CN219032073U - Reheating coke oven system - Google Patents
Reheating coke oven system Download PDFInfo
- Publication number
- CN219032073U CN219032073U CN202223432408.5U CN202223432408U CN219032073U CN 219032073 U CN219032073 U CN 219032073U CN 202223432408 U CN202223432408 U CN 202223432408U CN 219032073 U CN219032073 U CN 219032073U
- Authority
- CN
- China
- Prior art keywords
- gas
- coke oven
- main pipe
- waste gas
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Coke Industry (AREA)
Abstract
The utility model relates to a reheating coke oven system, which comprises a mixed gas feeding unit, a coke oven gas feeding unit, an exhaust gas shutter, a coke oven body and an exhaust gas feeding unit, wherein the mixed gas feeding unit is connected with the coke oven body; the waste gas supply unit consists of a waste gas main pipe, a variable frequency fan, a fan inlet regulating valve and a waste gas switching valve; one end of the waste gas main pipe is connected with the coke oven gas dividing flue, and the other end of the waste gas main pipe is connected with the mixed gas main pipe in the mixed gas feeding unit or is directly connected with the waste gas shutter; the exhaust main pipe is sequentially provided with a fan inlet regulating valve, a variable frequency fan and an exhaust switch valve along the flow direction of exhaust. By feeding the waste gas into the gas regenerator, the air feeding amount at the bottom of the vertical flame path is reduced while the temperature segregation of the regenerator is avoided, and the low nitrogen emission when the regenerative coke oven is heated by coke oven gas is further realized.
Description
Technical Field
The utility model relates to the technical field of regenerative coke ovens, in particular to a regenerative coke oven system.
Background
With the national importance of environmental protection, the requirements of energy conservation and emission reduction of coke ovens of steel united enterprises and independent coking enterprises are also higher and higher. In the existing large coke ovens in China, in order to control the combustion temperature in the vertical flame path and improve the high-directional heating uniformity in the vertical flame path, the prior large coke ovens mostly adopt the structural forms of high and low lamp caps, waste gas circulation, sectional heating and the like. The coke oven of the steel and iron combined enterprise mainly adopts lean gas heating, but the coke oven is heated by rich gas in the early production stage or the overhaul of a lean gas system, so that a reheating type coke oven which can be heated by lean gas or rich gas is usually adopted; independent coking enterprises generally adopt single-heating type coke ovens heated by rich gas, but some independent coking enterprises also adopt double-heating type coke ovens for reserving lean gas heating systems.
When the reheating type coke oven adopts rich gas for heating, the original gas heat storage chamber is filled with air, the lean gas outlet at the bottom of the vertical flame path and on the partition wall of the vertical flame path is changed into an air outlet, the excess air causes the air excess coefficient at the bottom of the vertical flame path to be close to or even far greater than 1, the combustion temperature is high, a large amount of nitrogen oxides are generated in the high temperature region, the concentration of the nitrogen oxides in the waste gas of the coke oven can be even higher than 800mg/m < 3 >, and the waste gas of the coke oven is far beyond the emission standard of the industry. Meanwhile, due to the limitation of the furnace body structure and the high temperature in the vertical flame path, the adjusting bricks at the gas outlet of the vertical flame path are difficult to adjust, and the adjusting bricks are not adjusted in the general production process. In addition, the amount of air entering the gas regenerator cannot be too small, otherwise segregation of adjacent regenerator temperatures can occur. Therefore, the bottom air supply amount of the single-heat type coke oven is relatively high, and the nitrogen oxide generation amount of the single-heat type coke oven is higher than that of a coke oven heated by lean gas. Therefore, the high NOx production of coke ovens (particularly, double hot ovens) when heating coke oven gas is a common challenge for the industry. In order to ensure that the coke oven discharge reaches the standard, a denitration procedure can be added only after the coke oven, so that the construction cost and the production cost are greatly improved.
