate and halogen ions become associated with the resin and the bicarbonate groups become associated with the alkali metal ions in the solution. As a result, the alkali metal ions are separated from the sulfate ions and halogen ions for use in supplying the alkali metal compound that is contacted with the gas.

    摘要翻译： 本说明书公开了一种用于燃料燃烧方法的脱硫方法，该方法涉及产生含有硫氧化物和卤素化合物的烟道气产物，其中碱金属化合物与气体接触，从气体和地层中除去硫氧化物 包含碱金属硫酸盐和碱金属卤化物的水溶性残渣，在气体释放到环境之前，残留物从气体中收集。 该方法适用于从收集的残余物中回收碱金属离子，以用于供应与气体接触的碱金属离子，并限制回收的碱金属离子内的共同收集的卤素离子。 该方法包括将收集的残余物溶解在水中以形成其pH低于约8的水溶液，使得溶液中存在硫酸根离子，卤素离子和碱金属离子。 此后，将溶液与具有与其结合的具有碳酸氢根的弱碱阴离子交换树脂与溶液中的硫酸盐和卤素离子交换，使得硫酸盐和卤素离子与树脂相关联，并且碳酸氢盐基团与碱相关联 溶液中的金属离子。 结果，碱金属离子与用于供给与气体接触的碱金属化合物的硫酸根离子和卤素离子分离。