Headline: Univers Condensed Current Emissions Technologies Bold 40 pt Headline: Univers Condensed Bold: 24 pt Nick Detor MIRATECH Corporation EGSA Spring Convention 2008
� Introduction/Agenda � Overview of Federal and Selected Local Regulations � Catalyst Technologies – Decision Tree – How to choose DIY Emission Retrofits – SCR (Selective Catalytic Reduction) – NSCR (Non- Selective Catalytic Reduction, e.g. 3-Way Catalyst)
� Emission Requirements are Changing � Federal Regulations – Diesel Tier levels (1, 2, 3, 4) – New Source Performance Standards for gas/NG/LPG � State/Local Regulations – California Dist. Gen. standards – New DG regulations in northeast, TX, etc. � Customer Drivers – Peak Shaving/Demand Response – Emission Offset Creation – LEED Certification – Title V Netting (Synthetic Minor) – Issues with HVAC intakes – Good Neighbor
� Federal Emission Standards Tier Standards for Stationary Diesel Engines >750 bhp NOx NMHC NOx+NMHC CO PM g/bhp-hr g/bhp-hr g/bhp-hr g/bhp-hr g/bhp-hr Tier 1 6.90 1.0 8.5 0.40 Tier 2 4.80 2.60 0.15 Tier 3 No Tier 3 for > 750 kW Tier 4 Interim 0.50 0.30 2.60 0.07 Tier 4 Final 0.50 0.14 2.60 0.022 � The Clean Air Act of 1990 turned over the rule making and enforcement of emission regulation to the states. Rules are still based on the National Ambient Air Quality Standards, and the federal government retains the right to step in if states are not meeting their air quality goals. States can also choose to enact regulations more stringent than the federal Tier standards above.
� Federal Emission Standards Performance Standards for Spark Ignited Engines Maximum NOx NMHC CO Power g/bhp-hr g/bhp-hr g/bhp-hr Non-Emerg NG 25 – 500 2.0 1.0 4.0 Non-Emerg 25-500 1.0 0.7 2.0 Lean Burn LPG Non-Emerg NG > 500 2.0 1.0 4.0 Non-Emerg > 500 1.0 0.70 2.0 Lean Burn LPG � The Clean Air Act of 1990 turned over the rule making and enforcement of emission regulation to the states. Rules are still based on the National Ambient Air Quality Standards, and the federal government retains the right to step in if states are not meeting their air quality goals. States can also choose to enact regulations more stringent than the federal Tier standards above.
� Selected Local Standards Application NOx NMHC CO PM g/bhp-hr g/bhp-hr g/bhp-hr g/bhp-hr Diesel Tier or California Current EPA Tier Level standby 0.01 SI California 0.02 0.01 0.03 -- Continuous Non- Emergency Texas 4.5 -- 3.0 -- Diesel, >750 HP New Jersey Non- 2.3 -- 4.0 Emergency Diesel, >500 HP
� Catalyst Decision Tree
� SCR Overview
� Open Loop System Layout
� Closed Loop System Layout
� SCR Installation Examples In series with DPF On roof of 1500 kW
� Urea Tanks � Typically Crosslinked Polyethylene. � Urea is Non-Hazardous; tank may be with or without containment. � Fill alarms and level switches typically provided � For a 2 engine system typically both panels would be fed from a single tank.. � For 3+ engine systems a duplex pump skid is typically supplied for redundancy.
� 3-Way Catalyst Overview O2 + NOx NOx + H2 + CO CO + HC HC = CO2 + H2O + N2 O O O O N O O H N O C N N C O O O O O H H O N C O O N N C C N C N O O H H O O O O O O N N C N C H N O O N O Exhaust Flow 3-Way Catalyst Element
� 3-Way Catalyst w/ AFRC
� 3-Way Catalyst Installations Stand-alone Catalyst for CHP Installation Combination Silencer/Catalyst
�
� Thank You! � Nick Detor Western Regional Manager MIRATECH Corporation 909-821-0039 ndetor@miratechcorp.com
Recommend
More recommend
