This series of products are three-pass water-fire tube boilers. Water-cooled wall tubes are installed on both sides of the furnace. Two sets of smoke tubes are arranged inside the boiler barrel. The boiler is equipped with induced draft fans for mechanical ventilation. The combustion equipment adopts a light chain grate, which can be equipped with a scraper-type slag extractor to mechanize coal loading and slag removal. Coal falls from the coal hopper onto the grate and enters the furnace. After entering the furnace, the radiant heat reflected by the parabolic front arch promotes rapid ignition. The flame burns out through the upper part of the rear arch, and the flue gas enters the first set of smoke tubes to the smoke box, then returns from the front smoke box and enters the second tube set, and then enters the dust collector through the cast iron economizer or other waste heat utilization device, and is drawn to the chimney by the induced draft fan. The fuel for this series of boilers is Type II bituminous coal. The boiler water quality shall comply with the requirements of GB/T1576-2008 'Industrial Boiler Water Quality'. After the boiler is equipped with a dust collector, the smoke and dust emission shall comply with GB13271-2001 'Boiler Air Pollutant Emission Standard'. The boiler installation shall comply with GB50273-2009 'Construction and Acceptance Specification for Boiler Installation Engineering'. Before the boiler is used, registration procedures must be completed with the special equipment management department of the local quality and technical supervision bureau in accordance with the 'Boiler Use Registration Method'. Stokers must obtain a stoker operation certificate before operating the boiler, and can only operate boilers that are not higher than the qualified category of the examination.

This series of products are three return water fire tube boilers. Water wall tubes are installed on the two sides of the furnace, and two groups of smoke tubes are arranged in the drum. The boiler is equipped with drums and induced draft fans for mechanical ventilation. The combustion equipment adopts light chain grate, and scraper slag extractors can be installed to mechanize coal feeding and slag discharge.

After the coal falls onto the grate from the coal hopper and enters the furnace, the radiant heat is reflected by the parabolic front arch to promote its rapid ignition. The flame is burned out through the upper part of the rear arch, and the flue gas enters the first group of flue pipes to the flue box upward, then turns back from the front flue box and enters the second pipe group, and then enters the dust collector through the cast iron economizer or other waste heat utilization devices, and is pumped to the chimney by the induced draft fan.

The boiler fuel of this series is class II bituminous coal.

The boiler water quality shall meet the requirements of gb/t1576-2008 industrial boiler water quality. After the boiler is equipped with a dust collector, the smoke and dust emission shall comply with gb13271-2001 emission standard of boiler air pollutants, and the boiler installation shall comply with gb50273-2009 code for construction and acceptance of boiler installation engineering.

Before the boiler is used, it must go through the registration procedures with the special equipment management department of the local bureau of quality and technical supervision in accordance with the boiler use registration measures. The stoker can only operate the boiler after obtaining the stoker operation certificate, and can only operate the boiler that is not higher than the examination qualification category.