GB1580177A - Apparatus for gasification of liquids - Google Patents
Apparatus for gasification of liquids Download PDFInfo
- Publication number
- GB1580177A GB1580177A GB40802/75A GB4080275A GB1580177A GB 1580177 A GB1580177 A GB 1580177A GB 40802/75 A GB40802/75 A GB 40802/75A GB 4080275 A GB4080275 A GB 4080275A GB 1580177 A GB1580177 A GB 1580177A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid
- vessel
- tubular member
- inlet
- tube
- 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
- 239000007788 liquid Substances 0.000 title claims description 136
- 238000002309 gasification Methods 0.000 title claims description 19
- 239000010802 sludge Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 7
- 239000005416 organic matter Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 27
- 230000000694 effects Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/71805—Feed mechanisms characterised by the means for feeding the components to the mixer using valves, gates, orifices or openings
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1278—Provisions for mixing or aeration of the mixed liquor
- C02F3/1294—"Venturi" aeration means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
- B01F23/2323—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits
- B01F23/23231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit
- B01F23/232311—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles by circulating the flow in guiding constructions or conduits being at least partially immersed in the liquid, e.g. in a closed circuit the conduits being vertical draft pipes with a lower intake end and an upper exit end
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/32005—Type of drive
- B01F35/3203—Gas driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/712—Feed mechanisms for feeding fluids
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/22—Activated sludge processes using circulation pipes
- C02F3/223—Activated sludge processes using circulation pipes using "air-lift"
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/32005—Type of drive
- B01F35/32015—Flow driven
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Description
(54) APPARATUS FOR GASIFICATION OF LIQUIDS
(71) I, JOHN JAMES TODD, a
British subject, of 23 Thirimere Drive,
Morecambe, Lancashire, England, do hereby declare the invention, for which I pray that a patent may be granted to me, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to apparatus for the treatment of liquid media by gasification. One application of such apparatus is to the gasifica tion of liquid media which contain organic matter degradable by the action of gases thereon, for example the aeration of liquid matter containing aerobically degradable organic matter.
The term liquid media used hereinafter is to be taken to comprehend liquid with or without solid matter therein, for example with or without degradable organic matter in solution and with or without degradable organic matter in solid or aolloidal suspension.
There is disclosed in British patent specifica- tion No. 1,482,191 a device for the gasification of a liquid in which the device is in use immersed which comprises a hollow ringshaped member having inlet means for introduction of gas thereinto and an inwardly directed surface thereof which defines a central flow passageway for said liquid wherein the inwardly directed surface of the ring member is apertured to permit in operation of said device passage of gas from within said member into the liquid in said passageway when the device is so immersed.
In operation the device is immersed in a liquid preferably such that the central passageway encircled by the ring member has its longitudinal axis substantially vertical. The gas forms bubbles on passing through the apertured surface of the ring member into the liquid in the passageway, the bubbles rising through the liquid to the upper surface thereof to induce a flow of liquid upwardly through the passageway. The induced liquid flow passing the apertures in the ring member exerts a shearing effect on the gas bubbles as they leave the ring member thereby producing smaller gas bubbles for gasification of the liquid than hitherto and in consequence increasing the overall gas/liquid interface area for a given volume of gas and thus increasing the rate of gas-to-liquid transfer.
According to the present invention there is provided a device for the gasification of a liquid medium comprising a tubular member adapted for immersion in a liquid medium in a substantially vertical position to define a liquid flow passageway of substantially circular cross-section through the tubular member, said tubular member being provided with lower inlet means and upper outlet means for said flow passageway, a restriction in said passageway between said inlet means and said outlet means, and gas introduction means comprising a plurality of apertures surrounding said passageway and disposed substantially at a throat of said restriction to permit introduction to gas to form gas bubbles into liquid flowing in use in said passageway.
