CN201437533U - Pressure regulating device for coking chamber of coke oven - Google Patents
Pressure regulating device for coking chamber of coke oven Download PDFInfo
- Publication number
- CN201437533U CN201437533U CN2009200873074U CN200920087307U CN201437533U CN 201437533 U CN201437533 U CN 201437533U CN 2009200873074 U CN2009200873074 U CN 2009200873074U CN 200920087307 U CN200920087307 U CN 200920087307U CN 201437533 U CN201437533 U CN 201437533U
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Abstract
The utility model provides a pressure regulating device for the coking chamber of a coke oven, which comprises a bridge pipe connected with a raw coke oven gas ascending pipe. A water filling pipe and an ammonia water spray nozzle are arranged on the bridge pipe. The lower part of the bridge pipe is connected with a tooth crown pipe. The tooth crown pipe is suspended in a fixed cup water container. A spherical plug pressure regulating valve is installed in the tooth crown pipe and the fixed cup water container. The spherical plug of the spherical plug pressure regulating valve is aligned with a tapered hole at the lower part of the fixed cup water container. The tooth crown pipe, the fixed cup water container, the spherical plug pressure regulating valve are installed in a gas header. The piston screw rod of the spherical plug pressure regulating valve is connected with a control cylinder through an actuating mechanism. The utility model has the advantages that the internal pressure of the single-hole coking chamber is effectively controlled, the control of different required coking periods and different required technological parameters is realized through the adjustment of the liquid level of the ammonia water in the fixed cup water container, the times of hazardous gases diffused to the atmosphere are greatly reduced, the coal gas recovery rate is improved to more than 90 percent.
Description
Technical field
The utility model relates to a kind of coke furnace carbonization chamber barometric control unit, belongs in the coking by coke oven technology, and the indoor positive and negative pressure of single hole carbonization is played the device of fine setting effect, particularly a kind of novel energy-conserving emission reduction environmental protecting device of collecting raw gas.
Background technology
Coke oven collecting main is used for collecting the raw gas that all coking chamber inside are produced after because of coal combustion, effuser is connected with the coking chamber upcast by bridge tube, upcast pipe internal pressure then is very important coke making process parameter, and its pressure size is determined by the inner current true pressure of each coking chamber of coke oven.The stable quality that is directly connected to the charge of coke product of upcast pressure affects the Air quality in the coke oven sky simultaneously.In case the coke furnace carbonization chamber internal pressure is excessive, will wash coking chamber upcast pipe lid open, and directly efflux the raw gas that is produced by coking chamber internal combustion coal, and this raw gas contains a large amount of harmful compositions (as H to atmosphere
2S), it is not only endangering the healthy of workers at their posts, is polluting the atmospheric environment of coke oven periphery simultaneously.The Regulation of Coke Oven Collecting Mains mode was an extensive style in the past, and its effect is poor, and the coal-gas recovering rate is very low, and obnoxious flavour is discharged in the atmosphere serious environment pollution in a large number.
Summary of the invention
The purpose of this utility model is at above-mentioned present situation, aim to provide a kind of coke furnace carbonization chamber barometric control unit, can control coking chamber air pressure effectively, and realize different coking period, satisfy the requirement of coke making process to air pressure, reduce obnoxious flavour significantly to the number of times that atmosphere diffuses, improved the rate of recovery of coal gas.
The technical solution of the utility model: coke furnace carbonization chamber barometric control unit of the present utility model, comprise the bridge tube that is connected with raw coke over gas riser, it is characterized in that: water injection pipe and ammoniacal liquor shower nozzle are arranged on the bridge tube, bridge tube bottom and slot imperial crown pipe coupling, slot imperial crown pipe is suspended in the fixed cup water receptacle, sphere plug relief valve is installed in slot imperial crown pipe and the fixed cup water receptacle, the tapered hole of the sphere plug secured in alignment cup water receptacle bottom of sphere plug relief valve; Slot imperial crown pipe, fixed cup water receptacle, sphere plug relief valve are installed in the effuser, and the piston screw of sphere plug relief valve is connected with the control cylinder by topworks.
