Oil and Gas

Strainrite offers valuable knowledge and a thorough understanding of downstream oil and gas applications, providing the most comprehensive filtration solutions for everything from refining to hydrocracking. Strainrite’s Madd-Maxx large diameter pleated filters excel at these critical tasks.

Amine Sweetening and Glycol Dehydration

Amine Sweetening removes toxic and corrosive components, primarily hydrogen sulfide and carbon dioxide, from a hydrocarbon gas stream. Glycol Dehydration removes water to prevent corrosion or freezing of processing equipment.

Sour gas is fed into the absorber where lean amine absorbs hydrogen sulfide and carbon dioxide contaminants from the process stream creating sweet gas free, or gas free of carbon dioxide and hydrogen sulfide and rich amine (amine containing hydrogen sulfide and carbon dioxide). The amine is then fed through a carbon bed to absorb heavy metal contaminants and eventually into the regenerator or stripper where heat and pressure are used to remove remaining hydrogen sulfide and carbon dioxide. After the amine stream has been regenerated, it is blended with make-up amine and re-fed into the absorber treating new sour gas. Glycol dehydration uses an absorber and contactor to remove water from gas, preventing excessive corrosion and equipment damage.

Part of the Amine/Glycol filtration process involves critical filtration steps such as:

  • Make-up Amine/Glycol Filtration: to protect downstream equipment from particulates that settle in storage tanks, to maximize operational efficiency and to minimize energy costs and foaming
  • Carbon Bed Pre-Filtration: to minimize large particulates that can foul the carbon beds and to improve operational efficiency and carbon resin life
  • Carbon Bed Post-Filtration: to prevent carbon particles from migrating down stream, to reduce unnecessary maintenance due to plugging and equipment damage and to maximize absorber performance
  • Sour Water Filtration: to protect water treatment equipment from contaminants caused by highly corrosive hydrogen sulfide and ammonia

Proper filtration is critical to these processes. Contamination from particulate matter, foaming and other unwanted byproduct effects hampers operational efficiency when left unchecked by a poor filtration system.


Filtration is essential in the hydrotreating process to remove contaminant sources resulting from catalytic reactions and feedstock impurities.

Refineries use the hydrotreating process to remove sulfur from petrochemical feed stock through a catalytic conversion. These feed stocks are combined with hydrogen and fed into the fixed-bed catalyst hydrotreater at high temperatures and pressures. Contaminant sources include sulfide from the catalytic reaction and feedstock impurities which would significantly reduce productivity.

Strainrite’s products will effectively filter out contaminants from feedstocks, lubrication oil, make-up hydrogen, desulfurized hydrocarbon and sour water sources.

Storage, Transfer, and Final Product Filtration

For amine, diesel, gasoline, heating oils, heavy fuel oils, jet fuel, kerosene, naphtha and many other products, final filtration occurs both during and after processing, refining, storage and transfer. Through the network of pipelines and storage systems, water, dirt and other contaminants belie the need for the highest quality microfiltration systems to meet customer specifications.

Strainrite’s products will ensure the highest quality microfiltration to ensure fluids are free of contaminants during the storage and transfer process.

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