ENGINEERED PROCESS OF MANUFACTURING CALCIUM ALUMINATE CARBONATES FOR MEDIUM-HIGH TEMPERATURE CO2 CAPTURE

摘要

An engineered process of manufacturing a carbon capturing agent calcium aluminum carbonate Ca—Al—CO₃ includes steps of mixing, solid-liquid separation, drying and extrusion, crushing and conveying, and calcined molding. The acid bath of Ca⁺² and Al⁺³ is mixed with the alkaline bath of Na₂CO₃ and NaOH while stirring to form slurry which are then subject to solid-liquid separation to obtain a filtrated cake. The filtrated cake is place into a drying and extrusion device to obtain granular material. The granular material is placed in a conveying and crushing equipment to obtain a powder material. The powder material is calcined at furnace for forming a Ca—Al—CO₃, which is nano-layered composite with high porosity. Thereby, the preparation of a solid sorbent can be scale up under systematically controlled with yield of at least batches of kilograms used in medium-high temperature (400˜800° C.) CO₂ capture.