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Adsorbent material for removal of hydrogen sulfide

A technology of adsorbent and hydrogen sulfide, applied in other chemical processes, chemical instruments and methods, separation methods, etc.

Inactive Publication Date: 2019-07-16
RGT UNIV OF MINNESOTA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in some cases environmental regulations may limit the release of hydrogen sulfide and its oxidation products to the atmosphere

Method used

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  • Adsorbent material for removal of hydrogen sulfide
  • Adsorbent material for removal of hydrogen sulfide
  • Adsorbent material for removal of hydrogen sulfide

Examples

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Embodiment Construction

[0044] Materials are described herein for the adsorption of elemental sulfur from gases containing hydrogen sulfide. For example, embodiments of these materials may be used to remove or otherwise separate hydrogen sulfide gas from other types of gases. Embodiments of the sorbent material may include metal oxide mixtures of atomic copper (Cu), atomic magnesium (Mg), and atomic aluminum (Al) synthesized by co-precipitation. In some cases, the sorbent material exhibits a high and stable sulfur capacity (e.g., in the range of about 2 to 10 mmol sulfur per gram of sorbent or higher) such that when exposed to a gas source containing hydrogen sulfide, it remains Adsorb a lot of sulfur. Additionally, in some cases, the sorbent material may be regenerated after sorbing sulfur to remove some or all of the sorbed sulfur in the sorbent material. Thus, the sorbent material can adsorb large amounts of sulfur from the gas source and, after regeneration, can be reused to adsorb additional a...

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Abstract

An example method of removing hydrogen sulfide from an input gas includes exposing an adsorbent material to an input gas to obtain an output gas. A concentration of hydrogen sulfide of the output gasis less than a concentration of hydrogen sulfide of the input gas. The adsorbent material includes copper oxide, magnesium oxide, and aluminum oxide. An atomic ratio of copper to magnesium to aluminumof the adsorbent material is X:Y:Z, where X is greater than or equal to 0.6 and less than or equal to 0.9, where Y is greater than or equal to 0 and less than or equal to 0.2, where Z is greater thanor equal to 0 and less than or equal to 0.2, and where X+Y+Z is equal to 1.

Description

technical field [0001] The present disclosure relates to regenerable sorbent materials, and more particularly, to high capacity regenerable sorbent materials for the removal of hydrogen sulfide. Background technique [0002] Hydrogen sulfide is a toxic and corrosive gas that is commonly found in natural gas, synthetic gas ("syngas") and coal gas sources, and in places such as hydrocarbon feedstocks and wastewater treatment plants. [0003] Due to the potentially harmful effects of hydrogen sulfide, it is often desirable to remove or separate it from other types of gases. For example, hydrogen sulfide is often removed as part of industrial processes such as gas processing, gas-liquid processing, Claus processing, coal gasification, and petroleum refining. [0004] In some cases, hydrogen sulfide removal from other types of gases is also required by environmental and process requirements. For example, in some cases environmental regulations may limit the release of hydrogen ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06
CPCB01J20/0281B01J20/041B01J20/2803B01D53/52B01D53/82B01D2253/1124B01J2220/42B01J20/0285B01J20/08B01J20/103B01J20/3433B01J20/3458B01D53/96B01D2257/304
Inventor M·查帕特塞斯V·V·巴拉苏布拉曼尼安Y·A·瓦赫迪A·哈希米
Owner RGT UNIV OF MINNESOTA
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