DZL series screw tube boiler is a new type of product to replace the old boiler in China. The coal fired boiler use adopts screw pipe to strengthen the heat transfer, improve the heat transfer coefficient, reduce the volume of the boiler, and reduce the cost of the user. The outlet water temperature ≤130℃ of the hot water boiler does not have a tail heating surface, steam boiler only horizontal layout of air preheater or economizer, so that the smoke in the boiler room, duct layout is simplified. Among them, the air preheater is equipped with a heat conduction element at the tip of the boiler superconducting heat pipe to maximize the use of waste heat, improve the thermal efficiency of the boiler and reduce the user’s cost.
Coal-fired steam boiler adopts the new process of integral casting of refractory concrete, which has the advantages of good overall sealing, less heat loss and strong and durable. Compared with water tube boiler, the height of boiler room can be reduced obviously. DZL series steam boiler has the advantages of simple and reasonable structure, small volume, safe and reliable operation, fire foot, less air leakage, good environmental protection effect, simple operation and strong maintainable performance. High degree of assembly, short installation cycle, one time investment, low operating cost.
Coal fired boiler use a new furnace design to maximize the efficiency of the fuel combustion process. Effectively reduce fuel cost and improve thermal efficiency (80%-85%). DZL type boiler adopts new structure steam boiler, the use of a single cylinder longitudinal arrangement, the furnace on both sides are arranged with water wall, the upper end and the drum welding, the lower end and the left and right collection box welding respectively. The space between the rear arch and the drum is arranged with convection tube bundles. The upper end of the tube bundle is welded with the drum and the lower end is welded with the collection boxes. The structure is very compact.
This series of coal-fired boilers reasonably organize the combustion in the furnace, and the furnace is designed into two parts: combustion chamber and combustion chamber. In the design of the boiler, the furnace is designed into a combustion chamber and a burning chamber, which is conducive to strengthening the combustion of fuel in the combustion chamber and reducing the content of flammable substances and fly ash. The boiler has strong adaptability to coal, high thermal efficiency, good environmental performance, sufficient boiler output, convenient use and maintenance, etc. Coal-fired steam boilers are widely used in petroleum, chemical industry, medicine, metallurgy, thermal power generation and urban central heating and other fields. And with the domestic major gas companies, oil fields, environmental protection companies, boiler installation companies and so on to establish a long-term cooperative relationship, products throughout the country by the majority of users praise.
This series of boiler products rated steam pressure 1.25MPa, wide adaptability of coal, design structure is compact, novel appearance. Boiler running fuel from the coal hopper fell on the grate, into the furnace after combustion, the flame through the rear arch refraction upward through the body on both sides of the burning chamber to bend to the front smoke box, and then from the front smoke box back to the pot tube bundle, through the smoke box into the biomass economizer, and then by the induced draft fan pumping through the flue to the chimney exhaust to the atmosphere. The main heating surface pipe of the boiler is made of seamless steel tube for 20# low and medium pressure boiler, and the drum is made of special steel plate for boiler. The inner diameter of the drum is Φ1400mm and the wall thickness is 10mm. The left and right collecting boxes are made of Φ159 ×6 seamless steel pipe.
Coal fired boiler use in order to better achieve the purpose of dust removal in the furnace, the middle wall adopts space structure. The front wall, middle wall and back wall of the boiler are made of common firebrick masonry. Steam boiler grate distribution wind is reasonable, large combustion chamber, fuel applicability is strong. Full combustion. Because the high temperature flue gas first enters the settlement chamber, and then enters the two flue flue and the front smoke box from both sides, the smoke and dust removal effect is good. Zozen Boilers produce and manufacture various types of boiler products, we have established friendly and cooperative relationship with many customers over the years, welcome to consult and purchase!