Abstract: A process and a plant for cleaning furnace gas includes utilizing one or more sensors to continuously monitor one or more parameters indicative for an expected temperature peak in the blast furnace gas flow. The gas flow is then passed through a conditioning tower. In case the measured parameter exceeds a predefined limit value, a coolant, such as water, is sprayed into the blast furnace gas flow in the conditioning tower. Subsequently the flow of blast furnace gas passes one or more filter stations.

Abstract: A process and a plant for cleaning furnace gas includes utilizing one or more sensors to continuously monitor one or more parameters indicative for an expected temperature peak in the blast furnace gas flow. The gas flow is then passed through a conditioning tower. In case the measured parameter exceeds a predefined limit value, a coolant, such as water, is sprayed into the blast furnace gas flow in the conditioning tower. Subsequently the flow of blast furnace gas passes one or more filter stations.

Abstract: A process and a device for treating a flow of furnace gas with a pressure of more than 1 bar flowing through a channel. A powder agent, such as a powder comprising alkali reagents, such as lime, and/or absorbents, such as activated coal, is injected under an overpressure into the furnace gas flow via an injector which is positioned centrally within the channel. The powder agent may be fluidized. The pressure for injecting the powder may be adjusted by controlling the volume of fluidization gas vented via a venting outlet.

Abstract: A process and a device for treating a flow of furnace gas with a pressure of more than 1 bar flowing through a channel. A powder agent, such as a powder comprising alkali reagents, such as lime, and/or absorbents, such as activated coal, is injected under an overpressure into the furnace gas flow via an injector which is positioned centrally within the channel The powder agent may be fluidized. The pressure for injecting the powder may be adjusted by controlling the volume of fluidization gas vented via a venting outlet.

Abstract: Process and device for cleaning furnace gas includes flowing in a main flow direction (A) the furnace gas passes an array of bag filters. Filtered furnace gas having passed the filter bags, is partly returned via one or more nozzles which are moved along downstream ends of the bag filters. Each bag filter is passed at least once by at least one nozzle during a cycle. A nozzle passing a bag filter blows filtered furnace gas in a backflow direction (B) through said bag filter. The backflow direction is opposite to the main flow direction.

Abstract: An apparatus for the removal of gasses from a number of electrolysis cells, including a suction duct for each cell, each suction duct being connected to a central manifold with a gas treatment center and a central suction fan. A flow restriction device is provided in each suction duct. One or more additional ductworks are provided. Each additional ductwork is for one or more suction ducts. Each additional ductwork has a branch for each suction duct, the branch being connected to the suction duct between the electrolysis cell and the flow restriction device, which one or more branches are connected to a booster duct in which an on/off valve is present. One or more booster ducts are connected to a booster manifold connected to the central manifold. A booster fan is provided in the booster manifold. A method for performing an electrolysis process is also disclosed.

Abstract: An apparatus for the removal of gasses from a number of electrolysis cells, including a suction duct for each cell, each suction duct being connected to a central manifold with a gas treatment centre and a central suction fan. A flow restriction device is provided in each suction duct. One or more additional ductworks are provided. Each additional ductwork is for one or more suction ducts. Each additional ductwork has a branch for each suction duct, the branch being connected to the suction duct between the electrolysis cell and the flow restriction device, which one or more branches are connected to a booster duct in which an on/off valve is present. One or more booster ducts are connected to a booster manifold connected to the central manifold. A booster fan is provided in the booster manifold. A method for performing an electrolysis process is also disclosed.