Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – With means applying electromagnetic wave energy or...
Reexamination Certificate
2000-11-28
2002-12-17
Nguyen, Nam (Department: 1741)
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
With means applying electromagnetic wave energy or...
C422S186110, C422S186200
Reexamination Certificate
active
06495109
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an ozone supplying apparatus. More particularly, it relates to an ozone supplying apparatus for producing and storing ozone by using electricity which is capable of supplying stored ozone continuously or intermittently at specified ratios to an ozone consuming object.
There has been conventionally known an intermittent type ozone supplying apparatus for temporarily storing ozone which comprises the following components as shown in FIG.
15
: an ozone generator
50
, an oxygen supply source
51
, a circulating blower
52
, an adsorption/desorption tower
53
for temporarily storing generated ozone, a cooling source
54
for cooling the adsorption/desorption tower
53
, a heating source
55
for heating the adsorption/desorption tower
53
, a water flow ejector
56
for taking ozone out from the adsorption/desorption tower
53
through decompression and suction, and a group of switch valves
57
a
to
57
g
. The adsorption/desorption tower
53
is of double cylinder type as shown in
FIG. 16
, wherein an inner cylinder
58
is filled with an ozone adsorbent
59
and is further provided with a spiral heat transferring pipe
60
for heating (refer to Japanese Examined Patent Publication No. 64484/1985). A cooling piping
61
through which a cooling medium is made to flow is wound around an outer surface of the inner cylinder
58
in a spiral manner. On the other hand, an outer cylinder
63
is filled with a heating medium
62
. Silica gel is generally used as the adsorbent
59
, and ethylene glycol or alcohol group as the heating medium
62
. Note that numeral
53
a
is an inlet of the heating medium
62
and
53
b
an outlet of the heating medium
62
. The circulating blower
52
, ozone generator
50
and adsorption/desorption tower
53
constitute, in this order, a single circulating system.
Operations will now be explained. There are two operations, namely an adsorbing operation and a desorbing operation of ozone.
The adsorbing operation will first be explained. Oxygen is supplied by the oxygen supply source
51
through an inlet
53
c
so that the pressure in the circulating system is always a constant pressure. At this time, the pressure is normally maintained at 1.5 kg/cm
2
. When oxygen is made to flow in the circulating system by the circulating blower
52
while the switch valves
57
c
and
57
d
are in an opened condition, a part of the oxygen is converted into ozone through silent discharge to generate ozonized oxygen while passing through the discharge space of the ozone generator
50
, and the ozonized oxygen is then transferred to the adsorption/desorption tower
53
. The adsorbent in the adsorption/desorption tower
53
selectively adsorbs ozone, and the remaining oxygen is returned to the circulating blower
52
through the switch valve
57
c
. Oxygen which has been consumed as ozone is supplemented through the oxygen supply source
51
. At this time, the temperature of the ozone adsorbent is cooled by the cooling source
54
to not more than −30° C. This is because the ozone adsorbing amount of the ozone adsorbent largely varies depending on the temperature. That is, by lowering the temperature, the ozone adsorbing amount increases and by raising the temperature, the ozone adsorbing amount decreases. Therefore, when adsorbing ozone, the adsorbent is cooled, and when desorbing ozone, the temperature of the adsorbent is raised.
When the adsorbent in the adsorption/desorption tower
53
has adsorbed ozone to approach the ozone saturation adsorption amount, the desorbing operation of ozone is performed. In the desorbing operation, operations of the ozone generator
50
, the circulating blower
52
and cooling source
54
are terminated and the switch valves
57
a
to
57
d
are closed. Thereafter, the heating source
55
and water flow ejector
56
start their operations and switch valves
57
e
to
57
g
are opened. In order to enable easy desorption of ozone adsorbed at the adsorbent, heat of the heating medium
62
which has been injected from the heating source
55
through inlet
53
a
is applied from both the inner and outer surfaces of the inner cylinder
58
to raise temperature of the adsorbent
59
. Then, by decompressing for sucking ozone in the adsorption/desorption tower
53
at one stroke to the outlet
53
d
through the water flow ejector
56
, ozone is made to disperse and dissolve into water in the water flow ejector
56
which is then sent as ozone water to places where ozone is used. By decompression for suction, the achieved pressure in the adsorption/desorption tower
53
is made to be approximately 0.1 kg/cm
2
(absolute pressure). When the desorbing period is completed in this way, the process returns to the initial adsorbing operation and is continuously repeated.
A conventional intermittent type ozone supplying apparatus is disadvantaged in that, by increasing the amount of filled silica gel for storing a large quantity of ozone, time required for cooling silica gel is increased so that ozone can not be efficiently stored, and it is also disadvantaged in that, by increasing the number of arranged ozone adsorption/desorption towers, the installation area is increased or the operation of the apparatus becomes complicated. Further, since the heating source and cooling source are separately arranged, the apparatus is made complicated and maintenance of silica gel in the adsorption/desorption towers is made difficult.
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide an ozone supplying apparatus which is capable of shortening time required for cooling the ozone adsorbent, capable of efficiently storing ozone, and which can be arranged to be compact.
SUMMARY OF THE INVENTION
An ozone supplying apparatus according to the present invention comprises an ozone generator for generating ozonized oxygen from raw material oxygen, an adsorption/desorption device for adsorbing and storing ozone from ozonized oxygen and desorbing the ozone, and an ozone desorbing means for desorbing the adsorbed and stored ozone for supply, the apparatus being arranged to return oxygen to the ozone generator after desorbing ozone therefrom by the adsorption/desorption device, and to desorb and supply ozone from the adsorption/desorption device, wherein the adsorption/desorption device includes at least one ozone storing portion filled with an adsorbent, and a liquid storing portion for filling a temperature medium to an outer peripheral surface of the ozone storing portion.
The ozone storing portion might be arranged to be in the liquid storing portion.
The ozone storing portion might be made in a form of a pipe which is either of cylindrical or of conical shape.
The ozone supplying apparatus might further include an ozonized oxygen channel in which a distance for ozonized oxygen to flow in the ozone storing portion is longer than an average distance between a central point of the ozone storing portion and a surface thereof at the time of adsorbing ozone, and a distance for ozonized oxygen to flow in the ozone storing portion is shorter than the average distance between the central point of the ozone storing portion and the surface thereof.
An adsorbent to be filled into the ozone storing portion might be of an integrated type corresponding to a shape of the ozone storing portion and is of porous material.
The adsorption/desorption device might be disposed in a gas charging vessel for charging gas therein and a pressure adjusting means might be provided for adjusting a gas pressure in the gas charging vessel.
Gas pressure in the gas charging vessel might be made to be vacuum at the time of storing ozone.
A branching line might be formed in an ozone circulating line provided between the ozone generator and the adsorption/desorption device, and the branching line is connected to a gas aspirating means for aspirating gas in the adsorption/desorption device and a gas storing tank for temporarily storing gas therein.
An oxygen refining d
Amitani Hisao
Hirotsuji Junji
Nakayama Shigeki
Ozawa Tateki
Tanimura Yasuhiro
Mitsubishi Denki & Kabushiki Kaisha
Nicolas Wesley A.
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