In melt crystallization, the disparity in results is often striking. Some materials achieve significant purity leaps after a single stage, while others show virtually no differentiation in assay levels between the product, mother liquor, and sweating liquor, even after completing…
Melt crystallization is not a universal solution for all chemical systems. While some materials exhibit significant purity gains after a single stage—with further improvements in subsequent stages—others may crystallize without effective mother liquor discharge or noticeable sweating, resulting in stagnant…
In lab-scale trials of melt crystallization, our primary objective is not achieving peak purity initially, but rather determining the technical viability of the material for further process development. When clients inquire whether a specific substance can be purified via melt…
Industry Challenge – Why Conventional Processes Are Expensive and Inefficient For decades, chemical production has followed a sequential “reaction first, separation later” configuration. Reactors complete conversion, while distillation columns handle purification. The result is a long process route with high…
Preface: Why “Catalyst Packing” Becomes the Make-or-Break Factor for Reactive Distillation Reactive distillation (RD) and catalytic distillation (CD) are representative process intensification technologies that synergistically integrate reaction and separation within a single column. On one hand, timely removal of products/by-products…
In typical reactions such as etherification, esterification, and hydrogenation, traditional processes usually face three common bottlenecks: (1) Due to balance constraints, the conversion rate cannot be further increased; (2) Strong heat release leads to hotspots and side reactions; (3) The…
On May 21, the 10th International Conference on Olefins and Polyolefins was successfully held in Ningbo. The conference brought together technical representatives from leading domestic and international organizations, including Wanhua Chemical, LyondellBasell, and Norner of Norway. Conference site DODGEN was…
DODGEN and Yuneng New Materials Sign Agreement for the Devolatilizer System for the Polyolefin Elastomer Unit of the Epoxy Resin Integrated Project (Phase I) On May 21, 2026, the signing ceremony for the Devolatilizer System of the 100,000 t/a Polyolefin…
Surging Demand for High-Purity Chemicals Is Pushing Conventional Separation Technologies to Their Limits Chemical separation is often described as the “invisible heart” of the chemical industry. A less recognized fact is that separation processes account for approximately 40%–70% of the…
An Invisible Problem Inside Everyday Plastics The plastic baby bottle used for infant formula, the cling film wrapped around a sandwich, and even the interior trim responsible for the “new car smell” may all contain trace amounts of unreacted raw…