CN108709034A - The attachment device of desulfurization sprayed slurry pipeline - Google Patents
The attachment device of desulfurization sprayed slurry pipeline Download PDFInfo
- Publication number
- CN108709034A CN108709034A CN201810837744.7A CN201810837744A CN108709034A CN 108709034 A CN108709034 A CN 108709034A CN 201810837744 A CN201810837744 A CN 201810837744A CN 108709034 A CN108709034 A CN 108709034A
- Authority
- CN
- China
- Prior art keywords
- desulfuration absorbing
- absorbing tower
- slurry
- flange
- pipe
- 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.)
- Pending
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 157
- 239000002002 slurry Substances 0.000 title claims abstract description 127
- 230000023556 desulfurization Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 32
- 239000011152 fibreglass Substances 0.000 claims abstract description 9
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 7
- 239000005864 Sulphur Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims description 3
- 241000233855 Orchidaceae Species 0.000 abstract description 16
- 239000011521 glass Substances 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007921 spray Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/80—Semi-solid phase processes, i.e. by using slurries
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of attachment device of desulfurization sprayed slurry pipeline, which includes：Slurry pipe Dow process is blue outside sprayed slurry GRP pipe flange, desulfuration absorbing tower side flange and desulfuration absorbing tower in desulfuration absorbing tower, and slurry pipe Dow process orchid is respectively arranged on the both sides of sprayed slurry GRP pipe flange in desulfuration absorbing tower outside desulfuration absorbing tower side flange and desulfuration absorbing tower；Slurry pipe Dow process is blue identical with sprayed slurry GRP pipe flange specification size in desulfuration absorbing tower outside desulfuration absorbing tower side flange, desulfuration absorbing tower, and three is threadedly coupled by screw bolt and nut.Beneficial effects of the present invention are：The flange of sprayed slurry GRP pipe in desulfuration absorbing tower is mounted on to the centre of slurry pipe Dow process orchid outside desulfuration absorbing tower side flange and desulfuration absorbing tower, three flanges are linked together three by same bolt, the flange stress of sprayed slurry glass pipe in desulfuration absorbing tower is improved, while extending the service life of glass fiber reinforced plastic flange.
Description
Technical field
The present invention relates to Wet Flue Gas Desulfurization Technique fields, in particular to the attachment device of desulfurization sprayed slurry pipeline.
Background technology
Flanged joint is that two pipelines, pipe fitting or equipment are first individually fixed on a ring flange, two ring flanges
Between plus flange gasket with bolt tighten together completion connection.Some pipe fittings and equipment are from flanged, and belong to method
Orchid connection.Flanged joint is the important connection type of pipeline construction.Flanged joint is easy to use, can bear larger pressure.
The use of flanged joint is very extensive in industrial pipeline.
In thermal power plant wet desulphurization process, sprayed slurry pipeline and desulfuration absorbing tower outer pulp in desulfuration absorbing tower
The connection in liquid pipe road uses flanged joint, if the material of sprayed slurry pipeline uses GRP pipe in desulfuration absorbing tower, takes off
Slurry pipe road uses rubber lined pipe outside sulphur absorption tower, and in the case, the connection type of the two is that GRP pipe end is done
Flange in pairs, a flange are connect with desulfuration absorbing tower, another flange and rubber lined pipe flanged joint.GRP pipe end
When double flanged joints, slurry pipe road is forced through flange and passes to GRP pipe outside desulfuration absorbing tower, meanwhile, glass reinforced plastic pipe
Road transmits the force to desulfuration absorbing tower further through another flange.General GRP pipe process for machining and manufacturing also determines flange
It is not integrally manufactured with pipeline.In addition, the material of glass fiber reinforced plastic flange is fragile material, when longtime running, glass fiber reinforced plastic flange is easier to
Damage, fracture.
Invention content
To solve the above problems, the purpose of the present invention is to provide a kind of attachment devices of desulfurization sprayed slurry pipeline, only
With a ring flange by the slurries pipeline and desulfuration absorbing tower outside sprayed slurry pipeline and the desulfuration absorbing tower in desulfuration absorbing tower
Three links together.
