Method and arrangement for treating process gas flowing from a pyrometallurgical furnace into a waste heat boiler

A method for treating process gas flowing from a furnace space of a pyrometallurgical furnace into a waste heat boiler that is in fluid communication with the furnace space of the pyrometallurgical furnace at a connecting aperture,

• comprising
• a providing step for providing the region of the connecting aperture between the furnace space of the pyrometallurgical furnace and the waste heat boiler with a gas blowing means for blowing gas into process gas flowing from the furnace space of the pyrometallurgical furnace into the waste heat boiler,
• a blowing step for blowing gas with the gas blowing means into process gas flowing from the furnace space of the pyrometallurgical furnace into the waste heat boiler,
• providing the gas blowing means in a lower region of the connecting aperture in the providing step,
• blowing by means of the gas blowing means provided in the lower region of the connecting aperture gas into the process gas from below into process gas flowing from the furnace space of the pyrometallurgical furnace into the waste heat boiler in the blowing step, and
• blowing in the blowing step gas with the gas blowing means from below into process gas flowing from the furnace space of the pyrometallurgical furnace into the waste heat boiler in the connecting aperture between the furnace space of the pyrometallurgical furnace and the waste heat boiler.

An arrangement for treating process gas flowing from a furnace space of a pyrometallurgical furnace into a waste heat boiler that is in fluid communication with the furnace space of the pyrometallurgical furnace at a connecting aperture,

• wherein the arrangement comprises the pyrometallurgical furnace having the furnace space, the waste heat boiler, and the connecting aperture between the pyrometallurgical furnace and the waste heat boiler, and wherein
• the region of the connecting aperture between the furnace space of the pyrometallurgical furnace and the waste heat boiler is provided with a gas blowing means for blowing gas into process gas flowing from the furnace space of the pyrometallurgical furnace into the waste heat boiler,
• the gas blowing means is provided in a lower region of the connecting aperture,
• the gas blowing means provided in a lower region of the connecting aperture is configured for blowing gas into the process gas from below into process gas flowing from the furnace space of the pyrometallurgical furnace into the waste heat boiler, and
• the gas blowing means is configured to blow gas from below into process gas flowing from the furnace space of the pyrometallurgical furnace into the waste heat boiler in the connecting aperture between the furnace space of the pyrometallurgical furnace and the waste heat boiler.