Abstract: A four-axial-fins fixed bed reactor for use with calcium aluminate carbonates CO2 sorbents is provided. The four-axial-fins fixed bed reactor includes a tubular reactor and a four-axial-fins tube. The tubular reactor has a tubular reactor inner wall. The four-axial-fins tube is disposed in the tubular reactor, wherein the four-axial-fins tube includes a tube and four axial fins. The tube has a tube outer wall. An annular space is formed between the tube and the tubular reactor. The four axial fins extend along the radial direction of the tubular reactor from the tube outer wall to connect the tubular reactor inner wall, wherein the annular space is equally divided by the four axial fins.

Abstract: A sorbent for capturing CO2 is fabricated. The sorbent is pelletized and used under a medium or high temperature. The sorbent is mainly made of aluminum calcium carbonate (Ca—Al—CO3). The present invention has a controllable ratio for mixing Ca—Al—CO3 with a release agent (magnesium stearate, MgSt) and a binder (activated carbon, cement or bentonite). The sorbent has a good performance for anti-degradation under a high temperature with 100% of CO2. During 10 loops of use, 43.3˜47.5% of CO2 is captured with an initial amount up to 10 milli-moles per gram (mmol/g) and a stability ratio up to 91.2% maintained.

Abstract: A sorbent for capturing CO2 is fabricated. The sorbent is pelletized and used under a medium or high temperature. The sorbent is mainly made of aluminum calcium carbonate (Ca—Al—CO3). The present invention has a controllable ratio for mixing Ca—Al—CO3 with a release agent (magnesium stearate, MgSt) and a binder (activated carbon, cement or bentonite). The sorbent has a good performance for anti-degradation under a high temperature with 100% of CO2. During 10 loops of use, 43.3˜47.5% of CO2 is captured with an initial amount up to 10 milli-moles per gram (mmol/g) and a stability ratio up to 91.2% maintained.