DZL series coal-fired steam boiler

DZL series coal-fired steam boiler


1, The horizontal drum is arranged in a longitudinal direction with three return water-fired tube boilers, and the water-cooled wall tubes are densely arranged on both sides of the furnace;

2, two returning threaded tobacco pipes are arranged in the drum, and the flue gas forms three return flows;

3, the heating area is large, the heat transfer effect is good, the output is sufficient, and the exhaust gas temperature is low;

4, it uses the front and rear arches of matching, so that the combustion conditions are good and the combustion is sufficient;

5, it can be adjusted before and after the arch to make it suitable for a wide variety of coal;

6, fast loading factory, short installation period, low installation cost, the boiler is arranged in a single layer, infrastructure costs are saved;

7, pressure (temperature), water shortage using multiple interlocking protection to ensure safe and reliable operation of the boiler;

8, the furnace wall has two types of light and heavy, users can use as needed;

9, two types of atmospheric pressure and pressure, users can use according to demand;

10, in line with the requirements of GB13271 smoke and dust emissions;


DZL series coal-fired steam boiler is a horizontal three-return water-fire tube hybrid boiler with a bundle of threaded pipes arranged in the drum. A light pipe water cooling wall is installed on the left and right sides of the furnace. It adopts light chain grate to realize mechanical coal feeding, equipped with blower and induced draft fan for mechanical ventilation, and equipped with scraper type slag discharging machine to realize automatic slag discharge. The front and rear arches of the furnace adopt a new energy-saving technology furnace arch. The fuel falls from the coal hopper to the grate and enters the grate. After the flame passes through the rear arch, it is refracted upwards and turned to the front smoke box through the combustion chambers on both sides of the main body, and then the front smoke box is folded back into the inner tube bundle, and the rear smoke box is passed. Enter the economizer, then draw by the induced draft fan through the flue to the chimney to the atmosphere.

Technical data

Model Rated evaporation Rated working pressure(MPa) Rated steam temperature Thermal efficiency(%)
DZL1-0.7-M 1 0.7 170 79
DZL1-1.0-M 1 1.0 184 79
DZL2-1.0-M 2 1.0 184 79
DZL2-1.25-M 2 1.25 194 79
DZL2-1.57-M 2 1.57 204 79
DZL2-2.45-M 2 2.45 225 79
DZL4-1.25-M 4 1.25 194 79
DZL4-1.57-M 4 1.57 204 79
DZL4-2.45-M 4 2.45 225 79
DZL6-1.25-M 6 1.25 194 79
DZL6-1.60-M 6 1.6 205 79

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