Boiler heating surface is the main heat transfer equipment of boiler, which can be divided into main heating surface and auxiliary heating surface. In order to enlarge the heating surface of the boiler, ZOZEN Boiler has independently designed and produced various energy-saving equipment, such as economizer, condenser, air preheater, which can match the actual working conditions of different users.
Boiler economizer is an energy-saving device installed at the tail of boiler flue. Its working principle is to heat boiler feed water into saturated water under drum pressure by absorbing waste heat in flue gas. As the economizer absorbs the heat of high temperature flue gas, it further reduces the exhaust temperature of flue gas, thus reducing the exhaust loss, improving the thermal efficiency of the boiler and effectively reducing the fuel consumption of the boiler. It is one of the important equipment of boiler system.
ZOZEN ZZ series medium-temperature and medium-pressure gas-fired steam boiler adopts "D" type 2 passes. It is double-drum natural circulation water tube boiler. The flue gas turns at the back of the furnace, enters the convection tube bundle of the second pass, then leaves the boiler body, and enters the economizer and condenser in sequence.
ZOZEN SZS series condensing gas-fired boilers are typical high-efficiency, energy-saving and environment-friendly boilers with large furnace volume, sufficient radiant heating surface, sufficient fuel combustion and high thermal efficiency of 98%. With advanced combustion equipment, the emission of nitrogen oxides can be less than 30 mg/nm3.
Relying on the scientific and technological innovation and cooperation with Shanghai Jiaotong University, ZOZEN Boiler develops the new generation of biomass boilers, which not only solves the problems such as the furnace arch and door burning out, hopper burning and feed stopper coking, but also improves the biomass boiler performance.
ZOZEN WNS series gas-fired and oil-fired boiler is equipped with the advanced condenser, which is a kind of flue gas waste heat exchanger whose working principle is the same as the economizer at the end of the coal-fired boiler. After a condenser is installed at the end of the boiler's flue gas duct, the high-temperature flue gas passes through the flue gas duct and the condenser at the same time, which can heat the water in the condenser, increase the feed water temperature and lower the exhaust gas temperature to achieve the goals of saving fuel and improving the thermal efficiency.
SZS series boiler is designed with longitudinal double drums and " D " type chamber structure. Furnace is placed on the right and convection tube bank is on the left, super heater is arranged at convection tube bank. The body is fixed on the basement by middle and both end flexible supports and make the boiler expand horizontally sideways. Around the furnace is membrane water cooling tube wall. Furnace and tube bank are totally separated by the membrane water tube cooling wall at the left side of the furnace. The back part of bundle is sparse shift structure, front part is aligned structure. Smoke from furnace outlet enters re-burning chamber, convection tube bank area and then from left front part enters spiral fine coil economizer and condenser, and finally is discharged to atmosphere through chimney.
ZOZEN SZL series coal-fired (biomass-fired) boilers have wide fuel adaptability, applicable to a wide range of fuels including all kinds of coals and biomass particles; they have the charactics of sufficient output, safety, high effciency and high degree of automation. Meanwhile, this series of boilers is equipped with an advanced control system, which is safe and worry-free.
