Method and device for purifying exhaust gases containing sulphur oxides from internal combustion engine by means of a multi-stage adsorption process

A method and a device intended to purify pollutants from an exhaust gas flow of an internal combustion engine operated with sulphur containing fuel, in particular of a ship internal combustion engineoperated with heavy fuel oil, are provided. Exhaust gas flow is in contact with a solid adsorption agent of the adsorber in a first step and binding in particular acid pollutants, which comprise sulphur dioxide and sulphur trioxide. The exhaust gas flow is then guided by a second stage of the adsorber realising fine purification of the exhaust gas flow. The adsorption agent of the second stage isused in the first stage as an adsorption agent. 本发明涉及借助多级吸附方法净化来自内燃机的含有硫氧化物的废气的方法和设施。根据本发明设置的是，在第一级中让废气与吸附器的固态的吸附介质接触，在其中，尤其是使包括二氧化硫和三氧化硫的酸性有害物质化合，随后将废气流导引通过吸附器的第二级，在第二级中，进行对废气流的精细净化，并且将第二级的吸附介质用作第一级内的吸附介质。