CN206721098U - A kind of coke oven combustion exhaust gas denitration device - Google Patents
A kind of coke oven combustion exhaust gas denitration device Download PDFInfo
- Publication number
- CN206721098U CN206721098U CN201720455643.4U CN201720455643U CN206721098U CN 206721098 U CN206721098 U CN 206721098U CN 201720455643 U CN201720455643 U CN 201720455643U CN 206721098 U CN206721098 U CN 206721098U
- Authority
- CN
- China
- Prior art keywords
- regenerator
- coke oven
- exhaust gas
- combustion chamber
- denitration device
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
This patent provides a kind of coke oven combustion exhaust gas denitration device, combustion chamber and carbonization chamber including some alternate connections, the regenerator of left and right two of an adjacent connection is sequentially provided with below each carbonization chamber, some gitter bricks are from bottom to top provided with the regenerator, formed with hot switching path between gitter brick, gas passage is provided between the regenerator and combustion chamber.This patent by above gitter brick, regenerator side and temperature range in the position of 1100 DEG C of ＜ t≤1300 DEG C, denitrfying agent injector is set, solve the problems, such as the denitration of coking industry burning waste gas；And because the physicochemical property for the denitrfying agent of coke oven exhaust gas denitration is neutral or weakly acidic pH, liquid, compared with traditional alkalescence or strong basicity, gaseous state denitrfying agent, there is safe, non-corrosiveness, the beneficial effect that jet length is long, scope is wide.
Description
Technical field
This patent is related to the technical field of coke oven exhaust gas denitration, and in particular to a kind of coke oven combustion exhaust gas denitration device.
Background technology
Coking industry is widely used in steel in China in occupation of very important status, its coke chemicals produced all the time
In the industries such as iron industry, casting industry, chemical industry, medical industry, refractory industry and national defense industry, but coking industry exists
During producing refining coke product, the largely waste gas containing oxynitrides can be produced, if waste gas directly discharges in atmosphere,
Harm can be caused to the living environment of people and other animals and plants, and then give ball ecological environment and human social economy's all bands
Come serious influence and destruction.So the task of top priority that denitration process is modern coking industry is carried out to the burning waste gas of coke oven.
To solve the problems, such as the denitration of coke oven combustion waste gas, number of patent application is 201410841602.X Chinese patent《One
Kind coke oven combustion exhaust gas denitration system and method》A kind of coke oven combustion exhaust gas denitration system and method is disclosed, it stores in coke oven
Hot indoor temperature is to be provided with reducing agent jetting device in 850-1100 DEG C of region, and the reducing agent jetting device passes through connection
Pipeline is connected with the reducing agent storage device outside coke oven regenerator, and the connecting pipe is provided with the first stop valve.During work
The reducing agent jetting device is by spraying reductant into coke oven regenerator, the reaction of nitrogen oxides with coke oven combustion waste gas,
And then realize the denitration of coke oven combustion waste gas.
Because the reducing agent jetting device of this technical scheme is to be located at the area that temperature in coke oven regenerator is 850-1100 DEG C
In domain, but in fact, it is the region of the full gitter brick of arrangement that accumulation of heat indoor temperature, which is 850-1100 DEG C of region, since it is considered that
The injection and diffusion of reducing agent need space, and directly reducing agent is sprayed onto above gitter brick and gitter brick can be caused damage
Problem, so reducing agent jetting device can not be set in gitter brick arrangement area.Therefore its temperature in coke oven regenerator is
The technical scheme that reducing agent jetting device is set in 850-1100 DEG C of region is infeasible.
In addition, the reducing agent that uses of this technical scheme for ammonia gas or belongs to strong alkaline substance containing ammonia liquid, to furnace wall and
Regenerator has severe corrosive, causes the coke oven life-span to greatly shorten.Furthermore if using ammonia gas, because gaseous ammonia is very
Difficult long-range injection, so its jeting effect is bad.
The content of the invention
To overcome at least one deficiency described in above-mentioned prior art, this patent provides a kind of gitter brick in coke oven
Top, the position of 1100 DEG C of ＜ t≤1300 DEG C in regenerator side and temperature, it is provided for injection neutrality, the spray of liquid denitrfying agent
The coke oven combustion exhaust gas denitration device of emitter, compared with prior art, have that denitration technology is easy to implement, denitrfying agent has safely
Effect, the advantages of denitration effect is more preferable.
