CN208155083U - Coke oven chimney is unpowered hot-backup system - Google Patents
Coke oven chimney is unpowered hot-backup system Download PDFInfo
- Publication number
- CN208155083U CN208155083U CN201820466613.8U CN201820466613U CN208155083U CN 208155083 U CN208155083 U CN 208155083U CN 201820466613 U CN201820466613 U CN 201820466613U CN 208155083 U CN208155083 U CN 208155083U
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- chimney
- coke oven
- steam pipe
- air inlet
- inlet pipe
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Abstract
The utility model provides a kind of unpowered hot-backup system of coke oven chimney, including coke oven and chimney, flue is equipped between the root of the chimney and the coke oven, what the side wall of the root of the chimney tilted down is equipped with air inlet pipe, the entrance of the air inlet pipe is communicated with the atmosphere, air in the air inlet pipe can be heated by a steam pipe, be in hot standby state under the action of the air of the chimney after the heating, and the arrival end of the steam pipe is connected with steam pipe network.The utility model can guarantee that coke oven chimney is in hot standby state always, and structure is simplified, at low cost.
Description
Technical field
The utility model relates to coking production technical field, specifically a kind of unpowered hot-backup system of coke oven chimney.
Background technique
With the development of national economy and the increasingly raising of living standards of the people, it is more and more that environmental problem obtains people
Pay attention to, and as the pollutant closely related with air quality, SO2And NOxIt is constantly subjected to paying close attention to for country.In black gold
Belong to and smelt and roll in processing industry, coke oven process can discharge a large amount of SO2And NOx, it is one of emission reduction emphasis.To reach country
It provides emission limit, desulphurization denitration mechanism is usually set, however, because the reasons such as technology and equipment, existing desulphurization denitration machine
The utilization rate of equipment and installations of structure is difficult to reach 100% (being unable to satisfy coke oven whole year without the production requirement stopped), and the original flue gas of coke oven
System is unpowered systems, i.e., entire flue gas system leans on the hot self-suction of coke oven chimney to realize smoke evacuation completely, so in order to ensure
Coke oven safety in production, coke oven chimney must assure that constantly in hot standby state.In the prior art, in order to ensure coke oven chimney begin
It is in hot standby state eventually, desulphurization denitration mechanism can additionally take measures (such as additional hot standby equipment is arranged), ensure coke oven cigarette
The hot standby state of chimney, wastes many energy and power.
Application No. is the Chinese utility model patents of 201520394546.X to disclose a kind of coke oven flue gas hot-backup system,
Including coke oven, chimney, SCR denitration device, waste heat boiler, heat exchanger and desulfurizing tower, and air is sent into using air blower and is exchanged heat
Device and coke oven flue gas exchange heat, and the air after being then heated is sent into chimney, to keep the hot standby state of chimney.But the technology
The blower and air line for needing to be arranged flue gas/air heat exchanger, conveying air, not only need purchase of equipment of injecting capital into, also
Need to put into electric energy, thermal energy to maintain equipment to run, and heat exchanger increases resistance to flue gas purification system, and reduces waste heat
Boiler duty, once and equipment investment operate, because of the capacity of equipment upper limit, so that hot standby ability can not become with ambient air temperature
Change and adjusts；In general, the technology is in order to realize that chimney is hot standby, and investment and operating cost are higher, and in desulphurization denitration
During mechanism maintenance etc. is stopped transport, chimney is in non-hot standby state, can not discharge fume because hot self-suction is insufficient.
It is disclosed application No. is 201610295380.5 Chinese invention patent application and utilizes the hot standby coke oven chimney of coke oven flue gas
Desulfurization denitration method and device, while application No. is 201620479180.0 Chinese utility model patents to disclose a kind of be applicable in
In the coke oven chimney hot-backup system of smoke-gas wet desulfurization denitrating technique, the two disclose using coke oven flue gas to coke oven chimney into
The hot standby method of row, and wet type flue gas desulphurization equipment, blower, flue gas heat-exchange unit are directed in the two etc., because wet flue gas is net
Changing equipment can make smoke temperature drastically reduce, and the two is heated wet using into the high-temperature flue gas before wet type flue gas desulphurization equipment
It is hot standby to be sent into chimney progress by the purifying smoke after method cleaning equipment for the purifying smoke being heated.But use high/low temperature flue gas
Heat exchange require using gas-gas heat exchanger (i.e. Gas-gas Heater, abbreviation GGH), and GGH electric power wet process of FGD (i.e.
