Good News! Recently, the Shaanxi Chemical Society officially announced the results of the 2026 Shaanxi Petrochemical Science and Technology Award. Yulin Chemical Co., Ltd. of Shaanxi Coal and Chemical Industry Group was awarded the Third Prize for its Waste Heat Boiler Exhaust Steam Cascade Recovery and Utilization Project in Ethylene Glycol Distillation De-alcohol Tower. Recognized for its outstanding technological innovation and remarkable energy-saving results, this project is a shining example of industry collaboration!
It is invested and operated by Wuxi Guolian Green Technology Co., Ltd. under the EMC (Energy Management Contract) model, with core equipment provided by Beijing Huahang Shengsheng Energy Technology Co., Ltd. Through this strong alliance, the three parties have successfully joined forces to create a benchmark case for cascade utilization of waste heat in the coal chemical industry!
The Shaanxi Petrochemical Science and Technology Award is a highly authoritative and influential scientific honor in the province's petrochemical sector. It aims to recognize innovative achievements that deliver technological breakthroughs and generate significant economic and social benefits in fields such as petrochemicals and coal chemicals.
This award-winning project targets common industry pain points in coal-to-ethylene glycol (MEG) plants: high energy consumption in the distillation section and low utilization rates of by-product steam. To solve this, the project innovatively adopts cascade recovery and utilization technology for waste heat boiler exhaust steam. By precisely matching the energy grade of the low-pressure by-product steam from the de-alcohol tower's waste heat boiler, it achieves highly efficient cascade energy utilization.
Here are the core highlights of the project:
★ High Energy Efficiency: The system effectively reduces the consumption of steam and circulating water in the MEG distillation process. It saves approximately 400,000 tons of 0.5MPa low-pressure steam and about 10.1 million cubic meters of circulating water annually, delivering remarkable energy-saving benefits.
★ Carbon Reduction & Increased Efficiency: Turning waste into wealth through the resource recovery of waste heat, this project actively facilitates the green and low-carbon transformation of coal chemical facilities, perfectly aligning with China's "Dual Carbon" strategic goals.
★ Industry Benchmark: It provides a replicable and scalable technical paradigm for waste heat recovery and system optimization in large-scale MEG plants.
As a leading smart energy operation service provider in China, Wuxi Guolian took the lead throughout the project under the EMC (Energy Management Contract) model, overseeing investment, construction, and operations. Leveraging its state-owned enterprise resources and industry integration capabilities, it seamlessly connected technology, equipment, and operational resources to ensure the highly efficient advancement of the entire process. Backed by extensive industry experience and a mature business model, Wuxi Guolian provided crucial guarantees for the project's success.
As a top domestic enterprise in the comprehensive utilization of low-grade residual energy, Huahang Shengsheng was deeply involved in this project. It provided an ultra-high-efficiency variable-frequency double-stage centrifugal steam compression upgrading system and integrated solutions based on aero-turbine technology. Relying on its independently developed core technology transferred from military to civilian applications, Huahang Shengsheng ensured the highly efficient and stable operation of the project.
As the operator of the world's largest coal-to-ethylene glycol (MEG) plant, Yulin Chemical Co., Ltd. of Shaanxi Coal and Chemical Industry Group has always been committed to scientific and technological innovation. Focusing on energy conservation, carbon reduction, and green transformation, the company continuously promotes technical renovation projects such as waste heat and pressure recovery and system optimization, driving high-quality development through technological innovation. (Note: Supervised by the SASAC of Shaanxi Provincial People's Government)
Wuxi Guolian Green Technology has been deeply engaged in the comprehensive energy services sector for many years. As a benchmark enterprise in domestic industrial energy-saving services, it empowers high-energy-consuming industries to save energy and reduce carbon emissions through an integrated "investment + construction + operation" model, successfully implementing multiple national and provincial-level demonstration projects.
Huahang Shengsheng has also been deeply rooted in the comprehensive utilization of industrial waste heat and residual pressure for years. Its core technologies are widely applied in petrochemicals, chemicals, metallurgy, and other industries. The company has implemented several first-of-its-kind demonstration projects in China, leading the technological upgrade of industrial waste heat utilization.
This award is a significant achievement of the synergistic collaboration among Yulin Chemical, Wuxi Guolian, and Huahang Shengsheng. It highlights the deep integration of technology and industry, as well as the empowerment of innovative business models. More importantly, it serves as a vivid practice of the "green and low-carbon, energy-saving and efficiency-enhancing" development philosophy in the coal chemical industry.
Looking ahead, the three parties will continue to deepen their cooperation. With technological innovation at the core, they will focus on critical pain points in energy conservation and carbon reduction within the coal chemical sector. They will continuously explore cutting-edge technologies such as highly efficient waste heat and pressure recovery and cascade energy utilization, contributing more strength to the transformation of China's coal chemical industry toward high-end, diversified, and low-carbon development, and ultimately supporting the realization of the "Dual Carbon" goals!