Recently, a set of ZOZEN mid-temperature and mid-pressure gas-fired boiler with an O-type structure which is newly launched has been put into use at the Changfeng coking gas thermal power project base.

ZOZEN gas-fired superheated steam boiler is in the commissioning

ZOZEN becomes the gas-fired boiler supplier of Changfeng coking gas thermal power project

Heilongjiang Changfeng Coking Co., Ltd., producing coke, tar, crude benzene and other chemical products, invested more than 60 million RMB on the 6 MW coal gas thermal power project in the second half of 2019. The steam boiler, fired by the coke oven gas which is a by-product of the coking plant, produces superheated steam which further drives the steam turbine to generate electricity. The project is expected to generate 60 million kWh of electricity per year and form a heat supply network covering 300,000 square meters.

The gas-fired boiler with a rated pressure of 3.82 Mpa and a steam temperature of 450℃ is a kind of A-grade mid-temperature and mid-pressure boiler, which sets high requirements for boiler design and manufacture. On the basis of extensive research and demonstration, ZOZEN’s technical department develops the domestically advanced gas-fired boiler with an O-type structure. The boiler has the advantages of compact structure, good furnace flame filling, small on-site installation workload and lower main engine costs.  

ZOZEN gas-fired superheated steam boiler is operating at Changfeng Coking

ZOZEN mid-temperature and mid-pressure boiler has reliable quality

There are many difficulties for the design of mid-temperature and mid-pressure gas-fired boiler, especially the structure of superheater which is prone to fatal problems such as insufficient superheating temperature, overtemperature and even tube explosion. Relying on the powerful R&D and design teams, ZOZEN Boiler produces the boiler with the reasonable structure and high steam quality and also solves the safety problems of boiler operation. Meanwhile, ZOZEN Boiler can control the temperature fluctuations within a small range to make the boiler performance more stable.

The drum of superheated steam boiler is one of the main force bearing parts, whose thickness can reach 60mm which is four times thicker than common boilers. With the advanced CNC plate rolling machine and drum drilling equipment, ZOZEN Boiler can conduct the processing of raw materials as thick as 100mm with the high precision. It can not only improve the working efficiency, but also enhance the finish degree of the drum and reduce the size error. In addition, ZOZEN also has the automatic production line of serpent tube, production line of membrane wall and other large-scale production equipment.