EPT Series Emergency Gas Scrubber

The Ejector-venturi Packed Tower (EPT) Series is applied throughout industry for the absorption of various gases including chlorine. Fans are not required as the highly reliable ejector-venturi scrubber entrains the contaminated gas and causes air movement through the system. 

The first stage venturi is well suited to handle the high initial concentrations of chlorine gas. After the gas exits the venturi, the caustic is disengaged and contained within the separator. The gas then passes through the packed tower where the chlorine concentration is reduced to a level below that required by the prevailing codes. A recirculation pump supplies the required caustic solution to the ejector-venturi scrubber and the packed tower. 

De Nora Water Technologies has full scale tested the system for a 2,000 pound chlorine release at a rate of 425 lb/min with a full 3,000 cfm scrubber exhaust rate. The chlorine concentration at the exit of the system did not exceed 0.3 ppm at any time during the test. 

The flow of liquid and gas is both co-current and countercurrent with a liquid rate to each stage matched to absorption performance. This precludes the possibility of caustic starvation. The system has the capability to handle the worse case release rate of liquid chlorine based on total vaporization of the chlorine. 

The EPT 3000 and 5000 are designed to neutralize a one ton portable tank with a leak rate of up to 437 lb/ min throughout the leak event. An EPT 5000 system is normally considered only when the gas capacity needs to be split between two or more rooms or if a single room volume exceeds 50000 cubic feet. 

For capacities up to 90 ton rail cars, consult De Nora for dimensions, specifications and details of multi-ton wet EPT Series emergency gas scrubbers.