Described coke furnace carbonization chamber barometric control unit, sphere plug relief valve comprises piston barrel, inner carrier, piston screw, goes up tongued and grooved flanges, inner carrier is the hollow cartridge type, the outside, inner carrier bottom connects the sphere plug, there is overflow cylinder in the piston barrel outside, the upper end of overflow cylinder and last tongued and grooved flanges are tightly connected, and the lower end of overflow cylinder is an opening, and the overflow weir that leads to overflow cylinder is arranged at piston barrel 1 top.
Described coke furnace carbonization chamber barometric control unit, slot imperial crown pipe comprises cylindrical portions may, the joint flange of cylinder upper end, slot tube part is arranged at the cylinder bottom, on the slot tube part many slots is arranged.
Uniform 24 slots on the described slot tube, slot is up-narrow and down-wide, and going up narrow part slot is 6mm, and following wide part slot is 12mm, and whole slot length H is 200mm.
Described fixed cup water receptacle comprises drum, and the drum bottom is the awl bucket, and awl bucket end opening is the tapering flange port.
Advantage of the present utility model: the utility model in actual applications, can control effectively, and realize different coking period, the coke making process requirement has been satisfied in the adjusting of the corresponding ammoniacal liquor liquid level height of design pressure in the single hole coking chamber, reduces the number of times that obnoxious flavour diffuses to atmosphere significantly, improved the rate of recovery of coal gas, the rate of recovery reaches more than 90%, is genuine energy-saving and emission-reduction, the novel environment friendly product.
Description of drawings
Fig. 1 is a structural principle synoptic diagram of the present utility model.
Fig. 2 is the utility model partial enlarged drawing.
Fig. 3 is that the excessive controlled atmosphere of sphere plug is pressed the valve arrangement synoptic diagram.
Fig. 4 is a slot imperial crown tubular construction synoptic diagram.
Fig. 5 fixed cup water container structure synoptic diagram.
Fig. 6 is the A place enlarged view of Fig. 5.
Fig. 7 is the coke pushing working state schematic representation.
Fig. 8 is the process working state schematic representation of coalingging.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1, Fig. 2: coke furnace carbonization chamber barometric control unit of the present utility model comprises the bridge tube 1 that is connected with raw coke over gas riser 10, water injection pipe 5 and spray ammonia pipe 7 are arranged on the bridge tube 1, bridge tube 1 bottom is connected with slot imperial crown pipe 2, slot imperial crown pipe 2 is suspended in the fixed cup water receptacle 3, sphere plug relief valve 4 is installed in slot imperial crown pipe 2 and the fixed cup water receptacle 3, the tapered hole 3a of sphere plug 4e secured in alignment cup water receptacle 3 bottoms of sphere plug relief valve 4; Slot imperial crown pipe 2, fixed cup water receptacle 3, sphere plug relief valve 4 are installed in the effuser 9, and effuser 9 is a jar shape pipeline, are the pipelines of collecting gas.
The piston screw 4c of sphere plug relief valve 4 is connected with control cylinder 6 by topworks 8.10a is a upcast pipe lid.
As Fig. 3: sphere plug relief valve 4 comprises piston barrel 4a, inner carrier 4b, piston screw 4c, goes up tongued and grooved flanges 4d, inner carrier 4b is the hollow cartridge type, the outside, inner carrier 4b bottom connects sphere plug 4e, there is overflow cylinder 4f in the piston barrel 4a outside, the upper end of overflow cylinder 4f and last tongued and grooved flanges 4d are tightly connected, the lower end of overflow cylinder 4f is opening 4f1, and the overflow weir 4a1 that leads to overflow cylinder 4f is arranged at piston barrel 1 top.
As Fig. 4: slot imperial crown pipe comprises cylinder 2a, the joint flange 2b of cylinder 2a upper end, and slot tube part 2c is arranged at cylinder 2a bottom, on the slot tube part 2c many slot 2d is arranged.
As Fig. 5, Fig. 6: the fixed cup water receptacle comprises drum 3a, and drum 3a bottom is awl bucket 3b, and awl bucket 3b end opening is tapering flange port 3c.Cover for the fixed cup ammonia container being fixed on the indoor effuser of carbonization, the spy welds the pull bar 3f that one uniform of 3 φ 16mm have M16 at the cylindrical of the cylinder 3a of fixed cup ammonia container.Its pull bar 3f length overall is 1000mm, and length of thread is 200mm.In order to increase the intensity of pull bar, when welding rod, increased a technology shin plate 3g for each pull bar.
The endoporus top of tapering flange 3c is the conical surface 3d that is complementary with conical hopper 3b cone angle.
The system works schematic diagram:
Fig. 7 is a coke pushing working state schematic representation coke-pushing process:
When the coke maturation, when needing coke pushing at once, open upcast pipe lid 10a, open water injection pipe 5 fast valve and the ammoniacal liquor nozzles 7 annotated, simultaneously control cylinder 6 starts, and the overflow piston screw 4c of gas relief valve 4 of sphere plug is extended limit position downwards, and sphere plug 4e closes fixed cup water receptacle rim of a cup 3a.
Beginning, the ammonia vol of two ammoniacal liquor shower nozzles ejection make the liquid level in the fixed cup water receptacle arrive liquid level a, but can not arrive liquid level b, and bridge tube 1 and effuser 9 are by communicating on the slot of imperial crown pipe 2, the liquid level face in the fixed cup water receptacle.
But, require coking chamber and effuser isolated in the coke-pushing process, at this moment, water and a large amount of ammoniacal liquor pour in the fixed cup water receptacle 3, make the liquid level 12 in the fixed cup water receptacle reach c rapidly, each bar passage all blocked that the bridge tube of coke pushing stove and effuser are isolated fully.Raw gas 11 in the upcast 10 links to each other with atmosphere by upcast lid 10a, and this moment, bridge tube pressure was near 0.
Fig. 8 is the process working state schematic representation of coalingging:
When having pushed away Jiao need coaling the time, close the pipe lid 10a of upcast 10, close the quick water injection valve of water injection pipe 5, control cylinder 6 shrinks simultaneously, the piston screw that topworks 8 drives the excessive gas relief valve 4 of sphere plug rises, and with whole sphere plug 4e pull-up, sphere plug 4e reaches the extreme higher position by inner carrier.The ammoniacal liquor 12 of two ammoniacal liquor shower nozzle 7 ejections flow into effuser 9 rapidly, does not form any liquid level in the fixed cup water receptacle, and bridge tube 1 reaches maximum with the communication passage of effuser 9, and the pressure of bridge tube is reduced to-250 to-300 handkerchiefs (with the collecting main pressure fluctuation) simultaneously.When coalingging, coal ash and raw gas 11 are sucked effuser 9 by the negative pressure in the bridge tube, imitate and reduce amount of dust, improve environment.In the process of coalingging, bridge tube pressure fluctuates between malleation and negative pressure.The 13rd, air-flow.
Adorned coal, after building bell, the descending 140mm stroke that at first reaches of cylinder control piston screw rod, 4e falls extreme lower position with the sphere plug, with the rim of a cup 3a of fixed cup water receptacle stifled on, piston screw continues descending then, inner carrier is fallen, final cylinder piston screw stroke reaches 400mm, and inner carrier is fallen extreme lower position, and the sphere plug is pushed against.Just begun the coking process this moment.
Coking process such as Fig. 1, Fig. 2 (normal operating conditions):
Adorned coal, sphere plug and inner carrier all reach extreme lower position, have just begun the coking process this moment.The ammoniacal liquor of two ammoniacal liquor shower nozzle ejections begins to form liquid level in fixed cup water receptacle 3, adjusts inner carrier according to the given pressure (80Pa) of program realization and moves up and down.When liquid level is low, as be lower than liquid level a, this moment 1., 2. two kinds of passages all are in connected state, can be in a bigger negative pressure in the bridge tube short period of time (under the normal circumstances about 1-3 minute).Sprinkling along with ammoniacal liquor, liquid level in the fixed cup water receptacle 3 constantly rises, when reaching liquid level d, ammoniacal liquor flow in the effuser 9 by 1. passage, the action effect that inner carrier is regulated just begins to embody, time variable control this moment cylinder shrinks, upwards spur inner carrier 4b, the overflow weir 4a1 that piston barrel 1 top is led to overflow cylinder 4f seals, and liquid level continues to rise, and imperial crown pipe 2 lower edges and slot are slowly flooded by the ammoniacal liquor liquid level, raw gas passage between bridge tube 1 and the effuser 9 slowly tails off, bridge tube is diminished by the influence of effuser negative pressure, and the pressure in the bridge tube changes malleation into by negative pressure, up to setting pressure.
Along with coking time prolongs, the raw gas generating capacity reduces gradually, and the coking chamber setting pressure raises gradually, inner carrier rises, and the valve position value also increases, and arrives near 64% up to coking valve position in latter stage value, at this moment liquid level reaches the c position, has sealed the passage of raw gas basically, prepares coke pushing.
It is pointed out that in the process of whole coking the inner all the time piston of bridge tube pressure moves up and down the adjusting liquid level and controls coking chamber pressure, different steps in the process of coking, setting pressure difference.
Setting pressure transmitter in the coking chamber upcast 10, detected pressure signal is real-time transmitted to Controlling System, sequence of control compares this actual measured value and current pressure set points, and calculates the output that produces by this program and at first make sphere plug of the present utility model reach corresponding position (open fixedly rim of a cup or close fixedly rim of a cup) fast.When sphere plug of the present utility model keeps closing fixedly the rim of a cup state, the then lifting by piston screw, the control inner carrier is to the covering degree of the overflow weir 4a1 on the piston barrel 4a, with the ammoniacal liquor liquid level of regulating in the fixed cup water receptacle, regulate the size of the slot outlet on the imperial crown pipe, control the pressure in the single hole coking chamber.The liter of piston screw, ammoniacal liquor liquid level rise, and it is big more that raw gas is derived suffered resistance, and malleation is high more in the single hole coking chamber; Otherwise then malleation is low more in the single hole coking chamber, and finally is in corresponding pressure-fired in the single hole coking chamber according to regulating the period of current coking.Wherein the main realization water level that moves up and down of sphere plug is just regulated, and its function class is similar to butterfly valve.
The sphere plug always is in the coking process and during coke pushing fixing rim of a cup is clogged, only just mentions in the process of coalingging.
In the coking process, the overflow weir 4a1 on the piston barrel 4a also plays the overflow effect, and when liquid level was higher than overflow weir 4a1, ammoniacal liquor can flow directly into effuser 9 via piston barrel 4a by overflow weir 4a1.The cylinder stroke is 400mm-140mm.The up-narrow and down-wide slot of slot imperial crown pipe has adapted to the pressure requirement that the coking different steps is set better.
Claims (5)
1. coke furnace carbonization chamber barometric control unit, comprise the bridge tube (1) that is connected with raw coke over gas riser, it is characterized in that: water injection pipe (5) and ammoniacal liquor shower nozzle (7) are arranged on the bridge tube (1), bridge tube (1) bottom is connected with slot imperial crown pipe (2), slot imperial crown pipe (2) is suspended in the fixed cup water receptacle (3), fixed cup water receptacle (3) is fixed on the effuser (9), sphere plug relief valve (4) is installed in slot imperial crown pipe (2) and the fixed cup water receptacle (3), the tapered hole (3a) of sphere plug (4e) secured in alignment cup water receptacle (3) bottom of sphere plug relief valve (4); Slot imperial crown pipe (2), fixed cup water receptacle (3), sphere plug relief valve (4) are installed in the effuser (9), and the piston screw (4c) of sphere plug relief valve (4) is connected with control cylinder (6) by topworks (8).
2. coke furnace carbonization chamber barometric control unit according to claim 1, it is characterized in that: sphere plug relief valve (4) comprises piston barrel (4a), inner carrier (4b), piston screw (4c), goes up tongued and grooved flanges (4d), inner carrier (4b) is the hollow cartridge type, the outside, inner carrier (4b) bottom connects sphere plug (4e), there is overflow cylinder (4f) in piston barrel (4a) outside, the upper end of overflow cylinder (4f) and last tongued and grooved flanges (4d) are tightly connected, the lower end of overflow cylinder (4f) is out (4f1), and the overflow weir (4a1) that leads to overflow cylinder (4f) is arranged at piston barrel (1) top.
3. coke furnace carbonization chamber barometric control unit according to claim 1 and 2, it is characterized in that: slot imperial crown pipe comprises cylindrical portions may (2a), the joint flange (2b) of cylinder (2a) upper end, slot tube part (2c) is arranged at cylinder (2a) bottom, on the slot tube part (2c) many slots (2d) is arranged.
4. coke furnace carbonization chamber barometric control unit according to claim 3 slot imperial crown pipe, it is characterized in that: slot tube (2c) is gone up uniform 24 slots (2d), and (2d) is up-narrow and down-wide for slot, and going up narrow part slot is 6mm, wide part slot is 12mm down, and whole slot length H is 200mm.
5. coke furnace carbonization chamber barometric control unit according to claim 1 and 2 is characterized in that: the fixed cup water receptacle comprises drum (3a), and drum (3a) bottom is an awl bucket (3b), and awl bucket (3b) end opening is tapering flange port (3c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200873074U CN201437533U (en) | 2009-07-14 | 2009-07-14 | Pressure regulating device for coking chamber of coke oven |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200873074U CN201437533U (en) | 2009-07-14 | 2009-07-14 | Pressure regulating device for coking chamber of coke oven |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201437533U true CN201437533U (en) | 2010-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200873074U Expired - Fee Related CN201437533U (en) | 2009-07-14 | 2009-07-14 | Pressure regulating device for coking chamber of coke oven |
Country Status (1)
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| CN (1) | CN201437533U (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101962556A (en) * | 2010-10-21 | 2011-02-02 | 武汉钢铁(集团)公司 | Gas circuit integrated control box of coke oven carbonization chamber pressure control system |
| CN102010726A (en) * | 2010-12-15 | 2011-04-13 | 山西太钢不锈钢股份有限公司 | Cleaning method for pressure regulating device of single-hole carbonization chamber of coke oven |
| CN103097492A (en) * | 2010-08-23 | 2013-05-08 | 蒂森克虏伯伍德公司 | Device and method for regulating the chamber pressure of coking chambers of a coke-oven battery using adjustable diaphragms at the ascending pipe elbow openings into the raw gas receivers |
| CN104884577A (en) * | 2012-12-28 | 2015-09-02 | 太阳焦炭科技和发展有限责任公司 | Exhaust flow modifier, duct intersection incorporating the same, and methods therefor |
| CN106147803A (en) * | 2016-08-11 | 2016-11-23 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven coking chamber pressure adjusting means and control method |
| CN107739623A (en) * | 2017-09-06 | 2018-02-27 | 大连亨利测控仪表工程有限公司 | A kind of new gooseneck metallurgy coking gas controller |
| CN108504370A (en) * | 2018-05-31 | 2018-09-07 | 武汉钢铁有限公司 | Coke furnace carbonization chamber smoke treatment system based on the recycling of coal gas sub-prime |
| CN109837101A (en) * | 2019-04-10 | 2019-06-04 | 武汉铂睿工程技术有限公司 | Single carbonization chamber adjusts gas collecting tube external mechanical water seal regulating device |
| CN110713841A (en) * | 2019-10-21 | 2020-01-21 | 马鞍山钢铁股份有限公司 | Method for repairing failure of PROven system of coke oven |
| CN112480942A (en) * | 2020-11-24 | 2021-03-12 | 武汉睿翔天泽工程技术有限公司 | Sealing piston water seal device and system of single carbonization chamber pressure control system |
| CN112500870A (en) * | 2020-11-24 | 2021-03-16 | 武汉睿翔天泽工程技术有限公司 | Piston position display device and pressure adjusting system of carbonization chamber |
| CN113293020A (en) * | 2021-05-25 | 2021-08-24 | 南京沪友冶金机械制造有限公司 | Self-adjusting raw coke oven gas device for single carbonization chamber coke oven |
| CN115433594A (en) * | 2022-09-28 | 2022-12-06 | 张双兴 | Pressure adjusting method and device |
| RU2810103C1 (en) * | 2023-03-10 | 2023-12-21 | Акционерное общество "Восточный научно-исследовательский углехимический институт" (АО "ВУХИН") | Device for removing coke gas from coke oven |
-
2009
- 2009-07-14 CN CN2009200873074U patent/CN201437533U/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103097492A (en) * | 2010-08-23 | 2013-05-08 | 蒂森克虏伯伍德公司 | Device and method for regulating the chamber pressure of coking chambers of a coke-oven battery using adjustable diaphragms at the ascending pipe elbow openings into the raw gas receivers |
| CN103097492B (en) * | 2010-08-23 | 2015-02-18 | 蒂森克虏伯伍德公司 | Device and method for regulating the chamber pressure of coking chambers of a coke-oven battery using adjustable diaphragms at the ascending pipe elbow openings into the raw gas receivers |
| CN101962556A (en) * | 2010-10-21 | 2011-02-02 | 武汉钢铁(集团)公司 | Gas circuit integrated control box of coke oven carbonization chamber pressure control system |
| CN101962556B (en) * | 2010-10-21 | 2013-02-27 | 武汉钢铁(集团)公司 | Gas circuit integrated control box of coke oven carbonization chamber pressure control system |
| CN102010726A (en) * | 2010-12-15 | 2011-04-13 | 山西太钢不锈钢股份有限公司 | Cleaning method for pressure regulating device of single-hole carbonization chamber of coke oven |
| CN102010726B (en) * | 2010-12-15 | 2013-05-22 | 山西太钢不锈钢股份有限公司 | Cleaning method for pressure regulating device of single-hole carbonization chamber of coke oven |
| CN104884577B (en) * | 2012-12-28 | 2019-03-05 | 太阳焦炭科技和发展有限责任公司 | It is vented flow conditioner and pipeline monitor device and correlation technique with the adjuster |
| CN104884577A (en) * | 2012-12-28 | 2015-09-02 | 太阳焦炭科技和发展有限责任公司 | Exhaust flow modifier, duct intersection incorporating the same, and methods therefor |
| CN106147803A (en) * | 2016-08-11 | 2016-11-23 | 中冶焦耐(大连)工程技术有限公司 | A kind of coke oven coking chamber pressure adjusting means and control method |
| CN106147803B (en) * | 2016-08-11 | 2021-11-19 | 中冶焦耐(大连)工程技术有限公司 | Pressure adjusting device and method for coking chamber of coke oven |
| CN107739623A (en) * | 2017-09-06 | 2018-02-27 | 大连亨利测控仪表工程有限公司 | A kind of new gooseneck metallurgy coking gas controller |
| CN108504370B (en) * | 2018-05-31 | 2020-04-07 | 武汉钢铁有限公司 | Coke oven carbonization chamber smoke and dust treatment system based on coal gas quality-divided recovery |
| CN108504370A (en) * | 2018-05-31 | 2018-09-07 | 武汉钢铁有限公司 | Coke furnace carbonization chamber smoke treatment system based on the recycling of coal gas sub-prime |
| CN109837101A (en) * | 2019-04-10 | 2019-06-04 | 武汉铂睿工程技术有限公司 | Single carbonization chamber adjusts gas collecting tube external mechanical water seal regulating device |
| CN110713841A (en) * | 2019-10-21 | 2020-01-21 | 马鞍山钢铁股份有限公司 | Method for repairing failure of PROven system of coke oven |
| CN112480942A (en) * | 2020-11-24 | 2021-03-12 | 武汉睿翔天泽工程技术有限公司 | Sealing piston water seal device and system of single carbonization chamber pressure control system |
| CN112500870A (en) * | 2020-11-24 | 2021-03-16 | 武汉睿翔天泽工程技术有限公司 | Piston position display device and pressure adjusting system of carbonization chamber |
| CN113293020A (en) * | 2021-05-25 | 2021-08-24 | 南京沪友冶金机械制造有限公司 | Self-adjusting raw coke oven gas device for single carbonization chamber coke oven |
| CN115433594A (en) * | 2022-09-28 | 2022-12-06 | 张双兴 | Pressure adjusting method and device |
| CN115433594B (en) * | 2022-09-28 | 2023-12-05 | 张双兴 | Pressure adjusting method and device |
| RU2810103C1 (en) * | 2023-03-10 | 2023-12-21 | Акционерное общество "Восточный научно-исследовательский углехимический институт" (АО "ВУХИН") | Device for removing coke gas from coke oven |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhan Steel Engineering Technology Group Communication Co., Ltd. Assignor: Wuhan Iron & Steel (Group) Corp. Contract record no.: 2011420000060 Denomination of utility model: Pressure regulating device for coking chamber of coke oven Granted publication date: 20100414 License type: Exclusive License Record date: 20110427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100414 Termination date: 20170714 |