What is the difference between a water collector and a demister screen?
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Can a water collector be used in place of a demister screen inside the tower? What is the basis for the design of both? What are the differences between pressure drop, liquid retention efficiency, and self-weight?
Is the exact name \"water collector\"? Haven’t heard of it! ! In what device is it used? For tower (vessel) type equipment, a foam catcher (remover) is generally installed at the top; the most common type is a wire mesh foam remover. In recent years, more efficient foam removers have been developed (such as baffle types). Such foam catchers are usually equipped with liquid guiding devices that collect the accumulated liquid and direct it to the tray area through pipes, thereby preventing secondary entrainment caused by the natural fall of liquid droplets.
A water collector is a device that removes the large number of tiny water droplets present in the humid and hot air discharged from cooling towers, thereby preventing mist contamination and icing in the surrounding environment, as well as helping to save water and protect the environment. Hehe, it’s completely different from a demister.
A water collector is a device designed to remove the large number of tiny water droplets present in the humid and hot air discharged from cooling towers, thereby preventing water mist pollution and icing in the surrounding environment, as well as helping to conserve water and protect the environment. A demister is a device used to remove the mist carried at the top of the tower. It can not only reduce material loss and improve the efficiency of the tower, but also minimize environmental pollution. For the gas absorption process, it is also possible to ensure the purity of the gas, enabling subsequent processes to proceed smoothly.
Thank you to everyone above. The efficient baffle on the 2nd floor functions as a kind of water collector; doesn’t it reduce resistance compared to traditional demister screens? I have another question. Structurally, the analysis should be like this, but I wonder if there is any liquid retention phenomenon? A larger liquid holding capacity increases the load. At present, what confuses me the most is how to minimize the internal weight of the tower while ensuring that the humid hot air carries out as few water droplets as possible. Because this newly added tower will be installed on a structure with a relatively long service life.
I would like to ask the engineer on the 3rd floor: since both can remove the large number of tiny water droplets and particles carried in the humid and hot air, why are a water collector and a demister considered two different things?
The two have both similarities and differences. The scope of mist eliminators is broader; they are primarily used in equipment in the chemical industry such as distillation towers, absorption towers, and evaporators. The mist they remove is not limited to water. On the other hand, water collectors are specific terms for mist eliminators used in desulfurization towers and circulating water cooling towers to remove the water contained in air or flue gas. Generally, there are more diverse designs for mist eliminators, while water collectors usually have a folded-plate design to meet the requirements of low pressure drop even when dealing with very high gas flow rates.
I searched for Hai Chuan before finding this single piece of information about water collectors. In a sense, I think a water collector is equivalent to a demister. I searched for HaiChuan in order to find a better type of defogger to replace the current one.
The functions have some similarities, but the differences are more noticeable; the places of use and purposes are clearly different
The water collector is used in water cooling towers, where the air flow velocity is relatively high, at around 2–4 m/s (I can’t remember the exact figure; it can be found in books on circulating water management). The empty tower gas velocity in ordinary tower equipment is not that high, so using a water trap is not feasible.
They have similarities as well as differences. Water collectors are generally used in cooling towers, while wire mesh foam eliminators are typically used in distillation towers and absorption towers. Relatively speaking, the water trap has lower resistance and is suitable for handling large volumes of gas, while the demister has higher resistance and is used for gases that cause significant environmental pollution.
The functions of the two are different； Water collectors are primarily used to prevent water loss; they are widely used in cooling towers and come in the form of louvered structures! The demister screen is primarily used to remove mist, prevent vapor from carrying material to the top of the tower, and improve product quality! There are those with stainless steel wire mesh, and also those with swirl plate types! Cyclone types generally do not have guide vanes!