The present invention provides a kind of attachment device of desulfurization sprayed slurry pipeline, which includes：
Sprayed slurry GRP pipe flange in desulfuration absorbing tower, with sprayed slurry GRP pipe in desulfuration absorbing tower
End be fixedly connected；
Desulfuration absorbing tower side flange is fixedly connected with desulfuration absorbing tower wall；
Slurry pipe Dow process is blue outside desulfuration absorbing tower, is fixedly connected with slurry pipe road end outside desulfuration absorbing tower；
Slurry pipe Dow process orchid is respectively arranged on the desulfurization outside the desulfuration absorbing tower side flange and the desulfuration absorbing tower
The both sides of sprayed slurry GRP pipe flange in absorption tower；
Outside the desulfuration absorbing tower side flange, the desulfuration absorbing tower in the blue and described desulfuration absorbing tower of slurry pipe Dow process
Sprayed slurry GRP pipe flange specification size is identical, and outside the desulfuration absorbing tower side flange, the desulfuration absorbing tower
Sprayed slurry GRP pipe flange three is connected by screw bolt and nut screw thread in slurries pipe flange and the desulfuration absorbing tower
It connects.
As a further improvement on the present invention, sprayed slurry in the desulfuration absorbing tower side flange and the desulfuration absorbing tower
Sprayed slurry GRP pipe flange and the desulfuration absorbing tower between GRP pipe flange and in the desulfuration absorbing tower
It is equipped with flange gasket between external slurry pipe Dow process orchid.
As a further improvement on the present invention, sprayed slurry GRP pipe flange and the method in the desulfuration absorbing tower
The mating surface of blue gasket is equipped with sealing element.
As a further improvement on the present invention, the bolt is stud.
As a further improvement on the present invention, one end of the bolt is at least with there are two the nuts.
As a further improvement on the present invention, the desulfuration absorbing tower side flange, desulfuration absorbing tower outside slurry pipe
Sprayed slurry GRP pipe flange selects high temperature resistant, resistant material in road flange and the desulfuration absorbing tower.
Beneficial effects of the present invention are：The attachment device of desulfurization sprayed slurry pipeline described in the present patent application, is by desulfurization
The flange of sprayed slurry GRP pipe is mounted on slurry pipe outside desulfuration absorbing tower side flange and desulfuration absorbing tower in absorption tower
The centre of road flange, three flanges are linked together three by same bolt, improve sprayed slurry glass in desulfuration absorbing tower
The flange stress of glass pipeline, while extending the service life of glass fiber reinforced plastic flange.
Description of the drawings
Fig. 1 is a kind of attachment device structural schematic diagram of desulfurization sprayed slurry pipeline described in the embodiment of the present invention；
Fig. 2 is the attachment device structural schematic diagram of desulfurization sprayed slurry pipeline in the prior art；
In figure,
1, sprayed slurry GRP pipe in desulfuration absorbing tower；2, desulfuration absorbing tower side flange；3, spray in desulfuration absorbing tower
Drench slurries GRP pipe flange；4, slurry pipe Dow process is blue outside desulfuration absorbing tower；5, slurry pipe road outside desulfuration absorbing tower；6,
Bolt；7, nut.
Specific implementation mode
It is described in further detail below by specific embodiment and in conjunction with attached drawing to the present invention.
As shown in Figure 1, described in the embodiment of the present invention being a kind of attachment device of desulfurization sprayed slurry pipeline, the device packet
It includes：
Sprayed slurry GRP pipe flange 3 in desulfuration absorbing tower, with sprayed slurry glass reinforced plastic pipe in desulfuration absorbing tower
The end in road 1 is fixedly connected；
Desulfuration absorbing tower side flange 2 is fixedly connected with desulfuration absorbing tower wall；
Slurry pipe Dow process orchid 4 outside desulfuration absorbing tower is fixedly connected with 5 end of slurry pipe road outside desulfuration absorbing tower；
Slurry pipe Dow process orchid 4 is respectively arranged on spray in desulfuration absorbing tower outside desulfuration absorbing tower side flange 2 and desulfuration absorbing tower
Drench the both sides of slurries GRP pipe flange 3；
Sprayed slurry glass in desulfuration absorbing tower side flange 2, desulfuration absorbing tower outside slurry pipe Dow process orchid 4 and desulfuration absorbing tower
Glass steel conduit 3 specifications of flange are identical, and slurry pipe Dow process orchid 4 and de- outside desulfuration absorbing tower side flange 2, desulfuration absorbing tower
3 three of sprayed slurry GRP pipe flange is threadedly coupled by bolt 6 and nut 7 in sulphur absorption tower.
Sprayed slurry GRP pipe flange 3 in desulfuration absorbing tower is set to desulfuration absorbing tower side flange 2 in the present invention
With the centre of slurry pipe Dow process orchid outside desulfuration absorbing tower 4, and three kinds of flanges are selected into same specifications, by desulfuration absorbing tower side method
Connection in orchid 2, desulfuration absorbing tower outside slurry pipe Dow process orchid 4 and desulfuration absorbing tower on sprayed slurry GRP pipe flange 3
Hole matches correspondence one by one, finally by screw thread by three kinds of flanged joints together, it is final to realize sprayed slurry in desulfuration absorbing tower
Outside GRP pipe and desulfuration absorbing tower slurry pipe road connect and desulfuration absorbing tower in sprayed slurry GRP pipe and take off
Sulphur absorption tower connects.Instead of sprayed slurry GRP pipe flange 3 in two desulfuration absorbing towers is used in the prior art, realize
In desulfuration absorbing tower outside sprayed slurry GRP pipe and desulfuration absorbing tower slurry pipe road connect and desulfuration absorbing tower in spray
Leaching slurries GRP pipe is connected with desulfuration absorbing tower.The design can make sprayed slurry glass reinforced plastic pipe Dow process in desulfuration absorbing tower
The power of blue 3 both sides is transmitted with position, only plays the role of transmission and connection.And it is sprayed in two desulfuration absorbing towers in the prior art
The mode that slurries GRP pipe flange 3 connects can make sprayed slurry GRP pipe flange 3 in two desulfuration absorbing towers respective
Independent stress, there are certain distances between sprayed slurry GRP pipe flange 3 in two desulfuration absorbing towers, in addition desulfurization absorbs
The impact force and pipeline itself of sprayed slurry GRP pipe and desulfuration absorbing tower outside slurry pipe road inside slurries in tower
The influence of amount of deflection or moment of flexure can make in desulfuration absorbing tower sprayed slurry GRP pipe flange 3 by respective impact force and shearing
The influence of power is finally broken to make sprayed slurry GRP pipe flange 3 in desulfuration absorbing tower be worn.And only
The occurrence of such is can avoid using sprayed slurry GRP pipe flange 3 in a desulfuration absorbing tower.
Further, in desulfuration absorbing tower side flange 2 and desulfuration absorbing tower between sprayed slurry GRP pipe flange 3 with
And it is equipped between sprayed slurry GRP pipe flange 3 and desulfuration absorbing tower outside slurry pipe Dow process orchid 4 in desulfuration absorbing tower
Flange gasket.Flange gasket can play flange certain cushioning effect, to extend the service life of flange.
Further, sprayed slurry GRP pipe flange 3 and the mating surface of flange gasket are equipped in desulfuration absorbing tower
Sealing element.Due to sprayed slurry glass reinforced plastic pipe in slurry pipe road outside desulfuration absorbing tower, desulfuration absorbing tower and desulfuration absorbing tower
Road be for conveying desulfurization slurry, therefore need to ensure pipeline connection leakproofness, avoid slurries from leaking, therefore need to be inhaled in desulfurization
The junction of sprayed slurry GRP pipe three is added in receipts tower, desulfuration absorbing tower outside slurry pipe road and desulfuration absorbing tower
Sealing element, such as sealing ring or leakage-proof socket sealing device.