Flue Gas Desulfurization, abbreviation FGD) industry it is extensive remove the easy blocking for being proved the equipment, gas leakage,
The disadvantages of high failure rate, and purified flue gas still contains steam, SO3、SO2, the substances such as salt, flue gas uplink in chimney
It can cool down in the process (especially ambient air temperature lower winter), acid mist is had after cooling and generates corrosion chimney, moreover, guaranteeing cigarette
The hot standby heat of chimney is practical smaller, hot standby using the progress of whole flue gases, wastes amount of heat, and needs to put into very long cigarette
Road, blower are also required to overcome many additional resistances；In general, the technology is to realize chimney hot standby investment and operation,
Cost price is excessively high, and during wet type flue gas desulphurization overhaul of the equipments etc. is stopped transport, chimney is in non-hot standby state, certainly because of heat
Suction is insufficient and can not discharge fume.
Utility model content
The purpose of the utility model is to provide a kind of unpowered hot-backup systems of coke oven chimney, can guarantee coke oven chimney always
In hot standby state, structure is simplified, at low cost.
Following technical proposal can be used to realize in the above-mentioned purpose of the utility model：
The utility model provides a kind of unpowered hot-backup system of coke oven chimney, wherein the coke oven chimney Unpowered thermal is standby
System includes coke oven and chimney, and flue, the side wall of the root of the chimney are equipped between the root of the chimney and the coke oven
What is tilted down is equipped with air inlet pipe, and the entrance of the air inlet pipe is communicated with the atmosphere, and the air in the air inlet pipe can be steamed by one
Steam pipe heats, and is in hot standby state, the arrival end and steam pipe of the steam pipe under the action of the air of the chimney after the heating
Net is connected.
In a preferred embodiment, the middle spiral of the steam pipe is wound in the outer wall of the air inlet pipe.
In a preferred embodiment, what the middle part of the steam pipe was back and forth wriggled is set in the air inlet pipe.
In a preferred embodiment, it is equipped between the outlet end of the steam pipe and the middle part of the steam pipe hydrophobic
Valve.
In a preferred embodiment, flow tune is equipped between the arrival end of the steam pipe and the middle part of the steam pipe
Save valve.
In a preferred embodiment, the root of the chimney is equipped with manometer.
In a preferred embodiment, the air inlet pipe is formed from steel.
The characteristics of the utility model coke oven chimney is unpowered hot-backup system and advantage are：
1, air inlet pipe is arranged by the side wall in the root of chimney in the utility model, and by steam pipe in air inlet pipe
Air heating, the air after the interior heating of air inlet pipe can enter chimney under the action of the self-suction of heat buoyancy and chimney, and upwards
Flowing is risen, and the air after heating can heat chimney in uphill process in chimney, meanwhile, in air inlet pipe after heating
Air enters after chimney, and the normal temperature air in atmosphere can be inhaled into air inlet pipe in air inlet pipe in the state of low pressure, continues quilt
Steam pipe heating, loop back and forth like this, chimney made to remain hot standby state, moreover, the air in atmosphere without corrosivity at
Point, extra erosion will not be generated to chimney, be conducive to chimney service life.
2, the utility model is passed through by the way that manometer is arranged in the root of chimney with detecting the negative pressure of the root in chimney
Flow control valve is set between the arrival end and middle part of steam pipe, to adjust the hot steam that steam pipe network is inputted into steam pipe
Amount, simultaneously, moreover it is possible to according to manometer detection chimney root negative pressure, the aperture of flow control valve is adjusted, in different seasons
It saves under environment temperature, so that the negative pressure of chimney root is remained setting value, to adapt to chimney caused by Various Seasonal environment temperature
Different situation of hot suction itself, heating according to need is energy saving, reduces cost.
3, the utility model is by being arranged drain valve between the outlet end and middle part of steam pipe, by the steaming in steam pipe
The water generated after vapour heat exchange, is discharged through drain valve, alternatively, the outlet end of steam pipe is connected to steam pipe network, by steam
The low steam of the temperature generated after the steam heat exchange of high temperature in pipe returns to steam pipe network, alternatively, by the outlet end of steam pipe
Connect with next stage heat utilization system, by after heat exchange in steam pipe steam or water be used for next stage process use.
Detailed description of the invention
The following drawings is only intended to do the utility model schematical explanation and illustration, not practical new to limit this
The range of type.
Fig. 1 is the structural schematic diagram of the unpowered hot-backup system of the utility model coke oven chimney.
Drawing reference numeral explanation：
1, coke oven；2, chimney；3, drain valve；4, air inlet pipe；5, steam pipe；6, flow control valve；7, manometer；8, cigarette
Road.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
In addition to non-individual defines the direction pointed out, the upper and lower equal directions being referred to herein are with the utility model
Shown in subject to upper and lower equal directions in Fig. 1, illustrate in this together.
As shown in Figure 1, the utility model provides a kind of unpowered hot-backup system of coke oven chimney, wherein the coke oven chimney
Unpowered hot-backup system includes coke oven 1 and chimney 2, and flue 8, the cigarette are equipped between the root and the coke oven 1 of the chimney 2
What the side wall of the root of chimney 2 tilted down is equipped with air inlet pipe 4, and the entrance of the air inlet pipe 4 is communicated with the atmosphere, the air inlet pipe 4
Interior air can be heated by a steam pipe 5, be in hot standby state, the steaming under the action of the air of the chimney 2 after the heating
The arrival end of steam pipe 5 is connected with steam pipe network.
Specifically, the air inlet pipe 4 of the utility model is cylindrical, the entrance of air inlet pipe 4 is communicated with the atmosphere, air inlet pipe 4
Outlet be connected with the side wall of 2 root of chimney, with can into chimney 2 supply gas, air inlet pipe 4 is set as dipping down ramp-like, with
It convenient for the air flows upwards being heated in air inlet pipe 4, facilitates access in chimney 2, steam pipe network provides heat into steam pipe 5
Steam is heated the air in air inlet pipe 4 by the steam pipe 5 of the steam of carrying heat, to provide the air of heat into chimney 2,
It realizes the heating to chimney 2,2 moment of chimney is made to be in hot standby state, wherein gate valve (not shown) is set on flue 8, when
When flue gas in coke oven 1 does not enter chimney 2, the gate valve on flue 8 is in closed state, when needing to make the flue gas in coke oven 1 to enter
When chimney 2, the gate valve on flue 8 is in opened condition.
The also settable desulphurization denitration mechanism of the utility model, wherein desulphurization denitration mechanism is knot well known in the prior art
The arrival end of structure, desulphurization denitration mechanism is connected with flue 8, and junction is located at the upstream of the gate valve on flue 8, in desulphurization denitration
When mechanism works, the flue gas that coke oven 1 is discharged into flue 8 enters progress desulphurization denitration processing in desulphurization denitration mechanism, and treated
Gas can be directly discharged into atmosphere, and during this period, gate valve is in closed state or micro- opening state, though without flue gas enter chimney 2 or
Only few flue gas enters chimney 2, but chimney 2 is still maintained at hot standby state under the air effect of the heating of air inlet pipe 4, so as to
Enter chimney 2 at any time in flue gas, avoids 2 temperature of chimney low and cannot achieve flue gas entrance, and in desulphurization denitration mechanism maintenance etc.
During stoppage in transit, in opened condition, by the flue 8 being arranged between coke oven 1 and chimney 2, the flue gas of coke oven 1 is directly discharged into for gate valve
In chimney 2, during this period, because the flue gas that coke oven 1 is discharged is in the condition of high temperature, therefore the entrance of steam pipe 5 can be passed through flow tune
It saves valve to close, cutting steam supply saves steam resource, or turn the aperture of flow control valve down.The utility model can guarantee
Coke oven safety in production, the i.e. operation of desulphurization denitration mechanism or not the hot standby state of chimney 2 is not influenced.
