Industrial gas purification apparatus; purification equipment of industrial gases including combustible gases having rich carbon dioxide; air filtering installations for industrial purposes; air purifying apparatus and machines for industrial purposes; air filtering installations for capturing carbon dioxide, including a capture unit comprised primary of flue gas coolers, absorber towers, regenerator towers, heat exchangers, blowers and pumps that captures carbon dioxide from flue gases of combustion apparatus such as gas turbine, boilers, internal combustion engine, industrial furnaces and industrial incinerators; carbon dioxide recovery equipment from flue gases of combustion apparatus such as gas turbine, boilers, internal combustion engine, industrial furnaces and industrial incinerators; carbon dioxide purifying units; desulferization plants; denitrification plants; installations and apparatus (and components therefor) for the production/ distribution/ treatment/ mixing/ liquefaction/ separation/ evaporation/ drying/ capture/ compression/ washing/ cleaning and purification of gases (in liquid or gaseous form)