The Chinese patent application with the application publication number of CN 108774537A discloses a low-nitrogen-emission reheating type coke oven heating system and an adjusting method thereof, wherein the coke oven heating system comprises a small flue, controllable heat exchange channels, gas channels and a combustion chamber, the gas channels are in one-to-one correspondence with the controllable heat exchange channels, and the controllable heat exchange channels comprise controllable lean gas heat exchange channels and controllable air heat exchange channels; the bottoms of the controllable air heat exchange channel and the controllable lean gas heat exchange channel are respectively connected with corresponding small flues, air inlet holes are formed in small flue connecting pipes corresponding to the controllable air heat exchange channels, lean gas inlet holes and air inlet holes are formed in small flue connecting pipes corresponding to the controllable lean gas heat exchange channels, and air inlet flow adjusting devices are respectively arranged at the air inlet holes and the lean gas inlet holes. The Chinese patent application with the application publication number of CN 113122284A discloses a method for regulating low nitrogen emission of a reheating coke oven, which comprises the following steps: 1) The adjusting bricks are arranged according to a lean gas heating mode; 2) When the gas-rich heating is adopted, the air outlets and/or the lean gas outlets of one or more sections in the vertical flame path are/is blocked by the regulating bricks, so that the combustion air quantity entering the bottom, the middle and the upper positions of the vertical flame path can be independently and quantitatively regulated, and the low nitrogen emission during the gas-rich heating is realized; 3) When the lean gas is used for heating, the adjusting brick used for plugging the air outlet or the lean gas outlet in the step 2) is removed, the initial state of the adjusting brick arranged in a lean gas heating mode is restored, and low nitrogen emission during lean gas heating is realized. According to the 2 technical schemes, the heating system is changed, the regenerators are in one-to-one correspondence with the bottom of the vertical flame path and the gas outlets at the middle/upper part, so that the combustion air quantity or gas entering the bottom of the vertical flame path and the position at the middle/upper part can be independently and quantitatively regulated, and the generation of nitrogen oxides is effectively reduced. However, both the above two solutions are realized by changing the heating system of the coke oven and even the original structure of the coke oven, so that the implementation has certain difficulty and risk. In particular, for coke ovens that have been put into production, the Jiao Lujie architecture has determined that it is difficult to achieve low nitrogen emissions by changing the oven configuration.
Disclosure of Invention
The utility model provides a reheating type coke oven system, which is characterized in that waste gas is fed into a gas regenerator, so that the temperature segregation of the regenerator is avoided, the air feeding amount at the bottom of a vertical fire channel is reduced, and the low nitrogen emission of the reheating type coke oven when the coke oven is heated by coke oven gas is realized.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the reheating coke oven system comprises a mixed gas feeding unit, a coke oven gas feeding unit, an exhaust gas shutter and a coke oven body, wherein the coke oven body comprises a small flue, a regenerator, a chute, a combustion chamber, a carbonization chamber and a furnace top; the reheating coke oven system further includes an exhaust gas supply unit; the waste gas supply unit consists of a waste gas main pipe, a variable frequency fan, a fan inlet regulating valve and a waste gas switching valve; one end of the waste gas main pipe is connected with the coke oven flue, the other end of the waste gas main pipe is connected with the mixed gas main pipe in the mixed gas feeding unit, or the other end of the waste gas main pipe is directly connected with the waste gas shutter; the exhaust main pipe is sequentially provided with a fan inlet regulating valve, a variable frequency fan and an exhaust switch valve along the flow direction of exhaust.
And the mixed gas main pipe is provided with a mixed gas switching valve at the upstream of the access point of the waste gas main pipe.
The mixed gas main pipe is connected with the corresponding gas regenerator through a plurality of gas branch pipes, and the gas branch pipes are provided with adjusting cocks and exchanging cocks.
The waste gas main pipe is provided with a plurality of expansion joints.
And an insulating layer is arranged outside the waste gas main pipe.
The coke oven body adopts a structure of air and gas multi-section heating.
