Search results for: “direct air capture”
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MHI CCS technology: performance, costs and emissions?
MHI has deployed an amine-based CO2 capture technology, in 15 plants globally, going back to 1999. Reboiler duties are around 2.6 GJ/ton on a 10% CO2 feed. Capture rates and capture purity are high. Degradation and amine emissions are controlled, and c80-90% below MEA. CCS costs and complexities remain high. In our view, this is…
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Carbon Capture Costs at Refineries?
Refineries emit 1bn tons pa of CO2, or around 30kg per bbl of throughputs. Hence this model tests the relative costs of retro-fitting carbon capture and storage (CCS), to test the economic impacts. c10-20% of emissions will be lowest-cost to capture. The middle c50% will cost c3x more. But the final 25% could cost up…
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CO2 Storage: the top ten challenges in CCS?
This data-file tabulates the “top ten” challenges for geological storage of CO2, based on reviewing the technical literature. There is c$8-30/ton of tail-risk for a typical CO2 storage operation. 25 monitoring and measurement technologies are summarized. We conclude CCS is no ‘less risky’ than nature based solutions to climate change.
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Methanol production: the economics?
This model captures the economics and CO2 intensity of methanol production in different chemical pathways. We find exciting potential for bio-methanol and blue methanol. These are logistically simple substitutes for oil products, but with lower carbon content. Full cost breakdowns can be stress-tested in the data-file.
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Sabatier process: synthetic natural gas costs?
The Sabatier process combines CO2 and hydrogen to yield synthetic natural gas using a nickel catalyst at 300-400C. A gas price of $100/mcf is needed for a 10% IRR, energy penalties exceed 75% and CO2 abatement cost is $2,000/ton?
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Chlor-alkali process: the economics?
This data-file captures chlor-alkali process economics, to produce 80MTpa of chlorine and 90MTpa of caustic soda. Our base case requires $600 per ecu for a 10% IRR and a growth project costing $600/Tpa. Electricity is 45% of cash cost. CO2 intensity is 0.5 tons/ton. Interestingly, chlor-alkali plants can demand shift.
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Explaining Shale: Can Machine Learning Capture Complexity?
Machine learning predicts 78% of the variance in shale well productivity, suggesting $1M/well savings and 19-97% resource uplifts. This data-file presents the correlation matrix between 22 inter-related variables which co-vary with well productivity. The complexity requires “big data” approaches. We see upside from Machine Learning in shale.
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Deep blue: cracking the code of carbon capture?
Carbon capture is cursed by colossal costs at small scale. But blue hydrogen may be its saviour. Crucial economies of scale are guaranteed by deploying both technologies together. The combination is a dream scenario for gas producers. This 21-page note outlines the opportunity and costs.
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Molten Carbonate Fuel Cells: capture carbon, generate electricity?
Molten carbonate fuel cells (MCFCs) could be a game-changer for CCS, and fossil fuels. They are electrochemical reactors with the unique capability to capture CO2 from the exhaust pipes of combustion facilities; while at the same time, efficiently generating electricity and heat from natural gas. The first pilot plant was due to be tested in…
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Air quality: sulphur, NOx and particulate emissions?
The flue gas of a typical combustion facility contains c7% CO2, 60ppm of NOx, 40ppm of SOx and 2ppm of particulate dusts. This is our conclusion from tabulating data across 75 large combustion facilities, mainly power generation facilities in Europe. However, the range is broad. As a rule of thumb, gas is cleanest, biomass and…
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