Regarding the issue of exhaust gas absorption after the rupture disc explodes

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This unit has a reactor equipped with a burst disc that ruptures at 0.8 MPa; the gas is released through a pipe with an inner diameter of 80 mm into an absorption tower with a diameter of 1.5 meters. Using the simple formula Q=A1*V1=A2*V2, where flow rate equals cross-sectional area times flow velocity, the engineers calculated that the flow velocity of the gas decreases by a factor of 351 after it enters the absorption tower through a DN80 pipe. Based on the ideal gas law, the pressure also drops by a factor of 351. I find it hard to agree with this estimation method; I think dynamic gas flow should be estimated using Bernoulli’s equation ! The absorption tower contains a spraying liquid that can completely absorb the incoming gas at the moment of contact, so the gas does not accumulate inside the tower. Could you please take a look and see if the estimated 351 times figure is close to the actual value?