CN107502692A - The tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting - Google Patents
The tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting Download PDFInfo
- Publication number
- CN107502692A CN107502692A CN201710879379.1A CN201710879379A CN107502692A CN 107502692 A CN107502692 A CN 107502692A CN 201710879379 A CN201710879379 A CN 201710879379A CN 107502692 A CN107502692 A CN 107502692A
- Authority
- CN
- China
- Prior art keywords
- reflector
- cylinder
- blast furnace
- cyclone dust
- dust collectors
- 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
- 239000000428 dust Substances 0.000 title claims abstract 11
- 239000004570 mortar (masonry) Substances 0.000 claims abstract 4
- 239000003638 chemical reducing agent Substances 0.000 claims 2
- 238000007689 inspection Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/22—Dust arresters
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/002—Evacuating and treating of exhaust gases
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cyclones (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to a kind of blast furnace gas one-time dedusting with tangential multi-pipeline cyclone dust collectors, cylinder including closing, cylinder top center is communicated with blast pipe, bottom is collection ash silo, cylinder top is communicated with least three around the uniform air inlet pipe of cylinder, air inlet pipe is cylindrical tangent with cylinder and is communicated to blast furnace crude gas outlet, bottom is provided with the reflector and reflector coaxial with cylinder in cylinder, reflector is up-narrow and down-wide cone or cone column combination body, reflector is wide at the top and narrow at the bottom, both ends open, the circular cone cover that reflector is surrounded, annular mortar joint is formed between the conical surface of reflector and the conical surface of reflector, reflector is fixed along cylinder inboard wall, reflector is arranged on reflector or on cylinder by support member.Deduster processing flow rates are wide, have stable eddy flow center, and efficiency of dust collection is high, and simple in construction, floor space is small, easy for installation.
Description
Technical field
The invention belongs to dedusting of blast furnace gas field, and in particular to a kind of blast furnace gas one-time dedusting is revolved with tangential multi-pipeline
Wind deduster.
Background technology
At present, blast furnace crude gas primary dedusting system mainly has three kinds of schemes：1) gravitational precipitator；2) PW axles stream whirlwind removes
Dirt device；3) gravitational precipitator+tangential cyclone dust collectors.Wherein, scheme 1) efficiency of dust collection it is relatively low, only 40%~50%；Side
Case 2) deflector structure is complicated, installs inconvenience, and is easily ground away, blows off by the Gas Flow of high speed, often force blast furnace staying；Scheme
3) investment is high, and floor space is big, requires higher to integral arrangement.
The content of the invention
It is an object of the invention to provide a kind of blast furnace gas one-time dedusting tangential cyclone multi-tube road deduster, the deduster
The eddy flow center of flow rates extensively, with stabilization is handled, efficiency of dust collection is high, and simple in construction, floor space is small, easy for installation.
The technical solution adopted in the present invention is：
A kind of cylinder of blast furnace gas one-time dedusting tangential cyclone dust collectors, including closing, the connection of cylinder top center
It is collection ash silo to have blast pipe, bottom, and cylinder top is communicated with least three outside the uniform air inlet pipe of cylinder, air inlet pipe and cylinder
Circle is tangent and is communicated to blast furnace crude gas outlet, and bottom is provided with the reflector and reflector coaxial with cylinder, reflector in cylinder
For up-narrow and down-wide cone or cone column combination body, reflector is wide at the top and narrow at the bottom, both ends open, the circular cone for surrounding reflector
Cover, forms annular mortar joint, reflector is fixed along cylinder inboard wall, reflector passes through between the conical surface of reflector and the conical surface of reflector
Support member is arranged on reflector or on cylinder.
Further, the angle between the conical surface of reflector and the conical surface of reflector is 50~60 °, the gap of annular mortar joint
For 350~800mm.
Further, cylinder is provided with inspection manhole, and reflector is provided with access path, and access path connects with inspection manhole
Connect and extend at annular mortar joint.
Further, when reflector bottom is located above reflector bottom opening, reflector is connected by support member
On reflector.
Further, when reflector bottom is located at below reflector bottom opening, reflector passes through support member height adjustable
Be connected on cylinder, cylindrical be provided with of cylinder is used to adjust the regulation passage of reflector height.
Further, it is cavity inside reflector.
Further, air inlet pipe entrance point connects with reducer pipe and down-comer successively, and reducer pipe gradually narrows to cylinder, under
Drop pipe is communicated to blast furnace crude gas outlet.
