CA1079685A - Ozone generator - Google Patents
Ozone generatorInfo
- Publication number
- CA1079685A CA1079685A CA255,795A CA255795A CA1079685A CA 1079685 A CA1079685 A CA 1079685A CA 255795 A CA255795 A CA 255795A CA 1079685 A CA1079685 A CA 1079685A
- Authority
- CA
- Canada
- Prior art keywords
- gas
- cooling
- ozonizing
- axes
- ozone generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Abstract
OZONE GENERATOR
Abstract of the Disclosure An ozone generator having a housing accommodating parallel-mounted ozonizing elements, each consisting of water-cooled in-ner and outer electrodes mounted coaxially with a constant gap through which passes the gas to be treated and in which an electric discharge is initiated. Located between the ozonizing elements along their axes are cooling chambers communicating with the gaps of the adjacent ozonizing elements. The inlet and outlet devices for passing the gas to be treated are so arranged in the housing that the gas passes through the ozonizing ele-ments in a direction across their axes.
Abstract of the Disclosure An ozone generator having a housing accommodating parallel-mounted ozonizing elements, each consisting of water-cooled in-ner and outer electrodes mounted coaxially with a constant gap through which passes the gas to be treated and in which an electric discharge is initiated. Located between the ozonizing elements along their axes are cooling chambers communicating with the gaps of the adjacent ozonizing elements. The inlet and outlet devices for passing the gas to be treated are so arranged in the housing that the gas passes through the ozonizing ele-ments in a direction across their axes.
Description
~ he present inventio~ relates to electronic and ionie device3 and~ more particularly, to ozo~e ge~erators.
~ nown in the prior art i~ an ozone ge~erator includi~g a houRiag accommodating outer water-cooled, ground~d tubular metal electrodes and inner electrodes inserted coaxial~
therein with a consta~t gap. Said inner elecbrodes are t~bes made of a dielectric material, such as glass, the inner sur~a-ces of said bubes havin~ a metal coati~g conLected to a high--~oltage sour¢e through s~ecial t~rminal devices. The housin4 aleo ha~ a devic0 for delivary and removal o~ the gas to be treated ana inlet and outlet pipe unions supplyins water to cool the outer electrodes. An oxygen-containi~g gas such as air i8 red in an a~ial dir~ction through the annular space between the outer electrodes and the dielectric tubes. ~he high voltage in the annular space gives rise to a silent discharge~ u~der the affect oi which part oi the oxygen is converted i~to ozone (cf. ~RG Pate~t ~o. 1,271,087~ c1.12, ~roup 13~12~ 1966).
~ disadvantage of the known ozone genera~sr i~ its limited input electric power ~hose maximum value is determi~ed by the temperature o~ the ga~ in the annular space~ said temperature `~
depending on the heat transfer between the ga~ and t~e cooli~g liquid.
When the marimum discharge power i8 inereased, the tempe-rature of the ga~ i~ the annular space sharp b rise~ up and
~ nown in the prior art i~ an ozone ge~erator includi~g a houRiag accommodating outer water-cooled, ground~d tubular metal electrodes and inner electrodes inserted coaxial~
therein with a consta~t gap. Said inner elecbrodes are t~bes made of a dielectric material, such as glass, the inner sur~a-ces of said bubes havin~ a metal coati~g conLected to a high--~oltage sour¢e through s~ecial t~rminal devices. The housin4 aleo ha~ a devic0 for delivary and removal o~ the gas to be treated ana inlet and outlet pipe unions supplyins water to cool the outer electrodes. An oxygen-containi~g gas such as air i8 red in an a~ial dir~ction through the annular space between the outer electrodes and the dielectric tubes. ~he high voltage in the annular space gives rise to a silent discharge~ u~der the affect oi which part oi the oxygen is converted i~to ozone (cf. ~RG Pate~t ~o. 1,271,087~ c1.12, ~roup 13~12~ 1966).
~ disadvantage of the known ozone genera~sr i~ its limited input electric power ~hose maximum value is determi~ed by the temperature o~ the ga~ in the annular space~ said temperature `~
depending on the heat transfer between the ga~ and t~e cooli~g liquid.
When the marimum discharge power i8 inereased, the tempe-rature of the ga~ i~ the annular space sharp b rise~ up and
- 2 -~ ':
, ., .: . . . . . . .
1~79685 this reduces the ozone yield and increases the energy con-sumption in the process of ozone generation.
An object of the present invention is to provide a device for efficient cooling of the gas in order to increase the ozone yield over the same area of the surface of the elec-trodes in the generator and to decrease the energy consumption needed for production of a unit of ozone.
This and other objects are obtained by providing an ozone generator including a housing and comprising: parallel-mounted ozonizing elements, each having coaxially arranged andseparated by a dielectric barrier liquid-cooled inner and outer tubular electrodes mounted with a constant gap through which passes the gas to be treated and in which an electric discharge is initiated: said tubular electrodes being ver-tically disposed, the axes of said tubular electrodes being disposed in a common plane; gas cooling chambers locat~d be-tween the adjacent ozonizing elements along their axes and communicating with the gaps of said ozonizing elements through gas passages- gas inlet and outlet means mounted 80 that the motion of the gas in said ozonizing elements is directed across their axes a means for applying a high-voltage current to said electrodes: means for delivery and removal of the cool-ing liquid for cooling said outer electrodes, means for del-ivery and removal of a cooling liquid for cooling said inner electrodes, said gases to be treated passing successively from one cell to another cell through an intermediate cooling chamber in the path between said cells.
It is expedient that the gas cooling chambers be provided with partitions mounted in parallel to the axes of the ozonizing elements to improve the heat transfer from the gas to the chamber walls.
- .;
- - , ~079685 It i~ also e~pedierlt that the partitions in the gas-cooliLg chambers be ~taggered for ~urther impro~ement o~ t~e heat transfer betwesn the gas and the chamber walls.
~ he pre~ent ~nven~ion i~ embodied i~ an ozone generstor, ~hich ma~es it possible to considerably impro~e the cooling of the ga~ flow bein~ heated comp~red to thc ~o~n ozo~e generators, ~nich allows the inpu~ electric power and~ there-fore~ the output ¢apacity o~ the gene~abor to be incr~ased, ;-ezone losses due to ther~al decomposition to be reduced and thc Gnergy consumption for the ozone generation to be decreasea on the average by 20-30%.
~ he inve~tio~ is ~urther desoribed by way o~ eYa~ple ~ith -reference to the accompa~ying dra~i~gs, in ~hichs ~ ig. 1 i8 a longitudinal seckional vie~ of an ozone gene-rator ac¢oIaing to the inYention~
}?ig. 2 i8 a section along line II-II in Fig~
Fig. 3 is a partial vie~ of the oæone generator ~ith stagerred partitions in the gas cooling ch~mber~. :
~ he ozone generatsr shown i~ ~?igs. 1 to 3 ha3 a metal housin~ ccommodabirg a set of para~ lel-mou~ted inter~al electrode~ 2 in the fo~m of metal cyli~drical tube~ with a dielectric coatirlg 3, e.g. glas~ enam~l~ on their outer sur-îace. ~he outer electrodeQ are formed b~ two herm~tically sealed metal plate~ ~ the hou~lngs a~ upper plate 4 and a lo~er plate 5 e~elop~ the i~er electrode3 2 with conætant ", " ;
-. :
g8p8 (electric dis¢har~e zones) 6 thu~ formiDæ parallel arranged ozo~izing elements with axe~ -1.
Bet~een the ozonizi~g eleme~t~, outside the eloctric dis-charge zones 6~ the plateg 4 and 5 for~ cooling chambers 7, which are provided ~ith partition~ 8 for impro~ing the h0at tra~er from the ga~ to bhe wall~ o~ tha plate~ 4 and 5.
The ~alls oî the hou~ing 1 of the ozo~e generator alld the wall~ ~ the plate~ 4 a~d 5 form chamberg 9 and 10 communicating hydraulically through tube~ (not shown) e~tend-ing throush the plate~ 4 and 5. Circulating in the chamberg 9 and 10 i8 a cooling liquid, e.g. ~atar, admitted through a :
connectins pipe 11 a~d di~charged throu4h a con~ectin~ pipe ~2.
The.i~itial gas i~ ~upplied to the electric di~char zo~e~ 6 through a collector chamber 13 with an i~let pipe union 14.while the ozonized ga~ i8 removed through a col-leator chamber 15 with a pipe union 16.
The inner electrodes 2 through u~io~ nuta 17 and sealing ga8~et8 1a are co~nected to the pipe union~ 19 and 19a of the manifolds 20 and 21 respecti~e b for deli~ery of the cooling liquid i~to the inner ~paces ~A~l o~ the electrode~ 2 and for removal this liquid there~rom. ~he in~er electrodes 2 are hermetically ~ealed by means o~ elastic sealing rings 22 in centri~g flanges 23 made of a dielectric material and secured o~ bhe side wall~ of the housing 1 through sealing g~skets 24.
: , . ~,.. . ;.-~7g68S
The inner electrodes 2 are fed with a high voltage from a high-voltage trans~ormer (not show~) throu&h a current-oon-ducting pin 26 secured on an in~ulator bushing 27 mounted on a protsctive easing 28 made o~ a dielectric material, e.g.
vinyl plastic~ and ~ecured on the housiDg 1. f ~he current-conducting pin 26 through a ~leYible conduc-tor 29 is electrically connected to the manifold 21, through which, a~ well as through the pipe unions 19 a~d 19a and the ~utz 17, high voltage is applied t~ bhe inner electrode~ 2.
~he plates 4 and 5 o~ the outer electrodss are grou~ded through the housing 1.
~ig. 3 illustrates ths ~taggered arrangement o~ the parti-tions 8a, 8b and 8c in the cooling chamber 7a. ~uch an ar-rangemont i~pro~es the heat tran~er between the gas a~d the cooling liguid.
~he ozo~e generator may also include a de~ic~ for preva~-ting a short circuit, for example, tubular coils of a di-electri¢ material (~ot shown) mounted before the inlet and outl~t pipe union~ 3~ an~ 3-1, when water is used a~ the coolin~
liquid. The evolute lengbh of the tubular coil i~ s~lected ~uch ~--thab the electric~l resi~ance of th~ water therein is su~fi-cie~t for pre~enting a 3hort circuit.
~he direction~ of motio~ of the gas and cooling li~uid i~ the ozone g~nerator are show~ by arrows in Fi4s. 1 and 2.
, , Aq sho~ in ~ig. 1, the motion oi the gas in the ozonizing element~ 2, 4, 5 i~ directed acro~s their axes 0~
The proposed ozo~e generatsr operates a~ follows.
A flo~ of an oY~gen-containi~g gas7 e.g. air~ to be treat-ed in the generator ia co~tinuou~ly forced throug~ the inlet pipe union 14 in~o the collector chamber 13, from which it enters the electric discharge zo~e~ 6.
While pas~ing through the electric discharge zone 6 an~
flo~ing around the inner electr0de 2~ tho ga~ is 3~bjectod to the actio~ o~ a silent di~cha~ge. The silent discharge appear~
in thQ gap~ 6 under bhe effect o~ a high voltage applied bet-ween the iDner electrode 2 with a dielectric coatin~ 3 and bhe grou~ded plate~ 4 and 5 ~ormi~g the outer electrode. Under the actio~ o~ the electric discharge~ o~en i~ partially çon~erted into ozone. In thi# case, the ga~ i~ heated and, in order to prevent thermal decompo~ition of the ozo~e~ it i8 ~ubjectad to forosd cooli~g b~ bhe cooliDg liquid circulating in the ohambers 9, 10 and in the space "A" o~ the inner electrode~ 2.
~ he gas eoming out from the discharge zone 6 t~rough the pas6ages "al' en~ers the chamber 7 or 7a, where it i~ cooled QnC~ again to provide thermal stabilization of the generated ozone. ~hen, bhe ga~ passe~ through the pas~age 'la" and enters the discha~e zone o~ the ne~b ozonizing element and again pas3es through the cooling chamber 7 or 7a. Whe~ the gas repeatedly pas~es through t~ disc~arge zone~ ~ and tho ., , . ~ ~
,: " ~,, . ,. , ~ ,, ,., ~ . , :
cooling ch~mbers 7 or 7a~ its temperature iæ mai~tained at an optimum le~el so that the ozone yield is much increa~ed, ~ !
~h~le the thermal decomposition o~ ozone iæ m nimized. ~he ozonized ~;as come~ out Irom the g~nerator throu~h the col-lector chamber 15 and the pipe union 16.
.
, , . . ~ ,.
. .
,.. , ~ : .
,
, ., .: . . . . . . .
1~79685 this reduces the ozone yield and increases the energy con-sumption in the process of ozone generation.
An object of the present invention is to provide a device for efficient cooling of the gas in order to increase the ozone yield over the same area of the surface of the elec-trodes in the generator and to decrease the energy consumption needed for production of a unit of ozone.
This and other objects are obtained by providing an ozone generator including a housing and comprising: parallel-mounted ozonizing elements, each having coaxially arranged andseparated by a dielectric barrier liquid-cooled inner and outer tubular electrodes mounted with a constant gap through which passes the gas to be treated and in which an electric discharge is initiated: said tubular electrodes being ver-tically disposed, the axes of said tubular electrodes being disposed in a common plane; gas cooling chambers locat~d be-tween the adjacent ozonizing elements along their axes and communicating with the gaps of said ozonizing elements through gas passages- gas inlet and outlet means mounted 80 that the motion of the gas in said ozonizing elements is directed across their axes a means for applying a high-voltage current to said electrodes: means for delivery and removal of the cool-ing liquid for cooling said outer electrodes, means for del-ivery and removal of a cooling liquid for cooling said inner electrodes, said gases to be treated passing successively from one cell to another cell through an intermediate cooling chamber in the path between said cells.
It is expedient that the gas cooling chambers be provided with partitions mounted in parallel to the axes of the ozonizing elements to improve the heat transfer from the gas to the chamber walls.
- .;
- - , ~079685 It i~ also e~pedierlt that the partitions in the gas-cooliLg chambers be ~taggered for ~urther impro~ement o~ t~e heat transfer betwesn the gas and the chamber walls.
~ he pre~ent ~nven~ion i~ embodied i~ an ozone generstor, ~hich ma~es it possible to considerably impro~e the cooling of the ga~ flow bein~ heated comp~red to thc ~o~n ozo~e generators, ~nich allows the inpu~ electric power and~ there-fore~ the output ¢apacity o~ the gene~abor to be incr~ased, ;-ezone losses due to ther~al decomposition to be reduced and thc Gnergy consumption for the ozone generation to be decreasea on the average by 20-30%.
~ he inve~tio~ is ~urther desoribed by way o~ eYa~ple ~ith -reference to the accompa~ying dra~i~gs, in ~hichs ~ ig. 1 i8 a longitudinal seckional vie~ of an ozone gene-rator ac¢oIaing to the inYention~
}?ig. 2 i8 a section along line II-II in Fig~
Fig. 3 is a partial vie~ of the oæone generator ~ith stagerred partitions in the gas cooling ch~mber~. :
~ he ozone generatsr shown i~ ~?igs. 1 to 3 ha3 a metal housin~ ccommodabirg a set of para~ lel-mou~ted inter~al electrode~ 2 in the fo~m of metal cyli~drical tube~ with a dielectric coatirlg 3, e.g. glas~ enam~l~ on their outer sur-îace. ~he outer electrodeQ are formed b~ two herm~tically sealed metal plate~ ~ the hou~lngs a~ upper plate 4 and a lo~er plate 5 e~elop~ the i~er electrode3 2 with conætant ", " ;
-. :
g8p8 (electric dis¢har~e zones) 6 thu~ formiDæ parallel arranged ozo~izing elements with axe~ -1.
Bet~een the ozonizi~g eleme~t~, outside the eloctric dis-charge zones 6~ the plateg 4 and 5 for~ cooling chambers 7, which are provided ~ith partition~ 8 for impro~ing the h0at tra~er from the ga~ to bhe wall~ o~ tha plate~ 4 and 5.
The ~alls oî the hou~ing 1 of the ozo~e generator alld the wall~ ~ the plate~ 4 a~d 5 form chamberg 9 and 10 communicating hydraulically through tube~ (not shown) e~tend-ing throush the plate~ 4 and 5. Circulating in the chamberg 9 and 10 i8 a cooling liquid, e.g. ~atar, admitted through a :
connectins pipe 11 a~d di~charged throu4h a con~ectin~ pipe ~2.
The.i~itial gas i~ ~upplied to the electric di~char zo~e~ 6 through a collector chamber 13 with an i~let pipe union 14.while the ozonized ga~ i8 removed through a col-leator chamber 15 with a pipe union 16.
The inner electrodes 2 through u~io~ nuta 17 and sealing ga8~et8 1a are co~nected to the pipe union~ 19 and 19a of the manifolds 20 and 21 respecti~e b for deli~ery of the cooling liquid i~to the inner ~paces ~A~l o~ the electrode~ 2 and for removal this liquid there~rom. ~he in~er electrodes 2 are hermetically ~ealed by means o~ elastic sealing rings 22 in centri~g flanges 23 made of a dielectric material and secured o~ bhe side wall~ of the housing 1 through sealing g~skets 24.
: , . ~,.. . ;.-~7g68S
The inner electrodes 2 are fed with a high voltage from a high-voltage trans~ormer (not show~) throu&h a current-oon-ducting pin 26 secured on an in~ulator bushing 27 mounted on a protsctive easing 28 made o~ a dielectric material, e.g.
vinyl plastic~ and ~ecured on the housiDg 1. f ~he current-conducting pin 26 through a ~leYible conduc-tor 29 is electrically connected to the manifold 21, through which, a~ well as through the pipe unions 19 a~d 19a and the ~utz 17, high voltage is applied t~ bhe inner electrode~ 2.
~he plates 4 and 5 o~ the outer electrodss are grou~ded through the housing 1.
~ig. 3 illustrates ths ~taggered arrangement o~ the parti-tions 8a, 8b and 8c in the cooling chamber 7a. ~uch an ar-rangemont i~pro~es the heat tran~er between the gas a~d the cooling liguid.
~he ozo~e generator may also include a de~ic~ for preva~-ting a short circuit, for example, tubular coils of a di-electri¢ material (~ot shown) mounted before the inlet and outl~t pipe union~ 3~ an~ 3-1, when water is used a~ the coolin~
liquid. The evolute lengbh of the tubular coil i~ s~lected ~uch ~--thab the electric~l resi~ance of th~ water therein is su~fi-cie~t for pre~enting a 3hort circuit.
~he direction~ of motio~ of the gas and cooling li~uid i~ the ozone g~nerator are show~ by arrows in Fi4s. 1 and 2.
, , Aq sho~ in ~ig. 1, the motion oi the gas in the ozonizing element~ 2, 4, 5 i~ directed acro~s their axes 0~
The proposed ozo~e generatsr operates a~ follows.
A flo~ of an oY~gen-containi~g gas7 e.g. air~ to be treat-ed in the generator ia co~tinuou~ly forced throug~ the inlet pipe union 14 in~o the collector chamber 13, from which it enters the electric discharge zo~e~ 6.
While pas~ing through the electric discharge zone 6 an~
flo~ing around the inner electr0de 2~ tho ga~ is 3~bjectod to the actio~ o~ a silent di~cha~ge. The silent discharge appear~
in thQ gap~ 6 under bhe effect o~ a high voltage applied bet-ween the iDner electrode 2 with a dielectric coatin~ 3 and bhe grou~ded plate~ 4 and 5 ~ormi~g the outer electrode. Under the actio~ o~ the electric discharge~ o~en i~ partially çon~erted into ozone. In thi# case, the ga~ i~ heated and, in order to prevent thermal decompo~ition of the ozo~e~ it i8 ~ubjectad to forosd cooli~g b~ bhe cooliDg liquid circulating in the ohambers 9, 10 and in the space "A" o~ the inner electrode~ 2.
~ he gas eoming out from the discharge zone 6 t~rough the pas6ages "al' en~ers the chamber 7 or 7a, where it i~ cooled QnC~ again to provide thermal stabilization of the generated ozone. ~hen, bhe ga~ passe~ through the pas~age 'la" and enters the discha~e zone o~ the ne~b ozonizing element and again pas3es through the cooling chamber 7 or 7a. Whe~ the gas repeatedly pas~es through t~ disc~arge zone~ ~ and tho ., , . ~ ~
,: " ~,, . ,. , ~ ,, ,., ~ . , :
cooling ch~mbers 7 or 7a~ its temperature iæ mai~tained at an optimum le~el so that the ozone yield is much increa~ed, ~ !
~h~le the thermal decomposition o~ ozone iæ m nimized. ~he ozonized ~;as come~ out Irom the g~nerator throu~h the col-lector chamber 15 and the pipe union 16.
.
, , . . ~ ,.
. .
,.. , ~ : .
,
Claims (3)
1. An ozone generator including a housing comprising:
parallel-mounted ozonizing elements, each having coaxially arranged and separated by a dielectric barrier liquid-cooled inner and outer tubular electrodes mounted with a constant gap through which passes the gas to be treated and in which an electric discharge is initiated; said tubular electrodes being vertically disposed, the axes of said tubular electrodes being disposed in a common plane; gas cooling chambers loc-ated between the adjacent ozonizing elements along their axes and communicating with the gaps of said ozonizing ele-ments through gas passages; gas inlet and outlet means mount-ed so that the motion of the gas in said ozonizing elements is directed across their axes: a means for applying a high-voltage current to said electrodes; means for delivery and removal of the cooling liquid for cooling said outer elec-trodes; means for delivery and removal of a cooling liquid for cooling said inner electrodes; said gases to be treated passing successively from one cell to another cell through an intermediate cooling chamber in the path between said cells.
parallel-mounted ozonizing elements, each having coaxially arranged and separated by a dielectric barrier liquid-cooled inner and outer tubular electrodes mounted with a constant gap through which passes the gas to be treated and in which an electric discharge is initiated; said tubular electrodes being vertically disposed, the axes of said tubular electrodes being disposed in a common plane; gas cooling chambers loc-ated between the adjacent ozonizing elements along their axes and communicating with the gaps of said ozonizing ele-ments through gas passages; gas inlet and outlet means mount-ed so that the motion of the gas in said ozonizing elements is directed across their axes: a means for applying a high-voltage current to said electrodes; means for delivery and removal of the cooling liquid for cooling said outer elec-trodes; means for delivery and removal of a cooling liquid for cooling said inner electrodes; said gases to be treated passing successively from one cell to another cell through an intermediate cooling chamber in the path between said cells.
2. An ozone generator as claimed in claim 1, in which said gas cooling chambers have partitions mounted in parallel to the axes of said ozonizing elements.
3. An ozone generator as claimed in claim 1, in which said partitions are staggered in said cooling chambers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA255,795A CA1079685A (en) | 1976-06-28 | 1976-06-28 | Ozone generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA255,795A CA1079685A (en) | 1976-06-28 | 1976-06-28 | Ozone generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1079685A true CA1079685A (en) | 1980-06-17 |
Family
ID=4106295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA255,795A Expired CA1079685A (en) | 1976-06-28 | 1976-06-28 | Ozone generator |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1079685A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108834299A (en) * | 2018-05-23 | 2018-11-16 | 北京清源中科环保科技有限公司 | A kind of plasma fence |
-
1976
- 1976-06-28 CA CA255,795A patent/CA1079685A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108834299A (en) * | 2018-05-23 | 2018-11-16 | 北京清源中科环保科技有限公司 | A kind of plasma fence |
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| MKEX | Expiry |