Waste to Energy EISENMANN biogas systems Focus: Utilizing Anaerobic Digester Outputs

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1 Waste to Energy EISENMANN biogas systems Focus: Utilizing Anaerobic Digester Outputs February 3rd, 2012

2 Introducing EISENMANN EISENMANN is a leading international supplier of general finishing environmental technology material handling & conveyor systems process and high-temperature technology EISENMANN specializes in... plant engineering highly flexible systems integration market and technology leader for individual components and entire systems service provider with a broad service offering 2

3 Introducing EISENMANN EISENMANN offers reference installations worldwide custom and modular solutions global services detailed system and process solutions top quality and reliability EISENMANN facts & figures established in Stuttgart, Germany in locations worldwide US location Crystal Lake, IL since late 70 s Global workforce of approx. 2,800 employees More than 90 Biogas facilities built to date 3

4 Introducing EISENMANN EISENMANN locations Crystal Lake (Chicago) Boeblingen (Headquarters) Holzgerlingen Moscow Stafford (Birmingham) Shanghai Puebla Barcelona Saronno (Milan) Paris São Paulo Cruzeiro Chennai Thane (Mumbai) Pune Delhi 4

5 Introducing EISENMANN EISENMANN Business Units Automotive Systems Surface finishing Body shell conveyor systems Final assembly lines General Finishing Paint shops for metal parts Paint shops for plastic parts Paint shops for wooden parts New materials Environmental Technology Exhaust air purification Waste water treatment Waste disposal BIOGAS PLANTS Ammunition disposal Process & High Temperature Technology Preteatment and coating systems Hightemperature technology Firing lines for ceramics Heat treatment Carbon fiber ovens Conveyor Systems Electric monorail systems Electric floorbased systems Power & Free conveyors Peripheral conveyor systems Service Customer service Spare parts management Plant renewal Advisory service Full service & BOT models 5

6 Principles of biogas production How is Biogas created 1 Hydrolysis 2 Acidogenesis Acidification phase 3 Acetogenesis Acetic acid formation 4 Methanogenesis Methane formation Composition of Biogas Component Fraction Pre-treatment Anaerobic fermentation (in 4 phases) Output Digested substrate Methane 40-75% Carbon dioxide 25-55% Water vapor 0-10% Trace gases 0-5% Substrate input to pre-treatment Substrate input to anaerobic fermentation Agricultural fertilizer 6

7 Principles of biogas production technologies Wet fermentation plants Properties Low dry matter content in the digester: Max. Total Solids content 15% cogeneration unit thermal energy through addition of water, slurry or recirculated liquid electrical energy Biogas Distinctive features Simple plant technology process heat Limited applications Large digester volumes solid organic substrates / waste digester fertilizer pump sludge tank storage 7

8 Principles of biogas production technologies High solids fermentation plants Properties High dry matter content in the digester: Total solids content 15% and up Distinctive features Robust, durable plant technology All substrates can be utilized without the need biowaste conditioning cogeneration unit separator compost electrical energy thermal energy of slurrying main digester pump compost fertilizer liquid substrates final storage tank EISENMANN specializes in high solids fermentation plants 8

9 Focus Utilizing Digester Outputs Biogas Plant Biogas Digestate 9

10 Utilizing biogas output Biogas Boiler Biogas-fueled boilers to generate steam Functions Generation of steam for process heat and heating for industrial purposes 10

11 Utilizing biogas output Combined heat and power (CHP) plant Biogas-driven combustion engine powers generators to produce electricity. Functions Generation of electricity to be fed into a micro or public utility power grid Waste heat heat created from engine cooling and exhaust used to heat the digester, adjacent buildings, greenhouses, industrial processes, etc. 11

12 Utilizing biogas output Biogas upgrading Upgrading of Biogas to Biomethane (natural gas quality) Biogas upgrading (methane content > 95%). Functions Clean air Feeding into gas network Use as vehicle fuel Regenerative thermal oxidation plant Biomethane 12

13 Utilizing biogas output Gas Conditioning Pipeline CNG vehicle fuel Biogas Bio methane 55% CH 4 96% CH 4 40% CO 2 13

14 Utilizing digester outputs Screw press separator or centrifuge dewatering of digestate The screw shaft presses digestate against the counterpressure plate, the filtrate and press water are removed via a screen. Functions Separation of solids from the digestate Press cake compost (30-35% total solids) Press water liquid fertilizer (3-10% total solids) Digestate Filtrate Screen Screw shaft Press water Dewatering zone Dewatered press cake Counterpressure plate 14

15 Utilizing digester outputs Digestate drying system alternative treatment of digestate A belt dryer increases the dry matter content of the digestate. Reduces transportation costs Utilizes waste heat from the CHP plant Produces bedding and soil amendments 15

16 Utilizing digester outputs Animal Bedding Press cake following separation is dried and utilized on farm as animal bedding. Functions Provide low pathogen bedding Significant offset of bedding cost Reuse of already available material 16

17 Utilizing digester outputs Composting facility alternative treatment of digestate Post-composting ensures proper maturation to grade A compost. Functions Production of mature, stable compost for agriculture, gardening and/or landscaping Economic benefit by sale of compost Diversion of nutrients from local watershed 17

18 Utilizing digester outputs Post digester / final storage tank Stores the liquid soil amendment after separation, to be used as agricultural, nutrient rich fertilizer. Vertical digester with submersible agitators Double-membrane roof for gas storage Functions Storage prior to utilization (winter month) Bridge the periods in which no biogas is consumed Exploitation of residual gas potential 18

19 Utilizing digester outputs Utilization of the digestate Liquid digestate produced can be utilized as valuable organic soil amendments that can replace fossil fuel based fertilizers(containing nitrogen, phosphorus, potash and sulfur) Land application on fields and grassland Reblending with compost EISENMANN is currently developing a process for treating digestate to produce dry fertilizer and dischargeable water 19

20 EISENMANN high solids fermentation plant Liesberg, Switzerland 20

21 Liesberg - Plant parameters Substrate Organic waste from brown bins Yard waste Cattle manure Material flows Substrate input: 9,000 tons per year Biogas yield: 150m3/h (95 scfm) Technical data Electrical capacity: 330 kw Thermal capacity: 1.1 MM BTU Digestate production: 7,300 tons per year 21

22 Advantages of EISENMANN biogas plants Why Anaerobic Digestion... Effective manure management tool Reduction of odors Reduction of Green House Gas emmissions Creating of economic benefit by creating renewable energy and bedding Reduction of fecal bacteria High degree of automation Modular systems Extremely easy to operate Application of digestate rather than raw manure Preserves local watershed (less nutirent loading on local drainage basin 22

23 Contact EISENMANN Corporation Environmental Technology / Biogas Thomas F. Gratz 150 E. Dartmoor Drive Crystal Lake, Illinois thomas.gratz@eisenmann.com Internet: