Coal Converted to Gasoline

Liquid fuel such as Gasoline and diesel can be made from coal from different processes. Using hydogenated or carbonized processes coal is directly made liquid fuel. The Hydrogenation processes are:

  • Bergius process
  • Solvent Refined Coal (SRC)-I
  • Solvent Refined Coal (SRC)-II
  • NUS Corporation hydrogenation process

For low-temperature carbonization, coal is coked at 680 °F (360 °C) and 1,380 °F (750 °C). Using those optimized temperatures coal tar rich in lighter hydrocarbons than normal coal tar is produced, which then further processed into fuel. Another method is to first convert coal into gas, then liquid using Fischer-Tropsch process. Carbon Dioxide (CO2) is emited in the coal liquefaction process. For environmentally friendly process, coal liquefaction needs to capture carbon and store them or biomass blending. It is known that coal liquefaction produces more green house gas than refinement of crude oil.

In the future, Carbon Dioxide Sequestration to avoid releasing to atmospher is proposed for synthetic fuel projects. However, sequentration will add cost to the synthetic fuel production via coal. All US and one Chinese synthetic fuel project utilize Carbon Dioxide Sequestration to capture byproduct of Carbon Dioxide in the synthetic fuel generation using coal.

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