Curved duct type variable pressure washing device

Abstract

A curved-channel variable pressure scrubbing device mainly comprises a tower body, a plurality of scrubbing units and a plurality of packing units disposed within the tower body, and at least one demister unit. The tower system has an exhaust gas inlet and a clean air outlet. Each scrubbing unit has a plurality of spray nozzles connected to a circulating pump for spraying scrubbing liquid. The packing unit comprises spaced-apart baffles and blades arranged alternately with the baffles in a continuous serrated shape to form a dense, tortuous channel. When gas passes through the tortuous channel, pollutants in the exhaust gas and scrubbing liquid impact the surface of the blades in the packing unit, and after aggregation, flow downwards. The tortuous channel geometry causes a sudden change in the direction of the airflow, and the impact and inertial force result in sufficient mixing and agitation of the exhaust gas and the sprayed scrubbing liquid within the tortuous channel, improving the mass transfer coefficient and thus increasing the scrubbing efficiency. After scrubbing, the gas passes through the demister unit to remove water mist before being discharged clean gas into the atmosphere.

Claims

1. A curved-channel type pressure-variable scrubbing device, comprising: a tower body, having an exhaust gas inlet for introducing exhaust gas and a clean air outlet; a plurality of scrubbing units arranged vertically inside the tower body, each having a plurality of spray elements connected to a circulating pump; the circulating pump delivers scrubbing liquid to the spray elements for uniform spraying; a plurality of packing layer units disposed below the scrubbing units, each having densely arranged tortuous channels; when the exhaust gas passes through the tortuous channels, pollutants in the exhaust gas and the scrubbing liquid collide with the surface of the packing layer units, and after aggregation, flow downwards; the tortuous channels cause the airflow direction to suddenly change and bend, and the impact and inertial force cause the exhaust gas flowing through the tortuous channels and the sprayed scrubbing liquid to achieve sufficient mixing and agitation, improving the mass transfer coefficient and thus improving the scrubbing efficiency; at least one demisting unit disposed in the tower body for removing water mist from the treated exhaust gas and discharging clean gas to the atmosphere.

2. The curved-track variable-pressure washing device as described in claim 1, wherein, The spraying device is connected to the circulation pump via a first pipe, and the circulation pump is connected to a filter tank located below the tower via a second pipe. The circulation pump transports the washing liquid from the first pipe to the washing unit, and the washing liquid that falls into the filter tank is filtered and then pumped back to the first pipe via the second pipe.

3. The curved-track variable-pressure washing device as described in claim 1, wherein, The filling layer unit comprises spaced partitions and blades arranged alternately with the partitions in a continuous serrated shape to form a dense, tortuous channel.

4. The curved-track variable-pressure washing device as described in claim 1, wherein, The defogging unit is equipped with a fan, which powers the discharge of clean gas into the atmosphere.

5. The curved-track variable-pressure washing device as described in claim 1, wherein, The washing liquid is sprayed onto the exhaust gas, which flows from the washing unit and the filling layer unit of the upper layer to the washing unit and the filling layer unit of the next layer at a flow rate greater than 4 m / s.

Images