CN204385263U - A kind of hot blast mineral hot furnace - Google Patents
A kind of hot blast mineral hot furnace Download PDFInfo
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- CN204385263U CN204385263U CN201520007796.3U CN201520007796U CN204385263U CN 204385263 U CN204385263 U CN 204385263U CN 201520007796 U CN201520007796 U CN 201520007796U CN 204385263 U CN204385263 U CN 204385263U
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Abstract
The utility model relates to ferroalloy smelting technical field, specifically discloses a kind of hot blast mineral hot furnace, comprising: body of heater, and it is one with the sealed chamber of smoke discharging pipe; Burning air-supply arrangement, it is connected with described smoke discharging pipe; And hot blast blast tube, its one end is connected with described burning air-supply arrangement, and the described hot blast blast tube the other end is connected with the sealed chamber of described furnace interior; Wherein, the coal gas produced in described body of heater is delivered to burning air-supply arrangement place Thorough combustion through smoke discharging pipe and obtains high-temperature hot-air, after through described hot blast blast tube, high-temperature hot-air is inputted in the sealed chamber of described furnace interior.Hot blast mineral hot furnace described in the utility model is integrated with the advantage of blast furnace and mineral hot furnace, make full use of system self and produce coal gas, achieve energy recycling, not only increase plant factor, improve equipment yield, fully can reduce production cost again, reduce the pollutant discharge amount of unit product, improve the competitiveness of product in market.
Description
Technical field
The coal-gas recovering that the utility model relates to the ferroalloy industry closed electric furnace and chemical industry furnace of calcium carbide utilizes technical field, be mainly concerned with a kind of hot blast mineral hot furnace, it has gathered the advantage of submerged arc furnace system and blast furnace system, make full use of the coal gas that electric furnace self produces, high degree reduces the unit consumption of energy of ore-smelting furnace product, decreases the discharge of dust pollution thing.
Background technology
Iron And Steel Industry is the basic industry of national economy, and iron alloy, as steel making deoxidant and additive, is the indispensable material of steel-making; Calcium carbide is important industrial chemicals, mainly for generation of acetylene gas, also for organic synthesis, oxycetylene welding etc.Enter 21 century, China has become the center of world steel industry, be in the world first produce the country of steel more than 400,000,000 tons per year, now more than 700,000,000 tons.The fast development of Iron and Steel Production, has improved constantly the status of China in ferroalloy industry field, the world.Production rate per year, the eighties accounts for the 4th, the world and the 3rd mid-term.Enter the nineties, after the Soviet Union's dissolution, China's iron alloy output is tired out increasing and is leapt to the first, and becomes World Ferroalloy first producing country and export State.
The kind of the ferroalloy industry is high-meltiing alloy mostly, and smelt difficulty greatly compared with blase furnace cast iron, power consumption is high.Compared with blast furnace, the output of separate unit electric furnace is too small, for meeting the demand of Iron And Steel Industry, need build a large amount of mineral hot furnace, conservative estimation, and domestic electric furnace quantity has up to ten thousand, blast furnace only more than 700 seats on year-on-year basis.The gas temperature produced in these mineral hot furnaces is high, and fluctuation is large, and nominal situation temperature is 150-450 DEG C, up to 700 DEG C during special operation condition, and with Mars, and gas dust concentration 40-150g/Nm
3, its dust belongs to minuteness particle, particle diameter be less than 2 μm account for 90%.Gas composition mainly CO, O in coal gas
2, H
2, H
2o, CO
2deng.Because mineral hot furnace quantity is large, the coal gas of generation is many, if directly discharged or post combustion emission, dust wherein can cause pollution in wide area to air, particularly instantly, national eastern region is shrouded by haze mostly, highlights and should propose higher requirement to the dedusting environment friendly aspect of industry.
In addition, the melting under the high temperature arc light and the effect of furnace charge conduction heat energy of electrode of solid charge in existing mineral hot furnace is alloy melt, but, Nei Siliao district, region proportion around alloy melt comparatively large (as shown in Figure 1), Space-time idea iron alloy in mineral hot furnace can not be made full use of, transitional region between Qie Siliao district and slag is easy to cause the clinker mutually bondd, cause mineral hot furnace deslagging not smooth, and easily take the furnace charge of a part of also non-melting out of, cause the waste of resource.
Utility model content
The purpose of this utility model is as ore-smelting furnace method alloy smelting series products provides one more energy-conservation, more efficient ferroalloy smelting equipment, be hot blast mineral hot furnace, it is integrated with the advantage of blast furnace and mineral hot furnace, makes full use of system self and produces coal gas, achieve energy recycling, not only increase plant factor, improve equipment yield, fully can reduce production cost again, improve the competitiveness of product in market.
