Sealing issue of liquid chlorine storage tanks
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The factory site originally had 2 liquid chlorine storage tanks; these are now to be sealed off and turned into warehouses. Fans and alkali tanks will also be added to absorb any chlorine that leaks out. It is now necessary to calculate the amount of air flow and alkali required in the event of an accident in these liquid chlorine warehouses. The air flow rate for such an emergency is calculated based on 12 air changes per hour for the volume of the warehouse. At present, there are no relevant theories or standards available to determine how to calculate the amount of chlorine that leaks out; so how should the amount of chlorine leaked in an accident be calculated? Please ask an expert for guidance. Also, is it necessary for the building structure of the liquid chlorine storage warehouse to be made of concrete? Can’t open the windows or doors yet?
Our company’s structures are made of ordinary brick walls, with windows and doors. However, based on our years of experience and the guidelines provided by the Chlor-Alkali Association, it is recommended to use enclosed structures without windows; in the event of a chlorine leak, the sealing performance of windows cannot be guaranteed
I implore the same as before; the company is also facing the issue of sealing the liquid chlorine storage tanks
Our liquid chlorine storage tanks are equipped with doors and windows; the windows are roller-shutter types that can be controlled from either the control room or the site. Inside the tank enclosure, there are chlorine gas detectors, cameras, an exhaust system, as well as alkali wash sprayers and water sprayers. In the event of a leak, the control room can lower the roller shutters and activate the internal and external spraying systems along with the exhaust system, thereby directing the leaked chlorine gas to the alkali wash tower for decomposition
A design was created that is enclosed, with doors but no windows. The problem now is that experts require a design for emergency ventilation, specifying 14 cycles of ventilation according to the standards; however, the experts do not accept this and insist that the calculation should be based on the amount of leakage. I’m not sure what basis there is for such a calculation method. What are everyone’s opinions?
Since it’s a sealed system, it’s best not to have any windows; doors must be kept, but they should remain closed at all times. Otherwise, how can it be considered a sealed system? Is the leakage amount calculated based on the leakage that occurs when all the internal tanks are filled with liquid chlorine?
We have previously designed an emergency handling system for a phosphorus trichloride manufacturer’s liquid chlorine storage facility (4 30-cubic-meter liquid chlorine tanks), which includes automatic alarm, detection, and pressure relief systems
I wonder what are the requirements regarding the distance between this horizontal storage tank and the warehouse? Is the minimum spacing fire protection requirement 3m?
Yes, the tank must be at least 3 meters away from the wall