CN112629264A - Environment-friendly energy-saving melting furnace - Google Patents
Environment-friendly energy-saving melting furnace Download PDFInfo
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- CN112629264A CN112629264A CN202011515715.2A CN202011515715A CN112629264A CN 112629264 A CN112629264 A CN 112629264A CN 202011515715 A CN202011515715 A CN 202011515715A CN 112629264 A CN112629264 A CN 112629264A
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- 238000002844 melting Methods 0.000 title claims abstract description 32
- 230000008018 melting Effects 0.000 title claims abstract description 32
- 238000010521 absorption reaction Methods 0.000 claims abstract description 54
- 238000007599 discharging Methods 0.000 claims description 7
- 239000012774 insulation material Substances 0.000 claims description 6
- 239000011819 refractory material Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 claims description 3
- 239000003517 fume Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000003818 cinder Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 40
- 229910052760 oxygen Inorganic materials 0.000 description 40
- 239000001301 oxygen Substances 0.000 description 40
- 239000007789 gas Substances 0.000 description 34
- 239000000428 dust Substances 0.000 description 28
- 238000003723 Smelting Methods 0.000 description 19
- 239000012535 impurity Substances 0.000 description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 15
- 239000000446 fuel Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 229910052799 carbon Inorganic materials 0.000 description 11
- 239000002893 slag Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000012286 potassium permanganate Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/20—Arrangements for treatment or cleaning of waste gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/10—Monolithic linings; Supports therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention relates to the technical field of melting furnaces, and discloses an environment-friendly and energy-saving melting furnace which comprises a melting area and a hot air area, wherein the melting area comprises a furnace body and a furnace cylinder positioned below the furnace body, the hot air area comprises a hot air cavity, the top of the hot air cavity is communicated with an exhaust pipe, the bottom of the hot air cavity is communicated with an inner cavity of the furnace body, a heat absorption air pipe is arranged in the hot air cavity, one end of the heat absorption air pipe is communicated with an air inlet pipe, the other end of the heat absorption air pipe is communicated with a hot air pipe, and the hot air pipe is communicated with the inner cavity of the furnace body. The heat utilization rate in the high-temperature tail gas is the highest, and the energy-saving and environment-friendly effects of the equipment are better.
Description
Technical Field
The invention relates to the technical field of melting furnaces, in particular to an environment-friendly and energy-saving melting furnace.
Background
The smelting furnace is mainly used for smelting carbon steel, alloy steel and special steel, and can also be used for smelting and temperature raising of nonferrous metals such as copper, aluminum and the like. With the continuous development of smelting technology, the technology of the smelting furnace is also continuously improved: the utility model with the grant publication number of CN201762355U discloses an energy-saving low-carbon steel smelting furnace, an industrial smelting furnace for smelting metal minerals, in particular to an energy-saving steel smelting furnace, a furnace body of the smelting furnace is provided with a cooling interlayer, the furnace chamber is divided into a molten pool, a sintering zone and a preheating zone from bottom to top, a gasification pipe with a one-way valve is introduced at the sintering zone, the inlet of the gasification pipe is connected with a liquid storage tank filled with potassium permanganate solution through a pipeline, the potassium permanganate solution is gasified and decomposed into oxyhydrogen fuel through high temperature in the furnace, combustion can be supported, energy can be saved, carbon dioxide emission can be reduced, production cost can be reduced, but the potassium permanganate is easy to sublimate after being heated to form a gas state, the potassium permanganate has strong oxidizing property, the high degree oxidation of metal furnace burden can be caused after entering the furnace, the yield of the metal furnace burden is, the energy consumption is greatly increased.
