Serious defects in the design drawings

Your image couldn’t be posted; please keep trying so that everyone can share it. :)

Dude, can you post your CAD drawings? What can you tell from your screenshot?

The image is too small to see clearly; generally speaking, the following points apply: The vacuum pump piping should not be located at the bottom, as this would allow acid liquid to enter the pump – it should instead be arranged to draw air from the top of the tower, with a vapor-liquid separator added. There is no check valve at the pump outlet, and no filter at the pump inlet. If there is a high amount of acidic gas, the issue of temperature rise of the acid liquid needs to be taken into account; if the temperature rises too much, a cooler should be installed, which will also help reduce the load on the vacuum pump

Agree with what was said above; I also believe that once the hydrochloric acid solution becomes saturated, it should be removed, and fresh water should be added to continue the circulation and absorption process

I still agree with what was said above: a water inlet should be added and an acid outlet should be installed

This so-called design diagram is a schematic; regarding the formation of vacuum, I agree with what was said above. The biggest problem with this schematic is that the process only allows material to be fed in, but no material can be discharged; haha

Thank you all! I’m sorry the drawings are unclear and incomplete! As the brother on the fourth floor said, this system would achieve better results if counter-current absorption is used. The reaction is discontinuous, so the saturated acid can be pumped out. In this system, the vacuum pump is used to create a micro-vacuum, allowing the HCl generated by the reaction to enter the absorption tower. The vacuum pump creates a vacuum in the reaction vessel, absorption tower, and hydrochloric acid storage tank. In the red-piped section shown in the diagram, since it is a horizontal pipe, the flow rate of the water used for absorption spraying back into the tank cannot be greater than or equal to the flow rate of water pumped by the pump; as a result, water remains trapped in that horizontal section, preventing negative pressure from being created in the hydrochloric acid storage tank. Water continuously accumulates in the vapor-liquid separator of the absorption tower (at the very bottom of the tower) and is drawn into the vertical pipe section connecting the absorption tower to the pump; as a result, the vacuum pump is unable to provide the required \"stable\" negative pressure for the reaction vessel. What do you all think?