Against the backdrop of accelerated green, low-carbon, and large-scale continuous production transformation in the chemical industry, sub-sectors including fine chemicals, coal chemical industry, new materials, and solvent recovery have raised higher requirements for vacuum systems. Conventional water ring pumps and oil-sealed vacuum pumps are plagued by low pumping speed, medium contamination by oil, frequent breakdowns under highly corrosive conditions, and high costs for wastewater and waste oil disposal, which restrict production line capacity, product purity, and workplace safety.

Amid growing demand for replacement of existing equipment and construction of new centralized vacuum stations, the Xiamen Taixing TXGB500 duplex stainless steel high-speed oil-free screw vacuum pump has become the preferred model for high-corrosion and high-flow chemical processes. It boasts four core advantages: an ultra-large flow rate of 1,800 m³/h, full wetted duplex stainless steel anti-corrosion structure, completely oil-free clean operation, and stable long-cycle performance. It has been widely deployed on major chemical production lines, delivering mature 高度定制的 vacuum solutions to help the industry boost output, cut costs, and improve safety.

I. Four Major Pain Points of Vacuum Equipment in the Chemical Industry

• Insufficient pumping speed: For 10,000-ton chemical production lines, traditional pumps deliver low gas displacement, resulting in slow vacuum build-up and severe negative pressure fluctuations, prolonging process cycles.
• Oil contamination risks: Oil mist can flow backward and contaminate high-purity intermediates. Contact between oil-gas mixtures and flammable media creates explosion hazards.
• Material corrosion: Standard cast iron or 316L stainless steel pumps suffer pitting and deformation when exposed to chloride ions and strong acids, leading to frequent shutdowns.
• High O&M costs: Regular lubricant replacement and wastewater treatment involve heavy manual inspection, making traditional units unsuitable for 24-hour unattended operation.

II. Core Performance Parameters of TXGB500

The TXGB500 is a flagship large-displacement dry screw pump. At 50 Hz, it achieves a pumping speed of 500 L/s and a flow rate of 1,800 m³/h with an ultimate vacuum of 50 Pa, balancing high gas throughput and stable medium-to-high vacuum.

III. Four Core Advantages for Harsh Chemical Production

1. Ultra-high pumping speed for centralized vacuum

Optimized large-volume variable-pitch screw profiles deliver an instantaneous pumping speed of 500 L/s, rapidly removing water vapor and solvent vapor. A single TXGB500 can supply negative pressure for multiple production lines simultaneously, supporting the construction of park-level centralized vacuum stations.

2. Fully oil-free dry design for clean production

The entire unit operates with a purely dry oil-free structure; no lubricating oil enters the pump cavity. This fundamentally eliminates risks of oil mist backflow. Sensitive materials such as high-purity reagents and pharmaceutical intermediates avoid contamination, significantly cutting scrap losses.

3. Full duplex stainless steel wetted components

Core rotors and pump body wetted substrates are integrally fabricated from premium duplex stainless steel. Compared with ordinary 316L, it delivers vastly superior resistance to chloride ions, sulfides, and acidic water vapor. The overall service life is extended by 3–5 years relative to conventional anti-corrosion vacuum equipment.

4. Industrial-grade long-life configuration

Equipped with dedicated nitrogen purging, cavity water cooling, and automatic post-shutdown solvent cleaning systems to remove residual crystals. Long-life grease lubrication greatly extends maintenance intervals, resulting in substantially lower overall maintenance costs.

IV. Full-Industry Application Scenarios

V. Product Market Value

By integrating advanced vacuum technology, the TXGB500 provides a comprehensive upgrade for chemical plants. It enhances capacity by shortening process cycles, ensures quality by eliminating oil contamination, and improves durability through its duplex stainless steel construction. Furthermore, it meets the strictest environmental supervision standards by generating zero waste oil and wastewater.

Industry trends indicate that chemical vacuum equipment is continuously evolving toward dry oil-free design and customized anti-corrosion construction. Taking the TXGB500 as a mature benchmark product, Xiamen Taixing continues to drive the green, large-scale, and intelligent transformation of the modern chemical sector.