Scholarlink

<p>In an era where environmental sustainability and resource depletion are pressing concerns, the need to revolutionize industrial processes is critical. Methanol production, essential for diverse applications, faces challenges due to reliance on depleting natural gas resources and energy-intensive methods. This study investigates the feasibility of using Thar lignite coal for methanol production via coal gasification, addressing both economic and environmental challenges. The research employs Aspen Plus® to model the conversion process, including gasification of Thar lignite to hydrogen syngas and its subsequent catalytic transformation into methanol. Sensitivity analyses show that syngas had the optimal temperature within the range of 800 to 900°C, remains stable across 1–100 bar pressure, thus having no impact of pressure, shifts toward higher H₂ and lower CO with increasing steam/coal ratio (optimal 0.1–0.15 for methanol), while keeping the oxygen/coal ratio of around 0.2 significantly impacts energy efficiency. The economic evaluation reveals a payback period ranging from 1.46 to 7.10 years, depending on methanol selling prices. This study highlights the integration of sustainability, innovation, and economic feasibility, offering valuable insights for advancing methanol production technology and strengthening Pakistan's energy security.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Towards sustainable methanol production: energy, exergy, economics, and environmental evaluation of Thar coal gasification

  • 期刊论文

  • 发表日期：

    2025年6月24日

查看全文
  • Syeda Asra Arshad,
  • Umna Nasir Ali,
  • Syed Ali Ammar Taqvi,
  • Bilal Kazmi,
  • Ahsan Khalid,
  • Muhammad Ahmer,
  • Farooq Ahmad,
  • Naveed Ahmad

摘要

In an era where environmental sustainability and resource depletion are pressing concerns, the need to revolutionize industrial processes is critical. Methanol production, essential for diverse applications, faces challenges due to reliance on depleting natural gas resources and energy-intensive methods. This study investigates the feasibility of using Thar lignite coal for methanol production via coal gasification, addressing both economic and environmental challenges. The research employs Aspen Plus® to model the conversion process, including gasification of Thar lignite to hydrogen syngas and its subsequent catalytic transformation into methanol. Sensitivity analyses show that syngas had the optimal temperature within the range of 800 to 900°C, remains stable across 1–100 bar pressure, thus having no impact of pressure, shifts toward higher H₂ and lower CO with increasing steam/coal ratio (optimal 0.1–0.15 for methanol), while keeping the oxygen/coal ratio of around 0.2 significantly impacts energy efficiency. The economic evaluation reveals a payback period ranging from 1.46 to 7.10 years, depending on methanol selling prices. This study highlights the integration of sustainability, innovation, and economic feasibility, offering valuable insights for advancing methanol production technology and strengthening Pakistan's energy security.

Graphical abstract