Manufacturing of other technical plants by customers' drawings and design:

  • welded carbon steel and stainless steel constructions
  • reactors
  • pipe systems, including instrumentation and assembling of armatures
  • own workshop with all necessary machinery and tools

Trading and consulting for water treatment plants of the brand GETEC

  • water recycling plants for multiple use of water
  • water treatment plants for the upgrading of rain water, ground water or surface water to potable water
  • mobile units with integrated electric energy supply by solar panels or wind energy
  • erection and commissioning of gas plants at site
  • after sales service for delivered plants

Delivery of spare parts for technical plants

  • catalysts: noble metal and metal oxide catalysts (bulk and monolithic: metal or ceramic supports)
  • activated carbon: standard types and impregnated types
  • molecular sieves
  • technical chemicals
  • instruments (flowmeters, manometers, pressure regulators, thermometers, thermocouples)
  • armatures (manual valves, solenoid valves, check valves, safety valves, gas filters)
  • analysers and other electronic equipment
  • standard and special spare parts by customers' requests

Purification plants for technical gases

The generation of technical gases - nitrogen, hydrogen, oxygen, carbon dioxide, noble gases - is a costly process and technical gases should be recycled if technically possible.

Very often it is necessary to upgrade gases to achieve required final purities.

VOG Vormwald supplies plants for the upgrading or recycling of technical gases.

For the recycling or quality upgrading of technical gases undesired components have to be removed. Those components depend on the application and may be oxygen, hydrocarbons or moisture. Different process steps are selected to combine a recycling or upgrading plant to reach the final product:

  • oxygen is removed by adding hydrogen (or other reducing agents) to the gas (e.g. nitrogen). On selected special noble metal catalysts oxygen reacts with hydrogen forming moisture. If the moisture has to be removed, an additional dryer is added downstream the catalytic unit. The input of hydrogen is controlled by means of an analyser and a PLC controlled dosing loop. Final oxygen contents down to approx. 1 ppm are standard.
  • hydrocarbons are removed by adding oxygen (or air) to the gas. By using special selected noble metal catalysts the hydrocarbons react with the oxygen forming moisture and carbon dioxide. If the moisture and the carbon dioxide are not allowed in the purified gas, an additional dryer is included downstream the catalytic unit. The input of oxygen is controlled by means of an analyser and a PLC controlled dosing loop. Final hydrocarbon contents down to 5 ppm are standard.
  • moisture is removed by using fully automatically operated twin tower molecular sieve dryers. The moisture (and also carbon dioxide) is adsorbed on a molecular sieve (zeolith) in one of the two towers whilst the other tower is regenerated. Final dew points of -40 to -70°C are standard.
  • other components (e.g. hydrogen sulfide, mercaptanes, mercury) can be removed by using special activated charcoal, molecular sieve or other selective absorbents (e.g. aluminium oxide, aluminium gels).
  • all processes are controlled by state-of-the-art PLC units and are running fully automatically.