Separation of Sulfur from Liquid or Vapor
Sulfur occurs widely in nature in the oxidized and reduced forms.
S
Sulfur
硫氧化物作为硫酸，硫酸盐和亚硫酸盐是阴离子，并用阴离子交换树脂很容易去除。对于中性pH值的饮用水，高容量强大的基碱性阴离子交换树脂像AmberLite™ PWA15建议树脂。
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When present as acids, sulfate and sulfite can be removed from wastewater with acid absorber such asAmberLite™ HPR9500或者AmberLite™ HPR9600Resin.
For pH-neutral wastewater streams, a strong base anion exchanger likeAmberSep™ 21K XLT建议树脂。在这里，树脂将与硫酸盐和亚硫酸盐一起去除所有阴离子。
For streams that have a high organic content and are prone to surface fouling,AmberLite™ HPR4811 ClResin orAmberLite™ IRA458 Cl建议树脂。
Selective removal of sulfate from brine has been described using a metal hydroxide loaded ion exchange resin.1、2、3
This approach is particularly valuable in high salt streams like brines. DuPont recommends a catalyst,AmberLyst™ 15Catalyst, for this application.
The reduced form of sulfur, H2S, acts as a weak acid so it can be captured from water or air with a weak base anion resin such asAmberLite™ HPR9500或者AmberLite™ HPR9600Resin.
Mercaptans are organo-sulfur compounds that are typically not charged. These compounds can be captured by an adsorption mechanism withAmberSorb™ L493Polymeric Adsorbent Resin for liquid streams orAmberSorb™ V493Polymeric Adsorbent Resin for vapor streams.
Barium (Ba) and strontium (Sr) minerals, often present in sub-sea reservoirs, will precipitate with sulfate ions introduced via seawater injection and reduce formation permeability and potentially scale piping, so it is critical to remove sulfate prior to injection.FilmTec™SR90Nanofiltration Elements are an excellent choice to selectively separate sulfate ion from seawater to protect valuable hydrocarbon reservoirs. As an additional benefit, this treatment helps prevent souring.