KR20010017289A - Filtering device for pre-treating the oil scum - Google Patents

Abstract

PURPOSE: Disclosed is a filtering equipment for pretreatment of oil scum. CONSTITUTION: The devised equipment is composed of the first steam distributor(2) which supplies steam to remove impurity contaminated on the wall of inner duct(23), a nozzle(2a), an L-shaped supporter(3), the second steam distributor(9), an upside cover(22), and a pressure gauge(7).

Description

FILTERING DEVICE FOR PRE-TREATING THE OIL SCUM}

The present invention relates to a filtering device used for pretreatment of an oil scum, and more particularly, to a odor in the process of filtering impurities, which are impurities in an oil scum, in order to recycle oil scum, which is a waste generated in a rolling process of a steel mill. The present invention relates to a filtering device for oil scum pretreatment without the occurrence of oil and easy cleaning and maintenance.

In general, the oil scum generated in the rolling process of an ironworks includes a large amount of dregs such as scales generated during the rolling process and pieces of cloth and other foreign substances introduced during separation, storage and transportation.

Since the recycled oil scum is sprayed through the nozzle into the blast furnace, filtration of the residue before recycling is indispensable. In addition, if the effective pretreatment is not performed, clogging frequently occurs in the filter system, which greatly affects the operation of the recycling facility.

1 is a longitudinal cross-sectional view showing a filter for oil scum pretreatment according to the prior art. As shown in the drawing, the conventional filter 100 includes an outer cylinder 21 wrapped by a heat insulating material 30, and a detachable upper surface thereof. The inner cover 23 and the upper cover 22 and the outer flange 21, the flange 23a of the upper end is caught on the engaging jaw 21a of the inner circumferential surface 21, and a plurality of filter holes are perforated on the outer surface. , The inlet line 24 through which the untreated oil scum is introduced, the outlet line 25 through which the filtered oil scum is discharged, and the drain pipe 26. Reference numeral 27 is a sealing member for sealing the gap between the upper cover 22 and the outer cylinder (21).

The pretreatment operation for the oil scum in the conventional filter 100 is when the untreated oil scum flows through the inlet line 24 and flows into the inner cylinder 23 in the outer cylinder 21. Silver is discharged to pass through the filter hole of the inner cylinder 23 to be recycled to the outlet line 25, and large particles of residue remain in the inner cylinder 23. At this time, as the amount of oil scum increases, the amount of residue left after being filtered through the inner cylinder 23 increases, and when the filtered residue sticks to the filter hole of the inner cylinder 23, smooth filtering becomes difficult. In addition, as the untreated oil scum flows into the gap between the engaging jaw 21a and the flange portion 23a generated as the inner cylinder in the outer cylinder 21 floats upward by the excessively introduced oil scum, the outlet line 25 flows in. ) Has a problem of reducing the filtration efficiency by sealing.

Therefore, the operator should remove the filtered debris in the inner cylinder 23 on a regular basis, and for this purpose, the upper cover 22 assembled on the outer cylinder 21 is separated, and the two workers become a pair of cylindrical inner cylinders ( 23) to the outside to clean it, and then re-installed, the sediment that has sunk on the floor with a human hand to dispose of the remaining sediment to the bottom of the outer cylinder (21).

In the maintenance work of such a filtering device, a very strong odor is generated by the amine and aldehyde-based materials contained in the oil scum, so the working environment is very poor, which adds to the workload of the worker, and the inner lid and the inner tube of the heavy material. Separation and reassembly of components such as (23) is cumbersome, and it can pollute the surrounding environment, and it takes a lot of people and time for cleaning, thereby degrading work productivity.

Therefore, the present invention has been made in order to solve the above problems, the object is that the cleaning operation can be easily performed without disassembling the inner cylinder during the cleaning and maintenance work, odor does not occur during the cleaning work, work of one person It is to provide a filtering device for oil scum pretreatment that can be completed by the personnel in a short time.

1 is a longitudinal sectional view showing an oil scum pretreatment filter according to the prior art;

Figure 2 is a longitudinal cross-sectional view showing a filter for oil scum pretreatment according to the present invention,

Figure 3 is an exploded perspective view showing an oil scum pretreatment filter according to the present invention.

* Explanation of symbols for the main parts of the drawings *

2 ...... 1st steam piping 3 ...... Hanging member

4 ...... Support 5 ...... Handle

7 ...... Differential pressure gauge 9 ...... 2nd steam piping

21 ..... External 22 ..... Upper cover

23 ..... Inner tube 24 ..... Entrance line

25 ..... outlet line 26 ..... drain piping

The present invention as a technical configuration for achieving the above object,

An untreated oil scum is introduced through the inlet line, and an outer cylinder to cover the insulating material, an upper cover covering the outer cylinder portion, an inner cylinder for filtering the introduced oil scum, and an outlet line for discharging the filtered oil are provided in the oil scum. In the device for filtering debris,

The outer cylinder outer surface is provided with a plurality of nozzles connected to the first steam pipe for supplying steam to remove the debris attached to the inner cylinder inner peripheral surface, the locking member having a 'b' cross section is integrally provided in the lower cone portion And a second steam pipe for supplying steam to improve the fluidity of the residue deposited on the lower conical part, and the inner cylinder is formed with an opening on the lower side thereof, and the lower end is seated on the locking member, and the upper cover Equipped with a handle for easy installation, and equipped with a differential pressure gauge for detecting the pressure difference between the inlet line and the outlet line by providing a filtering device for oil scum pre-treatment, characterized in that cleaning is possible without removing the upper cover All.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is a longitudinal sectional view showing an oil scum pretreatment filtering apparatus according to the present invention, Figure 3 is an exploded perspective view showing an oil scum pretreatment filtering apparatus according to the present invention, as shown, the filtering device of the present invention (1) is provided with the outer cylinder 21, the upper cover 22, the inner cylinder 23 and the inlet, the outlet line 24, 25 as in the prior art, a detailed description thereof will be omitted.

On the outer surface of the outer cylinder 21 introduced into the inlet line 24, the untreated oil scum is filtered in the inner cylinder 23 to remove the debris attached to the inner surface. A plurality of nozzles (2a) for injecting steam of the steam is installed, the nozzle (2a) is configured to be connected to the first steam pipe (2), while the outer surface is wrapped with an outer surface (30) ( 21) The inner surface of the lower cone portion 21b is provided with an annular locking member 3 having an 'b' shaped cross section integrally.

In addition, the lower conical part 21 is provided with a second steam pipe 9 having a control valve 9a to supply high temperature and high pressure steam to impart fluidity to the residue deposited on the lower end of the outer cylinder, The second steam pipe (9) is connected to the drain pipe (26) having a control valve (26a) so as to discharge the waste of good flow at a time.

In addition, the inner cylinder 23 inserted into the outer cylinder 21 and seated at the lower end by the locking member 3 has an opening formed at a lower portion thereof, similarly to an opened upper portion, and a locking step 21a of the outer cylinder 21. The handle portion (5) easy to attach to the flange portion (23a) is caught by the seat so that the inner cylinder (23) can be easily removed when the upper cover (22) covering the upper portion of the outer cylinder (21) is removed. And a plurality of supports 4 having a predetermined length so as to contact the lower surface and the upper end when the upper cover 22 is assembled vertically. As a result, when assembling the outer cylinder 21 and the upper cover 22 into which the inner cylinder 23 is inserted, the pressure to the lower side is transmitted downward through the support 4 so that the inner cylinder 23 is filtered. It can be prevented from generating a gap while being lifted upward by excessive oil scum inflow.

In addition, the upper cover 22 is sufficiently convex to the internal pressure in the inner cylinder 23, which is increased by the filtration operation of the oil scum, while the upper surface center portion is convex upward so that interference with the handle 5 does not occur. It is preferable to be equipped with.

In addition, the differential pressure gauge 7 is configured to detect the pressure difference in the inlet line 24 for supplying the untreated oil scum and the pressure difference in the outlet line 25 for discharging the filtered oil to the outside.

Referring to the operation and effects of the oil scum pre-treatment filtering device according to the present invention having the configuration as described above are as follows.

In the case of pretreatment of the oil scum collected in the rolling process using the present invention shown in FIGS. 2 and 3, first, the oil scum including the dregs has an outer cylinder through the inlet line 24 in which the control valve 24a is opened. When introduced into the inner cylinder 23 assembled in the 21, the liquid oil of the oil scum is filtered while passing through the filter hole of the inner cylinder 23 so that the control valve 25a is recycled through the open outlet line 25. Exit

On the other hand, residues such as cloth, vinyl and other foreign matters having a low specific gravity do not escape and are accumulated on the inner surface of the inner cylinder 23, and residues such as scales having a high specific gravity are opened at the lower surface of the inner cylinder 23. Therefore, it is gradually deposited in the space of the lower end cone portion 21b of the outer cylinder 21.

When the pretreatment process of the oil scum is made for a long time and the amount of residue in the inner cylinder 23 increases, the pressure and the filtered oil at the inlet line 24 into which the oil scum flows are discharged by the adhered and deposited residues. The pressure difference generated in the outlet line 25 is gradually increased.

Subsequently, when the pressure difference measured by the differential pressure gauge 7 which detects and compares the pressure in the inlet line 24 and the outlet line 25 from time to time is equal to or more than a predetermined value, the cleaning and maintenance work on the inner cylinder 23 is performed. Determination and maintenance work should be carried out as necessary.

That is, when the control valve 2b of the first steam pipe 2 provided in the outer cylinder 21 is opened by the cleaning maintenance operation start signal of the differential pressure gauge 7, the high temperature and high pressure steam is discharged to each nozzle ( Through 2a), the residue is fixed and sprayed to the settled inner cylinder 23 side.

In this case, the residue attached to the inner cylinder 23 is backwashed by high temperature and high pressure steam and falls to the lower cone portion 21b of the inner cylinder 23, and the lower cone portion together with the dropped residue. The high temperature and high pressure steam is supplied into the lower conical part 21b which is the lower part of the outer cylinder 21 through the second steam pipe 9 to facilitate the discharge of the residue deposited on the 21b. At this time, each of the control valves 24a and 25b of the inlet line 24 and the outlet line 25 is kept closed so that no further oil scum is introduced or discharged during the cleaning and repairing operation. desirable.

In addition, the upper surface of the support 4 provided in the flange portion 23a of the inner cylinder is in contact with the lower surface of the upper cover 22 assembled on the outer cylinder 21 and fixed while pressing the inner cylinder 23 downward. As a result, the phenomenon of lifting upward by the high-pressure cleaning steam through the first and second steam pipes 2 and 9 does not occur. In addition, since the heat insulating material 30 is provided on the entire outer surface of the outer cylinder 21, it is heated during the cleaning operation using high-temperature and high-pressure steam to prevent cooling of the residue and oil scum, which has good fluidity, and during the cleaning operation. Prevent worker burns.

On the other hand, since the sediment collected under the outer cylinder 21 is provided with fluidity to facilitate the discharge by the steam supplied at high temperature and high pressure, each control valve of the first and second steam pipes (2) (9). (2b) (9a) in a closed state by connecting a vacuum car (not shown) to the drain pipe 26 to completely remove the residue and residual oil scum from the inside to the outside at a temporary time. Cleaning is possible without removing).

When the inner cylinder 23 is completely replaced, if necessary, the upper cover 22 assembled with the flange is detached and removed from the outer cylinder 21, and then the handle of the inner cylinder 23 is simply grasped to the outside. You can withdraw it and replace it with a new one.

According to the present invention as described above, the removal of the residues attached to and deposited on the inner and outer cylinders 21 and 23 is automatically performed by the differential pressure gauge 7 that determines the deposition amount of the residues, and the treatment of the removed residues. Since a single worker can easily perform the opening and closing operation of a simple control valve (2b) (9a) (24a) (25a) (26b), it significantly reduces the time required for cleaning and maintenance work compared to the prior art, thereby improving work productivity. On the other hand, due to the simple and smooth maintenance work, the effect of improving the operating efficiency of the entire equipment is obtained.

In addition, since the cleaning is performed in the closed space without disassembling the main body of the equipment for cleaning and maintenance work, no odor is generated and the environment is not polluted. In other words, in the six-step odor intensity labeling classification during cleaning and maintenance, the odor that detects no odor at all is maintained between 0 and 1, which detects slight odor.

Claims (3)

The untreated oil scum is introduced through the inlet line 24, and the outer cylinder 21 in which the heat insulating material 30 is wrapped, the upper cover 22 covering the upper portion of the outer cylinder 21, and the inflow oil scum are filtered. In the apparatus for filtering the debris in the oil scum equipped with the inner cylinder 23 and the outlet line 25 for discharging the filtered oil, On the outer surface of the outer cylinder 21 is provided a plurality of nozzles (2a) connected to the first steam pipe (2) for supplying steam to remove the debris attached to the inner peripheral surface of the inner cylinder (23), 'b' type A second steam pipe 9 for supplying steam so that the locking member 3 having a cross section is integrally provided at the lower cone portion 21b and the flowability of the residue deposited on the lower cone portion 21b is improved. The inner cylinder 23 has an opening formed at a lower surface thereof, the lower end of which is secured to the locking member 3, and the upper cover 22 is provided with a handle 5 for easy attachment, and the inlet line ( 24) and a differential pressure gauge (7) for detecting the pressure difference between the outlet line 25 is configured to clean the oil scum pre-treatment, characterized in that the cleaning can be carried out without removing the upper cover (22). The method of claim 1, A plurality of supports 4 having a predetermined length are perpendicular to the flange portion 23a which is caught by the latching jaw 21a of the outer cylinder 21 so that the lower surface and the upper end thereof come into contact with each other when the upper cover 22 is assembled. Oil scum pre-treatment filtering device characterized in that the installation. The method of claim 1, The upper cover 22 has a convex shape in the upper surface of the upper surface so as not to generate interference with the handle 5 while sufficiently enduring the internal pressure in the inner cylinder 23 increased by the filtration of the oil scum for a long time. Oil scum pre-treatment filtering device characterized by the load.