CN103240014A - Flue gas mixing device - Google Patents
Flue gas mixing device Download PDFInfo
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- CN103240014A CN103240014A CN2013102150831A CN201310215083A CN103240014A CN 103240014 A CN103240014 A CN 103240014A CN 2013102150831 A CN2013102150831 A CN 2013102150831A CN 201310215083 A CN201310215083 A CN 201310215083A CN 103240014 A CN103240014 A CN 103240014A
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- flue gas
- mixing drum
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Abstract
The invention discloses a flue gas mixing device, which at least comprises a tangent inlet gas mixing cylinder, a mixing cylinder and a gas mixing inner cylinder which are coaxially arranged, wherein two ports of the inlet gas mixing cylinder in the axial direction are respectively connected to the end of a roof dust removal pipe and the gas inlet of the mixing cylinder through flanges; the inlet gas mixing cylinder is provided with a tangent gas inlet pipe which is communicated with the internal part of the inlet gas mixing cylinder in the tangent direction of the inlet gas mixing cylinder, and the tangent gas inlet pipe is connected with the high-temperature flue gas outlet end of a blast furnace; the mixing cylinder is provided with a gas inlet and a gas outlet; and the gas mixing inner cylinder is arranged in the mixing cylinder and a plurality of mixing blades are arranged on the outer wall of the gas mixing inner cylinder. The flue gas mixing device disclosed by the invention has the advantages that the structure is simple, the construction and the installation are convenient to conduct, the manufacturing and installation methods are similar to the manufacturing and installation methods of common roof hood flue gas pipes and the device does not require to occupy a separate area; and the flue gas mixing effect is good, the resistance of the device is small and the operating expense of a dust removal system is saved.
Description
Technical field
The present invention relates to a kind of blast furnace flue gas heat sink, relate in particular to a kind of be applicable to the iron and steel enterprise electric furnace produce in the flue gas mixing arrangement of furnace high-temperature flue gas and roof cover normal temperature flue gas hybrid cooling.
Background technology
In the industrial processes at present, relate to the pyrolytic semlting facility, in the industrial furnace production process, produce a large amount of high-temperature flue gas.As in iron and steel enterprise's steelmaking process, in the electric furnace smelting process, the furnace high-temperature flue gas of generation reaches 1300 ℃, and generally through after water-cooled flue, the cooling of wind-force cooler, flue-gas temperature still reaches more than 250 ℃; High-temperature flue gas purification about 250 ℃ generally has two kinds of purification schemes: the one, independent dust pelletizing system is set, and another scheme is after the flue gas that furnace high-temperature flue gas and roof cover etc. are located to discharge is mixed, and the dust pelletizing system of merging is set.
Arrange in the dust pelletizing system of merging at furnace high-temperature flue gas and roof cover flue gas, how to allow furnace high-temperature flue gas and roof cover flue gas evenly, the lower resistance loss mixes, is the place of design deficiency during a lot of engineerings are used.Common design is to adopt hybrid tower structure: the roof flue gas from the mixing column lower side to entering in the tower, the furnace high-temperature flue gas sucks from tower middle part tangential direction, two strands of flue gases mix in tower, rotation is to top of tower, discharge from the cat head pipeline, a conical ash bucket and star lock gas unloading valve are established in the tower bottom, and the bulky grain flue dust can settle down and regularly discharge in the inner flue gas of the stove.This tower is similar to vertical cyclone duster structure, two strands of flue gases all need through descending simultaneously, a plurality of elbows such as rising, flue gas forms eddy current easily in void tower, therefore this mixing column resistance is bigger, generally more than 700Pa, pipeline lengthens simultaneously, tower needs engaged position, the steel construction consumption is bigger, in actual motion, because the flue gas resistance of roof parts is only about 3000-3500Pa, and the resistance of smoke evacuation pipeline (disregarding mixing column) adds this tower resistance in the stove about 5000Pa, the resistance of whole dust-removal system need arrange about 5700-6000Pa, the dedusting fan total head is chosen in about 6500-6800Pa, and the dust pelletizing system energy consumption is very big, and smoke evacuation system is often poor because of the big smoke discharging effect of resistance in the stove.
Summary of the invention
At the problems referred to above, the object of the present invention is to provide flue gas mixing arrangement a kind of simple in structure, reliable.
For achieving the above object, a kind of flue gas mixing arrangement of the present invention comprises tangent line air intake mixing drum, mixing drum and the mixed wind inner core of coaxial setting, wherein at least;
Two ports of described air intake mixing drum on axis direction are connected in the air inlet of roof cleaning shaft end, mixing drum respectively by flange; Described air intake mixing drum tangential direction be provided with one with the tangent line intake stack of internal communication, described tangent line intake stack is connected in blast furnace high-temperature flue gas outlet side;
Described mixing drum is provided with air inlet and air outlet; Described mixing drum inside is provided with described mixed wind inner core, and described mixed wind inner tank theca is provided with a plurality of hybrid blades.
Preferably, the air inlet of described mixing drum adopts the reducer pipe structure, and the mouth of pipe of described reducer pipe connects the air intake mixing drum by flange.
Preferably, described mixed wind inner core profile adopts the bullet streamlined, and its bullet portion is towards the mixing drum air inlet.
Preferably, the air outlet of described mixing drum arranges a chimney fan.
Preferably, at the air-out position of described mixing drum pars infrasegmentalis ash bucket is set.
Preferably, the exit of described ash bucket is provided with star lock gas unloading valve, is provided with manual push-pull valve at star lock gas unloading valve; Bottom at ash bucket also is provided with manual access door.
Preferably, described hybrid blade adopts propeller blade.
Preferably, on described mixing drum, also be provided with inspection manhole.
Beneficial effect of the present invention is:
1, flue gas mixing arrangement of the present invention is simple in structure, construction install convenience, and the fabrication and installation close to common roof cover flue do not need independent occupation of land;
2, flue gas good mixing effect, device resistance is low, saves the dust pelletizing system operating cost;
3, can effectively remove big dust particle in the inner flue gas of the stove, prevent from burning filter bag;
4, the big dust particle that the terminal ash bucket that arranges of mixing arrangement can store collected regularly is transported to the utilization of dust pelletizing system ash-storing bin.
Description of drawings
Fig. 1 is the structural representation of the described flue gas mixing arrangement of the embodiment of the invention;
Fig. 2 is the right view of Fig. 1;
Fig. 3 is the left view of Fig. 1.
The specific embodiment
The present invention will be further described below in conjunction with Figure of description.
As shown in Figure 1-Figure 3, the described a kind of flue gas mixing arrangement of the embodiment of the invention comprises tangent line air intake mixing drum 2, mixing drum 1 and the mixed wind inner core 3 of coaxial setting, wherein at least;
Two ports of described air intake mixing drum on axis direction are connected in the air inlet of roof cleaning shaft end, mixing drum respectively by flange; Described air intake mixing drum tangential direction be provided with one with the tangent line intake stack 4 of internal communication, described tangent line intake stack is connected in blast furnace high-temperature flue gas outlet side;
Described mixing drum is provided with air inlet and air outlet 8, and wherein, the air outlet of described mixing drum arranges a chimney fan 7, and the air inlet of described mixing drum adopts the reducer pipe structure, and the mouth of pipe of described reducer pipe 6 connects the air intake mixing drum by flange; Described mixing drum inside is provided with described mixed wind inner core, and described mixed wind inner tank theca is provided with a plurality of hybrid blades 5, and described hybrid blade adopts propeller blade.
The tangent line intake stack of furnace high-temperature flue gas on the air intake mixing drum enters in the air intake mixing drum, and and the normal temperature flue gas under the hybrid blade turning effort that mixes on the wind inner core, evenly mix, mixed flue-gas temperature reduces, and the air outlet by mixing drum enters deduster and purifies.
Further explain as the embodiment of the invention:
Described mixed wind inner core profile adopts the bullet streamlined, and its bullet portion is towards the mixing drum air inlet.Take such design can reduce the air intake resistance.
At the air-out position of described mixing drum pars infrasegmentalis ash bucket 9 is set and is used for the store collected dust.Be provided with star lock gas unloading valve 10 in the exit of described ash bucket, regularly open unloading valve and unload ash, be transported to the utilization of dust pelletizing system ash-storing bin by burying the scraper ash-transmission machine then.When being provided with manual push-pull valve 11 for maintenance, star lock gas unloading valve cuts off; Also be provided with manual access door 12 in the bottom of ash bucket.On described mixing drum, also be provided with inspection manhole 13, be used for the air mixing device internal overhaul.
The course of work of the present invention is:
The high-temperature flue gas (about 250 ℃) of discharging in the electric furnace stove enters in the air intake mixing drum and with roof cover normal temperature flue gas by the tangent line intake stack and shunts through mixing the wind inner core, the mixed flow of the hybrid blade by the propeller blade shape is evenly mixed, mixed flue-gas temperature is lower than 110 ℃, enters deduster by air outlet and purifies.Big dust particle falls into the ash bucket storage at the eddy flow end in the inner flue gas of the stove, and star lock gas unloading valve regularly unloads ash, delivers to the utilization of dust pelletizing system ash-storing bin by the dust that buries scraper ash-transmission machine contribute sedimentation.
More than; only be preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim was defined.
Claims (8)
1. a flue gas mixing arrangement is characterized in that, comprises tangent line air intake mixing drum, mixing drum and the mixed wind inner core of coaxial setting at least, wherein;
Two ports of described air intake mixing drum on axis direction are connected in the air inlet of roof cleaning shaft end, mixing drum respectively by flange; Described air intake mixing drum tangential direction be provided with one with the tangent line intake stack of internal communication, described tangent line intake stack is connected in blast furnace high-temperature flue gas outlet side;
Described mixing drum is provided with air inlet and air outlet; Described mixing drum inside is provided with described mixed wind inner core, and described mixed wind inner tank theca is provided with a plurality of hybrid blades.
2. flue gas mixing arrangement according to claim 1 is characterized in that, the air inlet of described mixing drum adopts the reducer pipe structure, and the mouth of pipe of described reducer pipe connects the air intake mixing drum by flange.
3. flue gas mixing arrangement according to claim 1 is characterized in that, described mixed wind inner core profile adopts the bullet streamlined, and its bullet portion is towards the mixing drum air inlet.
4. flue gas mixing arrangement according to claim 1 is characterized in that, the air outlet of described mixing drum arranges a chimney fan.
5. flue gas mixing arrangement according to claim 1 is characterized in that, pars infrasegmentalis arranges ash bucket in the air-out position of described mixing drum.
6. flue gas mixing arrangement according to claim 5 is characterized in that, the exit of described ash bucket is provided with star lock gas unloading valve, is provided with manual push-pull valve at star lock gas unloading valve; Bottom at ash bucket also is provided with manual access door.
7. flue gas mixing arrangement according to claim 1 is characterized in that, described hybrid blade adopts propeller blade.
8. flue gas mixing arrangement according to claim 1 is characterized in that, also is provided with inspection manhole on described mixing drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215083.1A CN103240014B (en) | 2013-05-30 | 2013-05-30 | Flue gas mixing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310215083.1A CN103240014B (en) | 2013-05-30 | 2013-05-30 | Flue gas mixing arrangement |
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| CN103240014A true CN103240014A (en) | 2013-08-14 |
| CN103240014B CN103240014B (en) | 2015-09-02 |
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| CN201310215083.1A Active CN103240014B (en) | 2013-05-30 | 2013-05-30 | Flue gas mixing arrangement |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525009A (en) * | 2014-12-11 | 2015-04-22 | 北京京诚泽宇能源环保工程技术有限公司 | Flue gas mixed flow tower |
| CN104645845A (en) * | 2015-03-18 | 2015-05-27 | 魏伯卿 | Large/small-drift diameter pipe phase mixing pipeline mixer |
| CN105276996A (en) * | 2015-11-30 | 2016-01-27 | 中冶华天工程技术有限公司 | Flue gas circulation sintering air mixing system |
| CN110465213A (en) * | 2018-05-12 | 2019-11-19 | 中国石油化工股份有限公司 | Gas cyclone mixer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2060867U (en) * | 1989-08-30 | 1990-08-22 | 王力武 | Cyclone separator for spray furnace cap |
| CN2499610Y (en) * | 2001-05-28 | 2002-07-10 | 卜维平 | Induced fire-extinguish smoke exhaust blower of motor heat radiation system |
| CN201300019Y (en) * | 2008-11-18 | 2009-09-02 | 无锡红旗除尘设备有限公司 | Smoke steady flow collection drum |
| CN202638224U (en) * | 2011-12-26 | 2013-01-02 | 武汉都市环保工程技术股份有限公司 | Vertical-type swirl dedusting air mixer |
| CN202715368U (en) * | 2012-07-20 | 2013-02-06 | 宝山钢铁股份有限公司 | Flue gas mixer |
| CN103111224A (en) * | 2012-11-14 | 2013-05-22 | 辽宁省电力有限公司电力科学研究院 | Flash mixer |
-
2013
- 2013-05-30 CN CN201310215083.1A patent/CN103240014B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2060867U (en) * | 1989-08-30 | 1990-08-22 | 王力武 | Cyclone separator for spray furnace cap |
| CN2499610Y (en) * | 2001-05-28 | 2002-07-10 | 卜维平 | Induced fire-extinguish smoke exhaust blower of motor heat radiation system |
| CN201300019Y (en) * | 2008-11-18 | 2009-09-02 | 无锡红旗除尘设备有限公司 | Smoke steady flow collection drum |
| CN202638224U (en) * | 2011-12-26 | 2013-01-02 | 武汉都市环保工程技术股份有限公司 | Vertical-type swirl dedusting air mixer |
| CN202715368U (en) * | 2012-07-20 | 2013-02-06 | 宝山钢铁股份有限公司 | Flue gas mixer |
| CN103111224A (en) * | 2012-11-14 | 2013-05-22 | 辽宁省电力有限公司电力科学研究院 | Flash mixer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525009A (en) * | 2014-12-11 | 2015-04-22 | 北京京诚泽宇能源环保工程技术有限公司 | Flue gas mixed flow tower |
| CN104645845A (en) * | 2015-03-18 | 2015-05-27 | 魏伯卿 | Large/small-drift diameter pipe phase mixing pipeline mixer |
| CN105276996A (en) * | 2015-11-30 | 2016-01-27 | 中冶华天工程技术有限公司 | Flue gas circulation sintering air mixing system |
| CN110465213A (en) * | 2018-05-12 | 2019-11-19 | 中国石油化工股份有限公司 | Gas cyclone mixer |
| CN110465213B (en) * | 2018-05-12 | 2022-07-12 | 中国石油化工股份有限公司 | Gas cyclone mixer |
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| Publication number | Publication date |
|---|---|
| CN103240014B (en) | 2015-09-02 |
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