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ZOZEN Boiler Facilitates Power Plant “Oil-to-Gas” Upgrade

15 Jul 2025

On March 20, 2025, the Guizhou Jinyuan Zhijin “Replacing Small Units with Large Ones” Relocation Project (2×660 MW), under State Power Investment Corporation, successfully achieved the first ignition of its boiler. This project replaced traditional oil-fired ignition fuel with liquefied natural gas (LNG), setting a new precedent for employing clean energy in 660 MW ultra-supercritical “W” flame boilers. As a key equipment supplier for this project, ZOZEN Boiler provided tailor-made, high-efficiency, and intelligent SZS series gas-fired superheated steam boilers, ensuring reliable support for the smooth progress of the project.

ZOZEN Gas-fired Steam Boilers Empower Power Plants

ZOZEN Gas-fired Steam Boilers Empower Power Plants

During the boiler “oil-to-gas” conversion, the client raised high requirements for equipment performance, safety, energy conservation, environmental protection, and intelligent operation. As an industry-leading boiler manufacturer, ZOZEN Boiler leveraged its rich experience and technical advantages to provide SZS series gas-fired superheated steam boilers, successfully meeting the following core needs:

 

Environmental Benefits:

The SZS series gas-fired boilers provided by ZOZEN use LNG as fuel, significantly reducing pollutant emissions compared to traditional oil-fired boilers. For the same amount of fuel consumption, carbon dioxide emissions are reduced by 53%, while nitrogen oxides and sulfur compounds emissions drop by over 90%, fully complying with national environmental protection policies and low-carbon development goals.

 

Economic Efficiency:

As a clean fuel, LNG not only offers high combustion efficiency but also effectively lowers operating costs. Through the “oil-to-gas” transition, the client can save on annual fuel procurement costs, significantly enhancing project economic benefits.

 

Safety & Intelligence:

ZOZEN’s SZS series gas boilers are equipped with advanced automatic control systems, featuring real-time monitoring of key parameters such as steam pressure, temperature, and liquid level. Integrated fault self-diagnosis, alarm, and handling modules greatly improve the safety and stability of equipment operation.

 

Customized Solutions:

ZOZEN Boiler provides tailored solutions based on client needs, ensuring seamless integration between the boiler equipment and the LNG gasification station. The boilers are linked with the central control system, forming a three-level protection system of “prevention—monitoring—emergency,” further enhancing project safety and system efficiency.

 

ZOZEN Gas-fired Steam Boilers at the Project Site

ZOZEN Gas-fired Steam Boilers at the Project Site

 

Taking this project as an opportunity, ZOZEN Boiler will continue to deepen innovation in clean energy technology, helping more clients achieve both environmental and economic benefits. In the future, ZOZEN Boiler will adhere to the development philosophy of “high efficiency, energy saving, environmental protection, and intelligence,” actively promoting the thermal power industry toward higher efficiency and cleaner production, and contributing to the achievement of the “dual carbon” goals.

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