To achieve these goals with some other objects, the utility model provides a kind of hot blast mineral hot furnace, it is characterized in that, comprising:
Body of heater, it is one with the sealed chamber of smoke discharging pipe;
Burning air-supply arrangement, it is arranged on described smoke discharging pipe;
And hot blast blast tube, its one end is connected with described burning air-supply arrangement, and the described hot blast blast tube the other end is connected with the sealed chamber of described body of heater;
Wherein, the coal gas produced in described body of heater is delivered to burning air-supply arrangement place Thorough combustion through smoke discharging pipe and obtains high-temperature hot-air, after through described hot blast blast tube, high-temperature hot-air to be inputted the sealed chamber of described furnace interior.
In such scheme, hot blast mineral hot furnace is integrated with the advantage of blast furnace and mineral hot furnace, makes full use of the coal gas that system self produces, achieve energy recycling, not only increase plant factor, improve equipment yield, fully can reduce production cost again, improve the competitiveness of product in market.
In such scheme, coal gas being lighted the heat discharged wherein in burning air-supply arrangement adds after warm air produces high-temperature hot-air, high-temperature hot-air is inputted in mineral hot furnace, melting is carried out to furnace charge, now more oxygen combustion can produce more heat energy, be conducive to the acceleration of reacting, therefore arrange in next scheme and with the addition of air supply channel and air feeder, oxygen can be filled with in hot blast blast tube like this by the cooperation of air feeder and air supply channel, so that dead material burning is more abundant in mineral hot furnace, react faster, intensified smelting effect, improve mineral hot furnace production capacity.
Preferably, wherein, described hot blast mineral hot furnace also comprises:
Air supply channel, its one end is connected with described hot blast blast tube, and described air supply channel is connected with the tube chamber of described sirocco reclamation pipe, and the other end of described air supply channel connects air feeder.
In above-mentioned each scheme, all dust removal process is not carried out to coal gas, this will cause certain infringement to connecting tube (such as: hot blast blast tube), be specially the easily too much dust of deposition, cause the current problem such as not smooth of air-flow, therefore, be necessary to carry out dust removal process to coal gas.
Preferably, wherein, also comprise:
Fly-ash separator, it is arranged on the smoke discharging pipe between described burning air-supply arrangement and described body of heater.
At present, close mineral hot furnace gas purification and generally adopt wet method or dry method dust, these method for dust removals and device are all applicable to hot blast mineral hot furnace described in the utility model.
Reductive agent is added with in the furnace charge of hot blast mineral hot furnace, the high-temperature hot-air produced adopt gas-fired in above-mentioned each scheme after and the furnace charge in mineral hot furnace Nei Siliao district carry out in the process of burning, the reductive agent of some amount can be consumed, likely improve production cost, therefore, the utility model people is provided with coal powder blowing device in next scheme, the coal dust of some amount of jetting in mineral hot furnace, replace reductive agent first to carry out burning melting furnace charge with oxygen, save production cost.
Preferably, wherein, also comprise:
Coal powder blowing device, it is arranged on the sidewall of described body of heater.
Preferably, wherein, described coal powder blowing device also comprises:
Pulverized Coal Bin, its feed opening end is extended on described sidewall of the furnace body in described body of heater;
Gas blower, its air outlet is connected with described Pulverized Coal Bin feed opening end;
And measuring apparatus, it is arranged on the feed opening end of described Pulverized Coal Bin.
Preferably, wherein, also comprise:
Electrode, it is arranged in described body of heater;
Transformer, it is electrically connected with described electrode;
And coal pulverizer, it is connected by pulverized coal conveying device with described coal powder blowing device.
Preferably, wherein, described pulverized coal conveying device is Pneumatic conveyer.
Preferably, wherein, described air feeder is oxygen canister or oxygen station.
In such scheme, air feeder is arranged according to need of production and support equipment cost consideration, can select the mode adopting oxygen canister or oxygen station.
Preferably, wherein, described burning air-supply arrangement is hotblast stove.
