An air preheater is used to preheat the fuel which further increases the boiler efficiency. It is designed to heat air before another process by extracting the waste heat from the flue gases leaving the boiler to effectively reduce the flue gas temperature and improve the thermal efficiency.
Heat treatment is an essential part of the manufacturing process, involving heating a metal or alloy to a specific temperature and then cooling it to harden the material. In the manufacturing process of boilers, the following pressure components require post-weld heat treatment: alloy steel pressure components and carbon steel pressure components which include butt joints with wall thickness greater than 30mm, the cylinders of internal combustion boilers, and T-joints with tube sheet wall thickness greater than 20mm. As a professional industrial boiler manufacturer, ZOZEN Boiler always strictly follows the boiler safety technical specifications to conduct heat treatment on specified boiler components, which effectively reduces the residual stresses in the material that have been introduced by welding and improves the boiler performance.
ZOZEN WNS oil-fired and gas-fired boiler is one of the best-selling series of energy-saving and environmental protection boilers in China. The inside of the boiler consists of large diameter corrugated boiler, threaded smoke tube, and other boiler components.
WNS series and SZS series gas-fired steam/hot water boilers are the best-selling products of ZOZEN Boiler, which have the advantages of high thermal efficiency over 98%, emission of nitrogen oxides below 30mg/nm, excellent energy saving and environmental protection performance, and are well received by domestic and foreign markets. The capacity range of ZOZEN gas-fired steam/hot water boiler is 1-110 t/h and 0.7-116 MW, which can meet various production and heating needs of enterprises.
WNS series gas-fired steam boilers customized by ZOZEN Boiler have the advantages of high thermal efficiency, strong environmental protection performance and automatic operation. It is commendable that the WNS series gas-fired boilers adopt the patented appearance of ZOZEN Boiler (patent No. ZL202030031426), which has beautiful appearance and good corrosion resistance.
The large-scale fiber laser cutting machine being developed by ZOZEN Boiler is similar to the existing plasma cutting machine, and has the characteristics of high precision, good repeatability, numerical control programming and so on. Besides, it has the advantages of faster processing speed and higher precision. The accuracy of cutting steel plates can be controlled within 1 mm, which effectively improves the welding and assembly quality of boilers.
ZOZEN SZL series biomass-fired steam boiler is package or shop-assembled water tube boiler with double steam drum and chain grate stoker structure. According to different capacity, different numbers of independent air bins are arranged from front to back of the grate. The user can reasonably adjust the air distribution according to different combustion conditions to ensure that the fuel is fully burnt.
ZOZEN Boiler provided a set of reliable steam boiler for the newly built biomass power generation project of BİYOSAN ENERJİ ÜRETİM DANIŞMANLIK A.Ş., a famous local biomass energy production company. The boiler equipment accelerated the construction of a green and low-carbon recycling economic system for users. ZOZEN SZL series biomass-fired boiler supplied steam for this project. The boiler is shipped with the shop-assembled structure, which is composed of two parts: the combustion chamber and chain grate. According to the characteristics of different biomass fuels, the height of combustion chamber can be appropriately increased.