To realize the purpose of this patent, it is achieved using following technical scheme：
A kind of coke oven combustion exhaust gas denitration device, including the combustion chamber of some alternate settings and carbonization chamber, each carbonization chamber
Lower section is provided with the adjacent regenerator of left and right two, and some gitter bricks are from bottom to top provided with the regenerator, and between gitter brick
Formed with hot switching path, gas passage, the gitter brick top, regenerator side are provided between the regenerator and combustion chamber
Face and temperature range are provided with the position of 1100 DEG C of ＜ t≤1300 DEG C to be used to spray neutral or weakly acidic pH, the spray of liquid denitrfying agent
Emitter.
In coke oven combustion exhaust gas denitration device, combustion chamber is mainly used in the fuel gas such as coal gas that burn so that combustion chamber
Temperature raises, and produces substantial amounts of heat；And carbonization chamber is connected with combustion chamber, centre is separated by the material of fire resisting, and heat can lead to
Cross heat exchange pattern and pass to carbonization chamber.Carbonization chamber is the space of a sealing, and the inside does not have air, but is deposited for refining
The coking coal raw material of coke, raw material boil in a covered pot over a slow fire thermosetting coke at high temperature.
While gas-fired produces amount of heat in combustion chamber, also generate containing a large amount of useless containing oxynitrides
Gas, waste gas entered above gitter brick in regenerator by the exhaust steam passage between combustion chamber and regenerator, now waste gas
Temperature is between 1100 DEG C of ＜ t≤1300 DEG C, so above gitter brick, 1100 DEG C of ＜ t≤1300 in regenerator side and temperature
DEG C position, be provided for that injection is neutral, the injector of liquid denitrfying agent.Injector sprays denitrfying agent, and denitrfying agent exists with waste gas
Redox denitration reaction occurs in the temperature range of 1100 DEG C of ＜ t≤1300 DEG C, nitrogen oxides is reduced to nitrogen, so as to real
Existing denitration.High-temp waste gas after denitration process passes through gitter brick, and heat is absorbed by gitter brick, and EGT reduces, and most passes through afterwards
Gitter brick hot switching path is discharged.Hot switching path of the air through regenerator enters regenerator, then through regenerator and combustion chamber
Between gas passage enter combustion chamber, provide oxygen for the burning of combustion chamber.
Further, the shape of the injector injection includes fan-shaped, taper and cylindricality.
Staff can be according to the injector of specific regenerator spatial choice suitable shape, the accumulation of heat typically in coke oven
Room space can be smaller, selects the jeting effect of the injector of cylindricality preferable.
Further, the eject position of the injector is from the gitter brick top to the regenerator top surface space
Between the 25%-75% of height.
Mounting distance of the injector on regenerator side is too high or too low, can all not cover injector below or above
Most of waste gas so that the denitration efficiency of waste gas is not high.
Further, the injector is arranged on from the gitter brick top to the regenerator top surface spatial altitude
Between 40%-60%.
Further, two regenerator in the left and right pass through the adjacent combustion in the corresponding carbonization chamber both sides of gas passage respectively
Burn room connection, the left regenerator and the previous combustion chamber of corresponding carbonization chamber, the right regenerator and corresponding charcoal
Change the latter combustion chamber of room.
Because regenerator is located at below corresponding carbonization chamber, the waste gas in combustion chamber passes through between regenerator and combustion chamber
Gas passage is discharged, and air enters combustion chamber by the gas passage between regenerator and combustion chamber, so the gas passage
The combustion chamber on the adjacent both sides of corresponding carbonization chamber respectively.
Further, the left regenerator and right regenerator are symmetrical structure, and alternate connection successively, the combustion chamber with
Connected between regenerator by gas passage.
Because being provided with two rows gas passage arranged side by side in combustion chamber, a gas passage is used to be passed through the combustion of air-breathing material
Burn；Another gas passage is used to discharge waste gas, and the air that fuel combustion needs enters combustion chamber by the gas passage of regenerator,
Another gas passage discharge regenerator of the waste gas caused by fuel combustion through combustion chamber.So some combustion chambers pass through respectively
Regenerator connection below a gas passage carbonization chamber adjacent thereto.
