Hot Gas filtration in chemical processes is of prime importance to keep the contaminants away. One such example is Nitric Acid,  production  of which requires an NH3/ Air mixture  to be  filtered to protect the expensive catalyst beds which are the oxidation zones in the reactor.  The filtration is very critical as it helps reduce down-times and safeguards the expensive noble metal catalysts.  Other industries also use hot gas filtration down to micron levels. At Diva Envitec we work closely  with customers to find cost effective and reliable solutions.

Hot Gas


  • Nitric Acid manufacturing NH3/Air mixtures
  • Melamine Anhydride manufacturing
  • Polysilicon Hot gas in Process
  • Atmospheric Pollution Control (APC)
  • Incineration Plants Chemical + Clinical Waste
  • Dry Gas Scrubbers
  • Soil Remediation
  • Aluminium smelters
  • In-Line Equipment Protection – (ILEP)
  • Biomass Gasification & Pyrolysis
  • Catalyst Protection

Feature and Advantages

  • Removes particles from compressed hot gases
  • Filter media both in Sintered Powder or SS Fiber mesh – for fine filtration
  • Protects precious metal catalyst poisoning

Technical Specification

  • Housings designs from a few bars to 100 Bar pressure rating
  • Materials of construction include carbon steel, stainless steel and special alloys
  • Housings are available with connection inlet outlet size ranges of 25 mm to 300 mm
  • Available micron ratings from .3um – 50um
  • High pressure vessel fabrication facility to manufacture as per DIN/ASME standards