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Is it necessary to install a vent valve on the hydrochloric acid storage tank to prevent evaporation? How are your hydrochloric acid storage tanks designed?

2022-02-21View Original

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Is it necessary to install a vent valve on the hydrochloric acid storage tank to prevent evaporation? How are your hydrochloric acid storage tanks designed? Is the feed supplied from the bottom?
Reply #22022-02-21
In hydrochloric acid storage tanks, rubber-lined vent valves should be installed due to the evaporation of acid mist; furthermore, the exhaust gases need to be absorbed. Acid should be collected once a day. The requirements for exhaust gas absorption can be met by modifying the feeding method from the top of the hydrochloric acid tank to feeding from the bottom, and it is important to maintain a distance of around 200 mm between the feeding pipe at the top and the bottom of the tank in order to achieve good processing results.
Reply #32022-02-22
We added an exhaust gas absorption system later on; it’s sufficient to replace the liquid regularly.
Reply #42022-02-22
For the exhaust gas at the top of the hydrochloric acid tank, a water seal is sufficient; then, a small spray tower can be used to absorb the exhaust gas with water. Feeding is not recommended from the bottom; instead, feeding should be done from the top of the tank, with the feed pipe extending about 200 mm below the bottom of the tank. .
Reply #52022-02-22
But won’t drawing material out like this deflate the storage tank?
Reply #62022-02-22
But won’t drawing material out like this deflate the storage tank?
Reply #72022-02-22
But won’t drawing material out like this deflate the storage tank?
Reply #82022-02-22
Therefore, a gasketed breather valve should be installed at the top to draw in air under negative pressure and release air under positive pressure; the exhaust pipe also needs to be connected to an exhaust gas absorption device, while the intake side can be directly connected to the atmosphere
Reply #92022-02-22
We use the absorbed water directly in a circulation system that sends it back to the absorbed water tank

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