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1. 发明授权

US6120581A Sulfur production process 失效
标题翻译：硫磺生产工艺
公开(公告)号：US6120581A
公开(公告)日：2000-09-19
申请号：US231359
申请日：1999-01-13
申请人： John Markovs , Gordon Thomas Cartwright , Carmen M. Yon , Henry Rastelli
发明人： John Markovs , Gordon Thomas Cartwright , Carmen M. Yon , Henry Rastelli
IPC分类号： B01D53/047 , B01D53/47
CPC分类号： B01D53/0462 , B01D53/047 , B01D2253/1085 , B01D2253/308 , B01D2257/7027 , B01D2257/80 , B01D2259/40052 , B01D2259/40054 , B01D2259/4006 , B01D2259/4009 , B01D2259/402 , B01D53/261
摘要： A process is provided for the removal of trace amount of aromatic hydrocarbons from a waste feed gas stream comprising sulfur compounds and the aromatic hydrocarbons. An adsorption process employing an adsorbent such as a high silica zeolite adsorbent having a framework silica to alumina ratio greater than about 15 and having a pore size greater than about 6.2 Angstroms is used to remove from the feed gas mixture aromatic hydrocarbon contaminants and permit the recovery of a high purity sulfur product from the treated effluent stream. The adsorption zone comprises at least 2 adsorption beds wherein one of the first adsorption beds is operating in an adsorption mode and the other is being regenerated at a desorption pressure higher than the adsorption pressure. The regeneration is performed in a closed system or partially closed system, and prior to returning a regenerated adsorption zone to adsorption conditions the waste feed gas stream is used to cool and purge the regenerated zone. Purge effluent from the regeneration zone is passed to a bed undergoing adsorption in a lead/trim configuration to prevent a slug of aromatic hydrocarbons from entering the adsorption effluent. The use of the present invention removes aromatic hydrocarbon contaminants which are responsible for the degeneration of the performance of the downstream sulfur recovery zone.
摘要翻译：提供了一种从包含硫化合物和芳族烃的废料进料气流中除去微量芳族烃的方法。使用吸附剂的吸附剂，例如高二氧化硅沸石吸附剂，其骨架二氧化硅与氧化铝的比例大于约15，孔径大于约6.2埃，用于从进料气体混合物中除去芳族烃污染物并允许回收的来自经处理的流出物流的高纯度硫产物。吸附区包括至少2个吸附床，其中第一吸附床中的一个以吸附模式运行，另一个在高于吸附压力的解吸压力下再生。再生在封闭的系统或部分封闭的系统中进行，并且在将再生的吸附区返回到吸附条件之前，使用废物进料气流来冷却和净化再生区。来自再生区的净化流出物被传递到经历吸收的铅/修整构型的床中，以防止芳族烃块进入吸附流出物。本发明的用途除去了负责下游硫回收区的性能退化的芳烃污染物。

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