SYSTEM AND METHOD FOR MIXING TEMPERING AIR WITH FLUE GAS FOR HOT SCR CATALYST

• Main Authors: MERCHANT, Laxmikant, ZHANG, Hua, PONYAVIN, Valery Ivanovich, KIPPEL, Bradly Aaron
• Format: Patent
• Language: English; French; German
• Published: 30.03.2022
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM ENGINES; TRANSPORTING; WEAPONS

A simple-cycle gas turbine system 10 includes an injection system 54 including a plurality of injection tubes 56 that may inject a fluid into a duct of an exhaust processing system 14 that may process exhaust gas generated by a gas turbine engine. The exhaust processing system includes a selective catalytic reduction (SCR) system 80 that may reduce a level of nitrogen oxides (NO x ) within the exhaust gas; and a mixing system 64 positioned adjacent to the plurality of injection tubes and within the exhaust processing system. The mixing system includes a mixing module 124 having a plurality of turbulators that may swirl the fluid, or the exhaust gas, or both, in a first swirl direction to encourage turbulent flow along an axis of the exhaust processing system and thereby facilitate mixing between the fluid and the exhaust gas.