• Title/Summary/Keyword: 망간계 탈황제

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Physical Properties and Sulfidation Kinetics of Mn-Based Sorbent for Hydrogen Sulfide Removal (황화수소 제거를 위한 망간계 탈황제의 물리적 특성과 황화반응 속도)

  • Oh, Kwang-Joong;Shon, Byung-Hyun;Choi, Eun-Hwa;Yi, Gang Woo
    • Journal of Korean Society of Environmental Engineers
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    • v.22 no.11
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    • pp.2067-2076
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    • 2000
  • The experiments have been made to develop manganese-based sorbent(MT, MFT) for the removal of hydrogen sulfide from simulated hot coal gases. Manganese-based sorbents were tested in an ambient-pressure fixed-bed reactor to calculate H2S removal efficiency. and a three hole jet attrition tester to characterize the sorbent physical properties. According to the experimental results of attrition test. the attrition resistance of 5% bentonite containing sorbent was higher than that of 2% bentonite. The attrition resistances of both sorbents increased with induration temperature. Effects of sulfidation temperature. space velocity. and $H_2S$ concentrations on the $H_2S$ removal efficiency were investigated. Experimental results showed that $H_2S$ could be removed from 5,100ppmv to 20ppmv at $450^{\circ}C$, and to 30~65ppmv at $550{\sim}650^{\circ}C$ for both MT/MFT sorbents. As for the change of space velocity, the breakthrough time was decreased with space velocity.

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Trends in Research and Technical Development of Sorbents for Hot Gas Desulfurization for H2S Removal (H2S 제거를 위한 고온건식 탈황제의 연구 및 기술개발동향)

  • Seo, Jun-Hyung;Baek, Chul-Seoung;Kwon, Woo Tech;Ahn, Ji-Whan;Cho, Kye-Hong
    • Resources Recycling
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    • v.25 no.5
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    • pp.14-27
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    • 2016
  • Theoretical reviews of integrated gasification combined cycle one of the clean coal technologies and trends in the study and technology development for high temperature desulfurization sorbents were investigated. Reactivity, durability and abrasion resistance is an important key for development of high temperature desulfurization sorbents, the kind of things include calcium, zinc, manganese, iron and copper-based sorbents. Current status of high temperature desulfurization sorbents, manufacturing techniques of zinc-based sorbent in advanced countries has commercialized. In case of Korea, various research studies are underway to commercialize the Zn and non Zn-based high temperature desulfurization sorbents to cheaper and superior capability using various supports.

Development of the Advanced Manganese-Based Sorbent for Hot Coal Gas Desulfurization (고온 석탄 가스 탈황을 위한 개선된 망간계 탈황제 개발)

  • Shon, Byung-Hyun;Choi, Eun-Hwa;Cho, Ki-Chul;Jeon, Dae-Young;Oh, Kwang-Joong
    • Journal of Korean Society of Environmental Engineers
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    • v.22 no.2
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    • pp.291-302
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    • 2000
  • This experiments have been made to develop of manganese-based sorbent for the removal of hydrogen sulfide from hot coal gases. Manganese-based sorbent were tested in an ambient-pressure fixed-bed reactor to determine steady state $H_2S$ concentrations, breakthrough times and feasibility of the sorbent when subjected to cycle sulfidation and regeneration testing. Effects of particle size of sorbent, temperature of sulfidation, regeneration temperature and regeneration characteristics on the $H_2S$ removal efficiency were investigated. Experimental results showed that the $H_2S$ removal efficiency was optimal when the temperature was about $800^{\circ}C$ and the smaller particle size, the better $H_2S$ removal efficiency but in the range of 0.214~0.631mm didn't influence it much. The equilibrium constant(K) is represented as a log(K)=3.396/T-1.1105 and the utilization efficiency of sorbents was about 92% at $800^{\circ}C$. Regeneration in air produced $SO_2$ concentration as high as 8.5% at $800^{\circ}C$, 8.4% at $850^{\circ}C$, and 8.8% at $900^{\circ}C$ and may be used in sulfuric acid production.

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A Study of Regeneration Reaction for Desulfurization Sorbents using Natural Manganese Ore (천연 망간 광석 탈황제의 재생 반응 특성 연구)

  • 윤여일;윤용승;김성현
    • Journal of Energy Engineering
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    • v.11 no.3
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    • pp.247-253
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    • 2002
  • Natural manganese ore was selected as main active component for a non-zinc desulfurization sorbent used in the gas clean-up process of the integrated gasification combined cycle (IGCC) because of excellent H$_2$S removal efficiency and economical aspect . In this study, the regeneration characteristics of sorbent after desulfurization reaction were determined in a thermobalance reactor and a fixed bed reactor in the temperature range of 350~55$0^{\circ}C$. The mixed gases of oxygen and nitrogen are used as the regeneration reaction gases for manganese sorbent. According to Mn-S-O phase diagram, the manganese sorbent has a low regeneration efficiency in medium temperature due to formation of MnSO$_4$ and the regeneration temperature must be over 85$0^{\circ}C$. To improve that problem, ammonia and steam was added in regeneration mixed gases. Effect of new regeneration method was determined by XRD and difference of desulfurization through multicycle tests.

Study of Kinetics for Removal H2S by Natural Manganese ore Sorbent (황화수소 제거를 위한 천연망간광석 탈황제의 반응 속도 연구)

  • Yoon, Yeo Il;Kim, Myung Wook;Kim, Sung Hyun
    • Clean Technology
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    • v.7 no.3
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    • pp.187-194
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    • 2001
  • The desulfurization process which belongs to the gas refining part is the unit process that eliminates $H_2S$ and COS in the coal gas formed by the coal gasification part in the integrated gasification combined cycle(IGCC). In this study, natural manganese ores were selected as the raw material of the desulfurization sorbent due to economical efficiency. Initial rates for the reactions between $H_2S$ and desulfurization sorbent using natural manganese ores were determined in a temperature range of $400{\sim}800^{\circ}C$ using a thermobalance reactor. All reactions were first order with respect to $H_2S$ and were in accord with the Arrhenius equations. When sulfidation reaction was controlled by diffusion, the temperature dependence of the effective diffusivity was given by the Arrhenius equation. Activation energies and frequency factors were obtained from the product layer diffusion coefficient of various sorbents by plotting as Arrhenius equation form.

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