A SASOL PERSPECTIVE ON SUSTAINABILITY AND POWERFUELS€¦ · South African ops: Majority of...

Copyright ©, 2019, Sasol

A SASOL PERSPECTIVE ON

SUSTAINABILITY AND POWERFUELS

2Copyright ©, 2019, Sasol

Secunda currently accounts for >80% of Sasol’s global GHG

emissions

% of total scope 1 and 2 GHG emissions

Source: Sasol

SasolburgSecunda Mining

8.0%83.3% 1.1%

South African ops:

Majority of mitigation

efforts will be in

Secunda

European ops:

1.2%

North American ops:

5.2% 1.2%

Other ops:


Case for change

“The scientific

evidence for

warming of the

global climate

system is

unequivocal.” IPCC 5th Assessment Report

2014

• The world is experiencing significant climate change impacts.

• We acknowledge that we have a role to play and reducing greenhouse

gas emissions from our operations is necessary.

• Our approach hinges on three pillars:

Our climate change response forms part of our broader sustainability journey

TRANSFORMour coal-based

operations

REDUCEour emissions through

efficiency & cleaner

energy sources

SHIFTour portfolio towards less

carbon-intensive

businesses

Sasol is committed to reduce it’s greenhouse gas emissions


All CO2 emissions at Secunda come

from 5 key sources…

6MT

20MT

56MT

1MT

8MT6MT 2MT

9MT

22MT3MT

Steam +

energy

emissions

Eskom

imports

RectisolSteam

for drives

Gas

turbine

Steam for

electricity

Flaring Steam for

gasifiers

Benfield Total

emissions

Products

Gas

Turbine

Eskom

Electricity

Gas

BoilersFine CoalProcess Block

Major emissions sources

Electricity

Sub-

station

Steam

1

Gas

production

Flaring

5a

Rectisol

5b

Benfield

5c

STG

Utility BlockMajor emissions sources

3a

Gas

Coarse

Coal

42

Distribution of emissions at Secunda (MT per Year)

'Reduce' levers can only partially

address Sasol's emissions sources

3b

1 2 3a 4 3b 5b 5c

Reduce levers

Transform levers

5a

Reduce via Renewable energy,

process & energy efficiency

levers

Transform by

sourcing Green H2

or H2 rich feedstock


To achieve our reduction target, 'Transform' levers are

required to change the 'chemistry' of our process

Which requires greener sources of Hydrogen OR Hydrogen-rich feedstock

• Coal is also used to make Hydrogen

• Due to low H2 composition – a lot of coal needed for small amount of H2

• CO2 intensity of Water-Gas Shift (WGS) reaction to turn coal into H2

very high

Coal feedstock

[C : H~0,7]

Coal has an

inherently low

Hydrogen

composition

Product slate

Product slate is

Hydrogen rich

[C : H>2]

[ CO + H2O → H2 + CO2 ]

Hydrogen

needs to be

added to

feedstock

Coal Water Hydrogen

Carbon

Dioxide

Source renewables-based (Green)

Hydrogen

Source Hydrogen rich feedstock:

Change feedstock to gas


The standard Gas-to-Liquids process and typical

Fischer-Tropsch (FT) based products

Oxygen

and

Copyright ©, 2019, Sasol and Haldor Topsoe

LPG

GTL naphtha

GTL diesel

GTL KeroseneDrilling fluids

Paraffins

Base oils

Sasol and Topsøe has joined forces to provide technology solutions to the market

https://www.google.co.za/url?sa=i&rct=j&q=&esrc=s&source=imgres&cd=&ved=0ahUKEwi_1duRqJnTAhWD0xQKHa0rBvUQjRwIBw&url=https://stateofgreen.com/en/profiles/haldor-topsoe&psig=AFQjCNF_oeiVrCBw1ie9qBFCTIJWWOD9BA&ust=1491893934350091



Kerosene

Co LTFT - Low Temperature

Fischer-Tropsch

Synthesis Gas can

originate from

multiple potential

feedstocks

Sasol’s FT technology can process

synthesis gas generated from multiple

sources if the syngas is

• sufficiently low in poisons,

some cases may require

cleanup steps

• In the appropriate H2/CO

ratio range, some cases may

require adjustment

• Green Hydrogen

• CO2

• Refuse gasification

• Biomass gasification

• Electric reforming

• Solar reforming


Sasol Low Temperature Fischer-Tropsch (LTFT)™

Process

Sustainably produced Jet Fuel or Kerosene is critical for the de-carbonization of the aviation industry




