KR20160019990A - Recovery apparatus of oil mist from air and gas compressor - Google Patents

Abstract

The present invention relates to an apparatus and a method for recovering oil vapor which is generated as the temperature of oil injected for the purpose of temperature drop and lubrication of a gear or a bearing in a gear box of a large air compressor or a gas compressor facility is raised by contact with a high- More specifically, the present invention relates to an oil tank for storing a high-temperature oil discharged from a large-sized air compressor or a gearbox of a gas compressor, an oil tank for absorbing the vapor of the oil tank through a suction pipe, An injector for injecting the mixed fluid into the cyclone separator inlet and a mixed porous gas separator through which the introduced mixed gas is passed through a cylindrical porous partition provided with a plurality of micropores 156 provided therein to discharge the air to the air outlet The vapor condensate is sent to the oil tank through the condensate outlet. The present invention relates to a vapor recovery apparatus,

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to an apparatus and a method for recovering oil vapor which is generated as the temperature of oil injected for the purpose of temperature drop and lubrication of a gear or a bearing in a gear box of a large air compressor or a gas compressor facility is raised by contact with a high- More specifically, the present invention relates to an oil tank for storing a high-temperature oil discharged from a large-sized air compressor or a gearbox of a gas compressor, an oil tank for absorbing the vapor of the oil tank through a suction pipe, An ejector for injecting the mixed mixed fluid into the cyclone separator inlet and a mixed porous gas separator for separating the air by passing the introduced mixed gas through a cylindrical porous separator provided with a plurality of micropores provided therein to discharge the air to the air outlet, Cyclone separator sent to oil tank through condensate outlet It relates to a vapor recovery device, comprising a step of including.

In general, the rotational friction heat of gears and bearings in the gear box of a large air compressor or a gas compressor is generated and the temperature rises. In order to prevent the temperature rise in the gear box, oil is sprayed to maintain the proper temperature of the equipment The oil from the gearbox is discharged to a high temperature of about 80 ° C and stored in the oil tank. In the oil tank, the lower liquid oil layer and the upper vapor phase oil layer are formed. The liquid oil is oil cooler at about 48 ° C And supplied to the gear box again. The vapor phase vapor is recovered as a liquid phase oil using a vapor recovery device.

As shown in FIG. 1, a conventional vapor recovery device is a vapor recovery device in which a mixed fluid of air and a vapor, which is formed by vacuum-absorbing the vapor of oil in an oil tank by a high-pressure air flow in an ejector, is subjected to vapor / liquid separation using an air filter, The separated air was discharged to the outside and the vapor liquid was recovered to the oil tank.

However, in such a conventional technique, the use of an air filter that is easily contaminated for gas-liquid separation increases the degree of pollution of the filter, and the vapor separation efficiency is rapidly lowered. And the oil was attached to the vicinity of the discharge port, resulting in safety problems such as fire.

In addition, Korean Utility Model Registration No. 20-0257367 discloses an apparatus for condensing and separating a vapor by injecting a mixed fluid of high-pressure air and vapor generated in an ejector into a cooling condenser, and the vapor recovery efficiency is low, There is a problem that a separate adsorption tower must be installed and adsorbed and removed.

There has been a demand for an improved vapor recovery apparatus capable of improving the efficiency of separation of the conventional vapor recovery apparatus and recovering the vapor of high efficiency.

The present invention relates to a large-sized air compressor or a gas compressor, and more particularly to a large-sized air compressor or a gas compressor having a cylindrical porous multi- The present invention has been made in view of the above problems, and it is an object of the present invention to provide a vapor recovery apparatus of improved technology capable of separating and recovering a highly efficient cyclone separator.

In order to achieve this object, the present invention relates to an oil tank (110) for storing a high temperature oil discharged from a large air compressor or a gear box of a gas compressor;

An ejector 120 for absorbing the vapor of the oil tank through the absorption pipe 116 to mix with the air, and injecting the mixed fluid into the cyclone separator inlet;

The introduced mixed fluid is passed through a cylindrical porous partitioning device 155 having a plurality of micropores 156 provided therein to discharge air to the air outlet 159 and the vapor condensate is discharged through the condensate outlet 158 To the oil tank (110) through the circulation pipe (150).