Compared with the prior art, this patent has following beneficial effect：This patent passes through above gitter brick, regenerator side
The position of 1100 DEG C of ＜ t≤1300 DEG C in face and temperature sets denitrfying agent injector, solves the denitration of coking industry coke oven exhaust gas
Problem；And because the physicochemical property for the denitrfying agent of coke oven exhaust gas denitration is neutral or weakly acidic pH, liquid, with traditional alkali
Property or strong basicity, gaseous state denitrfying agent compare, have that security is higher, non-corrosiveness, jet length is longer, scope is wider, denitration
The more preferable beneficial effect of effect.
Brief description of the drawings
Fig. 1 is the apparatus structure schematic diagram of this patent.
Wherein reference is：Combustion chamber 1, carbonization chamber 2, regenerator 3, left regenerator 31, right accumulation of heat 32, gas passage 4,
Injector 5, hot switching path 6.
Embodiment
To make the purpose, technical scheme and advantage of this patent clearer, below in conjunction with the accompanying drawings to this patent embodiment
It is described in more detail.
Embodiment
As shown in figure 1, a kind of coke oven combustion exhaust gas denitration device, including the combustion chamber 1 of some alternate connections and carbonization chamber
2, some lower sections of carbonization chamber 2 are sequentially provided with the regenerator of left and right two of an adjacent connection, respectively left regenerator 31 and the right side
Regenerator 32, some gitter bricks are from bottom to top provided with the regenerator 3, and formed with hot switching path 6, institute between gitter brick
State and gas passage 4 is provided between regenerator 3 and combustion chamber 1,1100 DEG C of gitter brick top, the side of regenerator 3 and the temperature
The position of ＜ t≤1300 DEG C, provided with for spraying neutral or weakly acidic pH, the injector 5 of liquid denitrfying agent.
Wherein injector 5 selects the cylindrical injector of spray configuration, because the space of regenerator 3 in coking furnace is smaller,
Cylindrical injector is enough to cover largely to be come out from gas passage 4, into the waste gas of the top of regenerator 3, and during injection
The gitter brick that will not be ejected into regenerator 3.Meanwhile because the space of regenerator 3 is smaller, only need to be in left regenerator 31 and right accumulation of heat
The side of room 32 is respectively installed by one injector 5.Denitrfying agent to eject injector 5 is fully utilized, spray
Emitter 5 is arranged on from the gitter brick top to the 40%-60% of the top surface spatial altitude of regenerator 3.
Because when waste gas is out entered above regenerator 3 from combustion chamber 1, temperature is typically between 1100~1300 DEG C, institute
It is arranged on injector 5 above the gitter brick, the position of 1100 DEG C of ＜ t≤1300 DEG C in the side of regenerator 3 and temperature, and will
Selection denitrfying agent higher to coke oven exhaust gas denitration efficiency in this temperature range.What the present embodiment was selected is the green China's environmental protection in Guangzhou
The denitrfying agent of Science and Technology Ltd.'s development ＆ production, model HSR-1/2/3, it still has good denitration effect at high temperature,
And it is neutral or weakly acidic pH (pH value 6-9), liquid state, has and is not easy to cause corrosion impact to equipment and is taken off relative to gaseous state
The wider array of advantage of spray regime of nitre agent.
A kind of coke oven combustion exhaust gas denitration method suitable for a kind of above-mentioned coke oven combustion exhaust gas denitration device, its denitration
Step includes：
S1:The air being passed through in left regenerator 31, air is by the gitter brick hot switching path in left regenerator 31, quilt
Gitter brick is preheated, temperature rise, and the heat on gitter brick is pulled away, and temperature reduces；
S2:Air after preheating into combustion chamber 1, burns in combustion chamber 1 by gas passage 4, produces amount of heat
And waste gas；
S3:The heat of combustion chamber 1 is delivered to adjacent carbonization chamber 2 by way of heat transfer so that Jiao in carbonization chamber 2
Coal raw material refining coke by way of coking；
S4:High-temp waste gas enters right regenerator 32 by gas passage 4 caused by burning in combustion chamber 1, is arranged on accumulation of heat
Injector 5 above brick sprays denitrfying agent, and waste gas carries out denitration reaction in the presence of denitrfying agent；
S5：Waste gas flows through the gitter brick in right regenerator 32 after denitration reaction, heat exchange is carried out with gitter brick, by big portion
After dividing heat transfer to gitter brick, discharged through gitter brick hot switching path, into flue.
As shown in figure 1, air direction of arrow along figure enters right regenerator 32, gitter brick is handed over by heat in right regenerator 32
Change passage 6 and transfer heat to air, the temperature rise of air, enter combustion chamber 1 by gas passage 4, combustion gas is in combustion chamber 1
Interior and fuel combustion, air provide comburant oxygen.Two row's passages are provided with combustion chamber 1, passage of the fuel on the left side of combustion chamber 1 fires
After burning, caused high-temp waste gas is discharged by the passage on the right, and the high-temp waste gas of discharge is by gas passage 4, into left accumulation of heat
Room 31.Combustion chamber 1 burn caused by a heat part taken away by waste gas, another part be used to smouldering coal in carbonization chamber 2 is former
Material, carbonization chamber 2 are the space of a sealing, and coal raw material carbonizes at high temperature, forms coke.Waste gas enters left by gas passage 4
The middle and upper part of regenerator 31, temperature is about at 1100 DEG C~1300 DEG C, and injector 5 is to exhaust blast denitrfying agent, waste gas and denitrfying agent
Generation denitration reaction, reach the purpose of exhaust gas denitration.Discharged again through hot switching path 6 after exhaust gas denitration, the heat on waste gas passes
Pass gitter brick, the temperature rise of gitter brick so that the EGT of discharge reduces, and mitigates the harm to caused by environment.
In the present embodiment, left regenerator 31 and right regenerator 32 are symmetrical structure, and every 30 minutes, air and waste gas was on a left side
Being passed through in right two regenerator is exchanged once with discharge direction by self-checking device.After i.e. 30 minutes, waste gas is by original
Discharge mutually to change into from right regenerator 32 by left regenerator 31 and discharge, air is mutually changed into from a left side by being passed through originally from right regenerator 32
Regenerator 31 is passed through.After 30 minutes, the circulating direction of waste gas and air gains original operative orientation again, the like.
Claims (6)
1. a kind of coke oven combustion exhaust gas denitration device, including the combustion chamber of some alternate settings and carbonization chamber, under each carbonization chamber
Side is provided with the adjacent regenerator of left and right two, is from bottom to top provided with some gitter bricks in the regenerator, is formed between gitter brick
There is hot switching path, it is characterised in that gas passage is provided between the regenerator and combustion chamber, the gitter brick top, is stored
Hot cell side and temperature range are provided with the position of 1100 DEG C of ＜ t≤1300 DEG C to be used to spray neutral or weakly acidic pH, liquid denitration
The injector of agent.
2. a kind of coke oven combustion exhaust gas denitration device according to claim 1, it is characterised in that the injector injection
Shape includes fan-shaped, taper and cylindricality.
A kind of 3. coke oven combustion exhaust gas denitration device according to claim 1, it is characterised in that the injection of the injector
Position is from the gitter brick top to the 25%-75% of the regenerator top surface spatial altitude.
4. a kind of coke oven combustion exhaust gas denitration device according to claim 3, it is characterised in that the injector is arranged on
From the gitter brick top to the 40%-60% of the regenerator top surface spatial altitude.
A kind of 5. coke oven combustion exhaust gas denitration device according to claim 1, it is characterised in that two accumulation of heats in the left and right
Room passes through the adjacent combustion chamber in the corresponding carbonization chamber both sides of gas passage, the left regenerator and corresponding charing respectively
The previous combustion chamber of room, the right regenerator and the latter combustion chamber of corresponding carbonization chamber.
