Process Technology Manager
12:15 - 12:45
Wednesday, 18 September 2019
T3.4 Natural Gas Decarbonisation by Efficient Hydrogen Generation with Carbon Capture
The need to minimise climate change, by reducing carbon emissions, has led to increased use of natural gas worldwide. Natural gas is a suitable “bridging fuel” for at least the next two to three decades whilst other methods of large-scale decarbonised energy generation are developed. Renewable energy requires storage and does not help meet heating demands, or provide raw material for chemicals, as natural gas does. However, whilst continued use of natural gas is assured, it must focus on decarbonisation. This will be best achieved by reforming gas to hydrogen with carbon capture at source. It has been estimated that in the UK alone over US$200 billion could be saved with this approach compared to low-carbon alternatives.
Hydrogen production and carbon capture should be considered as an integrated system to minimise cost and to produce low carbon hydrogen at large scale. Hydrogen production by gas reforming is well established via Steam Methane Reforming (SMR) and Auto Thermal Reforming (ATR). However, captured carbon dioxide has traditionally been produced at low pressure, so being unsuitable for storage. Carbon capture from reforming needs an improved, lower-cost approach.
ATR enables lower cost for decarbonised hydrogen production than SMR does and can be built at larger scale. The latest ATR technology enables carbon capture of over 95%, especially when integrated with new, highly efficient carbon capture technology which provides pure, dry, high pressure carbon dioxide, suitable for storage or utilisation. Increased hydrogen production also means that this ATR and carbon capture technology can have a carbon footprint less than half that achievable with SMR.
This paper will discuss the latest progress and innovations in production of large-scale decarbonised hydrogen as a critical and cost-effective energy solution with extensive worldwide application.