Fischer-Robertson, Inc.
Nowata Natural Gas Filtration
Coalescers & Separators


Gas Filtration & Gas Filter Vessels / Coalescers Separators

Forward Flow Filter Separator Gas Filter Cartridges
Forward Flow Filter Separator Gas Filter Cartridges
NFG Series Cartridges are designed to filter particles and coalesce liquids from natural gas without excessive pressure differential build-up in forward flow (outside in) applications.

NFG-36 cartridges are 3-9/16" OD x 2" ID x 36" long. NFG-336 cartridges are 4-1/2" OD x 3" ID x 36" long. Other lengths available include: 12",  24", 36" and 72". Molded fiberglass tube is made from compressed glass fibers bonded with inert phenolic binders. Heavy-duty spiral-locked center core supports the fiberglass tube and protects against collapse at high differential pressures. Metal end caps with Buna gaskets. Maximum operating temperature: 240 F. Recommended change-out differential: 15 PSI.

 

Reverse Flow Filter Coalescer Gas Filter Cartridges
Reverse Flow Filter Coalescer Gas Filter Cartridges
NFF Series Cartridges are designed to coalesce extremely fine liquid aerosols, including lubricating oil downstream of a compressor, in reverse flow (inside out) applications. Extremely durable, these cartridges can withstand over 75 PSI differential pressure in either direction.

  • NFF-36 cartridges are 3- 5/16" OD x 2" ID x 36" long. NFF-336 cartridges are 4-1/2" OD x 3" ID x 36" long. Other lengths available include: 12",  24", 36" and 72". Molded fiberglass tube is made from compressed glass fibers bonded with inert phenolic binders. Heavy-duty spiral-locked center core supports the fiberglass tube and protects against collapse at high differential pressures. Maximum operating temperature: 240 F. Metal end caps with Buna gaskets.  Recommended change-out differential: 15 PSI.  

GD Series Dry Gas Filter
Forward Flow Dry Gas Filter for Removal of Particulate
Dry Gas Filter for Removal of ParticulateVertical Configuration

All units available built to ASME Code design rules. 275 PSI @140F and 1/8" corrosion allowance. Uses NFG 12, 24 & 36 Cartridges. Higher PSI vessels are available. Vessels can be designed to customer specifications.

 

 

 

GW Series Gas Filter / Separator
Forward Flow Wet Gas Filter / Separator with Vane Mist Eliminator
Wet Gas Filter / Separator with Vane Mist EliminatorHorizontal Configuration

 

  • All units available built to ASME Code design rules with 1/8" corrosion allowance. Custom dimension / orientation. Uses NFG-324 Cartridge. Higher PSI vessels are available and Vessels can be designed to customer specifications.

 

 


GR Series Gas Coalescer Vessels
Reverse Flow Wet Gas Coalescing Filter
Reverse Flow Wet Gas Coalescing Filter

  • All units available built to ASME Code design rules. 275 PSI @ 140 F and 1/8" corrosion allowance. Uses NFF12R, 24R & 36R Cartridges. Higher PSI vessels are available. Vessels can be designed to customer specifications.

 

 

 

Low NOx Heater Fuel Gas Filtration
Nowata Solutions to Clean up dirty Natural Gas for Pilot Burners
Low NOx Heater Fuel Gas Filtration
Low NOx Heater Technology
has become increasingly important in the United States refinery and chemical markets, due to increasingly stringent government emission regulations.  With these tighter government regulations, operators have been forced to closely monitor and reduce by as much as 90% the amounts of NO and NO2 in the fuel products sent to their heaters for combustion.  Reductions are provided through a variety of steps including fuel pre-treatment, staged combustion, multi-stage fuel injection, internal furnace gas re-circulation, etc.  Perhaps the most critical component to the low NOx technology is the specially designed burner tips within the heaters.  Fouling of these burner tips can cause unacceptable increases in NOx emissions and maintenance costs.

Fuel gases are typically a combination of process off-gas streams from within the plant and pipeline natural gas.  Neither gas stream is typically treated on-site prior to inclusion in the fuel gas system and can contain solids such as pipe scale or catalyst fines and liquids such as hydrocarbons, amine or water vapor.

A Nowata Filtration Model GSX vane scrubber should be used to remove any liquid slugs in the fuel gas stream prior to the fuel gas compressor.

A Nowata Filtration Filter/Separator using 1 or 0.5 micron NFG Filter Elements should be used to remove hydrocarbon / water vapor mists and solids from the fuel gas stream prior to the fuel gas compressor to prevent fouling of the compressor. 

A Nowata Filtration Coalescer using 0.3 micron NFF Coalescing Filter Elements should be used to remove lube oils from the fuel gas that are introduced during the compression process.  These coalescers may be installed on either the primary fuel gas stream or at each individual heater.  This will prevent Low NOx fuel nozzle and combustor fouling in the plant process heaters.

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Fischer-Robertson, Inc.   3890 Symmes Road     Hamilton, Ohio 45014
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