WUT-Biogas_01

8/8/2019 WUT-Biogas_01

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CCGASGAS

Technologies forTechnologies for BiomethanisationBiomethanisationofofBiogenicBiogenic ResidualsResiduals

andand RenewableRenewable RawRaw MaterialsMaterials


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Provider of TechnologyProvider of Technology

SinceSince 2006 SFC Umwelttechnik GmbH has2006 SFC Umwelttechnik GmbH has hadhad aa projectproject

relatedrelated cooperationcooperation withwith oneone ofofthethe leadingleading GermanGerman

specialistsspecialists forfor biomethanisationbiomethanisation plantsplants i.ei.e..

EnviConsultEnviConsult GmbH /GmbH / BiocomplettBiocomplett GmbHGmbH

(Norbert Schwarting,(Norbert Schwarting, M.ScM.Sc.).)


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WhatWhat isis biogasbiogas ??

HowHow isis biogasbiogas producedproduced ??

UtilizationUtilization ofoffermentationfermentation remaindersremainders

BiogasBiogas outputsoutputs

FeedFeed--inin remunerationremuneration

ServicesServices

fromfrom farmerfarmer toto energyenergy economisteconomist


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What is Biogas ?

65%

33,5%

1,5%

Methan Kohlendioxid Schwefelwasserstoff

Biogas from liquid manure

Biogas aus Nawaro

Biogas is a gas mixture consisting of

50 - 70 % methane - CH4

(an inflammable gas contained in

natural gas to the amount of 96 % )

30 50 % carbon dioxide - CO2

< 2 % hydrogen sulfide - H2S

traces of hydrogen and other gases

46,5%

0,5%

53,0%

Methan Kohlendioxid Schwefelwasserstoff


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HowHow isis BiogasBiogas ProducedProduced ?? MicroMicro--organismsorganisms degradedegrade organicorganic mattermatter underunder anaerobicanaerobic

conditionsconditions.. In natureIn nature thisthis processprocess cancan bebe foundfound inin thethe stomachsstomachs ofofruminantsruminants oror

inin swampsswamps..

ThisThis naturalnatural principleprinciple isis simulatedsimulated in ain a biomethanisationbiomethanisation plant.plant.

DuringDuring anaerobicanaerobic fermentationfermentation biogasbiogas isis producedproduced fromfrom::

LiquidLiquid manuremanure

PlantPlant residualsresiduals inin agricultureagriculture andand renewablerenewable rawraw materialsmaterials

Organic wastes like leftovers, stale food, kitchen wastes, wastes offood production / processing and beverage industries


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Biogas a Metabolic Product of Anaerobic Degradation of

Organic Matter

Polymerc Substrates

(Carbohydrates, Fats, Proteins)

Fragments und Dissolved Polymers

H2 CO2 Org. Acids Acetic Acid Alcohols

Acetic Acid(Acetate),H2,CO2

Methane CH4 und Carbondioxide CO2

HydrolysisHydrolysis phasephase

AcidificationAcidification phasephase

AcetogenicAcetogenic PhasePhase

MethanogenicMethanogenic PhasePhase

1.1. StageStage

2.2. StageStage

22--stagestage

ProcessProcess

11--stagestage

ProcessProcess

E iC lt G bH


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EnviConsult GmbH

ApplicationApplication ofofBiomethanisationBiomethanisation

BakeriesBakeries

SugarSugar factoriesfactories

ChocolateChocolate productionproduction

SweetsSweets productionproduction

MilkMilkprocessingprocessingIcecreamIcecream productionproduction

SlaughterhousesSlaughterhouses andand meatmeat processingprocessing

FishFish processingprocessing

StarchStarch industryindustry

CookingCooking oiloil productionproductionFruitFruit andand vegetablevegetable processingprocessing

PotatoPotato processingprocessing

DistilleriesDistilleries // BreweriesBreweries

HideHide glueglue andand gelatingelatin productionproduction

YeastYeast productionproduction

Food andFood and semisemi--luxuryluxury foodfood industryindustry

AnimalAnimal FarmingFarming

PlantPlant breedingbreeding

HorticultureHorticulture

AgriculturalAgricultural industryindustry,,AgricultureAgriculture, and, and

HorticultureHorticulture


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Technology PortfolioTechnology Portfolio

CSTRCSTR ProcessProcess ((standardstandard processprocess))

