Waste Heat Recovery

Boiler Economizer & Waste Heat Recovery Unit

Recover heat from boiler flue gas and industrial exhaust with a Qingli economizer, engineered to your gas flow and temperature profile.

Waste Heat Recovery Heat Exchangers

Qingli designs heat recovery units that capture usable energy from boiler flue gas and industrial exhaust streams, and return it to the process as hot water, hot air or preheated combustion air. Reducing fuel consumption and exhaust temperature is the fastest way to improve a plant’s energy balance.

Where they are applied

  • Boiler economizers and flue gas heat recovery
  • Industrial drying rooms and coating / printing lines
  • Exhaust gas from ovens, kilns and process equipment
  • Retrofit projects on existing boilers and production lines

How we size a unit

Send us the exhaust gas flow, inlet and outlet temperatures, gas composition (especially dust, moisture and corrosive components), and the allowable pressure drop. Our engineers use our independently developed selection software to size the heat transfer surface and return a proposal.

Detailed dimensions, materials and performance data are provided against your specific enquiry, not from a fixed catalogue.

Typical Applications

Boiler flue gasIndustrial exhaustDrying linesEnergy retrofits
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