Further, air inlet pipe is rectangular tube.
The beneficial effects of the invention are as follows：
During work, raw gas is in air inlet pipe incision cylinder, and raw gas moves along cylinder inboard wall downward spiral, anti-
Penetrate under the reflex of cover and alter course to axe movement, and changed course forms rotational gas flow, upper rotation gas under the reflex of reflector
Stream is discharged after rising in the middle part of cylinder by blast pipe, and the blast furnace crude gas not declined nearby with cylinder inboard wall conflicts, meanwhile,
During altering course twice, grit enters collection ash silo by annular mortar joint under gravity；The present invention uses at least three air inlets
Pipe, processing flow rates are wide, have stable eddy flow center, carry out one-time dedusting direct to blast furnace crude gas, efficiency of dust collection
For 70%~80%, higher than the 40%~50% of gravitational precipitator, gravitational precipitator can be replaced, can be concentrated and be isolated particle diameter and be more than
5 μm of grit, it will be present in the zinc in little particle and stay in gas secondary dedusting ash, be easy to recycle in dry gas ash
Fe, C, gas secondary dedusting is more conducive to the recycling of zinc, effectively mitigates the load of follow-up gas secondary dust pelletizing system；This hair
It is bright that blast furnace crude gas outlet is connected by pipeline, it is simple in construction, easy for installation；Floor space of the present invention is small, total figure is not arranged
Have an impact, can reduce investment outlay；Support member make it that reflector structure is stable, does not swing, rocks under the impact of air-flow.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the external schematic diagram (observing for convenience, only draw an air inlet pipe) of air inlet pipe in the present invention.
Fig. 3 is Fig. 2 top view.
In figure：1- down-comers；2- reducer pipes；3- air inlet pipe；4- blast pipes；5- cylinders；6- reflectors；7- reflectors；8-
Collect ash silo.
Embodiment
The present invention is further illustrated with reference to the accompanying drawings and examples.
As shown in figure 1, in the present embodiment, blast furnace gas one-time dedusting includes the cylinder of closing with tangential cyclone dust collectors
5, the top center of cylinder 5 be communicated with blast pipe 4, bottom for collection ash silo 8, the top of cylinder 5 be sequentially communicated three it is uniform around cylinder 5
Air inlet pipe 3 (can essentially according to demand, set up for 4,5,6 etc. more), reducer pipe 2 and down-comer 1 be (see figure
2 and Fig. 3), air inlet pipe 3 is cylindrical tangent with cylinder 5, and reducer pipe 2 gradually narrows to cylinder 5, and down-comer 1 is communicated to blast furnace crude gas
(blast furnace crude gas outlet is general to be connected with delivery line and tedge, and down-comer 1 is exported by tedge and blast furnace crude gas for outlet
Connection), bottom is provided with the reflector 6 and reflector 7 coaxial with cylinder 5 in cylinder 5, and reflector 6 is up-narrow and down-wide cone
(can also be cone column combination body), the circular cone cover that reflector 7 is wide at the top and narrow at the bottom, both ends open, surrounds reflector 6, reflector 6
The conical surface and reflector 7 the conical surface between form annular mortar joint, reflector 7 is along the inwall of cylinder 5 is fixed, reflector 6 passes through support
Part is arranged on reflector 7 or on cylinder 5.
During work, down-comer 1 introduces raw gas with blast furnace crude gas outlet, and raw gas is after the acceleration of reducer pipe 2
Cut by air inlet pipe 3 in cylinder 5, raw gas moves downward along the spiral inner wall of cylinder 5, under the reflex of reflector 7
Alter course to axe movement, but changed course forms rotational gas flow under the reflex of reflector 6, and upper rotational gas flow is from the middle part of cylinder 5
To be discharged after rising by blast pipe 4, the blast furnace crude gas not declined nearby with the inwall of cylinder 5 conflicts, meanwhile, in the process that alters course twice
In, grit enters collection ash silo 8 by annular mortar joint under gravity；Present invention processing flow rates are wide, have stable rotation
Flow center area, carry out one-time dedusting direct to blast furnace crude gas, efficiency of dust collection is 70%~80%, higher than gravitational precipitator
40%~50%, gravitational precipitator can be replaced, can concentrate and isolate the grit that particle diameter is more than 5 μm, will be present in little particle
Zinc is stayed in gas secondary dedusting ash, is easy to recycle Fe, C in dry gas ash, gas secondary dedusting is more conducive to zinc
Recycling, effectively mitigate the load of follow-up gas secondary dust pelletizing system；The present invention connects blast furnace crude gas by pipeline and gone out
Mouthful, it is simple in construction, easy for installation；Floor space of the present invention is small, total figure arrangement is not had an impact, and can reduce investment outlay；Support member
So that the Stability Analysis of Structures of reflector 6, does not swing under the impact of air-flow, rocks.
