CN106885880A - A kind of abnormal quick judgment method of coke oven local heating - Google Patents
A kind of abnormal quick judgment method of coke oven local heating Download PDFInfo
- Publication number
- CN106885880A CN106885880A CN201710054057.3A CN201710054057A CN106885880A CN 106885880 A CN106885880 A CN 106885880A CN 201710054057 A CN201710054057 A CN 201710054057A CN 106885880 A CN106885880 A CN 106885880A
- Authority
- CN
- China
- Prior art keywords
- concentration
- coke oven
- gas
- stone roller
- heating
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 53
- 239000000571 coke Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000002159 abnormal effect Effects 0.000 title claims abstract description 13
- 241001504664 Crossocheilus latius Species 0.000 claims abstract description 28
- 239000003034 coal gas Substances 0.000 claims abstract description 24
- 239000002245 particle Substances 0.000 claims abstract description 22
- 238000003763 carbonization Methods 0.000 claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000010000 carbonizing Methods 0.000 claims abstract description 9
- 239000003546 flue gas Substances 0.000 claims abstract description 9
- 238000004939 coking Methods 0.000 claims abstract description 8
- 229910001651 emery Inorganic materials 0.000 claims abstract description 7
- 239000010977 jade Substances 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 38
- 230000007423 decrease Effects 0.000 claims description 10
- 230000000630 rising effect Effects 0.000 claims description 9
- 239000002912 waste gas Substances 0.000 claims description 6
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/004—CO or CO2
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0042—SO2 or SO3
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
A kind of abnormal quick judgment method of coke oven local heating, it includes：A) setting can detect CO, SO2, particle content testing equipment in chimney at the height of 67 times of coke oven chimney bottom diameter；B) there is card stone roller in coal gas side or air side top bar, and CO contents continue superelevation in coke oven flue gas are detected, more than 450mg/m3Duration, more than more than 4 minutes, sends alarm, confirms that coal gas side or air side top bar occur card and cut or polish jade with an emery wheel and process by operating personnel；C) leakage of furnace head carbonizing chamber string, works as SO2When content, CO contents and particle content exceed setting value, alarm is sent in control room, operating personnel then judge that the leakage of carbonization chamber string causes or occur card stone roller according to alarm signal, set SO2Concentration<30mg/Nm3, CO concentration<300mg/Nm3, particle concentration<15mg/Nm3；Work as SO2When concentration, particle concentration are exceeded, non-coking chamber wall string leakage is judged；When CO content overproofs, judge card stone roller.
Description
Technical field
The present invention relates to coke oven technology, the abnormal quick judgment method of more particularly to a kind of coke oven local heating.
Background technology
Coke oven masonry is all built by laying bricks or stones by resistance to material and formed, complex structure, and heating quirk is numerous, and local heating is all Jiao extremely
The persistent ailment that stove often faces, coke oven local heating can be specifically divided into single hole exhaust gas disc coal gas side card stone roller, single hole exhaust gas disc extremely
Situations such as air side card stone roller, part coal gas plate leak disconnected, carbonizing chamber part string.
Original technology is when there is local heating failure in coke oven, it is difficult to find in time, can only wait until every four hours one time
Just it is found during thermometric operation, or chimney over-emitting black exhaust is just learnt, causes furnace temperature drastically to decline, and influences the efficiency of heating surface and body of heater longevity
Life, causes environmental risk.
The content of the invention
It is an object of the invention to provide the quick judgment method that a kind of coke oven local heating is abnormal, can quickly discovery innings
Portion's heating is abnormal, individual combustor temperature is not significantly declined, that is, improve the efficiency of heating surface and in turn ensure that body of heater safety, disappears
Except environmental risk.
To reach above-mentioned purpose, the technical scheme is that：
A kind of abnormal quick judgment method of coke oven local heating, it includes：
A) setting can detect CO, SO2, particle content testing equipment in the height away from 6-7 times of coke oven chimney bottom diameter
At degree in chimney；Coke-stove gas heating system regenerator separates, and half is heating gas upward system, and half is coal gas after burning
Descending system, is once exchanged for every 20~30 minutes, that is, the heating gas for rising are converted into the exhaust steam passage of decline, and original declines
Exhaust steam passage be converted into the heating gas passage of rising, so move in circles；Under normal circumstances, heating gas CO after exchange
Concentration is increased to 1800mg/m3More than, maintain peak to more than 2 minutes, then it is reduced to normal value 300mg/m3Hereinafter, explanation
Fired state is normal；
B) there is card stone roller in coal gas side or air side top bar
CO contents continue superelevation in coke oven flue gas are detected, more than 450mg/m3Duration, more than more than 4 minutes, is sent out
Go out alarm, confirm that coal gas side or air side top bar occur card and cut or polish jade with an emery wheel and process by operating personnel；Wherein,
After the completion of heating gas exchange, CO concentration remains high always, more than 650mg/m34 minutes duration with
On, then there is coal gas side card stone roller situation in carbonization chamber heating gas system；
After the completion of heating gas exchange, CO change in concentration trend shows as CO concentration can be declined, but be dropped to
550mg/m3Just no longer decline, then air side card stone roller situation occurs；
C) furnace head carbonizing chamber string leakage
Work as SO2When content, CO contents and particle content exceed setting value, alarm, operating personnel's root are sent in control room
According to alarm signal, then judge that the leakage of carbonization chamber string causes or occur card stone roller, set SO2Concentration<30mg/Nm3, CO concentration<300mg/
Nm3, particle concentration<15mg/Nm3；
Work as SO2When concentration, particle concentration are exceeded, non-coking chamber wall string leakage is judged；When CO content overproofs, hair is judged
Raw card stone roller.
Difference with the prior art of the present invention：
When the inventive method is heated by the CO change in concentration occurred in coke oven heating system combustion process with normal condition
CO concentration contrasted, heating gas exchange 2 minutes after, if CO concentration exceed normal combustion state under CO concentration when,
Send alarm in time；By to flue gas SO2Concentration, CO concentration and particle concentration change to judge that burner leaks with the presence or absence of string,
So that by inspection of the operating personnel to corresponding site, the position of carbonization chamber local anomaly heating is found in time, and take in time
Measure, it is to avoid because local heating is abnormal and caused by the injury of carbonization chamber body of heater, eliminate environmental risk.
The heating abnormal conditions such as coal gas side card is cut or polish jade with an emery wheel, air side card stone roller occur, and 4 hours are needed even more by discovery time before
Length foreshortens to the present present invention and only needs to 5 minutes；Coking chamber wall string leak, by former manually observation chimney whether over-emitting black exhaust
To confirm that coking chamber wall string leaks, being found in time by detection till now, it is to avoid the leakage of coking chamber wall string is because of personnel's carelessness
And the furnace wall for causing further is damaged, the pollution to environment is reduced.
By the invention it is possible to the abnormal discovery time of coke oven local heating is greatly shortened, so as to avoid coke oven furnace temperature
The permanent damage that fluctuation, reduction gas loss and local anomaly are caused to body of heater and equipment, it is also possible to reduce because of CO in waste gas
Coke oven chimney over-emitting black exhaust environment event that is exceeded and causing occurs, and environmental protection while energy-conservation is killed two birds with one stone.
Specific embodiment
A kind of abnormal quick judgment method of coke oven local heating of the invention, it includes：
A) setting can detect CO, SO2, particle content testing equipment in the height away from 6-7 times of coke oven chimney bottom diameter
At degree in chimney；Coke-stove gas heating system regenerator separates, and half is heating gas upward system, and half is coal gas after burning
Descending system, is once exchanged for every 20~30 minutes, that is, the heating gas for rising are converted into the exhaust steam passage of decline, and original declines
Exhaust steam passage be converted into the heating gas passage of rising, so move in circles；Under normal circumstances, heating gas CO after exchange
Concentration is increased to 1800mg/m3More than, maintain peak to more than 2 minutes, then it is reduced to normal value 300mg/m3Hereinafter, explanation
Fired state is normal；
B) there is card stone roller in coal gas side or air side top bar
CO contents continue superelevation in coke oven flue gas are detected, more than 450mg/m3Duration, more than more than 4 minutes, is sent out
Go out alarm, confirm that coal gas side or air side top bar occur card and cut or polish jade with an emery wheel and process by operating personnel；Wherein,
After the completion of heating gas exchange, CO concentration remains high always, more than 650mg/m34 minutes duration with
On, then there is coal gas side card stone roller situation in carbonization chamber heating gas system；
After the completion of heating gas exchange, CO change in concentration trend shows as CO concentration can be declined, but be dropped to
550mg/m3Just no longer decline, then air side card stone roller situation occurs；
C) furnace head carbonizing chamber string leakage
Work as SO2When content, CO contents and particle content exceed setting value, alarm, operating personnel's root are sent in control room
According to alarm signal, then judge that the leakage of carbonization chamber string causes or occur card stone roller, set SO2Concentration<30mg/Nm3, CO concentration<300mg/
Nm3, particle concentration<15mg/Nm3；
Work as SO2When concentration, particle concentration are exceeded, non-coking chamber wall string leakage is judged；When CO content overproofs, hair is judged
Raw card stone roller.
Embodiment
CO and SO in coke oven heating burning waste gas will be monitored2, particle content testing equipment be arranged on coke oven chimney 55
On rice platform high, the coke oven flue gas that will be detected by equipment such as wires are sent into the testing equipment of bottom, then
CO, the SO that will be detected by testing equipment2, particulate matter equal size delivers to coke oven control room, and shows on coke oven control room CRT pictures
Show, the higher limit of all kinds of materials is set in a program, when detecting the class gas content of any of which one or particle content exceedes
During setting value, alarm signal is sent, remind operating personnel to be confirmed to abnormal information, processed.
Coke-stove gas heating system, because of the demand that carbonization chamber is averagely heated, is separated to regenerator, is generally divided into 32
Lattice.Wherein half is heating gas upward system, and half is coal gas descending system after burning, to keep coke furnace carbonization chamber temperature
Uniformity, is once exchanged for every 20~30 minutes, that is, the heating gas for rising are converted into the exhaust steam passage of decline, what original declined
Exhaust steam passage is converted into the heating gas passage of rising；So move in circles.
1st, normal condition CO variation tendencies
Under normal circumstances, CO concentration quickly rises to 1800mg/m to heating gas after exchange3More than, maintain peak to 2
Minute, then it is rapidly reduced to normal value 300mg/m3Below.There is the CO Changing Patterns explanation fired state of above state just
Often.
2nd, there is card stone roller in coal gas side
When the situation of the coal gas side card stone roller in there is carbonization chamber heating gas system, completion is exchanged in heating gas
Afterwards, CO concentration remains high always, about or so half an hour duration, and its reason is that coal gas side stone roller bar does not fall after exchanging, on
The coal gas for rising directly under the suction of coke oven chimney, is attracted to flue, and then by CO detection means detections.
3rd, air side card stone roller
When there is the situation of air side card stone roller, air side card stone roller occurs after exchange, and CO variation tendencies show as, CO meetings
Decline, but drop to 550mg/m3Left and right just no longer declines, and reason is that the partial air of infeed is in cigarette after air side card is cut or polish jade with an emery wheel
Under chimney suction, flue is attracted to, so as to cause the coal gas for feeding to burn completely, after the CO in waste gas will be than normal combustion
CO contents will height in waste gas.
CO contents continue superelevation in coke oven flue gas are detected, and setting is more than 450mg/m3Duration more than 4 minutes, just
Alarm is sent, confirms that coal gas side or air side top bar occur card and cut or polish jade with an emery wheel and process by operating personnel.
4th, furnace head carbonizing chamber string leakage
When there is carbonizing chamber in the presence of string leakage situation, it may appear that the peak value of multiple different CO concentration over-standards, exceeded peak
Value is to be influenceed by coal, and CO is lifted rapidly in waste gas.The brickwork joint of ordinary circumstance carbonizing chamber is all clogged by graphite, but graphite sometimes
Also can come off, so as to raw coke oven gas enters combustion chamber in causing carbonizing chamber, final CO is by by CO detection means detections；Simultaneously as
There is string and leak in carbonization chamber, the SO in carbonization chamber in raw coke oven gas2Can also enter in combustion chamber side flue with particulate matter, so, SO2With
Particulate matter can also be detected after chimney is entered, and work as SO2When content, CO contents and particle content exceed setting value, control
Interior sends alarm, and operating personnel are according to alarm signal, it can be determined that be carbonization chamber string leakage cause or card stone roller cause contain
Amount is exceeded.According to standard, SO is typically set2Concentration<30mg/Nm3, CO concentration<300mg/Nm3, particle concentration<15mg/
Nm3, work as SO2When concentration and exceeded particle concentration, alarm is sent immediately, work as SO2, CO, particle concentration it is all exceeded when, sentence
Fixed non-coking chamber wall string leakage.
As the enhancing of environmental protection consciousness, country are more and more severeer to the standard of coke oven flue gas discharge, can send out in time
The exceeded state of existing coke oven chimney smoke discharge, eliminates ambient influnence, therefore, the feasibility and prospect of present apparatus popularization and application are
It is very wide, larger effect will be brought to reduce the aspects such as coke oven flue gas discharge beyond standards, environmental protection.
Claims (1)
1. the abnormal quick judgment method of a kind of coke oven local heating, it is characterized in that, including：
A) setting can detect CO, SO2, particle content testing equipment in the cigarette at the height of 6-7 times of coke oven chimney bottom diameter
In chimney；Coke-stove gas heating system regenerator separates, and half is heating gas upward system, and half is coal gas decline system after burning
System, is once exchanged for every 20~30 minutes, that is, the heating gas for rising are converted into the exhaust steam passage of decline, the waste gas that original declines
Passage is converted into the heating gas passage of rising, so moves in circles；Under normal circumstances, heating gas CO concentration liter after exchange
Height arrives 1800mg/m3More than, maintain peak to more than 2 minutes, then it is reduced to normal value 300mg/m3Hereinafter, the shape that burns is illustrated
State is normal；
B) there is card stone roller in coal gas side or air side top bar
CO contents continue superelevation in coke oven flue gas are detected, more than 450mg/m3Duration, more than more than 4 minutes, sends police
Report, confirms that coal gas side or air side top bar occur card and cut or polish jade with an emery wheel and process by operating personnel；Wherein,
After the completion of heating gas exchange, CO concentration remains high always, more than 650mg/m3More than 4 minutes duration, then send out
Card stone roller situation in coal gas side in raw carbonization chamber heating gas system；
After the completion of heating gas exchange, CO change in concentration trend shows as CO concentration can be declined, but drop to 550mg/m3Just
No longer decline, then air side card stone roller situation occurs；
C) furnace head carbonizing chamber string leakage
Work as SO2When content, CO contents and particle content exceed setting value, alarm is sent in control room, operating personnel are according to alarm
Signal, then judge that the leakage of carbonization chamber string causes or occur card stone roller, sets SO2Concentration<30mg/Nm3, CO concentration<300mg/Nm3,
Grain thing concentration<15mg/Nm3；
