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    • 5. 发明授权
    • Electrodeionization apparatus with scaling control
    • 具有缩放控制功能的电离装置
    • US06296751B1
    • 2001-10-02
    • US09526658
    • 2000-03-15
    • Leon Mir
    • Leon Mir
    • B01D6148
    • B01D61/48B01J47/08C02F1/42C02F1/4604C02F1/4695C02F2201/46115
    • First and second stages are used in electrodeionization to purify water including calcium and carbon dioxide and its hydrates. The diluting flow channels of the first stage include only anion exchange material or cation exchange material, and thus remove either carbon dioxide and its hydrates (and other anions) or calcium (and other cations) but not the other. The diluting flow channels of the second stage receive the diluting channel effluent from the first stage and include the other type of exchange resin (or a mixed resin) and remove the oppositely charged ions. The brine effluent from the concentrating flow channels in the first stage is isolated from the second stage, and calcium and total inorganic carbon tend to be removed in different stages so as to deter calcium carbonate precipitation in any of the concentrating flow channels. Also the concentrating channels can include cation exchange material next to the anion membrane, with pH being lowered at the surface of the anion so as to limit calcium carbonate precipitation in the concentrating flow channel. Also disclosed are using countercurrent flow in the diluting flow channels and the concentrating flow channels and flowing the feed to the concentrating compartment first through a region that renders it substantially acidic before it enters a region that contains calcium.
    • 第一和第二阶段用于去离子水以净化包括钙和二氧化碳及其水合物的水。 第一阶段的稀释流动通道仅包括阴离子交换材料或阳离子交换材料,因此除去二氧化碳及其水合物(和其它阴离子)或钙(和其它阳离子)而不是另一种。 第二阶段的稀释流动通道接收来自第一阶段的稀释通道流出物,并且包括另一种类型的交换树脂(或混合树脂)并除去带相反电荷的离子。 来自第一阶段的浓缩流动通道的盐水流出物与第二阶段分离,并且钙和总无机碳倾向于在不同的阶段被去除,以便阻止任何浓缩流动通道中的碳酸钙沉淀。 此外,浓缩通道可以包括在阴离子膜旁边的阳离子交换材料,其pH在阴离子的表面降低,以限制浓缩流动通道中的碳酸钙沉淀。 还公开了在稀释流动通道和浓缩流动通道中使用逆流,并且将进料流经浓缩室首先通过使其在进入含钙的区域之前呈现基本上为酸性的区域。
    • 6. 发明授权
    • Electrodeionization apparatus with scaling control
    • 具有缩放控制功能的电离装置
    • US06187162B1
    • 2001-02-13
    • US09395327
    • 1999-09-13
    • Leon Mir
    • Leon Mir
    • B01D6148
    • C02F1/4695B01D61/48B01J47/08C02F1/42C02F1/4604C02F2201/46115
    • First and second stages are used in electrodeionization to purify water including calcium and carbon dioxide and its hydrates. The diluting flow channels of the first stage include only anion exchange material or cation exchange material, and thus remove either carbon dioxide and its hydrates (and other anions) or calcium (and other cations) but not the other. The diluting flow channels of the second stage receive the diluting channel effluent from the first stage and include the other type of exchange resin (or a mixed resin) and remove the oppositely charged ions. The brine effluent from the concentrating flow channels in the first stage is isolated from the second stage, and calcium and total inorganic carbon tend to be removed in different stages so as to deter calcium carbonate precipitation in any of the concentrating flow channels. Also the concentrating channels can include cation exchange material next the anion membrane, with pH being lowered at the surface of the anion so as to limit calcium carbonate precipitation in the concentrating flow channel.
    • 第一和第二阶段用于去离子水以净化包括钙和二氧化碳及其水合物的水。 第一阶段的稀释流动通道仅包括阴离子交换材料或阳离子交换材料,因此除去二氧化碳及其水合物(和其它阴离子)或钙(和其它阳离子)而不是另一种。 第二阶段的稀释流动通道接收来自第一阶段的稀释通道流出物,并且包括另一种类型的交换树脂(或混合树脂)并除去带相反电荷的离子。 来自第一阶段的浓缩流动通道的盐水流出物与第二阶段分离,并且钙和总无机碳倾向于在不同的阶段被去除,以便阻止任何浓缩流动通道中的碳酸钙沉淀。 此外,浓缩通道可以包括阴离子膜旁边的阳离子交换材料,pH在阴离子表面降低,以限制浓缩流动通道中的碳酸钙沉淀。