CN105861078B - A kind of bottom of tower draining of shaft furnace gas washer and water seal arrangement - Google Patents
A kind of bottom of tower draining of shaft furnace gas washer and water seal arrangement Download PDFInfo
- Publication number
- CN105861078B CN105861078B CN201610365103.7A CN201610365103A CN105861078B CN 105861078 B CN105861078 B CN 105861078B CN 201610365103 A CN201610365103 A CN 201610365103A CN 105861078 B CN105861078 B CN 105861078B
- Authority
- CN
- China
- Prior art keywords
- water seal
- tower
- discharge outlet
- drainpipe
- shaped water
- 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.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/101—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids with water only
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
-
- 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
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
- F16K13/08—Arrangements for cutting-off not used
- F16K13/10—Arrangements for cutting-off not used by means of liquid or granular medium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of draining of the bottom of tower of shaft furnace gas washer and water seal arrangements, hollow scrubbing tower including determining neck Venturi tube and with determining neck Venturi tube and connecting, the bottom of the hollow scrubbing tower is equipped with the bottom of tower of cone-shaped, the upper end of the bottom of tower is equipped with the first discharge outlet, first U-shaped water seal of the first discharge outlet and U-shape connects, first U-shaped water seal difference first exhaust desorption tube is connected with second exhaust desorption tube, the top of the first U-shaped water seal is connected to the first drainpipe, the lower end of the bottom of tower is equipped with the second discharge outlet, second U-shaped water seal of the second discharge outlet and U-shape connects, second U-shaped water seal is equipped with third and is vented desorption tube, the top of second U-shaped water seal is connected to the second drainpipe.The Coal-gas Washing Water Using of different dust contents is discharged in the bottom of tower draining of the shaft furnace gas washer of the present invention and water seal arrangement, three-level discharge outlet set-up mode respectively, efficiently solves the outlet of gas washing wetting system and pipeline is susceptible to the problems such as product becomes silted up, blocks.
Description
Technical field
The present invention relates to the draining of the bottom of tower of shaft furnace gas washer and water seal arrangements, belong to shaft furnace gas washer field.
Background technology
Shaft furnace coal gas enters 380~600 DEG C, 51~65Kpa of pressure of the temperature of washer, and impurity is mainly dust, content
~11.4g/Nm3；Into after washer, by rotating pipe nozzle spray, into Venturi tube, from the coal gas of Venturi tube lower part out
With the direct counter current contacting of a large amount of shower waters, most of dust is removed after washed cooling, subsequently enters dehydration device, then from washing
Device upper pipe is drawn, and the condensed water in shower water and coal gas falls into the lower part centrum of washer.Treated purified gas ash
Dust content is reduced to 50mg/Nm3Hereinafter, gas temperature is reduced to 40~50 DEG C, pressure is reduced to 35~58KPa, send to next technique
User；The water of the lower part centrum of washer recycles after sending to water treatment system purification.
In above-mentioned technological process, gas pressure be 35~58KPa, and coal gas belong to Class A it is explosive, it is toxic, flammable, can
It is partially soluble in the gas of water, during the washings dispatch of the lower part centrum of washer, common water seal arrangement easily occurs
Coal gas goes here and there leakage from water, causes safety problem；And it is contained a large amount of impurities in washings, be easy to cause pipeline and the obstruction of equipment
Problem.
Invention content
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of shaft furnace gas washer
Bottom of tower drains and water seal arrangement, can solve to exclude washings pipeline obstruction, prevent the series such as gas leak, effective venting of dust explosion from asking
Topic.
Technical solution：In order to solve the above technical problems, a kind of bottom of tower draining of shaft furnace gas washer of the present invention and water
Seal apparatus, including determine neck Venturi tube and with the hollow scrubbing tower determining neck Venturi tube and connect, the bottom of the hollow scrubbing tower is equipped with
The upper end of the bottom of tower of cone-shaped, the bottom of tower is equipped with the first discharge outlet, and the first U-shaped water seal of the first discharge outlet and U-shape connects,
The sealing-liquid duct of first U-shaped water seal is equipped with first exhaust desorption tube, and the water seal outlet top of the first U-shaped water seal is equipped with second exhaust
Desorption tube, exhaust desorption tube can be prevented respectively from more than the top that the coal gas parsed in washings drains into highest equipment 2 meters
The coal gas only parsed from washings enters downstream washing water treatment system, and the danger of gas poisoning, explosion occurs；Described
The top of one U-shaped water seal is connected to the first drainpipe, and the lower end of the bottom of tower is equipped with the second discharge outlet, the second discharge outlet and U-shaped
Second U-shaped water seal connection of shape, the water seal outlet of the second U-shaped water seal is equipped with third and is vented desorption tube, the top of the second U-shaped water seal
It is connected to the second drainpipe.
