A multi-functional high-efficiency lubricating oil purification process device

Abstract

The invention relates to a purifying device and method for polluted lubricating oil (i.e., dirty oil). The device comprises a magnetic rotator, a centrifuge and a fine filter which are connected sequentially, wherein a liquid outlet of the magnetic rotator is connected with a liquid inlet of the centrifuge through a first adapting pipe, and a liquid outlet of the centrifuge is connected with a liquid inlet of the fine filter through a pipeline. According to the device and the method disclosed by the invention, methods such as rotating-magnetic coagulation, centrifugal separation and membrane type refined filtration are organically combined, so that deep purification of the polluted lubricating oil is achieved; and the restraint, i.e., singleness of the existing equipment is overcome, various impurities such as enginery, water, air and oxidative colloids generated during the use of various kinds of lubricating oil can be effectively removed, the liquid quality of the lubricating oil is remarkably improved, running equipment is reliably guaranteed, the service life of liquid oil is substantially prolonged, the consumption of the lubricating oil is lowered, the cost of the lubricating oil is reduced, the environmental pollution caused by waste liquid oil is reduced, and great direct or indirect economic benefit is produced.

Description

technical field [0001] The invention relates to the technical field of lubricating oil purification, in particular to a multi-functional, combined lubricating oil efficient purification complete set of process system equipment. Background technique [0002] With the development of science and technology, the level of mechanization and automation of the industry is constantly improving, and the use of lubricating oil, which is indispensable for mechanical operation, is increasing, and it is used in all aspects of equipment such as lubrication, cooling and hydraulic transmission. Quality and maintenance management directly affects the normal operation of the entire production system, and is related to the safety, quality and efficiency of the enterprise. Therefore, people vividly call lubricating oil the "blood" of the machinery industry. Since the lubricating oil is continuously cyclically heated and aged during use, coupled with factors such as mechanical friction, local da...

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Problems solved by technology

[0005] In the above technical methods and equipment, the degree of treatment of dirty oil is limited, and it is difficult to achieve the ideal purification target of oil. Due to historical factors and factors of one-time input cost, the filtering method is the dominant method so far, which also leads to pollution. There are many problems in the deep purification and high recycling of oil, the specific comparison is as follows:

[0006] For filter equipment, due to the very fine particles mixed in the oil, the high viscosity of the oil and the presence of carbon black and colloids, the blocking effect of the filter cannot reach a higher level, otherwise the oil cannot pass through. , very limited even with pressurization, and cannot be cleaned

The general filtration method can not remove the moisture in the oil, so the degree of purification is very limited, and it is very easy to block, the filter element is replaced frequently, and the management is not in place, which can easily cause equipment failure. Since the filter element is difficult to regenerate, it can only be treated as waste. Although the filter paper It is relatively cheap, but it cannot be cleaned, the usage is large, the waste is difficult to dispose of or it is easy to cause secondary pollution. The same problem exists in the metal filter element, which increases the long-term operation cost of the production facility.

[0007] The main principle of the coalescing equipment is not much different from that of the filter element, except that smaller microporous hydrophobic materials are used to block the passage of the emulsion, but it does not work at all for natural water and bound water, and the dehydration efficiency is low.

[0008] The main function of evaporative equipment is to remove gas and moisture. Since a large amount of energy is used to heat the oil, and then the boiling point is reduced by vacuum to increase the evaporation rate, this method is very costly to deal with dirty oil, especially it is easy to make the oil prematurely. Aging relatively offsets the overall value of regeneration treatment, but also increases more hidden dangers and costs

[0009] The centrifugal purification method is a new technology that has only emerged in recent years. It separates the particles and water in the oil through high-speed rotating centrifugation, and can also discharge part of the gas, so it can achieve the effect of three-phase separation, and the speed is also faster. , is also a single device with relatively complete functions, but due to the characteristics of the mechanism itself, it can only separate particulate matter and water that are heavier than oil, but has no effect on light matter (carbon black) and colloids (oxides). The treatment of oil is difficult to achieve a better level, and there is little improvement in the color produced by colloids and carbon black

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