HTT Canada

Plasma arc torches

Plasma arc torches for Plasma Reactors and Plasma Furnaces

The plasma arc torch is a strong steel tube of any given length that encloses the essential components, including electrodes, gas injectors, insulators, spacers, etc.

There are plasma torches to operate in transferred mode or non-transferred mode. It may be applied at almost any angle. A hermetic seal may be applied around the steel shroud of the torch, if it is needed.
Torch uses various types of electrodes from different metals such as Copper (Cu), Hafnium (Hf), Tungsten (W), etc.
The electrodes’ life time depends on a variety of factors: material of the electrode and the purity of that material, the type of gas used, level of gas consumption, current, technological aspects of the exploitation and other parameters and can last up to hundred hours. The plasma torches that we install in all furnaces and reactors normally have Copper (Cu) electrodes and work on air to produce the plasma jet. Electrodes’ life in this case is up to 200-300 hours. Plasma torches with Tungsten (W) electrodes that work on Argon (Ar) have electrodes’ life up to 500 hours.
The degree of efficiency of plasma torches has two components: electrical and thermal. Electrical degree of efficiency of plasma torches depends on the source of power supply, and the thermal degree of efficiency depends on the configuration of plasma torches. Its typical aggregate degree of efficiency is 60-80% under non-transferred mode and with 1m torch exposed.



Gas Plasma Arc Torches of non-transferred mode

Plasma arc torches alternating current (AC) and direct current (DC) with electrodes from Copper (Cu), using of various types of gases - Air, Nitrogen (N2), Oxygen (O2), etc.


Model

Power

Electrode life

Efficiency

PPT-50DC

50kW

up to  300 hours

0.65

PPT-100DC

100kW

up to  300 hours

0.65

PPT-300DC

300kW

up to  300 hours

0.75

PPT-500DC

500kW

up to  300 hours

0.75

Model

Power

Electrode life

Efficiency

PPT-100AC

100kW

up to  300 hours

0.70

PPT-150AC

150kW

up to  300 hours

0.70

PPT-200AC

200kW

up to  300 hours

0.70

PPT-250AC

240kW

up to  300 hours

0.70



Gas Melting Plasma Arc Torches of transferred mode

Melting plasma arc torches direct current (DC) of transferred mode with electrodes from Tungsten (W) and Copper (Cu), using of various types of gases - Argon (Ar), Nitrogen (N2), Oxygen (O2), etc.



Model

Power

Electrode life

Efficiency

MPT-60DC

60kW

up to   500 hours

0.65

MPT-200DC

200kW

up to   500 hours

0.75

MPT-300DC

300kW

up to   500 hours

0.80

Steam Plasma Arc Torches of non-transferred mode

The new technological application of steam instead of air in plasma torches does not create additional harmful impurity of nitrogen (N, NOx etc.) during gasification of various waste and simplifies the cleaning system of output gases.

The new generation of steam plasma arc torches is direct current with power from 50kW to 200kW. Electrodes of steam plasma arc torches are made from tungsten (cathode) and from copper (anode). All steam plasma arc torches have an argon protection of tungsten cathode. A consumption of argon is 0.2-0.5 g/s. It is let’s to increase the lifetime of the electrodes and to raise the efficiency of steam plasma arc torches. A weigh of plasma arc torches are from 10 to 30 kg. Electrodes lifetime is up to 200 hours. Efficiency is about 80%.



Model

Power

Electrode life

Efficiency

PPT-st-50DC

50kW

up to   200 hours

0.8

PPT-st-75DC

75kW

up to   200 hours

0.8

PPT-st-100DC

100kW

up to   200 hours

0.8

New Steam Plasma Arc Torches of transferred mode

The new generation of steam plasma arc torches is transferred mode direct current with power up to 600kW.

The steam plasma arc torch PPT-st-600DC a length is 2140 mm and a diameter of 300 mm and a weighs about 80 kg. It was developed for special melting furnace, for this reason has such dimensions. It has a power up to 600 kW. The cathode are made from tungsten. The plasma torch have an argon protection of tungsten cathode. It is let’s to increase the lifetime of the electrodes and to raise the efficiency of steam plasma arc torches. The efficiency of the plasma torch is very high, up to 90%. The cooling in this plasma torch is occurs using vapor, but do not using water. To do this, it is supplied with a steam generator and super heater original design. Therefore, if it is depressurized inside the furnace, the water is not get into the furnace and the explosion will not be!


Model

Power

Electrode life

Efficiency

PPT-st-200DC

200kW

up to   500 hours

0.9

PPT-st-300DC

300kW

up to   500 hours

0.9

PPT-st-600DC

600kW

up to   500 hours

0.9

Proposed POWER SUPPLIES for Plasma Arc Torches

Plasma arc torches of 50-75-100kW is supplied with a reliable and easy-to-use power supply PS-100DC and plasma arc torches of 150-200kW - with PS-200DC.
Power supplies have air-cooled and an additional inductance which allows you to get a sustainable ignition of plasma arc in the range of voltages from 100 to 600V. The control system of power supply provides a stable arc ignition, allows to make the diagnostic of process and to identify the causes of failures. All power supplies have a remote control.
Perhaps also delivery power supply for plasma arc torches of 300-500kW on request.




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