Startup Carbon Clear introduced earlier this week that it raised $150 million in a Sequence C that gives it with a large struggle chest to proceed the event of its modular carbon seize system.
Carbon Clear has received its share of admirers, most not too long ago Chevron, which led the spherical, and BloombergNEF, which named it a BNEF Pioneer final month partially due to the startup’s small-scale method to carbon seize and sequestration (CCS).
Sometimes, the know-how is a large-scale affair. In any case, the world must remove emissions on an enormous scale, and the know-how advantages from a specific amount of scale. That’s why CCS is normally envisioned connected to huge coal- or gas-fired energy vegetation.
However there are nonetheless many smaller websites, from cement kilns to chemical vegetation, which can be at the moment wedded to fossil fuels however nonetheless should be decarbonized. These are the styles of firms that Carbon Clear pitches itself to, and the startup says that its modular method may also help polluters take care of their carbon emissions incrementally as rules ratchet up.
Essentially, Carbon Clear depends on a tried-and-true course of to strip carbon dioxide from exhaust streams. Exhaust containing carbon dioxide is shipped by way of a filter that’s wetted with an amine-based solvent. At decrease temperatures (round 50 levels Celsius, or 122 levels Fahrenheit), carbon dioxide will bind to the amines. The CO2-laden solvent is then pumped to a different container, the place it’s heated to 110 to 120 levels C (230 to 248 levels F) to launch the fuel, which is then compressed and despatched elsewhere for use or saved. Every firm has its personal amine solvent with completely different properties, and the main points of the method might range, however that’s the gist of it.
Carbon Clear CEO Aniruddha Sharma mentioned his firm’s amine solvents can cut back prices in contrast with a generally used amine by requiring much less power to warmth and by decreasing corrosion within the system. Till the corporate releases extra information, such claims might be laborious to evaluate. However based mostly on the normal sort of amine it’s utilizing, Carbon Clear is prone to see no less than a small enchancment in power use.