NEWS

A wiped film evaporator (WFE), also called a thin film evaporator, is a type of distillation apparatus that creates a thin, rotating film of liquid on a heated surface to rapidly evaporate volatile components from a mixture, even with heat-sensitive, viscous, or fouling products.

Application of Filtering, Washing, and Drying Integrated Equipment in the Production of Fluorinated Polyimide Materials for Flexible Screens

The cross-application of API equipment and petrochemical production is primarily reflected in new materials, automated control, energy-saving technologies, and intelligent production. The following is an analysis of these cross-applications in several key areas.

In 2023, Zhanghua Pharm & Chem Equipment proudly received the Gold Medal at the International Exhibition of Inventions Geneva, one of the world’s most prestigious innovation events. Our award-winning project, “Micro-Indentation Depth Detection Technology – Mobile Mechanical Testing Laboratory,” was jointly developed with China University of Petroleum (East China) and demonstrates a significant breakthrough in indentation-based mechanical property and residual stress testing.

Semiconductor manufacturing demands high material purity, stable process control, and reliable contamination prevention. As device geometries continue shrinking and performance requirements increase, post-treatment of semiconductor powders and precursor intermediates has become a critical step in ensuring final material quality. Solid–liquid separation, impurity removal, and consistent drying are not only conventional downstream operations, but rather essential contributors to electrical performance, defect rate reduction, and long-term reliability.

The Agitated Nutsche Filter Dryer (ANFD), also known as the filter–wash–dry system, is widely recognized as a multifunctional closed solution for handling high-purity powders and reactive materials. Wuxi Zhanghua’s integrated Filter–Wash–Dry System enables filtration, displacement washing, agitation, and vacuum drying to occur seamlessly inside a single, sealed chamber. By minimizing powder exposure to air, moisture, and potential sources of contamination, the equipment design aligns closely with the stringent expectations in electronic chemicals and semiconductor material processing.

The Filter-Wash-Dry (FWD) integrated equipment, commonly known as the Agitated Nutsche Filter Dryer (ANFD) or Filter-Wash-Dry System, is a highly integrated advanced unit operation equipment. This system can continuously complete three critical processes—filtration, washing and drying—in a single closed vessel, eliminating the need for material transfer throughout the entire production process.



Founded in 1976, Wuxi Zhanghua Pharm& Chem Equipment Co., Ltd. has been deeply engaged in the field of core equipment for pharmaceutical and fine chemical industries. It has accumulated extensive engineering experience in structural design, material selection, closed safety assurance and process scale-up verification of the filter-wash-dry integrated system.



This integrated process design is particularly suitable for production scenarios with stringent requirements for product purity, personnel safety, environmental control and regulatory compliance. It has now become one of the key core equipment in modern pharmaceutical and high-end material manufacturing sectors.

The revised national standard GB/T 30583—2026 “Post-Weld Heat Treatment of Pressure Equipment” has been officially released. In this revision, the Indentation Energy Difference Method has been incorporated into Appendix G and listed as an optional method for evaluating post-weld heat treatment effectiveness. Its inclusion signifies that residual stress testing based on instrumented indentation technology has formally entered China’s national standard framework.

Discover the benefits of vacuum drying machines for efficient and precise drying across various industries. Improve product quality and reduce processing times.