CN205874296U - Can reduce coke oven exhaust gas circulation device of nitrogen oxide concentration in waste gas - Google Patents
Can reduce coke oven exhaust gas circulation device of nitrogen oxide concentration in waste gas Download PDFInfo
- Publication number
- CN205874296U CN205874296U CN201620774452.XU CN201620774452U CN205874296U CN 205874296 U CN205874296 U CN 205874296U CN 201620774452 U CN201620774452 U CN 201620774452U CN 205874296 U CN205874296 U CN 205874296U
- Authority
- CN
- China
- Prior art keywords
- waste gas
- coke oven
- supervisor
- exhaust gas
- control valve
- 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
Landscapes
- Coke Industry (AREA)
Abstract
The utility model relates to a can reduce coke oven exhaust gas circulation device of nitrogen oxide concentration in waste gas, coke oven common duct connect waste gas respectively and are responsible for A and waste gas person in charge B, waste gas is responsible for A and waste gas and is responsible for the clean -out of B through coke oven bottom flue bottom and communicates with the coke oven bottom flue that has different airflow direction when the coke oven heating respectively, electrical control valve A is established to the last high temperature fan that is equipped with of waste gas main duct on the waste gas connecting pipe A, establish electrical control valve B on the waste gas connecting pipe B, and high temperature fan, electrical control valve A and electrical control valve B are connected with coke oven heating control system respectively. The utility model discloses a flue waste gas mixing in the extraction coke oven common duct can reduce the combustion intensity of coal gas to coke oven heating's the updraft in to reach the mesh that reduces nitrogen oxide content among the outer waste gas exhaust of coke oven, the device simple structure of its adoption, small investment, regulation convenience to can realize automatic control.
Description
Technical field
This utility model relates to coke oven environmental technology field, particularly relates to a kind of nitrogen oxides of exhaust gas concentration of reducing
Coke oven exhaust gas circulating device.
Background technology
In process of production, the burning in coke oven combustion chamber of coal gas and air can produce nitrogen oxides (NO to coke ovenX).These
The waste gas of nitrogen-containing oxide can be directly discharged in air by coke oven chimney, and the nitrogen oxides in air can damage the ozone layer,
Cause acid rain, pollute environment.Along with China's pay attention to day by day to environmental problem, to the discharge standard of nitrogen oxides in coke oven exhaust gas
Have also been made stricter regulation, but the nitrous oxides concentration of overwhelming majority coke oven discharge all exceeds standard at present.
The coke oven heating technology that can reduce nitrous oxides concentration at present mainly has two kinds, and the first is carried out with waste gas circulation
It is main coke oven construction optimization design with zone heating etc., although the method can be greatly reduced the dense of nitrogen oxides in coke oven exhaust gas
Degree, but it is existing to the discharge standard requirement of nitrogen oxides in coke oven exhaust gas to be not met by country；Its two be to discharge Jiao
Furnace exhaust carries out denitration process, although this technology also can be greatly reduced the concentration of nitrogen oxides in coke oven exhaust gas, but it is maximum scarce
Point is that processing means investment is huge, take up an area more, operating cost is high, directly limit the universal of this technology and application.
Summary of the invention
This utility model provides a kind of coke oven exhaust gas circulating device reducing nitrogen oxides of exhaust gas concentration, by taking out
Take the stack gases in coke oven main chimney flue to be blended in the ascending air of coke oven heating, the combustion intensity of coal gas can be reduced, and
Reduce the purpose of amount of nitrogen oxides in the outer waste air of coke oven；Its simple in construction, small investment, easy to adjust, and can realize
Automatically control.
In order to achieve the above object, this utility model realizes by the following technical solutions:
A kind of coke oven exhaust gas circulating device reducing nitrogen oxides of exhaust gas concentration, including waste gas supervisor A and waste gas master
Pipe B；Described waste gas supervisor A and waste gas supervisor B is embedded in small flue duct of coke oven two side bottom respectively, and coke oven main chimney flue is near coke oven
Dividing and draw waste gas header at flue point, waste gas header connects waste gas supervisor A by waste gas connecting tube A, is connected by waste gas
Pipe B connects waste gas supervisor B；Waste gas supervisor A and waste gas supervisor B is added with at coke oven respectively by the clean-out hatch bottom small flue duct of coke oven
There is during heat the small flue duct of coke oven connection of different airflow direction；Waste gas header is provided with high-temperature blower, and waste gas connecting tube A sets electricity
Dynamic regulation valve A, waste gas connecting tube B sets electric control valve B, high-temperature blower, electric control valve A and electric control valve B respectively with
Heating control system of coke oven connects.
Along being longitudinally provided with multiple clean-out hatch bottom described small flue duct of coke oven, waste gas supervisor A and waste gas supervisor B passes through Y respectively
Shape ingress pipe connects the corresponding outermost clean-out hatch of small flue duct of coke oven.
It is respectively equipped with heat-insulation layer outside described waste gas supervisor A and waste gas supervisor B.
High-temperature compensator, waste gas supervisor A and the end of waste gas supervisor B it is respectively equipped with on described waste gas supervisor A and waste gas supervisor B
End is respectively equipped with pipeline voltage stabilizer.
Compared with prior art, the beneficial effects of the utility model are:
1) device described in the utility model can increase the waste gas circulation amount of coke oven, reduces combustion intensity, reduces coke oven and gives up
Amount of nitrogen oxides in gas；
2) apparatus structure is simple, it is little to take up an area, small investment, easy to adjust, and can realize automatically controlling；
3) waste gas introduces from small flue duct of coke oven bottom purge hole, has lower end cleaning function to bottom flue simultaneously.
Accompanying drawing explanation
Fig. 1 is that the structure of the coke oven exhaust gas circulating device reducing nitrogen oxides of exhaust gas concentration described in the utility model is shown
It is intended to.
Fig. 2 is the A-A sectional view in Fig. 1.
Fig. 3 is small flue duct of coke oven arrangement schematic diagram.
In figure: 1. coke oven main chimney flue 2. high-temperature blower 3. electric control valve A 4. waste gas supervisor A 5. high-temperature compensator
6.Y type ingress pipe 7. pipeline voltage stabilizer 8. heating control system of coke oven 9. electric control valve B 10. waste gas supervisor's B11. coke oven
Divide flue 12. small flue duct of coke oven 13. clean-out hatch 14. combustor 15. carbonization chamber 16. regenerator
Detailed description of the invention
Below in conjunction with the accompanying drawings detailed description of the invention of the present utility model is described further:
As Figure 1-Figure 2, a kind of coke oven exhaust gas reducing nitrogen oxides of exhaust gas concentration described in the utility model follows
Loop device, including waste gas supervisor A 4 and waste gas supervisor B 10；Described waste gas supervisor A 4 and waste gas supervisor B 10 is embedded in respectively
12 liang of side bottoms of small flue duct of coke oven, coke oven main chimney flue 1 is dividing extraction waste gas header at flue 11 point near coke oven, and waste gas is total
Pipe connects waste gas supervisor A 4 by waste gas connecting tube A, connects waste gas supervisor B 10 by waste gas connecting tube B；Waste gas supervisor A 4
With waste gas supervisor B 10 by the clean-out hatch 13 bottom small flue duct of coke oven 12 respectively from there is different air-flow side when coke oven heating
To small flue duct of coke oven 12 connect；Waste gas header is provided with high-temperature blower 2, and waste gas connecting tube A sets electric control valve A 3, useless
Setting electric control valve B 9 in gas connecting tube B, high-temperature blower 2, electric control valve A 3 and electric control valve B 9 add with coke oven respectively
Thermal control system 8 connects.
Along being longitudinally provided with multiple clean-out hatch 13 bottom described small flue duct of coke oven 12, waste gas supervisor A 4 and waste gas supervisor B 10
The corresponding outermost clean-out hatch of small flue duct of coke oven 12 13 is connected respectively by Y shape ingress pipe 6.
It is respectively equipped with heat-insulation layer outside described waste gas supervisor A 4 and waste gas supervisor B 10.
It is respectively equipped with high-temperature compensator 5, waste gas supervisor A 4 and waste gas on described waste gas supervisor A 4 and waste gas supervisor B 10
The end of supervisor B 10 is respectively equipped with pipeline voltage stabilizer 7.
As it is shown on figure 3, in coke oven heating system, combustor 14 and the alternate setting of carbonization chamber 15, burn difference bottom room 14
Connect small flue duct of coke oven 12 by chute district, bottom small flue duct of coke oven 12, be provided with clean-out hatch 13.According to air-flow side during coke oven heating
To difference (ascending air or down current) small flue duct of coke oven 12 is in turn divided in order 1# bottom flue, 2# bottom flue,
3# bottom flue ... 6# bottom flue (small flue duct of coke oven quantity does not limits, herein for illustrating).As shown in airflow direction in figure, single
Number bottom flue is ascending air, even numbers bottom flue is down current.
