Liquid chlorine storage tank collection pool

The floor of the factory building has a slight slope to facilitate the flow of liquid chlorine into the collection tank; above the collection tank, there is an emergency chlorine exhaust hood that draws the chlorine gas into the emergency absorption device

If the ground slope is not corrected again, is it in compliance with **the regulations** to dig trenches?

The storage area is completely enclosed, equipped with a suction system; a barrier is installed at the doors, and alkaline solution is sprayed from the outside

So what should be done with the collected liquid chlorine? Natural vaporization exhaust absorption? Transferred for production? Add alkali for waste liquid treatment? It certainly won’t work to use natural vaporization for exhaust gas absorption, right? Would the design require a long vaporization time and significant capabilities for exhaust gas absorption? Where to dispose of the absorbed waste liquid? If transfer is done through production, how is it transferred? Should we increase pressure or add a liquid chlorine pump? Boosting the pressure in this collection tank surely won’t work, right? Does collecting in a storage tank make it a pressure vessel? Then adding a liquid chlorine pump would be relatively easier to implement, right? But how can it be ensured that liquid chlorine is not contaminated during collection, and what is the impact on the operation of the liquid chlorine pump or its use as a raw material in production? Add alkali for waste liquid treatment? This won’t work either, right? Do anyone else have other ways? Would it be better to use a small liquid chlorine storage tank as a collection tank? After being collected in this way, it can be removed by applying pressure or through natural vaporization; once the desired pressure is reached, the pressure can be released for use in production? I have some questions regarding the design of the backflow pump. For a storage tank with a capacity of 50–60 m3, a backflow pump with a flow rate of 25 m3 is planned to be used, along with an inlet pipe of 150 mm diameter. The backflow process takes at least one hour – is this duration too long? Moreover, a large amount of liquid chlorine remains in the pipes and pump housings. The pump housings are located more than 2 meters below the ground level, and it is inconvenient to replace this liquid chlorine during annual inspections and maintenance. So personally, I prefer to have the accident storage tank placed at a lower level; this way, the high level difference can enable gravity flow, which would work well. With a 150-mm backflow pipe, gravity flow won’t be feasible for very long! !

The accidental chlorine is collected and then processed; it’s not through natural vaporization, right? Since liquid chlorine has a low boiling point, it freezes during the vaporization process, resulting in a very slow vaporization rate. Furthermore, the design of the emergency transfer pump enables the liquid chlorine in the storage tank to be drained within one hour.

Above the accident chlorine collection tank is connected a device for absorbing accident chlorine, which is a separate unit designed to absorb chlorine gas; mobile and fixed evacuation pipes are installed on the interior side of the enclosed factory building, while a dual-spray system is installed on the exterior side of the building