Preferably, being equipped with overflow plate between first discharge outlet and the second discharge outlet, overflow plate is heterotype steel plate, peace
Be installed adjacent to the first discharge outlet side, and the washings of bottom of tower be separated into Two Areas, most washings be by
After overflow, it is discharged into the first discharge outlet side, since second row mouth of a river caliber is small, water spray is very big in tower, in overflow plate
Water level keep constant, ensure bottom of tower overflow plate in water level height identical as overflow plate；Impurity in water is than great
Ion dust mud contaning, major part dirt mud has stayed in the region outside overflow plate when washings overflow, and such overflow plate is just washing moisture
It is divided into different concentration ranges.
Preferably, the bottom of the bottom of tower is connected to third drainpipe, it is equipped with clean-up port successively on third drainpipe
And fast opening/closing valve.
Preferably, the bottom of the bottom of tower is equipped with the 4th drainpipe, the 4th drainpipe is connected to precipitation vessel, the 4th row
Water pipe is located at the top for sinking to the bottom container, is connected to the 5th drainpipe at the top of precipitation vessel.
Preferably, being equipped with the flow valve of control uninterrupted on the 5th drainpipe.
Preferably, the cone angle of the bottom of tower is 30 °.
In the present invention, the washings dustiness of the first discharge outlet discharge is 749ppmw, the first discharge outlet and U-shape
First U-tube water seal connects, and the height of the horizontal tube of U-tube water seal water outlet is slightly below the overflow plate of bottom of tower, U-tube water seal water outlet
The height difference of horizontal tube and U-tube bottom be more than the operating pressure in scrubbing tower；The first U-shaped water seal respectively with positioned at water seal
The first exhaust desorption tube of entrance is connected with the second exhaust desorption tube at water seal outlet top, the first, second exhaust desorption tube row
What is released is the coal gas parsed from washings, ensures that the safety of downstream washings treatment process, the first U-shaped water seal go out
It is connected to simultaneously with the first drainpipe at the top of mouthful；The lower end of the bottom of tower is equipped with the second discharge outlet, and the washings dustiness of discharge is
The top of 7000ppmw, the second U-shaped water seal are connected to the second drainpipe；The bottommost of the bottom of tower is drained equipped with third
Mouthful, the washings dustiness of discharge is 9800ppmw.
In the present invention, gas washer is the structure that vertical Venturi tube is integrated with hollow scrubbing tower, and lower part sets tapered
Comprehensive no dead angle outlet, coal gas enters from Venturi portion entrance, is sent out from lower hollow scrubbing tower top exit, hollow to wash
Tower lower part cone setting safety water seal device is washed, water seal height is more than gas pressure.Coal-gas Washing Water Using centralized collection containing dust
To hollow scrubbing tower lower part cone, dust is maximum in the bottom concentration of scrubbing tower cone because gravitational settling acts on, the bottom of cone
One discharge outlet is set, and there are clean-up ports on drainpipe；Drainpipe be arranged fast opening/closing valve, washings dust-laden compared with
It is more, it is opened when being discharged unsmooth, such washer thoroughly solves the problems, such as that bottom easily product is become silted up, blocked；Gas washer bottom vertebra
Overflow plate is arranged in body side, ensures that liquid level is separated in certain safe altitude, while washings by concentration in tower；
A discharge outlet is arranged in overflow area, and the washings of overflow are discharged from discharge outlet, this portion of washing water dust content is relatively low；Draining
U-shaped water seal is set on pipeline, and water seal height meets safety requirements, and an exhaust diffusion mouth is respectively set before and after U-shaped water seal, and diffusion mouth draws
To safe altitude, the gas safety discharged from washings is made to be discharged.Gas washer bottom centrum lower side is arranged one
Discharge outlet, discharge are containing the more washings of dust, and washer bottom centrum angle is set as 30 °, ensures dust-laden washings
Siltation is not generated in centrum lower part；U-shaped water seal is set on drainage pipeline, and water seal height meets safety requirements, respectively set after U-shaped water seal
One exhaust diffusion mouth, diffusion mouth lead to safe altitude.
