Gas Waste Heat Boiler

A Gas Waste Heat Boiler is a waste heat recovery device specifically designed for industrial gas emission sources. Its core function is to efficiently capture the heat energy from high-temperature exhaust gases generated during gas turbines, internal combustion engines, boiler flue gas, or industrial combustion processes, converting it into reusable steam or hot water through heat exchange. The Gas Waste Heat Boiler does not rely on additional fuel, directly utilizing waste heat from exhaust gases, significantly improving energy efficiency and reducing carbon emissions. It is a key piece of equipment for achieving industrial "dual carbon" goals. It is suitable for high-energy-consuming industries such as power generation, chemical engineering, metallurgy, and building materials, providing customers with sustainable energy optimization solutions.

High-temperature flue gas enters the boiler through the inlet, sequentially washing over the boiler's heating surfaces and transferring heat to the boiler water and steam: The flue gas first undergoes high-intensity heat exchange with the evaporator and superheater to generate steam; then, the boiler feedwater is preheated by the economizer, further reducing the exhaust gas temperature; the boiler water undergoes steam-water separation within the boiler drum, outputting stable, dry steam; the cooled, clean flue gas is discharged through the outlet and enters the subsequent dust removal, desulfurization, and denitrification systems.

The entire process involves no combustion and no additional emissions; waste heat recovery is achieved solely through physical heat exchange.

1. Structural Form:

Utilizes horizontal/vertical, single-drum/double-drum structures, with natural or forced circulation, supported by an integral steel frame, ensuring strong sealing and extremely low air leakage, adaptable to various on-site installation conditions.

2. Heating Surface System:

• Superheater: Increases steam temperature to meet the steam requirements for power generation and high-pressure processes;
• Evaporator: The core heat exchange area, efficiently converting boiler water into steam;
• Economizer: Reduces flue gas temperature, improving overall boiler thermal efficiency; Employs reinforced heat transfer pipes, providing a large heat exchange area, low resistance, and resistance to ash accumulation and wear.

3. Ash Removal and Wear Prevention:

Can be equipped with sonic soot blowing, mechanical vibration, and pulse soot blowing devices to maintain clean heating surfaces; Wear-resistant and corrosion-resistant treatment is applied to high-dust, high-velocity flue gas, extending service life.

4. Insulation and Outer Shell:

Employs a high-temperature resistant insulation layer + metal outer shell structure, minimizing heat loss, providing a neat appearance, and offering high-temperature resistance and corrosion resistance.

• Strong Heat Source Adaptability: Capable of handling high-temperature flue gas with various compositions, temperatures, and flow rates, with a wide operating range.
• High Thermal Efficiency:Fully recovers waste heat from flue gas, resulting in high overall utilization and significant energy savings.
• Stable and Reliable Operation:Optimized water circulation design ensures stable steam output, suitable for long-term continuous operation.
• Minimal Impact on Main Processes:Optimized flow field and low resistance prevent interference with upstream equipment.
• High Degree of Automation:Equipped with a complete control system, enabling automatic control of water level, pressure, and temperature.
• Comprehensive Safety Protection:Multiple interlocking protections against overpressure, overtemperature, and high/low water levels ensure safe operation.
• Easy Installation and Maintenance:Compact structure, small footprint, ample maintenance space, and low maintenance costs.

• Metallurgical Industry: Waste heat recovery from converters, blast furnaces, heating furnaces, and sintering machines;
• Chemical Industry: Process tail gas from synthetic ammonia, methanol, coking, and pyrolysis furnaces;
• Energy and Power: Tail gas recovery from gas turbines, internal combustion engines, and generator sets;
• Building Materials Industry: Fume from cement kilns, glass kilns, and ceramic kilns;
• Environmental Protection: Waste incineration, hazardous waste incineration, and RTO/CO waste gas treatment;
• Other High-Temperature Flue Gas Operating Conditions: Emissions from industrial furnaces, heat treatment furnaces, and drying furnaces.

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