The Airtorch® is a unique low pressure-drop device that is used to quickly heat air and other process gasses to temperature ranging from 200C to 1300C. They find use in simulating or running power plants, large die heat-up, combustion/flow simulation, curing, drying or bonding of paper boards, removal of inorganic and organic salts, fuel cells, general heat treatment for bending and de-flashing/deburring, drum heating, plastic rolls, welding of plastics, soldering disinfection, drying, rapid paper and pulp production, binder burn off, chemical reactions for environment and sustainability applications, and general uniform heating requirements.
MHI Airtorch® models offer extremely high energy efficiencies. Where required they are manufactured to ASME specification-compliant pressure vessels/ schedules – built by an experienced company with patented technologies. Airtorch® models range from 1 KW to several MW (120/240/400/480/600V). The smaller KW models are LTA, VTA and MTA925 and GTA925. The larger flow models are MVTA and GTA (high-pressure) class. The trained MHI staff and technicians are committed to excellence.
Climate change is one of the greatest challenges of our time. The Airtorch® can help.
The MHI rapid heat and high temperature gas and steam systems are being tested for a number of reactions. Use powerful Airtorch for continuous VOC removal or use for rapid heat treatment and/or surface treatments like finishing to hardfacing. The C, CO and CO2 gas reactions including Boudouard reaction can be manipulated with (hot process gases ) inlcudes Air, N2, O2, CO2, Ar and more.. Examine the ones below:
2CH4(g) + H2O(g) +CO2(g)= 3CO(g) + 5H2(g) Well feasible above ~(760-860C) with easy methods for enabling all forms of downstream reduction. MHI reaction.
E.g. products that are reducing gases that can be used for various reducing reactions including cleaning and shiny metal production such as Fe2O3 + 3CO(g) = 2Fe + 3CO2(g) (weak) or Fe2O3 + 3H2(g) = 2Fe + 3H2O(g) above 520C. Note also that CO2(g) + CH4(g)=2C + 2H2O(g) is always feasible at >100C but is extremely weak. Fe2O3 + 2CO(g) + H2(g) = 2Fe + 2CO2(g) + H2O(g) is always feasible but best above 1100C.
CO2(g) + CH4(g) = 2CO(g) + 2H2(g) Feasible above ~660C or via the steam reforming and water shift shown here.
MHI offers up to 10 Mega-Watts easy on off reactors and Airtorch® models.
Fuel Cells, High velocity drying and surface heating including simulation. Contact MHI for Nozzles supplied.
Catalytic Bed Heating/ See also Fluidized Bed.
Airtorch® units can have a high temperature input and may be supplied with high pressure shells/schedules. Various types of supplemental heating can be done. MHI specializes in custom units. Please be aware that customization add a considerable degree of cost. Use also for aseptic and antimicrobial processing.
Other MHI products like OAB® and Cascade e-ion also may also be used for such applications.
Combustion and Scorching/Burn off/Curing
Airtorch® can be used for curing, surface burning and sealing and simulation operations. The possibilities are endless as Air, Nitrogen, Helium and Argon can be used.During combustion the time for 98% combustion can change by several orders of magnitude for 100K rise in air temperature. Arrhenius equation and influence of Temperature.
1 scf gas
1 Nm3 gas
Scf (Standard cubic foot) gas measured at 1 atmosphere and 70°F.
Nm3 (Normal cubic meter) gas measured at 1 atmosphere and 0°C.
If the flow is higher than 40 scfm, please choose from MVTA models
If the temperature required is above 1150°C please choose DPF models
If the flow rate required is is of the order of 2-40 scfm please choose from MTA, VTA or LTA models or MVTA925 for flanged units
DPF – Up to 1150°C-1250°C/~2200°F. DPF models can take fan or blower input as well as a compressed air/gas input.
Large Flow MVTA. For 1000-1100°C. These are sealed process gas heater (THN or DNA class) with blower or inline capability. High KW – High Flow.
