CA1312292C - Filtering bag and filter - Google Patents
Filtering bag and filterInfo
- Publication number
- CA1312292C CA1312292C CA000562132A CA562132A CA1312292C CA 1312292 C CA1312292 C CA 1312292C CA 000562132 A CA000562132 A CA 000562132A CA 562132 A CA562132 A CA 562132A CA 1312292 C CA1312292 C CA 1312292C
- Authority
- CA
- Canada
- Prior art keywords
- bag
- filtering bag
- support
- edges
- opposed
- 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 - Fee Related
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 47
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000004743 Polypropylene Substances 0.000 claims description 11
- 239000000706 filtrate Substances 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 239000002657 fibrous material Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 7
- 239000002002 slurry Substances 0.000 description 3
- 241000905957 Channa melasoma Species 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- BALXUFOVQVENIU-KXNXZCPBSA-N pseudoephedrine hydrochloride Chemical compound [H+].[Cl-].CN[C@@H](C)[C@@H](O)C1=CC=CC=C1 BALXUFOVQVENIU-KXNXZCPBSA-N 0.000 description 1
- 235000002020 sage Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/19—Supported filter elements arranged for inward flow filtration on solid frames with surface grooves or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
- B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
- B01D33/23—Construction of discs or component sectors thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Endoscopes (AREA)
- Treatment Of Sludge (AREA)
Abstract
Docket No. 0265-CI-PP
FILTERING BAG AND FILTER
Abstract of the Disclosure A mesh filter bag fits over a metal support. The bag has opposed edges longitudinally extending along one side of the mesh filtering bag from the bottom of the bag to the top of the bag. A rope extends from the filtering bag bottom along one opposed edge over the top and along the other opposed edge to the bottom. The opposed edges are held in sealing engagement by a tube.
FILTERING BAG AND FILTER
Abstract of the Disclosure A mesh filter bag fits over a metal support. The bag has opposed edges longitudinally extending along one side of the mesh filtering bag from the bottom of the bag to the top of the bag. A rope extends from the filtering bag bottom along one opposed edge over the top and along the other opposed edge to the bottom. The opposed edges are held in sealing engagement by a tube.
Description
Docke~ NO. 0265-CI-~P
This invention relates to a f iltering apparatus, and more particularly, to filters of the type used for filtering a slurry such as pulp stock for the manu~acture of paper.
One type of currently used filters includes a f ilter sup-port wlth a f iltering bag mounted on the support. The flltering bag is made of a suitabla material, such as polypropylene. The polypropylene bag i5 p~aced over the filter support and opposed longidutional edges of the bag are zipped up by means of a zipper. The zipper parts are also made of a suitable material such as polypropylene.
Unfortunately, when the temperature of the slurry is above, say 165Q, the zipper parts begin to break and became disengaged from the polypropylene filtering bag.
When this happens, solids pass through the filtering bag and metal support, which, of course, is undesirable.
This invention pro~ides a filter having a filtering bag which is securely mounted on the filter support. The zipper, such as used on the currently used filtering bags, is eliminated. Rope means extend alony the opposed edges of a longitudinal opening in the ~iltering bag.
The rope means are embedded in the opposed edges of the flltering bag. The opposed edges are held in sealing Z5 contac~ by sealing means such as a longitudinal tube.
Briefly described, the invention is a filter for removing liquid from a slurry. A mesh fil~ering bag is mounted on a metal support. The metal support has openings adjacent to the mesh filtering bag for the flow of filtra~e into the metal support. At least one drainage duct for drain-ing the filtrate from the support is provided in the metal support. The mesh filtering bag has opposed edges longitudinally extending along one side of the mesh fil-~ .
.
.
.. ,, ' '`- .
131~29~
tering bag from the bottom of the bag to the top of the bag. Rope means is embedded in the opposed edges. Means are provided for holding the opposed edges in sealing engagement.
