CARBON DIOXIDE ABSORBER AND METHOD FOR RECOVERING CARBON DIOXIDE IN SMOKE BY USING THE SAME

• Main Author: ABE TOSHIO
• Format: Patent
• Language: English; Japanese
• Published: 09.06.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; DISPOSAL OF SOLID WASTE; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; RECLAMATION OF CONTAMINED SOIL SOIL; SEPARATION; THEIR RELEVANT APPARATUS; TRANSPORTING

To provide a method for recovering carbon dioxide in air or exhaust by using coal ash and insolubilizing heavy metals and harmful substances in the coal ash.SOLUTION: A solidification and insolubilization agent containing magnesium oxide, gypsum, dolomite, ferrous sulfate, fused phosphate, and olivine (Mg2SiO4, Fe2SiO4) is added to the coal ash recovered from combustion residues and exhaust of a coal combustion device, and they are mixed and solidified into a carbon dioxide absorber, which is brought into contact with a carbon dioxide-containing gas.SELECTED DRAWING: Figure 2 【解決すべき課題】石炭灰により空気あるいは排ガス中の二酸化炭素を回収するとともに石炭灰中に含まれる重金属や有害物質を不溶化する方法を提供すること【解決手段】酸化マグネシウム、石膏、ドロマイト、硫酸第一鉄、熔成リン肥、及びカンラン石（Mg2SiO4、Fe2SiO4）を含む固化・不溶化剤を、石炭の燃焼装置の燃焼残滓及び排ガスから回収される石炭灰に添加混合し固化した二酸化炭素吸収材と、二酸化炭素含有ガスを接触させる。【選択図】図２