JPH0128814Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a packing body for a gas-liquid contact device used in a gas-liquid contact operation of a chemical reaction device.

Generally, gas-liquid contact operation of chemical reactors, e.g.
Various types of packing bodies are also used in lime gypsum flue gas desulfurization equipment to increase the efficiency of gas-liquid contact. Conventionally, as a packing body for such a gas-liquid contact device, an injection molded product made of synthetic resin as shown in FIG. 1 has been used. That is, a board group 11a in which a plurality of perpendicular boards 11 are arranged parallel to each other and another board group 12a made up of mutually parallel boards 12 whose side surfaces are orthogonal to each other are configured in a lattice shape. A filling body made of

Since this type of packing for gas-liquid contact devices removes contaminants from the air stream through contact between gas and liquid, the flow pressure of the gas and the contact time between the gas and liquid are important. . Therefore, it is desirable to prevent gas flow pressure loss and to allow the liquid to remain on the sides of the plate for a longer period of time.

In the conventional product, in order to reduce gas flow pressure loss, the interval between the plates 11 and 12 forming the lattice-like structure is relatively large, and the side surfaces are formed vertically. For this reason, the proportion of liquid that comes into contact with the filling body and flows down is small, and since the side surfaces are vertically formed, the liquid flows down the sides of the plates 11 and 12 in an extremely short time, reducing the contact efficiency of the liquid. It was never satisfying.

Therefore, in the conventional structure, it is necessary to increase the number of packing bodies in order to increase the liquid contact efficiency, but there is a problem that increasing the number of packing bodies increases the cost and the size of the device.

This idea was made in view of the current situation, and it extends the holding time of the liquid and
We have developed a packing for gas-liquid contact devices that reduces the void ratio to increase the contact ratio with the packing, reduces gas flow pressure loss to improve contact efficiency, and can be formed at low cost with a simple mold. The purpose is to provide.

For this reason, the configuration of this invention is such that in a packing body consisting of a pipe group consisting of a plurality of pipes arranged parallel to each other and a connecting plate facing orthogonally to the pipe group, approximately the center line in the longitudinal direction of the pipes It is characterized in that split molded filler forming members are combined and joined, and a gap is provided at one end side of the connecting plate with pipes arranged side by side, which is at least half a pitch wider than the other end side.

This invention will be described in detail below based on illustrated embodiments.

FIG. 2 and subsequent figures show a packing body for a gas-liquid contact device according to this invention. 1 shows a case in which the filling bodies 20 are stacked in two stages.

The pipe group 21a is formed by horizontally disposing a plurality of pipes 21 parallel to each other, and the filling body 20 is arranged between the pipes 21.
It is constructed by joining together filler-forming members 24 that are divided approximately along the center line 23 of the pipe in the length direction of the pipe.

As shown in the perspective view of FIG. 4, the filling body 20 is made by joining two filling body forming members 24 which are separately molded along the center line in the longitudinal direction of the pipe 21 and are butted against each other.

Next, the structure of the filling body forming member 24 shown in FIG. The connecting plates 22a and the opening surface are arranged in parallel with each other with the upper surface facing upward, and are fixed with the connecting plate 22a and the opening surface being on the same plane. Connecting plate 22a
An auxiliary plate 26 is provided protruding parallel to the semicircular pipe member 25 to facilitate stacking.

One end side of the connecting plate 22a is provided with an interval wider than the other end side by about half a pitch or more with respect to the pitch of the semicircular pipes 25 arranged in parallel at a predetermined interval.

Therefore, these filling body forming members 24 are butted and joined to form a filling body 20, and this filling body 20 is
When stacked with the directions changed by 180 degrees, the pipes 21 in the upper and lower stages will be arranged so as to be shifted by about half a pitch from each other (see FIGS. 2 and 3).

Next, the usage state of the filling body 20 according to the above configuration will be explained.

FIG. 6 is a cross-sectional view of the filling bodies 20 stacked in three stages. When the filling bodies 20 formed by butting and joining the filling body forming members 24 are stacked with the direction changed by 180 degrees, the pipe 21 becomes vertical. They overlap every other row in the direction, and the liquid is received at the top surface of the pipe 21 as shown by the arrow, travels along the surface, and flows down from the bottom surface.

Therefore, compared to a conventional plate-shaped vertical surface, the distance that the liquid travels is longer, and since it travels along the surface of the pipe, the liquid flows slowly down, and the hold time during which the liquid is in contact with the pipe is also reduced. That's how long it gets.

In addition, if the pitch of the pipes 21 is made small so that the first stage pipe group and the second stage pipe group partially overlap, that is, the pitch interval is smaller than the outer diameter of the pipes, the liquid It is also possible to receive them one after another and make them flow down the lower pipe.

Note that the outer diameter dimension, number, etc. of the pipes 21 constituting the pipe group 21a may be determined depending on the size of the filling body, or conditions such as the quality of the liquid and the amount of the liquid.

The filling body 20 is made into one unit by abutting the filling body molding members 24 and joining together, but it is also possible to form a set by stacking these units of filling bodies 20 with their directions changed by 180 degrees.

As explained above, in this invention, the pipe is divided along the center line in the length direction to form the filler forming member, so the mold has a simple two-part structure and is easy to mold. .

Also, since the liquid flows down the outer circumferential surface of the pipe,
Compared to a conventional packing body consisting of a strip-shaped plate with vertical sides, the distance over which the liquid flows is longer, the speed of the flow is slower, and the contact time between the liquid and the gas is correspondingly longer.

Furthermore, since the pipes are arranged in parallel between the connecting plates, the gas flow pressure loss can be kept to a minimum even if the space ratio is reduced, and the contact efficiency can be significantly improved.

Not only is the cost reduced by segmented molding, but the cost of the gas-liquid contacting device as a whole is greatly reduced by reducing the number of fillers used due to improved contact efficiency.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional packing body, and Fig. 2 and subsequent figures show embodiments of the packing body according to this invention.
The figure is a perspective view, FIG. 3 is a side view, FIG. 4 is a perspective view of the members for forming a filling body butted against each other, FIG. 5 is a perspective view of the members for forming a filling body, and FIG. 6 is a stacked state. FIG. 20... Packing body for gas-liquid contact device, 21... Pipe, 21a... Pipe group, 22... Connection plate, 23
... Parting line, 24 ... Filler body forming member, 25
...Semicircular pipe member, 26...Auxiliary plate.

Claims (1)

[Scope of utility model registration request] In a filling body consisting of a pipe group made up of a plurality of pipes arranged parallel to each other and a connecting plate orthogonal to the pipe group, the filling body forming members that are split and formed approximately at the center line in the length direction of the pipes are butted together. 1. A packing body for a gas-liquid contact device, characterized in that a gap is provided at one end of a connecting plate with pipes arranged side by side and at least half a pitch wider than the other end.