6. a kind of coke oven combustion exhaust gas denitration device according to claim 1, it is characterised in that the left regenerator and the right side
Regenerator is symmetrical structure, and alternate connection successively, passes through gas passage and air communication between the combustion chamber and regenerator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720455643.4U CN206721098U (en) | 2017-04-27 | 2017-04-27 | A kind of coke oven combustion exhaust gas denitration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720455643.4U CN206721098U (en) | 2017-04-27 | 2017-04-27 | A kind of coke oven combustion exhaust gas denitration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206721098U true CN206721098U (en) | 2017-12-08 |
Family
ID=60508309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720455643.4U Withdrawn - After Issue CN206721098U (en) | 2017-04-27 | 2017-04-27 | A kind of coke oven combustion exhaust gas denitration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206721098U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893602A (en) * | 2017-04-27 | 2017-06-27 | 广州绿华环保科技有限公司 | A kind of coke oven combustion exhaust gas denitration device and its method of denitration |
| CN108744917A (en) * | 2018-06-12 | 2018-11-06 | 王鹏 | A kind of industrial waste gas SCR treatment process |
| CN108786444A (en) * | 2018-06-12 | 2018-11-13 | 王鹏 | A kind of SCR denitration device with circulatory function |
-
2017
- 2017-04-27 CN CN201720455643.4U patent/CN206721098U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106893602A (en) * | 2017-04-27 | 2017-06-27 | 广州绿华环保科技有限公司 | A kind of coke oven combustion exhaust gas denitration device and its method of denitration |
| CN106893602B (en) * | 2017-04-27 | 2022-12-30 | 广州绿华环保科技股份有限公司 | Coke oven combustion waste gas denitration device and denitration method thereof |
| CN108744917A (en) * | 2018-06-12 | 2018-11-06 | 王鹏 | A kind of industrial waste gas SCR treatment process |
| CN108786444A (en) * | 2018-06-12 | 2018-11-13 | 王鹏 | A kind of SCR denitration device with circulatory function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206721098U (en) | A kind of coke oven combustion exhaust gas denitration device | |
| KR101685735B1 (en) | Method for reducing nitrogen oxides from the exhaust gas of a coke oven | |
| CN111306564A (en) | Sintering flue gas denitration direct-fired heating device and method | |
| CN205402751U (en) | Waste gas incinerator | |
| CN106524166B (en) | Heat accumulating type denitration burner | |
| CN106893602A (en) | A kind of coke oven combustion exhaust gas denitration device and its method of denitration | |
| CN110160038B (en) | Semi-gasification combustion pressure-bearing boiler for biomass briquette | |
| CN204438101U (en) | A kind of boiler opposed firing structure | |
| CN213037672U (en) | Beam kiln for producing lime | |
| CN102626589B (en) | SNCR (Selective Non Catalytic Reduction) denitrification gun spraying system of large boiler and use method thereof | |
| CN106994299A (en) | A kind of single channel denitration of glass furnace fume device and its method of denitration | |
| CN207042228U (en) | A kind of single channel denitration of glass furnace fume device | |
| CN105271842A (en) | Method for calcining active lime by use of mixed gas in lime sleeve kiln | |
| CN209352936U (en) | Energy-saving white-removing equipment for blast furnace slag granulation | |
| CN105536487A (en) | Multi-point injected ammonia water atomization reduction method for reducing NOx discharge of gas-fired boiler | |
| CN208791706U (en) | A kind of aluminium volume annealing furnace | |
| CN207132722U (en) | A kind of ring type calcining kiln | |
| CN205957160U (en) | Hot flue gas ignition of boiler | |
| CN105222150A (en) | A kind of mist vapour mixing arrangement reducing NOx emission | |
| CN108654352A (en) | A kind of denitrating system of suitable biomass boiler | |
| CN104595891A (en) | Opposed firing structure of boiler | |
| CN104109541A (en) | Low-moisture coke quenching box and coke quenching method using same | |
| CN205223021U (en) | Internal combustion room fluted roller lime shaft furnace | |
| CN205495327U (en) | SNCR denitrification facility of pyrolysis furnace flue gas | |
| CN202322648U (en) | Middle burning beam used for vertical furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room A209 and A210 of Guangzhou International Business Incubator, No. 3, Juquan Road, Science City, Huangpu District, Guangzhou, Guangdong 510700 (office only) Patentee after: Guangzhou LvHua Environmental Protection Technology Co.,Ltd. Address before: Room A204, Zone A, Guangzhou International Business Incubator, No. 3, Juquan Road, Guangzhou Hi tech Industrial Development Zone, Guangdong 510663 Patentee before: GUANGZHOU GREEN SPLENDID ENVIROMENT SCIENCE AND TECHNOLOGY Co.,Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171208 Effective date of abandoning: 20221230 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20171208 Effective date of abandoning: 20221230 |