The present invention can make shaft furnace coal gas from 380~600 DEG C, 51~65Kpa of pressure of temperature, dust content~11.4g/
Nm3, temperature is reduced to 40~50 DEG C after washing, and pressure is reduced to~35KPa, and dust content is reduced to 50mg/Nm3Below；And solve coal
Gas washing device is easy to product silt, blocking and water seal safety problem；In addition, drainage system is arranged 3 by the dust content of washings
Discharge outlet respectively enters different water process processes, reduces the load of water processing establishment, plays the role of energy-saving and environment-friendly.
Advantageous effect：The bottom of tower draining of the shaft furnace gas washer of the present invention and water seal arrangement, three-level discharge outlet setting side
The Coal-gas Washing Water Using of different dust contents is discharged in formula respectively, efficiently solves the outlet of gas washing wetting system and pipeline is easy out
The problems such as now product becomes silted up, blocks；Drainage pipeline uses effective water seal height, ensures that the coal gas in washer will not be from drainage pipeline
Middle spilling ensure that the safe and environment-friendly problem of gas washer；Exhaust outlet is set in place on drainage pipeline, is made
Coal gas of the oligodynamical in washings is drawn safely when releasing gas, from desorption tube, eliminates the danger such as gas explosion, poisoning
Dangerous factor, air draft open height are arranged in safe altitude.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Specific implementation mode
As shown in Figure 1, a kind of bottom of tower draining of shaft furnace gas washer of the present invention and water seal arrangement, including determine neck Wen
Pipe 1 and with the hollow scrubbing tower 2 determining neck Venturi tube 1 and connect, the bottom of the hollow scrubbing tower 2 is equipped with the bottom of tower of cone-shaped, institute
The upper end for stating bottom of tower is equipped with the first discharge outlet 4, and the first discharge outlet 4 is connect with the first U-shaped water seal of U-shape, the first U-shaped water seal point
Other first exhaust desorption tube 9 and second exhaust desorption tube 10 connect, and top and the first drainpipe of the first U-shaped water seal connect
Logical, the lower end of the bottom of tower is equipped with the second discharge outlet 5, and the second discharge outlet 5 is connect with the second U-shaped water seal of U-shape, and second is U-shaped
Water seal is equipped with third and is vented desorption tube 11, and the top of the second U-shaped water seal is connected to the second drainpipe.
In the present invention, overflow plate 3 is equipped between first discharge outlet, 4 and second discharge outlet 5.The bottom of the bottom of tower
It is connected to third drainpipe 6, is equipped with clean-up port 7 and fast opening/closing valve 8 successively on third drainpipe 6.The bottom of the bottom of tower
Portion is equipped with the 4th drainpipe, and the 4th drainpipe is connected to precipitation vessel, and the 4th drainpipe is located at the top for sinking to the bottom container, is precipitating
The top of container is connected to the 5th drainpipe.The flow valve of control uninterrupted is installed on the 5th drainpipe.The tower
The cone angle at bottom is 30 °.
The coal gas that the present invention comes out from shaft furnace, 380~600 DEG C, 51~65Kpa of pressure of temperature, dust content~11.4g/
Nm3 is initially entered, and is flowed through at a high speed when determining neck 1 aditus laryngis of Venturi tube, coal gas tentatively cools down and removes a large amount of 1 micron or more of grit
Afterwards, enter, coal gas further cools down, removes little particle grit, and coal gas is after the dehydration of spiral board dehydrator, from hollow scrubbing tower
2 top exits are sent out；The washings for determining neck Venturi tube 1 and hollow scrubbing tower 2 fall into wash tower bottoms centrum；Overflow plate 3 blocks
Portion of washing water ensures the height of the washings of bottom of tower, is stored in the water of overflow area, continuous, a large amount of, fast by the first discharge outlet 4
Speed is discharged, and U-shaped water seal is arranged in the first discharge outlet 4, water seal height meets safety requirements, one first is respectively set before and after U-shaped water seal
It is vented desorption tube 9 and second exhaust desorption tube 10, diffusion mouth leads to safe altitude, and the gas safety discharged from washings is made to arrange
Go out；The higher washings of wash tower bottoms dust-laden are discharged by 5 continuous, small flow of the second discharge outlet, are arranged on drainage pipeline U-shaped
Water seal, water seal height meet safety requirements, and a third exhaust desorption tube 11 is set after U-shaped water seal.When dustiness is larger, second row
When 5 impeded drainage of the mouth of a river or a scrubbing tower washed water liquid level high position, fast opening/closing valve 8 is opened, scrubbing tower centrum bottom is made to contain
The higher washings of dust concentration are discharged by third drainpipe 6, when scrubbing tower washed water liquid level is normal, close quick-acting valve
Door 8；In abnormal cases, the product that 6 collector nozzle position of third drainpipe can also be cleared up by clean-up port 7 is become silted up, thus can be with
Ensure draining and the water seal safety problem of gas washer.
