The Gasification Technology in GoBiGas - SGCconference.sgc.se/ckfinder/userfiles/files/1_2_ C_ Breitholtz... · The Gasification Technology in GoBiGas Claes Breitholtz ... d p r e-p

The Gasification Technology in GoBiGas

Claes BreitholtzLead R&D engineer

and two more gasification projects

© Metso

Metso is a global supplier of sustainable technology and services

• Our customers operate in the following industries:

- Mining- Construction- Power generation - Oil and gas- Recycling- Pulp and paper

• About 29,000 employees in more than 50 countries.

• 2012 net sales EUR 7.5 billion.• Our shares are listed on NASDAQ

OMX Helsinki Ltd.

International Seminar on Gasification Gothenburg 16-18 Oct 2013 Claes Breitholtz

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© Metso

Power business line

• A forerunner in fluidized bed boilers to power plants for combustion of biomass, coal and other fuels

• A global leader in chemical recovery solutions for pulp and paper mills

- Net sales EUR 715 million in 2011- 1,900 employees worldwide- Sales and engineering offices

around the world- Production and service centers

worldwide

Tampere

Curitiba

Charlotte

Gothenburg

Main officesProduction/Service centersSales and/or engineering offices

3International Seminar on Gasification Gothenburg 16-18 Oct 2013 Claes Breitholtz

© Metso

Metso Power Wide scope of fuel-flexible power technology

Heating plants

Profilers Intelligent control valves ESD valves

Power solutions

Automation systemsGasification

Recovery boilers

Boiler plants

Automation systems

Automation Rebuilds and upgradesEnvironmental systems

Modular power plants


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Metso CFB gasifierIndustrial experience

• Götaverken- Atmospheric CFB gasification- Värö project start-up 1987

• Tampella Power- 15 MWth pressurized FB gasifier and gas cleaning- Piloting ended 1996

• Metso BFB & CFB boilers- Fluid bed technology- Project execution resources

• New gasification development- Product gas filtration tests - Dryer technology- Own process dimensioning tools


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© Metso

More value from biomass and wasteFrom Combustion to Biorefinary

heat

steam

heat

steam

Biogas

Bio-oil

Biocoal

Lignin

Gasification

Pyrolysis

Torrefaction

LignoBoost

Combustion

Combustion

Fuel

han

dlin

g an

d p

re-p

roce

ssin

g

electricity

electricity

waste

wood

peat

fossil

agro

waste

wood

peat

fossil

agro

2010

2020


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}

Steam

Biomethane

Air

Steam

Flue gas

Wood pellets

Bed material

Forest residues

Tar

Sulphur rich gas

Air preheater

Hot water

Hot water

CO2 to inert

gas system/

atm

Tar

GoBiGas


Application of Gasification to a Biorefinary

Source: GoBiGas

Gasification: Metso scope

Methanation

CombustorGasifier

Dryer

Bag filterDe-NOx

Fuel handling

Tar removal

ShiftTar removal

DryingUpgrading

Methanation

Sulphur removal

CO2-removal

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© Metso

Requirements on the gas from the gasification

• No nitrogen- Should not dilute the SNG

Indirect gasification or oxygen/steam gasification

• Clean: no tar, S, Cl ...- Life time of catalyst

Gas cleaning

• ”High” pressure needed in the methanation.Either by high pressure gasification or compression of the gas

• High content of methane is an advantage- Heat is lost in the methanation

Gasification temperature below 1000°C


CO + 3H2 + 0.04 N2 => CH4 + H2O + 0.04 N2

1% 4%

CO + 3H2 => CH4 + H2O ( H=-206 kJ/mole)

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© Metso

Selection in GoBiGas: Indirect gasification

Göteborg Energi -

GoBiGas

RepotecMetso Power

Indirect Gasification

Technology agreement

Delivery project


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Gasification Island - Overview


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Gasification in Dual Fluidized Bed

• Fuel is feed to the BFB gasifier • The gasifier is fluidized with

steam• Char in fly and bottom ash from

the gasifier is burnt in the combustor riser

• Bed material is circulated to transport heat from the combustor to the gasifier

• Fly ash from the combustion is recirculated to the gasifier


Air

Steam

Producer gas Flue gas

Fuel

GasifierC

ombu

stor

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Fuel feeding system

• Fuel: Initially wood pellets, aiming for forest residue

• Purged locked hoppers system

• Off-gas to PCC• Feeding to the bed with

cooled screw


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Gas Cleaning – Overview

• Cooling of producer gas• Dust removal in a textile filter• Removal of tars and water

solvable pollutants in an oil scrubber

• Scrubber oil and water are separated. Oil is recirculated to the scrubber and water is vaporized and used as fluidization steam.