In one embodiment, as shown in Figure 1, the middle spiral of the steam pipe 5 is wound in the outer wall of the air inlet pipe 4,
To increase the contact area of steam pipe 5 Yu air inlet pipe 4, guarantees air thermally equivalent in air inlet pipe 4, realize the quick biography of heat
It passs.In another embodiment, what the middle part of the steam pipe 5 was back and forth wriggled is set in the air inlet pipe 4, i.e., in steam pipe 5
Portion is in reciprocal serpentine shape, and from the entrance of air inlet pipe 4 insertion air inlet pipe 4, directly to heat to the air in air inlet pipe 4, is added
It is hot rapid, certainly, the middle part of steam pipe 5 can also be set as to the tube bank that multiple row is end to end and is parallel to each other, multiple row tubing string can edge
It is circumferentially uniformly distributed or is distributed in matrix, in order to quickly be heated to the air in air inlet pipe 4.
Further, as shown in Figure 1, being equipped between the outlet end of the steam pipe 5 and the middle part of the steam pipe 5 hydrophobic
Valve 3, the water formed in steam pipe 5 to be discharged by drain valve 3, for the use of downstream other equipment after the completion of heat exchange.This
Outside, also the outlet end of steam pipe 5 can be made to be connected to steam pipe network, will be generated after the steam heat exchange of the high temperature in steam pipe 5
The low steam of temperature, return to steam pipe network, alternatively, the outlet end of steam pipe 5 is connect with next stage heat utilization system, with
By after heat exchange in steam pipe 5 steam or water be used for next stage process use.
Further, as shown in Figure 1, being equipped with flow between the arrival end of the steam pipe 5 and the middle part of the steam pipe 5
Regulating valve 6, by the adjusting of the aperture to flow control valve 6, to adjust the steam flow in steam pipe 5, and then adjust into
The rate of heat addition and heating temperature of air in tracheae 4, to adapt to the suction capacity of various external environment lower stacks 2.
Further, negative in 2 root of chimney to detect as shown in Figure 1, the root of the chimney 2 is equipped with manometer 7
Pressure, and then the negative pressure value that monitors the suction of chimney 2 namely the hot standby ability of chimney 2, and can be detected using manometer 7, adjust stream
The aperture of adjustable valve 6, the setting value for maintaining the root negative pressure of chimney 2 guarantee that chimney 2 has stable hot standby ability, example
Such as, when the suction of the chimney of monitoring 2 is less than setting value, the aperture of flow control valve 6 can be increased 5%, then observe manometer 7
The value of detection, it is such as also smaller than setting value, successively gradually the aperture of flow control valve 6 can be tuned up, until stablize in setting value, when
When the suction of the chimney 2 of monitoring is greater than the set value, gradually the aperture of flow control valve 6 can be turned down by above-mentioned steps, until steady
It is scheduled on setting value.Preferably, manometer 7 can be pressure gauge or pressure sensor.
Further, the air inlet pipe 4 is formed from steel, in order to conduct heat, in particular, steam pipe 5 be wound in into
When the outer wall of tracheae 4, heat transfer can be accelerated.
The utility model only passes through steam in steam pipe 5 and heats to air in air inlet pipe 4, so that the air after heating enters
Chimney 2, and rise under natural heat buoyancy and the effect of 2 self-suction of chimney, chimney 2 is heated, power-equipment is not necessarily to, with less
Energy consumption makes 2 moment of chimney keep reliable hot standby state, keeps the hot standby ability of chimney 2 de- independent of flue gas purification system or desulfurization
Nitre mechanism, it is hot standby to chimney progress for equipment without the extra heat of flue gas purification system or desulphurization denitration mechanism, reduce its operation
Resistance, equipment is few and without rotating machinery (such as blower etc.), avoid putting into excessive equipment and the energy, ensure that safety in production,
It is reliable for operation easy to maintain, save the energy and power, simplify flue gas chimney and purification system or desulphurization denitration mechanism it
Between the convenience that switches.
In addition, the hot suction of chimney 2 itself is also different, the utility model because winter is different with the environment temperature of summer
Also the hot standby ability of chimney 2, the standby system of the adjustable coke oven chimney Unpowered thermal of formation temperature can be adjusted depending on changes in ambient temperature
System, investment operating cost is low, heating according to need, saves the energy.
As described below, packet is carried out to the application method of the unpowered hot-backup system of coke oven chimney described in the utility model below
Include following steps：Step a：Enter the steam in steam pipe network in steam pipe 5, to heat the air in air inlet pipe 4；Step b：
Air in the air inlet pipe 4 after heating is under the effect of the self-suction of heat buoyancy and chimney 2, into the chimney 2, and to
The chimney 2 is heated during upper flowing, meanwhile, the air in atmosphere supplements under the suction function in the air inlet pipe 4
Into in the air inlet pipe 4；Step c：Repeating said steps a~step b, the chimney 2 are in hot standby state always, are guaranteed
The safety in production of coke oven reduces the consuming of the energy and power, at low cost.
Wherein, in step a, enter the saturated vapor that the steam in steam pipe 5 is 0.6MPa from steam pipe network, temperature is about
It is 160 degrees Celsius, to meet the needs of heating to air in air inlet pipe 4.
Further, in the step a, the negative pressure of 2 root of chimney is detected by manometer 7, and according to described
The negative pressure of 2 root of chimney adjusts the aperture of the flow control valve 6 on the steam pipe 5, keeps the negative pressure of 2 root of chimney
Setting value, further, the setting value of the negative pressure of 2 root of chimney are -200Pa~-500Pa, it is preferred that the chimney
The setting value of the negative pressure of 2 roots is -300Pa.
Further, in the step a, the air in steam and the air inlet pipe 4 in the steam pipe 5 completes heat
It after exchange, is discharged by the drain valve 3 on the steam pipe 5, for upstream device use, saves water resource.
Further, in the step a, the air in steam and the air inlet pipe 4 in the steam pipe 5 completes heat
After exchange, the steam pipe network is returned, for other equipment use, saves steam energy, or send to next stage heat utilization
System uses.
Further, during above-mentioned steps a~step c, the gate valve on flue 8 is in closed state or micro- opening state,
The flue gas of coke oven 1 will not enter chimney 2 or only few partial fume enters chimney 2, the desulphurization denitration machine being connected on flue 8
Structure is in running order, and the flue gas of coke oven 1 enters progress desulphurization denitration processing in desulphurization denitration mechanism, and treated, and gas can be straight
Run in into atmosphere, though that is, without flue gas or only, few flue gas enters chimney 2, chimney 2 remains at hot standby state, in order to
Flue gas enters chimney 2 at any time, avoids 2 temperature of chimney low and cannot achieve flue gas entrance；When the desulphurization denitration being connected on flue 8
When mechanism needs to overhaul, in opened condition, the flue gas of coke oven 1 is directly discharged into chimney 2 for the gate valve on flue 8, while will be steamed
The aperture of flow control valve 6 on steam pipe 5 is set as zero, to cut off steam supply, saves steam resource, or turn flow adjusting down
The aperture of valve 6, and chimney 2 can keep hot standby by the flue gas of high temperature.
The characteristics of the utility model coke oven chimney is unpowered hot-backup system and advantage are：
1, air inlet pipe 4 is arranged by the side wall in the root of chimney 2 in the utility model, and by steam pipe 5 to air inlet pipe 4
Interior air heating, the air after the interior heating of air inlet pipe 4 can enter chimney 2 under the action of the self-suction of heat buoyancy and chimney 2,
And rise is flowed up, the air after heating can heat chimney 2 in uphill process in chimney 2, meanwhile, air inlet pipe 4
Air after interior heating enters after chimney 2, the normal temperature air in atmosphere can be inhaled into the state of low pressure in air inlet pipe 4 into
Tracheae 4, continuation are heated by steam pipe 5, loop back and forth like this, chimney 2 is made to remain hot standby state, moreover, the sky in atmosphere
Gas is free of corrosive elements, will not generate extra erosion to chimney 2, be conducive to 2 service life of chimney.
2, the utility model, to detect the negative pressure of the root in chimney 2, is led to by the way that manometer 7 is arranged in the root of chimney 2
Setting flow control valve 6 is crossed between the arrival end and middle part of steam pipe 5, is inputted into steam pipe 5 with to adjust steam pipe network
The amount of hot steam, simultaneously, moreover it is possible to according to the negative pressure for 2 root of chimney that manometer 7 detects, the aperture of flow control valve 6 is adjusted, with
Under Various Seasonal environment temperature, the negative pressure of 2 root of chimney is made to remain setting value, is made with adapting to Various Seasonal environment temperature
At the different situation of the hot suction of chimney 2 itself, heating according to need is energy saving, reduces cost.
3, the utility model, will be in steam pipe 5 by the way that drain valve 3 is arranged between the outlet end and middle part of steam pipe 5
Steam heat exchange after the water that generates, be discharged through drain valve 3, alternatively, the outlet end of steam pipe 5 is connected to steam pipe network, with
By the low steam of the temperature generated after the steam heat exchange of the high temperature in steam pipe 5, steam pipe network is returned to, alternatively, by steam pipe 5
Outlet end connect with next stage heat utilization system, by after heat exchange in steam pipe 5 steam or water be used for next stage work
Sequence uses.
The above is only the preferred embodiment of the utility model, not does in any form to the utility model
Limitation, although the utility model has been disclosed with preferred embodiment as above, is not intended to limit the utility model, any affiliated
Has usually intellectual in technical field, in the range of not departing from technical solutions of the utility model, when using the disclosure above
Technology contents make a little change or be modified to the equivalent embodiment of equivalent variations, but it is all without departing from the utility model technology
The content of scheme, it is made by the above technical examples according to the technical essence of the present invention it is any it is simple modification, equivalent variations with
Modification, is still within the scope of the technical solutions of the present invention.
Claims (7)
1. a kind of unpowered hot-backup system of coke oven chimney, which is characterized in that the unpowered hot-backup system of coke oven chimney includes coke
Furnace and chimney are equipped with flue between the root of the chimney and the coke oven, what the side wall of the root of the chimney tilted down
Equipped with air inlet pipe, the entrance of the air inlet pipe is communicated with the atmosphere, and the air in the air inlet pipe can be heated by a steam pipe, institute
It states in hot standby state under the action of the air of chimney after the heating, the arrival end of the steam pipe is connected with steam pipe network.
2. the unpowered hot-backup system of coke oven chimney according to claim 1, which is characterized in that the middle part spiral shell of the steam pipe
Rotation is wound in the outer wall of the air inlet pipe.
3. the unpowered hot-backup system of coke oven chimney according to claim 1, which is characterized in that the middle part of the steam pipe is past
What is wriggled again is set in the air inlet pipe.
4. the unpowered hot-backup system of coke oven chimney according to any one of claim 1 to 3, which is characterized in that the steaming
Drain valve is equipped between the outlet end of steam pipe and the middle part of the steam pipe.
5. the unpowered hot-backup system of coke oven chimney according to any one of claim 1 to 3, which is characterized in that the steaming
Flow control valve is equipped between the arrival end of steam pipe and the middle part of the steam pipe.
6. the unpowered hot-backup system of coke oven chimney according to claim 5, which is characterized in that the root of the chimney is equipped with
Manometer.
7. the unpowered hot-backup system of coke oven chimney according to claim 1, which is characterized in that the air inlet pipe is by steel
At.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820466613.8U CN208155083U (en) | 2018-04-03 | 2018-04-03 | Coke oven chimney is unpowered hot-backup system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820466613.8U CN208155083U (en) | 2018-04-03 | 2018-04-03 | Coke oven chimney is unpowered hot-backup system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208155083U true CN208155083U (en) | 2018-11-27 |
Family
ID=64380570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820466613.8U Withdrawn - After Issue CN208155083U (en) | 2018-04-03 | 2018-04-03 | Coke oven chimney is unpowered hot-backup system |
Country Status (1)
| Country | Link |
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| CN (1) | CN208155083U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362134A (en) * | 2018-04-03 | 2018-08-03 | 中冶京诚工程技术有限公司 | Coke oven chimney Unpowered thermal is for system and method |
-
2018
- 2018-04-03 CN CN201820466613.8U patent/CN208155083U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362134A (en) * | 2018-04-03 | 2018-08-03 | 中冶京诚工程技术有限公司 | Coke oven chimney Unpowered thermal is for system and method |
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