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Using syngas to generate methanol

Low Pressure (LP) Methanol

Using syngas to generate methanol

With over 40 units designed, Air Liquide Engineering & Construction has considerable experience in Low Pressure (LP) Methanol synthesis. This proven technology is used to produce methanol from any syngas derived from carbonaceous material.

Methanol to meet any specifications

The feedstock for the LP Methanol process is syngas produced from any carbonaceous material, although natural gas is the most common source. Depending on client needs, the LP Methanol unit may feature integrated syngas generation based on natural gas, or it may be downstream of a gasification unit.

The syngas is converted to methanol in a water cooled reactor filled with a highly active and selective synthesis catalyst provided by Clariant. Due to quasi-isothermal operation high per pass yields are achieved. Any unconverted syngas is then recycled back into the synthesis loop to improve both yield and carbon efficiency. The raw methanol exits the synthesis loop and is further distilled to meet client requirements in terms of methanol specifications (International Methanol Producers and Consumers Association, United States Federal Grade Acrylic Acid, etc.).

LP Methanol is an ideal technology for clients looking for medium-scale methanol production of less than one million tons per annum.


  • Methanol is adapted to meet clients' required regulatory specifications
  • Ideal for medium-scale methanol production of <1 million tons per annum
  • Low production cost

Key figures (including combined reforming and ASU)

  • Capacity: up to 3 500 tons per day
  • Natural gas consumption: 29 million british thermal units (MMBTU) per ton
  • Oxygen from integrated Air Separation Unit: 0.4-0.5 ton/ton

Lurgi Methanol