Elevator furnace nitrogen purification cycle utilization device and process

Abstract

The invention provides an elevator furnace nitrogen purification cycle utilization device. The device comprises an elevator furnace, a gas purification device and a gas storage tank; the elevator furnace comprises heating mantles and a plurality of furnace seats, each of the furnace seats is provided with furnace pipes; the furnace pipes comprise a first furnace pipe, a second furnace pipe, and athird furnace pipe, the heating mantles may be arranged outside the first furnace pipe, the second furnace pipe, and the third furnace pipe correspondingly, the input ends of the first furnace pipe, the second furnace pipe and the third furnace pipe are connected with a first gas transmission pipeline, and the output ends of the first furnace pipe, the second furnace pipe and the third furnace pipe are connected with one end of a second gas transmission pipeline; and the other end of the second gas transmission pipeline is connected with the gas purification device, the other end of the gas purification device is connected with the gas storage tank, the other end of the gas storage tank is connected with a third gas transmission pipeline, and the output end of the third gas transmission pipeline is connected with the first gas transmission pipeline. An elevator furnace nitrogen purification cycle utilization process is simple and convenient to operate and high in universality, automatic operation can be realized, and the problem that nitrogen and energy consumption are high during an annealing process of a traditional elevator furnace can be solved.

Description

technical field [0001] The invention relates to the technical field of nonferrous metal processing, in particular to a bell furnace nitrogen purification and recycling device and process. Background technique [0002] At present, in the annealing process of copper alloy coils, in order to overcome the oxidation of copper alloy coils during annealing at 500-530°C and obtain a uniform and clean outer surface, bell furnaces are usually used to anneal copper alloy coils, and during the annealing process It is first protected by pumping air, and then filled with a certain amount of nitrogen. During the rolling or coil drawing process of the cold working process of the coil, a certain amount of high-viscosity lubricant needs to be used between the pipe and the mold. Although the subsequent degreasing treatment, there will still be a certain amount of lubricant residue. The coil annealing process After the medium lubricant is heated, a small amount of oil gas and carbon dust will ...

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Problems solved by technology

During the rolling or coil drawing process of the cold working process of the coil, a certain amount of high-viscosity lubricant needs to be used between the pipe and the mold. Although the subsequent degreasing treatment, there will still be a certain amount of lubricant residue. The coil annealing process When the medium lubricant is heated, a small amount of oil gas and carbon dust will be generated

In the annealing process of the prior art or when the furnace is out of the furnace, the used nitrogen gas containing oil gas and carbon dust in the furnace of the annealing furnace is directly discharged into the atmosphere, which not only wastes nitrogen gas, but also has some particles and heat residues in the discharged tail gas, directly Emissions will bring certain pollution to the atmospheric environment and working environment

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