Dehydration process for the raw material mixture used in VCM production via the calcium carbide method

Here, we use two-stage cooling with 7°C water and -35°C ice-brine, along with a glass wool mist eliminator for mist removal. The effect is still pretty good

Dehydration can be achieved using the temperature swing adsorption process (TSA). This is used in situations where very low moisture levels are required, allowing the moisture content to be reduced to below 20PPM

Dehydration can be achieved using the temperature swing adsorption process (TSA). This is used in situations where very low moisture levels are required, allowing the moisture content to be reduced to below 20PPM

Are there any information on pressure swing adsorption, real-world cases, and related materials? I asked a manufacturer, and they said their pressure swing adsorption technology is designed for acetylene gas; for hydrogen chloride gas, the freezing method is still used to remove water

It’s temperature-dependent adsorption. It absorbs water at room temperature, and the adsorbent is regenerated after heating. One tower for adsorption, one tower for heating, one tower for cooling – a cycle of three towers. The application performance is mainly seen in the deep dehydration process of hydrogen chloride as a raw material in silicon trichloride plants and polysilicon plants.

Is there any relevant information that you could share?

Glass wool foam and mist remover belongs to the broader category of fiber-based foam and mist removers. For such mist eliminators, it is necessary to select the appropriate thickness and bulk density of the glass wool fibers; otherwise, the efficiency of foam and mist removal will be reduced, the smoothness of liquid discharge will be affected, and the operating pressure drop will increase significantly. What are the parameters of the glass wool fibers used in your glass wool demister and mist eliminator, and what are the operating pressure drop and the efficiency of liquid discharge? Is there still room for improvement? In addition to fiber-blocking type demisting and defoaming separators, there are also fan-leaf type high-efficiency gas-liquid demisting and defoaming separation technologies, as well as multi-factor swirl parent-child separation technologies and equipment available for selection. For more technical information, please visit the link http://bbs.hcbbs.com/thread-1354813-1-1.html on the Haichuan Chemicals Forum. For detailed technical solutions, please contact a professional company specializing in dynamics separation technology.

The feather-leaf type high-efficiency gas-liquid demisting and separation technology still falls under the category of blade separators. What level of precision can it achieve? What is its separation efficiency at 3 microns, and what about at 1 micron? Regarding the issue of choosing a fiber bed you mentioned, can’t professional manufacturers take that into account? For example, the fiber bed in MECS – don’t they have a specialty in that area? Whether you choose a fiber bed or your vane-type demister, the decision must be made after taking into account the process requirements and operating conditions; it’s not something that can be used just because it is considered suitable.