Ningxia Tianyuan Power Plant | 3280m High-Head Feed Pumps & FGD Slurry Solutions - Kaiquan

Shanghai Kaiquan Pump engineered and delivered an advanced, integrated fluid handling solution for Ningxia Tianyuan Power Plant- 2×350MW supercritical coal-fired indirect. Designed for an annual utilization time of 7,500 hours, an annual power generation of 4.76 billion kWh, and an annual steam supply of 2.052 million tons, the facility demands exceptional reliability across its high-pressure thermal cycle and environmental desulfurization operations.

Key Operational Challenges

Operating a 350MW supercritical power generation unit continuously under full load introduces critical fluid handling requirements:

Extreme Thermal & Hydraulic Strain: Delivering boiler feed water at 178 °C with a 3,280m head and a high speed of 5,626 r/min demands severe thermal-structural stability, zero shaft vibration, and robust pressure containment.

Aggressive Slurry Corrosion & Abrasion: Contracted by Aerospace Environmental, the flue gas desulfurization (FGD) circuit requires 24/7 circulation of abrasive limestone-gypsum slurries without leakage, cavitation, or rapid impeller erosion.

Customized Kaiquan Engineering Solutions

Full-Capacity Double-Casing Boiler Feed Pump Packages

Inner/Outer Barrel Split Structure: Main feed pumps utilize a double-casing sectional cartridge design with separate inner and outer barrels to minimize thermal deformation and withstand extreme working pressures. The full pull-out cartridge structure allows rapid maintenance and reduces downtime.

Integrated Drive Configuration: Driven by a classical high-efficiency combination of a booster pump, gearbox, steam turbine, and steam-driven main feed pump.

Comprehensive Condition Monitoring: Equipped with minimum flow protection valves, precision suction strainers, and real-time sensors tracking temperature, pressure, vibration, and bearing conditions.

Advanced FGD Slurry & Desulfurization Pumping Systems

KQTL Main FGD Recirculation Pumps (8 Units): Engineered specifically for wet FGD limestone and gypsum slurry transfer, featuring broad flow ranges, high efficiency, and low energy consumption.

KDTX Auxiliary FGD Pumps (18 Units): Compact single-casing design tailored for auxiliary desulfurization duties, utilizing specialized wear- and corrosion-resistant metal alloys.

CFD Flow Optimization: Computational Fluid Dynamics (CFD) simulations were utilized to optimize internal hydraulic passages, reducing turbulence, lowering power loss, and extending component lifespan.

Proven Impact & Performance Highlights

The steam-driven feed pump packages have maintained synchronized, fault-free operation with the 350MW supercritical turbines since 2019, recording zero major forced outages.

Ultra-Low Emission Compliance: The 26 desulfurization pumps maintain stable flue gas purification, supporting the plant’s zero-emission environmental goals and sustainable regional heating supply.