The path to the development of corrugated fillers
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This post was last edited by Real Madrid on 2016-8-16 at 17:15. Source: www.bowentianliao.com/zhishi/jishu/315.html. Since the introduction of Stedman metal mesh corrugated packing in 1937, other types of packing such as Pana-Pak, Goodie, Spraypak, Glitsch Grid, Perform Grid, Hyperfil, Neo-Kloss, Diamond Grid, Expanded Metal, and Sulzer packing have been developed. After the 1970s, impulse packing, Mellapak, Gempak, Kerapak – plastic mesh corrugated packings – Montz-Pak, as well as Rombopak, Pyrapak, Ralupak, and Kon-Tane Packing (a type of plastic woven corrugated packing) were also created. In terms of structure and form, some focus on the rational arrangement of gas-liquid flow channels to ensure as uniform a distribution of the fluid as possible ； Some focus on increasing the gas-liquid contact area; some mainly aim to reduce flow resistance, while others are designed to meet the requirements of technical upgrades and to lower costs. In summary, the development of corrugated packing focuses on enhancing membrane and spray mass transfer, reducing resistance, and promoting uniform distribution of the two-phase fluid, thereby endowing the corrugated packing with the characteristics of high efficiency, low resistance, high throughput, and ease of scaling up. Wavy packing has been widely used in many industries such as the chemical and petrochemical sectors. As early as the 1950s, Grich grid packing was employed in the oil refining industry; today, the improved EF-25AP grid packing is used for heavy oil separation, offering three times higher efficiency than older types of packing, with a maximum diameter of over 12 meters. Wavy packing is the most important series of wavy packings in the world today; it has been used in over 4,000 towers, with a maximum diameter of 14 meters. Currently, 40% of the world’s styrene production is separated using corrugated packed towers. The main companies currently developing corrugated packing abroad include Sulzer in Switzerland and KfJhni; as well as Grich in the United States, Norton, and Koch ； Nutter Company ； Sumitomo Corporation of Japan, Nippon Koei Corporation, Tsukishima Machinery Company, Eiwa Kinmatsu Company ； Companies such as Montz and Raschig from Germany, as well as those from the former Soviet Union, etc. In China, institutions including the Shanghai Research Institute of Chemical Industry under the Ministry of Chemical Industry, Tianjin University, Zhejiang University of Technology, Shanghai University of Engineering Science, the Sixth Design Institute of the Ministry of Chemical Industry, Shanghai Fragrance Research Institute, Shanghai Institute of Pharmaceutical Industry, Lanzhou Petroleum Machinery Research Institute, the Equipment Research Institute of Luoyang Petrochemical Engineering Company, Tsinghua University, Xi’an Jiaotong University, South China University of Technology, and Guangxi University have all carried out research on and applied structured packing. It is estimated that tens of thousands of such towers have been installed nationwide, with a maximum diameter of 6.8 meters; they have achieved significant results in replacing some plate towers and older packing types as part of technical upgrades.
We’re using very ordinary packing, which is not durable at all
The development of packing materials has reached a bottleneck; the packing solutions offered by various companies are quite similar to one another. Once one company files a patent, another company will surely develop a similar product as an imitation. To take an example of a patented product, Sulzer’s Mellapak Plus – Greechi also has a similar product called HC-Plus. Tiantai offers pulse-type packing materials, while Huali has hyperbolic-shaped packing materials. It’s truly a competitive landscape with many players involved
However, user feedback shows that those who require high temperature control still prefer Sulzer products, as there is still a performance gap with domestic alternatives
Today, the chief engineer from Lassi Company is still here at our company, Dr. Mack
Communicate well to accumulate more experience for our **tower packing. :handshake
The basic research on fillers is more or less complete. We have already developed his patented products to a high level of maturity; all he could say was \"surprise\"
I learned that a company in Shanghai is now able to produce packing products with the same quality and efficiency as those produced by Sulzer. It can also design various distillation columns and absorption towers, and its technical capabilities even surpass those of Sulzer; the company’s name seems to be Ke Fu Kai.
All I can say is haha. In fact, the packing materials produced by domestic manufacturers are quite average; Sulzer makes good-quality products, but they’re too expensive. Later on, we started using packing materials from Kefukai. It is said that the people working there used to work for Sulzer, and their technical support is quite timely. They are our company’s best supplier; we even gave them a certificate of appreciation last time