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (4)
1. the bottom of tower of shaft furnace gas washer drains and water seal arrangement, including determine neck Venturi tube and with the sky determining neck Venturi tube and connect
Heart scrubbing tower, it is characterised in that：The bottom of the hollow scrubbing tower is equipped with the bottom of tower of cone-shaped, and the upper end of the bottom of tower is equipped with the
First U-shaped water seal connection of one discharge outlet, the first discharge outlet and U-shape, the sealing-liquid duct of the first U-shaped water seal is equipped with first exhaust
The water seal outlet top of desorption tube, the first U-shaped water seal is equipped with second exhaust desorption tube, the top of the first U-shaped water seal and the
One drainpipe is connected to, and the lower end of the bottom of tower is equipped with the second discharge outlet, and the second U-shaped water seal of the second discharge outlet and U-shape connects,
The water seal outlet of second U-shaped water seal is equipped with third and is vented desorption tube, and the top of the second U-shaped water seal is connected to the second drainpipe；Institute
It states and is equipped with overflow plate between the first discharge outlet and the second discharge outlet, overflow plate is heterotype steel plate, is arranged close to the first discharge outlet
Side, and the washings of bottom of tower are separated into two regions；The bottom of the bottom of tower is connected to third drainpipe, is arranged in third
Clean-up port and fast opening/closing valve are equipped on water pipe successively.
2. the bottom of tower of shaft furnace gas washer according to claim 1 drains and water seal arrangement, it is characterised in that：The tower
The bottom at bottom is equipped with the 4th drainpipe, and the 4th drainpipe is connected to precipitation vessel, and the 4th drainpipe is located at the top for sinking to the bottom container,
It is connected to the 5th drainpipe at the top of precipitation vessel.
3. the bottom of tower of shaft furnace gas washer according to claim 2 drains and water seal arrangement, it is characterised in that：Described
The flow valve of control uninterrupted is installed on five drainpipes.
4. the bottom of tower of shaft furnace gas washer according to claim 1 drains and water seal arrangement, it is characterised in that：The tower
The cone angle at bottom is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365103.7A CN105861078B (en) | 2016-05-27 | 2016-05-27 | A kind of bottom of tower draining of shaft furnace gas washer and water seal arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610365103.7A CN105861078B (en) | 2016-05-27 | 2016-05-27 | A kind of bottom of tower draining of shaft furnace gas washer and water seal arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105861078A CN105861078A (en) | 2016-08-17 |
| CN105861078B true CN105861078B (en) | 2018-08-24 |
Family
ID=56642465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610365103.7A Active CN105861078B (en) | 2016-05-27 | 2016-05-27 | A kind of bottom of tower draining of shaft furnace gas washer and water seal arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105861078B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763040B (en) * | 2019-12-02 | 2024-01-30 | 中冶焦耐(大连)工程技术有限公司 | Quenching tower with water seal groove and working method thereof |
| CN113025396A (en) * | 2021-03-10 | 2021-06-25 | 中冶华天工程技术有限公司 | Liquid supply and drainage system of novel blast furnace gas desulfurization tower and operation method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201151713Y (en) * | 2007-07-12 | 2008-11-19 | 鞍钢集团设计研究院 | Gas purification washing tower of converter |
| CN202214342U (en) * | 2011-07-28 | 2012-05-09 | 江苏晋煤恒盛化工有限公司 | Water seal structure for washing tower of coal gasifier |
| CN103322244A (en) * | 2013-05-22 | 2013-09-25 | 济钢集团有限公司 | Novel U-shaped pipe gas water seal |