In another aspect the invention provides apparatus for the gasification of liquid comprising an upright cylindrical vessel adapted to receive a liquid medium to be gasified, a tubular member received substantially coaxially within said vessel in a substantially vertical position spaced from a side wall and floor of said vessel and having its upper end below the operating liquid level of said vessel, said tubular member defining a liquid flow passageway of substantially circular crosssection and having lower inlet means and upper outlet means for said passageway, said tubular member having a restriction in said passageway between said inlet and said outlet means, and gas introduction means comprising a plurality of apertures surrounding said passageway and disposed substantially at a throat of said restriction to permit introduction d gas to form bubbles into liquid flowing in use upwardly through said passageway.
In yet another aspect the invention provides a method of gasifying a liquid medium comprising generating gas bubbles within an upright tubular member positioned within a body of liquid medium to be gasified in a vessel whereby to drive a circulation pattern including passage of liquid up a flow passage way of substantially circular cross-section through said tubular member between an inlet and an outlet thereof, said bubbles being generated by introduction of gas through a plurality of apertures surrounding the flow passageway and disposed substantially at a throat of a restriction in said passageway, supplying fresh liquid to a point within said tubular member below said apertures, and removing gasified liquid from a point near the liquid surface in said vessel.
Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure1 shows in vertical section one embodiment of apparatus for gasification of liquid media;
Figure 2 shows in vertical section a sewage treatment system incorporating an aeration device in accordance with the invention; and
Figure 3 shows a section along line A-A d Figure 2.
Figure 1 shows a vessel 1 in which a liquid medium 2 to be gasified is contained. Immersed in liquid 2 is a right circular cylindrical tube 3 defining a central passageway 4 for liquid 2, and having restriction means 5 disposed internally of the tube 3 substantially midway between its ends. The restriction means 5 has apertures 6 therein surrounding the passageway 4. An inlet pipe 7 connects restriction 5 to an external gas supply (not shown). An inlet pipe 8 extends from an external supply (not shown) of liquid medium 2 for gasification to an upward facing discharge point within the lower end 9 of tube 3.
The tube 3 suitably has a length to diameter ratio between 3:1 and 10:1, preferably between 6:1 and 12:1.
In operation the vessel 1 is filled through pipe 8 with ungasified liquid 2 to the level indicated such that the open upper end 10 of tube 3 is located just below said liquid surface level. Gas is fed through pipe 7 to the restriction means 5 in tube 3 whence gas passes through apertures 6 into the liquid 2 to form a multiplicity of bubbles which rise up the passageway 4 and which together with entrained partially gasified liquid 2 leave tube 3 through the upper open end 10 thereof. Gas bubbles which have not been absorbed by the liquid 2 rise to the upper surface thereof and pass into the atmosphere above the liquid 2.
The upward movement of gas bubble entrained liquid 2 causes liquid to flow into the open lower end 9 of tube 3 and hence a circulatory pattern of liquid movement is established with partially gasified liquid leaving upper end 10 being drawn downwards in the annular space between the tube 3 and the wall of vessel 1. Gasification of liquid 2 continues until the liquid becomes saturated with gas or at least is gasified to the degree required.
Fresh ungasilfied liquid is admitted through pipe 8 for discharge into the lower end 9 of tube 3, and gasified liquid is drawn from the vessel 1 through an outlet (not shown) positioned near to the upper surface level of liquid 2.
Figures 2 and 3 show a tube 20 having a restriction 21 located internally of tube 20 as in the Figure 1 embodiment. The restriction incorporates a gas supply plenum 22 provided with apertures 23 into the passageway 4. An air supply pipe 24 connects an external air supply (not shown) with rhe plenum 22 for passage, in operation, of air from the external air supply through plenum 22 and apertures 23 therein, to issue as bubbles into the liquid in the central passageway 4 defined by the tube 20. A pipe 25 connects an external supply of liquid to be aerated (not shown) through a manifold 26 surrounding tube 20 and through inlets 27 in the wall of tube 20 into said central passageway.
