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
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- 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
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- flue gas
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- thermosistor
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 139
- 239000003546 flue gas Substances 0.000 title claims abstract description 139
- 238000005245 sintering Methods 0.000 title claims abstract description 31
- 238000010438 heat treatment Methods 0.000 title claims abstract description 19
- 238000000746 purification Methods 0.000 title claims abstract description 17
- 238000000605 extraction Methods 0.000 claims abstract description 17
- 239000003517 fume Substances 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 18
- 235000019504 cigarettes Nutrition 0.000 claims description 14
- 238000013459 approach Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 4
- 239000000779 smoke Substances 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005453 pelletization Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000003915 air pollution Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 208000036119 Frailty Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 206010003549 asthenia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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- 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 |
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| Publication Number | Publication Date |
|---|---|
| CN209131426U true CN209131426U (en) | 2019-07-19 |
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| CN201821786265.9U Active CN209131426U (en) | 2018-10-31 | 2018-10-31 | A kind of concurrent heating system of sintering device flue gas purification device |
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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 |
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