CN103913071A - Metallurgical slag flue gas treatment process - Google Patents
Metallurgical slag flue gas treatment process Download PDFInfo
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- CN103913071A CN103913071A CN201310005304.2A CN201310005304A CN103913071A CN 103913071 A CN103913071 A CN 103913071A CN 201310005304 A CN201310005304 A CN 201310005304A CN 103913071 A CN103913071 A CN 103913071A
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- flue gas
- water
- slag
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- air filter
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to a metallurgical slag gas treatment process. The process comprises the following steps: (1) collecting a large amount of flue gas produced after slag produced by a smelting furnace enters a slag cooling pond by using a smoke dust cover, and feeding the collected flue gas into a dust removing device through a fan; (2) atomizing the smoke dust entering the dust removing device through a first-order water charging atomizer to remove a large amount of particular smoke dust, feeding flue gas steam into a condenser for cooling to decompose the steam into clean gas and water, feeding the gas into an air filter, and feeding normal-temperature water into the air filter through a second-order water charging atomizer for humidifying and cooling once again; (3) feeding water decomposed by the condenser into a water return pond through a hydrophobic valve to be combined with return water in the dust removing device, and feeding into a cold slag pond through a discharge valve. The metallurgical slag flue gas treatment process has the beneficial effects that flue gas produced in a slag-smelting process in the smelting industry is removed completely, and the process has the advantages of small investment, high efficiency, energy saving, emission reduction, small floor area, low energy consumption and reusability of recycled water.
Description
Technical field
The furnace that the present invention relates to metallurgical industry carries out thermalization melting to metal, after completing, thermalization need the slag to producing to discharge also cooling, in last cooling procedure, produce the process treatment process of a large amount of flue gas steam, relate in particular to a kind of metallurgical slag flue gas treating process.
Background technology
Existing general cooling of furnace slag equipment by casing, be located at spiral promoting shaft in casing, be located at slag notch below slag inlet, the casing above casing, drive power source that spiral promoting shaft rotates and driving member, cooling of furnace slag mechanism forms.Current metallurgy industry furnace is mainly taked water soluble method to cooling of furnace slag, that is: the slag that furnace produces enters water cooling pond by slagging chute, by grab bucket, cold slag is picked up after cooling, then deposits by shipping tool carrier to appointed place.In this process, cold slag bath can produce a large amount of water vapours and flue gas, and this can have a strong impact on plant environment, if there is office operation, smog directly affects operating personnel's sight line, and production safety is caused to very big hidden danger, meanwhile, the production equipment life-span also can be affected indirectly.For overcoming the above problems, need to carry out integrated treatment to flue gas etc., accomplish the object of safety in production, renovating environment.
Summary of the invention
For above defect, the invention provides that a kind of floor space is few, being convenient to installation and maintenance, recirculated water can recycling, energy-saving and emission-reducing, cost are lower, can effectively control the metallurgical slag flue gas treating process of technique to environment, to solve many deficiencies of prior art.
For achieving the above object, the present invention is by the following technical solutions:
A kind of metallurgical slag flue gas treating process, mainly comprises the following steps:
(1) first, cold slag bath, flue dust cover, blower fan three are connected successively, a large amount of flue gases that the slag that furnace is produced produces after chute enters cold slag bath are collected by flue dust cover, again in fume treatment auxiliary of blower fan outer setting, this equipment is by air filter and the upper and lower two parts of de-dirt device form and this air filter is divided into upper and lower double-layer structure, and the flue gas of being collected by flue dust cover is sent into de-dirt device by blower fan;
(2) then, in two water inlet atomizers of fume treatment auxiliary outer setting, be single order water inlet atomizer and second order water inlet atomizer, intake atomizer to entering the flue dust atomization of de-dirt device by single order, this process is removed most of graininess flue dust, formation temperature is the steam of 600-1200 ℃, after processing under centrifugal action, flue gas steam is sent into and is positioned at flue gas and processes the processing of lowering the temperature of the external condensation device of a side, steam is decomposed into clean gas and water by this condenser, gas enters air filter, normal-temperature water by second order intake atomizer enter air filter to gas again carry out humidification and cooling, water after cooling enters de-dirt device discharge by the filter course of air filter bottom,
(3) last, the water that condenser decomposes out enters back pool by drain valve two and de-dirt device backwater merges, and enters cold slag bath through drain valve.
Between condenser and drain valve two, condensation radiator is installed; Described single order water inlet atomizer is arranged on the air inlet center position of fume treatment auxiliary outside or the position higher than air inlet position 100-200mm; The flue gas that enters de-dirt device is that tangential direction enters, and the gas that self cooling condenser out enters air filter is that tangential direction enters.