Further, bolt 6 is stud.Since bolt 6 needs to realize that desulfuration absorbing tower side flange 2 and desulfurization absorb
Sprayed slurry GRP pipe flange 3 and desulfurization between sprayed slurry GRP pipe flange 3 and in desulfuration absorbing tower in tower
Two connections between slurry pipe Dow process orchid 4 outside absorption tower, therefore bolt 6 need to select stud.
Further, one end of bolt 6 is at least with there are two nuts 7.In order to make desulfuration absorbing tower side flange 2 and desulfurization inhale
It receives in tower between sprayed slurry GRP pipe flange 3 and sprayed slurry GRP pipe flange 3 and de- in desulfuration absorbing tower
Connection outside sulphur absorption tower between slurry pipe Dow process orchid 4 is more firm, need to add the quantity of nut 7, particular number is according to de-
In sulphur absorption tower outside sprayed slurry GRP pipe 1 and desulfuration absorbing tower in slurry pipe road 5 and two pipelines slurries stream
Amount is common to be determined, if the, slurry flow bigger if size the big needed for nut 7 quantity it is more, otherwise the number of nut 7 can be reduced
Amount.Two nuts 7 are selected in the present embodiment.
Further, in desulfuration absorbing tower side flange 2, desulfuration absorbing tower outside slurry pipe Dow process orchid 4 and desulfuration absorbing tower
Sprayed slurry GRP pipe flange 3 selects high temperature resistant, resistant material.Outside desulfuration absorbing tower, desulfuration absorbing tower
Sprayed slurry GRP pipe is for conveying desulfurization slurry, because of the general temperature of slurries in slurries pipeline and desulfuration absorbing tower
It is all higher, and it has higher acid-base property again, therefore the material of flange then needs to select high temperature resistant and corrosion-resistant material, to
It just can guarantee that flange lasts a long time, ensure the stable operation of sulfur removal technology.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. the attachment device of desulfurization sprayed slurry pipeline, which is characterized in that including：
Sprayed slurry GRP pipe flange (3) in desulfuration absorbing tower, with sprayed slurry GRP pipe in desulfuration absorbing tower
(1) end is fixedly connected；
Desulfuration absorbing tower side flange (2), is fixedly connected with desulfuration absorbing tower wall；
Slurry pipe Dow process is blue (4) outside desulfuration absorbing tower, is fixedly connected with slurry pipe road (5) end outside desulfuration absorbing tower；
Slurry pipe Dow process blue (4) is respectively arranged on described de- outside the desulfuration absorbing tower side flange (2) and the desulfuration absorbing tower
The both sides of sprayed slurry GRP pipe flange (3) in sulphur absorption tower；
Slurry pipe Dow process blue (4) and the desulfuration absorbing tower outside the desulfuration absorbing tower side flange (2), the desulfuration absorbing tower
Interior sprayed slurry GRP pipe flange (3) specification is identical, and the desulfuration absorbing tower side flange (2), the desulfurization are inhaled
It receives sprayed slurry GRP pipe flange (3) in tower outside slurry pipe Dow process blue (4) and the desulfuration absorbing tower and passes through bolt (6)
It is threadedly coupled with nut (7).
2. the attachment device of desulfurization sprayed slurry pipeline according to claim 1, which is characterized in that the desulfuration absorbing tower
In side flange (2) and the desulfuration absorbing tower between sprayed slurry GRP pipe flange (3) and in the desulfuration absorbing tower
Outside sprayed slurry GRP pipe flange (3) and the desulfuration absorbing tower flange gasket is equipped between slurry pipe Dow process blue (4)
Piece.
3. the attachment device of desulfurization sprayed slurry pipeline according to claim 2, which is characterized in that the desulfuration absorbing tower
Interior sprayed slurry GRP pipe flange (3) and the mating surface of the flange gasket are equipped with sealing element.
