GB2142839A - Pressure reactor - Google Patents
Pressure reactor Download PDFInfo
- Publication number
- GB2142839A GB2142839A GB08416665A GB8416665A GB2142839A GB 2142839 A GB2142839 A GB 2142839A GB 08416665 A GB08416665 A GB 08416665A GB 8416665 A GB8416665 A GB 8416665A GB 2142839 A GB2142839 A GB 2142839A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- pressure vessel
- pressure
- chamber
- reactor
- 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.)
- Granted
Links
- 238000001914 filtration Methods 0.000 claims abstract description 19
- 238000007790 scraping Methods 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000012065 filter cake Substances 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000003599 detergent Substances 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 claims description 2
- 238000010408 sweeping Methods 0.000 claims description 2
- 238000009827 uniform distribution Methods 0.000 claims 1
- 238000005189 flocculation Methods 0.000 abstract description 8
- 230000016615 flocculation Effects 0.000 abstract description 8
- 239000007787 solid Substances 0.000 abstract description 8
- 239000000706 filtrate Substances 0.000 abstract description 6
- 238000012546 transfer Methods 0.000 abstract description 6
- 238000005342 ion exchange Methods 0.000 abstract description 4
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000001311 chemical methods and process Methods 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 239000004744 fabric Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000013543 active substance Substances 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 239000012429 reaction media Substances 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012994 industrial processing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
- B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4631—Counter-current flushing, e.g. by air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/117—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration
- B01D29/118—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for outward flow filtration open-ended
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
- B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/03—Processes of filtration using flocculating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/28—Position of the filtering element
- B01D2201/287—Filtering elements with a vertical or inclined rotation or symmetry axis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
In the pressure chamber (1) there is disposed a filter chamber (9) into which projects a rotating support shaft (16). Arms (17) protrude from the support shaft (16) and carry scraping brushes (18). A down pipe (13) adjoins the filter chamber (9) and leaves the pressure vessel (1) at the bottom and is closed by a discharge valve (14). A tubular reactor (23) is mounted on the outer wall of the pressure vessel (1). This tubular reactor (23) is connected via a transfer pipe (25) to the filter (11). Flocculation can be carried out in the tubular reactor (23), whereupon the mixture is admitted into the filter (11). The solid matter is separated in the filter (11) and is scraped off of the filter screen by continuously rotating scraping brushes (18) and is fed into the down pipe (13). The filtrate flows into the pressure-vessel interior (2) so as to be subjected therein to fine filtration, adsorption or ion exchange or further physico- chemical processes, according to the application. <IMAGE>
Description
SPECIFICATION
Pressure reactor
The invention relates to a pressure reactor with a pressure vessel containing a reaction chamber and with connections for the inlet and outlet of process-industry and cleansing media and for the connection of monitoring instruments. In the treatment of fluid substances in the process industry, wherein filtration is effected at least once, hitherto the filtration has been carried out in a separate apparatus. For example, in the industrial processing of aqueous substances, such as waste water, at least two apparatuses have been used, for example at least one mechanical filter and a multi-layer filter. In waste-water processing, coarse filters have been used in combination with flocculation and, subsequently, purification in activated-carbon or multi-layer filters used as separate apparatus.
Moreover, during coarse and fine filtration, a continuously or discontinuously operating coarse filter, with or without self-cleaning mechanism, is used together with a deep filter provided separately therefrom, e.g. a sand or gravel filter. In ion-exchange processes, particularly in the removal of metal ions, ion exchangers have been used in the form of coarse filters of separate apparatus. The above are only some examples from process industry, wherein the filter and the downstream process industry applicance each form a separate apparatus. This necessitates both a correspondingly large space requirement for installation in a respective plant and comparatively high production costs for the each of the two separate apparatuses.
It is then the object of the invention to obviate the aforementioned disadvantages and to devise an apparatus which enables a plurality of physical or physico-chemical processes to be carried out in a single apparatus.
