What is it?
Decarb Technologies has developed a unique proprietary and patented process for capturing CO2 from post-combustion processes. The solvent also has the propensity to capture CO2 from ambient air also!!
The unique process and the solvent used, decreases energy consumption by about 40% and system operating costs by more than 30% compared to existing technology and processes.
On the left is an actual image of the prototype built
Three degrees of separation
Three degrees of separation
Three degrees of separation
90%+: Decarb’s patented CO2 solvent has captured 90%+ of CO2 from landfill gases. We expect that it would be the same from industrial production sites versus the typical 60%-75%.
30%-45% less energy to operate: Decarb’s system leverages a patented operational process that harnesses the workflow of a disruptive design that reduces the ener
90%+: Decarb’s patented CO2 solvent has captured 90%+ of CO2 from landfill gases. We expect that it would be the same from industrial production sites versus the typical 60%-75%.
30%-45% less energy to operate: Decarb’s system leverages a patented operational process that harnesses the workflow of a disruptive design that reduces the energy required to capture CO2 between 30% and 45% versus existing CO2 capture systems.
25% less solvent: Decarb’s system requires 25% less chemical solvent to operate its system and capture CO2 than most in-situ chemical solvent-based CO2 capture systems.
How does it work?
Three degrees of separation
Three degrees of separation
Chemical Absorption of CO2
A number of methods are available for removal of acid gases including CO2 from product gas streams. Some of the more commonly used methods are chemical solvents, physical solvents, membranes, and cryogenic fractionation.
Chemical absorption with amines is one CO2 capture technology actively explored because they c
Chemical Absorption of CO2
A number of methods are available for removal of acid gases including CO2 from product gas streams. Some of the more commonly used methods are chemical solvents, physical solvents, membranes, and cryogenic fractionation.
Chemical absorption with amines is one CO2 capture technology actively explored because they can increase the solubility of the CO2.
The strong binding between CO2 and the sorbent molecules is also one of the causes for high energy requirement for solvent regeneration.
Chemical solvents, like amines, are usually used as aqueous solutions, either by themselves or as mixtures, and with or without catalysts. Monoethanolamine (MEA) is used as a 15-20% solution in water, diethanolamine (DEA) as a 20-30% solution in water, and N-methyl diethanolamine (MDEA) as a 30-50% solution in water. If a cost-effective non-thermal pathway can be used to desorb CO2 and regenerate the amines, the extraction of CO2 from low-pressure raw gas streams would be more economically viable.
A major limitation of using MEA as a sorbent is its high heat of absorption for CO2. Secondly, the concentration of MEA used is at 15-20%; this means energy has to be applied to also heat the water solution in the stripper.
Water is needed for the absorption reaction of CO2, because water enables the formation of bicarbonates, which then preferentially react with the amines exothermically. During desorption of the CO2and thermal regeneration of the amines, the high specific heat of the water carries a considerable energy penalty, and the use of expensive heat exchanger systems to optimize heat balances is needed.
An amine attached to a water soluble polymer backbone, can improve the purity of the stream subsequently released into the environment, as well as alleviate the need for some additional processing thereby also improving the efficiency of the process.
Several sterically hindered amines have been examined and it is found that some hindered amines can reduce the heat of regeneration by 20%. Sterically hindered amines use geometrical effect to weaken the binding between the CO2and amine molecules.
Our new class of solvents that have the high absorption capacity of the alkanolamines, but the low energy regeneration capability of physical solvents is desirable and a solution.