In the present embodiment, according to actual dedusting needs and blast furnace crude gas dust-laden situation, the conical surface of design reflector 6
Angle between the conical surface of reflector 7 is 50~60 °, and the gap of annular mortar joint is 350~800mm, be can reach optimal anti-
Emanate and flow and be easy to gas ash to pass through.
In the present embodiment, provided with inspection manhole, (inspection manhole is one or more to cylinder 5, and inspection manhole is a little higher than
Reflector), reflector 7 is provided with access path (access path is linear or annular), and access path is connected with inspection manhole
And extend at annular mortar joint.Work and dust removing effects are influenceed to avoid annular mortar joint from being blocked by gas ash, inspection manhole is set
And access path, carry out artificial raked joint.
In the present embodiment, when the bottom of reflector 6 is located above the bottom opening of reflector 7, reflector 6 passes through support member
It is fastened on reflector 7, when the bottom of reflector 6 is located at below the bottom opening of reflector 7, reflector 6 passes through support member
Adjustable for height to be connected on cylinder 5, cylinder 5 is cylindrical to be provided with the regulation passage for being used for adjusting reflector height, passes through regulation
The height of reflector 6 improves the blocked situation of annular mortar joint to adjust the size of annular mortar joint.
In the present embodiment, the inside of reflector 6 is cavity, reduces the weight of reflector 6.
In the present embodiment, air inlet pipe 3 is rectangular tube, it is preferably rotated down along inwall.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (8)
- A kind of 1. tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting, it is characterised in that：Cylinder including closing, cylinder Body top center is communicated with blast pipe, bottom is communicated with least three around the uniform air inlet pipe of cylinder for collection ash silo, cylinder top, Air inlet pipe and cylinder are cylindrical tangent and are communicated to blast furnace crude gas outlet, in cylinder bottom be provided with the reflector coaxial with cylinder and Reflector, reflector are up-narrow and down-wide cone or cone column combination body, and reflector is wide at the top and narrow at the bottom, both ends open, will reflected The circular cone cover that body surrounds, forms annular mortar joint, reflector is consolidated along cylinder inboard wall between the conical surface of reflector and the conical surface of reflector Fixed, reflector is arranged on reflector or on cylinder by support member.
- 2. the tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting as claimed in claim 1, it is characterised in that：Reflection Angle between the conical surface of body and the conical surface of reflector is 50~60 °, and the gap of annular mortar joint is 350~800mm.
- 3. the tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting as claimed in claim 1, it is characterised in that：Cylinder Inspection manhole is provided with, reflector is provided with access path, and access path is connected with inspection manhole and extended at annular mortar joint.
- 4. the tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting as claimed in claim 1, it is characterised in that：Reflection When body bottom is located above reflector bottom opening, reflector is fastened on reflector by support member.
- 5. the tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting as claimed in claim 1, it is characterised in that：Reflection When body bottom is located at below reflector bottom opening, reflector is connected on cylinder by the way that support member is adjustable for height, outside cylinder Circle is provided with the regulation passage for being used for adjusting reflector height.
- 6. the tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting as claimed in claim 1, it is characterised in that：Reflection Internal portion is cavity.
- 7. the tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting as claimed in claim 1, it is characterised in that：Air inlet Pipe entrance point connects with reducer pipe and down-comer successively, and reducer pipe gradually narrows to cylinder, and down-comer is communicated to blast furnace crude gas Outlet.