4. the attachment device of desulfurization sprayed slurry pipeline according to claim 1, which is characterized in that the bolt (6) is
Stud.
5. the attachment device of desulfurization sprayed slurry pipeline according to claim 4, which is characterized in that the bolt (6)
One end is at least with there are two the nuts (7).
6. the attachment device of desulfurization sprayed slurry pipeline according to claim 1, which is characterized in that the desulfuration absorbing tower
Sprayed slurry glass reinforced plastic pipe in side flange (2), desulfuration absorbing tower outside slurry pipe Dow process blue (4) and the desulfuration absorbing tower
Road flange (3) selects high temperature resistant, resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810837744.7A CN108709034A (en) | 2018-07-26 | 2018-07-26 | The attachment device of desulfurization sprayed slurry pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810837744.7A CN108709034A (en) | 2018-07-26 | 2018-07-26 | The attachment device of desulfurization sprayed slurry pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108709034A true CN108709034A (en) | 2018-10-26 |
Family
ID=63874309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810837744.7A Pending CN108709034A (en) | 2018-07-26 | 2018-07-26 | The attachment device of desulfurization sprayed slurry pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108709034A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2123673U (en) * | 1992-01-04 | 1992-12-02 | 季忠铁 | Glass fiber reinforced plastics lining pipe |
| CN1843580A (en) * | 2006-03-30 | 2006-10-11 | 国电科技环保集团有限公司 | Circulating slurry sprinkling device for desulfurization of flue gas |
| CN102518896A (en) * | 2011-11-30 | 2012-06-27 | 青岛双瑞海洋环境工程股份有限公司 | Chemical adding pipeline for ship ballast water management system and connection method of ballast water main pipeline |
| CN202402849U (en) * | 2012-01-10 | 2012-08-29 | 河北六强玻璃钢有限公司 | Steering connector for glass reinforced plastic water outlet pipe fitting |
| CN203322619U (en) * | 2013-05-16 | 2013-12-04 | 成都贝根管道有限责任公司 | Pipe flange connecting piece |
| CN104197130A (en) * | 2014-09-05 | 2014-12-10 | 中交天津航道局有限公司 | Connecting structure of rigid pipes and transparent pipe |
| CN205678276U (en) * | 2016-06-08 | 2016-11-09 | 新兴重工三六一一（武汉）特种装备厂 | A kind of water tank attachment structure |
| CN208546635U (en) * | 2018-07-26 | 2019-02-26 | 大唐环境产业集团股份有限公司 | The attachment device of desulfurization sprayed slurry pipeline |
-
2018
- 2018-07-26 CN CN201810837744.7A patent/CN108709034A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2123673U (en) * | 1992-01-04 | 1992-12-02 | 季忠铁 | Glass fiber reinforced plastics lining pipe |
| CN1843580A (en) * | 2006-03-30 | 2006-10-11 | 国电科技环保集团有限公司 | Circulating slurry sprinkling device for desulfurization of flue gas |
| CN102518896A (en) * | 2011-11-30 | 2012-06-27 | 青岛双瑞海洋环境工程股份有限公司 | Chemical adding pipeline for ship ballast water management system and connection method of ballast water main pipeline |
| CN202402849U (en) * | 2012-01-10 | 2012-08-29 | 河北六强玻璃钢有限公司 | Steering connector for glass reinforced plastic water outlet pipe fitting |
| CN203322619U (en) * | 2013-05-16 | 2013-12-04 | 成都贝根管道有限责任公司 | Pipe flange connecting piece |
| CN104197130A (en) * | 2014-09-05 | 2014-12-10 | 中交天津航道局有限公司 | Connecting structure of rigid pipes and transparent pipe |
| CN205678276U (en) * | 2016-06-08 | 2016-11-09 | 新兴重工三六一一（武汉）特种装备厂 | A kind of water tank attachment structure |
| CN208546635U (en) * | 2018-07-26 | 2019-02-26 | 大唐环境产业集团股份有限公司 | The attachment device of desulfurization sprayed slurry pipeline |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181026 |