Compared with the prior art, the utility model has the beneficial effects that:
(1) When the reheating type coke oven is heated by coke oven gas, air enters an air regenerator through an exhaust gas shutter to be preheated, and then enters a vertical flame path; the waste gas is preheated by the gas regenerator and then enters the bottom or the middle upper part of the vertical flame path through a mixed gas outlet in the vertical flame path, so that the local high temperature generated by the overmuch air fed into the vertical flame path for peroxidation is avoided, and the generation of nitrogen oxides is reduced; meanwhile, the exhaust gas is fed to lean the fed air and the burnt gas, so that the concentration of combustible components is reduced, and the generation of nitrogen oxides is further reduced; in addition, the exhaust gas is fed from the bottom of the vertical flame path, which is equivalent to increasing the circulation quantity of the exhaust gas, thereby achieving the purpose of elongating flame and improving the high-directional heating uniformity of the vertical flame path;
(2) When the reheating type coke oven adopts coke oven gas for heating, in order to reduce the generation of nitrogen oxides, the air supply quantity of the gas heat storage chamber is generally reduced, so that the temperature of the gas heat storage chamber is higher than that of the adjacent air heat storage chamber, namely, temperature segregation is generated, and the coke oven production is influenced; the utility model can reduce the generation of nitrogen oxides in the vertical flame path and solve the problem of temperature segregation of the regenerator by supplying the waste gas to the gas regenerator instead of air, and the supply amount of the waste gas can be adjusted according to the temperature condition of the regenerator;
(3) The waste gas supply unit is connected with the mixed gas main pipe in the original mixed gas supply unit, so that waste gas can enter the gas regenerator through the mixed gas main pipe, the gas regulating valve and the gas branch pipe, and the exchange transmission device of mixed gas can be used for reversing operation, thereby saving a great amount of equipment investment;
(4) On the premise of not changing the structure of the existing coke oven, the problem that the regenerative coke oven is difficult to burn lean gas and rich gas with low nitrogen can be solved by only adding the waste gas supply unit, and the common problem of high emission of nitrogen oxides when the rich gas is adopted for heating is solved, so that the regenerative coke oven is suitable for newly built coke ovens and coke ovens which are put into production;
(5) By changing the supply amount of the waste gas, the high-directional heating uniformity of the coke oven can be changed, the emission of nitrogen oxides of the coke oven can be reduced, and even the emission reaching the standard can be realized without a subsequent denitration process, so that the energy saving and emission reduction purposes of the coke oven are achieved; the operation is simple and convenient, the operation of workers in severe environments is avoided, and the labor intensity is reduced.
Drawings
Fig. 1 is a schematic view of a recuperative coke oven system according to the present utility model.
Fig. 2 is a sectional view A-A in fig. 1.
In the figure: 1. small flue 2 regenerator 21 gas regenerator 22 air regenerator 3 chute 4 combustion chamber 5 furnace roof 6 exhaust gas shutter 61 damper 7 mixed gas feed unit 71 mixed gas main 72 adjustment tap 73 exchange tap A74 exchange tap B75 mixed gas switch valve 8 coke oven gas feed unit 9 exhaust gas feed unit 91 exhaust gas switch valve 92 variable frequency fan 93 fan inlet adjustment valve 94 exhaust gas main 10 coke oven gas split flue
Detailed Description
The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:
as shown in fig. 1 and 2, the reheating coke oven system comprises a mixed gas feeding unit 7, a coke oven gas feeding unit 8, an exhaust gas shutter 6 and a coke oven body, wherein the coke oven body comprises a small flue 1, a regenerator 2, a chute 3, a combustion chamber 4, a carbonization chamber and a furnace top 6; the reheating coke oven system further comprises an exhaust gas supply unit 9; the waste gas supply unit 9 is composed of a waste gas main pipe 94, a variable frequency fan 92, a fan inlet regulating valve 93 and a waste gas switch valve 91; one end of the main waste gas pipe 94 is connected with the coke oven gas dividing flue 10, the other end of the main waste gas pipe 94 is connected with the main mixed gas pipe 71 in the mixed gas feeding unit 7, or the other end of the main waste gas pipe 94 is directly connected with the waste gas shutter 6; a fan inlet adjusting valve 93, a variable frequency fan 92, and a waste gas switching valve 91 are sequentially provided in the waste gas main pipe 94 along the flow direction of waste gas.
The main gas pipe 71 is provided with a gas mixture switching valve 75 upstream of the point of connection of the main gas pipe 94.
The main mixed gas pipe 71 is connected to the corresponding gas regenerator 21 through a plurality of gas branch pipes, and the gas branch pipes are provided with an adjusting cock 72 and an exchanging cock (comprising an exchanging cock A73 and an exchanging cock B74).
The main exhaust pipe 94 is provided with a plurality of expansion joints.
