PT.PLN (Persero) group purchased another 3 sets of 7MW power generation boiler, for SITANG Indonesia power plant. This is the 3rd time that ZOZEN boiler worked for PT.PLN (Persero) group. The boiler is circulating fluid bed, till now ZOZEN’S has offered 7 power generation boilers for them. Circulating fluid bed boiler has sufficient burning, helium oxide emission is much lower than other coal-fired boilers, only 200ppm. Under the environment protecting trend, circulating fluid bed boiler is the top choice of power generation plants.
The CFB boiler used in power plant has perfect structure arrangement, boiler membrane wall and light furnace wall structure, good heat preservation and sealing performance. The series boiler has a wide range of load regulation and is easy to adjust. CFB boiler uses light furnace wall structure, good thermal insulation performance, no ash leakage, excellent environment. Using fly ash high temperature separation technology, fly ash circulation fluidization in combustion technology, the boiler combustion more fully. This type of boiler has reliable water circulation, fast boiler start-up and low temperature stress. Grate cooling effect is good, low failure rate.
Circulating fluidized bed boiler technology is a low pollution clean combustion technology developed rapidly in recent years. Circulating fluidized bed boiler has many advantages such as wide fuel adaptability, high combustion efficiency, large load regulation, desulphurization and low NOx emission, simple fuel pretreatment system, easy to realize comprehensive utilization of ash and slag, etc., it is widely used in steam production, heating, cogeneration and power station boiler. 7MW power generation boiler membrane water wall hanging furnace and separator inlet for membrane water cooling flue. The separator and the central barrel are improved with low resistance and high separation efficiency. Adopt the patent technology of material counter device and equipped with independent fan for air, save electricity consumption.
The boiler can be designed according to different types of coal. This series of boilers product can be used in urban and industrial and mining enterprises and other central heating heat source host, a single unit can provide 300,000-400000m ² building area of heating, also can be used as peak boiler in thermal power plant, adjust the operation of urban heat network, for industrial and mining enterprises that need a lot of process hot water the boiler can also meet the requirements. Power plant boiler water cycle reliable, high combustion rate, low pollution emissions of large capacity layer combustion chain grate boiler energy saving products. The upper part of furnace is arranged with wing wall type 11 superheater and water cooling screen. In order to reduce the wear of tube bundles in the furnace, the design value of flue gas flow rate between tubes in this area is 4.93m/s (<5m/s), and effective anti-wear measures are taken in the structure.
Circulating fluidized bed boiler is a new type of efficient, clean combustion boiler, and other types of boiler main difference lies in the different combustion mode. The material in the furnace is fluidized, and the fuel and desulfurizer are repeatedly low-temperature combustion and desulfurization reaction through multiple cycles, so that the unit can achieve low emissions, high combustion efficiency, desulfurization efficiency, and has the obvious advantages of wide adaptability of coal combustion, good load regulation, and easy comprehensive utilization of ash and slag. The furnace of 7MW power generation boiler is membrane type water wall suspension closed structure. Superheater, economizer and air preheater are arranged in the tail shaft. Use water cooling air chamber and water/cloth air board, water under the bed. The boiler heating surface layout is fully reasonable, boiler temperature rise and pressure boost fast. Large range of load regulation, stable operation under 30-110% load.