- 8. the tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting as claimed in claim 1, it is characterised in that：Air inlet Manage as rectangular tube.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710879379.1A CN107502692A (en) | 2017-09-26 | 2017-09-26 | The tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting |
| RU2020114412A RU2020114412A (en) | 2017-09-26 | 2018-09-19 | Tangential multitube cyclone dust collector for primary dust removal from blast furnace gas |
| KR1020207011584A KR20200057055A (en) | 2017-09-26 | 2018-09-19 | Blast furnace primary multi-pipeline cyclone vibration damper |
| PCT/CN2018/106383 WO2019062612A1 (en) | 2017-09-26 | 2018-09-19 | Tangential multi-pipeline cyclone dust remover for primary dust removal of blast furnace gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710879379.1A CN107502692A (en) | 2017-09-26 | 2017-09-26 | The tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107502692A true CN107502692A (en) | 2017-12-22 |
Family
ID=60698844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710879379.1A Pending CN107502692A (en) | 2017-09-26 | 2017-09-26 | The tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR20200057055A (en) |
| CN (1) | CN107502692A (en) |
| RU (1) | RU2020114412A (en) |
| WO (1) | WO2019062612A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421361A (en) * | 2018-06-11 | 2018-08-21 | 兰州大学 | Cleaner and dust pelletizing system |
| WO2019062612A1 (en) * | 2017-09-26 | 2019-04-04 | 中冶南方工程技术有限公司 | Tangential multi-pipeline cyclone dust remover for primary dust removal of blast furnace gas |
| CN113769905A (en) * | 2021-09-26 | 2021-12-10 | 北京首钢国际工程技术有限公司 | Anti-blocking wear-resistant blast furnace gas dust recycling equipment |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110652829A (en) * | 2019-11-18 | 2020-01-07 | 秦皇岛中青冶金阀门有限公司 | Cyclone combined dust remover and dust removing method |
| CN110652831A (en) * | 2019-11-18 | 2020-01-07 | 秦皇岛中青冶金阀门有限公司 | Cyclone dust collector and dust collection method |
| CN112503505A (en) * | 2020-12-24 | 2021-03-16 | 广西容县楷茂木业有限公司 | Energy-concerving and environment-protective type steam apparatus for producing |
| CN118773389B (en) * | 2024-09-11 | 2024-11-19 | 山东齐诚工程技术有限公司 | A dust removal device for recovering and releasing coal gas from blast furnace and burning it for power generation |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004283677A (en) * | 2003-03-20 | 2004-10-14 | Nisshin Seifun Group Inc | Cyclone apparatus |
| CN101213026A (en) * | 2005-06-29 | 2008-07-02 | 丹尼利克里斯技术服务有限公司 | Cyclone separator for blast furnace gas |
| CN202099308U (en) * | 2011-04-01 | 2012-01-04 | 北京首钢国际工程技术有限公司 | Axial-flow type cyclone dust collector for blast-furnace gas |
| CN103501917A (en) * | 2011-04-19 | 2014-01-08 | 西门子有限公司 | Cyclone with a plurality of inlet ducts |
| CN204824943U (en) * | 2015-07-23 | 2015-12-02 | 中冶南方工程技术有限公司 | A single tube way tangential cyclone for blast furnace gas once removes dust |
| CN204874578U (en) * | 2015-07-23 | 2015-12-16 | 中冶南方工程技术有限公司 | Blast furnace gas dust pelletizing system |
| JP2016023358A (en) * | 2014-07-24 | 2016-02-08 | 株式会社Ihi | Purification apparatus for converter gas, converter system and purification method of converter gas |
| CN105779022A (en) * | 2016-03-10 | 2016-07-20 | 中国神华能源股份有限公司 | Cyclone separator and gas-liquid-solid separating system |
| CN207330975U (en) * | 2017-09-26 | 2018-05-08 | 中冶南方工程技术有限公司 | The tangential multi-pipeline cyclone dust collectors of blast furnace gas primary dedusting |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5743913A (en) * | 1980-08-28 | 1982-03-12 | Sumitomo Metal Ind Ltd | Temperature control method for blast furnace gas |
| CN102758042B (en) * | 2012-08-14 | 2013-09-25 | 唐忠库 | System for rotational flow dust removal and recovery of blast furnace roof raw gas and recovering method of blast furnace roof raw gas |
| CN107502692A (en) * | 2017-09-26 | 2017-12-22 | 中冶南方工程技术有限公司 | The tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting |
-
2017
- 2017-09-26 CN CN201710879379.1A patent/CN107502692A/en active Pending
-
2018
