zozen boiler
Home Service FAQs FAQ of coal-fired boilers What is the mechanism of economizer?

What is the mechanism of economizer?

15 Nov 2019

Economizer is one of steam boiler’s equipment which is used to heat feedwater before it is supplied into steam drum. Economizer is the heat exchanger equipment to increase boiler efficiency by absorbing heat recovery of flue gases. The lower temperature of flue gas out from stack, the heat loss will be less and the fuel which is needed to convert water into steam will be also less in certain circumstances. So it can be said that economizer can save the fuel efficiently.  Economizer will make temperature of feedwater higher, so steam boiler can produce steam easily.

The heating process of water in the economizer is like an heat exchanger, water is distributed inside tubes and flue gas outside tubes. The hot flue gas outside tubes flow and making contact with outside surface tube, so the heat transfer occur between hot flue gas and surface metal tubes by convection. Water inside tubes receives heat transfer from metal tubes, so temperature of water is higher than before enter economizer. Contact of flue gas flow to feedwater flow is regular and perpendicular. It is controlled and regulated by setting the flue gas flow.

Furthermore, feedwater that has been heated in economizer is sent to steam drum through connecting pipes. In the steam drum, feedwater will be boiler water and be heated again in water wall tubes to be saturated steam and superheater will make it as superheated steam.

The advantages of using economizer as initial heater are as follow:

- The metal wall of steam drum will not easy to be contracted, shrivel and broken because the incoming water is not cold condition so the cost maintenance will be smaller.

-  Increase steam boiler efficiency and decrease heat loss.

-  Save the fuel needed to perform combustion process

-  The size of furnace can be smaller because the requirement heat surface is less than without using economizer.

 

Related FAQs View More
Related news View More
  • ZOZEN Boiler: An Innovative Choice for Green Energy in the Pharmaceutical Industry
    In today's pursuit of health and environmental protection, the pharmaceutical industry is facing an energy revolution. Traditional steam boilers can no longer meet the industry's multiple demands for efficiency, environmental protection, and energy saving. Moreover, with increasingly strict environmental regulations and rising energy costs, pharmaceutical companies are becoming more cautious in their choice of boilers.   The pharmaceutical industry, a field related to life and health, has...
    19 Nov 2024
  • ZOZEN Biomass Boiler Brings Green Power for the Heritage and Innovation of Paper Industry
    In the heritage and innovation of traditional culture, China Xuan Paper Co., Ltd. plays an indispensable role. Xuan Paper, as an important medium for Chinese calligraphy and painting art, has extremely strict requirements for the environment and energy in its production process. With the company's development and the growth of market demand, the old boilers from the 1980s can no longer meet the increasing steam supply needs, making the selection of efficient and environmentally friendly steam bo...
    12 Nov 2024
  • ZOZEN Boiler Showcases at China Brew China Beverage 2024
    From October 28th to 31st, 2024, ZOZEN Boiler exhibited at the China Brew China Beverage 2024 (CBB 2024) held at the Shanghai New International Expo Center. As a benchmark exhibition for the entire industry chain of the liquid food industry in Asia, CBB serves as an important platform for ZOZEN Boiler to showcase its strength, expand its market, and promote international exchanges.   ZOZEN Boiler's Advanced Products Attract Wide Attention   At booth E1-D11, ZOZEN Boiler drew the ...
    05 Nov 2024

Find the Right Boiler For You

Name *

Email *

Products

Power/Capacity