The pressure reactor according to the invention is characterised in that in the interior of the pressure vessel there is disposed a selfcleaning filter device with a filter chamber and a replaceable filter basket including a filter, which on the inflow side is connected to the inlet connection for the material to be treated in the pressure reactor so a to filter it before admission into the reaction chamber, which filtering device has a mechanical cleaning device with scraping members sweeping over the filter basket and has a collecting funnel for the scraped off filter cake, to which is connected a down pipe for discharging the scraped off filter cake from the pressure vessel, which filter chamber is connected securely to the pressure vessel, on the one hand, directly and, on the other hand, via the down pipe.
According to the particular embodiment of this apparatus, it is possible to carry out, for example, coarse and fine filtration, filtration and adsorption, filtration and ion exchange, filtration and stripping, as well as filtration and oxidation/reduction in both homogeneous and heterogeneous phase.
An embodiment of the invention will be described in more detail below with reference to the drawings and by way of example, wherein:
Figure 1 shows diagrammatically a pressure reactor, and
Figure 2 shows a side view of the pressure reactor illustrated in Fig. 1.
In the drawings the reference numeral 1 designates a pressure vessel. This pressure vessel can be made of various materials, e.g.
of metallic materials or of plastics material.
One exemplified embodiment is designed for an internal pressure of 0.6 MPa (6 bars) and with a diameter of 1,000 mm has an internal volume of 2,000 litres. The pressure vessel 1 has two manholes 3 and 4 provided with a blank flange. In the form shown as an upright circular cylinder, the pressure vessel 1 is provided with support legs 5. Close to the leg 5 situated on the right in Fig. 1 there is disposed a plate 6 which serves to carry valves, cocks, monitoring instruments, etc.
(not shown). In the lower region of the pressure-vessel interior 2 there is installed a nozzle plate 7 which carries nozzles 8. In the upper region of the vessel interior 2 there is provided a filter chamber 9 including a filter basket 10 and a filter 11. A collecting funnel 12 adjoins the lower end of the filter basket 10, which collecting funnel 12 is connected to a down pipe 13 which extending vertically passes out of the pressure-vessel interior 2 and at the bottom is closed by a shut-off and discharge valve 14. The filter chamber 9 basically comprises a cylindrical perforated metal sheet which in the illustrated embodiment is 4 mm thick, for example. At the top the filter chamber has a flange 28 on which a motor 19 is flange-mounted. Between the motor 19 and the flange 28 the reference numeral 20 indicates an aeration and venting portion.If necessary, a speed-changing gear is also provided here.
In this embodiment the filter basket 10 is made in known manner from a cylindrical perforated metal sheet support screen and a fine wire cloth is drawn thereover. Depending upon the intended filtration application, the wire cloth has different mesh sizes. The filter basket is thus arranged so that it can be replaced.
The motor 19 drives directly or via a transmission a support shaft 16 projecting into the filter chamber 9. Arms 17 protrude from this support shaft 16, each arm carrying a scraping brush 18. According to the intended application, instead of the scraping brushes 18 it is possible to provide other scraping members acting in the manner of a blade. The scraping brushes 18 (or scraping members) are applied against the inside of the filter. Four arms 17 and correspondingly four scraping brushes 18 are provided. The arms 17 are each disposed offset by 90 to each other. It is evident from the drawing that in this embodiment four scraping brushes 18 are provided.They are of curved shape in conformity with the inner surfaces of the filter and they each form with the perpendicular to the support shaft 16 an angle of 24 and are so arranged in relation to the direction of rotation of the support shaft 16 that a continuous scraping of the filter cake from the filter, i.e.
from the screen cloth, takes place and the filter cake is urged continuously downwards towards the collecting funnel 12 and thus into the down pipe 13 which serves as a filter sludge collecting pipe.
The pressure vessel 1 is further provided with a connection stub 21 for the outflowing back4lushing water which is fed through the nozzles 8. The stub 22 is intended for feeding a gaseous cleansing agent. A small connection stub 29 serves to accommodate safety fittings, for example a pressure detector, safety valve, manometer or an aeration and venting valve, these fittings being provided irrespective of the particular application. A further small stub 27 serves for the insertion of levelmeasuring instruments in the case of automation of the back-flushing procedure. The reference numeral 25 basically designates the inlet to the pressure vessel, which inlet constitutes a transfer pipe 25 in the illustrated embodiment, as will be explained below. Finally, reference numeral 30 designates the outlet from the pressure vessel 1.
In the illustrated embodiment, as indicated in Fig. 2, a reaction stage is connected upstream of the pressure reactor 1 with the selfcleaning fine filter. This reaction stage is a tubular reactor 23 which at the bottom is provided with an inflow pipe 24 and at the top is connected to the pressure vessel 1 via the transfer pipe 25. In accordance with the illustrated embodiment, the nest of tubes is disposed vertically at the outside of the pressure vessel 1.
The mode of operation of the pressure reactor will be described generally in the following. The medium to be treated in the process industry, to which one or more reaction components have been added possibly for carrying out a chemical reaction, enters through the inflow pipe 24 into the lower end of the tubular reactor 23. The desired reaction takes place in the tubular reactor 23 after a sufficient period of time therein. After leaving the tubular reactor 23, the reaction products flow through the transfer pipe 25 and from there into the filter chamber 9, in which the solid constituents of the reaction mixture are filtered out.These solids, which are retained on the screen-like filter 11, are continuously scraped off by the rotating scraping brushes 18 and, because of the above-described inclined arrangement thereof, they are discharged towards the collecting funnel 12 and thus into the down pipe 13. The reaction medium now freed of the solids passes through the filter 11 and passes from this into the pressure-vessel interior 2 and here flows through an active substance, dependent upon the specified process, on which a physicochemical process takes place. Subsequently, the reaction medium flows out through the nozzle plate 7, which is welded in place at the lower end of the pressure vessel 1, and leaves the pressure vessel 1 through the outlet 30.
The solid matter accumulated in the down pipe 13 is discharged by periodic opening of the shut-off and discharge valve 14 at the bottom end of the down pipe 13. Beneath this valve 14 there is disposed a sludge tank 15 which, optionally, is provided with a fine filer 31, for example a gauze fabric. The cleansing agent necessary for the automatic regeneration of a respective spent active substance enters the lower portion of the pressure vessel 1 through the stub 30 during backflushing and is distributed through the nozzles 8 uniformly over the entire cross-section of the pressure vessel 1. The cleaning agent charged after passing through the active substance leaves the pressure vessel 1 through the stub 21. The parts of the installation necessary for the back-flushing operation are of conventional type and are generally known and for this reason they will not be described further.
Some practical examples of the pressure reactor will now be described in detail below.
1) Flocculation, filtration an adsorption
The liquid to be purified flows through the duct 33 to the feed pump 32 which is connected directly upstream of the inflow pipe 24. A flocculating agent is fed through the duct 34 in measured quantities to the liquid in duct 33 to be purified, at a location upstream of the feed pump 32, and is then homogenised in the reaction stage, that is the tubular reactor 23. The transfer then take places through the transfer pipe 25 into the filter chamber 9 and thus into the pressure vessel 1. The solid matter present is separated in the filter 11. The filtrate flows out of the filter basket 10 into the pressure-vessel interior 2 and through an adsorbent disposed therein.
It is to be noted that, according to the state of the art, the liquid to be purified was fed into a first apparatus, namely a reaction vessel, in which it had to remain for a certain period. The mixture was then pumped out of this reaction vessel via a pump through a coarse filter to a second apparatus, in which the solid matter was separated. The filtrate was then fed to a third apparatus which was filled with the above-mentioned adsorbent.
This operation hitherto requiring three apparatuses is carried out in only one compact apparatus in the embodiment according to the invention.
2) Flocculation, filtration and ion exchange
The individual process steps are here the same as described above. However, instead of an adsorbent the pressure-vessel interior 2 contains an ion-exchange resin. The filtrate freed of solid matter by the self-cleaning filter
11 flows from the filter 11 directly through the ion-exchange resin.
3) Flocculation, coarse filtration and deep filtration
The sequence of the individual process steps is the same as that described above.
One or more filter beds is/are disposed in the pressure-vessel interior 2 and they serve as fine or multi-layer filter respectively. After the flocculation in the tubular reactor 23 and the coarse filtration in the filter 11, the filtrate flows through the filter beds, deep-filtered, flows out of the pressure-vessel interior 2 through the outlet 30.
4) Flocculation, filtration and oxidation
For the purpose a catalytic substance is disposed in the pressure-vessel interior 2. The flocculation takes place in the tubular reactor 23 and then the fine filtration takes place in the filter 11. After passing through the filter
11, the filtrate flows directly through the catalytic substance in which the oxidation reaction takes place.
According to the state of the art, the abovementioned process steps were hitherto each carried out in a separate apparatus. With the pressure reactor designed according to the invention it is now possible to carry out the various process steps using only a single apparatus which is significantly more advantageous both in respect of installation costs and maintenance costs than was previously possible.
Claims (5)
1. A pressure reactor with a pressure vessel containing a reaction chamber and with connections for the inlet and outlet of processindustry and cleaning media and for the connection of monitoring instruments, wherein in the interior of the pressure vessel there is disposed a self-cleaning filter device with a filter chamber and a replaceable filter basket including a filter, which on the inflow side is connected to the inlet connection for the material to be treated in the pressure reactor so as to filter it before admission into the reaction chamber, which filtering device has a mechanical cleaning device with scraping members sweeping over the filter basket and has a collecting funnel for the scraped off filter cake, to which is connected a down pipe for discharging the scraped off filter cake from the pressure vessel, which filter chamber is connected securely to the pressure vessel, on the one hand, directly and, on the other hand, via the down pipe.
2. A pressure reactor as claimed in Claim 1, wherein the filter chamber is rotationally symmetrical with the replaceable filter basket including the filter, a motor is mounted on the pressure vessel, which motor is in driving connection with a support shaft passing axially through the filter chamber and carrying the scraping members, which scraping members have scraping brushes connected to the support shaft via arms, which scraping brushes extend so inclined relative to the filter-chamber axis that scraped off filter-cake material is urged towards the collecting funnel, and the down pipe has an end portion projecting from the pressure vessel, which end portion is provided with a shut-off valve intended for the periodic discharge of the scraped of filter-cake material into a sludge tank disposed thereunder.
3. A pressure reactor as claimed in Claim 1, wherein a nest of tubes forming a reaction stage is connected with the outside of the pressure vessel, and the outlet of the tubular reactor formed by the nest of tubes is connected to the inlet connection of the pressure vessel.
4. A pressure reactor as claimed in Claim
1, wherein a nozzle plate is disposed inside the pressure vessel and serves for the uniform distribution of a cleansing agent admitted for back-flushing.