An insulating layer is provided outside the main exhaust pipe 94.
The coke oven body adopts a structure of air and gas multi-section heating.
According to the exhaust gas back-mixing method of the reheating type coke oven system, when the coke oven is heated by adopting mixed gas, the exhaust gas switch valve 91 on the exhaust gas main pipe 94 is closed, and the exhaust gas supply unit 9 does not participate in the coke oven production process; when the coke oven is heated by coke oven gas, the mixed gas switching valve 75 is closed to cut off the mixed gas supply; the waste gas switch valve 91 on the waste gas main pipe 94 is opened, air enters the air regenerator 22 through the waste gas switch 6, waste gas of the coke oven sub-flue 10 enters the gas regenerator 21 through the waste gas main pipe 94, and enters the combustion chamber vertical flame path after being preheated by the gas regenerator 21.
The utility model relates to a reheating coke oven system, which comprises a mixed gas feeding unit 7, a coke oven gas feeding unit 8, an exhaust gas shutter 6 and a coke oven body, wherein the coke oven body comprises a small flue 1, a regenerator 2, a chute 3, a combustion chamber 4, a carbonization chamber and a furnace top 5. The reheating coke oven (hereinafter referred to as coke oven) may be heated by either lean gas or rich gas. The utility model adds the waste gas supply unit 9 on the basis of the original reheating type coke oven system, and when the coke oven is heated by adopting mixed gas, the waste gas supply unit 9 is closed; when the coke oven is heated by coke oven gas, the mixed gas supply is cut off, the waste gas supply unit 9 is opened, air enters the air heat storage chamber 22 through the waste gas shutter 6, waste gas enters the gas heat storage chamber 21 through the waste gas supply unit 9, and enters the vertical flame path after being preheated through the gas heat storage chamber 21, so that the overcombustion in the vertical flame path is avoided, and the generation of nitrogen oxides is reduced.
In the waste gas supply unit 9, one end of a waste gas main pipe 94 is connected with a gas taking port of the coke oven gas dividing flue 10, the other end is connected with a mixed gas main pipe 71 in the mixed gas supply unit 7, and waste gas is supplied to the coke oven by using the existing mixed gas supply unit 7 and an exchange transmission device.
The waste gas supply unit 9 consists of a waste gas main pipe 94, a variable frequency fan 92, a valve and other devices, the total supply amount of waste gas can be controlled by the variable frequency fan 92 and a fan inlet regulating valve 93, and a waste gas switch valve 91 is arranged between the waste gas main pipe 94 and the mixed gas main pipe 71; the amount of exhaust gas fed into each gas regenerator 21 can be controlled by the existing control valves of the mixed gas feed unit 7.
The exhaust main pipe 94 is provided with a plurality of expansion joints and may be provided with a heat insulating layer as required.
The exhaust gas main pipe 94 may be directly connected to the exhaust gas shutter 6 without passing through the mixed gas supply unit 7, and may supply the exhaust gas to the coke oven gas regenerator 21. However, this solution results in corresponding equipment such as pipes and regulating valves, and increases equipment investment. After the main exhaust pipe 94 is directly connected with the exhaust shutter 6, when the coke oven is heated by adopting mixed gas, the coke oven gas supply unit 8 is closed, the exhaust gas supply unit 9 is closed, the mixed gas supply unit 7 is opened, the mixed gas enters the gas regenerator 21 through the exhaust shutter 6, air enters the air regenerator 22 through the air door 61 of the exhaust shutter 6, and the two gases enter the bottom part and the middle upper part of the vertical flame path respectively for combustion heating; when the coke oven is heated by coke oven gas, the coke oven gas feeding unit 8 is opened, the gas feeding of the mixed gas feeding unit 7 is cut off, the waste gas feeding unit 9 is opened, air enters the air regenerator 22 through the air door of the waste gas shutter 6, waste gas enters the gas regenerator 21 through the waste gas feeding unit 9, and then enters the vertical flame path of the combustion chamber 4 after being preheated by the gas regenerator 21, so that the feeding amount of air at the bottom of the vertical flame path is reduced, the bottom of the vertical flame path is changed into lean oxygen combustion, and the generation of nitrogen oxides is reduced; meanwhile, the concentration of the combustion gas can be reduced by feeding the waste gas, the flame height is prolonged, the temperature of the high-temperature point of the flame is reduced, the generation of nitrogen oxides is further reduced, and the high-directional heating uniformity of the vertical flame path is improved.
