Korea Institute of Geoscience and Mineral Resources

Lg Chem, Ltd

Kyung Won Ryu

Kyung Hyun Kim

Hyun Kyou Ha

Tae Jung Kim

Joong Chul Lim

Young Nam Jang

Suk Soo Kim

Myung Gyu Lee

Myung Kyu Lee

Joong Chul Lom

Jin Kee Lim

Suk Soo Lim

Disclosed herein is an eyebrow coil jacket, a heat control apparatus of a reactor using the eyebrow coil jacket, and a method for manufacturing the heat control apparatus of the reactor. According to the present invention, it is possible to provide an eyebrow coil jacket that is capable of increasing the heat control area of the reactor even when applied to a large-sized reactor so that a heat control amount of the heat control apparatus is improved 20% more than when a half pipe coil is used, a heat control apparatus of a reactor using the eyebrow coil jacket, and a method for manufacturing the heat control apparatus of the reactor.

Eyebrow coil jacket, a heat control apparatus of a reactor using the eyebrow coil jacket, and a method for manufacturing the heat control apparatus

Provided is a recycling method for producing calcite and ammonium sulfate having a high purity of at least 95% and generated by means of a carbonation reaction for fixing carbon dioxide inside the crystal structure of a mineral, and in which waste gypsum is reacted with carbon dioxide, which is a greenhouse gas, such that the carbon dioxide is fixed as a stable mineral, and high-purity calcite and ammonium sulfate are produced as resultant products.

Production method for high-purity calcite and ammonium sulphate by using gypsum

Provided is a fixation method of carbon dioxide. The method includes a) grinding waste gypsum to become 200&#x2dc;300 mesh; b) performing reaction by supplying mixed gas while mixing the ground waste gypsum with aqueous ammonia, and c) separating solid from liquid in the manufactured slurry by centrifugation and drying separated solid and liquid portions with calcite and ammonium sulfate, wherein the mixed gas is formed of nitrogen and carbon dioxide, and the carbon dioxide provides carbon dioxide fixation method containing 5&#x2dc;25 wt %. When carbon dioxide is fixed by using waste gypsum, reaction efficiency is remarkably high. The fixation method makes more than 95% of supplied carbon dioxide fixed. Also, provided is an economical method that disposes carbon dioxide as a disposal target without its separation, refinement and liquefaction processes, to thereby remarkably reduce the entire process and costs for processes.

Economical sequestration of carbon dioxide by the mixed gas

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Daejeon, South Korea

Kyung Won Ryu