JPS6041508A - Removing apparatus of impurity in oil - Google Patents

Abstract

PURPOSE:To increase remarkably the removability of impurities in oil by providing an oil storage tank having a hot air bubbling mechanism before a dewatering vessel in the removing apparatus of impurities in oil. CONSTITUTION:An oil storage tank 20 is connected to a bottom oil ditch 9 for collecting sealing oil b1, and separation tanks I , II, III, and IV are successively provided at the succeeding stage of the oil storage tank 20. A hot air bubbling mechanism is constituted by providing a hot air piping 21 having an opening and closing valve 22 for supplying hot air into the oil storage tank 20. An air vent 23 communicating with a piping having a fan 24 is provided at the upper part of the oil storage tank 20. In this way, the sealing oil b1 flowing into the oil storage tank 20 and accumulating is bubbled by opening the opening and closing valve 22, and supplying the hot air from the hot air piping 21. Accordingly the organic solvent components such as benzene and naphthalene are efficiently evaporated and separated, and discharged from the air vent 23.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oil impurity removal device installed in a seal oil circulation system in a dry gas holder or the like.

To explain a conventional example of a dry gas boulder, as shown in Fig. 1, a piston (4) that moves up and down as the stored gas (α) increases or decreases is installed inside the holder body, which is composed of a side wall (1), a roof (2), etc. ), and a sealing rubber, that is, a sealing member (5) is provided around the entire circumference of the piston (4), and the side wall (1
), it is impossible to prevent the stored gas (α) from leaking upward from the sealing member (5) due to the gas pressure difference between the upper and lower sides of the piston (4).

Therefore, we developed a sealing device for a dry gas holder as shown in FIG. 2, and also developed an oil impurity removal device as shown in FIG. 3 in the seal oil circulation system attached to the sealing device. That is, as shown in FIG. 2, the sealing device has a seal oil tank bottom (6) fixedly provided on the outer periphery of the peripheral wall (4') of the piston (4), and has a rising part (6a). A seal member (5') (seal rubber) is disposed over the entire outer circumference of (6α), and a support member (7a) of the seal member (5') is attached to a link member that is swingably attached to the piston (4) side. (7h), and the support member (7α) is tensioned by a tension spring (8) suspended by a bracket (not shown) protruding from the peripheral wall (4') of the piston (4). ,
Press the seal member (5') against the side wall (1) of the holder body, and apply seal oil (h) to the top of the seal oil tank bottom (6).
) is provided with a sealing oil tank (A) that accommodates the sealing oil (A), and elastic contact of the sealing member (5') to the side wall fil side by the tensile force (8) and the static pressure of the sealing oil (A). This prevents the stored gas (α) from leaking upward, and the seal oil (b) has the function of sliding lubrication of the seal member (5) and lubricates the seal member as it moves up and down. (5') leaks moderately, flows down along the side wall (11), and flows down the side wall (11).
It has the anti-corrosion and anti-wear effects of 1), and the leaked seal oil (BL) is collected in the bottom oil groove (9) (see Figure 1) provided at the bottom of the side wall (1). The oil is circulated from the bottom oil groove (9) to the seal oil tank (a) by a circulation system.

Furthermore, the oil impurity removal device installed in the circulation system removes sludge, condensed water, etc. in a separation tank (1) connected to the bottom oil groove (9) as shown in Fig. 3. Leakage including 1
Condensed water (C1) containing sludge, etc., separated by the difference in specific gravity, is sent into the drain tank (Iz) by the manual pump (11) Ic, and the holder body A head H is generated in the condensed water (C) in the drain water tank (12+) due to the stored gas pressure (P) communicated with the inside, and the water is discharged from the drain port (12α).
The condensed water, etc. (seal oil (b+
) and overflows from partition wall a□□□ to tank (II).
The seal oil (hl) in the tank (U) generates a head due to the stored gas pressure (pi) and flows into the tank (I) as shown by the arrow.
After further flowing into the tank (IV) one after another.

The cleaned seal oil in the tank @) is circulated through the circulation path (I7) to the seal oil tank (A) for sealing the piston (4) by a circulation pump θe that is activated based on the detection of the liquid level of the float 09. The configuration is such that

However, the previously developed device for removing impurities in oil does not have the function of separating organic solvent components in seal oil, so organic solvent components such as naphthalene and benzene contained in the stored gas are removed from the seal oil. It has the disadvantage that it melts into oil and gradually increases in concentration during circulation, accelerating the deterioration of rubber seal members.

The present invention is an oil impurity removal device developed in view of the above-mentioned circumstances, and is an oil impurity removal device installed in a seal oil circulation system, in which the oil impurity removal device is installed upstream of a sludge/moisture separation tank. , which is characterized by the provision of an oil storage tank with a hot air pulling mechanism. The object of the present invention is to provide an apparatus for removing impurities in oil which improves the performance of removing impurities in seal oil and eliminates the above-mentioned drawbacks by providing a mechanism for separating solvent components.