Briefly described, the new mesh filtering bag is a flexible, preshaped mesh filtering bag adapted to be installed over a rigid filtering bag support. The flexible, preshaped mesh filtering bag has two edges with embedded rope means. The two edges are located so that when the bag is installed, it will have one side with laterally opposed edges longitudinally extending from the bag bottom to the bag top. The edges are adapted to be brought into sealing engagement when installed over the filtering bag support.
According to a still further broad aspect of the present invention, there is provided a flexible, preshaped mesh filtering bag adapted to be installed over a tapering from top to bottom rigid filtering bag support having openings for the flow of filtrate into the support, and means, at one end of the support for draining filtrate from the support. The flexible, preshaped mesh filtering bag comprises one integral form fitting mesh bag having two edges with embedded rope means located so that when installed on the rigid filtering bag support, the bag will have one side with laterally opposed edges longitudinally extending from the bottom of the bag to the top of the bag. The edges are adapted to be brought into sealing contact when installed to form a closure.
The closure provides means to allow installation over the tapering rigid bag support and a means for retention of the filtering bag on the tapering rigid '~
1 3 ~ 2 support. Means is provided for holding the opposed edges in sealing engagement, wherein the mesh filtering bag is made of fiber material. The rope means is made of fiber material and further consists of a single rope extending from the bag bottom, along one opposed edge, over the bag top, and along the other opposed edge to the bag bottom.
The invention, as well as its many advantages, will be further understood by reference to the following detailed description and drawings in which:
Fig. 1 is an elevational side view of a filter segment constructed in accordance with one embodiment of the invention, shown with a portion of the bag broken away;
Fig. 2 is an elevational side view of the embodiment of Fig. l;
Fig. 3 is an enlarged fragmentary sectional view of the structure for enclosing the filtering bag into seal-tight engagement on the support;
Fig. 4 is an enlarged view taken along lines 4-4 of Fig. l;
Fig. 5 is an enlarged fragmentary view of one end of - 2a Docket NO. 0265-CI~PP
the sealing tube of Fig. l;
Fig. 6 is a view taken along lines 6--6 of Fig. 5 and in the direction of the arrows; and Fig. 7 is an end YieW of the sealing tubo of Fig. 5.
In the various figures, like parts are referred to by like numbers.
Referring to the drawings, and more particularly to Fig.
1, a filter segment for a disk-type filter is shown to illustrate the invention. The filter segment 10 is mounted on the usual rotatable hub }2 in iuxtaposed rela-tionship with other filter segments, ad~acent ones being indicated by fragmentary and broken lines. The segment is connected at its outer periphery to the ad~acQnt ~e~ments by tubular clip8 14 which internally receive th~
seqments and the sagments ar~ attached to the clip~ by suitable fasteners (not shown). Each tubular clip 14 extends over adjacent top portions of juxtaposed filter segments 10. A ~ubular clip 16 innerconnects the tubular clips 14 to completely enclose the outer periphery of each filter segment 10.
The segment 10 comprises a base 18 which includes a cen-tral box-like section having walls 20 enclosing a down-wardly-tapering passage or duct 21 connected to one of the flow channels 24 in the hub 12 ~or draining filtrate from the segment 10.
The segment 10 also has a pair of axially-spaced side walls 26, 28 ~see Fig. 4~, each connected at one end to the base 18 and extënding longitudinally from the base 18 in opposed-spaced relationship. The side walls overlap ` ~3122~2 Docket No. 0265-CI-PP
along the radially-extending sides of the filter segment.
The side walls 26, 28 serve to ~upport the filtering bag and each wall has a plurality of radially extending, cir-cum~erentially separated lands 41 separating 10UVQrS 44 (see Fig. 1). The space 30 (sae Fig. 4) betwaen the side walls 26, 28 throughout the lengths and breadths of tha side walls 26, 28 serYes as a drainage duct and communi-cates with the pa~sage 21 in th~ base 18 for draining filtrate from the filter segment.
A flexible, preshaped mesh filtaring bag 32 is installed over the side walls 26 and 28 of the filtering bag sup-port section 10. The preshaped mesh filtering bag 32 is one integral mesh piece. When fabricated, the filtering bag has rope means embedded therein in a manner such that when the bag i~ installed on the bag support there will be laterally opposed edges 34 and 36 (see Fig. 4) longi-tudinally extending from the bag open bottom to the bag closed top. The rope portions 38 and 40 are encased in loops 42 and 43 on opposed edges 34 and 36 respecti~ely.