The tube 20 is disposed in use in a first outer tubular vessel 28 which acts as an initial containing vessel for the liquid to be aerated supplied thereto by pipe 25 through tube 20.
A second outer tubular vessel 29 surrounds vessel 28. The second vessel 29 has tapered portion 39 leading down to a portion of reduced diameter terminating at 3.1 in radial channels 32 which extend inwardly through vessel 28. The channels 32 communicate with the passageway 4 at inlet ports 33 and thus connect the interior of the second outer vessel 29 with the passageway 4.
The vessel 28 has its upper end weir gate means 35 which enables the level of liquid within vessel 28 to be controlled also controlling the amount of liquid which flows from within vessel 28 into the outer vessel 29. Similarly at the upper end of vessel 29 there is located weir overflow means 36 to control the outflow of liquid from within the outer vessel 29.
In operation fresh liquid to be aerated is fed through pipe 25 and through tube 20 into vessel 28 until the liquid overflow through weir gate 35 into the outer vessel 29 and then feeding is continued until liquid overflows from vessel 29 through weir overflow 36, whereupon the feed is stopped. Air, or other desired gas, is fed through pipe 24 into tube 20 through apertures 23 causing upward flow of air bubbles in the liquid in the passageway 4 defined by tube 20. Air bubble entrained liquid also flows upwardly through passageway 4 causing flow of liquid in vessel 28 to follow the pattern of arrows 37. The flow pattern of liquid in vessel 28 may be assisted in the initial stage by submersed impeller pumps
(not shown) located in vessel 29 directly underneath tube 20 or in the space between tube 20 and vessel 28.
After a predetermined initial aeration period the liquid in vessel 28 may be allowed to flow over weir gate 35 into vessel 29, to establish a liquid circulation pattern as indicated by arrows 38 in which the liquid will flow from vessel 29 through radial channels 32 into tube 20 through inlet ports 33 therein. The degree of relative movement of liquid from vessel 29 to tube 20 is controllable by the adjustment of weir gate 35 enabling less turbulent conditions to be attained in vessel 29 than in vessel 28 so that as aeration proceeds in vessel 28, increasing amounts of de-activated solid matter will settle in the lower part of vessel 29 due to less turbulent conditions existing in this zone.
Provision (not shown) is made in the lower part of vessel 29 to enable quantities of deactivated solid matter in the form of a sludge, to be removed from time to time or continuously. As such sludge is removed from vessel 29 continuously or intermittently so fresh unaerated liquid is fed into tube 20 continuously or intermittently respectively. Liquid in the upper level of vessel 29 will also, as aeration proceeds, become increasingly free of solid or liquid organic matter and such relatively organic matter-free liquid is allowed to overflow through overflow outlet 36 to external receiving means (not shown).
The embodiment of the invention as shown in Figures 2 and 3 may be adapted id desired to enable un-aerated liquid to be fed into the tube 20 above the restriction means 21 by either relocating the liquid feed means 26 or the restriction means 21. Further adaptation may also provide for the thickened sludge returned from vessel 29 through radial channels 32 to be fed into tube 20 at any position along the tube 20 relative to both the un-aerated liquid feed inlet 33 and the restriction means 21, and also for the aerated liquid feed and the thickened sludge to be delivered together into tube 20 at any of these positions. However the arrangement of Figure 2 is currently preferred.
Submersible liquid impeller or circulation pumps may also be located within vessels 28 or 29 where desirable to maintain liquid circulation flow pattern particularly under deep liquid throughout conditions or under conditions where the feed liquid andfor circulating sludge has a high solid matter content. Furthermore, it may be desirable to provide for restriction means 21 to be located at any required position within tube 20 and to provide for tube 20 to be positioned vertically at any desired depth within vessel 28.
Also it may be desirable to provide for adjustable location of weir gate 35 both depthwise in relation to the upper end of tube 20 and also in relation to its lateral disposition between vessel 28 and vessel 29.
In one practical embodiment of the Figure 2 apparatus, the tube 20 was about 5 metres long and 0.5 metres in diameter; the upper end was 4 metres below the liquid surface and the lower end 1 metre above the bottom of the apparatus; the whole apparatus was about 10 metres in depth and 5 metres in maximum diameter; and rhe vessel 28 was about 3 metres in diameter.
WHAT I CLAIM IS:
1. A device for the gasification of a liquid medium comprising a tubular member adapted for immersion in a liquid medium in a substantially vertical position to define a liquid flow passageway of substantially circular cross-section through the tubular member, said tubular member being provided with lower inlet means and upper outlet means for said flow passageway, a restriction in said passageway between said inlet means and said outlet means, and gas introduction means comprising a plurality of apertures surrounding said passageway and disposed substantially at a throat of said restriction to permit introduction of gas to form gas bubbles into liquid flowing in use in said passageway.
2. A device as claimed in claim 1, wherein said tubular member comprises an open-ended tube, said inlet and outlet means comprising the opposite open ends d said tube.
3. A device as claimed in claim 1 or claim 2, wherein said tubular member has a length to diameter ratio between 3:1 and 20:1.
4. A device as claimed in claim 3, wherein said tubular member has a length to diameter ratio between 6:1 and 12:1.
5. A device as claimed in any one of claims 1 to 4, wherein said tubular member is provided with an inlet port for ungasified liquid disposed between said inlet and said outlet means.
6. A device as claimed in claim 5, wherein said inlet port is disposed between said inlet means and said gas introduction means.
7. A device as claimed in claim 5 or claim 6, wherein said tubular member is provided with a further inlet port for partially gasified liquid disposed between said inlet and outlet means.
8. A device as claimed in claim 7, wherein said further inlet port is disposed between said inlet means and said ungasified liquid inlet port.
9. Apparatus for the gasification of liquid comprising a vessel adapted to receive a liquid medium to be gasified and a device as daimed in any one of claims 1 to 8 disposed within said vessel, said tubular member being spaced from the vessel to permit establishment of a circulation pattern.
10. Apparatus for the gasification of liquid comprising an upright cylindrical vessel
adapted to receive a liquid medium to be gasified, a tubular member received substantially coaxially within said vessel in a substantially
vertical position spaced from a side wall and floor of said vessel and having its upper end
below the operating liquid level of said vessel,
said tubular member defining a liquid flow passageway of substantially circular cross
section and having lower inlet means and upper
outlet means for said passageway, said tubular
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (17)
1. A device for the gasification of a liquid medium comprising a tubular member adapted for immersion in a liquid medium in a substantially vertical position to define a liquid flow passageway of substantially circular cross-section through the tubular member, said tubular member being provided with lower inlet means and upper outlet means for said flow passageway, a restriction in said passageway between said inlet means and said outlet means, and gas introduction means comprising a plurality of apertures surrounding said passageway and disposed substantially at a throat of said restriction to permit introduction of gas to form gas bubbles into liquid flowing in use in said passageway.
2. A device as claimed in claim 1, wherein said tubular member comprises an open-ended tube, said inlet and outlet means comprising the opposite open ends d said tube.
3. A device as claimed in claim 1 or claim 2, wherein said tubular member has a length to diameter ratio between 3:1 and 20:1.
4. A device as claimed in claim 3, wherein said tubular member has a length to diameter ratio between 6:1 and 12:1.
5. A device as claimed in any one of claims 1 to 4, wherein said tubular member is provided with an inlet port for ungasified liquid disposed between said inlet and said outlet means.
6. A device as claimed in claim 5, wherein said inlet port is disposed between said inlet means and said gas introduction means.
7. A device as claimed in claim 5 or claim 6, wherein said tubular member is provided with a further inlet port for partially gasified liquid disposed between said inlet and outlet means.
