A New Oxygen Combustion System for Copper Refining Furnace

Abstract

The invention discloses a novel copper finery oxy-fuel combustion system. The novel copper finery oxy-fuel combustion system comprises a fuel pipeline system, a combustion supporting gas pipeline system, a finery and a control system, the fuel pipeline system comprises a fuel pipeline for providing a fuel and a fuel regulating valve arranged on the fuel pipeline, the combustion supporting gas pipeline system comprises a pure oxygen pipeline for providing oxygen with the purity of 85-99.9% and an oxygen valve arranged on the pure oxygen pipeline, the refinery is provided with a burner, the burner is provided with a fuel inlet and a plurality of combustion supporting gas inlets positioned in the periphery of the fuel inlet, the fuel pipeline is connected to the fuel inlet on the refinery, and the pure oxygen pipeline is connected to the combustion supporting gas inlets on the refinery. The combustion system has the advantages of simple structure, full fuel combustion, great reduction of requirements of a refractory material in the finery, no increase of a cooling device or a denitration device, great saving of the production cost, and reduction of pollution to environment.

Description

technical field [0001] The invention relates to a new type of full-oxygen combustion system for copper refining furnaces, which is widely used in various copper refining furnaces, such as reverberatory furnaces, rotary furnaces, tilting furnaces and the like. Background technique [0002] At present, various copper refining furnaces such as reverberatory furnaces are widely used in the smelting of non-ferrous metals, such as copper smelting. With the tightening of international energy supply and the increasing energy prices, more and more requirements are put forward for the utilization rate of fuel in the process of copper smelting. At the same time, environmental protection requires a substantial reduction in emissions. At present, in copper refining, natural gas or heavy oil is mainly used as fuel, and natural gas is used as fuel, which greatly increases the entire operating cost. However, when heavy oil is used as fuel and air is used as supporting gas, the oxygen conten...

AI Technical Summary

Problems solved by technology

At present, in copper refining, natural gas or heavy oil is mainly used as fuel, and natural gas is used as fuel, which greatly increases the entire operating cost. However, when heavy oil is used as fuel and air is used as supporting gas, the oxygen content in the air is low, resulting in fuel in the air. During the combustion process, the combustion is insufficient, the amount of flue gas is high, and more NO will be produced during combustion. X , making it necessary to add denitrification equipment during the smelting process, which increases the operating cost

If pure oxygen is used as the conventional gas-supporting gas, in the combustion process, although the emission of flue gas is reduced, the temperature in the furnace will be too high, and cooling equipment needs to be added. High requirements, and will also greatly increase the entire operating cost, therefore, improving fuel utilization, reducing production costs, and reducing environmental pollution are the goals that are continuously pursued by those skilled in the art

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