((continuouslycontinuously fedfed andand stirredstirred mesophilicmesophilic reactorreactor))

SUP SchwartingSUP Schwarting UhdeUhde ProcessProcess ((twotwo--stagestage processprocess forfor thethe

fermentationfermentation ofofespeciallyespecially energyenergy richrich rawraw substratessubstrates))

Production ofProduction ofbiomethanebiomethane ((methanemethane enrichmentenrichment andand feedingfeeding

intointo thethe naturalnatural gasgas distributiondistribution systemsystem))


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CSTRCSTR-- ProcessProcess

The CSTRThe CSTR ProcessProcess ((ContinuousContinuous StirredStirred TankTankReactorReactor)) isis thethe standardstandard processprocess forfor thethe

continuouscontinuous mesophilicmesophilic ((oror thermophilicthermophilic))

fermentationfermentation ofoforganicorganic substratessubstrates in ain acontinouslycontinously fedfed andand completelycompletely stirredstirred reactorreactor..

TheThe advantageadvantage of CSTRof CSTRisis thatthat itit allowsallows for highfor high

solidsolid contentscontents bothboth ofofsubstratesubstrate andand liquorliquor inin thethereactorreactor ((dependingdepending onon thethe typetype andand processingprocessing ofof

thethe rawraw substratesubstrate).).


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ExampleExample of a CSTRof a CSTR-- PlantPlant

supposingsupposing::

-- 10,000 t / a liquid10,000 t / a liquid manuremanure

-- 26,000 t / a solid26,000 t / a solid organicorganic residualsresiduals

forfor thethe productionproduction of at least 1.0of at least 1.0 MWMWelel electricelectricenergyenergy


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Biogas Power Plant ca. 1.0 MWelectr Scheme Pre-treatment

Mixing

Vessel

Hygienization

Mixed Substrate64,000 t/a

Recirculate

28,000 m3/a

Leftovers

10,000 t/a

Liquid manure

10,000 t/a

Corn silage

8,000 t/a

Stale Food

6,000 t/a

Extracted

grease

2,000 t/a

Recirculate

28,000 m3/a

Solids

Dosing Station


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Biogas Power Plant ca. 1.0 MWelectr Scheme Biogas Plant

Mixed Substrate

64,000 t/a

Recirculate

28,000 m3/a

Methanisation

Output

Biogas Plant

59,800 t/a

Biogas

3.830,000 m3/a

Recirculate

28,000 m3/a


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Biogas Power Plant 1.0 MWelectr

SchemeScheme: Gas: Gas-- und Substrateund Substrate ProcessingProcessing

Gas Storage

Degassing Vessel

Gas-Processing

Solids

Separation

Cogeneration

Plant

Heat- Energy BPP

10,600 MWh/a

Solids11,800 t/a

Electric Energy

8.000 MWh/a

Filtrate-Recirculate

Remainder Filtrate

20,000 m3/a

Biogas

3.830,000 m3/a

Output

Biogas Plant

59,800 t/a

Recirculate

28,000 m3/a


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Utilization of Fermentation Remainders

DirectDirect AgriculturalAgricultural

UtilizationUtilization

AgriculturalAgricultural

UtilizationUtilizationSolid / LiquidSolid / Liquid

SeparationSeparationSolidsSolids

FiltrateFiltrate

Output BiogasOutput Biogas

PlantPlant

ca. 5%DSca. 5%DS

BTLBTL

RecirculateRecirculate

AgriculturalAgricultural

UtilizationUtilizationLiquidLiquid FertilizerFertilizer


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Biogas Output from Selected Substrates

m3/ kg VSS

LiquidLiquid manuremanure fromfrom cattlecattle

LiquidLiquid manuremanure fromfrom pigspigs

ChickenChicken manuremanure

CornCorn silagesilage

GrainGrain cerealscereals

Full plantFull plant silagesilage -- RyeRye

GrassGrass silagesilage BeetBeet leavesleaves

SpentSpent grainsgrains

Apple /Apple / winewine raperape

LeftoversLeftovers

ExtractedExtracted greasegrease MarketMarket wasteswastes

0 0,1 0,2 0,3 0,4 0,5 0,6 0,7


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Comparison of Electric Power Output per Ton

