PSA Nitrogen Methanol Inert Gas Generator.
PSA Nitrogen Methanol Inert Gas Generators Use of furnace atmospheres based on Methanol cracking has become widely acceptable as alternative to Endo-gas generators for many applications like carburizing, carbonitriding, annealing and hardening. Here Nitrogen gas is used as a carrier gas which reduces consumption of methanol. Cracking process at temperatures above 750° C is as under
MIXTURE. of nitrogen and Methanol (e.g. methanol 5 Liters & nitrogen 10 NM3) Composition Equivalent to Endo-gas fed into gas furnace provides as under:
Carbon Dioxide (CO2)
Carbon Monoxide (CO)
Nitrogen gas of 99.5% purity from cylinders or from a captive PSA-Nitrogen generator is used. Methanol should be free from moisture for getting low dew point in your furnace.
Turn Key Supply:
we supply "Nitrogen + Methanol" system on turn-key basis. Generation for nitrogen gas, we Supply A Generator PSA nitrogen and methanol feeding for A we provide feed Tank methanol, methanol methanol Flow Meter and A vaporizer inline.
Applications: This type of generator is widely used in Heat Treatment furnaces for:
Endo- Gas Generators.
Endo Gas (endothermic gas) Generators Produce Endothermic Gas (mixer or CO, CO2, N2 and H2) by reaction of air and fuel nickel Catalysts at 1050°C temperature.
Endothermic Gas Generators Principle:
Endothermic Process requires external heat which is provided by electrical Heater of fuel burning around the retort. Retort is made of heat résistance alloy suitable for 1050°C temperature. Due to Cracking of fuel, some Carbon Deposit on Catalysts, which is burnt –off every 15 days running by regeneration process which regains Catalyst Activity?
The following fuels can be used in these Endothermic Gas Generators:
· Natural Gas
· PROPANE GAS
The Endo Gas Generators are used following Furnaces
· Gas Carburizing
· Carbon restoration in Steel
· Hardening / Annealing
· High Temperature Brazing
· Reduction of metal oxide
10 Nm3/hr to 100 Nm3/hr
(-) 10°C to (+) 10°C
Exo Gas Generators.
EXO- Gas Generators produces protective atmosphere for Heat Treatment Furnace. Lean Exo- Gas or Rich- Gas is produced simply by charging the air to fuel ratio in burner.
Lean Exo –Gas Principle:
Lean Exo-Gas is produced by burning of fuels at slightly lower Sub-Stoichiometric Combustion Air to fuel ration. This Exo –Gas is lean in CO + H2 Content. Lean Exo- Gas Generators are Suitable for non ferrous metals heat treatment
Rich Exo –Gas Principle:
Rich Exo-Gas is produced by burning of fuels at slightly high Sub-Stoichiometric Combustion Air to fuel ration. This Exo –Gas is Rich in CO + H2 Content. Rich Exo- Gas Generators are used for heat treatment of steel and also brazing and annealing Application
By providing a Refrigerated dryer after Gas Generators dew point of (+) 5°C is achieved. For (-) 60°C dew point, a Molecular Sieves dryer provided
These Gas Generators are fitted with a specially designed Swirl flame burner which give soot combustion and oxygen Free Exo-Gas even under sub-stoichiometric condition. Burner is ignited by spark plug and flame is continuously monitored by UV - Flame scanner.
Fuel supply to burner stops automatically and Gas Generators Shuts down safety givening audio-visual alarm due to any problem like – low combustion air pressure , flame failure, low – water, or low fuel Pressure.
The following fuels can be used in these Exo Gas Generators.
· Natural Gas
· PROPANE GAS
10 Nm3/hr to 5000 Nm3/hr
(-) 5°C to (-) 60°C
PSA Nitrogen Gas Plant:
Capacity: 1Nm3/hr to 1200Nm3/hr
Purity : Up to 99.9999%
Pressure: Up to 10 Bar
Dew Point: up to (-) 80~C
This Process consists of 2 beds filled with carbon Molecular Sieves (CMS). When PRE-Filtered compressed air is passed thought one CMS bed, Nitrogen comes out as the product gas. The waste gas (oxygen, carbon dioxide, etc) is discharged back into atmosphere. Upon saturated of the CMS bed, the process switches nitrogen regeneration to other bed, while allowing the saturated bed to undergo regeneration by depressurization to atmospheric pressure. This ensures continuous supply of Nitrogen to your System.
Salient Features of PSA Nitrogen Plants.
Ø Capacity up to 1200Nm3/hr
Ø No fuel is required
Ø Purity up to 99.999% is easily achievable
Ø Low Capitals Coast
Ø Start up time of only 10 to 15 Minutes