Being arranged in sequence with n in Fig. 1 altogether and arrange small flue duct of coke oven 12, wherein odd numbers bottom flue is respectively by outermost clean-out hatch
13 connect Y shape ingress pipe 6, then reconnect waste gas supervisor A 4, and even numbers bottom flue is connected by outermost clean-out hatch 13 respectively
Y shape ingress pipe 6, then reconnects waste gas supervisor B 10.
The work of a kind of coke oven exhaust gas circulating device reducing nitrogen oxides of exhaust gas concentration described in the utility model is former
Manage as follows:
Coke oven heating system commutation time, the small flue duct of coke oven 12 bottom adjacent combustor 14 is respectively provided with down current or
Ascending air；Waste gas supervisor A 4 is connected by the clean-out hatch 13 bottom small flue duct of coke oven 12 respectively with waste gas supervisor B 10 to be had
The small flue duct of coke oven 12 of different airflow directions；
When the small flue duct of coke oven 12 that waste gas supervisor A 4 connects is transferred to down current by ascending air, waste gas supervisor B
10 small flue duct of coke ovens 12 connected are transferred to ascending air by down current simultaneously；Now heating control system of coke oven 8 controls electricity
Dynamic regulation valve A 3 closes, and electric control valve B 9 opens, and high-temperature blower 2 passes through waste gas from coke oven main chimney flue 1 extracting high-temperature waste gas
Supervisor B 10 and clean-out hatch 13 enter in the ascending air of corresponding small flue duct of coke oven 12；
When the small flue duct of coke oven 12 that waste gas supervisor A 4 connects is transferred to ascending air by down current, waste gas supervisor B10
The small flue duct of coke oven 12 connected is transferred to down current by ascending air simultaneously；Now heating control system of coke oven 8 controls electronic
Regulation valve B 9 closes, and electric control valve A 3 opens, and high-temperature blower 2 passes through waste gas master from coke oven main chimney flue 1 extracting high-temperature waste gas
Pipe A 4 and clean-out hatch 13 enter in the ascending air of corresponding small flue duct of coke oven 12.
Realized the automatic start-stop of high-temperature blower 2 by heating control system of coke oven 8, and realize electric control valve A 3 and electricity
Dynamic regulation valve B 9 and the interlocked control of heating system reversing arrangement, make waste gas import all the time in ascending air and participate in combustor combustion
Burning, high-temperature blower 2 is adjustable speed fan, by speed regulating control waste gas import volume.In above work process, filled by high temperature compensation
Put 5 and pipeline voltage stabilizer 7 ensure that security of system stable operation, high temperature compensation device 5 can use high-temperature expansion joint.
The above, only this utility model preferably detailed description of the invention, but protection domain of the present utility model is not
Being confined to this, any those familiar with the art is in the technical scope that this utility model discloses, according to this practicality
Novel technical scheme and utility model thereof conceive equivalent or change in addition, all should contain at protection model of the present utility model
Within enclosing.
Claims (4)
1. the coke oven exhaust gas circulating device that can reduce nitrogen oxides of exhaust gas concentration, it is characterised in that include that waste gas is responsible for A
It is responsible for B with waste gas；Described waste gas supervisor A and waste gas supervisor B is embedded in small flue duct of coke oven two side bottom respectively, and coke oven main chimney flue exists
Dividing extraction waste gas header at flue point near coke oven, waste gas header connects waste gas supervisor A by waste gas connecting tube A, passes through
Waste gas connecting tube B connects waste gas supervisor B；Waste gas supervisor A and waste gas supervisor B by the clean-out hatch bottom small flue duct of coke oven respectively with
There is the small flue duct of coke oven connection of different airflow direction when coke oven heating；Waste gas header is provided with high-temperature blower, and waste gas connects
Set electric control valve A on pipe A, waste gas connecting tube B sets electric control valve B, high-temperature blower, electric control valve A and motorized adjustment
Valve B is connected with heating control system of coke oven respectively.
A kind of coke oven exhaust gas circulating device reducing nitrogen oxides of exhaust gas concentration the most according to claim 1, it is special
Levying and be, along being longitudinally provided with multiple clean-out hatch bottom described small flue duct of coke oven, waste gas supervisor A and waste gas supervisor B passes through Y shape respectively
Ingress pipe connects the corresponding outermost clean-out hatch of small flue duct of coke oven.
A kind of coke oven exhaust gas circulating device reducing nitrogen oxides of exhaust gas concentration the most according to claim 1, it is special
Levy and be, outside described waste gas supervisor A and waste gas supervisor B, be respectively equipped with heat-insulation layer.
A kind of coke oven exhaust gas circulating device reducing nitrogen oxides of exhaust gas concentration the most according to claim 1, it is special
Levy and be, described waste gas supervisor A and waste gas supervisor B is respectively equipped with high-temperature compensator, waste gas supervisor A and the end of waste gas supervisor B
End is respectively equipped with pipeline voltage stabilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620774452.XU CN205874296U (en) | 2016-07-21 | 2016-07-21 | Can reduce coke oven exhaust gas circulation device of nitrogen oxide concentration in waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620774452.XU CN205874296U (en) | 2016-07-21 | 2016-07-21 | Can reduce coke oven exhaust gas circulation device of nitrogen oxide concentration in waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205874296U true CN205874296U (en) | 2017-01-11 |
Family
ID=57697860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620774452.XU Active CN205874296U (en) | 2016-07-21 | 2016-07-21 | Can reduce coke oven exhaust gas circulation device of nitrogen oxide concentration in waste gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205874296U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916888A (en) * | 2018-09-17 | 2018-11-30 | 陕西黑猫焦化股份有限公司 | A kind of device reducing the nitrogen oxides in flue gases of cock oven by waste gas circulation |
| CN112066399A (en) * | 2020-09-08 | 2020-12-11 | 鞍钢股份有限公司 | Nitrogen reduction device and nitrogen reduction process suitable for coke oven |
| CN113025349A (en) * | 2021-03-09 | 2021-06-25 | 中冶焦耐(大连)工程技术有限公司 | Coke oven vertical flue structure with sectional heating and sectional exhaust gas circulation |
-
2016
- 2016-07-21 CN CN201620774452.XU patent/CN205874296U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108916888A (en) * | 2018-09-17 | 2018-11-30 | 陕西黑猫焦化股份有限公司 | A kind of device reducing the nitrogen oxides in flue gases of cock oven by waste gas circulation |
| CN112066399A (en) * | 2020-09-08 | 2020-12-11 | 鞍钢股份有限公司 | Nitrogen reduction device and nitrogen reduction process suitable for coke oven |
| CN113025349A (en) * | 2021-03-09 | 2021-06-25 | 中冶焦耐(大连)工程技术有限公司 | Coke oven vertical flue structure with sectional heating and sectional exhaust gas circulation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205874296U (en) | Can reduce coke oven exhaust gas circulation device of nitrogen oxide concentration in waste gas | |
| CN109882871A (en) | A kind of high-concentration organic waste gas processing system | |
| CN207793163U (en) | A kind of self-loopa tunnel type carbonizing kiln | |
| CN206222294U (en) | A kind of flue gas recycling system | |
| CN206127346U (en) | Ou ye stove coal powder injection flue gas self -loopa structure | |
| CN106010587A (en) | Coke oven heating method capable of lowering concentration of nitrogen oxides in waste gas | |
| CN102072499B (en) | Flue gas low temperature denitriding and coal slime drying combined circulating system | |
| CN106635068A (en) | Coke oven and heating method thereof | |
| CN202912990U (en) | Hot blast stove system | |
| CN205066394U (en) | Interior STREAMING oven | |
| CN206817995U (en) | A kind of online integral system of cement kiln waste heat recovery | |
| CN110425550A (en) | The purification treatment device and technique of a kind of tar tail gas and glance coal | |
| CN204757354U (en) | Energy -concerving and environment -protective biomass boiler | |
| CN204535441U (en) | The energy-saving gas kiln that a kind of waste heat is combustion-supporting | |
| CN204923434U (en) | Living beings hot -blast furnace for big -arch shelter | |
| CN203999383U (en) | Low-temperature decomposition and high temperature sintering all-in-one oven | |
| CN206444453U (en) | A kind of full load denitrating system | |
| CN204534546U (en) | Biomass boiler environmental protection and energy saving control system | |
| CN206467197U (en) | A kind of coke oven | |
| CN209558325U (en) | A kind of heating furnace flue gas recirculation burner | |
| CN207849356U (en) | A kind of efficient multi-chamber boiler-burner | |
| CN107166428A (en) | A kind of grate firing boiler flue gas oxygen content control system based on flue gas recirculation | |
| CN205919310U (en) | Boiler wind channel | |
| CN205774282U (en) | A kind of reduce the system of nitrogen oxides in coke oven exhaust gas | |
| CN109612091A (en) | A kind of biomass thermal wind furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |