April 20, 2026, China —— Recently, three sets of 500m³/h capacity 2-in-1 Eco-friendly Water Jet Vacuum Unit, specifically customized for Flue Gas Desulfurization (FGD) systems in thermal power plants, successfully passed factory acceptance testing and were officially shipped. These units are destined for an ultra-low emission renovation project at a large domestic coal-fired power plant, aiming to enhance the operational stability of the gypsum vacuum belt dehydration system while achieving energy-saving, environmental protection, and intelligent collaborative control.

The delivered units feature a full PPH (Modified Polypropylene) anti-corrosion structure. This integrated "2-in-1" compact design incorporates the water jet pump, circulating water tank, cooling coil, gas-liquid separator, and anti-corrosion centrifugal pump. This setup not only significantly saves installation space but also achieves high-efficiency water resource utilization through a closed-loop circulation system, perfectly aligning with the current green and low-carbon transformation trends in the power industry.

Customized for FGD Conditions: Solving Traditional Pain Points

In the wet desulfurization process of thermal power plants, the vacuum belt dehydrator relies on a stable negative pressure environment to achieve solid-liquid separation of gypsum slurry. Traditional water ring vacuum pumps are often susceptible to slurry corrosion and scaling, leading to large vacuum fluctuations, high energy consumption, and frequent maintenance. The 500m³/h 2-in-1 unit overcomes these challenges through several technical advantages:

• Superior Corrosion Resistance: All flow-passing components are made of PPH material, capable of withstanding acid and alkali corrosive gases and liquids (pH 1-14), ideal for high-chloride and high-sulfur environments.
• Stable Suction Performance: With a single unit capacity of 500m³/h and an ultimate vacuum of ≤0.099MPa, it ensures uniform force on the filter cloth, improving the precision of gypsum moisture content control.
• Energy Efficiency: Compared to traditional water ring pumps, power consumption is reduced by approximately 40%. The closed-circuit water circulation eliminates wastewater discharge.
• Integrated Design: The 2-in-1 structure simplifies on-site installation and piping connections, shortening the commissioning cycle and enhancing overall system reliability.

Technical Specifications

Intelligent Upgrades Meeting Latest Industry Standards

With the official implementation of the "Technical Specification for Intelligent Safety Production Management and Control Systems in Thermal Power Plants" (DL/T 2961—2025) in March 2026, power plants have higher requirements for the intelligence of auxiliary equipment. This PPH anti-corrosion vacuum pump system is equipped with an intelligent control cabinet that supports:

While gas-cooled Roots liquid ring units perform excellently in condenser vacuum systems, the 2-in-1 eco-friendly water jet vacuum system has become an irreplaceable mainstream choice for highly corrosive scenarios such as desulfurization, ash removal, and wastewater treatment due to its exceptional chemical resistance.

Driving Green Transformation in Power Generation

The successful delivery of these three 500m³/h units marks the further maturity of water jet technology in large-scale power plant applications. It not only solves the industry pain points of "easy corrosion, high water consumption, and difficult maintenance" but also responds to the national "Double Carbon" strategy with modular, intelligent, and low-emission advantages.

As more power plants initiate ultra-low emission and smart transformations, this technology will play a pivotal role in flue gas treatment, wastewater management, and chemical water treatment, serving as a vital technical pillar for the green upgrade of the thermal power industry.