Study of integration of wind power with coal-derived synthetic natural gas system

Jie Feng, Jianyun Zhang, Weidou Ni, Zhen Chen, Zheng Li

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new integrated system which combines the coal-derived synthetic natural gas system with off-grid wind power is presented in this paper. In this system, wind power is used to electrolyze water to produce H2 and O2. The O2 is fed to the gasifier as gasification agent. The H2 is mixed with the syngas to adjust the H2/CO ratio for methane synthesis. In comparison with the conventional system, the integrated system makes use of off-grid wind power, avoiding impacts to grids and reduces the watergas shift process, which brings both advantages in the utilization of all raw materials and mitigation of CO2 emission. Taking a coal-derived synthetic natural gas project and a typical wind power farm in Inner Mongolia for demonstration, the integrated system was designed and analyzed for technical feasibility. The integration improves energy efficiency and decreases CO2 emission. One key issue is the scale and proportion of H2 from water electrolysis by wind power and the instability of wind power should not interrupt the chemical process. Results show that 90% of H2 needed to adjust the H2/CO ratio should be produced by the conventional process and another 10% of H2 should be generated from water electrolysis.

Original languageEnglish (US)
Title of host publicationBiomass and Renewable
PublisherAabo Akademi University
Pages387-394
Number of pages8
ISBN (Print)9781456303112
StatePublished - 2010
Externally publishedYes
Event23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010 - Lausanne, Switzerland
Duration: Jun 14 2010Jun 17 2010

Publication series

NameProceedings of the 23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010
Volume2

Conference

Conference23rd International Conference on Efficiency, Cost, Optimization, Simulation, and Environmental Impact of Energy Systems, ECOS 2010
CountrySwitzerland
CityLausanne
Period6/14/106/17/10

Keywords

  • Coal-derived synthetic natural gas
  • Off-grid wind power
  • Stability
  • Water electrolysis

ASJC Scopus subject areas

  • Energy(all)
  • Environmental Science(all)

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