CN103452651A - Inside-mixing large-bore high-hydrogen-content gas engine - Google Patents
Inside-mixing large-bore high-hydrogen-content gas engine Download PDFInfo
- Publication number
- CN103452651A CN103452651A CN2013104199344A CN201310419934A CN103452651A CN 103452651 A CN103452651 A CN 103452651A CN 2013104199344 A CN2013104199344 A CN 2013104199344A CN 201310419934 A CN201310419934 A CN 201310419934A CN 103452651 A CN103452651 A CN 103452651A
- Authority
- CN
- China
- Prior art keywords
- air
- gas
- inner tube
- outer tube
- suction tude
- 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
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses an inside-mixing large-bore high-hydrogen-content gas engine which comprises an engine cylinder cover. The engine cylinder cover is connected with a gas inlet system; the gas inlet system comprises a gas inlet pipe inner tube and a gas inlet pipe outer tube; the gas inlet pipe inner tube and the gas inlet pipe outer tube are respectively provided with air and gas inlet branch pipes; the air and gas inlet branch pipes are respectively communicated with the gas inlet pipe inner tube and the gas inlet pipe outer tube; an air-fuel ratio control system comprises a controller, a mixer inner tube and a mixer outer tube; the mixer inner tube and the mixer outer tube are respectively provided with air and gas electric regulating valves; the air and gas electric regulating valves are connected with the controller; the gas inlet system is connected with the air-fuel ratio control system. According to the invention, complete insulation of gas and air outside an engine cylinder is implemented; the dangers of backfire and blasting of combustible gas are avoided; the air-fuel ratio control system on the basis of a PLC (Programmable Logic Controller) flexibly and accurately controls gas inflow of the gas and the air and enables a unit to stably operate; the integral engine has a simple structure, is low in cost, has a low fault rate and is convenient to maintain.
Description
Technical field
The present invention relates to a kind of motor, be specifically related to the high hydrogen gas engine of the large cylinder diameter of a kind of internal-mixing.
Background technique
The continuous aggravation that brings external pressure along with the consumption of the continuous growth of China's energy demand and fossil energy, the exploitation of Non Conventional Energy Sources and renewable energy sources more and more come into one's own, various countries' national policy is vigorously supported energy-saving and emission-reduction, Engine Industry all is devoted to the exploitation of gas engine both at home and abroad, and the combustion gas motor set product kinds such as rock gas, gas, biogas are also more and more.
The key technology of fuel gas generation unit is gas supply system and auxiliary fuel supply-system, and gas supply system is different internal-mixing and the premixed two large classes of being divided into from the air hybrid mode by combustion gas.No matter which kind of hybrid mode, can combustion gas fully mix according to correct air fuel ratio with air, is all crucial problem.
Gas engine gas handling system in the market mostly is premixed.When the higher combustion gas of the hydrogeneous tolerance such as engine for combusting biogas, coke-stove gas, impact due to the character such as the burning-point of hydrogen is lower, velocity of combustion is very fast, motor very easily occurs that the air inlet-outlet pipe tempering blows out phenomenon, cause the generating set power fluctuation, fluctuation of service, thus make high Hydrogen fuel reduce in the utilization ratio of field of internal combustion engine.In addition, also has a kind of electric control solenoid valve of installing to realize the gas handling system of single-point discharge on each cylinder cylinder head air intake branch, but the control system of this intake method is comparatively complicated, and combustion gas mixes in the cylinder cap intake duct with air, do not accomplish the mixed combustion in firing chamber fully, still have tempering hidden danger.Secondly, this type of generator mostly is external product, and the complete machine cost is higher, and motor is subject to solenoid valve life-span limitation more serious.
Summary of the invention
According to above deficiency of the prior art, the object of the invention is to: provide that a kind of air intake system structure is simple, the air fuel ratio precise control, the high hydrogen gas engine of the large cylinder diameter of the internal-mixing that the complete machine cost is low.
The technical solution adopted for the present invention to solve the technical problems is:
The high hydrogen gas engine of the large cylinder diameter of internal-mixing, comprise engine cylinder cap, engine cylinder cap and gas handling system are joined, gas handling system comprises suction tude inner tube and suction tude outer tube, the suction tude inner tube is located at suction tude outer tube inside, air inlet arm and gas inlet arm are located at respectively suction tude inner tube and suction tude outer tube homonymy side by side, the air inlet arm communicates with the suction tude inner tube, the gas inlet arm communicates with the suction tude outer tube, auxiliary fuel supply-system comprises controller, the mixer inner tube, the mixer outer tube, mixer inner tube one end is provided with the air electric control valve, mixer outer tube one end is provided with the combustion gas electric control valve, the air electric control valve is connected with controller with the combustion gas electric control valve, auxiliary fuel supply-system and gas handling system are joined.
Air and combustion gas flow into by mixer inner tube and mixer outer tube respectively, the position of docking with the suction tude inner tube in the mixer inner tube is provided with the air electric control valve, the position connected at mixer outer tube and suction tude outer tube is provided with the combustion gas electric control valve, controller can be controlled the aperture of air electric control valve and combustion gas electric control valve and carry out adjusting air-fuel ratio, control accurately, air and combustion gas enter respectively that the suction tude inner tube of gas handling system and suction tude outer tube surround two be space fully independently, fully mutually isolated outside cylinder, avoided the inflammable gas tempering, the danger of blowing out, and gas handling system only is comprised of simple pipeline configuration, required cost is lower.
Preferably, described engine cylinder cap is Four-valve cylinder head, cylinder is stamped two intake valves and two exhaust valves, two intake valves independently intake duct of ining succession separately, after two exhaust valves are first independent, disjunctors share air outlet flues, and intake duct and air outlet flue are located at respectively the cylinder head both sides, two independently intake duct can guarantee mutually to completely cut off before air and combustion gas enter cylinder, two exhaust valves share an air outlet flue and can simplify engine air cylinder head structure, save space and material.
Preferably, two intake ducts of described engine cylinder cap dock with air inlet arm and gas inlet arm respectively, guarantee to isolate fully before air and combustion gas enter cylinder.
Preferably, described mixer inner tube is docked with the suction tude inner tube, the mixer outer tube docks with the suction tude outer tube, mixer inner tube and suction tude inner tube and air inlet arm form air communication channel, mixer outer tube suction tude outer tube and gas inlet arm have just surrounded the gas circulation passage with corresponding outer wall of inner tube, and air communication channel and gas circulation Channel Perfect are isolated.
Preferably, described controller is the PLC controller, can control by the aperture to air electric control valve and combustion gas electric control valve, realizes the accurate control of air fuel ratio, guarantees the normal operation of gas engine.
Preferably, described gas handling system adopts the suction tude adpting flange to be connected with the mixer adpting flange with auxiliary fuel supply-system, guaranteed the sealing that gas handling system is connected with auxiliary fuel supply-system, avoided air to sneak into blast tube or gas leakage, eliminated safe hidden trouble.
Preferably, described air electric control valve and combustion gas electric control valve adopt electric butterfly valve, control the air inflow of air and combustion gas.
Preferably, described cylinder covers and is provided with temperature transducer, temperature transducer is connected with controller, temperature transducer is measured the temperature of engine cylinder cap in real time, and temperature data is transferred to controller, controller carries out analysing and processing to temperature data, regulates the aperture of air electric control valve and combustion gas electric control valve thereupon, controls air and gas inlet amount.
When the present invention works, at first, according to after combustion gas gas composition analysis theoretical air-fuel ratio, combustion gas electric control valve and air electric control valve are reserved to suitable aperture, auxiliary fuel supply-system is tentatively adjusted.Now, air enters the air communication channel that mixer inner tube and suction tude inner tube and air inlet arm form after adjusting air inflow by the air electric control valve, combustion gas enters the mixer outer tube after adjusting air inflow by the combustion gas electric control valve, suction tude outer tube and gas inlet arm and the gas circulation passage that outer wall of inner tube surrounds accordingly, when motor runs to suction stroke, cylinder covers two intake valves and opens, combustion gas and air are respectively by being connected with two intake ducts and distinct gas inlet arm air inlet arm enters in cylinder and carries out mixed combustion.In running, the temperature signal that the PLC controller records by the upper temperature transducer of analyzing cylinder, combustion gas electric control valve and air motorized adjustment valve opening are adjusted automatically, controlled air and gas flow, thereby motor is moved always under suitable air fuel ratio situation.
Compared with prior art, the present invention has following beneficial effect:
(1) gas handling system has realized fully isolated in the cylinder outside of combustion gas and air, mixed combustion in firing chamber, the danger of thoroughly avoided the inflammable gas tempering, blowing out.
(2) auxiliary fuel supply-system based on PLC can be controlled the air inflow of combustion gas and air sensitive, accurately, makes unit operation and power stage stable.
(3) gas handling system and auxiliary fuel supply-system are simple in structure, and cost is low, and rate of fault is few, are convenient to safeguard.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
A-A sectional drawing of the present invention in Fig. 2 Fig. 1.
B-B sectional drawing of the present invention in Fig. 3 Fig. 1.
In figure: 1, suction tude outer tube; 2, suction tude inner tube; 3, air inlet arm; 4, gas inlet arm; 5, suction tude adpting flange; 6, mixer adpting flange; 7, mixer inner tube; 8, mixer outer tube; 9, combustion gas electric control valve; 10, air electric control valve; 11, engine cylinder cap; 12, intake valve; 13, exhaust valve.
Embodiment:
Below in conjunction with accompanying drawing, the embodiment of the present invention is further described.
Referring to Fig. 1 to Fig. 3, the high hydrogen gas engine of the large cylinder diameter of the described internal-mixing of the present embodiment comprises engine cylinder cap 11, engine cylinder cap 11 joins with gas handling system, gas handling system comprises suction tude inner tube 2 and suction tude outer tube 1, suction tude inner tube 2 is located at suction tude outer tube 1 inside, air inlet arm 3 and gas inlet arm 4 are located at respectively suction tude inner tube 2 and suction tude outer tube 1 homonymy side by side, air inlet arm 3 communicates with suction tude inner tube 2, gas inlet arm 4 communicates with suction tude outer tube 1, auxiliary fuel supply-system comprises controller, mixer inner tube 7, mixer outer tube 8, mixer inner tube 7 one ends are provided with air electric control valve 10, mixer outer tube 8 one ends are provided with combustion gas electric control valve 9, air electric control valve 10 is connected with controller with combustion gas electric control valve 9, auxiliary fuel supply-system and gas handling system are joined.In Fig. 1, dotted arrow means air-flow direction, and solid arrow means the fuel gas flow direction.
Wherein, engine cylinder cap 11 is Four-valve cylinder head, engine cylinder cap 11 has two intake valves 12 and two exhaust valves 13, two intake valves 12 independently intake duct of ining succession separately, two first independent rear disjunctors of exhaust valve 13 share an air outlet flue, intake duct and air outlet flue are located at respectively the cylinder head both sides, two independently intake duct can to guarantee that air and combustion gas enter before cylinder mutually isolated, two exhaust valves 13 share an air outlet flue and can simplify engine cylinder cap 11 structures, save space and material; Two intake ducts of engine cylinder cap 11 dock with air inlet arm 3 and gas inlet arm 4 respectively, guarantee to isolate fully before air and combustion gas enter cylinder; Mixer inner tube 7 is docked with suction tude inner tube 2, mixer outer tube 8 docks with suction tude outer tube 1, mixer inner tube 7 has formed air communication channel with suction tude inner tube 2 and air inlet arm 3, mixer outer tube 8, suction tude outer tube 1 and gas inlet arm 4 have just surrounded the gas circulation passage with corresponding outer wall of inner tube, and air communication channel and gas circulation Channel Perfect are isolated; Controller is the PLC controller, can control by the aperture to air electric control valve 10 and combustion gas electric control valve 9, realizes the accurate control of air fuel ratio; Gas handling system adopts suction tude adpting flange 5 to be connected with mixer adpting flange 6 with auxiliary fuel supply-system, has guaranteed the sealing that gas handling system is connected with auxiliary fuel supply-system, avoids air to sneak into blast tube or gas leakage, eliminates safe hidden trouble; Air electric control valve 10 and combustion gas electric control valve 9 adopt electric butterfly valve, control the air inflow of air and combustion gas; Engine cylinder cap 11 is provided with temperature transducer, temperature transducer is connected with controller, temperature transducer is measured the temperature of engine cylinder cap 11 in real time, and temperature data is transferred to controller, controller carries out analysing and processing to temperature data, regulate the aperture of air electric control valve 10 and combustion gas electric control valve 9 thereupon, control air and gas inlet amount.
Embodiment of the present invention working procedure is as follows:
At first according to after combustion gas gas composition analysis theoretical air-fuel ratio, combustion gas electric control valve 9 and air electric control valve 10 are reserved to suitable aperture, auxiliary fuel supply-system is tentatively adjusted.Now, air is adjusted the air communication channel that enters mixer inner tube 7 and suction tude inner tube 2 and air inlet arm 3 compositions after air inflow by air electric control valve 10, combustion gas enters mixer outer tube 8 after adjusting air inflow by combustion gas electric control valve 9, suction tude outer tube 1 and gas inlet arm 4 and the gas circulation passage that outer wall of inner tube surrounds accordingly, when motor runs to suction stroke, cylinder covers two intake valves 12 and opens, combustion gas and air are respectively by being connected with two intake ducts and distinct gas inlet arm 4 enters in cylinder and carries out mixed combustion with air inlet arm 3, tail gas after burning is discharged via exhaust valve 13.In running, the PLC controller is by analyzing the temperature signal that on engine cylinder cap 11, temperature transducer records, combustion gas electric control valve 9 and air electric control valve 10 apertures are adjusted automatically, control air and gas flow, thereby motor is moved always under suitable air fuel ratio situation.
The high hydrogen gas engine of the large cylinder diameter of internal-mixing of the present invention, accomplished fully isolated outside cylinder of combustion gas and air, thoroughly avoided the danger of combustion gas tempering, be applicable to the higher flammable explosive gas of hydrogeneous tolerance such as biological substance for combustion gas, coke-stove gas, producer gas, blue charcoal gas, system architecture is simple, cost is low, and rate of fault is few, is convenient to safeguard.
Claims (8)
1. the high hydrogen gas engine of the large cylinder diameter of internal-mixing, comprise engine cylinder cap (11), it is characterized in that, engine cylinder cap and gas handling system are joined, gas handling system comprises suction tude inner tube (2) and suction tude outer tube (1), suction tude inner tube (2) is located at suction tude outer tube (1) inside, air inlet arm (3) and gas inlet arm (4) are located at respectively suction tude inner tube (2) and suction tude outer tube (1) homonymy side by side, air inlet arm (3) communicates with suction tude inner tube (2), gas inlet arm (4) communicates with suction tude outer tube (1), auxiliary fuel supply-system comprises controller, mixer inner tube (7), mixer outer tube (8), mixer inner tube (7) one ends are provided with air electric control valve (10), mixer outer tube (8) one ends are provided with combustion gas electric control valve (9), air electric control valve (10) is connected with controller with combustion gas electric control valve (9), auxiliary fuel supply-system and gas handling system are joined.
2. the high hydrogen gas engine of the large cylinder diameter of internal-mixing according to claim 1, it is characterized in that, described engine cylinder cap (11) is Four-valve cylinder head, two intake valves (12) and two exhaust valves (13) are arranged on engine cylinder cap (11), two intake valves (12) independently intake duct of ining succession separately, two exhaust valves (13) first independent rear disjunctor share an air outlet flue, and intake duct and air outlet flue are located at respectively the cylinder head both sides.
3. the high hydrogen gas engine of the large cylinder diameter of internal-mixing according to claim 2, is characterized in that, two intake ducts of described engine cylinder cap dock with air inlet arm (3) and gas inlet arm (4) respectively.
4. the high hydrogen gas engine of the large cylinder diameter of internal-mixing according to claim 1, is characterized in that, described mixer inner tube (7) is docked with suction tude inner tube (2), and mixer outer tube (8) docks with suction tude outer tube (1).
5. according to claim 1, the high hydrogen gas engine of the large cylinder diameter of 2 or 4 described internal-mixing, it is characterized in that, described controller is the PLC controller.
6. the high hydrogen gas engine of the large cylinder diameter of internal-mixing according to claim 1, is characterized in that, described gas handling system adopts suction tude adpting flange (5) to be connected with mixer adpting flange (6) with auxiliary fuel supply-system.
7. the high hydrogen gas engine of the large cylinder diameter of internal-mixing according to claim 1, is characterized in that, described air electric control valve (10) and combustion gas electric control valve (9) all adopt electric butterfly valve.
8. the high hydrogen gas engine of the large cylinder diameter of internal-mixing according to claim 1, is characterized in that, described engine cylinder cap (11) is provided with temperature transducer, and temperature transducer is connected with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104199344A CN103452651A (en) | 2013-09-16 | 2013-09-16 | Inside-mixing large-bore high-hydrogen-content gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104199344A CN103452651A (en) | 2013-09-16 | 2013-09-16 | Inside-mixing large-bore high-hydrogen-content gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103452651A true CN103452651A (en) | 2013-12-18 |
Family
ID=49735419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104199344A Pending CN103452651A (en) | 2013-09-16 | 2013-09-16 | Inside-mixing large-bore high-hydrogen-content gas engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103452651A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967660A (en) * | 2014-05-26 | 2014-08-06 | 淄博淄柴新能源有限公司 | Engine air feeding system for coke oven gas generator set |
| CN110312859A (en) * | 2017-01-23 | 2019-10-08 | 艾尼科燃料技术有限公司 | The processing unit of dangerous substance |
| CN112901336A (en) * | 2021-02-22 | 2021-06-04 | 中节能宁夏新能源股份有限公司 | Hydrogen-containing industrial tail gas generator set |
| CN113638824A (en) * | 2021-08-27 | 2021-11-12 | 河南柴油机重工有限责任公司 | Gas inlet method and device for gas fuel internal combustion engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2308865A (en) * | 1996-01-02 | 1997-07-09 | Cummins Engine Co Inc | Gas/air mixer for injecting fuel gas into the intake air stream of an i.c. engine |
| US20020195088A1 (en) * | 2000-06-07 | 2002-12-26 | Radu Oprea | Dual fuel metering and supply system for internal combustion engines |
| CN2705617Y (en) * | 2004-02-24 | 2005-06-22 | 广州市宇联机电有限公司 | Low heat value gas fuel mixer for IC engine |
| CN202215395U (en) * | 2011-05-16 | 2012-05-09 | 胜利油田胜利动力机械集团有限公司 | Gas engine combustion gas supply device |
