Industrial heat exchangers for mine air heating

We successfully replace tube air preheaters (TAH) on air heating installations (AHI) which are rather common in the mine heating systems.

OPT heat exchangers are free from any TAH disadvantages, including the stack flue clogging at continuous operation with solid fuels, since the gas flow reaches velocity above 15 m/s, resulting in channel self-cleaning.

Moreover, features of OPT heat exchanger design enable to:

  • To keep all dimensions of the replaced TAH;
  • Provide more extended heat transfer surface per weight and volume unit
  • Be much more effective and cheaper

ОPТ-500/78-300/60.2 heat exchanger manufactured with preservation of all dimensions instead of TPV-460 air heater of VNU 075х2 installation.

The technical specifications of ОPТ-500/78-300/60.2 air heater (equivalent of ТWP-460)

  • Weight: 19 940 kg
  • Heat power: 7 364 KW
  • Used for air heating
  • Payback period: 4.5 months
  • Flue gas temperature: 500℃
  • Heated air temperature: 300℃

All above mentioned disadvantages of TAH are almost excluded in OPT heat exchangers, and namely heat transfer surface clogging by flue gases is completely eliminated as the flow velocity exceeds 15 m/s providing self-cleaning of internal panel surfaces.