Compared with prior art, the beneficial effect of metallurgical slag flue gas treating process of the present invention is:
(1) combine by the structure of de-dirt device, air filter, two water inlet atomizers, make integrated artistic equipment be conducive to thoroughly solve the flue gas producing in smelting industry slag process, there is the advantages such as small investment, efficiency are high, energy-saving and emission-reducing;
(2) little, the energy consumption consumption of floor space less, recirculated water can reuse;
(3) cooling is very fast, and cold slag bath is effectively supplemented to temperature lowering water, thereby can reduce the use amount of water, can fill up metallurgical slag and melt smoke gas treatment blank.
Accompanying drawing explanation
With reference to the accompanying drawings the present invention is described in further detail below.
Fig. 1 is the handling process schematic diagram of metallurgical slag flue gas treating process described in the embodiment of the present invention.
In figure:
1, cold slag bath; 2, flue dust cover; 3, blower fan; 4, de-dirt device; 5, single order water inlet atomizer; 6, condenser; 7, condensation radiator; 8, air filter; 9, second order water inlet atomizer; 10, drain valve one; 11, drain valve two; 12, back pool; 13, drain valve.
The specific embodiment
As shown in Figure 1, the metallurgical slag flue gas treating process described in the embodiment of the present invention, its key step comprises following:
(1) first, cold slag bath 1, flue dust cover 2, blower fan 3 threes are connected successively, a large amount of flue gases that the slag that furnace is produced produces after chute enters cold slag bath 1 are collected by flue dust cover 2, again in fume treatment auxiliary of blower fan 3 outer setting, this equipment by air filter 8 and de-dirt device 4 Shang Xia two parts form and this air filter 8 is divided into upper and lower double-layer structure, the flue gas of being collected by flue dust cover 2 is sent into flue dust to take off dirt device 4 by blower fan 3;
(2) in two water inlet atomizers of fume treatment auxiliary outer setting, be single order water inlet atomizer 5 and second order water inlet atomizer 9, intake atomizer 5 to entering the flue dust atomization of de-dirt device 4 by single order, this process is removed most of graininess flue dust, formation temperature is the steam of 600-1200 ℃, after processing under centrifugal action, flue gas steam is sent into and is positioned at flue gas and processes the processing of lowering the temperature of the external condensation device 6 of a side, steam is decomposed into clean gas and water by this condenser 6, gas enters air filter 8, normal-temperature water by second order intake atomizer 9 enter air filter 8 to gas again carry out humidification and cooling, water after cooling enters de-dirt device 4 discharge by the filter course of air filter 8 bottoms,
(3) bottom filter layers of air filter 8 has pressure release and filtration, hydrophobic function, and the water that condenser 6 decomposes out enters back pool 12 by drain valve 2 11 and merges with de-dirt device 4 backwater, enters cold slag bath 1 through drain valve 13.
Metallurgical slag flue gas treating process described in the above embodiment of the present invention, a complete set of process system is opened and closed and operation by PLC electric control gear completion system; All the other main technique settings also comprise:
(1) drain valve 1 of extra installation between de-dirt device 4 and back pool 12 is installed condensation radiator 7 between condenser 6 and drain valve 2 11;
(2) described single order water inlet atomizer 5 is arranged on air inlet center position or the position higher than air inlet position 100-200mm, and atomizer horizontal positioned or 900 placements, and atomization angle is 1200,1600,900, and atomizing type is hollow atomization;
(3) system normal-temperature water used can be systemic circulation water, also can be the outer source of clean water of system, in equipment, flue gas enters de-dirt device 4 and enters for tangent line, it is that tangent line enters that condenser 6 gas out enters air filter 8 modes, air filter 8 can be divided into three kinds of forms, be respectively single layer filter, double medium filtration and three layer filtration, basis is filtered into the recessed formula filtering layer in bottom, recessed formula filtering layer center is lower water passage, can make water in air filter 8 by and enter de-dirt device 4, recessed formula filtering layer is semi-open-type, and part, bottom is with ventilation dividing plate.
Above embodiment is the more preferably one of the specific embodiment of the present invention, and the common variation that those skilled in the art carry out within the scope of the technical program and replacement should be included in protection scope of the present invention.
