The outlet of the water ring vacuum pump has a strong odor

Try using a dry vacuum pump; this way, even if there is an odor, it can be easily resolved

The smell is that of benzene entering the system; one can’t blame the pump for this. By reducing the amount of material entering, the smell at the outlet will naturally be less intense! Such as condensers with chilled water at the inlet, etc.

Vacuum bilging is used; the high-speed vacuum exhaust draws in liquid aromatic droplets and foam, which are then carried away by the exhaust flow. If this vacuum exhaust is discharged directly into the atmosphere, the aromatic droplets and foam will be released into the air, contaminating it and posing a carcinogenic risk to human health. Based on my long-term experience in the efficient separation of gas and liquid phases using vane-type devices for demisting and defoaming, it is recommended to install a set of mobile vane-type high-efficiency gas-liquid demisting and defoaming separators at both the inlet and outlet of the vacuum pump. These separators can effectively capture and recover the aromatic liquid droplets present in the vacuum exhaust gas; any remaining trace amounts of gaseous aromatic compounds can then be treated using methods similar to those used for VOCs absorption. For relevant technical information, you can visit http://bbs.hcbbs.com/thread-1634292-1-1.html for more details.

Add an outlet condenser at the pump outlet! Benzene is still easy to recover

It is certainly good to add a condensation device at the vacuum pump outlet. However, after the exhaust gas from the vacuum pump is condensed, there are more in number and larger in mass of tiny liquid droplets suspended in it; these cannot be separated from the exhaust stream through gravity alone. It is necessary to use a baffle-type high-efficiency gas-liquid demister to capture and recover these condensed benzene droplets, thereby further reducing the odor of the exhaust gas.

I don’t understand what a feather-leaf high-efficiency gas-liquid demisting separator is; it must be a name invented by your company! Whether the tiny liquid droplets formed after the exhaust gas is condensed appear in a foamy form depends on the components contained in the gas; as for whether there is more mass of these tiny liquid droplets – I wonder if you’ve heard of gas transportation? The reason why tiny droplets can be carried away is due to the action of gas molecules, and this depends on the flow rate of the gaseous medium. Indeed, even so, smaller droplets may not be able to be separated effectively, and in such cases specialized separation designs are required. As far as I know, at present the best method for separating gaseous media containing tiny droplets (or foam) remains centrifugal (cyclone) separation, rather than any type of separator defined by fins or feathers!

It seems that your understanding of dynamic separation techniques remains limited to a few pages in university textbooks. Cyclone separation is just a small category within centrifugal separation technologies. The feather-leaf gas-liquid separation technology integrates methods such as momentum separation, centrifugal separation, coalescence separation, and liquid surface free energy capture separation. My professional competence and work experience have given me a thorough understanding of pneumatic conveying. I have been involved in the promotion of efficient kinetic separation technologies and the design of related equipment, both domestically and internationally, for over 20 years. My bachelor’s degree was in Polymer Chemistry Engineering and Technology, while my master’s degree was in Chemical Engineering. I am confident in my understanding of the various ways in which liquid droplets can be entrained in gas streams, as well as of the size distribution of these droplets across different gas-liquid entrainment mechanisms. I am familiar with internationally recognized precise calculation and design models for gas-liquid separation, including the Stokes, Allen, and Newton models. I also understand the quantitative impact of various parameters such as temperature, pressure, gas phase compression, gas flow velocity, gas composition, gas viscosity, gas density, droplet density, droplet viscosity, and droplet surface tension on gas-liquid separation under different operating conditions. The process packages of Shell, Dow, SD, Davy, Topsoe, Lurgie, Linde, Casale, UOP, and Lummus involve process calculations such as vane gas-liquid separation and multi-factor cyclone mother-son separation, as well as separator design; they have repeatedly contacted me to develop technical solutions. The reflective flow multi-factor cyclone parent-child separator also belongs to the category of centrifugal separators, but its gas-solid (liquid) separation efficiency and stability are significantly improved compared to traditional cyclone separators. As for gas-liquid separation, the feather vane gas-liquid demisting separation technology outperforms the reflective flow multi-factor cyclone mother-son separator in terms of operational flexibility, operating pressure drop, and cost-effectiveness. For the ammonia synthesis industry under pressure conditions of 20 MPaG to 40 MPaG, an axial-flow multi-factor cyclone mother-son separator is required, rather than a counterflow multi-factor cyclone mother-son separator. You can consult experienced professional peers at home and abroad before discussing it further.

This post was last edited by symc on 2016-11-1 20:06. Well, I truly believe you have a brilliant academic reputation… and a high level of education! Those who also specialize in studying this area are all very convinced of it! I’m just an amateur, but one thing is clear to me: when it comes to the application of techniques, no matter how sophisticated they may seem or sound, it doesn’t matter; only the most suitable option is the best one. There is no equipment that can be used in all possible situations……

The equipment for dynamic separation technology is not standard; rather, technical solutions must be designed on a customized basis, case by case, on a system platform that enables precise calculations based on the operating conditions. There are no exactly identical operating conditions, nor are there exactly the same dynamically efficient separators. You can visit our official website at www.novelenergytech.com to see if there are identical separation devices among our many achievements.