JPS63126510A - Solution filter - Google Patents

Abstract

PURPOSE:To obtain a filter which is capable of nearly completely washing in a short time while highly maintaining removal capacity of a foreign material and has prolonged service life by passing a soln. in the direction vertical to the shafts of a plurality of pieces of filter members which are made to a cylindrical shape and provided concentrically and detachably. CONSTITUTION:A soln. filter 1 is provided with both filter members 2-7 which are made to a cylindrical shape, provided concentrically and detachably respectively and made of a wire gauze and a couple of pipe seats 8 for fixing both end parts thereof. The average diameter of the mesh size of the filter members 2-7 is continuously made fine toward the inside from the outside. After passing a soln. toward the inside of the filter member 2 from the outside of the filter member 7, this soln. is fed to a lower stage through the hole 9.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a solution filter for filtering impurities in a solution during transportation of the solution within a plant.

[Prior Art] For example, in coke oven gas desulfurization equipment, coke oven gas is treated with f1521 using a monoethanolamine solution.
iI is working. The monoethanolamine solution after desulfurization cannot be reused as it is because it contains dust in the gas, but this solution is filtered through an appropriate filter and used for circulation, which reduces running costs. Therefore, we aim to stabilize the desulfurization rate and prevent troubles caused by rotting and abrasion of equipment within the system.

The filter used here is composed of long and short fibers or cotton-like fibers, and in order to obtain a sufficient filtration effect, approximately 25
It has a thickness of 11 or more. First, relatively large foreign particles of about 30 to 100 μm in the solution are removed using a coarse filter, and then foreign particles with a finer mesh are removed using a finer mesh filter.

[Problems to be Solved by the Invention] By the way, the foreign substances in the solution mentioned above are not only inorganic substances, but also aggregates of gelatinous organic substances.
The coarse filter becomes clogged within a short period of time. For this reason, there is a problem that the filter must be replaced more frequently and the life of the filter is short. This increases the running cost of the device.

This invention was made in view of such circumstances, and
The purpose of the present invention is to provide a solution filter that can be almost completely cleaned in a short time while maintaining a high foreign matter removal ability and has a long life.

[Means for Solving the Problems] The solution filter according to the present invention is a solution filter that filters a solution by passing the solution therethrough, and has a cylindrical shape and includes a plurality of removably installed filter members. However, these filter members are arranged concentrically and are characterized in that they allow the solution to pass in a direction perpendicular to their axes.

[Function] In this invention, since the structure is such that a plurality of filter members are arranged concentrically, each filter member can be made thin, and since these filter members are installed in a removable manner, cleaning work is facilitated. I can do it.

Therefore, the filter member can be cleaned in a short time, and deposits can be almost completely removed, thereby extending the life of the filter member. In addition, since a plurality of filter members are arranged concentrically and the solution passes through them perpendicularly to the axial direction, the length of the filter member through which the solution passes can be greater than a predetermined value, which improves the foreign matter removal ability. can be maintained high.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a sectional view showing a solution filter of this actual IM example. The solution filter 1 has a cylindrical shape, and includes six filter members 2.3 each arranged concentrically and made of wire mesh.
．． 4.5, 6, 7, and a pair of tube seats 8 for fixing both ends of these.

The filter members 2 to 7 are arranged from the inside to the outside in the order of their reference numerals, with the filter member 2 being the innermost one and the filter member 7 being the outermost one. Each filter member has a thickness of less than 51 m (for example 41 m), and the average diameter of the mesh is approximately 30 μm in the inner part of the filter member 2 and approximately 100 μm in the outer part of the filter member 7. Each filter member has a gradient of average diameter so that the average diameter of the mesh of the wire mesh changes continuously in these areas. The tube seat 8 has a hole 9 in its center.
The filter member has a substantially disk shape, and 101 protrusions 11 are formed concentrically on the surface to which the filter member is fixed. The ends of the filter members 2 to 6 are fitted and fixed between adjacent protrusions 11, respectively. Further, on the outermost side of the tube seat 8, a protrusion 12 is formed along its outer periphery toward the opposite side from the protrusion 11.

A band 1 is provided on the outside of this protrusion 12 along its outer periphery.
3 is positioned so that the end of the filter member 7 is sandwiched between the protrusion 12 and the band 13. These projections 12, filter member 7, and band 13 are tightened with a plurality of bolts 14 and nuts 15, thereby fixing filter member 7 to tube seat 8.

In the solution filter configured in this way, the solution is passed from the outside of the filter member 7 toward the inside of the filter member 2. Thereafter, this solution is supplied to the lower process through one hole 9. In this case, the average diameter of the eyes of the filter member is about 100 μm to 30 μm from the outside to the inside.
Since the particle size is continuously finer between μm, coarse foreign matter is repaired on the outside of the filter member, and fine foreign matter is repaired on the inside, making clogging less likely to occur. When cleaning the filter members, the bolts 14 and nuts 15 are removed, and each filter member is removed from the tube seat 8 and cleaned.

In this way, since each filter member can be removed, cleaning is easy. In addition, the thickness of each filter member is 5a.
Since it is thin (less than +s), it can be almost completely cleaned in a short time, and the life of the filter member can be extended.

For example, the conventional lifespan of 6 months can be increased to 12 months. Note that even if each filter member is made thin in this way, since they are arranged concentrically, the distance through which the solution passes can be made, for example, about 24 mm (when the thickness of the filter member is 4IIIl). , there is no risk of reducing the ability to remove foreign substances.

In this embodiment, a filter for removing coarse foreign matter of 30 to 100 μm is shown, but the present invention can also be applied to a filter for removing fine foreign matter. In this case, for example, cotton-like fibers are used for the filter member.

Further, although the filter member is made of a wire mesh, it is not limited thereto, and, for example, a porous sintered metal having a predetermined pore size may be used.

[Effects of the Invention] According to this invention, since a plurality of cylindrical filter members are arranged concentrically, each filter member can be made thin, and since these can be removed, cleaning of the filter members is facilitated. It can make your work easier. Therefore, the filter member can be almost completely cleaned in a short period of time, and the life of the filter can be extended. Thereby, the running cost of the device can be reduced.

Further, since a plurality of filter members are arranged concentrically and the solution is passed perpendicularly to the axial direction of the filter members, the length through which the solution passes through the filter members can be ensured to be at least a predetermined value.

Therefore, the removal ability can be maintained high.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a solution filter according to an embodiment of the invention. 1; Solution filter, 2, 3, 4.5.6, 7: Filter member, 8; Pipe seat

Claims (1)

[Claims] A solution filter that filters a solution by passing a solution therethrough, has a plurality of cylindrical filter members that are removably installed, and these filter members are arranged concentrically,
A solution filter characterized by passing the solution in a direction perpendicular to its axis.