Claims (4)
1. a metallurgical slag flue gas treating process, is characterized in that, mainly comprises the following steps:
(1) first, cold slag bath, flue dust cover, blower fan three are connected successively, a large amount of flue gases that the slag that furnace is produced produces after chute enters cold slag bath are collected by flue dust cover, again in fume treatment auxiliary of blower fan outer setting, this equipment is by air filter and the upper and lower two parts of de-dirt device form and this air filter is divided into upper and lower double-layer structure, and the flue gas of being collected by flue dust cover is sent into de-dirt device by blower fan;
(2) then, in two water inlet atomizers of fume treatment auxiliary outer setting, be single order water inlet atomizer and second order water inlet atomizer, intake atomizer to entering the flue dust atomization of de-dirt device by single order, this process is removed most of graininess flue dust, formation temperature is the steam of 600-1200 ℃, after processing under centrifugal action, flue gas steam is sent into and is positioned at flue gas and processes the processing of lowering the temperature of the external condensation device of a side, steam is decomposed into clean gas and water by this condenser, gas enters air filter, normal-temperature water by second order intake atomizer enter air filter to gas again carry out humidification and cooling, water after cooling enters de-dirt device discharge by the filter course of air filter bottom,
(3) last, the water that condenser decomposes out enters back pool by drain valve two and de-dirt device backwater merges, and enters cold slag bath through drain valve.
2. metallurgical slag flue gas treating process according to claim 1, is characterized in that: between condenser and drain valve two, condensation radiator is installed.
3. metallurgical slag flue gas treating process according to claim 1, is characterized in that: described single order water inlet atomizer is arranged on the air inlet center position of fume treatment auxiliary outside or the position higher than air inlet position 100-200mm.
4. metallurgical slag flue gas treating process according to claim 1, is characterized in that: the flue gas that enters de-dirt device is that tangential direction enters, and the gas that self cooling condenser out enters air filter is that tangential direction enters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310005304.2A CN103913071A (en) | 2013-01-08 | 2013-01-08 | Metallurgical slag flue gas treatment process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310005304.2A CN103913071A (en) | 2013-01-08 | 2013-01-08 | Metallurgical slag flue gas treatment process |
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| CN103913071A true CN103913071A (en) | 2014-07-09 |
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| CN201310005304.2A Pending CN103913071A (en) | 2013-01-08 | 2013-01-08 | Metallurgical slag flue gas treatment process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108774654A (en) * | 2018-04-13 | 2018-11-09 | 淄博瑞能热电科技有限公司 | A kind of flushing cinder vapor governing system for blast furnace |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5601625A (en) * | 1993-12-07 | 1997-02-11 | Mannesmann Aktiengesellschaft | Process and device for removing heavy metals and compounds containing heavy metals |
| CN201211461Y (en) * | 2008-06-16 | 2009-03-25 | 河南海力特机电制造有限公司 | High pressure fine water mist desulfurizing-dusting apparatus |
| CN102329901A (en) * | 2011-10-14 | 2012-01-25 | 无锡市东方环境工程设计研究所有限公司 | Liquid-state steel slag micronization recycling device |
| CN102559957A (en) * | 2012-02-09 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Centrifugal type fusion slag quenching and dry type granulating, and waste heat recovery power generation system and method |
| CN102787187A (en) * | 2012-08-31 | 2012-11-21 | 上海宝钢节能技术有限公司 | System and method for generating power with blast-furnace slag washing water and exhaust steam low-temperature waste heat |
-
2013
- 2013-01-08 CN CN201310005304.2A patent/CN103913071A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5601625A (en) * | 1993-12-07 | 1997-02-11 | Mannesmann Aktiengesellschaft | Process and device for removing heavy metals and compounds containing heavy metals |
| CN201211461Y (en) * | 2008-06-16 | 2009-03-25 | 河南海力特机电制造有限公司 | High pressure fine water mist desulfurizing-dusting apparatus |
| CN102329901A (en) * | 2011-10-14 | 2012-01-25 | 无锡市东方环境工程设计研究所有限公司 | Liquid-state steel slag micronization recycling device |
| CN102559957A (en) * | 2012-02-09 | 2012-07-11 | 南京凯盛开能环保能源有限公司 | Centrifugal type fusion slag quenching and dry type granulating, and waste heat recovery power generation system and method |
| CN102787187A (en) * | 2012-08-31 | 2012-11-21 | 上海宝钢节能技术有限公司 | System and method for generating power with blast-furnace slag washing water and exhaust steam low-temperature waste heat |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108774654A (en) * | 2018-04-13 | 2018-11-09 | 淄博瑞能热电科技有限公司 | A kind of flushing cinder vapor governing system for blast furnace |
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Application publication date: 20140709 |