SZL series water tube boilers have the characteristics of high automation level, safe and efficient operation, convenient installation and so on. The design of the boiler is optimized and the problem of easy coking is solved. The thermal efficiency of the SZL types of boilers is significantly improved and the fuel cost is saved. The water wall on both sides of the furnace adopts membrane water wall structure; The water wall pipe of the front and back wall of the furnace extends downward to the upper part of the grate to form the front and back arch, which not only increases the sealing performance of the boiler, but also increases the volume of the furnace and the heating surface, and strengthens the strength of the back arch.
Its operation process is mainly by the fuel from the coal hopper fell on the grate, with the grate into the furnace after combustion. The smoke enters the convection tube bundle area and passes through the smoke barrier wall. The flue gas flows to the S-shaped bend, and the dust in the flue gas is separated by the inertia effect, and then falls into the four gravity type automatic ash hopper set below. With the grate running and the cinder into the slag hopper, from the slag machine discharge furnace body. Water tube boiler has the advantages of high automation level, safe and stable operation, strong fuel applicability and high fume emission standard.
SZL types of boilers has high heat transfer efficiency by convection arrangement on the heating surface, and the efficiency characteristics of boiler operation are stable. And has a certain overload operation capacity. The water circulation system is reasonable, the water capacity is large, the steam space is large, the steam quality is good. The section ratio of descending surface and rising tube on each heating surface of this series of boiler products is reasonable and the combustion condition is stable. The matching of front and back arches is reasonable, the coverage rate of furnace arches is large, the furnace temperature is high, the combustible volatiles of coal are more than 20% can be burned.
The air chamber of water tube boiler can be artificially adjusted according to the air quantity required by each combustion stage of the fuel. The transverse air pressure is consistent, and there will be no partial burning phenomenon. The lower part of the air chamber is equipped with the suction type cast iron ash door, which is not easy to deformation, easy to use and good sealing performance. When the carbon content in the cinder is not more than 10%, the thermal efficiency of the boiler is above 85%. Its furnace wall adopts the new technology of high temperature resistant firebrick and heat-resistant concrete, which has good sealing, no air leakage and small heat dissipation loss.
The boiler adopts short and high front arch and low and long back arch to ensure the stable combustion of coal. At the same time, the corresponding furnace arch can be designed according to different kinds of coal to meet the needs of combustion. Boiler water circulation is good, high evaporation efficiency, good performance to adapt to load changes, high thermal efficiency. The design and manufacture absorb the characteristics of quick installation boiler, beautiful appearance, boiler room only single layer layout, less investment in civil engineering.
SZL types of boilers is equipped with high efficiency energy saver, which can make full use of boiler flue gas heat. Effectively reduce the boiler exhaust temperature, improve the boiler thermal efficiency. Complete auxiliary machinery, drum, induced draft fan, water pump, dust collector, etc. can meet the requirements of the boiler, wide adjustment range, convenient speed regulation. The boiler has realized the water supply, coal, grate operation, drum, air diversion automatic control, overpressure (steam boiler), overtemperature (hot water boiler), high and low water level (steam boiler), water supply, grate operation, drum, air diversion operation chain protection, to ensure the safe operation of the boiler.