On March 20, 2025, the State Power Investment Corporation (SPIC) Guizhou Jinyuan Zhi Jin 2×660 MW ultra-supercritical power plant project marked a major milestone—its boiler achieved first-time ignition using liquefied natural gas (LNG) instead of traditional fuel oil. This breakthrough not only marks the successful ignition of a 660 MW “W” flame boiler with clean energy but also sets a new benchmark for green power generation in China. 

SZS series 35 tph gas water tube steam boiler

As a key equipment supplier for this landmark project, ZOZEN Boiler delivered a customized 35 tph gas water tube steam boiler from its SZS series, ensuring high efficiency, low emissions, and intelligent operation. This advanced unit played a pivotal role in enabling a smooth transition from oil to gas, aligning perfectly with China's carbon reduction and environmental protection policies.

Designed for LNG combustion, the SZS series 35 tph gas water tube steam boiler dramatically reduces emissions compared to conventional oil-fired systems. Under equivalent fuel consumption, carbon dioxide emissions are reduced by 53%, while nitrogen oxides and sulfur compounds are cut by more than 90%. These numbers speak to the boiler's compliance with the latest national standards for low-carbon development and clean production.

Beyond environmental benefits, the “oil-to-gas” transition also brings considerable economic gains. By switching to natural gas, the client is projected to save over 6 million RMB annually in fuel procurement costs alone, significantly enhancing the project's financial performance.

The 35 tph gas water tube steam boiler from ZOZEN's SZS series features a full-membrane water-cooled wall structure that ensures excellent sealing and thermal efficiency. Its large furnace chamber and high-efficiency economizer design enable thermal efficiency of up to 100%. Equipped with advanced low-NOx burners, the system maintains nitrogen oxide emissions as low as 30 mg/Nm³, meeting even the strictest environmental standards.

ZOZEN Boiler's production of the SZS series also demonstrates a strong commitment to precision and quality. The company's automated membrane wall production line, controlled by PLC systems, ensures high-quality welds and accurate spacing of water tubes—key factors in maximizing the reliability and performance of the 35 tph gas water tube steam boiler.

With a global presence in countries including the United States, Finland, Indonesia, the Philippines, Thailand, Vietnam, and Uzbekistan, ZOZEN Boiler continues to provide comprehensive technical support, customized solution design, and on-site guidance services. Recognized as a AAA credit-rated enterprise and a billion-yuan annual sales company, ZOZEN is a trusted global partner for clean and efficient industrial boiler solutions.

The successful operation of the 35 tph gas water tube steam boiler at the Guizhou power plant is another testament to ZOZEN Boiler's leadership in energy transformation and green manufacturing. It showcases not only the company's technological strength but also its commitment to driving sustainable development across industries.

For more information or to explore customized clean energy solutions, contact ZOZEN Boiler today.