CN206188858U - Sintering dephosphorization result recovery unit - Google Patents
Sintering dephosphorization result recovery unit Download PDFInfo
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- CN206188858U CN206188858U CN201621292349.8U CN201621292349U CN206188858U CN 206188858 U CN206188858 U CN 206188858U CN 201621292349 U CN201621292349 U CN 201621292349U CN 206188858 U CN206188858 U CN 206188858U
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- Prior art keywords
- dephosphorization
- pipeline
- sintering
- condenser
- air exhauster
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Abstract
The utility model discloses a sintering dephosphorization result recovery unit, burner blower and liquefied petroleum gas tank all are connected through pipeline and some firearm, point firearm below is equipped with the fritting furnace, the export and the one -level cyclone of fritting furnace are connected, one -level cyclone passes through pipeline second grade cyclone and connects, second -stage cyclone dust collector passes through the pipeline and is connected with air inlet of condenser, the export below of condenser bottom is equipped with dephosphorization product collection container, the condenser gas outlet is passed through the pipeline and is connected with the air exhauster, the air exhauster passes through the pipeline and is connected with the silencer, dephosphorization product collection container still is connected with the oxygen jar. During the use, it is gaseous to convert the P in the iron ore raw materials into phosphorous result PCl3 in the fritting furnace, and the dephosphorization result among the sintering waste gas utilizes phosphorous result PCl3's boiling point to be 76 DEG C after the second grade removes dust, and a condenser is added to a lot of characteristics low -boiling than other waste gas in the dephosphorization device to make gaseous state PCl3 become the liquid state, accomplish the recovery of dephosphorization result and the purpose of enrichment.
Description
Technical field
The utility model is related to technical field of ferrous metallurgy, specifically a kind of sintering dephosphorizing product recoverer.
Background technology
After financial crisis outburst in 2008, Chinese Iron ＆ Steel Enterprises have met with unprecedented " severe winter ", and the performance of enterprises is always
It is in meagre profit and lossing state, on the one hand, steel market demand is low, another aspect Iron and Steel Enterprises in China depends on import iron unduly
Ore, and imported Fe ore price soars all the way.In order to reduce production cost, sight is transferred to the country and accumulate by most of steel plant
Hide in the exploitation of abundant compositeon-silicon paragenetic, especially phosphorus content high-phosphor oolitic hematite higher.
Because blast furnace ironmaking is unable to dephosphorization, and pneumatic steelmaking dephosphorization cost is very high, thus dephosphorization problem is to develop height
Fosfosiderite first has to the problem for solving.
It can be seen from oxygen gesture figure according to oxide, the oxygen gesture line containing phosphorous oxides under the oxygen gesture line of ferriferous oxide, in oxygen
In gesture figure, under uniform temperature, oxide oxygen gesture line is lower, its oxygen gesture just it is smaller, oxide is more stable, oxide be just more difficult to by
Reduction.In raw materials for sintering, essential mineral is bloodstone (Fe2O3), and iron ore powder sintering is a typical oxidizing atmosphere,
The possibility that phosphorus ore containing is not almost reduced, therefore, it is generally the case that the phosphorus unit in iron ore in sintering production process
Element all can be transferred in sintering deposit, and then is taken in blast furnace.But, raw materials for sintering will be with carbon as fuel, around carbon particle
Can there is local reducing atmosphere, it is possible to the P elements in high-phosphorus iron ore are restored to form dephosphorization effect.By
Easily it is oxidized in phosphorus steam, it is if in the presence of certain material is added, forming the phosphorous gaseous products of stabilization, then sintered
The dephosphorization that gasifies in journey is to a certain extent feasible, but dephosphorization product is difficult to collect.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of sintering dephosphorizing product recoverer.
The utility model is achieved through the following technical solutions：
A kind of sintering dephosphorizing product recoverer, including combustion fan, LPG cyoinders, sintering furnace, igniter, one-level
Cyclone dust collectors, second cyclone dust extractor, condenser, silencer, dephosphorization product collecting container, air exhauster and oxygen tank,
The combustion fan and LPG cyoinders are connected by pipeline with igniter, and igniter lower section is provided with sintering
Stove, the outlet of sintering furnace is connected with one cyclonic deduster, and one cyclonic deduster is connected by pipeline with second cyclone dust extractor
Connect, second cyclone dust extractor is connected by pipeline with condenser air inlet, the outlet lower section of condenser bottom is provided with dephosphorization product
Collection vessel, condenser gas outlet is connected by pipeline with air exhauster, and air exhauster is connected by pipeline with silencer；Dephosphorization product
Collection vessel is also connected with oxygen tank.
Further, the first temperature detection sensor for detecting EGT, the first temperature are provided with sintering furnace
Detection sensor is connected by data wire with EGT display instrument, and detection of negative pressure sensor, negative pressure inspection are provided with sintering furnace
Survey sensor to be connected with depressimeter by data wire, the lighting-up tuyere of sintering furnace is provided with second temperature detection sensor, the second temperature
Degree detection sensor is connected by data wire with firing temperature display instrument.
Further, 250 DEG C of the resistance to temperature of the air exhauster, gas flow rate is 15-18m3/ min, rated voltage is
380V, rated power is 7.5KW.
Further, the voltage of the one cyclonic deduster and second cyclone dust extractor is 220V, and frequency is 50Hz,
Power is 1.0-1.2KW, and maximum quantity of wind is 1.2-1.8m3/ min, once filtering can remove more than 95% more than 45um
Grain.
Further, the condenser is shell-and-tube heat exchanger, and heat exchanger operation noiselessness, highest is pressure-resistant 1.6Mpa is adopted
It is made of stainless steel.
Advantage of the present utility model and have the beneficial effect that：
1, the P in iron ore raw material is converted to phosphorous product PCl by the utility model in sintering process3Gas, realizes
In the direct dephosphorization of sintering process, cost of material and dephosphorization cost are greatly reduced, it is very rich to development and utilization country reserves
Rich high-phosphor oolitic hematite has directive significance.
2, the dephosphorization product in sintered discharge gas by after two-stage dust removal, using phosphorous product PCl3Boiling point be 76 DEG C, compared with
The characteristics of other waste gas boiling points are much lower, adds a condenser, so that gaseous state PCl in dephosphorization apparatus3It is changed into liquid, it is complete
Into the purpose of recovery and the enrichment of dephosphorization product.
3, the liquid dephosphorization product PCl that will be enriched to3In be passed through oxygen, PCl3 liquid is chemically reacted, generation three
Chlorethoxyfos (POCl3), POCl3 (POCl3) it is widely used in the production of agricultural chemicals, medicine, dyestuff, phosphate and fire retardant, and
It is the raw material for manufacturing organophosphorus pesticide herbicide, Spanon etc..Realize the high value added utilization for reclaiming dephosphorization product.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1- combustion fans；2- LPG cyoinders；3- EGT display instruments；The temperature detection sensors of 4- first；
5- sintering furnaces；6- firing temperature display instruments；7- igniters；8- depressimeters；9- one cyclonic dedusters；Bis- grades of cyclone dust removals of 10-
Device；11- condensers；12- silencers；13- dephosphorization product collecting containers；14- air exhausters；15- oxygen tanks.
Specific embodiment
The technical solution of the utility model is further illustrated with reference to specific embodiment.
Refer to Fig. 1, a kind of sintering dephosphorizing product recoverer, including combustion fan 1, LPG cyoinders 2, sintering furnace
5th, igniter 7, one cyclonic deduster 9, second cyclone dust extractor 10, condenser 11, silencer 12, dephosphorization product collecting container
13rd, air exhauster 14 and oxygen tank 15,
The combustion fan 1 and LPG cyoinders 2 are connected by pipeline with igniter 7, and the lower section of igniter 7 is provided with burning
The first temperature detection sensor 4 for detecting EGT, the first temperature detection sensor are provided with freezing of a furnace 5, sintering furnace 5
It is connected with EGT display instrument 3 by data wire, detection of negative pressure sensor, detection of negative pressure sensor is provided with sintering furnace 5
It is connected with depressimeter 8 by data wire, the lighting-up tuyere of sintering furnace 5 is provided with second temperature detection sensor, second temperature detection
Sensor is connected by data wire with firing temperature display instrument 6, and EGT display instrument 3 can intuitively show the temperature of waste gas,
Firing temperature display instrument 6 can show the firing temperature of igniter 7, and depressimeter 8 can measure the negative pressure in sintering furnace 5；Sintering
The outlet of stove 5 is connected with one cyclonic deduster 9, and one cyclonic deduster 9 is connected by pipeline with second cyclone dust extractor 10,
Second cyclone dust extractor 10 is connected by pipeline with the air inlet of condenser 11, and the outlet lower section of the bottom of condenser 11 is provided with dephosphorization product
Thing collection vessel 13, dephosphorization product collecting container 13 is resistant to the high pressure of 500kpa, and good leak tightness；The gas outlet of condenser 11
It is connected with air exhauster 14 by pipeline, air exhauster 14 is connected by pipeline with silencer 12；Dephosphorization product collecting container 13 also with
Oxygen tank 15 is connected.
In the present embodiment, 250 DEG C of the resistance to temperature of the air exhauster 14, gas flow rate is 15-18m3/ min, rated voltage
It is 380V, rated power is 7.5KW.
In the present embodiment, the voltage of the one cyclonic deduster 9 and second cyclone dust extractor 10 is 220V, frequency
It is 50Hz, power is 1.0-1.2KW, and maximum quantity of wind is 1.2-1.8m3/ min, once filtering can remove more than 95% 45um with
On particle.
In the present embodiment, the condenser 11 is shell-and-tube heat exchanger, and heat exchanger runs noiselessness, and highest is pressure-resistant
1.6Mpa, is made of Stainless steel 316 L materials.
In the present embodiment, the air quantity of the dephosphorization product collecting container 13 is 1200m3/ h, power is 0.75KW, filtering
Efficiency is more than 99.9%, and filter area is 15m2, filter core easy cleaning with replace.
The utility model utilizes phosphorous product PCl3Boiling point be 76 DEG C, it is much lower compared with other waste gas boiling points, therefore de-
A condenser 11 is added in phosphorus device, can reach makes PCl3Gaseous state is changed into liquid, completes the recovery and enrichment of dephosphorization product.
During sintering, first to raw materials for sintering is added in sintering furnace 5, carbon is allocated into as fuel, and add CaCl2.Opening point
Firearm 7, under the reducing atmosphere around carbon particle, reacts：
CaCl2+SO2(g)+O2(g)=CaSO4+Cl2 (1)
2Ca5(PO4)3F+9Cl2+9SiO2+ 15C=6PCl3+15CO+9CaSiO3+CaF2 (2)
SO in formula (1)2It is mainly derived from the sulphur content in raw material, O2Raw material is mainly entered by the effect of sintering suction pressure；
Contact formula (1) and formula (2), the material for playing dephosphorizing are intermediate product chlorine, and chlorine is produced by formula (1), participates in formula (2)
Reaction in, produce PCl3Gas；
Additionally, to Na can also be added in sintering furnace 52SO4, when adding Na in raw material2SO4Afterwards, according to existing in raw material
, there is following reaction in composition：
Na2SO4+Al2O3+2SiO2+ CO=2NaAlSiO4+SO2+CO2 (3)
Bloodstone and gangue are presented oolitic texture in ore, alternate symbiosis, and embedding cloth is tight.Knowable to formula (3), in CO
In the presence of, the Na added in raw material2SO4Can be with gangue content Al in ore2O3And SiO2Reaction is participated in, so as to serve brokenly
The effect of bad oolitic texture, is exposed fluor-apatite, participates in the full extent in reacting.Same up-to-date style (3) generates
SO2, and SO2It is the reactant of formula (1), is conducive to the carrying out of dephosphorisation reaction.