In the present invention, the absorption pipe 116 is formed of a wire mesh demister 115 formed at an inlet of an absorption pipe located in the oil tank 110.

Also, in the present invention, the oil tank 110 is provided with a plurality of vertically formed partition 113 fixed to the upper surface of the oil tank 110.

The oil is injected for the purpose of maintaining the temperature and lubrication of the bulb gear of the gear box of the large air or gas compressor, the temperature of the journal bearing, and the lubricating oil. The injected oil comes into contact with the high temperature part in the gear box, When the oil vapor is contained in the oil and flows into the oil tank, the oil under the oil tank is distributed with the liquid oil, and the vapor in the upper part of the oil tank is distributed with the partially carbonized fume.

These vapors and fumes interfere with the flow of oil and cause pressure leakage inside the gearbox. Therefore, these vapors and fumes can be solved by discharging continuously from the gearbox.

The compressed air removes moisture from the air regulator and regulates pressure to enter the ejector. The introduced air is accelerated through the injection nozzle of the driving part to be converted from velocity energy to velocity energy. At this time, a negative pressure is formed in the vapor suction pipe, and the high-temperature vapor existing in the upper part of the oil tank is sucked into the ejector along the suction pipe. The inhaled vapor is mixed with the air as the driving fluid and passes through the ejector diffuser, instantaneously exchanges heat with each other, and flows into the cyclone while the vapor temperature drops.

The mixed fluid of the air and the vapor entering the cyclone starts to separate into the vapor droplet and air by the centrifugal force while descending with the swirling flow on the outer wall of the cylinder part. The cylindrical perforated partition provided in the inside is specially provided in the present invention to prevent re-entrainment. A plurality of holes having different diameters can be vertically installed, and the cylindrical porous partition is fixed between the outer surface and the cyclone body by a plurality of supports.

The cylindrical perforated partitions are formed by forming a plurality of cylindrical perforated partitions having different diameters and arranging the larger diameter part on the outer side and the smaller diameter part on the inner side. The larger the number of the cylindrical perforated partitions is, It is excellent, of course not too much.

The vapor condensate collected at the bottom of the cyclone is discharged through the condensate discharge port and recovered to the oil tank, and the separated air is discharged to the upper air discharge port.

The present invention is constituted by a cyclone separator provided with an ejector and a cylindrical porous partition, whereby the efficiency of separating and recovering the vapor can be separated and recovered at about 96% or more at a vapor diameter of 5 mu m, So that it is possible to separate and recover the vapor at high efficiency.

In addition, the negative pressure (about -100 mmH20) is formed in the gear box and the oil tank by the high-pressure air flow in the ejector, so that the flow of the oil is smooth.

Further, the present invention has the effect of preventing environmental pollution by discharging only clean air by separating and recovering the vapor generated in a gear box of a large air compressor or a gas compressor facility with high efficiency.

1 is a block diagram of the prior art;
1 is a block diagram of the present invention;
3 is a cross-sectional view of the cyclone separator of the present invention.
4 is a graph showing efficiency of separation and recovery of the vapor diameter of the present invention.

FIG. 1 shows a configuration of a conventional vapor recovery apparatus in which gears and bearings in a gear box 10 are heated by rotary motion, which smoothes the rotational movement of gears and bearings and cools heated gears and bearings The oil is injected by the oil pump 11 and the temperature in the gear box is cooled to about 80 캜 by the injected oil.

The oil to be injected is brought into contact with the heating portion of the gear and the bearing, and the oil vapor is contained in the oil and flows into the oil tank 20 through the pipe.

The incoming oil of about 80 캜 is formed in the oil tank 20 in the form of a vapor layer in which the lower part is a liquid phase oil layer and the upper part is vapor phase. The present invention relates to a high-efficiency recovery device for recovering and recovering vaporized oil as liquid oil.

The vapor of the oil tank 20 is mixed with the high-pressure air by the ejector 30 and is jetted to the air filter 40 to be air-liquid separated so that air is discharged to the atmosphere. The vapor is supplied to the oil tank 20 It is to recover.

In the prior art, the use of the air filter 40 for gas / liquid separation makes the air filter susceptible to contamination, and as the degree of contamination increases, the separation efficiency sharply decreases, and the unreacted vapor is discharged to the atmosphere together with air. The problems of such prior art have been described above.