The beneficial effects of the utility model are:
Hot blast mineral hot furnace described in the utility model is integrated with the advantage of blast furnace and mineral hot furnace, makes full use of the coal gas that system self produces, achieves energy recycling, not only increase plant factor, improve equipment yield, fully can reduce production cost again, improve the competitiveness of product in market;
Coal gas being lighted the heat discharged wherein in burning air-supply arrangement adds after warm air forms high-temperature hot-air, inputted in mineral hot furnace, melting is carried out to furnace charge, now require more oxygen in mineral hot furnace for burning heat energy is provided, therefore air supply channel and air feeder are set to air feeder and in hot blast blast tube, are filled with oxygen by air supply channel, because the shock action of burn violent and high-temperature hot-air forms hot blast raceway zone in the Si Liao district of mineral hot furnace, be conducive to extremely expecting the more abundant of burning in mineral hot furnace, Smelting Effect is good, improve hot blast mineral hot furnace production capacity,
Coal powder blowing device, to the coal dust of mineral hot furnace winding-up some amount, replaces reductive agent first to carry out burning melting furnace charge with oxygen, saves production cost;
High-temperature hot-air is generated and the gas flow loop blasted in stove after can forming coal gas and coal-gas recovering burning between body of heater, smoke discharging pipe, burning air-supply arrangement and hot blast blast tube cavity, ventilated in strengthening mineral hot furnace, facilitate the fast melting of furnace charge, improve production capacity to a great extent;
In sum, it is simple that the utility model has structure, and production cost is low, energy-conserving and environment-protective, and the advantage that production capacity effectively improves.
Accompanying drawing explanation
Fig. 1 is the J. sigillate process schematic in the body of heater of mineral hot furnace in prior art.
Fig. 2 is the J. sigillate process schematic in the body of heater of hot blast mineral hot furnace described in the utility model.
Fig. 3 is the structural representation of a kind of embodiment of hot blast mineral hot furnace described in the utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, can implements according to this with reference to specification sheets word to make those skilled in the art.
A kind of implementation of hot blast mineral hot furnace provided by the utility model is as shown in Figures 2 and 3, comprising:
Body of heater 15, it is one with the sealed chamber of smoke discharging pipe 16;
Burning air-supply arrangement 13, it is arranged on smoke discharging pipe 16;
And hot blast blast tube 18, its one end is connected with burning air-supply arrangement 13, and the sealed chamber of hot blast blast tube 18 the other end and body of heater 15 is connected;
Wherein, the coal gas produced in body of heater 15 is delivered to burning air-supply arrangement place Thorough combustion post-heating air through smoke discharging pipe 16 and obtains high-temperature hot-air, after through hot blast blast tube 18, high-temperature hot-air is inputted sealed chamber in body of heater 15.
In such scheme, hot blast mineral hot furnace is integrated with the advantage of blast furnace and mineral hot furnace, makes full use of system self and produces coal gas, achieve energy recycling, not only increase plant factor, improve equipment yield, fully can reduce production cost again, improve the competitiveness of product in market.
In such scheme, burning air-supply arrangement 13 in by gas-fired post-heating air after form high-temperature hot-air, high-temperature hot-air is inputted mineral hot furnace Nei Siliao district, melting is carried out to furnace charge, now require more oxygen for burning, therefore arrange in next scheme and with the addition of air supply channel 17 and air feeder 14, oxygen can be filled with in hot blast blast tube 18 like this by the cooperation of air feeder 14 and air supply channel 17, so that dead material reaction is more abundant in mineral hot furnace, intensified smelting effect, improves mineral hot furnace production capacity.
Wherein, hot blast mineral hot furnace also comprises:
Air supply channel 17, its one end is connected with hot blast blast tube 18, and air supply channel 17 is connected with the tube chamber of sirocco reclamation pipe, and the other end of air supply channel 17 connects air feeder 14.
In above-mentioned each scheme, all dust removal process is not carried out to coal gas, this will cause certain infringement to connecting tube or equipment (such as: burning air-supply arrangement 13 or hot blast blast tube), be specially the easily too much dust of deposition, cause the current problem such as not smooth of air-flow, therefore, be necessary to carry out dust removal process to coal gas.
Wherein, also comprise:
Fly-ash separator 10, it is arranged on the smoke discharging pipe 16 between burning air-supply arrangement 13 and body of heater 15.
At present, close mineral hot furnace gas purification and generally adopt wet method or dry method dust, these method for dust removals and device are all tried out in hot blast mineral hot furnace of the present utility model.
Reductive agent is added with in the furnace charge of mineral hot furnace, the high-temperature hot-air produced adopt gas-fired in above-mentioned each scheme after and the furnace charge in mineral hot furnace Nei Siliao district carry out in the process of burning, the reductive agent of some amount can be consumed, likely improve production cost, therefore, the utility model people is provided with coal powder blowing device in next scheme, the coal dust of some amount of jetting in mineral hot furnace, replace reductive agent first to carry out burning melting furnace charge with oxygen, save production cost.
Wherein, also comprise:
Coal powder blowing device, it is arranged on the sidewall of body of heater 15.
Wherein, coal powder blowing device also comprises Pulverized Coal Bin, and its discharge port end is extended on body of heater 15 sidewall in body of heater;
Gas blower, its air outlet is connected with described Pulverized Coal Bin feed opening end;
And measuring apparatus, it is arranged on the feed opening end of described Pulverized Coal Bin.