The preshaped, flexible m~sh filtering bag open bottom abuts against a sewn hem which extends completely around the bottom of the flexible, preshaped mesh filtering bag 32. An annular rope insert 46 is e~oedded within the hem 48. A clamp 49 encloses the bottom of the flexible, pre-shaped filtering bag 32 into seal-tight engagement about the rigid filtering bag support segment 10.
The mesh filtering bag 32 may be made of polypropylen~
and the annular rope 46 may also be made of polypropy-lene.
After the flexible, preshaped mesh filtering bag has been inserted over the metal support sector 10, the opposed : '. ' - ' . ' - ~31~2292 Docket No. 0265-CI-PP
edgas 34 and 36 (see Fig. 4) are brought into sealing contact by the longitudinally extending tube 50. Tha opposed edges 34 and 36 longitudinally extend along the open side of the mesh filtering bag 3~ from the bottom o~
S the bag to the top of the bag. If de~ired, two separate ropes may be embedded in each opposed edge 34 and 36.
However, preferably, the rope means consists of a single rope which extends from the filtering bag bottom, along one opposed edge 34, over the filtering bag top and along the other opposed edge 36 to the filtering bag bottom.
As shown in Fig. 4, the portions 38 and 40 of the single rope extend longitudinally along the opposed edges 34 and 36 and are laterally separated along the same plane. The rope may be made of polypropylene or any other suitable, lS flexible material.
The tube 50 which holds the opposed edges 34 and 36 in sealinq engagement is fitted over the loops 42 and 43 and extends along the full length of the opposed edges 34 and 36. The tube 50 has a longitudinal slot 62 (see Flg. 6 and Fig. 7) in which the opposed edges, the loops, and the rope portions extend. The longitudinal slot 62 is formed by the curved surfaces 63 and 65 formed by out-wardly extending lips 64 and 66, respectively, on each side of the longitudinal slot 62. Ea~h open end of the tube 50 is flared ou~wardly (one flare shown in Fig. 7).
The bag 32 is installed over the filter bag support. The matal tube 50 is slid over the loose longi- tudinal edges of the bag into which the rope has been sewn to effec-tively seal the side of the bag. The curved surfaces 63 and 65 and the flared ends o~ the tube prevent damage to the bag during installation, shrinking and operating stages.
.. . . . .
.: ..
. - . : .
.
--` 13122~2 nocket No. 0265-CI-PP
The tube 50 is constructed to pre~ent the emprisoned rope, thus the edges of the bag, from b~ing latQrally pulled out of the tube. Langitudinal movement o~ the tube 50 is restricted by 'h3 clamping band 49 at the lower end and the interlocking clip 14 at the upper end.
~ . .. , . ~ .. ... . .. .
This invention relates to a f iltering apparatus, and more particularly, to filters of the type used for filtering a slurry such as pulp stock for the manu~acture of paper.
One type of currently used filters includes a f ilter sup-port wlth a f iltering bag mounted on the support. The flltering bag is made of a suitabla material, such as polypropylene. The polypropylene bag i5 p~aced over the filter support and opposed longidutional edges of the bag are zipped up by means of a zipper. The zipper parts are also made of a suitable material such as polypropylene.
Unfortunately, when the temperature of the slurry is above, say 165Q, the zipper parts begin to break and became disengaged from the polypropylene filtering bag.
When this happens, solids pass through the filtering bag and metal support, which, of course, is undesirable.
This invention pro~ides a filter having a filtering bag which is securely mounted on the filter support. The zipper, such as used on the currently used filtering bags, is eliminated. Rope means extend alony the opposed edges of a longitudinal opening in the ~iltering bag.
The rope means are embedded in the opposed edges of the flltering bag. The opposed edges are held in sealing Z5 contac~ by sealing means such as a longitudinal tube.
