Internationally advanced cyclone separation technology

Go to Finland to check out the centrifuges; they’re expensive and not necessarily available for purchase

It is recommended to visit the HaiChuan Chemical Forum directly at the link http://bbs.hcbbs.com/thread-1354813-1-1.html to learn more about advanced international precision cyclone separation technologies and equipment. For detailed information, please contact professional cyclone separation technology companies directly for collaboration.

As far as I know, the separation precision achievable with existing cyclone separation technologies is over 95% for particles of 10um size. Regarding the coal powder separation you mentioned, what is the volume flow rate of gas in your system? What is the required separation precision? The design and manufacturing of cyclone separators abroad are significantly more expensive than those in domestic markets.

Currently, there are indeed many domestic companies that design and manufacture cyclone separators. However, the internal structure and the configuration of the internal components in multi-factor cyclone separators used abroad are fundamentally different from those of cyclone separators used in China. Cyclone separators also fall under the category of swirl separators. Under the same operating conditions, the larger the rotational diameter of the fluid in the separator, the smaller its rotational angular velocity ； The separation efficiency is proportional to the angular velocity of the fluid rotation. The fluid rotation diameter of domestic cyclone separators is generally several meters, whereas that of multi-factor cyclone parent-child separators does not exceed 4 inches; their separation efficiencies are not on the same level. Furthermore, domestic companies lack accurate dynamic calculation and design system platforms when designing cyclone separators; many parameters are determined through empirical estimation or by referring to traditional charts, making it difficult to accurately determine the behavior of rotating fluids and their related parameters under different operating conditions. This often results in the swirl separators designed by domestic companies having actual separation performance that deviates significantly from the calculated values.

First of all, I fully agree with your view; indeed, some domestic companies’ designs for cyclone equipment deviate significantly from their actual application. My understanding is that the cyclone separator (referred to as the large cyclone) and the multi-factor swirl parent-child separator (should I call it a multi-tube small cyclone?) ) there are still significant differences. First, the computational efficiency of large cyclones is generally not as high as that of multi-tube cyclones, which is easy to understand ； Second, the pressure drop of multi-tube cyclones should be higher than that of large cyclones handling the same gas volume ； Third, multi-tube cyclones are more prone to clogging, and when one of them gets blocked, it affects the overall efficiency; moreover, they are difficult to maintain and clean. This is why large cyclones are now commonly used in place of multi-tube cyclones in various industries. I hope to exchange ideas and get feedback; thank you!

This post was last edited by luoli519 on 2021-11-6 at 19:10. Hello! It is recommended that you refer to the \"large cyclone\" as a traditional standard cyclone separator, and replace the \"multi-tube small cyclone\" with a multi-factor cyclonic parent-child separator; using professional terms can help avoid literal misunderstandings regarding these two types of separators as merely being different in size and quantity. In fact, the multi-factor cyclone parent-child separator features a symmetric double-tangent inlet flow channel for the fluid inlet to the cyclones, which gives it fundamental differences from traditional cyclone separators in terms of fluid element distribution and the stability of the swirling velocity in the initial stage. Secondly, the multi-factor cyclone parent-child separator has a relatively complex set of fluid dynamics components inside, whereas a standard cyclone separator has no such components and is essentially just a hollow shell. In fluid dynamic separators, if the dynamic parameters and operating model are not sufficiently steady-state, the efficiency of the separator is not stable or reliable. Regarding the operating pressure drop of multi-factor swirl parent-separator and standard cyclone separators, it mainly depends on the square of the velocity when the fluid is introduced into a rotating state. Due to the design and calculation system platform of the multi-factor cyclone parent-child separator, which differs significantly from traditional cyclone separators, there is a large difference in the allowable upper limit for the speed at which fluid is introduced into a cyclonic state, and the actual operating pressure drops vary. Under the same operating conditions, the operating pressure drop of multi-factor swirl separator mother-son separators is not necessarily higher than that of conventional cyclone separators; in fact, it can even be much lower ； However, this comes at the cost of a more complex internal configuration and higher costs. Therefore, in actual design work, it is the responsibility of professional companies specializing in dynamic separation technologies to design multi-factor cyclone mother-son separators that offer high separation efficiency, stability, and reliability, while also having the lowest possible cost, all while meeting the technical requirements regarding pressure drops during operation. Regarding the clogging problems of certain common types of cyclone separators, this has also been the issue that has received the most attention and discussion over time. Both traditional cyclone separators and RF-type multi-factor cyclone parent-separator units belong to the reflective flow type of cyclone separators. When the light-phase fluid reaches the bottom reflector cone, its flow direction and rotation direction reverse, creating a \"typhoon effect\"; this results in \"negative pressure\" that hinders the drainage of the liquid material and causes solid particles to form bridges that block the flow. For the reflective-flow type cyclone separator, it is necessary to further modify the flow channel in order to minimize the impact of the \"typhoon effect\" on the discharge. The AX-type multi-factor cyclone mother-son separator belongs to the axial-flow cyclone separation type; it can effectively prevent discharge problems, making it an excellent choice especially for applications involving the removal of viscous mixtures such as asphalt and dust that tend to cause scaling, in high-temperature pyrolysis gases. For extremely special operating conditions, professional dynamics separation technology companies design the internal components of multi-factor cyclone mother-son separators as a detachable structure, which not only ensures the overall operational efficiency of the separator but also addresses the issues related to maintenance and cleaning. For information on various dynamically efficient separation technologies and equipment such as the G54 multi-factor cyclone mother-son separator, as well as for separations of gas-liquid, gas-solid, gas-liquid-solid, liquid-liquid, and gas-liquid-liquid-solid types, please visit the HaiChuan Chemical Forum using the direct link provided. For more technical details, please contact a professional dynamics separation technology company.