Methanol to Synthetic

Transcription

1 y Methanol to Synthetic Fuel CCS (Otto-Diesel) (Otto Diesel) Fuel for reduced NOX-Emissions NOX Emissions Methanol to Diesel (MTD) F. Schmidt, Frankfurt, December 2015

2 Methanol and Synthetic Fuels Methanol-based fuels Gasoline Diesel Otto-Diesel Methanol itself as fuel Oxygenates as fuel additives MTBE Polyoxymethylenes F. Schmidt 2

3 Sense and Nonsense of Synthetic Fuels Nonsense because of oil prize??? Quelle: Die Welt, Strategic thinking leads to theneed for synthetic fuels Limited resources Great flexibility of the carbon source Great tflexibility of fuel properties Oil price is a political weapon Independence from conflict areas F. Schmidt 3

4 Environmental benefits by synthetic fuel from methanol Emission comparison Diesel - Shell GTL (without secondary measures) CCS Motor Quelle Volkswagen 2006 F. Schmidt 4

5 Environmental benefits by synthetic fuel from methanol CCS technology Conventional fuels vs CCS engine* Self ignition (Diesel) Advantage of low fuel consumption Disadvantage of higher pollutant emissions (soot, NOx) Otto engine Advantage: less emissions i Disadvantage: ignitability. The higher the quality of the fuel, the higher is the knock resistance, ie the lower is the ignitibility. Requirements A significant reduction of diesel engine emissions requires intensive, continued development of the diesel combustion process and the use of homogenisation effects. Zones with a lack of oxygen that cause soot to form as well as local peak temperatures that are responsible for NOx emissions are then avoided or reduced. (*Source Wikipedia) F. Schmidt 5

6 Environmental benefits by synthetic fuel from methanol CCS Technology CCS Engine CCS Engine The ignition is initiated via common spark ignition at low and high load as in gasoline engines. In the medium performance range the mixture combustion is initiated by homogeneous self-ignition. An electrically controlled camshaft adjustment controls the valve timing. (Source Wikipedia). F. Schmidt 6

7 Environmental benefits by synthetic fuel from methanol CCS Technology CCS Fuel MtSynFuel will make it possible to a great extent: combining thelow emissions of a petrol enginewith the low consumption of a diesel engine. This is based on the use of homogenisation effects that can be achieved with engine and fuel measures. Specifically changingfuel properties is a decisive way to master homogenisation in diesel engines. F. Schmidt 7

8 Quelle Volkswagen 2006 Environmental benefits by synthetic fuel from methanol Potential for emission improvement

9 Environmental benefits by synthetic fuel from methanol Basic demands on CCS fuel CCS fuel is produced from methanol via olefins CCS fuel helps, due to its low boiling point and ignition capability to achieve homogeneous combustion. Because in the CCS engine the fuel injection occurs earlier than in a conventional diesel. This gives the fuel more time to mix with air, but the fuel must not ignite too early. COD Diesel as CCS fuel F. Schmidt 9

10 What is the COD-Process MOGD = MTSynfuel CCS -Fuel Methanol t/d MTP Methanol to Propylene Paraffinic Hydrocarbon Recycle Olefinic Hydrocarbon Recycle COD Conversion of Olefisns to Diesel Product Separation Distillate t/d CCS - Fuel Gasoline 1860 t/d Discontinous In-situ Catalyst Regeneration Gasoline Water Recycle Light Ends 420 t/d Source Rothaemel et al., Lurgi USP B2 F. Schmidt 10

11 Other Technologies to reduce Emissions Hybrid Electric Vehicle Hybrid Otto Diesel Engine Hybrid Electric Vehicle Only one engine Only one fuel (refueling) Only one fuel tank Low NOX at all operating conditions Low CO for all operating conditions Two different engines Conventional plus electric refueling Conventional fuel plus battery For hybrid electric gasoline engine low NOX at all operating conditions...but high CO for all operating conditions of gasoline engine For hybrid electric diesel engine still high NOX at high speed F. Schmidt 11 11

12 Environmental benefits by synthetic fuel from methanol Summary Feed Methanol MTP COD Prearation Synthesis Carbon Source Cellulose Hemicellulose Coal Oil Waste CO2 (Wind+ Water) Methanol Olefins Gasoline CCS Fuel Low Particulate Low NOx Low CO F. Schmidt 12

13 Thank you o for your attention!

14 Reactor control to respectively produce predominantly gasoline or distillates from methanol The main difference between the gasoline and distillate t mode are higher h weighted average reactor bed temperature (WABT) C, 5.5 MPa and heavier molecular weight gasoline recycle stream for the distillate mode. Source Harandi et al. 4,899,002, F. Schmidt 14 14