The reheating type coke oven system does not need to change the internal structure of the existing coke oven, is applicable to all types of coke ovens in the coking industry, and is designed according to a mixed gas heating mode. When coke oven gas is adopted for heating, the mixed gas supply unit 7 is closed, the waste gas supply unit 9 is opened, and the production operation of the coke oven exchange system and the like is consistent with that when the mixed gas is adopted for production. The utility model is suitable for newly-built coke ovens and is also suitable for the transformation of the existing coke ovens, the process flow is simple, the investment is saved, and the utility model has high popularization value. The utility model is also applicable to single-heat type coke ovens heated by coke oven gas only.
The following examples are given by way of illustration of detailed embodiments and specific procedures based on the technical scheme of the present utility model, but the scope of the present utility model is not limited to the following examples.
[ example ]
As shown in fig. 1 and 2, in the present embodiment, the reheating coke oven system includes a mixed gas supply unit 7, a coke oven gas supply unit 8, an exhaust gas shutter 6, a coke oven body, and an exhaust gas supply unit 9, and the reheating coke oven can be heated by either lean gas or rich gas; the coke oven body comprises a small flue 1, a regenerator 2, a chute 3, a combustion chamber 4 and a furnace top 5.
The waste gas supply unit 9 is composed of a waste gas main pipe 94, a variable frequency fan 92, a waste gas switch valve 91, a fan regulating valve 93 and other devices, one end of the waste gas main pipe 9 is connected with a gas taking port on the coke oven gas dividing flue 10, the other end is connected with the mixed gas main pipe 71 in the mixed gas supply unit 7, and waste gas is supplied into the coke oven by utilizing the original mixed gas supply unit 7 and an exchange transmission device.
When the coke oven is heated by coke oven gas, the mixed gas switching valve 75 is closed, the waste gas switching valve 91 is opened, and the waste gas enters the updraft gas regenerator through the mixed gas main pipe 71, the adjusting cock 72, the exchanging cock a 73 corresponding to the updraft gas regenerator, and the waste gas shutter 6. When the coke oven heating system is reversed, the exchange transmission device is switched through the opening and closing of the exchange cock A73 and the exchange cock B74, so that the waste gas enters the reversed ascending gas flow gas regenerator through the exchange cock B74. By connecting the waste gas supply unit 9 with the original mixed gas unit 7, equipment such as a common pipeline, a cock, an exchange transmission device and the like can be used, and the corresponding equipment investment can be greatly reduced.
The total amount of the supplied waste gas can be controlled by a variable frequency fan 92 and a fan inlet regulating valve 93, and a waste gas main pipe 94 is provided with a waste gas switch valve 91 at one end close to the mixed gas main pipe 71 for rapidly cutting off the connection between the waste gas supply unit 9 and the mixed gas supply unit 7; the amount of exhaust gas fed into each gas regenerator 21 can be controlled by the adjusting tap 72 in the original mixed gas feed unit 7. When coke oven gas is used for heating, the supply amount of the waste gas is related to the temperature of the regenerator 2 and the generation amount of nitrogen oxides in the vertical flame path, and the supply amount of the waste gas is increased, so that the generation of nitrogen oxides can be reduced to a certain extent, and the high-directional heating uniformity of the vertical flame path can be improved. However, too much exhaust gas supply can result in the gas regenerator 21 being cooler than the air regenerator 22, so that a proper supply of exhaust gas must be ensured so that the temperatures of the air regenerator 22 and the gas regenerator 21 are close.
