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活性炭的应用领域概述Application of Activated Carbon(玖)  

2018-03-22 06:50:32|  分类: 活性炭产业 |  标签: |举报 |字号 订阅

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资料编辑:吉建斌2010年2月

土壤的蒸汽抽提技术(SVE)常用于从渗流层或水不饱和层(指处于地平面与地下水位线之间的土壤区域)的土壤中脱除可挥发性有机物(VOC)。从地面上的泄漏点或其它来源迁移来的有机物会缓慢地通过这一土壤区,有时甚至会永久性地被土壤阻留,一旦渗到地下水位就可能造成地下水源污染。SVE技术是向这一区域的土壤中通入空气,在有机污染物到达地下水位之前将其蒸发并进入空气流而离开土壤结构。由此产生的含有VOC的空气流需进行脱除有机物处理。活性炭可用来脱除SVE排出气体中的可挥发性有机物。

3、Other Applications

其它应用领域

3.1  Mercaptan Removal  硫醇的去除

Light straight run gasoline, lower-boiling range distillates and other non-hydrotreated fuels ("sour stocks") contain sulfur compounds such as mercaptans, that must be removed ("extraction/sweetening") to avoid problems with odor and corrosion, or prior to catalytic reforming and catalytic alkylation processes. Activated carbon products especially designed can offer a mercaptan removal solution to provide catalyst support for desulfurization processes treating petroleum distillates.

轻质直馏汽油、低沸点蒸馏油和其它未经加氢处理过的燃油(“发酵原料”)含有硫醇类硫化物,须采取措施(“抽提/脱臭”)将其去除以免引起异嗅或腐蚀问题,或者须在催化重整和催化烷基化反应工序之前将其脱除以避免毒化催化剂。经特殊设计的活性炭产品可对石油馏份进行脱硫处理,脱除这些硫醇类物质以保护催化剂。

3.2  Mercury Removal From Liquid Hydrocarbons  液相碳氢化合物脱汞

Liquid hydrocarbon streams may contain small quantities of mercury. The presence of mercury and its various compounds often creates problems in subsequent processes for which the liquid hydrocarbon product is used, reducing its quality and value as a product. Additionally, the presence of mercury increases safety and health concerns within the processing plant environment. A variety of granular activated carbons and specialty grade impregnated activated carbons can offer a proven solution for the mercury removal from liquid hydrocarbon streams.

液相碳氢化合物原料中可能含少量汞。汞及其各种形态的化合物常引发碳氢化合物的后继加工过程中存在问题,会降低加工产品的质量及其产量。另外,汞也会增加厂区环境的安全性和健康方面的风险。一系列的颗粒状活性炭及其特制的浸渍活性炭产品可用来脱除液相碳氢原料中的汞。

3.3  Metals Recovery & Removal金属的回收和脱除

A number of metals that exist in water and process streams can be difficult or costly to remove and/or recover. This includes the recovery of precious and semiprecious metals, the removal of metals from remediation sites, and the removal of potentially harmful trace metals from drinking water. Activated carbon has been used for decades to recover gold from mining operations. Along with advanced technologies eg. ion exchange separation, the activated carbon adsorption can offer a cost-effective solution for metals recovery and removal.

The Activated Carbon Adsorption can be combined with proprietary, complementary technology such as the Ion Exchange Separations for recovering and purifying copper, gallium, nickel, zinc, vanadium and aluminum from process streams. Nickel is also removed from cobalt electrolyte streams. Gold, silver and other precious metals are recovered with these technology.

许多存在于水中和工艺原料流体中的金属很难进行经济性地脱除和/或回收,包括贵金属及次贵金属的回收、从待治理区域脱除金属成分、以及从饮用水中去除有潜在危害性的痕量金属等。在采矿加工业,活性炭回收黄金的技术已成功运用了数十年。与其它先进技术如离子交换分离技术等相联合,活性炭吸附技术可提供低成本的金属回收和脱除解决方案。

活性炭吸附与其它专利型、互补型技术(例如离子交换分离技术)相联合,可从工艺原料流体中回收并提纯铜、镓、镍、锌、钒、铝等,也可将镍从电解铜液中脱出。采取这些技术方法亦可回收金、银及其它贵金属。

3.4  Agriculture Production Industry  农产品加工业

The Ion Exchange Separations technology and the Activated Carbon Adsorption technology are used in 70% of the world's lysine production. Juice purification, corn syrup de-ashing, beet sugar purification, and sweetener de-colorization are practiced daily in many Ion Exchange Separation and Activated Carbon Adsorption installations.

Activated carbon is used for de-colorization in corn sweetener and sugar applications. In addition, pesticide and herbicide removal from wastewater and groundwater can be accomplished with either UV oxidation or activated carbon technology.

 

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