Work as SO2When concentration, particle concentration are exceeded, non-coking chamber wall string leakage is judged；When CO content overproofs, judgement blocks
Stone roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054057.3A CN106885880A (en) | 2017-01-22 | 2017-01-22 | A kind of abnormal quick judgment method of coke oven local heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710054057.3A CN106885880A (en) | 2017-01-22 | 2017-01-22 | A kind of abnormal quick judgment method of coke oven local heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106885880A true CN106885880A (en) | 2017-06-23 |
Family
ID=59176442
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710054057.3A Pending CN106885880A (en) | 2017-01-22 | 2017-01-22 | A kind of abnormal quick judgment method of coke oven local heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106885880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235287A (en) * | 2021-11-18 | 2022-03-25 | 五冶集团上海有限公司 | Method and device for evaluating wall-through leakage of heating wall of coke oven |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1150058A (en) * | 1997-08-05 | 1999-02-23 | Sumitomo Metal Ind Ltd | Early detection of abnormal state in carbonizing chamber of coke oven |
| CN102944129B (en) * | 2012-10-23 | 2014-04-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for efficiently preheating coke oven gas |
-
2017
- 2017-01-22 CN CN201710054057.3A patent/CN106885880A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1150058A (en) * | 1997-08-05 | 1999-02-23 | Sumitomo Metal Ind Ltd | Early detection of abnormal state in carbonizing chamber of coke oven |
| CN102944129B (en) * | 2012-10-23 | 2014-04-30 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for efficiently preheating coke oven gas |
Non-Patent Citations (2)
| Title |
|---|
| 仇振东等: "《焦炉煤气净化的分析与探讨》", 《山西化工》 * |
| 马志等: "《焦炉加热废气中CO含量的控制》", 《燃料与化工》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235287A (en) * | 2021-11-18 | 2022-03-25 | 五冶集团上海有限公司 | Method and device for evaluating wall-through leakage of heating wall of coke oven |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101149142B1 (en) | Apparatus and method for removing carbon | |
| CA3125332A1 (en) | Decarbonization of coke ovens, and associated systems and methods | |
| CN104736673A (en) | Automatic draft control system for coke plants | |
| KR101386053B1 (en) | Apparatus and method of combustion exhaust control in regenerative reheating furnace | |
| CN108592081B (en) | Porous media combustor control system and method towards high temperature heating art | |
| CN106197052A (en) | A kind of method of controlling security for chemical industry heating furnace | |
| JP4677785B2 (en) | Sinter ore manufacturing apparatus and method | |
| CN106885880A (en) | A kind of abnormal quick judgment method of coke oven local heating | |
| JP5428593B2 (en) | Combustion abnormality diagnosis method for combustion furnace | |
| CN102304369B (en) | Oven-drying working process for coke dry quenching system | |
| CN206014991U (en) | A kind of combustion stablized dry-off oven device for blast furnace | |
| CN105047039A (en) | Multifunctional fire test furnace system device | |
| CN104061784B (en) | Annular lime kiln maintenance construction method | |
| CN106017091A (en) | Anti-explosion safe industrial furnace | |
| CN108956459B (en) | Hot-state detection method for refractory material in hot blast stove | |
| CN105694920A (en) | Method for repairing inter-leakage of silicon carbide brick walls of coke oven regenerative chamber in production | |
| CN205535739U (en) | Gas boiler furnace gas concentration on -line measuring device | |
| CN205403141U (en) | Pottery hot -blast furnace device | |
| CN107166430A (en) | A kind of explosion-proof measure and control device of gas liquid fuel boiler burner hearth and detection method | |
| CN108278854A (en) | A kind of diesel oil furnace drying method | |
| AU2013212532A1 (en) | A method for detection and monitoring of clinker formation in power stations | |
| CN106623395A (en) | Energy-saving organic polluted soil thermal desorption repairing complete equipment | |
| CN214612290U (en) | Coke oven firewall cracking monitoring system | |
| CN205027148U (en) | Combustor and industrial furnace monitored control system | |
| CN205208521U (en) | Novel subassembly boiler device |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170623 |