| US20130336861A1 (en) * | 2011-03-09 | 2013-12-19 | Linc Energy Ltd | Method and apparatus for treating a raw ucg product stream |
| CN204942625U (en) * | 2015-08-17 | 2016-01-06 | 昆明中天达玻璃钢开发有限公司 | The sealing structure for water of seal container |
| CN205774368U (en) * | 2016-05-27 | 2016-12-07 | 江苏省冶金设计院有限公司 | Draining and water seal arrangement at the bottom of the tower of a kind of shaft furnace gas washer |
-
2016
- 2016-05-27 CN CN201610365103.7A patent/CN105861078B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201151713Y (en) * | 2007-07-12 | 2008-11-19 | 鞍钢集团设计研究院 | Gas purification washing tower of converter |
| US20130336861A1 (en) * | 2011-03-09 | 2013-12-19 | Linc Energy Ltd | Method and apparatus for treating a raw ucg product stream |
| CN202214342U (en) * | 2011-07-28 | 2012-05-09 | 江苏晋煤恒盛化工有限公司 | Water seal structure for washing tower of coal gasifier |
| CN103322244A (en) * | 2013-05-22 | 2013-09-25 | 济钢集团有限公司 | Novel U-shaped pipe gas water seal |
| CN204942625U (en) * | 2015-08-17 | 2016-01-06 | 昆明中天达玻璃钢开发有限公司 | The sealing structure for water of seal container |
| CN205774368U (en) * | 2016-05-27 | 2016-12-07 | 江苏省冶金设计院有限公司 | Draining and water seal arrangement at the bottom of the tower of a kind of shaft furnace gas washer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105861078A (en) | 2016-08-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106384607B (en) | A kind of containment filtration exhaust system of long-term passive operation | |
| CN205774368U (en) | Draining and water seal arrangement at the bottom of the tower of a kind of shaft furnace gas washer | |
| CN107261730B (en) | High temperature coal smoke desulfurization removing nitric system | |
| CN105861078B (en) | A kind of bottom of tower draining of shaft furnace gas washer and water seal arrangement | |
| CN106823742A (en) | A kind of desulfurization and dust-removal method of double circulation desulphurization and dust-removing device and flue gas | |
| CN109161618A (en) | A kind of blast-furnace slag processing system and treatment process | |
| CN207296930U (en) | A kind of liquid-gas separator | |
| CN105688610A (en) | Dynamic wave washing tower having automatic sewage drainage function and washing method thereof | |
| CN107604116B (en) | Blast furnace gas treatment system and treatment method thereof | |
| CN207137594U (en) | The safe deslagging device of extraordinary phosphorus furnace exhaust gas pipeline on-load | |
| CN202418740U (en) | Improved water seal system for torch gas | |
| CN105885959A (en) | Vertical coal gas washing and dewatering integrated system | |
| CN202729831U (en) | Titanium tetrachloride washing and absorbing device | |
| CN201684533U (en) | Wet dust removal desulfurizing unit | |
| CN104961619B (en) | The method and apparatus of gas-phase polymerization polypropylene device start-up liquid propylene recovery | |
| CN207429893U (en) | Multiple-effect integration dust-laden exhaust gas controlling device | |
| CN2846424Y (en) | Environment protection type slag treating device by wheel method | |
| CN206304557U (en) | A kind of chemistry aspect desulfurating dust-removing equipment | |
| CN216236032U (en) | Purification system of by-product chlorine of metal sodium electrolytic cell | |
| CN203007302U (en) | Semi-dry dust-removing device for converter flue gas | |
| CN206435035U (en) | Desulfurizer | |
| CN107252593A (en) | High temperature coal smoke water bath dust removing system | |
| CN108114583A (en) | Control flue gas correlation atmospheric acid particulate matter and low-carbon control haze method and system | |
| CN207035938U (en) | A kind of space division system water-cooling tower automatic overflow device | |
| CN203816418U (en) | Multistage desulfurization and denitration dust removal device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20190102 Granted publication date: 20180824 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20220102 Granted publication date: 20180824 |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20220102 Granted publication date: 20180824 |