Efficient Heat Exchange Carbon Steel Economizer For Power Plant Boilers

Efficient Heat Exchange Carbon Steel Economizer for Power Plant Boilers

Benefits of H-fin tube economizers?

2-4x larger heat transfer area with better anti-fouling performance.

Quick Details Specifications

Flue gas economizers offer key advantages: transferring flue gas heat to low-temperature media to reduce exhaust temp and heat loss. Some use air heat exchangers to reuse waste gas as an air preheater, cutting coal fuel use.
A must for coal-fired boilers, the economizer sits in the flue, capturing heat to preheat feedwater. Made from 20 low/medium-pressure pipes, 20G seamless steel, or ASME-grade tubes, it lowers flue gas temp, maximizes heat recovery, and reduces fuel costs. Heated feedwater enters the steam drum at higher temps, minimizing thermal stress and drum wear. It’s a cost-effective alternative to high-temperature boiler tubing, cutting manufacturing costs.

(1) The economizer is a steam generation system as like a boiler. when the exhaust gas discharge from the engine cylinder through the exhaust valve it goes to the boiler for generate steam by heating of water.

(2) After those gas it goes through the economizer the remaining exhaust gas temperature is heated the water in economiser. it help to generate steam, and it is improving the efficiency and save the fuel consumption

(3) An economizer uses the waste heat from the boiler exhaust, that would otherwise be lost to atmosphere to (in most cases) preheat the feed water into the boiler.This improves the boiler efficiency and reduces fuel costs.

Competitive Advantage

1.Fuel saving: After the high temperature fuel gas released by fuel combustion transfers to the boiler water wall tubing, superheater, and reheater, the temperature is extremely high, the economizer makes it ideal for preventing heat loss. The economizer located at the flue of the boiler reduces the flue gas temperature, and maximizes the heat recovery to lower customer fuel costs.

2.Improvement of boiler steam drum working conditions: When entering the steam drum, the temperature of the feed water is increased after it has been heated using the economizer. The thermal stress caused by the temperature difference between the steam drum wall and the feed water is reduced, thus reducing the shrink and swell of the steam drum, and extends the service life.

3.Cost reduction of coal fired boilers: Water is being heated in the boiler economizer made using low temperature material. This makes the economizer a less costly replacement for high temperature boiler water wall tubing, and reduces overall boiler manufacturing costs.

When sizing economizers, consider flue gas volume, temperature, allowable stack pressure drop, boiler fuel type (like natural gas, coal, or oil), and energy recovery needs. Natural gas - designed economizers can clog on coal boilers or corrode on oil - fired ones. Some economizers prevent condensation by keeping flue gas hot, while others use corrosion - resistant materials to handle condensed gases for better heat recovery.

Internal heat exchangers

1.Subcooling may also be produced by superheating the gas leaving the evaporator and heading to the gas compressor.

2.These systems withdraw heat from the liquid line but heat up the gas compressors suction.

3.This is a very common solution to insure that gas reaches the compressor and liquid reaches the valve.

4.It also allows maximum heat exchanger use as minimizes the portion of the heat exchangers used to change the temperature of the fluid,and maximizeds the volume in which the refrigerant changes its phase.

Parameters

*Note:HD BOILER can bespoke special type of economizer according to customer's requirement.