Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including solid – extended surface – fluid contact reaction...
Reexamination Certificate
2001-02-26
2004-07-27
Heinrich, Samuel M. (Department: 1725)
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including solid, extended surface, fluid contact reaction...
Reexamination Certificate
active
06767519
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a catalyst tower and a chemical decontamination liquid decomposing system having the catalyst tower.
2. Description of the Prior Art
FIG. 6
is a view showing the structure of an example of a conventional catalyst tower. In this catalyst tower, a chemical decontamination liquid flowing out of an inlet pipe
11
is turned upward and distributed in a lower chamber
12
, and after that, flows through an inlet mesh filter
13
, and flows upward in a catalyst
14
, and then flows through an outlet mesh filter
15
to be discharged through an outlet pipe
16
. When the catalyst is charged in a catalyst tower container
18
, the catalyst is charged by removing a catalyst tower upper lid
17
and the outlet mesh filter
15
. Further, in order to prevent the catalyst from occurring convection inside the catalyst tower container
18
due to a gas produced by decomposition reaction of the chemical decontamination liquid, the outlet mesh filter
15
is constructed so as to push down the catalyst using springs
21
. Therefore, the outlet mesh filter
15
needs to have a detachable and movable structure.
In order to made the structure of the outlet mesh filter
15
detachable and movable, it is necessary that gaps are provided both in a portion between the outer periphery of the outlet mesh filter
15
and the inner peripheral wall of the catalyst tower container
18
, and in a penetration portion of the inlet pipe
11
of the outlet mesh filter
15
. The gaps need to be made as small as possible from the viewpoint of preventing the catalyst from flowing out. Although the penetration portion of the inlet pipe
11
of the outlet mesh filter
15
can be eliminated by making the inlet pipe
11
so as to penetrate the side wall portion of the catalyst tower container
18
, it is uneconomical because the height of the catalyst tower container
18
is increased and accordingly a shielding container for containing the catalyst tower
5
becomes larger. Further, another method of narrowing the gaps considered is that O-rings are provided in the outer periphery of the outlet mesh filter
15
and in a penetration portion of the inlet pipe
11
, but in that case, the movability of the outer mesh filter
15
is decreased to deteriorate the function of pushing down the catalyst.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a chemical decontamination liquid decomposing system having a catalyst tower which has a mesh filter capable of certainly preventing catalyst from flowing out and a mechanism of pushing-down the catalyst capable of preventing convection of the catalyst caused by decomposition gas.
One of embodiment to attain the above object is a catalyst tower which comprises an outlet mesh filter arranged between a catalyst for decomposing the chemical decontamination liquid and an outlet pipe for making the chemical decontamination liquid flow out of the catalyst tower; and a catalyst charging port for charging said catalyst, and the outlet mesh filter is arranged so as to closely attached to an inner surface of the catalyst tower and to an inner surface of the catalyst charging port; and a catalyst pushing-down mechanism for suppressing convection of the catalyst is arranged inside the catalyst charging port.
As a concrete structure, the catalyst charging port
19
is arranged in a catalyst tower upper lid
17
, and the catalyst pushing-down mechanism
20
is arranged inside the catalyst charging port
19
, as shown in FIG.
1
. Further, the outlet mesh filter
15
has a structure closely attached to the inner wall of the catalyst tower container
18
and to the catalyst charging port
19
.
According to this structure, the catalyst can be directly charged into the catalyst tower container
18
through the catalyst charging port
19
, and accordingly there is no need to remove the catalyst tower upper lid
17
and the outlet mesh filter
15
. Further, by arranging the catalyst pushing-down mechanism
20
inside the catalyst charging port
19
, there is no need to form the outlet mesh filter
15
movable. By employing such a structure, there is no need to construct the outlet mesh filter
15
detachable and movable. Therefore, the outlet mesh filter
15
can be formed in the structure of closely attaching to the inner wall of the catalyst tower container
18
and to the catalyst charging port
19
.
Consequently, it is possible to certainly prevent the catalyst from flowing out through the outlet mesh filter
15
. Further, since the catalyst
14
can be certainly pushed down by the catalyst pushing-down mechanism
20
arranged inside the catalyst charging port
19
, occurrence of convection of the catalyst caused by the decomposed gas can be prevented.
According to the present invention, it is possible to provide a catalyst tower which can prevent the catalyst from flowing out to the system, and can prevent convection of the catalyst caused by the decomposed gas generated in the catalyst tower from occurring, and to provide a chemical decontamination liquid decomposing system having the catalyst tower.
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patent: 5236663 (1993-08-01), Alagy et al.
patent: 5449501 (1995-09-01), Luebke et al.
patent: 5961933 (1999-10-01), Casanave et al.
patent: 1107039 (1981-08-01), None
patent: 1318478 (1993-06-01), None
patent: 4-122192 (1992-04-01), None
patent: 6-190217 (1994-07-01), None
patent: 7-253496 (1995-10-01), None
patent: 8-1147 (1996-01-01), None
patent: 105295 (2000-04-01), None
patent: 98/47824 (1998-10-01), None
Anazawa Kazumi
Kobayashi Yasushi
Sakashita Motoaki
Yokota Katsuo
Heinrich Samuel M.
Hitachi , Ltd.
Mattingly Stanger & Malur, P.C.
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