(air exhauster 14 produce negative pressure) first under the effect of air exhauster 14 for the waste gas produced in the sintering production process of sintering furnace 5
One cyclonic deduster 9 and second cyclone dust extractor 10 are sequentially passed through by pipeline, by one cyclonic deduster 9 and two grades of whirlwind
The dust (avoiding dust from blockage problem occur in condenser 11) that deduster 10 pairs is removed in waste gas；Then waste gas enters into cold
In condenser 11, condenser 11 is realized lowering the temperature waste gas, makes the dephosphorization product PCl of low boiling point3(PCl3Boiling point be 76 DEG C) it is cold
But it is changed into liquid and enters into carry out enriching and recovering in dephosphorization product collecting container 13, other boiling points gas high is then with air exhauster 14
Discharged (silencer 12 can reduce noise) through silencer 12.
Afterwards, oxygen tank 15 makes main phosphorus containg substances PCl to oxygen is passed through in dephosphorization product collecting container 133Occur
Chemical reaction, generation POCl3 (POCl3), POCl3 (POCl3) be widely used in agricultural chemicals, medicine, dyestuff, phosphate and
The production of fire retardant, and be the raw material for manufacturing organophosphorus pesticide herbicide, Spanon etc..
It is obvious to a person skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit or essential attributes of the present utility model, can in other specific forms realize that this practicality is new
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model.Any reference in claim should not be considered as limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each implementation method is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Specification an as entirety, the technical scheme in each embodiment can also be formed into those skilled in the art through appropriately combined
May be appreciated other embodiment.
Claims (3)
1. a kind of sintering dephosphorizing product recoverer, it is characterised in that：Including combustion fan, LPG cyoinders, sintering furnace, point
Firearm, one cyclonic deduster, second cyclone dust extractor, condenser, silencer, dephosphorization product collecting container, air exhauster and oxygen
Gas tank,
The combustion fan and LPG cyoinders are connected by pipeline with igniter, and igniter lower section is provided with sintering furnace, burns
The outlet of freezing of a furnace is connected with one cyclonic deduster, and one cyclonic deduster is connected by pipeline with second cyclone dust extractor, and two
Level cyclone dust collectors are connected by pipeline with condenser air inlet, and the outlet lower section of condenser bottom is provided with dephosphorization collection of products appearance
Device, condenser gas outlet is connected by pipeline with air exhauster, and air exhauster is connected by pipeline with silencer；Dephosphorization collection of products holds
Device is also connected with oxygen tank.
2. sintering dephosphorizing product recoverer according to claim 1, it is characterised in that：It is provided with for examining in sintering furnace
The first temperature detection sensor of EGT is surveyed, the first temperature detection sensor is connected by data wire with EGT display instrument
Connect, detection of negative pressure sensor is provided with sintering furnace, detection of negative pressure sensor is connected by data wire with depressimeter, sintering furnace
Lighting-up tuyere is provided with second temperature detection sensor, and second temperature detection sensor is connected by data wire with firing temperature display instrument
Connect.
3. sintering dephosphorizing product recoverer according to claim 1, it is characterised in that：The condenser is changed for shell-and-tube
Hot device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621292349.8U CN206188858U (en) | 2016-11-28 | 2016-11-28 | Sintering dephosphorization result recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621292349.8U CN206188858U (en) | 2016-11-28 | 2016-11-28 | Sintering dephosphorization result recovery unit |
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| Publication Number | Publication Date |
|---|---|
| CN206188858U true CN206188858U (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621292349.8U Expired - Fee Related CN206188858U (en) | 2016-11-28 | 2016-11-28 | Sintering dephosphorization result recovery unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399674A (en) * | 2016-11-28 | 2017-02-15 | 华北理工大学 | Recovery method for sintering gasificating dephosphorization |
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2016
- 2016-11-28 CN CN201621292349.8U patent/CN206188858U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399674A (en) * | 2016-11-28 | 2017-02-15 | 华北理工大学 | Recovery method for sintering gasificating dephosphorization |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20171128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |