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Thursday, April 18, 2013

Methanol Production



Methanol is synthetically produced from carbon dioxide and hydrogen.
CH4 + CO2 + H2O ---- 8H2 + 4CO
8H2 + 4CO ----- 4 CH3OH

Methanol from wood waste
Methanol can be produced from any carbonaceous material like coal, lignite, wood waste. Agricultural and garbage waste can also be used for methanol production. These raw materials needs additional processing steps to refine crude gas product to final synthetic gas product. The ratio is 2 Parts of H2 : 1 Part of CO.
The process is energy intensive and the yield is less.

Process Steps

  1. Partial Oxidation of wood waste (H2, CO, CO2, N2, etc.)
  2. Clean and Crude gas
  3. compress to 100 lb/inch sq./g
  4. Remove Carbon dioxide
  5. Remove residual carbon dioxide
  6. Remove Nitrogen and high carbon
  7. Compress tp 400lb/inchsq./g
  8. Shift gas into 2 parts of H2
  9. Compress to 2500 lb/inch sq./g
  10. Convert H2 + CO into Methanol
  11. Refine crude methanol to specification grade.