April 20, 2026, China —— Recently, three sets of 500m³/h 2-in-1 eco-friendly water jet vacuum units, specifically customized for thermal power plant Flue Gas Desulfurization (FGD) systems, successfully passed factory acceptance and were officially shipped. These units will serve an ultra-low emission transformation project of a large domestic coal-fired power plant, aiming to enhance the operational stability of the desulfurization vacuum belt dehydrator system while achieving energy saving, environmental protection, and intelligent collaborative control.

Figure 1: Integrated Energy-saving Design of the 2-in-1 Eco-friendly Water Jet Vacuum Unit

Customized for Desulfurization: Solving Industry 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.

Our latest Water Jet Vacuum Unit effectively overcomes these challenges through its unique technical advantages:

• Superior Corrosion Resistance: The entire flow-passing components are made of PPH (Modified Polypropylene) material, which can withstand acidic and alkaline corrosive gases and liquids with a pH range of 1-14. This makes it ideal for the high-chlorine and high-sulfur environments found in desulfurization systems.
• Stable Suction Performance: With a single unit capacity of 500m³/h and a limit vacuum degree of ≤0.099MPa, the unit ensures uniform force on the filter cloth of the belt machine, improving the precision of gypsum moisture content control.
• Energy Saving and Environmental Protection: Compared to traditional water ring pumps, the power consumption is reduced by approximately 40%. The closed-loop water circulation system eliminates wastewater discharge, significantly reducing environmental impact.
• Integrated "2-in-1" Design: This compact integrated vacuum unit combines the water jet pump, circulating water tank, cooling coil, gas-liquid separator, and anti-corrosion centrifugal pump into one system, saving installation space and shortening commissioning cycles.

Technical Parameters

Intelligent Upgrades for Modern Power Standards

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

• Remote start/stop and automatic vacuum degree adjustment.
• Real-time monitoring of operating parameters (pressure, flow, temperature).
• Fault self-diagnosis and alarm uploading to the DCS system.
• Energy efficiency analysis and historical data storage.

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

Figure 2: Integrated 2-in-1 Water Jet Vacuum System for Chemical & Environmental Industry

Driving Green Transformation in the Power Industry

The successful delivery of these three 500m³/h units marks the further maturity of the 2-in-1 eco-friendly vacuum system in large-scale thermal 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 "Dual Carbon" strategy with its modular, intelligent, and low-emission advantages.

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