7575--505010 %10 %LiquidLiquid manuremanure fromfromcattlecattle

500500--30030034 %34 %CornCorn silagesilage

300300--12012018 %18 %MarketMarket wasteswastes

400400--15015025 %25 %StaleStale foodfood

500500--32032034 %34 %GPSGPS-- ryerye

400400--15015018 %18 %LeftoversLeftovers

1.4001.400--1.0001.00070 %70 %ExtractedExtracted greasegrease

-- 60060030030035 %35 %GrassGrass silagesilage

35035040 %40 %BiowastesBiowastes

Power Output kWh / t FMPower Output kWh / t FMDSDS

%%

FM =FM = FreshFresh MaterialMaterial


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SUPSUP

SchwartingSchwarting UhdeUhde ProcessProcess

twotwo--stagestage processprocess ((mesophilicmesophilic // thermophilicthermophilic))

forfor substratessubstrates of highof high energyenergy densitydensity andand solidssolids

contentcontent increasedincreased biogasbiogas yieldyield atat shortershorter reactorreactor

residenceresidence time (time (typicallytypically 1010 daysdays))


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FlowFlow SchemeScheme TwoTwo--StageStage FermentationFermentation

Biogas

Digester Imesophilic

Digester IIthermophilic

Primary clarifier

Final clarifier


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ComparisonComparison

ConventionalConventional ProcessProcess SUP Schwarting UhdeSUP Schwarting Uhde ProcessProcess

Biogas

Endreinigung

ConventionalProcess

SUP Schwarting-UhdeProcess

Residence time VSS Degradation Rate Biogas Production

SUP S i l Di I l


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SUP Special Digester Internals


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BIOMETHANE PRODUCTIONBIOMETHANE PRODUCTION

ProcessProcess forfor thethe purificationpurification ofofrawraw biogasbiogas andandmethanemethane enrichmentenrichment inin naturalnatural gasgas qualityquality


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Biogas Processing in Natural Gas Quality Biomethane

biologicalbiological

gasgas desulfurizationdesulfurization

CHCH44--EnrichmentEnrichment

z.B. DWAz.B. DWA ProcessProcess

rawraw biogasbiogas

desulfurizeddesulfurized

biogasbiogas

naturalnatural gasgas distributiondistribution systemsystem

biomethanebiomethane > 95 % CH> 95 % CH44

BHKWBHKW

CMGCMG --

CompressedCompressed

MethaneMethane GasGas

pressurepressure tanktank ororbottlesbottles

CGHCGH22

CompressedCompressed

GaseousGaseous HydrogenHydrogen

withwith reformerreformer

forforfuelfuel cellcell


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UtilizationUtilization ofofBiomethaneBiomethane

inin thethe gasgas distributiondistribution systemsystembyby anan externalexternal consumerconsumer

inin pressurepressure tankstanks ororgasgas bottlesbottles

fuelfuel for gasfor gas motorsmotors vehiclevehicle andand stationarystationary

motorsmotors

viavia steamsteam reformerreformer

forforthethe productionproduction ofofcompressedcompressed gaseousgaseous

hydrogenhydrogen usedused inin fuelfuel cellscells

Transport of biogas in China

What about gas in bottles ?

R fR f Li (Li t (EE t))


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ReferenceReference List (List (ExcerptExcerpt))

Plant for the Anaerobic Treatment of Wastewater


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Plant for the Anaerobic Treatment of Wastewater

from a Vegetable Processing Plant

SUP Schwarting Uhde Process

Liquid Manure Treatment Plant Gritz (Germany)


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Liquid Manure Treatment Plant Gritz (Germany)

SUP Schwarting Uhde Process


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SUP - Plant Leonberg

Biomethanisation Plant Friedrich (Germany)


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Biomethanisation Plant Friedrich (Germany)

Biomethanisation Plant Finsterwalde


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Biomethanisation Plant Finsterwalde

(Germany)


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Biomethanisation Plant Alteno (Germany)


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Biomethanisation Plant Karstdt (Germany)


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SFC Umwelttechnik GmbHSFC Umwelttechnik GmbH

StartStart--upupOptimizationOptimization

FinancingFinancing

OperationOperation

EcologicalEcological UtilizationUtilization

of Energyof Energy ResourcesResources

ConstructionConstruction

BiomethanationBiomethanation PlantsPlants

EUEUEmission TradeEmission Trade

BiogasBiogas ProcessingProcessing

BiomethaneBiomethane

Documents

WUT-Biogas_01