5. A pressure reactor substantially as herein described with reference to and as shown in the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH3603/83A CH653570A5 (en) | 1983-06-30 | 1983-06-30 | PRESSURE REACTOR. |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8416665D0 GB8416665D0 (en) | 1984-08-01 |
| GB2142839A true GB2142839A (en) | 1985-01-30 |
| GB2142839B GB2142839B (en) | 1987-07-08 |
Family
ID=4259544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08416665A Expired GB2142839B (en) | 1983-06-30 | 1984-06-29 | Pressure reactor |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH653570A5 (en) |
| DE (1) | DE3325203A1 (en) |
| FR (1) | FR2548047B1 (en) |
| GB (1) | GB2142839B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5510037A (en) * | 1993-02-12 | 1996-04-23 | Tastayre; Gilles | Regeneration of used cleaning solution |
| EP1118367A1 (en) * | 1998-06-25 | 2001-07-25 | Ebara Corporation | Coagulation reaction device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT394542B (en) * | 1990-01-03 | 1992-04-27 | Schrems Emil | Process and apparatus for desalting salt-ion-loaded liquids |
| US5370791A (en) * | 1991-08-22 | 1994-12-06 | G A Industries, Inc. | Backwashable self-cleaning strainer |
| US5401396A (en) * | 1991-08-22 | 1995-03-28 | Ga Industries Inc. | Self-cleaning stationary basket strainer |
| CN109954314A (en) * | 2017-12-26 | 2019-07-02 | 宜兴市兴南复合材料厂有限公司 | Resin filtering device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB568189A (en) * | 1943-06-15 | 1945-03-22 | Yosef Zarecki | Improvements in or relating to filters |
| GB1093016A (en) * | 1963-11-11 | 1967-11-29 | Georges Zwicky | Improvements in or relating to filtering apparatus |
| GB2119670A (en) * | 1982-03-08 | 1983-11-23 | Kuri Chem Eng | Continuous filter |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR5530E (en) * | 1905-03-22 | 1906-05-02 | Charles Constant Leclaire | Filter for automatic and continuous formation and evacuation of solid deposits |
| US2408741A (en) * | 1944-08-11 | 1946-10-08 | Hajoca Corp | Self-cleaning straining device |
| US3429442A (en) * | 1963-10-08 | 1969-02-25 | Cheskolovenska Akademie Ved | Pressurized device for water treatment |
| DE1536876A1 (en) * | 1967-01-25 | 1970-03-12 | Oscar Pauser | Filter system for pool water |
| DE2043845A1 (en) * | 1970-09-04 | 1972-03-09 | Flach, Rolf, 7031 Gärtringen | Rapid water purifier - using rotating drum filter |
| US3896005A (en) * | 1973-09-13 | 1975-07-22 | Hector M Zuccolotto | Filtering and debris removing apparatus for cleaning a sea water stream |
-
1983
- 1983-06-30 CH CH3603/83A patent/CH653570A5/en not_active IP Right Cessation
- 1983-07-13 DE DE19833325203 patent/DE3325203A1/en active Granted
-
1984
- 1984-06-29 GB GB08416665A patent/GB2142839B/en not_active Expired
- 1984-07-02 FR FR8410466A patent/FR2548047B1/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB568189A (en) * | 1943-06-15 | 1945-03-22 | Yosef Zarecki | Improvements in or relating to filters |
| GB1093016A (en) * | 1963-11-11 | 1967-11-29 | Georges Zwicky | Improvements in or relating to filtering apparatus |
| GB2119670A (en) * | 1982-03-08 | 1983-11-23 | Kuri Chem Eng | Continuous filter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5510037A (en) * | 1993-02-12 | 1996-04-23 | Tastayre; Gilles | Regeneration of used cleaning solution |
| EP1118367A1 (en) * | 1998-06-25 | 2001-07-25 | Ebara Corporation | Coagulation reaction device |
| EP1118367A4 (en) * | 1998-06-25 | 2001-12-19 | Ebara Corp | Coagulation reaction device |
| US6386752B1 (en) | 1998-06-25 | 2002-05-14 | Ebara Corporation | Coagulation reaction device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2548047A1 (en) | 1985-01-04 |
| FR2548047B1 (en) | 1993-05-28 |
| DE3325203C2 (en) | 1993-05-19 |
| CH653570A5 (en) | 1986-01-15 |
| GB8416665D0 (en) | 1984-08-01 |
| DE3325203A1 (en) | 1985-01-10 |
| GB2142839B (en) | 1987-07-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19970629 |