Wherein, also comprise:
Electrode 1, it is arranged in body of heater 15;
Transformer 15, it is electrically connected with electrode;
And coal pulverizer 12, it is connected by pulverized coal conveying device with coal powder blowing device.
Wherein, pulverized coal conveying device is Pneumatic conveyer.
Wherein, air feeder 14 is oxygen canister or oxygen station.
In such scheme, air feeder 14 is arranged according to need of production and support equipment cost consideration, can select the mode adopting oxygen canister or oxygen station.
Wherein, the air-supply arrangement 13 that burns is hotblast stove.
As shown in Figure 1, the distribution situation of the various materials in existing mineral hot furnace is followed successively by solid charge 5, Transition Materials 6, slag 2, alloy melt 4 from top to bottom and is distributed in the dead material 3 in Si Liao district of alloy melt surrounding.As shown in Figure 2, the hot blast mineral hot furnace that the utility model provides, coal gas is lighted the heat discharged wherein in burning air-supply arrangement 13 and add warm air formation high-temperature hot-air, again high-temperature hot-air is inputted the body of heater Nei Siliao district 3 of mineral hot furnace, melting is carried out to furnace charge, now more oxygen is used for burning can provide more energy, therefore air supply channel 17 and air feeder 14 are set to air feeder 14 and are filled with oxygen by air supply channel 17 in hot blast blast tube 18, because the shock action of burn violent and gas forms hot blast raceway zone 8 in the Si Liao district of mineral hot furnace, so that dead material burning is more abundant in mineral hot furnace, Smelting Effect is good, improve mineral hot furnace production capacity, and also ensure that the alloy melt not having molten state blows back in hot blast blast tube, ensure production safety.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and shown here embodiment.
Claims (9)
1. a hot blast mineral hot furnace, is characterized in that, comprising:
Body of heater, it is one with the sealed chamber of smoke discharging pipe;
Burning air-supply arrangement, it is connected with described smoke discharging pipe;
And hot blast blast tube, its one end is connected with described burning air-supply arrangement, described hot blast blast tube
The other end is connected with the sealed chamber of described body of heater;
Wherein, the coal gas produced in described body of heater is delivered to burning air-supply arrangement place Thorough combustion post-heating air through smoke discharging pipe and obtains high-temperature hot-air, after through described hot blast blast tube, high-temperature hot-air is inputted in the sealed chamber of described furnace interior.
2. hot blast mineral hot furnace as claimed in claim 1, is characterized in that, also comprise:
Air supply channel, its one end is connected with described hot blast blast tube, and described air supply channel is connected with the tube chamber of described hot blast blast tube, and the other end of described air supply channel connects air feeder.
3. hot blast mineral hot furnace as claimed in claim 1, is characterized in that, also comprise:
Fly-ash separator, it is arranged on the smoke discharging pipe between described burning air-supply arrangement and described body of heater.
4. the hot blast mineral hot furnace according to any one of claim 1-3, is characterized in that, also comprise:
Coal powder blowing device, it is arranged on the sidewall of described body of heater.
5. hot blast mineral hot furnace as claimed in claim 4, it is characterized in that, described coal powder blowing device also comprises:
Pulverized Coal Bin, its feed opening end is extended on described sidewall of the furnace body in described body of heater;
Gas blower, its air outlet is connected with described Pulverized Coal Bin feed opening end;
And measuring apparatus, it is arranged on the feed opening end of described Pulverized Coal Bin.
6. hot blast mineral hot furnace as claimed in claim 4, is characterized in that, also comprise:
Electrode, it is arranged in described body of heater;
Transformer, it is electrically connected with described electrode;
And coal pulverizer, it is connected by pulverized coal conveying device with described coal powder blowing device.
7. hot blast mineral hot furnace as claimed in claim 6, it is characterized in that, described pulverized coal conveying device is Pneumatic conveyer.
8. hot blast mineral hot furnace as claimed in claim 2, it is characterized in that, described air feeder is oxygen canister or oxygen station.
9. hot blast mineral hot furnace as claimed in claim 1, it is characterized in that, described burning air-supply arrangement is hotblast stove.
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| CN201520007796.3U CN204385263U (en) | 2015-01-07 | 2015-01-07 | A kind of hot blast mineral hot furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451149A (en) * | 2015-01-07 | 2015-03-25 | 刘培骁 | Hot-blast submerged arc furnace |
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2015
- 2015-01-07 CN CN201520007796.3U patent/CN204385263U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104451149A (en) * | 2015-01-07 | 2015-03-25 | 刘培骁 | Hot-blast submerged arc furnace |
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