MILENA – OLGA - IGCCMost Efficient Energy from Waste Technology

Presented byMartin van ‘t Hoff

May 19th 2015

Royal Dahlman

• Technology company, established in 1886

• Serving the Oil & Gas and Power market world wide

• Developing gasification and syngas purification

systems in cooperation with ECN since 2001.

• License Holder of MILENA and OLGA technology,

which are patented by ECN

• Developing complete biomass & waste fuelled IGCCs

in cooperation with its associated project developer

Royal Dahlman

FCC Slurry Oil Filtration Package on transport

2

Waste to Energy through Gasification

3

+ Waste is a valuable fuel resource, the efficient utilization is renewable

+ Gasification is chopping molecules

+ That process is not perfect, the raw product gas (syngas) gas contains tars

+ Clean syngas is a fuel

Incineration vs gasification

4

+ Gasification is cleaner and more efficient than incineration

+ MILENA is even more efficient, the carbon to gas ratio is 100%

+ OLGA cleans the gas and makes advanced utilisation possible

5

Waste to energy

6

Waste to energy

MILENA – OLGA Most Efficient EFW

MRFThe GRP facility receives

RDF/SRF bales from Transwaste, but also has

MRF functionality for flexibility and robustness.

Two shredders, a sieve and magnet belts

MILENAThe MILENA scope includes flue gas treatment, coolers

and the cyclones

OLGA - AQUAOLGA (green) captures tars and dust and recycles these

to the MILENA. Downstream OLGA (blue)

water is condensed out and components like HCL and

NH3 are removed

Power BlockA Solar/Caterpillar Taurus60 gas turbine, heat recovery

steam generator and a steam turbine that also receives steam from the

MILENA coolers

7

The MILENA gasifier

MILENA an indirect gasifier

• Both reactors in one refractory lined reactor vessel

• 100% carbon to gas ratio

o Resulting in carbon free ash;

this residue stream is lesser, cleaner and safer

o Resulting in a 5 - 15% higher cold gas efficiency

typically 75 - 85% excluding tars and NH3

• Separate flue gas exhaust, no or minimized nitrogen

dilution of the product gas

o Compared to air blown gasification a 3 to 4 times

higher heating value.

o Compared to oxygen/steam blown gasification a

much higher efficiency (no ASU parasitic), while still

having 60% more heating value

o Very suitable for gas turbines & catalytic upgrading

8

OLGA tar removal

Portugal: CFB gasifier, OLGA gas cleaning,

Caterpillar 3516A+ gas engine

OLGA, a tar/oil based gas scrubber

• OLGA captures tars with high efficiencies, well within specification for gas engines, gas turbines, fuel cells and catalytic processes (SNG, FT-diesel)

• OLGA does not convert the tars by using electricity or combusting part of the product gas. OLGA captures tars and recycles these to the gasifier

• OLGA has low pressure drop and only consumes some electricity for pumps and tracing < 100 kW for a 9000 kW gross plant (<1%)

• OLGA does not change the main gas composition: high energy carriers like methane, ethene and the bulk of the benzene and toluene stay in the product gas

• OLGA is able to handle very high tar loads, up to 50 g/Nm3, allowing us to optimize the MILENA towards CH4 production and efficiency

9

Typical gas compositions

Improved gas quality

Typical applicability Engine: Wobbe > 4, Gas Turbine: Wobbe > 12

Product gas composition

downstream water condensation

(saturated at 30-35 °C)

Specification Sand bed Sand bed Sand bed Sand bed

CO 12.5 28.0 22.0 24.7

H2 11.3 21.6 14.2 15.9

CO2 13.1 29.7 15.8 17.7

O2 0.0 0.0 0.0 0.0

H2O 6.0 6.0 6.0 6.0

CH4 2.9 8.6 15.3 17.2

N2 51.2 0.6 10.9 1.0

CxHy (>CH4 & < toluene) 1.7 3.7 13.9 15.6

Wobbe (LHV, MJ/Nm3) 5.1 12.0 21.8 24.5

Clean Product GasCFB

Air fluidisation

MILENA

Air fluidisation (riser)

MILENA

Steam fluidisation (riser)

CFB

oxygen/steam fluidisation

10

ETI: Searching the best EfW technology

Worlds most robust and efficient energy from waste technology contest

• The British ETI selected Royal Dahlman and two British companies to compete

in this challenge. These three competitors, selected out many applicants from

all over the world, received funds to support waste gasification tests, a FEED

study and project development work.

• In the coming months the winner will be announced, which will receive an ETI

investment for the commercial demonstration plant.

• Primary goals:

- Commercial deployment scale 5-20 MWe,

- Overall net energy form waste efficiency > 25%

- Availability > 80%

11

MILENA-OLGA-IGCC net efficiency

RDF/SRF to electricity net efficiency

12

MILENA-OLGA-IGCC net efficiency

RDF/SRF to electricity net efficiency

13

Note: The total Energy from waste efficiency, as defined by the ETI, including MRF parasitic and energy content of the fine wet fraction (to digester is approximately 2% lower than the RDF/SRF to energy efficiency

MILENA-OLGA-IGCC efficiency

RDF/SRF to electricity net efficiency

14

The Grimsby Renewable Power facility

Project Statistics

Project location Moody Lane, Grimsby, Lincolnshire, UK

Plant design capacity (flexibility) 70 to 110% of nominal capacity

Plant commercial feedstock Flexible, designed for RDF - SRF - Biomass

Waste input (at MRF) 60,000 to 80,000 tpa (based on typical MRF operation)

Plant RDF/SRF input 37,000 tpa SRF or 47,000 tpa RDF

Plant input energy 22-23 MW (LHV) at nominal capacity

Plant gross electricity generation 9,4 MW

Plant net electricity sales 7.6 MW

15

Grimsby site

GRP facilityMILENA-OLGA-Taurus-60 7 MWe IGCC plant

GRP facilityRed outline is lease for 7 MWe plant

GRP facilityRDF receipt & storagebuilding

16

The MILENA-OLGA package

17

MILENA gasifier

OLGA-AQUA gas cleaning

Gas turbine

Cooling tower

Control room / cabinet

Steam turbine

The MILENA-OLGA-IGCC package

18

Tests on Refuse Derived Fuel so farClean Gas flare

(downstream OLGA)Raw Gas flare

(downstream gasifier)

19

Thank You!

Martin van ‘t Hoff

www.royaldahlman.com/renewable