Cooling system for a metallurgical furnace

A cooling system for a metallurgical furnace including:

• a cooling circuit with an inlet and an outlet for cooling water;
• a return line connecting said outlet to said inlet so as to form a closed cooling circuit;
• at least one circulation pump in said closed cooling circuit for circulating cooling water therethrough;
• an emergency feed line with an emergency feed valve connected to said inlet of said cooling circuit, said emergency feed valve opening in case of a power failure;
• and
• an emergency overflow with an emergency overflow valve at the highest point of said closed cooling circuit, said emergency overflow valve opening in case of a power failure, so that said closed cooling circuit becomes an open cooling circuit with an atmospheric pressure discharge at its highest point;
• a pressure vessel means connected to said emergency feed line, said pressure vessel means containing a certain volume of emergency water and being pressurized by a pressurizing gas, so that, in case of a power failure, an emergency water flow establishes through said open cooling circuit in the direction of said emergency overflow valve;
• reservoir means located higher than said pressure vessel, for collecting cooling water flowing through said open emergency overflow valve;
• and
• an emergency water return line with an emergency water return valve connecting said reservoir means to said pressure vessel means.

A cooling system for a metallurgical furnace including:

• a cooling circuit with an inlet and an outlet for cooling water;
• a return line connecting said outlet to said inlet so as to form a closed cooling circuit;
• at least one circulation pump in said closed cooling circuit for circulating cooling water therethrough;
• an emergency feed line with an emergency feed valve connected to said inlet of said cooling circuit, said emergency feed valve opening in case of a power failure;
• and
• an emergency overflow with an emergency overflow valve at the highest point of said closed cooling circuit, said emergency overflow valve opening in case of a power failure, so that said closed cooling circuit becomes an open cooling circuit with an atmospheric pressure discharge at its highest point;
• a pressure vessel means connected to said emergency feed line, said pressure vessel means containing a certain volume of emergency water and being pressurized by a pressurizing gas, so that, in case of a power failure, an emergency water flow establishes through said open cooling circuit in the direction of said emergency overflow valve, wherein said pressure vessel means comprises a pressure vessel that is located at a certain height above ground.

A cooling system for a metallurgical furnace including:

• a cooling circuit with an inlet and an outlet for cooling water;
• a return line connecting said outlet to said inlet so as to form a closed cooling circuit;
• at least one circulation pump in said closed cooling circuit for circulating cooling water therethrough;
• an emergency feed line with an emergency feed valve connected to said inlet of said cooling circuit, said emergency feed valve opening in case of a power failure;
• and
• an emergency overflow with an emergency overflow valve at the highest point of said closed cooling circuit, said emergency overflow valve opening in case of a power failure, so that said closed cooling circuit becomes an open cooling circuit with an atmospheric pressure discharge at its highest point;
• a pressure vessel means connected to said emergency feed line, said pressure vessel means containing a certain volume of emergency water and being pressurized by a pressurizing gas, so that, in case of a power failure, an emergency water flow establishes through said open cooling circuit in the direction of said emergency overflow valve, wherein said pressure vessel means comprises a first pressure vessel and a second pressure vessel that are connected in parallel to said emergency feed line.