Engineering - Ethylene Plant Tasnee, Al Jubail, Saudi Arabia


Upgrading fuel blending stock to high-value petrochemical intermediates

Acetylene recovery technology

Linde Engineering’s acetylene recovery process is a leading technology for efficient acetylene production

As a leading global industrial gases and engineering company, Linde has a long history in the production and supply of acetylene gas, mainly for welding applications and as a chemical intermediate. Today we gladly share our know-how with our customers by providing licenses and designs for our state-of-the-art acetylene recovery technology worldwide.

In the 1960s, Linde was the first company to implement the continuous recovery of acetylene in a commercial steam cracker. Since then, Linde continually refined the design to meet the evolving demands of the market. Building on this track record and proven expertise, Linde now offers a range of benefits

  • Extremely pure ethylene streams with < 0.1 ppm vol. acetylene
  • Highest safety standards with piping and equipment designed to intrinsically exclude the risk of acetylene decomposition
  • Impeccable operational feedback from all commercial plants including no fouling or corrosion problems
  • Ease of integration with any steam cracker technology and full flexibility for all plant operating cases 
  • Maximum efficiency with the use dimethylformamide (DMF) as the absorption solvent
  • Simplified retrofits with utility specifications which are compatible with any steam cracker
  • Proprietary advanced process control included in the basic package

Backed by 45 years of successful operation in numerous commercial plants, Linde Engineering offers a thermal HydroDeAlkylation (HDA) process for the production of benzene from refinery and petrochemical streams.

This non-catalytic process is flexible towards a wide variety of feedstocks including toluene, xylenes, C9 aromatics, hydrogenated pyrolysis gasoline and reformate to produce high purity benzene with compelling yields.

In addition, it readily tolerates impurities of substances such as hydrogen sulfide (H2S), carbon monoxide (CO), carbon dioxide (CO2) and ammonia (NH3).

Outstanding features include

  • High purity benzene at 99.99 wt% or above
  • Excellent aromatic yields of 98 – 99%
  • Low hydrogen consumption
  • Best in class energy efficiency
  • No catalyst costs
  • High availability with large decoking intervals
Using our over half-century of steam cracking know-how, Linde has profoundly integrated the HDA process into the overall process scheme. The resulting, deeply interconnected process affords significant CapEx and OpEx savings without sacrificing any operational simplicity. This unique feature of Linde’s HDA technology provides our customers with a competitive edge for their benzene business.


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