Large Flow GTA – For high pressure vessel Airtorchuse. Custom engineering. Please contact us directly for assistance.
Large Die Heating/ Rapid Dry
The Airtorch™ allows large die heat-up; reclaim dies and aluminum. Combustion/flow simulation, curing, drying or bonding of paper boards. Removal of inorganic and organic salts, fuel cells, general heat treatment fr bending and de-flashing/deburring, drum heating, plastic rolls, welding organics like plastic soldering disinfection, drying, rapid paper and pulp dry. With a 4 kW machine plan to dry 2-4 Kg/hr of desiccant.
Binder Burn-Off. Heating for Tensile and Fatigue Testing
Easy, uniform, safe, and collectable binder burn off. For ceramics, nitrides, powder metals, etc. Substantially improve quality and productivity.
When high temperatures are needed in spaces where resistance heating elements cannot be used, the Airtorch™ provides the solution. Temperature variations matter during adhesive resin curing. Temperature profiling is particularly is important with an 8 Data Log during start up and cool down. Airtorch is instantaneous and uniform. OAB steam is instantaneous. Hybrid.
Producing CO2(g) and want to recycle- try this — CO2(g) + H2(g) = CO(g) + H2O(g) Water Shift. Feasible above ~820C.
H2(g) can be obtained by electrolysis of water – use 800C steam.
* Estimate only- subject to change. The estimate will vary by application, VOC removal consideration price is considered primarily from gas stream only. All ROI’s require a 30 day assessment as the assessment may not be current.
Designed for long life and high temperatures, the non-contaminating Airtorch™ is an ideal solution for inline packaging or sealing processes.
Hot CO2 or CO can easily be reacted with azides of Na, Ca, Li etc based) and other reactive compounds to make useful solids or liquids and the oxides of the alkali metal can be recovered.
NaN2 +CO2 or Ca-N or Li-N compounds can be reacted with hot CO2; or oxides with hot CO for clean metal production.
Hot CO2(g) + NaN3 = C + NaO2 + 1.5N2(g)
is negative free energy and good kinetics at 980C.
Similarly Fe203 + hot CO(g) can yield clean Fe.
Combination of Greenhouse-gases (also called high temperature greenhouse gas reactions):
CO2(g) + CH4(g) = 2CO(g) + 2H2(g) Feasible above ~650C or via the steam reforming and water shift shown above. Again the products are reducing gases that can be used for various reducing reactions including cleaning and shiny metal production such as Fe2O3 + 3CO(g) = 2Fe + 3CO2(g) (weak) or Fe2O3 + 3H2(g) = 2Fe + 3H2O(g) above 515C. Note also that CO2(g) + CH4(g)=2C + 2H2O(g) is always feasible at >100C but is extremely weak. Someof the most potent greenhouse gases like Methane can be converted to Non-greenhouse gases CO and H2. These reducing gases can be used for reducing reactions like reducction of metal oxides. So either the OAB or Airtorch may be used. At this point catalysts become become important.
Note that several gases can be toxic and only professional use is recommended.
Heating: Create a convective cavity around the assembly using multiple Airtorch™ units. Fixture Airtorches™ behind mold and electrodes at angles to create air movement. This should improve the overall heating of the mold.
Insulation: The assembly is surrounded by refractory blankets (all 5 sides) to retain as much heat inside as possible. Blankets can be supplied by MHI at customer’s request.
Solution: By supplementing the existing electrodes with the Airtorch™ and blankets, the watt density is increased on the mold thus reducing the workload of the existing electrodes which should improve performance and life. Other results include an increase of uniformity across the mold surface. Call MHI for more information.
Soldering, Blanketing, Melting and Dental
Use the Airtorch® for softening, soldering, and melting of precious metals and glass. Please do not use wet metal specially wet aluminum in a furnace, instead optimize by heating or preheating with a versatile Airtorch®. This feature is very applicable to the dental, jewelry, and glass industries. Use for rapid glazing, burnout and quick melts.