Technology

Hot Lime™

A High Temperature CO2 Capture Material

Hot Lime™ is strong and porous composite pellet of limestone and metals which can be formulated to accomplish many different high temperature solid gas reactions in simple fixed bed reactors which are applicable to numerous industries

Beyond our first application – clean, green CO2 & Heat for greenhouses – which commercialized by Aplenty , we are open to collaborations to develop tailored Hot Lime solutions for high temperature gas cleanup, H2 production w/ CO2 capture, Sorption Enhanced Water Gas shift reaction, Energy Storage and many others.

We have a demonstration system of our first technology delivering clean CO2 to a commercial greenhouse near Taupo, NZ.

Hot Lime Labs Process for Greenhouses: How it Works

Step 1: The Charge Cycle (CO2 capture)

  1. Wood is combusted in a special burner called a “gasifier”
  2. Gases (wood gas, aka syngas, aka producer gas) produced during the combustion process flow through a large vessel containing patented Hot Lime pellets
  3. The lime pellets absorb CO2 like a sponge, and allow all other unwanted (clean and low particulate) gases to pass through and up the chimney
  4. Heat from the gas is extracted and sent to the greenhouse heating tank

Step 2: The Discharge Cycle (CO2 release)

  1. Air is blown into the system, causing a reaction in the lime pellets
  2. The lime pellets release CO2
  3. Heat from the gas is extracted and sent to the greenhouse heating tank
  4. CO2 is fed into the greenhouse

Charge cycle (step 1) starts again.

The Power of the Pellet

The power of the Hot Lime CO2 capture system lies in the patented Hot Lime™ pellets. The pellets have very high CO2 capture capacity and act like a sponge. Our pellets make the Hot Lime units robust, compact and less costly than competing CO2 capture systems.

During the charge cycle, these pellets absorb up to 30% of their volume in CO2.

During discharge, when hot air is applied to the system, this causes a reaction between the iron and Calcium Carbonate, resulting in the pellets releasing CO2.

 

Partners

Hot Lime Labs partners with many suppliers to achieve our goals.

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