FilterCooler Scrubber

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Combustion and heat recovery

• Combustion is made in two stages: riser & post combustion chamber.

• In addition to char also waste streams are incinerated.

• The heat of the flue gas is used to super heat the steam, preheat the air and for district heating.


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References: Repotec

• Start of construction: 2000• Start of operation: November 2001• Fuel: wood chips• Fuel Capacity: 8 MW• Electricity production: 2 MW• District Heat production: 4.5 MW• Electrical efficiency: 25 %• Total efficiency: 80 %• Operational time: 77445 h ( end 2012)• Availability gasifier: 2012 7700h/year


Güssing, Austria, CHP plant

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References: Repotec

• Start of operation: 2012• Fuel: Wood chips• Fuel Capacity: 14.3 MW• Electricity production: 5 MW• District Heat production: 6.5 MW

• Electrical efficiency: 35 %• Total efficiency: 80 %• Two gas engines and ORC for

production of electricity


Ulm, Germany, CHP plant

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CFB gasification projects

© Metso

Vaskiluodon Voima biomass gasification plant

Wet biomass

Existing PC boiler modifications and new

burners

Instrumentation, electrification and automation

Biomass receivingand pre-handling

Large-scale belt dryer CFB gasifier 140 MWfuel

Product gas

Dried biomass


• 140 MW biomass gasifier and dryer• Adjoined to the existing

560 MW coal-fired power plant• Up to 40 percent replacement of coal• 18 month from contract to operation• Total project cost < 40 M€• Start up Dec 2012

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© Metso

Lahti Energia Waste gasification for power production

• 2 x 80 MW th gasifiers• Total investment 160 M€• 250 000 tn/a SRF • Gas boiler 121 bar, 540 oC- 50 MWel & 90 MWheat

- e = 31% (net)

Old PC boiler

Waste fuel receiving & handling

Gasifierand gas cooler

Gas boiler and APC

Gas boiler and flue gas cleaningFuel handling Gasifier Gas filterGas cooling


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© Metso

Metso’s gasification solutions

Product gas for industrial kilns

• Sawdust, forest residues, fresh wood,

bark • 20 – 80 MWfuel units • Typically includes a

dryer • Dusty product gas • Also other types of

kilns possible

Product gas for power boilers

• Woody biomass, bark, peat, straw…

• Superior electricity efficiency

• (Existing) power boilers

• 50 – 150 MWfuelunits

• Typically includes a dryer

• (Gas filtering)

Product gas from waste for power

production

• Waste-derived fuel • High electricity

efficiency • Typically a new gas

boiler • Gas filtering -> clean

product gas • 50 – 100 MWfuel units

or multiple units connected to a boiler

Indirect gasification of

biofuels

• Suitable for clean biofuels

•Suitable for cases HIGH HEATING VALUE GAS is needed (SNG, refinery feed motors)


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Mesto’s gasification solutionsTechnology for biofuels and waste

Opens new possibilitiesTo utilize biofuels or waste instead of fossile fuels

Industrial furnaceso Metallurgical processeso Industrial furnaces or kilnso Lime kilnso Etc.

Partial or complete fuel change in existing plantso Increased fuel flexibilityo High electrical effeciencyo Moderate cost

High efficiency use of corrosive fuels like waste

21International Seminar on Gasification Gothenburg 16-18 Oct 2013 Claes Breitholtz

Thank You!

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The Gasification Technology in GoBiGas - SGCconference.sgc.se/ckfinder/userfiles/files/1_2_ C_ Breitholtz... · The Gasification Technology in GoBiGas Claes Breitholtz ... d p r e-p