EFFECTS OF REDUCTIBILITY OF COAL GAS ON-PHYSICAL PROPERTY OF ZINC-BASED DESULFURIZATION SORBENT IN IGCC
IntroductionGasification technology represents an innovative electric power generation concept and it utilizes the low-grade fossil fuels to produce electricity, steam, syngas (CO and H2), ammonia, and methanol 1. An ultra gas cleaning process for further purification is necessary to convert syngas into the high value-added products, such as hydrogen for fuel cell and chemicals (DME, MeOH) for catalytic conversion processes 2,3. However, since the synthetic fuel gas contains harmful sulfur existing in the form of hydrogen sulfide (H2S) under the highly reducing conditions of the required for an integrated gasification system in order to remove H2S from it 4,5. Hot gas desulfurization (HGD) is a very important process for this purpose and researches on the HGD process have been concentration on the development of regenerable metal oxide sorbents with high sulfur removing capacity and long-term durability at high temperatures. Metal oxide sorbent is converted into metal sulfide as a result of reaction with H2S in syngas and it is restored to its initial metal oxide form by reaction with oxygen and SO2 during a regeneration process. Sulfur dioxide could cause serious damages to not only human beings but also ecological system on the earth as it is converted into acid rain. Therefore, the environmental regulations for the reduction of SO2 in the air have been tightened in many counties. The produced SO2 is selectively converted into elemental sulfur by catalyst in the direct sulfur recovery process (DSRP).
In-Hak Cho No-Kuk Park Gi Bo Han Suk Hoon Yoon Tae Jin Lee
School of Chemical Engineering and Technology, Yeungnam University, 214-1 Dae-Dong, Gyeongsan, Gyeon Institute of Clean Technology, Yeungnam University, 214-1 Dae-Dong, Gyeongsan, Gyeongbuk, 712-749, K
国际会议
The 7th China-Korea Workshop on Clean Energy Technology(第七届中韩清洁能源技术研讨会)
太原
英文
199-200
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）