Huaneng Gansu Company Zhengning 2x1000MW Peaking Coal-fired Power Project

Huaneng Gansu Company Zhengning 2x1000MW Peaking Coal-fired Power Project

Project Owner

Huaneng Group

Project Location

Zhengning County, Qingyang City, Gansu Province

Core Equipment

DN4500*20,000 Fiberglass Concentrators (Towers 1# and 2#)

Services

Equipment design, manufacturing, transportation, installation, and commissioning

Contractor

Hebei Weitong Fiberglass Co., Ltd.

Project Overview

Huaneng Zhengning Power Plant is a key power source in the Longdong Energy Base, and its environmental protection facilities are constructed to high standards and stringent requirements. This desulfurization wastewater zero discharge project aims to achieve the environmental goal of no wastewater discharge from the power plant, placing extreme demands on the reliability and stability of the core equipment. Hebei Weitong Fiberglass Co., Ltd., leveraging its extensive track record and strong reputation in the power industry, successfully undertook the construction of the project's key equipment, the No. 2 Concentrator. This marks another milestone in Weitong's commitment to environmental protection at this important national energy base.

Core Challenges And Technical Requirements

This project, located in northwest China and a core environmental protection project for a large power plant, presents unique challenges:

High Environmental Adaptability Requirements

Gansu Province experiences significant day-night temperature swings and frequent sandstorms, requiring equipment materials to be not only corrosion-resistant but also resistant to UV aging and thermal expansion and contraction.

Large-Scale Equipment And Stability

The tower, with a diameter of 4.5 meters and a height of 20 meters, is a large piece of equipment. Its weight and the weight of the liquid are significant when fully liquidized, placing severe demands on the tower's structural design, foundation connections, and overall rigidity.

Extremely High Reliability Requirements

As the first and second towers in a series of projects, their operational stability is directly related to the long-term, safe, and economical operation of the power plant at full load, requiring zero failures and a long lifespan.

Strict Deadlines and Quality Requirements

The tight construction schedule for the power plant project requires on-time or even ahead-of-time delivery of equipment, with impeccable quality the first time, eliminating any defects. 

Hebei Weitong Solution

To meet the unique needs of the Zhengning project, Hebei Weitong developed a specialized technical solution:

Dual Guarantee of Weather and Corrosion Resistance

The inner lining layer utilizes bisphenol A vinyl ester resin, which offers top-tier resistance to high temperatures and mixed chemical corrosion, effectively resisting the attack of chloride ions and sulfates in desulfurization wastewater.


An anti-UV absorber is added to the structural resin, and a special weather-resistant gel coat is applied to the exterior surface, providing dual protection against the intense UV radiation and wind-driven sand erosion in the northwest region, preventing resin yellowing and performance degradation.

Reinforced Structural Design

Computer winding simulation technology was used to analyze the tower's loads. Based on the standard design, localized thickening and reinforcement were implemented in stress-concentrated areas such as the tower skirt, open pipe area, and tower top, ensuring absolute safety under wind, seismic, and operational loads.


The winding lines and angles ensure high axial strength while maintaining excellent hoop stiffness and deformation resistance.

Lean Manufacturing and Process Control

We strictly adhere to relevant Huaneng Group and national standards, establishing internal quality control points that exceed industry standards.


Fully digitally manage the entire process, monitoring and recording key process parameters such as winding time, tension, and temperature in real time. This ensures production traceability and guarantees that Tower 2 products are of the same superior quality as Tower 1.

Efficient Logistics and On-site Organization

For long-distance transportation, we designed specialized, stable transport brackets to ensure the safe arrival of equipment sections at the Northwest project site.


We dispatched a highly skilled installation team, working closely with the general contractor to overcome difficulties such as cross-site operations. They completed the hoisting, assembly, and installation tasks efficiently and with high quality, ensuring the overall project schedule.

Project Achievements And Value

Successful Delivery and Commissioning

DN4500 concentrator towers 1 and 2 have been successfully installed and put into operation. The equipment is operating smoothly, with excellent performance across all parameters, fully meeting design requirements and providing reliable support for Zhengning Power Plant's zero wastewater discharge.

Demonstrating Brand Strength

This project is another benchmark for Hebei Weitong in Northwest China, further demonstrating the adaptability of Weitong's products to diverse, complex, and demanding environmental conditions, and solidifying the company's leading position in the high-end composite materials market for the power industry.

Deepening Strategic Cooperation

This successful collaboration with Huaneng Group demonstrates the large energy group's full confidence in Hebei Weitong's technical strength, product quality, and contract fulfillment capabilities, laying a solid foundation for future collaboration.

Social and Environmental Benefits

The successful implementation of the project significantly reduced the power plant's water consumption and pollution risks, protected the ecological environment of the Yellow River Basin, and provided green support for the national "West-to-East Power Transmission" strategy and the green development of the revolutionary base areas in eastern Gansu, resulting in significant social benefits.

We look forward toworking with you.

Feel free to reach out for any queries. We would be happy to help!

Hebei Weitong FRP Co., Ltd

Contact Us

Contact Us

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E-mail: hbwtww@weitongfrp.com

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