Briefly described, the invention is a filter for removing liquid from a slurry. A mesh fil~ering bag is mounted on a metal support. The metal support has openings adjacent to the mesh filtering bag for the flow of filtra~e into the metal support. At least one drainage duct for drain-ing the filtrate from the support is provided in the metal support. The mesh filtering bag has opposed edges longitudinally extending along one side of the mesh fil-~ .
.
.
.. ,, ' '`- .
131~29~
tering bag from the bottom of the bag to the top of the bag. Rope means is embedded in the opposed edges. Means are provided for holding the opposed edges in sealing engagement.
Briefly described, the new mesh filtering bag is a flexible, preshaped mesh filtering bag adapted to be installed over a rigid filtering bag support. The flexible, preshaped mesh filtering bag has two edges with embedded rope means. The two edges are located so that when the bag is installed, it will have one side with laterally opposed edges longitudinally extending from the bag bottom to the bag top. The edges are adapted to be brought into sealing engagement when installed over the filtering bag support.
According to a still further broad aspect of the present invention, there is provided a flexible, preshaped mesh filtering bag adapted to be installed over a tapering from top to bottom rigid filtering bag support having openings for the flow of filtrate into the support, and means, at one end of the support for draining filtrate from the support. The flexible, preshaped mesh filtering bag comprises one integral form fitting mesh bag having two edges with embedded rope means located so that when installed on the rigid filtering bag support, the bag will have one side with laterally opposed edges longitudinally extending from the bottom of the bag to the top of the bag. The edges are adapted to be brought into sealing contact when installed to form a closure.
The closure provides means to allow installation over the tapering rigid bag support and a means for retention of the filtering bag on the tapering rigid '~
1 3 ~ 2 support. Means is provided for holding the opposed edges in sealing engagement, wherein the mesh filtering bag is made of fiber material. The rope means is made of fiber material and further consists of a single rope extending from the bag bottom, along one opposed edge, over the bag top, and along the other opposed edge to the bag bottom.
The invention, as well as its many advantages, will be further understood by reference to the following detailed description and drawings in which:
Fig. 1 is an elevational side view of a filter segment constructed in accordance with one embodiment of the invention, shown with a portion of the bag broken away;
Fig. 2 is an elevational side view of the embodiment of Fig. l;
Fig. 3 is an enlarged fragmentary sectional view of the structure for enclosing the filtering bag into seal-tight engagement on the support;
Fig. 4 is an enlarged view taken along lines 4-4 of Fig. l;
Fig. 5 is an enlarged fragmentary view of one end of - 2a Docket NO. 0265-CI~PP
the sealing tube of Fig. l;
Fig. 6 is a view taken along lines 6--6 of Fig. 5 and in the direction of the arrows; and Fig. 7 is an end YieW of the sealing tubo of Fig. 5.
In the various figures, like parts are referred to by like numbers.
Referring to the drawings, and more particularly to Fig.
1, a filter segment for a disk-type filter is shown to illustrate the invention. The filter segment 10 is mounted on the usual rotatable hub }2 in iuxtaposed rela-tionship with other filter segments, ad~acent ones being indicated by fragmentary and broken lines. The segment is connected at its outer periphery to the ad~acQnt ~e~ments by tubular clip8 14 which internally receive th~
seqments and the sagments ar~ attached to the clip~ by suitable fasteners (not shown). Each tubular clip 14 extends over adjacent top portions of juxtaposed filter segments 10. A ~ubular clip 16 innerconnects the tubular clips 14 to completely enclose the outer periphery of each filter segment 10.
The segment 10 comprises a base 18 which includes a cen-tral box-like section having walls 20 enclosing a down-wardly-tapering passage or duct 21 connected to one of the flow channels 24 in the hub 12 ~or draining filtrate from the segment 10.
The segment 10 also has a pair of axially-spaced side walls 26, 28 ~see Fig. 4~, each connected at one end to the base 18 and extënding longitudinally from the base 18 in opposed-spaced relationship. The side walls overlap ` ~3122~2 Docket No. 0265-CI-PP
along the radially-extending sides of the filter segment.
