Patent ID: 6106792
Filing Date: 2000-08-22
Classification: B01D

Abstract:
A method of removing TDI from a gas comprising the steps of:passing the gas downward through an upward flowing first spray of water in a tank at a first velocity to react the TDI in the gas with the water;directing the gas against water in a lower portion of the tank;directing the gas upward along an interior wall of the tank;disrupting an upward laminar flow of the gas proximate the interior wall of the tank; anddirecting the gas upward through the tank at a slower velocity through a downward flowing second spray of water to further react the TDI in the gas with water, whereby urea formed from the reaction of the TDI with the water is washed from the gas by the first and second sprays of water and collected by the water in the lower portion of the tank.