As a boiler manufacturer focusing on technology research and development, ZOZEN Boiler has improved the performance of chain grate boilers, has optimized the chain grate boilers to make them have high efficiency and low NOx emissions, and has also successfully obtained the national utility model patents.

ZOZEN focuses on developing high-efficiency and low-NOx chain grate boilers

The chain grate boiler is a mature boiler type. It is simple for operation and management and easy to master, but it also has obvious disadvantages such as insufficient fuel combustion, poor fuel adaptability and high pollution, which does not meet the environmental protection standards. At present, boiler manufacturers mainly improve the chain grate boiler efficiency during combustion through lowering the exhaust gas temperature and excess air coefficient, membrane wall, threaded smoke tube, stratified feeding and fly ash backburning technology. However, the combustion pollutant control is still not good enough to change the whole industry.

In order to solve the above problems, ZOZEN cooperated with Shanghai Jiaotong University to conduct topic research on the chain grate boilers. Starting with the clean combustion technology, ZOZEN built the mathematical models to conduct combustion tests on various fuels and scientifically arranged the furnace arch, furnace wall, furnace heating surface and secondary air according to the test results to improve the combustion efficiency and reduce the initial emissions of NOx, sulfur dioxide and other pollutants.

ZOZEN utility model patent certificates

With the research development, ZOZEN has obtained a series of utility model patents including a kind of arch structure used for high-efficiency and low-NOx chain grate boiler (ZL201821341630.5), a kind of high-efficiency and low-NOx chain grate boiler (ZL201821340243.X), and a kind of high-efficiency and low-NOx chain grate boiler (ZL201821341096.8), etc.

ZOZEN effectively improved the product performance of chain grate boilers

Among them, the chain grate boiler in the ZL201821340243.X optimized the exhaust outlet setting, arch setting area and shape, etc. The application of the technical solution in the patent can improve the boiler thermal efficiency to 90% and reduce the NOx emission to less than 100mg/Nm3, so as to help users enhance the combustion efficiency, reduce the pollutant emissions and reduce the equipment and operating costs.

The structure chart of ZOZEN utility model patent ZL201821340243.X

Since the establishment, ZOZEN has been designing and manufacturing chain grate boilers with mature technology and projects covering nearly 100 countries and regions around the world. At present, ZOZEN has chain grate boilers including the DZL, SZL, DHL, SHL series industrial boilers and ZZ series power generation boiler. The acquisition of above patents not only greatly improved the performance of ZOZEN products, but also further improved the intellectual property protection system of ZOZEN Boiler, so as to give full play to the advantages of independent intellectual property rights, promote technological innovation, and enhance ZOZEN’s core competitiveness.