The side walls 26, 28 serve to ~upport the filtering bag and each wall has a plurality of radially extending, cir-cum~erentially separated lands 41 separating 10UVQrS 44 (see Fig. 1). The space 30 (sae Fig. 4) betwaen the side walls 26, 28 throughout the lengths and breadths of tha side walls 26, 28 serYes as a drainage duct and communi-cates with the pa~sage 21 in th~ base 18 for draining filtrate from the filter segment.
A flexible, preshaped mesh filtaring bag 32 is installed over the side walls 26 and 28 of the filtering bag sup-port section 10. The preshaped mesh filtering bag 32 is one integral mesh piece. When fabricated, the filtering bag has rope means embedded therein in a manner such that when the bag i~ installed on the bag support there will be laterally opposed edges 34 and 36 (see Fig. 4) longi-tudinally extending from the bag open bottom to the bag closed top. The rope portions 38 and 40 are encased in loops 42 and 43 on opposed edges 34 and 36 respecti~ely.
The preshaped, flexible m~sh filtering bag open bottom abuts against a sewn hem which extends completely around the bottom of the flexible, preshaped mesh filtering bag 32. An annular rope insert 46 is e~oedded within the hem 48. A clamp 49 encloses the bottom of the flexible, pre-shaped filtering bag 32 into seal-tight engagement about the rigid filtering bag support segment 10.
The mesh filtering bag 32 may be made of polypropylen~
and the annular rope 46 may also be made of polypropy-lene.
After the flexible, preshaped mesh filtering bag has been inserted over the metal support sector 10, the opposed : '. ' - ' . ' - ~31~2292 Docket No. 0265-CI-PP
edgas 34 and 36 (see Fig. 4) are brought into sealing contact by the longitudinally extending tube 50. Tha opposed edges 34 and 36 longitudinally extend along the open side of the mesh filtering bag 3~ from the bottom o~
S the bag to the top of the bag. If de~ired, two separate ropes may be embedded in each opposed edge 34 and 36.
However, preferably, the rope means consists of a single rope which extends from the filtering bag bottom, along one opposed edge 34, over the filtering bag top and along the other opposed edge 36 to the filtering bag bottom.
As shown in Fig. 4, the portions 38 and 40 of the single rope extend longitudinally along the opposed edges 34 and 36 and are laterally separated along the same plane. The rope may be made of polypropylene or any other suitable, lS flexible material.
The tube 50 which holds the opposed edges 34 and 36 in sealinq engagement is fitted over the loops 42 and 43 and extends along the full length of the opposed edges 34 and 36. The tube 50 has a longitudinal slot 62 (see Flg. 6 and Fig. 7) in which the opposed edges, the loops, and the rope portions extend. The longitudinal slot 62 is formed by the curved surfaces 63 and 65 formed by out-wardly extending lips 64 and 66, respectively, on each side of the longitudinal slot 62. Ea~h open end of the tube 50 is flared ou~wardly (one flare shown in Fig. 7).
The bag 32 is installed over the filter bag support. The matal tube 50 is slid over the loose longi- tudinal edges of the bag into which the rope has been sewn to effec-tively seal the side of the bag. The curved surfaces 63 and 65 and the flared ends o~ the tube prevent damage to the bag during installation, shrinking and operating stages.
.. . . . .
.: ..
. - . : .
.
--` 13122~2 nocket No. 0265-CI-PP
The tube 50 is constructed to pre~ent the emprisoned rope, thus the edges of the bag, from b~ing latQrally pulled out of the tube. Langitudinal movement o~ the tube 50 is restricted by 'h3 clamping band 49 at the lower end and the interlocking clip 14 at the upper end.
~ . .. , . ~ .. ... . .. .
