![Page 1: BIOFUEL B.V. 1 HTU 2000 SUCCESSFULLY USING BIOMASS TO HARNESS RENEWABLE ENERGY IN AN EFFICIENT AND COST-EFFECTIVE WAY J.E. Naber and F. Goudriaan (BIOFUEL](https://reader036.vdocuments.mx/reader036/viewer/2022062421/56649d175503460f949ed5d9/html5/thumbnails/1.jpg)
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BIOFUEL B.V.
HTU 2000
SUCCESSFULLY USING BIOMASS TOHARNESS RENEWABLE ENERGY IN AN EFFICIENT AND COST-EFFECTIVE WAY
J.E. Naber and F. Goudriaan(BIOFUEL BV)
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BIOFUEL B.V.
PERSPECTIVES FOR ENERGY FROM BIOMASS
1990 2040
ENERGY DEMAND, EJ/a 350 1000
FOSSIL FUELS, „ 255 480
RENEWABLES „ 80 >400
HYDROPOWER „ 20 50 WIND „ - 70
SOLAR „ - 130
BIOMASS „ 60 >200
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BIOFUEL B.V.
POTENTIAL FOR ENERGY FROM BIOMASS
FROM POTENTIALLY AVAILABLE 250 EJ/YRLAND AREA @ 15 TON(DB)/HA.YR (ENERGY FARMING ON 10 HA)
BIOMASS RESIDUES 70 EJ/YR (FORESTRY, WHEAT, RICE, SUGAR CANE, CORN, ETC.
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BIOFUEL B.V.
HISTORY OF HTU
1982 - 1988 Process R&D, Shell Laboratory, Amsterdam
1994 - 1997 Technical-Economic evaluation of HTU technology
Nov 1997 - July 2000:PROCESS DEVELOPMENT PROJECT EET-1
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BIOFUEL B.V.
WHAT IS HTU ?
Conditions: 300 - 350 C; 120 - 180 barreaction time 5 - 20 minutesliquid water present
Feedstocks: All types of biomass, domestic, agricultural and industrial residues, wood
Also wet feedstocks, no drying required
Chemistry: Oxygen removed as Carbon Dioxide
Products 45 Biocrude (%w on feedstock, dry basis)25 Gas (> 90% CO2)20 H2O10 dissolved organics (e.g., acetic acid, methanol)
Thermal efficiency: 70 - 90 %
o
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BIOFUEL B.V.
HTU Product
Biocrude Heavy organic liquidNot miscible with waterOxygen content 10 - 18 %wLHV 30 -35 MJ/kg
Applications
Biocrude as such: (co)combustion in coal- and oil- fired power stations
After upgrading (hydrogenation): premium diesel fuel; kerosene luboil base stock chemicals feedstock (cracker)
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BIOFUEL B.V.
• Direct combustion as a liquid (replacement of fossil fuels)
• Combustion as a solid fuel (cofiring with coal)
• Emulsified fuel (type “Orimulsion”)
• Replacement of charcoal
• Upgraded product
HTU PRODUCT FLEXIBILITY
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BIOFUEL B.V.
HTU PROCESS BLOCK SCHEME
Pumpsystem
HEATINGSECTION
HTUREACTOR
PRODUCTSEPARATION
Gas
Furnace
Cat. DeNOx
Wastewater
Anaerobicdigestion
demineral.
Biogas
Cleanwater
concentratedminerals sol’n
Light biocrude
Hvy biocrude
Flue gas
To Upgrading(HDO)
CHP
power station
electr., heat
electr.
Feedstock
Pretreat-ment
Gas turbine, CC
electricity
air
electr.
ExternalFuel
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BIOFUEL B.V.
Block scheme of HTU pilot plantBlock scheme of HTU pilot pant
Biomass
10-20 kg/hr (db)
High pressure pump
Preheater/Reactor 1
Reactor 2 Cooler
Gas /liquid
separator
CO2
Condensor
Pressure reducer
1 barbiocrude/water collection
storage
gases
330 °C
180 bar
storage
Cooler
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BIOFUEL B.V.
THERMAL EFFICIENCY
Definition:
th = (LHV of biocrude output) * 100 %(LHV of feed) + (LHV from external fuel)
For present process design:
th = 55.62 * 100% = 74.9 % 72.98 + 1.3
(Theoretical maximum for this case is 78.6 %)
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BIOFUEL B.V.
Upgrading of biocrude by HDO
• Principle of catalytic Hydrodeoxygenation has been demonstrated• Upgrading cost compensated by higher product value• Diesel fraction has excellent ignition properties• Potential applications:
• Transport fuel • Kerosine• Fuel in high-efficient gas turbine• Feedstock for chemicals (via ethylene cracker)• Etc. etc.
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BIOFUEL B.V.
