Introduction to the Structure of SZL Double Drum Coal fired Steam Boiler:

The SZL boiler system is a double drum longitudinally arranged chain furnace drainage pipe steam boiler. The convective arrangement of the heating surface has high heat transfer efficiency, a reasonable water circulation system, large water capacity, large steam space, and good steam quality. The convective heating surface has the greatest abundance, and the efficiency characteristics of boiler operation are stable and have a certain degree of overload operation capability. The lightweight chain belt assembled grate is equipped with a stepless speed regulation device, making the adjustment methods for the optimal combustion conditions more complete. The combustion is achieved by using a lightweight chain grate for mechanical coal addition, and is equipped with drums and induced draft fans for mechanical ventilation. The fuel falls from the coal hopper onto the grate and enters the furnace with the grate for combustion. The flue gas passes through the combustion chamber at the upper part of the rear arch and enters the first bundle of pipes from the combustion chamber to the front smoke box, then folds into the second bundle from the front smoke box to the rear smoke box. It is drawn into the flue, dust collector, and chimney by the induced draft fan and finally discharged into the atmosphere. The boiler has a high level of automation, with automatic adjustment of boiler feedwater, high and low water level alarms, low water level interlock protection, and interlock protection for the intake and exhaust fans. Mechanization of coal loading and slag removal operations in boilers, with complete supporting auxiliary equipment.

SZL type double drum coal-fired steam boiler product features:

The cross-sectional ratio between the descending surface and the ascending pipe of each heating surface is reasonable, and the water resistance is low. As long as the water quality meets the GB1576 standard, there will be no unsafe factors such as pipe bursting during operation; Stable combustion conditions. The matching of the front and rear arches is reasonable, the coverage of the furnace arch is large, the furnace temperature is high, and it can burn when the combustible volatile matter of coal is greater than 20%. The air volume required for each combustion stage of the fuel in each air chamber can be artificially adjusted, and the horizontal air pressure is consistent, so there will be no partial combustion phenomenon. The lower part of each air chamber is equipped with a pull-out cast iron ash discharge door, which is not easy to deform, easy to use, and has good sealing performance. The coal slag contains no more than 10% carbon, and the thermal efficiency of the boiler is around 82%. The boiler is equipped with soot blowers in the convection tube bundle area. After entering the convection tube bundle area, the flue gas flows through the smoke wall and turns in an S-shaped direction. The dust in the flue gas is separated by inertia and falls into the four gravity type automatic ash hoppers set below. It is transported along with the furnace and falls into the slag hopper with the coal slag, which is discharged from the furnace body by the slag extractor. The original emission of smoke and dust from this furnace meets the national environmental protection requirements.

Economy of SZL type double drum coal-fired steam boiler:

High thermal efficiency, fuel saving, and good economy; Rated as an energy-saving product by the National Economic and Trade Commission and the Henan Provincial Environmental Protection Bureau.

The automatic control and fault protection features of the product

Boiler steam pressure automatic regulation system

When the control system of the boiler steam pressure automatic regulation system enters the working state and meets the necessary conditions for combustion:

When the steam pressure inside the pot is higher than or equal to the set upper pressure limit, the control system outputs a stop signal. Until the combustion stops.

Water supply self-control:

When the system is working normally, start the water supply pump, the water pump works, and the water level differential pressure transmitter detects the water level signal to maintain the stability of the boiler drum water level. Ensure the quality of steam. The water level regulating instrument displays the boiler water level.

Manual control: The water pump can also be manually controlled by tapping the manual buttons on the control panel.