Since the oil in the oil tank 20 is about 80 ° C, the high temperature oil is cooled to about 48 ° C by the oil cooler 50 and is injected into the gear box 10.

FIG. 2 is a view showing a constitution of a vapor recovery apparatus according to the present invention, and FIG. 3 is a view showing a constitution of a cyclone separator of the present invention.

The high pressure air supplied to the ejector 120 is removed by the air regulator 130 and the pressure is regulated to be supplied to the ejector 120. The high pressure air introduced into the ejector 120 is accelerated And the oil vapor in the oil tank 110 is sucked into the ejector through the suction pipe 116. The suctioned vapor is sucked into the driving fluid And the temperature of the vaporized vapor relatively lower than that of the air is lowered. As a result, the mixed fluid having a temperature lowered in the ejector 120 flows into the cyclone separator 150.

The mixed fluid of the air and the vapor introduced into the cyclone separator 150 is lowered in a swirling flow on the outer wall of the cylindrical portion 153 in the cyclone separator 150 and the air and the vapor liquid droplets are separated by centrifugal force action, Liquid separation is performed while passing through the cylindrical porous partition 155 provided at the lower part of the partition 153. As shown in FIG. 3, the clean air separated by high efficiency forms the upward swirl flow 161 And the condensed oil of the vapor is discharged through the condensate discharge port 158 and is recovered to the oil tank 110. [

In the present invention, a wire mesh demister 115 is formed at the inlet of the suction pipe 116 in which oil vapor in the oil tank 110 is sucked, to increase the efficiency of gas / liquid separation. A plurality of partitions 113 are installed in the vapor layer in the oil tank 110 and the partition wall 113 collides with the partition wall 113 while the oil vapor flows over the oil tank 110. [ So as to be liquefied.

4 is a graph showing the collection efficiency according to the droplet diameter when the cyclone separator of the present invention and the standard type crocon are used. As can be seen from the graph of FIG. 4, the collection efficiency (blue line) using the cyclone separator 150 of the present invention provided with the cylindrical porous partition 155 was about 96% And the collection efficiency is close to 100% when the particle diameter is 8 μm or more.

On the other hand, it can be seen that the use of the standard type cyclone (red line) is significantly lower than that of the present invention.

As described above, the vapor recovery apparatus of the present invention has a remarkably higher collection rate than that of the standard type ciclon by mounting the cyclone separator 150 provided with the specially designed cylindrical porous partition 155, It was confirmed that the recovery of the vapor of the remarkably high efficiency was possible.

The configuration of the present invention is not limited to the above-described embodiments, but includes various embodiments that can be practiced within the ordinary skill in the art.

10: gear box 20: oil tank 30: ejector 40: air filter 50: oil cooler
The present invention relates to an air purifier for an internal combustion engine and an air purifier for an internal combustion engine that includes an oil tank 113, a partition 115, an ejector 130, an air regulator 150, a cyclone separator 151, an inlet 155, a cylindrical porous partition 156, Swing flow

Claims (4)

An oil tank 110 for storing a high temperature oil discharged from a large air compressor or a gear box of a gas compressor;
An ejector 120 for absorbing the vapor of the oil tank through the absorption pipe 116 to mix with the air, and injecting the mixed fluid to the cyclone separator inlet;
The introduced mixed fluid is passed through a cylindrical porous partitioning device 155 having a plurality of micropores 156 provided therein to discharge air to the air outlet 159 and the vapor condensate is discharged through the condensate outlet 158 And a cyclone separator (150) for sending the oil to the oil tank (110) through the oil separator (150). 2. The vapor recovery system according to claim 1, wherein the absorption pipe (116) is formed with a wire mesh demister (115) at an end located in the oil tank (110). The oil vapor recovery device according to any one of claims 1 to 3, wherein the oil tank (110) is provided with a plurality of partition members (113) fixed to the upper surface of the oil tank (110). 4. The vapor recovery system according to any one of claims 1 to 3, wherein the cylindrical porous partition (155) is formed such that the smaller the diameter of the three cylindrical porous partition walls, the larger the diameter of the cylindrical porous partition is.

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