In this embodiment, the exhaust main pipe 94 and the mixed gas main pipe 71 are provided with a plurality of expansion joints, and a heat insulating layer is provided outside the exhaust main pipe 94. Because the temperature of waste gas is relatively high (about 200 ℃), the expansion joint can prevent the pipeline from being deformed due to thermal expansion, and the heat preservation layer is arranged to prevent the environment temperature of the basement from being too high.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The reheating coke oven system comprises a mixed gas feeding unit, a coke oven gas feeding unit, an exhaust gas shutter and a coke oven body, wherein the coke oven body comprises a small flue, a regenerator, a chute, a combustion chamber, a carbonization chamber and a furnace top; the method is characterized in that the reheating coke oven system further comprises an exhaust gas supply unit; the waste gas supply unit consists of a waste gas main pipe, a variable frequency fan, a fan inlet regulating valve and a waste gas switching valve; one end of the waste gas main pipe is connected with the coke oven flue, the other end of the waste gas main pipe is connected with the mixed gas main pipe in the mixed gas feeding unit, or the other end of the waste gas main pipe is directly connected with the waste gas shutter; the exhaust main pipe is sequentially provided with a fan inlet regulating valve, a variable frequency fan and an exhaust switch valve along the flow direction of exhaust.
2. The multiple thermal coke oven system of claim 1, wherein the mixed gas main pipe is provided with a mixed gas on-off valve upstream of the exhaust main pipe access point.
3. The reheating coke oven system of claim 1, wherein the mixed gas main pipe is connected to the corresponding gas regenerator through a plurality of gas branch pipes, and the gas branch pipes are provided with adjusting cocks and exchanging cocks.
4. The multiple thermal coke oven system of claim 1, wherein the exhaust main pipe is provided with a plurality of expansion joints.
5. The multiple thermal coke oven system of claim 1, wherein an insulation layer is provided outside the exhaust main pipe.
6. The multiple thermal coke oven system of claim 1, wherein the coke oven body is configured for multi-stage heating of air and gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223432408.5U CN219032073U (en) | 2022-12-21 | 2022-12-21 | Reheating coke oven system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223432408.5U CN219032073U (en) | 2022-12-21 | 2022-12-21 | Reheating coke oven system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219032073U true CN219032073U (en) | 2023-05-16 |
Family
ID=86314498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223432408.5U Active CN219032073U (en) | 2022-12-21 | 2022-12-21 | Reheating coke oven system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219032073U (en) |
-
2022
- 2022-12-21 CN CN202223432408.5U patent/CN219032073U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102207286B (en) | Low-heating-value gas burner | |
| CN106051774A (en) | Intelligent continuous heat-accumulating combustion device and control method thereof | |
| CN103088178B (en) | Blast furnace hot-blast stove flue gas self-circulation combustion method and system | |
| CN114717014B (en) | High-temperature low-nitrogen combustion coke oven | |
| CN202521609U (en) | Multi-functional heat storage type impulse burner | |
| CN108728126B (en) | High-directional heating uniformity at any time adjustable coke oven heating system and adjusting method | |
| CN219032073U (en) | Reheating coke oven system | |
| CN115806828A (en) | Reheating coke oven system and waste gas return method thereof | |
| CN108728125B (en) | Heating system of gas-rich heating coke oven with variable heating height and adjusting method thereof | |
| CN210801149U (en) | Mixed arrangement structure of multiple gas burners of boiler | |
| CN108774537B (en) | Low-nitrogen-emission reheating coke oven heating system and adjusting method thereof | |
| CN107166974A (en) | A kind of pre-mixing type heat-accumulation burner | |
| CN113122284B (en) | Low-nitrogen emission adjusting method for reheating coke oven | |
| CN103525959A (en) | Method for controlling air temperature of blast furnace | |
| CN1172008C (en) | Equipment and method for preheating gas and combustion-promoting air of blast furnace | |
| CN104988266A (en) | Shared hot-air furnace system for blast furnace and use method thereof | |
| CN109737402B (en) | U-shaped flame low-nitrogen oxide burner for high-temperature hearth | |
| CN218665898U (en) | Single-heating coke oven body structure of coke oven gas | |
| CN111442276A (en) | Low-nitrogen oxide heat accumulating type burner and control system and control method thereof | |
| CN208373103U (en) | Active coke regeneration system | |
| CN205979792U (en) | Continuous heat accumulation burner | |
| CN201825836U (en) | Bottom fired type burning gun of regenerative chamber | |
| CN204494400U (en) | A kind of ever-burning flame system of regenerative combustion system and regenerative combustion system | |
| CN218645555U (en) | Low-nitrogen combustion system of gas boiler | |
| CN106316075B (en) | A kind of glass melter combustion system of producer gas and coke-stove gas exchange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |