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MAN B&W 3.03 NO x Reduction by SCR The NO x in the exhaust gas can be reduced with primary or secondary reduction methods. Primary methods affect the engine combustion process directly, whereas secondary methods reduce the em<strong>is</strong>sion level without changing the engine performance using equipment that does not form part of the engine itself. For further information about em<strong>is</strong>sion control we refer to our publication: Exhaust Gas Em<strong>is</strong>sion Control Today and Tomorrow The publication <strong>is</strong> <strong>available</strong> at www.mandiesel.com under ‘Quicklinks’ → ‘Technical Papers’ Engine with Selective Catalytic Reduction System Option: 4 60 35 If a reduction between 50 and 98% of NO x <strong>is</strong> required, the Selective Catalytic Reduction (SCR) system has to be applied by adding ammonia or urea to the exhaust gas before it enters a catalytic converter. The exhaust gas must be mixed with ammonia before passing through the catalyst, and in order to encourage the chemical reaction the temperature level has to be between 300 and 400 °C. During th<strong>is</strong> process the NO x <strong>is</strong> reduced to N 2 and water. <strong>Th<strong>is</strong></strong> means that the SCR unit has to be located before the turbocharger on two�stroke engines because of their high thermal efficiency and thereby a relatively low exhaust gas temperature. The amount of ammonia injected into the exhaust gas <strong>is</strong> controlled by a process computer and <strong>is</strong> based on the NO x production at different loads measured during the testbed running. Fig. 3.03.0 . As the ammonia <strong>is</strong> a combustible gas, it <strong>is</strong> supplied through a double�walled pipe system, with appropriate venting and fitted with an ammonia leak detector (Fig. 3.03.0 ) which shows a simplified system layout of the SCR installation. MAN B&W MC/MC-C/ME/ME-C/ME-GI/ME-B Engines MAN Diesel Page of 2 198 58 94-7.1
MAN B&W 3.03 Air Orifice Air Process computer Air outlet Engine Static mixer Fig. 3.03.01: Layout of SCR system MAN B&W MC/MC-C/ME/ME-C/ME-GI/ME-B Engines Air intake SCR reactor MAN Diesel Evaporator Support Preheating and sealing oil Exhaust gas outlet Ammonia tank Deck NO and O analysers x 2 High efficiency turbocharger Page 2 of 2 198 99 27�1.0 198 58 94-7.1
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MAN B&W S65ME-C8 Project Guide Elec
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MAN B&W Engine Design .............
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MAN B&W Contents MAN B&W S65ME-C8 C
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MAN B&W Contents MAN B&W S65ME-C8 C
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MAN B&W Index A C D MAN B&W S65ME-C
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MAN B&W Index H I L MAN B&W S65ME-C
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MAN B&W MAN Diesel Engine Design 1
Page 18 and 19: MAN B&W 1.01 • Control system wit
Page 20 and 21: MAN B&W 1.03 Power and Speed with F
Page 22 and 23: MAN B&W Diesel A/S 1.04 Compar<stro
Page 24 and 25: MAN B&W 1.06 ME Engine Description
Page 26 and 27: MAN B&W 1.06 Connecting Rod The con
Page 28 and 29: MAN B&W 1.06 Exhaust Valve The exha
Page 31: MAN B&W Engine Layout and Load Diag
Page 34 and 35: MAN B&W 2.01 placed on the light ru
Page 36 and 37: MAN B&W 2.02 Constant ship speed li
Page 39 and 40: MAN B&W 2.04 Engine Layout and Load
Page 41 and 42: MAN B&W 2.04 Line 6: Propeller curv
Page 43 and 44: MAN B&W 2.04 ��
Page 45 and 46: MAN B&W 2.04 Page 7 of Example 2: S
Page 47 and 48: MAN B&W 2.04 Page 9 of Example 4: S
Page 49: MAN B&W 2.04 Example 6: Engines run
Page 52 and 53: MAN B&W 2.06 Specific Fuel Oil Cons
Page 54 and 55: MAN B&W 2.08 SFOC reference conditi
Page 56 and 57: MAN B&W Diesel A/S 2.09 SFOC Calcul
Page 58 and 59: MAN B&W Diesel A/S 2.10 SFOC calcul
Page 60 and 61: MAN B&W 2.11 Fuel Consumption at an
Page 63: MAN B&W MAN Diesel Turbocharger Cho
Page 66 and 67: MAN B&W 3.02 Exhaust Gas By�pass
Page 71: MAN B&W MAN Diesel Electricity Prod
Page 74 and 75: MAN B&W 4.01 MAN Diesel Page 2 of 6
Page 76 and 77: MAN B&W 4.01 PTO/RCF Side mounted g
Page 78 and 79: MAN B&W 4.01 Yard deliveries are: 1
Page 80 and 81: MAN B&W 4.03 Engine preparations fo
Page 82 and 83: MAN B&W 4.03 Crankshaft gear lubric
Page 84 and 85: MAN B&W 4.03 Air cooler Pole wheel
Page 86 and 87: MAN B&W 4.04 PTO type: BW II/GCR Po
Page 88 and 89: MAN B&W 4.04 Auxiliary Propulsion S
Page 90 and 91: MAN Diesel 4.06 L16/24 GenSet Data
Page 96 and 97: MAN Diesel 4.08 L23/30H GenSet Data
Page 105: MAN B&W MAN Diesel Installation Asp
Page 108 and 109: MAN B&W 5.02 Space Requirements <st
Page 110 and 111: MAN B&W 5.03 Crane beam for turboch
Page 112 and 113: MAN B&W Diesel A/S 5.04 Engine room
Page 114 and 115: MAN B&W 5.04 MAN B&W Double�Jib C
Page 116 and 117: MAN B&W Diesel A/S 5.06 Engine and
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MAN B&W Diesel A/S 5.06 S65ME-C 3,5
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MAN B&W Diesel A/S 5.08 Mass of Wat
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MAN B&W Diesel A/S 5.09 6,244 (AD)
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MAN B&W 5.10 Counterflanges Referen
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MAN B&W 5.11 Engine Seating and Hol
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MAN B&W 5.12 Engine Seating Profile
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MAN B&W 5.13 Engine Top Bracing The
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MAN B&W 5.14 Mechanical Top Bracing
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MAN B&W 5.16 Components for Engine
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MAN B&W 5.16 EICU (Engine Interface
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MAN B&W 5.17 Shaftline Earthing Dev
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MAN B&W 5.17 Suppliers ��
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MAN B&W 6.01 Calculation of L<stron
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MAN B&W Diesel A/S 6.03 Page 1 of 5
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MAN B&W Diesel A/S 6.03 Pumps Coole
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MAN B&W Diesel A/S 6.03 Capacities
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MAN B&W Diesel A/S 6.04 The derated
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MAN B&W Diesel A/S 6.04 Page 4 of 1
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MAN B&W 6.04 ��
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MAN B&W 6.04 Exhaust Gas Amount and
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MAN B&W 6.04 Page 10 of 12 ∆M amb
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MAN B&W Diesel A/S 6.04 Final calcu
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MAN B&W 7.01 Pressuris</str
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MAN B&W 7.01 The HCU has a leakage
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MAN B&W 7.03 Fuel Oil Pipes and Dra
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MAN B&W 7.04 Heat Loss in Piping Pi
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MAN B&W 7.05 Components for fuel oi
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MAN B&W Diesel A/S 7.05 Fuel oil fi
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MAN B&W 7.06 ��
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MAN B&W 8.01 Lubricating and Coolin
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MAN B&W 8.02 Hydraulic power supply
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MAN B&W 8.03 From system oil Fig. 8
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MAN B&W 8.05 Components for Lubrica
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MAN B&W 8.05 Lubricating oil outlet
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MAN B&W 8.06 Note: When calculating
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MAN B&W 8.08 Hydraulic oil back�f
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MAN B&W 8.09 Hydraulic control oil
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MAN B&W 8.09 Hydraulic Control Oil
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MAN B&W 9.01 Cylinder Lubricating O
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MAN B&W 9.02 Due to the sulphur dep
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MAN B&W 9.02 ��
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MAN B&W 9.02 ��
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MAN B&W 10.01 Stuffing Box Drain Oi
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MAN B&W 11.01 Central Cooling Water
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MAN B&W 11.03 Components for Centra
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MAN B&W MAN Diesel Seawater Cooling
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MAN B&W 12.02 Seawater Cooling Syst
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MAN B&W 12.04 Components for Seawat
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MAN B&W 12.06 Jacket Cooling Water
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MAN B&W 12.07 Deaerating tank �
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MAN B&W MAN Diesel Starting and Con
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MAN B&W 13.02 Components for Starti
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MAN B&W 13.03 Exhaust Valve Air Spr
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MAN B&W MAN Diesel Scavenge Air 14
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MAN B&W 14.02 Auxiliary Blowers The
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MAN B&W 14.04 Electric Motor for Au
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MAN B&W 14.06 Scavenge Air Box Drai
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MAN B&W 14.07 �� Th
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MAN B&W 15.01 Exhaust Gas System Th
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MAN B&W 15.02 Cleaning Systems �
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MAN B&W 15.03 Exhaust Gas System fo
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MAN B&W 15.04 Exhaust gas silencer
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MAN B&W 15.05 Measuring Back Pressu
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MAN B&W 15.06 Forces and Moments at
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MAN B&W 15.07 Diameter of Exhaust G
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MAN B&W 16.01 Engine Control System
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MAN B&W 16.01 Engine Control System
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MAN B&W 16.01 Mechanical�hydrauli
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MAN B&W 16.01 Auxiliary equipment s
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MAN B&W MAN Diesel Vibration Aspect
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MAN B&W 17.02 2nd Order Moments on
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MAN B&W 17.03 Electric Driven Momen
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MAN B&W Power Related Unbalance <st
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MAN B&W 17.05 ��
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MAN B&W 17.06 Axial Vibrations When
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MAN B&W Diesel A/S 17.07 External F
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MAN B&W 18.01 Monitoring Systems an
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MAN B&W 18.02 PMI System, Type On
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MAN B&W 18.03 CoCoS�EDS Sensor L<
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MAN B&W 18.04 General outline of th
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MAN B&W 18.04 Alarms for UMS - Clas
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MAN B&W 18.04 Slow down for UMS - C
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MAN B&W 18.05 Local Instruments Pag
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MAN B&W 18.05 Local instruments Rem
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MAN B&W 18.06 Fig. 18.06.01a: Oil m
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MAN B&W 18.06 Bearing Temperature M
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MAN B&W 18.07 Identification of Ins
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MAN B&W 19.01 Disp
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MAN B&W 19.02 Specification for pai
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MAN B&W 19.03 A3 + B3 (option 4 12
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MAN B&W Dispatch P
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MAN B&W 19.06 List
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MAN B&W 19.07 Exhaust valve, <stron
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MAN B&W 19.08 Table B: Page 2 of 2
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MAN B&W Diesel A/S 19.10 Li
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MAN B&W MAN Diesel Project Suppport
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MAN B&W 20.02 Computeris</s
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MAN B&W 20.03 We base our first quo
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MAN B&W 20.04 Main Section 939 Engi
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MAN B&W 20.04 Engine production and
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MAN B&W Appendix A Symbols for Pipi
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MAN B&W Appendix A No. Symbol Symbo
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