Breakdown of Coal Feeding System during Operation of Circulating Fluidized Bed.
(Question Details) Specific Performance:
Broken coal is one of the most common failures of the coal feeder. The coal feeder is the lifeline of the boiler. Its normal operation is the basic guarantee for the normal and stable operation of the boiler, because it’s common occurrence that the coal feeder breaks the coal, especially when multiple coal feeders broken coal simultaneously, the improper handling resulting in overheating, explosion, coking, shutdown and other failures.
Answer:cause of failure:
(1) The particles of fluidized bed boiler fuel are coarse, but the fine particles in the fuel have a large amount of moisture. It is very easy to bond, resulting in the clogging of coal bunker and coal feeder.
(2) Coal particles are jammed and squeezed in the coal feeder, causing the coal feeder chain to break.
(3) Impurities in coal, such as woven bags and tree blocks, enter the coal feeder, causing coal feeders to jam, blockage, trip and break pins.
Troubleshooting:
(1) Fluidized Bed boilers are equipped with dry coal facilities according to the physical characteristics of the coal and the actual conditions at the site. effectively reducing fine particles in the coal (such as adding a bypass before the coal crusher) to prevent excessive comminution of the coal, reduce the possibility of sticky coal. According to the actual situation of each coal factory, the boiler coal bunker is equipped with a reliable loosening device, and an electric or manual regulating valve is installed under the coal feeder to ensure the continuity and uniformity of coal feeding.
(2) Make a good selection of the coal supply system and strengthen the inspection of the coal supply system during operation.
(3) Strengthen the management and quality control of fuels to prevent unbreakable debris from entering the coal supply system.
In order to cope with the above failures, ZOZEN has innovatively designed an advanced air distribution system. The stocker can adjust the amount of front and rear air flow according to the types of coal and combustion, and we designed a scale grate, crossgirder grate and reciprocal grate other forms to select according to the different types of coal, to solve the coal particles in the coal feeder clogging, extrusion, resulting in coal feeder chain climbing, broken chain and other issues.
-
DHX coal-fired CFB (circulating fluidized bed) steam boilerLive Chat20-75 t/h1.25-1.6 MPa
-
QXX coal-fired CFB (circulating fluidized bed) hot water boilerLive Chat14-58 MW1-1.25 MPa
-
DHL series coal-fired steam boilerLive Chat20-75 t/h1.25-5.4 MPa
-
Email us
-
WhatsApp: +86 18861589035
WeChat: +86 13506150756
Live Chat
-
In recent years, Venezuela's food processing sector has experienced rapid growth alongside gradual economic recovery, with meat processing as a vital component of its food industry undergoing continuous expansion. Meat processing imposes stringent requirements on equipment performance, particularly steam boilers as core production facilities, whose efficiency, stability, and environmental compliance directly impact product quality and operational costs. This context has driven increasing demand ...25 Mar 2025
-
Luxshare Precision Technology Co., Ltd., established in 2017 with a total investment of 18 billion RMB, is a globally renowned manufacturer of precision structural components. It serves major brands in fields such as information technology, automotive, and consumer electronics. As an important overseas branch, Luxshare Precision (Vietnam) Co., Ltd. has been rooted in Bac Giang Province, Vietnam, since 2019, focusing on providing high-quality products to the global market. With rapidly growing ma...18 Mar 2025
-
In the context of the global energy transition and the ongoing advancement of carbon neutrality goals, ZOZEN Boiler’s R&D team achieved multiple industry breakthroughs in 2024. With systematic technological upgrades, the company is laying a solid foundation for high-quality development in 2025. As a leading enterprise in the industrial boiler sector, ZOZEN Boiler is showcasing the strength of Chinese manufacturing to the world through continuous innovation and product advancements. &n...11 Mar 2025