초록 ▼

An exhaust gas purification device comprising a rotary type heat accumulator rotated by a turbine. An NOx absorbent is carried on this heat accumulator. The exhaust gas discharged from the turbine circulates in the heat accumulator via an exhaust duct, and at this time, the heat accumulator is heate

An exhaust gas purification device comprising a rotary type heat accumulator rotated by a turbine. An NOx absorbent is carried on this heat accumulator. The exhaust gas discharged from the turbine circulates in the heat accumulator via an exhaust duct, and at this time, the heat accumulator is heated and, at the same time, NOx is absorbed into the NOx absorbent. Air discharged from the compressor is heated when circulating in the heat accumulator and is subsequently fed into the combustion vessel. When the fuel is supplied to the air to be fed into the heat accumulator and becomes a rich gaseous mixture, NOx is released from the NOx absorbent.

대표청구항 ▼

An exhaust gas purification device comprising: a combustion chamber; a heat accumulator through which at least a portion of supply gas fed into the combustion chamber and exhaust gas discharged from the combustion chamber alternately flow, heat being accumulated in the heat accumulator when the exha

An exhaust gas purification device comprising: a combustion chamber; a heat accumulator through which at least a portion of supply gas fed into the combustion chamber and exhaust gas discharged from the combustion chamber alternately flow, heat being accumulated in the heat accumulator when the exhaust gas flows within the heat accumulator, the supply gas being heated by heat accumulated in the heat accumulator when the supply gas flows within the heat accumulator; an NOx absorbent carried on the heat accumulator, the NOx absorbent absorbing NOx when an air-fuel ratio of gas contacting the NOx absorbent is low and releasing an absorbed NOx when an air-fuel ratio of gas contacting the NOx absorbent is one of a rich air-fuel ratio and the stoichiometric air-fuel ratio, the NOx absorbent absorbing NOx contained in the exhaust gas when the air-fuel ratio of the exhaust gas flowing within the heat accumulator is low; and means for making an air-fuel ratio of the portion of the supply gas flowing into the heat accumulator one of a rich air-fuel ratio and the stoichiometric air-fuel ratio so that NOx is released from the NOx absorbent when the air-fuel ratio of the supply gas flowing within the heat accumulator is one of a rich air-fuel ratio and the stoichiometric air-fuel ratio.