Aluminum roller milling oil refining device

Abstract

In order to solve the problems of unreasonable design and high operating cost of the existing aluminum rolling oil rectification device, the present invention provides a new aluminum rolling oil rectification device, which includes an oil supply system, a rectification system, a return system, a finished product Oil discharge system, circulating heating system, waste oil discharge system, vacuum pumping system, circulating water cooling system and control system are directly heated by electric heaters with low surface power density, and the return flow and refined oil are separately transported, and the oil supply pipeline Setting the flow regulating valve, adopting the coaxial solenoid valve with back-up function instead of the back-up valve and the solenoid valve, and using a rotary vane vacuum pump instead of the configuration of the vacuum pump unit ensure the quality of the rolling oil. , shorten the tube length, improve thermal efficiency, and reduce operating costs.

Description

technical field [0001] The invention relates to a rectification device, more specifically to an aluminum rolling oil rectification device, which belongs to the technical field of aluminum plate, strip and foil processing machinery. Background technique [0002] The existing aluminum rolling oil rectification device adopts the frequency conversion pump to control the oil supply. The disadvantage of this oil supply method is that when the device stops running, due to the large pressure difference between the inside and outside of the rectification tower, in order to prevent the oil supply caused by the pressure difference If the oil product is not flowing normally, a pressure backup valve (or a valve with similar function) should be installed on the pipeline to prevent the abnormal flow; the second is that the frequency conversion pump needs to be installed near the oil supply tank, and the oil tank and the device are separated in the field This is not conducive to the adjustm...

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Problems solved by technology

[0002] The existing aluminum rolling oil rectification device adopts the frequency conversion pump to control the oil supply. The disadvantage of this oil supply method is that when the device stops running, due to the large pressure difference between the inside and outside of the rectification tower, in order to prevent the oil supply caused by the pressure difference If the oil product is not flowing normally, a pressure backup valve (or a valve with similar function) should be installed on the pipeline to prevent the abnormal flow; the second is that the frequency conversion pump needs to be installed near the oil supply tank, and the oil tank and the device are separated in the field This is not conducive to the adjustment, control and management of the pump; the indirect heating method of steam or heat transfer oil furnace as the heating source is used for the heat supply of the rectification tower, the heating pipeline is long and the composition of the heating monomer is large, resulting in The thermal efficiency is low, and the energy consumption is high; in the way of return liquid transportation, a centrifugal pump is used for return oil transportation and product oil transportation, and a regulating valve is set on the return pipeline, because the product oil is controlled by the liquid level setting If it is delivered intermittently, in the repeated process of product oil delivery and stop, it will disturb the return flow control, and the return flow directly affects the purity of rolling oil after rectification; ) and low NPSH (<0.5m) centrifugal pumps are rarely used in industry. In order to meet the process requirements, centrifugal pumps with larger flow rates have to be used to increase the self-circulation pipeline (the pump outlet pipeline is directly connected to In the container where the pump extracts the fluid) to achieve the requirement of small return flow, which increases the power load and is not conducive to the precise control of the return flow; on the product oil delivery pipeline and the waste oil delivery pipeline at the bottom of the tower, in order to prevent internal and external pressure The backflow phenomenon caused by the difference, adopts the configuration method of setting the backup pressure valve and the electromagnetic valve to be used together. There are many monomers and pipeline interfaces, which are prone to leakage; in the vacuum acquisition method, a vacuum pump group (2 Roots pumps and 1 liquid ring pump) for vacuuming, the power of the pump set is relatively high, and the operating cost is relatively high

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