Claims (4)
1. A flexible, preshaped mesh filtering bag adapted to be installed over a tapering from top to bottom rigid filtering bag support having openings for the flow of filtrate into the support, and means, at one end of the support for draining filtrate from the support, said flexible, preshaped mesh filtering bag comprising: one integral form fitting mesh bag having two edges with embedded rope means located so that when installed on the rigid filtering bag support, the bag will have one side with laterally opposed edges longitudinally extending from the bottom of the bag to the top of the bag, the edges being adapted to be brought into sealing contact when installed to form a closure, said closure providing means to allow installation over said tapering rigid bag support and a means for retention of said filtering bag on said tapering rigid support, and means for holding said opposed edges in sealing engagement, wherein said mesh filtering bag is made of fiber material; and said rope means is made of fiber material, and further wherein said rope means consists of a single rope extending from the bag bottom, along one opposed edge, over the bag top, and along the other opposed edge to the bag bottom.
2. A flexible, preshaped mesh filtering bag in accordance with claim 1 wherein: the means for holding the opposed edges in sealing engagement is a single tube fitted over the opposed edges and extending along the full length of the opposed edges.
3. A flexible, preshaped mesh filtering bag in accordance with claim 2 wherein: the tube has flared open ends, a longitudinal slot in which the opposed edges extend, and an outwardly extending lip on each side of the longitudinal slot.
4. A flexible, preshaped mesh filtering bag in accordance with claim 1 wherein: the fiber material of said mesh filtering bag and said rope means is a polypropylene material.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US3425487A | 1987-04-06 | 1987-04-06 | |
| US034,254 | 1987-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1312292C true CA1312292C (en) | 1993-01-05 |
Family
ID=21875255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000562132A Expired - Fee Related CA1312292C (en) | 1987-04-06 | 1988-03-22 | Filtering bag and filter |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT392988B (en) |
| CA (1) | CA1312292C (en) |
| FI (1) | FI86806C (en) |
| IT (1) | IT1217386B (en) |
| SE (1) | SE467523B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1401317C3 (en) * | 1960-02-18 | 1975-01-16 | Nordlund, Karl Folke, Jönköping (Schweden) | Steam generation plant with natural circulation |
| US4151813A (en) * | 1978-03-27 | 1979-05-01 | Foster Wheeler Energy Corporation | Jet pump in natural circulation fossil fuel fired steam generator |
| CH633610A5 (en) * | 1978-05-19 | 1982-12-15 | Bbc Brown Boveri & Cie | COMBINED GAS / STEAM TURBINE POWER PLANT WITH COUNTERPRINT TURBINE, ESPECIALLY FOR INDUSTRIAL PURPOSES. |
| DE2940027A1 (en) * | 1979-10-03 | 1981-04-09 | Paul Lindenau Gmbh & Co Kg Schiffswerft Und Maschinenfabrik, 2300 Kiel | Ships waste heat boiler using diesel, exhaust - has parallel heat exchange coils each with own feed non-return valve and steam pipe |
| US4586338A (en) * | 1984-11-14 | 1986-05-06 | Caterpillar Tractor Co. | Heat recovery system including a dual pressure turbine |
| DE3515174A1 (en) * | 1985-04-26 | 1986-11-06 | Kraftwerk Union AG, 4330 Mülheim | HEAT STEAM GENERATOR |
-
1988
- 1988-03-22 CA CA000562132A patent/CA1312292C/en not_active Expired - Fee Related
- 1988-03-28 SE SE8801151A patent/SE467523B/en not_active IP Right Cessation
- 1988-03-31 IT IT20054/88A patent/IT1217386B/en active
- 1988-04-05 FI FI881568A patent/FI86806C/en not_active IP Right Cessation
- 1988-04-06 AT AT887/88A patent/AT392988B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| FI86806B (en) | 1992-07-15 |
| IT8820054A0 (en) | 1988-03-31 |
| FI881568A0 (en) | 1988-04-05 |
| SE8801151L (en) | 1988-10-07 |
| FI86806C (en) | 1992-10-26 |
| SE467523B (en) | 1992-08-03 |
| SE8801151D0 (en) | 1988-03-28 |
| ATA88788A (en) | 1990-12-15 |
| FI881568A (en) | 1988-10-07 |
| AT392988B (en) | 1991-07-25 |
| IT1217386B (en) | 1990-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |