CN209131426U - A kind of concurrent heating system of sintering device flue gas purification device - Google Patents
A kind of concurrent heating system of sintering device flue gas purification device Download PDFInfo
- Publication number
- CN209131426U CN209131426U CN201821786265.9U CN201821786265U CN209131426U CN 209131426 U CN209131426 U CN 209131426U CN 201821786265 U CN201821786265 U CN 201821786265U CN 209131426 U CN209131426 U CN 209131426U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- flue
- entrance
- outlet
- thermosistor
- 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
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a kind of concurrent heating systems of sintering device flue gas purification device, including flue gas conveying flue, GGH warming-up section, temperature adjustment fume extraction pipe, flue gas mixer entrance flue, flue gas thermosistor, flue gas mixer and SCR inlet flue before denitration；Flue gas conveying flue is connected with the entrance of GGH warming-up section before denitration, the outlet of GGH warming-up section is connected with the entrance of the entrance of temperature adjustment fume extraction pipe and flue gas mixer entrance flue, the outlet of temperature adjustment fume extraction pipe is connected with the entrance of flue gas thermosistor, the outlet of hot-blast stove is connected with the entrance of flue gas thermosistor, the outlet of flue gas thermosistor and the outlet of flue gas mixer entrance flue are connected with the entrance of flue gas mixer, the outlet of flue gas mixer is connected with SCR inlet flue, requirement of the system to smoke conveying duct after hot-blast stove and flue gas mixer material reduces, system run all right is higher.
Description
Technical field
The utility model belongs to filed of flue gas purification in steel-making industry, is related to a kind of concurrent heating of sintering device flue gas purification device
System.
Background technique
Since 2015, China promoted coal motor group minimum discharge to be transformed on a large scale.After transformation, the dioxy of coal-burning power plant
Changing sulphur, nitrogen oxides and soot emissions limit value reduces by 83%, 50% and 67% than national emission standard respectively, reaches plant gas
Emission level.Currently, national 50% or more unit completes transformation, China has built up global maximum clean and effective coal electricity system.
While coal electricity industry pollutant continues emission reduction, the requirement of minimum discharge has also expanded to non-electrical industry from power industry；Currently,
Continue emission reduction compared to coal electricity industry pollutant, non-electrical industry is increasing to China's disposal of pollutants accounting, wherein sulfur dioxide,
Nitrogen oxides, smoke-dust discharge amount account for the whole nation 3/4 or more.Steel, building materials, coloured, coalification, petrochemical industry, coking will be modified in the recent period
Etc. industries pollutant emission standard, the revision of standard will accelerate the atmosphere environment protection treating of non-electrical industry.
According to steel sintering, (the GB28662-2012 modification of the special emission limit of pelletizing industrial air pollution object discharge standard
Single exposure draft), specified in steel sintering machine sulfur dioxide emission limit be 50mg/m3, granular material discharged limit value
For 50mg/m3, emission limits of nitrogen oxides 100mg/m3." steel sintering, pelletizing industrial air pollution object discharge standard "
(GB28662-2012) modification is singly to issue in Chinese Ministry of Environmental Protection and on December 17th, 2013, is to " steel sintering, pelletizing industrial atmosphere
Pollutant emission standard " (GB28662-2012) supplement, in a standard increase the special emission limit of atmosphere pollution.It is put into effect
Purpose be the requirement to be worked according to national environmental protection, territorial development density is higher, environmental bearing capacity starts to weaken, or
Atmospheric environment capacity is smaller, ecological environment frailty, is easy to happen serious atmospheric problem of environmental pollution and needs to take special protection
The area of measure, the pollutant emission behavior of strict control enterprise, the atmosphere that the enterprise in above-mentioned area executes special provision are dirty
Contaminate the special emission limit of object.
Many enterprises of steel industry have completed or have implemented the transformation of environmental protection facility at present, new tighter to meet
The environmental protection standard requirement of lattice.The content of nitrogen oxides is about 350mg/m in sintering flue gas3, highest smoke temperature is about 180 DEG C, purification
NOx in flue gas needs the flue-gas temperature of SCR inlet to reach 300 DEG C or more, thus generally use GGH heat exchange recycling SCR after
Waste heat heating in flue gas, then use the hot-blast stove concurrent heating of burning blast furnace gas to reach flue-gas temperature and can satisfy SCR denitration
Temperature, but burn blast furnace gas hot-blast stove generate high-temperature flue gas at 1000 DEG C or more, directly added using high-temperature flue gas
When hot, high-temperature flue gas to be proposed very high requirement to conveyance conduit and flue gas mixer material, and in operational process easily
There is a situation where overtemperature deformation failures, influence the safe and stable operation of a whole set of sintering device flue gas purification device.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of sintering device flue gas purification dress
The concurrent heating system set, requirement of the system to smoke conveying duct after hot-blast stove and flue gas mixer material reduce, system operation
High stability.
In order to achieve the above objectives, before the concurrent heating system of sintering device flue gas purification device described in the utility model includes denitration
Flue gas conveys flue, GGH warming-up section, temperature adjustment fume extraction pipe, flue gas mixer entrance flue, flue gas thermosistor, flue gas mixing
Device and SCR inlet flue；
Flue gas conveying flue is connected with the entrance of GGH warming-up section before denitration, and the outlet of GGH warming-up section and temperature adjustment flue gas are taken out
The entrance of the entrance and flue gas mixer entrance flue that take pipe is connected, outlet and the flue gas thermosistor of temperature adjustment fume extraction pipe
Entrance is connected, and the outlet of hot-blast stove is connected with the entrance of flue gas thermosistor, the outlet of flue gas thermosistor and flue gas mixer
The outlet of gas approach is connected with the entrance of flue gas mixer, and the outlet of flue gas mixer is connected with SCR inlet flue.
It is connected between the outlet of hot-blast stove and the entrance of flue gas thermosistor by hot stove cigarette flue.
It is connected between the outlet of flue gas thermosistor and the entrance of flue gas mixer by hot stove cigarette flue after temperature adjustment.
The outlet of SCR inlet flue be sequentially communicated SCR denitration device, GGH temperature descending section gas approach, GGH temperature descending section and
Flue is discharged in flue gas after denitration.
The outlet of temperature adjustment fume extraction pipe is through temperature adjustment flue gas booster fan and temperature adjustment flue gas delivery pipe and flue gas thermosistor
Entrance is connected.
The entrance of hot-blast stove is communicated with combustion air delivery pipe and blast furnace gas delivery pipe.
The utility model has the following beneficial effects:
For the concurrent heating system of sintering device flue gas purification device described in the utility model when specific operation, GGH warming-up section is defeated
The sintering flue gas of non-denitration out is divided into two-way, wherein entered in flue gas mixer through flue gas mixer entrance flue all the way,
Another way is mixed in flue gas thermosistor with the high-temperature flue gas that hot-blast stove exports, and is entered back into flue gas mixer, is then led to
The mixing with the sintering flue gas of non-denitration is crossed, so that the flue-gas temperature of hot-blast stove output is reduced to by original 1000 DEG C or more
750 DEG C hereinafter, so that substantially reduce the requirement to hot-blast stove cigarette flue and flue gas mixer after temperature adjustment, to save the investment of equipment
Cost, while the stability and safety of system operation are improved, in addition, the utility model is exported using sintering flue gas and hot-blast stove
High-temperature flue gas mixed, avoid individually extracting air and cool down to high-temperature flue gas, to effectively reduce blast furnace gas
Consumption, improve system operation economy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Wherein, 1 it is flue gas conveying flue before denitration, 2 be GGH warming-up section, 3 be temperature adjustment fume extraction pipe, 4 is temperature adjustment flue gas
Booster fan, 5 be temperature adjustment flue gas delivery pipe, 6 be flue gas thermosistor, 7 be hot-blast stove, 8 be blast furnace gas delivery pipe, 9 be combustion-supporting
Air delivery pipe, 10 be hot stove cigarette flue, 11 be hot stove cigarette flue after temperature adjustment, 12 be flue gas mixer entrance flue, 13 be cigarette
Gas mixer, 14 be SCR inlet flue, 15 be SCR denitration device, 16 be GGH temperature descending section gas approach, 17 be GGH temperature descending section,
18 are discharged flue for flue gas after denitration.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing:
With reference to Fig. 1, the concurrent heating system of sintering device flue gas purification device described in the utility model include before denitration flue gas it is defeated
Send flue 1, GGH warming-up section 2, temperature adjustment fume extraction pipe 3, flue gas mixer entrance flue 12, flue gas thermosistor 6, flue gas mixing
Device 13 and SCR inlet flue 14；Flue gas conveying flue 1 is connected with the entrance of GGH warming-up section 2 before denitration, GGH warming-up section 2
Outlet is connected with the entrance of the entrance of temperature adjustment fume extraction pipe 3 and flue gas mixer entrance flue 12, temperature adjustment fume extraction pipe 3
Outlet be connected with the entrance of flue gas thermosistor 6, the outlet of hot-blast stove 7 is connected with the entrance of flue gas thermosistor 6, flue gas tune
The outlet of warm device 6 and the outlet of flue gas mixer entrance flue 12 are connected with the entrance of flue gas mixer 13, flue gas mixer
13 outlet is connected with SCR inlet flue 14.
It is connected between the outlet of hot-blast stove 7 and the entrance of flue gas thermosistor 6 by hot stove cigarette flue 10；Flue gas thermosistor
It is connected between 6 outlet and the entrance of flue gas mixer 13 by hot stove cigarette flue 11 after temperature adjustment；SCR inlet flue 14 goes out
Mouth has been sequentially communicated flue gas discharge flue after SCR denitration device 15, GGH temperature descending section gas approach 16, GGH temperature descending section 17 and denitration
18。
The outlet of temperature adjustment fume extraction pipe 3 is through temperature adjustment flue gas booster fan 4 and temperature adjustment flue gas delivery pipe 5 and flue gas thermosistor
6 entrance is connected；The entrance of hot-blast stove 7 is communicated with combustion air delivery pipe 9 and blast furnace gas delivery pipe 8.
The specific work process of the utility model are as follows:
The sintering flue gas of non-denitration is sent into GGH warming-up section 2, the sintering flue gas of non-denitration through flue gas conveying flue 1 before denitration
Enter in flue gas mixer entrance flue 12 and temperature adjustment fume extraction pipe 3 after the heating of GGH warming-up section 2, temperature adjustment fume extraction pipe 3
The sintering flue gas of the non-denitration of output enters flue gas thermosistor 6 through temperature adjustment flue gas booster fan 4 and temperature adjustment flue gas delivery pipe 5
In, the air that the blast furnace gas and combustion air delivery pipe 9 that blast furnace gas delivery pipe 8 is sent into are sent into burns production in hot-blast stove 7
Raw high-temperature flue gas, which is sent into flue gas thermosistor 6 through hot stove cigarette flue 10, in flue gas thermosistor 6, high-temperature flue gas
The sintering flue gas of non-denitration carries out mixed heat transfer, and then hot stove cigarette flue 11 is sent into flue gas mixer 13 after temperature adjustment, then
The sintering flue gas of the non-denitration exported in flue gas mixer 13 with flue gas mixer entrance flue 12 is mixed, and is then passed through
SCR inlet flue 14 enters in SCR denitration device 15, and the flue gas that SCR denitration device 15 exports is successively through GGH temperature descending section entrance
Flue gas is discharged in flue 18 after entering denitration after flue 16 and GGH temperature descending section 17.
Sintering flue gas after the heating exported through GGH warming-up section 2 is sent into flue gas thermosistor 6 by the utility model, is passed through
The sintering flue gas by the output high-temperature flue-gas of hot-blast stove 7 be down to 750 DEG C hereinafter, to reduce to hot stove cigarette flue 11 after temperature adjustment and
The material and thermal requirements of flue gas mixer 13 save equipment investment, improve the safety and stability of device operation, and benefit
Sintering flue gas after using heating not will increase the consumption of hot-blast stove blast furnace gas as tuning wind, with reduce the operation of device at
This.
Claims (6)
1. a kind of concurrent heating system of sintering device flue gas purification device, which is characterized in that including before denitration flue gas conveying flue (1),
GGH warming-up section (2), temperature adjustment fume extraction pipe (3), flue gas mixer entrance flue (12), flue gas thermosistor (6), flue gas mixing
Device (13) and SCR inlet flue (14)；
Flue gas conveying flue (1) is connected with the entrance of GGH warming-up section (2) before denitration, the outlet and temperature adjustment of GGH warming-up section (2)
The entrance of fume extraction pipe (3) and the entrance of flue gas mixer entrance flue (12) are connected, and temperature adjustment fume extraction pipe (3) goes out
Mouth is connected with the entrance of flue gas thermosistor (6), and the outlet of hot-blast stove (7) is connected with the entrance of flue gas thermosistor (6), flue gas
The outlet of thermosistor (6) and the outlet of flue gas mixer entrance flue (12) are connected with the entrance of flue gas mixer (13), cigarette
The outlet of gas mixer (13) is connected with SCR inlet flue (14).
2. the concurrent heating system of sintering device flue gas purification device according to claim 1, which is characterized in that hot-blast stove (7)
Outlet is connected between the entrance of flue gas thermosistor (6) by hot stove cigarette flue (10).
3. the concurrent heating system of sintering device flue gas purification device according to claim 1, which is characterized in that flue gas thermosistor
(6) it is connected between outlet and the entrance of flue gas mixer (13) by hot stove cigarette flue (11) after temperature adjustment.
4. the concurrent heating system of sintering device flue gas purification device according to claim 1, which is characterized in that SCR inlet flue
(14) outlet has been sequentially communicated SCR denitration device (15), GGH temperature descending section gas approach (16), GGH temperature descending section (17) and denitration
Flue gas discharge flue (18) afterwards.
5. the concurrent heating system of sintering device flue gas purification device according to claim 1, which is characterized in that temperature adjustment fume extraction
The outlet of pipe (3) is connected through temperature adjustment flue gas booster fan (4) and temperature adjustment flue gas delivery pipe (5) with the entrance of flue gas thermosistor (6)
It is logical.
6. the concurrent heating system of sintering device flue gas purification device according to claim 1, which is characterized in that hot-blast stove (7)
Entrance is communicated with combustion air delivery pipe (9) and blast furnace gas delivery pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786265.9U CN209131426U (en) | 2018-10-31 | 2018-10-31 | A kind of concurrent heating system of sintering device flue gas purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821786265.9U CN209131426U (en) | 2018-10-31 | 2018-10-31 | A kind of concurrent heating system of sintering device flue gas purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209131426U true CN209131426U (en) | 2019-07-19 |
Family
ID=67233644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821786265.9U Active CN209131426U (en) | 2018-10-31 | 2018-10-31 | A kind of concurrent heating system of sintering device flue gas purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209131426U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368811A (en) * | 2019-08-16 | 2019-10-25 | 北京首钢国际工程技术有限公司 | A kind of SCR denitration Smoke-heating device for wearing secondary mixed wind |
| CN111495133A (en) * | 2019-08-27 | 2020-08-07 | 河北中科朗博环保科技有限公司 | Ultralow emission system of sintering machine flue gas |
| CN111545056A (en) * | 2020-06-18 | 2020-08-18 | 西安西热锅炉环保工程有限公司 | Multistage air mixing device and method of sintering flue gas denitration system |
| CN112403181A (en) * | 2019-11-05 | 2021-02-26 | 中冶长天国际工程有限责任公司 | Flue gas desulfurization and denitrification treatment system and method |
-
2018
- 2018-10-31 CN CN201821786265.9U patent/CN209131426U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368811A (en) * | 2019-08-16 | 2019-10-25 | 北京首钢国际工程技术有限公司 | A kind of SCR denitration Smoke-heating device for wearing secondary mixed wind |
| CN111495133A (en) * | 2019-08-27 | 2020-08-07 | 河北中科朗博环保科技有限公司 | Ultralow emission system of sintering machine flue gas |
| CN112403181A (en) * | 2019-11-05 | 2021-02-26 | 中冶长天国际工程有限责任公司 | Flue gas desulfurization and denitrification treatment system and method |
| CN112403181B (en) * | 2019-11-05 | 2023-03-28 | 中冶长天国际工程有限责任公司 | Flue gas desulfurization and denitrification treatment system and method |
| CN111545056A (en) * | 2020-06-18 | 2020-08-18 | 西安西热锅炉环保工程有限公司 | Multistage air mixing device and method of sintering flue gas denitration system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209131426U (en) | A kind of concurrent heating system of sintering device flue gas purification device | |
| CN204254649U (en) | A kind of zero-emission no chimney coal-burning boiler system | |
| CN104764340A (en) | Flue gas circulation system and method for sintering machine flue gas recirculation denitration | |
| CN102258923A (en) | Method for recycling and reusing tail gas of calcium carbide furnace | |
| CN103196144B (en) | Pharmacy is solid, the innoxious comprehensive utilization of resources device and method of gas discarded object | |
| CN205191616U (en) | Novel clean flue gas heating device | |
| CN204619708U (en) | A kind of cement rotary kiln kiln gas combined denitration device | |
| CN103626409A (en) | Method and device for treatment in feeding household garbage into cement kiln in three routes | |
| CN203816509U (en) | Desulfuration and denitration system for low temperature coke oven exhaust | |
| CN110314543A (en) | Dirt arrangement SCR denitration device and technique in a kind of cement kiln | |
| CN203595119U (en) | Device capable of reducing nitric oxides in flue gas product of circulating fluidized bed boiler | |
| CN102563687A (en) | Oxygen-enriched combustion system | |
| CN205619331U (en) | Waste incineration flue gas environmental protection processing system | |
| CN110833763B (en) | Production process and equipment for organic flue gas incineration, desulfurization, dust removal and denitration | |
| CN108225037A (en) | The UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of a kind of electrolysis flue gas | |
| CN205156650U (en) | Comprehensive treatment system for flue gas of sintering plant | |
| CN207991293U (en) | A kind of UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas | |
| CN203582743U (en) | Three-way kiln inlet treatment device for cement kiln household garbage | |
| CN210752090U (en) | Dust arrangement SCR denitration device for cement kiln | |
| CN208906016U (en) | A kind of low temperature waste gas denitrification apparatus | |
| CN211514091U (en) | Production equipment for burning, desulfurizing, dedusting and denitrifying organic flue gas of industrial kiln | |
| CN206556023U (en) | The low nitrogen annealing device of discarded object | |
| CN111895799A (en) | Heating furnace waste gas multi-pollutant cooperative treatment system | |
| CN207351232U (en) | A kind of coking flue gas purification system | |
| CN207137667U (en) | A kind of reclamation of stack gas afterheat and the integrated apparatus of desulfurization |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |