View Full Version : 20 Ton water tube coal fired boiler for sale in India

11-12-2015, 12:17 AM
20 Ton water tube coal fired boiler is SZL series that used in textile industry, paper plant, food processing, etc. Our SZL series bi-drum assembled coal boilers have large market in India for its good performance and low maintenance cost. Coal is the most common energy in India, and for its cheap price, the chain grate coal fired boiler for sale in India is very popular.
SZL water tube coal fired assembled boiler for sale (http://www.zgboilers.com/Products/szl-assembled-traveling-grate-boiler.html) in India
1.The two sides of the furnace and the end combustion chamber adopt membrane water wall structure which is designed by our company independently and which was used in power station boilers before. It has the features of higher heat transferring efficiency, better heat transfer effect, lower heat loss, better air seal and no distortion in the boiler setting and no dust leak.
2.The tubes of water cool wall go down to the up side of the grate, which forms the front and back arches. This structure was successfully used in the field assemble boiler before. And this structure enables itself has additional heating surface and remains the original heating surface unchanged. So it has wider range of over load adjusting. The frame of the front and back arches are made of water cool tubes wall together with the cement mason work. In this way, the phenomena such as arch brick cracking or arch collapsing after long time high-temperature roasting the used three broke lines arch bricks, can be avoided, so that the service life of boiler can be extended.
3.The structure of the arches adopts the newest research product, the second prize of advance awarded by Xi'an Jiaotong University downside "a" structure. The front arch is high and short while the back arch is low and long and the part near the exit is inverse inclined type, while the front arch is 45°inclined type, they together form a downside "a" flame structure, which is make the lean coal combustion easier and it can adjust itself to a wide range of coal types. In this way, the flue gas is kept within the furnace a longer time, and the combustion efficiency is higher. The streamline shaped back arch can throw the unburned carbon grains in the middle and back part of furnace to the front, so that the coal can be easier to be ignited and the ignition lines is tide.
4.The distance between the front shaft and the back shaft of grate stoker is longer than other domestic products of the same type; in this way, the combustion time of fuel in furnace is extended and the combustion of coal can be more sufficient and the carbon content in the slag are reduced; meanwhile, the actual heating surface of the grate stoker is increased and the overload capacity of boiler is also enhanced.
5.The length of boiler is increased; the cubic of the furnace is enlarged so that the disadvantages of shop-assemble boilers such as insufficient power output and small cubic of the boiler are tackled.

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