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.
Welding is a vital work in the process of boiler manufacturing, and it has an important influence on the quality of the boiler. In the production base of ZOZEN Boiler, a professional boiler manufacturer, the front-line welders always ensure the quality of the boiler welding seams with their superb technology and responsible attitude. At the same time, ZOZEN Boiler has introduced the advanced welding equipment to realize the welding automation of the main components such as drums, membrane walls, serpentine tubes, steel frames, etc.
The boiler as a kind of common special equipment, the quality, specification and mark of its raw materials should meet the requirements of the applicable material specification. According to the different requirements of various materials purchased, ZOZEN Boiler has established a strict acceptance system to ensure the raw materials in compliance with the material specification and to prevent the unqualified raw materials entering into the production processes. For the safe operation of the boiler, sectional materials will be strictly re-inspected to ensure the boiler pressure strength.
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.
As a professional industrial boiler manufacturer, ZOZEN Boiler has always maintained the advanced technology and equipment. It owns 600 sets of advanced production equipment in the industry, with high processing precision and high efficiency, guaranteed boiler quality, and realized large-scale production with short delivery period.
In 2020, ZOZEN Boiler successfully supplied boilers in Venezuela, Thailand, Afghanistan, Karachi, Zimbabwe and many other countries. Especially in Afghanistan, ZOZEN provided one set of SZL series coal-fired steam boiler for Baheer Group, providing heat source for the paper production line. It successfully passed the environmental protection inspection organized by Afghan government, which had been proved to meet the local environmental protection standards due to the high combustion efficiency and super-clean flue gas emissions.
The packaged structure is another characteristic of ZOZEN boiler. After the gas/oil-fired thermal oil heater is delivered to the project site, it can be put into use only by connecting the gas/oil, electricity, which can save a lot of installation costs. What's more, the boiler has the patented equipment to completely remove the moisture from the thermal oil heater after the hydraulic pressure test and reduce the oil dewatering time. Take the 6 million kcal as an example, it usually takes 10 days for oil dewatering while ZOZEN only needs 2 days, which reduces the 80% time for dewatering and directly save the costs for about 30,000 RMB.