8. A device as claimed in claim 7, wherein said further inlet port is disposed between said inlet means and said ungasified liquid inlet port.
9. Apparatus for the gasification of liquid comprising a vessel adapted to receive a liquid medium to be gasified and a device as daimed in any one of claims 1 to 8 disposed within said vessel, said tubular member being spaced from the vessel to permit establishment of a circulation pattern.
10. Apparatus for the gasification of liquid comprising an upright cylindrical vessel
adapted to receive a liquid medium to be gasified, a tubular member received substantially coaxially within said vessel in a substantially
vertical position spaced from a side wall and floor of said vessel and having its upper end
below the operating liquid level of said vessel,
said tubular member defining a liquid flow passageway of substantially circular cross
section and having lower inlet means and upper
outlet means for said passageway, said tubular
member having a restriction in said passageway between said inlet and said outlet means, and gas introduction means comprising a plurality of apertures surrounding said passageway and disposed substantially at a throat of said restriction to permit introduction of gas to form gas bubbles into liquid flowing in use upwardly through said passageway.
11. Apparatus as claimed in claim 10, wherein said tubular member is provided with an inlet port for ungasified liquid disposed between said inlet and outlet means.
12. Apparatus as claimed in claim 11, wherein said inlet port is disposed between said inlet means and said gas introduction means.
13. Apparatus as claimed in any one of claims 10 to 12, including an outer vessel around said cylindrical vessel, said vessels being in liquid flow communication at their common upper end, said outer vessel being provided with a liquid flow conduit from its lower end communicating with an inlet port to said tubular member between said lower inlet means and said gas introduction means thereof.
14. A method of gasifying a liquid medium comprising generating gas bubbles within an upright tubular member positioned within a body of liquid medium to be gasified in a vessel whereby to drive a circulation pattern including passage of liquid up a flow passageway of substantially circular cross-section through said tubular member between an inlet and an outlet thereof, said bubbles being generated by introduction d gas through a plurality of apertures surrounding the flow passageway and disposed substantially at a throat of a restriction in said passageway, suplying fresh liquid to a point within said tubular member below said apertures, and removing gasified liquid from a point near the liquid surface in said vessel.
15. A device for the gasification of a liquid medium substantially as described herein with reference to Fig. 1, or Fig. 2 of the accom panting drawings.
16. Apparatus for the gasification of liquid substantially as described herein with reference to Figs. 2 and 3 of the accompanying drawings.
17. A method as claimed in claim 14 and substantially as described herein with reference to the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB40802/75A GB1580177A (en) | 1977-06-30 | 1977-06-30 | Apparatus for gasification of liquids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB40802/75A GB1580177A (en) | 1977-06-30 | 1977-06-30 | Apparatus for gasification of liquids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1580177A true GB1580177A (en) | 1980-11-26 |
Family
ID=10416690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40802/75A Expired GB1580177A (en) | 1977-06-30 | 1977-06-30 | Apparatus for gasification of liquids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1580177A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0515799A1 (en) * | 1991-05-29 | 1992-12-02 | Hüls Aktiengesellschaft | Reactor for phase-heterogeneous reactions |
| US5935490A (en) * | 1996-07-26 | 1999-08-10 | Boc Gases Australia Limited | Oxygen dissolver for pipelines or pipe outlets |
-
1977
- 1977-06-30 GB GB40802/75A patent/GB1580177A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0515799A1 (en) * | 1991-05-29 | 1992-12-02 | Hüls Aktiengesellschaft | Reactor for phase-heterogeneous reactions |
| TR26470A (en) * | 1991-05-29 | 1995-03-15 | Huels Chemische Werke Ag | REACTOR FOR EXERCISE OF PHASE-HETEROGENIC REACTIONS, ESPECIALLY GAS-LIQUID REACTIONS. |
| US5935490A (en) * | 1996-07-26 | 1999-08-10 | Boc Gases Australia Limited | Oxygen dissolver for pipelines or pipe outlets |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |