Case Studies

Customer pain points

Chemical production processes generate significant low-grade waste heat at 120°C–150°C, which traditional technologies struggle to utilize effectively, resulting in annual thermal energy losses of approximately 5000 million kWh.

Technical Solution

Adopts 2 sets of 1000kW ORC generator units to utilize chemical process waste heat for driving organic working fluid power generation, achieving cascaded energy utilization.

Implementation Results

• ✓Annual energy generation: 1400 thousand kWh
• ✓Annual electricity cost savings of 980 ten thousand yuan
• ✓Payback Period: 2.8 Years
• ✓Annual CO₂ reduction of 1.2 thousand tons

Customer pain points

The sintering ring cooler emits large volumes of high-temperature flue gas at 300°C–400°C. Direct release causes energy waste and thermal pollution.

Technical Solution

Construct a 12MW ORC waste heat power generation system to recover low-grade waste heat from the cooling section of sintering ring coolers for electricity generation.

Implementation Results

• ✓Installed Capacity 12MW
• ✓Annual energy generation: 8000 thousand kWh
• ✓Meet 15% of the plant's electricity demand
• ✓Annual savings of 2.6 million tons of standard coal

Customer pain points

The cement kiln head and tail emit large volumes of waste gas at 200°C–350°C, resulting in low thermal efficiency and high energy costs.

Technical Solution

Adopts a dual-pressure waste heat boiler + 9MW steam turbine generator set to recover waste heat from kiln head and tail exhaust gases for power generation.

Implementation Results

• ✓9 MW capacity
• ✓Annual energy generation: 6000 thousand kWh
• ✓Covers 30% of the production line's power consumption
• ✓Annual electricity cost savings of 4200 ten thousand yuan

Customer pain points

Textile dyeing requires process hot water at 80°C–120°C. Traditional coal-fired boilers cause high pollution and incur high operating costs.

Technical Solution

Adopt 3 units of 500kW high-temperature industrial heat pumps to recover waste heat from printing and dyeing wastewater for process hot water production.

Implementation Results

• ✓Hot water temperature 95°C
• ✓Energy savings rate: 55%
• ✓Annual operating cost savings of 180 ten thousand yuan
• ✓Payback Period: 2.2 Years

Customer pain points

Thermal power plant circulating water temperature ranges from 30°C to 40°C, releasing significant waste heat directly. Winter heating in nearby urban areas relies on coal-fired boilers.

Technical Solution

Utilize 4 units of 2000kW large-scale industrial heat pumps to extract waste heat from circulating water for heating 50 million square meters of urban buildings.

Implementation Results

• ✓Heated area: 50 10k sqm
• ✓Replace 8 coal-fired boilers
• ✓Annual savings of 1.5 million tons of standard coal
• ✓Annual CO₂ reduction of 4 thousand tons

Customer pain points

The converter smelting process generates large volumes of high-temperature flue gas with significant temperature fluctuations and high dust content, making waste heat recovery challenging.

Technical Solution

Uses a dedicated converter flue gas waste heat boiler combined with a vapor compression unit to recover waste heat from flue gas, generate steam, and supply it for production.

Implementation Results

• ✓Recovered flue gas volume: 8 × 10⁴ Nm³/h
• ✓Annual steam production of 12 10,000 tons
• ✓Energy savings rate: 45%
• ✓Annual savings: 1200 ten thousand yuan