| KR101174865B1 (en) * | 2011-02-14 | 2012-08-17 | (유)성문 | Gas pipe for ship and manufacturing method of the same |
| CN203584570U (en) * | 2013-09-16 | 2014-05-07 | 淄博淄柴新能源有限公司 | Internal-mixing large-cylinder diameter high-hydrogen gas engine |
-
2013
- 2013-09-16 CN CN2013104199344A patent/CN103452651A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2308865A (en) * | 1996-01-02 | 1997-07-09 | Cummins Engine Co Inc | Gas/air mixer for injecting fuel gas into the intake air stream of an i.c. engine |
| US20020195088A1 (en) * | 2000-06-07 | 2002-12-26 | Radu Oprea | Dual fuel metering and supply system for internal combustion engines |
| CN2705617Y (en) * | 2004-02-24 | 2005-06-22 | 广州市宇联机电有限公司 | Low heat value gas fuel mixer for IC engine |
| KR101174865B1 (en) * | 2011-02-14 | 2012-08-17 | (유)성문 | Gas pipe for ship and manufacturing method of the same |
| CN202215395U (en) * | 2011-05-16 | 2012-05-09 | 胜利油田胜利动力机械集团有限公司 | Gas engine combustion gas supply device |
| CN203584570U (en) * | 2013-09-16 | 2014-05-07 | 淄博淄柴新能源有限公司 | Internal-mixing large-cylinder diameter high-hydrogen gas engine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967660A (en) * | 2014-05-26 | 2014-08-06 | 淄博淄柴新能源有限公司 | Engine air feeding system for coke oven gas generator set |
| CN110312859A (en) * | 2017-01-23 | 2019-10-08 | 艾尼科燃料技术有限公司 | The processing unit of dangerous substance |
| CN110312859B (en) * | 2017-01-23 | 2021-09-17 | 艾尼科燃料技术有限公司 | Hazardous substance treatment unit |
| CN112901336A (en) * | 2021-02-22 | 2021-06-04 | 中节能宁夏新能源股份有限公司 | Hydrogen-containing industrial tail gas generator set |
| CN113638824A (en) * | 2021-08-27 | 2021-11-12 | 河南柴油机重工有限责任公司 | Gas inlet method and device for gas fuel internal combustion engine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101832861B (en) | Submarine environment condition simulating device for diesel engine | |
| CN103452651A (en) | Inside-mixing large-bore high-hydrogen-content gas engine | |
| CN103092112A (en) | Multi-functional electronic control air inlet system of constant-volume napalm bomb | |
| CN101683599B (en) | High-precision gas mixing system and method | |
| CN102721060A (en) | Energy-efficient ceramic kiln burner | |
| CN201714522U (en) | Multistage parallel-connection type Venturi pipe air inlet system for diesel engine | |
| CN203584570U (en) | Internal-mixing large-cylinder diameter high-hydrogen gas engine | |
| CN201680375U (en) | Gas stove burner | |
| CN103307600A (en) | Heat accumulative gas burner | |
| CN105156235A (en) | Explosion-proof electrically controlled EGR system for mine | |
| CN213656735U (en) | Boiler burner | |
| CN206740390U (en) | Bullet system is held in one kind visualization | |
| CN201454431U (en) | High-precision gas mixing device | |
| CN212296657U (en) | Leading hybrid system of low concentration gas | |
| CN210171659U (en) | Smoke mixing and explosion-proof device of direct-blowing medium-speed coal mill | |
| CN103967660A (en) | Engine air feeding system for coke oven gas generator set | |
| CN203642160U (en) | Steam boiler for burning herb residues | |
| CN203009103U (en) | Exhaust gas distributing mechanism for exhaust gas recirculation system of diesel engine | |
| CN103438456B (en) | Biomass gas burner | |
| CN203605689U (en) | Rotary kiln for firing of porcelain glazes | |
| CN203249242U (en) | Pre-mixing type pressure adjusting secondary fuel gas burner | |
| CN108302525B (en) | Flow area adjustable direct-current pulverized coal burner | |
| CN104179610B (en) | Low caloric power gas engine air inlet method and device | |
| CN207035201U (en) | Blowing system and fuel combination boiler | |
| CN203847293U (en) | Engine air intake system for coke oven gas generator set |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20131218 |