HDO process scheme
Biocrude
Hydrogen
HDOreactorsystem
Fractionator
(fromHTU)
electricity
NH3, H2S
C1-C4 gas
H2O
Kerosine
Gas oil
>370oC residue
To refininery pool
Air transport
Diesel fuel forRoad transport
Lubricating oil;chemical feedstock
Naphtha
Separatorsection
Recycle gascompressor
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BIOFUEL B.V.
COST OF BIOCRUDE AND COST OF AVOIDING ONE TON OF CO2 ; EFFECT OF FEEDSTOCK PRICE
0
1
2
3
4
5
6
7
8
-1 0 1 2 3
Feedstock price, $/GJ
Bio
cru
de
cost
, $/
GJ
First Plant
Coal (2 $/GJ) / Crude Oil (12 $/bbl) Replacement
Future plant
0
+ 40 $ pe
r ton
CO
2 avoid
edenergy farmingrest products
- 20
+ 20
+ 60
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BIOFUEL B.V.
0
2
4
6
8
10
-2 -1 0 1 2 3
Biomass HTU Feedstock Price, $/GJ
Total Product Cost, $/GJ
First Plant
Premium Diesel ex crude oil of 25 $/bbl
Future plant
rest products energy farming
PRODUCTION OF TRANSPORTATION FUELCost of HTU plus HydroDeOxygenation
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BIOFUEL B.V.
HTU R&D PROGRAM
GO / NO GO ITEMS• Pressurizing• Continuous integrated operation of pilot plant
CRITICAL ITEMS• Heating - up• Oil/water separation• Product properties / applications• Effluent treatment
DATA FOR DESIGN• Phase equilibria• Physical properties, esp. at reactor/separator conditions
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BIOFUEL B.V.
Process Development
Work in autoclaves, • 10 ml, 1 liter, 2 liter• Testing of feedstocks and process conditions
Continuous pilot plant• capacity 20 kg/hour (dry basis)• commissioning 1 July 1999• first product prepared: 24 November 1999
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BIOFUEL B.V.
Development project EET-1
Mission: Design data for demonstration plant,validated in continuous pilot plant
Time period: 1 November 1997 - 31 July 2000
Cost and funding:Subsidy 3 M $(Dutch Min. of Economic Affairs, EET programme)
Stork E&C (Now Jacobs) 1Shell Nederland 1TNO, BTG, Biofuel 1Total 6 M $
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BIOFUEL B.V.
PROJECT ACTIVITIES
1. Autoclave experiments - TNO2. Reactor Engineering - BTG3. Waste water treatment - TNO4. Process Modeling - TNO (Tech Univ Delft)5. Feedstock characterisation - BTG6. Feed introduction equipment - Biofuel7. Pilot plant design & contruction - TNO (Contractor)8. Pilot plant operation - TNO9. Product research - BTG10. Materials selection - Biofuel (Contractor)11. Commercial design & cost - Jacobs Engineering Nederland12. Operational project support - Biofuel13. Business development - Biofuel14. Chemical analyses - TNO15. Project management & coordination - Biofuel
PROJECT ACTIVITIES
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BIOFUEL B.V.
PROCESS DESIGN CASE STUDY
Basic process design by Jacobs Engineering Nederland
Process scheme, Mass & Heat Balances: ASPEN PLUS flowsheeter
All disciplines involved, incl. layout
Case study:Feedstock: Sugar beet pulp, 22 %w dry matterIntake Capacity: 130,000 tonnes/year (dry basis)
Focus on heat integration, thermal efficiency
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BIOFUEL B.V.
RESULTS OF EET-1 PROJECT
• Pilot plant construction completed• Pilot plant operation: - process principles verified
- most initial problems solved- 200 kg biocrude produced
• Pressurizing of feedstock successfully proven with commercial prototype pump• Data on thermodynamics and phase equilibria obtained; model operational• Waste water treatment routes defined• Product: various applications explored• Process design and cost estimation completed• Fundamental research to start: NWO – Japan project.
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BIOFUEL B.V.
EET-2 PROJECT:FINAL PROCESS DEVELOPMENT
Mission: Extended operation of pilot plant with commercial feedsProduct application development
Time period: 2002 – 2005
Cost and funding:Subsidy: 3.6 MFlDutch Government, EET programme
TNO + BTG + Biofuel: 1.2St. Shell Research 0.5To be decided 1.9Total project cost 7.2 MFl
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BIOFUEL B.V.
COMMERCIAL HTU DEMONSTRATION PLANT (1)
Study by Jacobs Engineering Nederland, 2000
Location: Large Waste Processing Company, The Netherlands
Feedstock: Organic Wet Fraction (ONF) of domestic wasteCapacity: 81,300 tonnes of ONF per year
62,500 tonnes of washed ONF+ per year(= 25,000 tonnes per year dry basis)
Production: 14,470 t/yr Biocrude (incl ash) = 10,630 t/yr DAFCombustion in power plant gives 5.5 MWe
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BIOFUEL B.V.
COMMERCIAL HTU DEMONSTRATION PLANT (2)
BASIS for ECONOMICS
Capital: Washing plant 13 M NflHTU plant 37Total capital 50 M Nfl
Availability: year 1: 40 % (of 8000 h/yr) year 2: 60 % year 3: 80 %years 4-15: 100 %
Maintenance and overhead: 4% and 1% of capital/yrOperation: Worst case
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BIOFUEL B.V.
COMMERCIAL HTU DEMONSTRATION PLANT (3)
Total capital required 50 M Nfl
CO2 reduction plan: minus 7.5 M NflEWAB: minus 3.0Net capital: 39.5 M Nfl
Effect of VAMIL minus 13.8 M NflEffect of EIA minus 5.5 M NflNet Investment 20.2 M Nfl
TOK: Loan of 20.2 Mfl @ 7% interest, repayment in 10 years
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BIOFUEL B.V.
COMMERCIAL HTU DEMONSTRATION PLANT (4)
NPV, M NflLicense fee (p.m.)TOK (techn ontwikkelings krediet) (21.6) over first 10 yearsOperating cost washing plant (24.8)Operating cost HTU plant (30.2)Biocrude sales 10.4 75% of equiv. coal price
Fee for ONF 80.7 (= 100 Nfl/ton ONF)Total project NPV 14.5 NPV=0 if ONF fee= 77 Nfl/ton
Effect of REB buy-back 32.2NPV incl REB 46.7 NPV=0 if ONF fee= 39 Nfl/ton
NPV = Net present value of project over 15 years, discounted cash flow with 7% interest rate
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BIOFUEL B.V.
Technology Development Path( S - curve)
Scientific Base/ Explanatory
ProcessScouting
Techn./Econ.Feasibility
ProcessDevelopment
CommercialPrototype
FullyCommercial
Next S- curve
Improvedscientific base
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BIOFUEL B.V.
NEXT S - CURVE
Focussed fundamental studies on principles
• Chemical and physical characteristics of biomass feedstocks in relation to hydrothermal conversion (Wageningen Agricultural University)
• Organic chenmistry: Reaction paths and kinetics with representative components and conditions(Delft University of Technology)
• Reaction engineering models/ complex kinetics(Twente University)
• Thermodynamics(Delft University of Technology)
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BIOFUEL B.V.
HTU-related work in Japan
NIRE: Dr. Shin-ya YokoyamaMs. Dr. Tomoko Ogi
Publications since 1985
Upgrading of biomass residues and sewage sludgeFor sewage sludge: continuous bench scale unit, 15 kg/h, ca. 1988
process development unit, 5 tons/day
Cooperation with:Japan Organo Co., Ltd,
Dr. Akira Suzuki; contacts since 1991Ebara corp.Institute for cellulose Industry, Bandung Indonesia, publication 1998
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BIOFUEL B.V.
NWO – Japan Project
NWO = Dutch Government Agency for Fundamental Scientific Research
Commemoration of 400 years contacts Japan – the Netherlands
Multimillion Treaty on fundamental research on renewable energy.
Netherlands: 4 out of 20 projects are on HTU fundamentals
Japan: Involvement of NIRE
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BIOFUEL B.V.
AVAILABILITY OF ORGANIC RESIDUES IN THE NETHERLANDS
0
1000
2000
3000
4000
5000
-6 -4 -2 0 2 4 6
wood waste
food ind. waste
verge grasswood cuttings
beet leaves
houshold waste
potato leavesstraw
energy farming(NL)
Cumulativekton/year (db)
Price ( $/GJ )
Gasification,PyrolysisHTU
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BIOFUEL B.V.
HTU OPPORTUNITIES 1 - The Netherlands
• Industrial organic waste and residues 1.8 Million tons/a (db)• Organic household waste 1.1 ,,• Poultry litter 0.5 ,,• Manure 2.0 ,,
(combination with anaerobic digestion)
TOTAL 5.4 Million tons/a (db)
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BIOFUEL B.V.
HTU OPPORTUNITIES 2 - Europe
• Agricultural / Industrial Residues 200 Million tons/a (db)(Source: Eurec agency, 1996)
• Short-term niches for HTU:- Olive Oil Industry 3 - 5 Million tons/a (db)
- Organic household waste 26 ktons/a (db) per (from centralized waste separation) 250,000 inhabitants
- Residues from sugar and beer production.
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BIOFUEL B.V.
HTU OPPORTUNITIES 3 - World
• Agricultural and industrial residues 4,000 Million tons/a (db)(Source: “Renewable Energy; sources for (approx. 70 EJ/a)
fuels and electricity”, 1993)
• Future organic household waste 800 Million tons/a (db)(own tentative estimate)
• Short-term niches for HTU:- Organic household waste- Bagasse (> 100 Mtons/a)- Forestry residues from existing plantations- Coir dust