- 2018-09-19 KR KR1020207011584A patent/KR20200057055A/en not_active Ceased
- 2018-09-19 RU RU2020114412A patent/RU2020114412A/en unknown
- 2018-09-19 WO PCT/CN2018/106383 patent/WO2019062612A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004283677A (en) * | 2003-03-20 | 2004-10-14 | Nisshin Seifun Group Inc | Cyclone apparatus |
| CN101213026A (en) * | 2005-06-29 | 2008-07-02 | 丹尼利克里斯技术服务有限公司 | Cyclone separator for blast furnace gas |
| CN202099308U (en) * | 2011-04-01 | 2012-01-04 | 北京首钢国际工程技术有限公司 | Axial-flow type cyclone dust collector for blast-furnace gas |
| CN103501917A (en) * | 2011-04-19 | 2014-01-08 | 西门子有限公司 | Cyclone with a plurality of inlet ducts |
| JP2016023358A (en) * | 2014-07-24 | 2016-02-08 | 株式会社Ihi | Purification apparatus for converter gas, converter system and purification method of converter gas |
| CN204824943U (en) * | 2015-07-23 | 2015-12-02 | 中冶南方工程技术有限公司 | A single tube way tangential cyclone for blast furnace gas once removes dust |
| CN204874578U (en) * | 2015-07-23 | 2015-12-16 | 中冶南方工程技术有限公司 | Blast furnace gas dust pelletizing system |
| CN105779022A (en) * | 2016-03-10 | 2016-07-20 | 中国神华能源股份有限公司 | Cyclone separator and gas-liquid-solid separating system |
| CN207330975U (en) * | 2017-09-26 | 2018-05-08 | 中冶南方工程技术有限公司 | The tangential multi-pipeline cyclone dust collectors of blast furnace gas primary dedusting |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019062612A1 (en) * | 2017-09-26 | 2019-04-04 | 中冶南方工程技术有限公司 | Tangential multi-pipeline cyclone dust remover for primary dust removal of blast furnace gas |
| CN108421361A (en) * | 2018-06-11 | 2018-08-21 | 兰州大学 | Cleaner and dust pelletizing system |
| CN113769905A (en) * | 2021-09-26 | 2021-12-10 | 北京首钢国际工程技术有限公司 | Anti-blocking wear-resistant blast furnace gas dust recycling equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2020114412A (en) | 2021-10-27 |
| RU2020114412A3 (en) | 2021-10-27 |
| WO2019062612A1 (en) | 2019-04-04 |
| KR20200057055A (en) | 2020-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107502692A (en) | The tangential multi-pipeline cyclone dust collectors of blast furnace gas one-time dedusting | |
| CN101391239B (en) | Multi-effect cyclone separator | |
| CN201295649Y (en) | Gas-liquid whirlwind separator | |
| CN209735164U (en) | a dust collector | |
| CN206642897U (en) | The used manifold type mill separator of rotation | |
| CN203842821U (en) | Particle-grading powder separator | |
| CN106824571A (en) | A kind of cyclone separator | |
| JPH08266938A (en) | Classifying point variable type cyclone apparatus | |
| CN207722971U (en) | The dust pelletizing system of the tangential cyclone dust collectors of single-pipeline and the combination of wet scrubbing tower | |
| CN109225689A (en) | A kind of tubular cyclones | |
| CN208976077U (en) | A kind of tubular cyclones | |
| CN207330975U (en) | The tangential multi-pipeline cyclone dust collectors of blast furnace gas primary dedusting | |
| CN102671778A (en) | Cyclone dust collector with spiral air inlet pipe | |
| CN206642870U (en) | The used mill separator of binary channels rotation | |
| CN204874578U (en) | Blast furnace gas dust pelletizing system | |
| CN110523545A (en) | A kind of low pressure loss efficient cyclone separator | |
| CN207951756U (en) | Stop cyclone separator | |
| CN103845979A (en) | Gas dedusting device | |
| CN206549853U (en) | A kind of cyclone separator | |
| CN203315950U (en) | Efficient pretreatment device for smoke gas of industrial silicon '75 ferrosilicon' ore smelting furnace | |
| CN104801115B (en) | Dust pelletizing system containing oil fume | |
| CN206549858U (en) | A kind of constant-current type cyclone separator | |
| CN207871802U (en) | The dust pelletizing system of the tangential cyclone dust collectors of multi-pipeline and the combination of wet scrubbing tower | |
| CN110560276B (en) | Horizontal high-efficiency cyclone separator | |
| CN210846797U (en) | Horizontal high-efficiency cyclone separator |
Legal Events
| 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 |
Application publication date: 20171222 |
|
| RJ01 | Rejection of invention patent application after publication |