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Basic Economic Analysis for Co-production Process of DME and Electricity using Syngas Obtained by Coal Gasification
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  • Journal title : Korean Chemical Engineering Research
  • Volume 52, Issue 6,  2014, pp.796-806
  • Publisher : The Korean Institute of Chemical Engineers
  • DOI : 10.9713/kcer.2014.52.6.796
 Title & Authors
Basic Economic Analysis for Co-production Process of DME and Electricity using Syngas Obtained by Coal Gasification
Yoo, Young Don; Kim, Su Hyun; Cho, Wonjun; Mo, Yonggi; Song, Taekyong;
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The key for the commercial deployment of IGCC power plants or chemical (methanol, dimethyl ether, etc.) production plants based on coal gasification is their economic advantage over plants producing electricity or chemicals from crude oil or natural gas. The better economy of coal gasification based plants can be obtained by co-production of electricity and chemicals. In this study, we carried out the economic feasibility analysis on the process of co-producing electricity and DME (dimethyl ether) using coal gasification. The plant`s capacity was 250 MW electric and DME production of 300,000 ton per year. Assuming that the sales price of DME is 500,000 won/ton, the production cost of electricity is in the range of 33~58% of 150.69 won/kwh which is the average of SMP (system marginal price) in 2013, Korea. At present, the sales price of DME in China is approximately 900,000 won/ton. Therefore, there are more potential for lowering the price of co-produced electricity when comparing that from IGCC only. Since the co-production system can not only use the coal gasifier and the gas purification process as a common facility but also can control production rates of electricity and DME depending on the market demand, the production cost of electricity and DME can be significantly reduced compared to the process of producing electricity or DME separately.
Gasification;Co-production;Poly Generation;Electricity;Di-methyl Ether;
 Cited by
Linze-Donawitz 가스로부터 일산화탄소(CO) 분리를 위한 흡수 및 흡착공정에 대한 기술경제성 비교,임영일;최진순;문흥만;김국희;

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