Benefits of Synthetic Paraffinic Kerosene (SPK) - 1

Emissions benefits:

High H/C ratio and very low

levels of sulphur and aromatics

ensure a more efficient and

cleaner-burning combustion

environment

T63

Test

Engine

Data taken from Bester & Yates, GT 2009 - 6033Copyright ©, 2019, Sasol and Haldor Topsoe




Benefits of Synthetic Paraffinic Kerosene (SPK) - 2

Additional benefits:

High H/C ratio ensures a more efficient and

cleaner-burning combustion environment –

also observed reduction in contrail formation

(ECLIF)

High thermal stability as shown by JFTOT

break points

Jet Fuel Thermal Oxidation TesterData taken from Bester & Yates, GT 2009 - 6033





Synthesis gas generation


Synthesis gas

generation








Green syngas & H2 generation

Topsoe eSMR technology

● Novel electrical steam methane reforming

technology

● Significant power consumption reduction vs.

electrolysis

Topsoe Re-Shift™ technology

● CO2 reforming to CO rich syngas

Novel green syngas and H2 generation for FT

technology and product upgrading

eSMR demonstration plant employed to

produce 700 kg/day Biogas to MeOH plant

(DK)


2




Together Sasol and Haldor Topsoe can supply

technologies to produce fuels sustainably from a

multitude of feedstocks


Low Temperature

Fischer-Tropsch™

Process

Product Upgrading

Synthesis gas








’92-’951990

Lab and

pilot scale

Idea stage

‘97-’00

First catalyst

plant

FT1,

Netherlands

2008

Commercial

Scale up &

trials

2011 20102002‘92-97

Production of

Alumina support

material

2006

Second catalyst

plant

FT 2,

Netherlands

Third catalyst plant

FT 3, South Africa

ORYX GTL

Start-up

Sasol’s FT Cobalt Catalyst – at the heart of the process

2014

EGTL

Start-up

2020

UzGTL

Start-up

(planned)

Development history


FT1 and FT2 Catalyst Plants in De Meern in The Netherlands (Dedicated production units for the production of Sasol GTL catalyst.

BASF as a toll manufacturer for Sasol GTL catalyst)

Manufacturing Facilities


Wholly owned catalyst manufacturing plant in Sasolburg, South Africa (FT3)

Manufacturing Facilities

A new era for Sasol

Confidential

16

copyright reserved, 2019, Sasol Ltd, Sasol

Sasol FT Cobalt Catalyst

Selectivity

Mechanical

Strength

Activity

FT Cobalt Catalyst

Speciality Slurry-bed Fischer-Tropsch (FT) catalyst utilized to produce high demand,

premium Gas-to-Liquids (GTL)

Key p

erf

orm

ance

para

mete

rs

Grow

Co FT Catalyst

sustainability

Sasol can provide high performance, high quality, tailor made catalyst solutions to the industry

A new era for Sasol

Confidential

17

copyright reserved, 2019, Sasol Ltd, Sasol

Sasol is keen to work with industry to find low carbon solutions for the future

• Potential demonstration opportunities

• CO2-rich process streams from Secunda facility combined with hydrogen produced

from renewable energy and electrolysis

• CO2-rich process streams from Secunda facility combined with steam reforming

integrated with renewable electricity

• Sasol could supply Cobalt based FT-catalyst into suitable applications anywhere in

the world, converting syngas generated from other CO2 and green hydrogen

• Other opportunities

• Sasol could potentially participate in technical reviews to assist other players in the

Global Alliance Powerfuels.

• Hybrid solutions, drawing on the strengths of both the traditional GTL technology

offering and green hydrogen or excess CO2, could potentially provide attractive

solutions.

A SASOL PERSPECTIVE ON SUSTAINABILITY AND POWERFUELS€¦ · South African ops: Majority of...

Documents

Transcript of A SASOL PERSPECTIVE ON SUSTAINABILITY AND POWERFUELS€¦ · South African ops: Majority of...