The present invention has the above-mentioned configuration, and an oil storage tank having a hot air pulling mechanism is provided upstream of the sludge/moisture separation tank in the oil impurity removal device disposed in the seal oil circulation system. Therefore, the seal oil is subjected to bubbling action by hot air pressure in the oil storage tank, and dissolved components such as organic solvents are efficiently evaporated and separated, and then the separated seal oil is transferred to the subsequent separation tank. Sludge flows in and is left undisturbed.
Moisture and the like are separated, and the hot air supplied into the oil storage tank forms bubbles in the seal oil to promote the separation and discharge of components such as organic solvents, thereby significantly improving the performance of removing impurities in the oil. the result.

The previously developed seal device equipped with a seal oil tank can be widely used for sealing various gases, etc.

An embodiment of the present invention will be described below with reference to the drawings.

An embodiment of the present invention is shown in Fig. 4, in which (1) is the side wall of the dry gas holder main body, (9))-1 side wall (1)
The leaked seal oil (hl
), and an oil storage canopy is connected to the bottom oil groove (9), and a separation tank (■), a tank (■), a tank (I), Tanks OV) are installed in stages.

A manual pump α9 is attached to the separation tank (D, and the manual pump (11) is connected to the drain water ma'a and the drain port (12α
), and the separation tank (D is connected to the tank (TI) through the partition wall 0 which allows the seal oil (BL) to overflow, and the tank (II) is connected to the tank (TI) through the overflow partition wall). (1) Furthermore, a float (+5
1 is provided, and a circulation pump (16) is connected thereto, further communicating with the circulation path 0η.

Sarani, in this example, 1 separation 41 (1) (M
A warm air piping Qυ having an on-off valve (c) and supplying hot air is installed in the oil storage tank installed in the t1 stage to form a warm bubbling mechanism. ,fan(
It has a configuration in which a ventilation hole C is provided which communicates with the conduit having the pipe.

Since the illustrated embodiment of the present invention has the above-described configuration, the seal oil (bl) flowing down along the side wall (1) of the holder main body through the seal member (5') shown in FIG.
) is collected in the bottom oil groove (9), flows into the oil storage tank +21 and is stored therein, and the on-off valve is opened to blow warm air from the hot air pipe (20) into the seal oil (BL) in the oil storage tank. As the sealing oil (BL) is supplied, the oil temperature increases due to the bubbling effect of the hot air, and organic solvent components such as benzene and naphthalene dissolved in the oil are efficiently evaporated due to the bubbling effect of the hot air. The seal oil (bl) after separation flows from the oil storage tank f20) into the separation tank (1), and is also discharged through the ventilation hole C;
1) Sludge and condensed water in the seal oil (BL) are separated.

Furthermore, the sludge, moisture, etc. fc1 separated in the separation +ff (1) are discharged from the drain rotor (12α) via the drain tank qz as described above by the manual pump (111), and the sludge, moisture, etc. Seal oil (bl) after the separation is transferred to tank (1) by overflow from partition wall 0 tank.
), the seal oil (ht) in tank (II) generates a head due to the stored gas pressure (pl) as shown in the figure, and overflows into the next stage tank (1) - further into the next stage tank GV.
) into the tank (IV).
The circulation pump (10
is activated, the cleaned seal oil in the tank (lv) is circulated through the circulation path 07) into the seal oil tank (a) shown in Fig. 2, and the seal oil in the seal member (5') is As described above, according to the present invention, organic solvent components (benzene, naphthalene, etc.) from the circulating seal oil are efficiently separated by hot air bubbling action in the previous stage, and the The hot air from the bubbling forms a group of rising bubbles in the seal oil, promoting the separation and discharge of organic solvent components.
Since the separated organic solvent component is taken out from the upper part of the oil storage tank to the conduit having a fan together with the bubbling hot air, the hot air bubbling does not have a negative effect on the subsequent separation of sludge, moisture, etc. The separation efficiency of organic solvent components, sludge, moisture, etc. is significantly improved.

So also. Since deterioration of the piston sealing member shown in Fig. 2 is prevented and its sealing performance is significantly improved,
The sealing device shown in FIG. 2 can be used for general purposes for sealing various gases.

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

Figure 1 is a partially cross-sectional side view of a conventional dry gas holder, Figure 2 is a cross-sectional side view of the piston sealing device in the previously developed dry gas holder, and Figure 3 is the same as Figure 2. FIG. 4 is a vertical cross-sectional view of the previously developed impurity removal device in oil that is used in the seal oil circulation system shown in FIG. b, b,: Seal oil ■: Separation tank (sludge, moisture, etc.)
9: Bottom oil groove 20; Oil storage tank 21. 22: Hot air A-pull mechanism (on/off valve, hot air piping) 23: Vent sub-agent Patent attorney Shige Okamoto 3 other people

Claims (1)

[Claims] A device for removing impurities in oil installed in a seal oil circulation system, characterized in that an oil storage tank having a hot air bubbling mechanism is provided upstream of a sludge/moisture separation tank.