Related by context. Frequent words. (Click for all words.) 63 diesel particulate filters 61 aftertreatment 59 desulfurization 58 diesel particulate filter 58 nitrogen oxide NOx 58 gas recirculation 57 flue gas 57 NOx reduction 56 diesel engines 55 scrubbers 55 nitrogen oxide 54 particulate filter 54 integrated gasification 54 microturbine 54 baghouse 54 scrubber 53 particulate matter emissions 53 particulate emissions 52 nitrogen oxide emissions 52 diesel engine 52 NOx 51 combustion turbine 51 FGD 51 nitrogen oxides NOx 51 combustion turbines 51 desulphurization 50 NOx emissions 50 membrane filtration 50 coal gasification 49 SCR 49 nitrous oxides 49 nitrogen oxides 49 reverse osmosis 49 diesels 48 steam turbine 48 diesel powered 48 evaporative 47 hydrogen chloride 47 cogeneration 47 powder coating 47 combustion 47 steam boilers 47 anaerobic digesters 47 Integrated Gasification Combined Cycle 47 CoaLogix 47 emission 47 microturbines 47 steam turbine generator 47 steam turbines 47 flue gases 46 cleaner burning 46 hydraulics components 46 plasma gasification 46 gasification 46 VOC emissions 46 hybrid propulsion 46 boilers 46 filtration 46 XTreme Power ® 46 emission reduction 46 hydraulic fluids 45 coal fired 45 ultrafiltration 45 vacuum furnace 45 supercritical 45 mercury emissions 45 combustor 45 Emission Control 44 exhaust emission 44 ethylene oxide 44 sulfur dioxide emissions 44 cylinder deactivation 44 repower 44 IGCC 44 repowering 44 Nexterra 44 fuel injector 44 heat exchangers 44 wastewater treatment 44 burnishers 44 emissions 44 Bluetec 44 sulfur dioxide 44 syngas 44 biomass gasification 44 dewatering 44 internal combustion engines 43 Invensys plc 43 degreasing 43 gasifier 43 diesel exhaust 43 biomass boilers 43 Clean Diesel 43 cleaner fuels 43 ceramic substrates 43 CSRV 43 cylinder diesel 43 turbine generators 43 water softeners 43 compressor 43 compressors