Install a water seal for compression?

Yes, when a press is installed, an electric decoking system is usually required to be equipped with water seals, one at the inlet and one at the outlet, mainly for maintenance purposes.

It can definitely be established, as it is for maintaining the water seal, so resistance effects are not taken into consideration; the key question is whether it is necessary or not If a maintenance water seal is installed in front of a single unit to prevent damage to the inlet valve of that unit, it can be completely replaced by a backup valve. If a maintenance water seal is installed on the main inlet pipeline, it is even more pointless, as using such a seal would mean shutting down the entire plant; generally, the towers or pipelines in the preceding sections already serve as natural water seals, so there is no need for an additional one.

Typically, there is a cooling tower in front of the electro-desulfurization unit and a separation tower (or separator) behind it – this is a fairly standard setup. In my opinion, installing a water seal in this case is pointless. Complementary design is not necessarily required, as design firms may consider only one aspect when designing; every factory can surely come up with one or two examples. Yet it is still necessary for safety assessments, and perhaps this is simply an inevitable reality for enterprises? It’s ridiculous to say this, but our liquid ammonia storage area was designed according to oil depot standards, with typical water seal wells installed. Everyone knows that liquid ammonia is miscible with water – how can it be discharged through water seal wells just like oil? And yet, such a thing actually passed. Of course, several more groups of experts came later to conduct inspections and recommended improvements in this regard... Hahaha, this is typical of Chinese design institutes. I’m not against complex design, nor do I ignore the importance of safety; but I absolutely oppose those designs that are created in isolation and those that, in the name of safety, end up being the least safe and most wasteful of all! ! ! ! ! Those who support it, please leave a comment! This post was last edited by ZZJJAA70 on 2009-3-23 21:38.]

It is feasible and highly necessary to install water seals at the inlet and outlet of electrostatic defouling； The purpose of installing a water seal is to enable maintenance or thermal descaling without shutting down the system ； Our factory uses seals; the inlet features a standard water seal groove, while the outlet is replaced by a \"U\"-shaped tube ； Valves are installed before the inlet water seal, after the outlet water seal, and on the bypass line; they are DN900 globe valves, and a vent valve is installed on the side of these valves that is close to the electrostatic desulfurization unit – it is a DN80 gate valve ； When it is necessary to handle electrostatic defouling, take a shortcut by closing the main inlet and outlet valves, opening the vent valve, and filling the water seal until it overflows; this allows for routine treatment of electrostatic defouling.

Agree with the opinion above! There are usually several electrostatic precipitators; how can they be maintained without a water seal? ? ? Can’t we park anywhere?

It is not necessary to install a water seal just for routine maintenance, but it is essential in order to carry out maintenance on the electrostatic defouling unit without disrupting production. This allows production to continue as normal while electrostatic defouling is paused, and the unit can be maintained through isolation using the water seal. It is very necessary from a production perspective.

From a technical perspective, the pressure at this point during parking is approximately that at the outlet of the gas tank, around 400 mmH2O. During normal operation, the pressure here is about that at the outlet of the Roots blower, around 40 KPa = 4080 mmH2O. Considering that the Roots blower might experience malfunctions, the outlet pressure could reach 45 or 50 KPa. Therefore, setting the pressure at 60 KPa is absolutely safe – that’s 6120 mmH2O. Obviously, the water seal here should be set to a height of 5–6 meters. The investment required isn’t very high; if the electrostatic precipitator needs to be taken apart for maintenance frequently, it’s better to install such a water seal

It is possible to use a water seal, but it must have sufficient height. Our company also sets it up in this way. Once, a compression unit stopped operating due to it breaking through the water seal, which led to a plant-wide shutdown. From a safety perspective, a water seal cannot be used as a blind flange; someone should be assigned to monitor it, and it is advisable to install valves on the water seal to increase safety levels