EXHAUST GAS POST-PROCESSING APPARATUS AND METHOD FOR SULFUR OXIDE REMOVAL

摘要

The present disclosure relates to an apparatus and a method of post-processing exhaust gas for removing sulfur oxides, and more particularly, relates to an apparatus and a method of post-processing exhaust gas for removing sulfur oxides, in which exhaust gas is produced when fuel is combusted in a diesel internal combustion engine and the exhaust gas is purified by the apparatus for post-processing exhaust gas, and in this case, sulfur oxides (SOx) is produced and stacked in a catalytic device (diesel oxidation catalyst (DOC) and selective catalytic reduction (SCR)) equipped in the apparatus for post-processing exhaust gas during a process of purifying the exhaust gas, and the sulfur oxides is removed.

主权项

1. An apparatus for post-processing exhaust gas for removing sulfur oxides, the apparatus comprising:
an input unit configured to receive one or more elements of operation information of a vehicle among an engine operation time, an engine fuel consumption quantity, a vehicle trip distance, and sulfur oxides produced quantity; a memory unit configured to store a first operation information value for processing sulfur oxides and a second operation information value for processing sulfur oxides, wherein the first operation information value and the second operation information value are generated by evaluating the operation information received from the input unit; a first processing unit configured to determine whether the first operation information value stored in the memory unit reaches a predetermined first reference value, and to generate a low temperature control command when the first operation information value reaches the first reference value; a second processing unit configured to determine whether the second operation information value stored in the memory unit reaches a predetermined second reference value, and to generate a high temperature control command when the second operation information value reaches the predetermined second reference value; and a sulfur oxides removal operating unit configured to remove a first sulfur oxides by heating a catalytic device under a first temperature condition when the low temperature control command is generated from the first processing unit, and remove the first sulfur oxides and a second sulfur oxides by heating the catalytic device under a second temperature condition when the high temperature control command is generated from the second processing unit.