KR-102961267-B1 - tube type desulfurization media

Abstract

A tubular desulfurization media for removing hydrogen sulfide is disclosed. The disclosed tubular desulfurization media for removing hydrogen sulfide is configured such that cellulose is used as a media support and is configured to include an iron (Fe) component for removing hydrogen sulfide. It is configured in a pellet form having a predetermined length, and is characterized by having a gas flow space (h) formed through the center to increase the reaction surface area and facilitate the flow of biogas, thereby forming a tubular shape.

Inventors

• 정헌회
• 강광남
• 허문수
• 김지은

Assignees

• 에이티이 주식회사

Dates

Publication Date

20260511

Application Date

20230530

Claims (2)

1. Cellulose is configured as a media support, and as components of the desulfurization media, it is configured to include cellulose, calcium carbonate, magnesium carbonate, iron hydroxide, and nutrients, and is configured to include an iron (Fe) component for the removal of hydrogen sulfide. It is configured in the form of a pellet having a predetermined length, and is formed in the form of a tube with a gas flow space (h) formed through the center to increase the reaction surface area and facilitate the flow of biogas. The diameter of the desulfurization media is configured to be 12 to 14 mm, a gas flow space (h) with a diameter of 2.5 to 3.5 mm is formed through the center thereof, and the length is configured to be 29 to 31 mm. A tubular desulfurization media for removing hydrogen sulfide, characterized in that a gas guide spiral groove (s) is further formed in a spiral shape along the longitudinal direction on the inner surface of the gas flow space (h).
2. In Article 1, A tubular desulfurization media for removing hydrogen sulfide, characterized by being composed to include cellulose, calcium carbonate, magnesium carbonate, iron hydroxide, and nutrients as components of the desulfurization media.

Description

Tube type desulfurization media for hydrogen sulfide removal The present invention relates to a media capable of removing hydrogen sulfide by a dry method, and more specifically, to a tubular desulfurization media for removing hydrogen sulfide that is configured in a tubular shape having a hollow portion to continuously maintain hydrogen sulfide removal efficiency and reduce pressure rise within a reaction vessel. Interest in high-concentration organic waste has led to the development of technologies to utilize it as a new and renewable energy source. Among these, a method of treating organic matter by anaerobic digestion to produce biogas with a high methane content and utilizing it as an energy source is being applied to the treatment of sewage sludge, livestock wastewater, and food waste. However, the generated biogas contains not only methane and carbon dioxide but also various impurities, such as hydrogen sulfide, ammonia, siloxanes, and fine suspended solids, so these must be removed when utilizing it as an energy source. In particular, hydrogen sulfide causes corrosion in pipes and equipment, which limits the scope of its application. To remove such hydrogen sulfide, there are wet methods using chemicals, dry methods using media adsorption, and biological methods using sulfate-oxidizing microorganisms. The wet method involves removing hydrogen sulfide by reacting it with an appropriate aqueous chemical solution, but it has the disadvantages of excessive chemical consumption and the generation of wastewater as a secondary byproduct. The biological method also faces difficulties, such as the need for microorganism management points and a continuous supply of nutrients. In contrast, the dry method removes hydrogen sulfide by adsorption using a dedicated medium, making the facility simple and easy to maintain, but requires replacement due to the lifespan of the medium. Conventional desulfurization media attempted to increase adsorption capacity by imparting porosity, but since they were simply formed in a pellet-type shape, the pores became clogged due to the high moisture content in the incoming biogas, and clogging occurred due to adsorption products, causing a rise in pressure within the reaction tank. Accordingly, there is a requirement for a media function that maintains continuous hydrogen sulfide removal efficiency regardless of the influence of moisture, etc., and reduces the pressure rise within the reaction tank. Figure 1 is a photograph showing the external appearance of a conventional desulfurization media for removing hydrogen sulfide, and FIG. 2 is a photograph showing the external appearance of a tubular desulfurization media according to the present invention, and FIG. 3 is a diagram illustrating a comparison of specifications between a conventional desulfurization media and a tubular desulfurization media of the present invention, and FIG. 4 is a comparison table showing experimental results regarding the desorption/adsorption rate, increase in surface area, and reduction in differential pressure within the reaction vessel of the desulfurization media according to the present invention and conventional desulfurization media. FIG. 5 is a drawing showing a desulfurization media according to another embodiment of the present invention. The above objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments associated with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed content is thorough and complete and to ensure that the spirit of the invention is sufficiently conveyed to those skilled in the art. In describing the specific embodiments below, various specific details have been included to explain the invention more specifically and to aid understanding. However, a reader with sufficient knowledge in the art to understand the invention will recognize that it can be used without these various specific details. In some cases, it is noted in advance that commonly known aspects that are not significantly related to the invention have been omitted to prevent unnecessary confusion in describing the invention. The desulfurization media for removing hydrogen sulfide according to the present invention is intended to primarily remove sulfur compounds from biogas with high humidity and is configured to include cellulose, calcium carbonate, magnesium carbonate, iron hydroxide, and nutrients. The desulfurization media of the present invention can be manufactured by mixing cellulose, calcium carbonate, magnesium carbonate, iron hydroxide, and nutrients, molding them into a specific shape suitable for the intended use, and processing and drying the molded product. Cellulose has a porous fiber structure, which not only provides lightweight proper