Search results for: “direct air capture”
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Industrial gas separation: swing producers?
Swing Adsorption separates gases, based on their differential loading onto zeolite adsorbents at varying Pressures. The first PSA plant goes back to 1966. Today, tens of thousands of PSA plants purify hydrogen, biogas, polymers, nitrogen/oxygen and possibly in the future, can capture CO2? This 16-page note explores the technology, costs, challenges, companies.
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Exhaust gas recirculation in gas power: the economics?
This data-file explores an alternative design for a combined cycle gas turbine, re-circulating exhaust gases after combustion, in order to facilitate CO2 capture. Costs and operating parameters are summarized from recent technical papers. Even with EGR, it will be challenging to decarbonize a gas turbine for less than $100/ton.
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Afforesting deserts: energy economics?
We model the economics of afforesting deserts by desalinating and distributing sufficient water for trees to grow. The best economics are achievable in the Permian, with 10% IRRs at $30/ton CO2 prices. But the energy economics cannot work to green the world’s most hyper-arid deserts, such as the Sahara.
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Additive manufacturing: costs of 3D-printed products?
The costs of 3D printed products are estimated between $10-100/kg in this data-file, in order to earn a 10% IRR on constructing and running an additive manufacturing machine, net of labor costs, energy costs, maintenance and materials. Economic costs, energy intensity and CO2 intensity vary as a function of the material and can be stress-tested…
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Waste heat recovery: heat exchanger costs?
Industrial heat comprises around 20% of global CO2 emissions, but around half of all heat generated may ultimately be wasted. Hence, this model simplifies the economics of using a heat exchanger to recover waste heat. A CO2 price above $50/ton would greatly accelerate waste heat recovery projects.
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Renewable diesel: the economics?
Our base case is that a US renewable diesel facility must achieve $4.6/gallon sales revenues (which is c$200/bbl) as it commercializes a product with up to 75% lower embedded emissions than conventional diesel. Similarly, a bio-diesel facility must achieve $3.6/gallon sales on a product with 60% lower embedded emissions.
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US shale: the quick and the dead?
It is no longer possible to compete in the US shale industry without leading digital technologies. This 10-page note outlines best practices, process by process, based on 500 patents and 650 technical papers. Chevron, Conoco and ExxonMobil lead our screens. Falling from the leader-board is EOG, whose long-revered technical edge may have been eclipsed.
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CO2 disposal in geologic formations: the economics?
Costs of disposing of CO2 are extremely variable and project-dependent, ranging from $5-50/ton, with a base case of $22.5/ton. This is the disposal price needed to earn a 10% post-tax IRR, transporting, injecting and monitoring CO2 in the subsurface.
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Geothermal energy: costs and economics?
Geothermal energy costs are modelled from first principles in this data-file. LCOEs of 6c/kWh are available in geothermal hotspots. Outside of the hotspots, enhanced geothermal heat can cost 2-14c/kWh-th for a 10% IRR on $500-5,000/kW-th capex, while a rule of thumb is that geothermal electricity costs 5x geothermal heat.
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Global CCS Projects Database
Over 400 CCS projects are tracked in our global CCS projects database. The average project is 2MTpa in size, with capex of $600/Tpa, underpinning over 400MTpa of risked global CCS by 2035, up 10x from 2019 levels. The largest CO2 sources are hubs, gas processing, blue hydrogen, gas power and coal power. The most active…
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