The utility model with the license number of CN202511612U discloses a gas smelting furnace, which comprises a furnace body, wherein the upper end of the furnace body is connected with a chimney, the furnace body is provided with a feed inlet and a melt outlet, and at least two rows of gas and combustion-supporting gas nozzles surrounding the side wall of the furnace body are arranged between the feed inlet and the outlet from top to bottom in the furnace body; one row of the nozzles are arranged at the set height of the furnace body, in addition, at least one row of the nozzles are arranged at the upper part and/or the lower part of the row of the nozzles, materials in the furnace body are heated by the rows of the nozzles arranged on the furnace body, different heating temperatures can be provided in the furnace body, steel parts are rapidly melted in the furnace body, but the melting furnace has a complex structure, the upper end of the furnace body is connected with a chimney, waste gas generated in the furnace is directly discharged, the temperature of the waste gas generated in the furnace is high, the environmental temperature is easily influenced, the energy-saving and environment-friendly requirements are not met, the waste gas waste heat recovery still adopts a waste heat boiler to generate electricity or generate steam at present, the equipment investment is high when the waste gas waste heat recovery is used for generating electricity, the requirements on operators are also high, the heat energy conversion efficiency is low, and more importantly, according to, the procedures are very complicated and are difficult to handle, and on the other hand, most smelting enterprises do not need steam in the production process, and the steam produced by the waste heat boiler is not well utilized and still is not suitable for the enterprises.
Disclosure of Invention
The invention aims to provide an environment-friendly and energy-saving melting furnace which has the advantages of high heat utilization rate, good energy-saving and environment-friendly effects, energy consumption saving, stable working process, long service life of equipment and the like.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides an environmental protection and energy saving melting furnace, is including melting district and hot-blast district, it includes the furnace body and is located the furnace hearth of furnace body below to melt the district, hot-blast district includes the hot-blast chamber, the top and the blast pipe intercommunication in hot-blast chamber, the hot-blast chamber is through the inner chamber intercommunication of discharging fume pipe and furnace body, the hot-blast intracavity is equipped with the heat absorption tuber pipe, the one end and the air-supply line intercommunication of heat absorption tuber pipe, the other end and the hot-blast main intercommunication of heat absorption tuber pipe, the inner chamber intercommunication of hot-blast main and furnace body.
Through adopting above-mentioned technical scheme, the air-supply line is connected with the heat absorption tuber pipe, normal atmospheric temperature air or oxygen that get into by the air-supply line carry to the furnace body in through heat absorption tuber pipe and hot-blast main and be used for combustion-supporting, the high temperature tail gas that the burning produced in the furnace body gets into the hot-blast chamber through discharging fume the pipe and carries out the heat transfer with the air in the heat absorption tuber pipe, make air or oxygen in the hot-blast main absorb the heat in the high temperature tail gas, reduce the heat that exhaust emission took away, when air or oxygen absorbed the heat in the tail gas and got into the furnace body and burn simultaneously, to thermal demand when can effectively reducing the fuel burning in the furnace body, realized directly utilizing heat in the tail gas, thereby reach.
The invention is further provided with: the heat absorption air pipe comprises a plurality of pipes, the upper end of the heat absorption air pipe is fixed in a hot air cavity through an air inlet distributor, the air inlet of the air inlet distributor is communicated with an air inlet pipe, the air outlet of the air inlet distributor is communicated with the heat absorption air pipe, the lower end of the heat absorption air pipe is communicated with the hot air pipe through an air outlet distributor, the air inlet of the air outlet distributor is communicated with the lower end of the heat absorption air pipe, and the air outlet of the air outlet distributor is communicated with the hot air pipe.
Through adopting above-mentioned technical scheme, the air inlet distributor is arranged in each heat absorption tuber pipe with the even distribution of air or the oxygen of normal atmospheric temperature, can effectively increase the area of contact of air or oxygen and high temperature tail gas in the heat absorption tuber pipe through setting up a plurality of heat absorption tuber pipes, improves the heat exchange efficiency and the heat transfer effect of air or oxygen and high temperature tail gas to improve the utilization ratio of heat energy in the high temperature tail gas, make energy-saving effect better.
The invention is further provided with: the hot-blast main is communicated with the inner cavity of the furnace body through an air inlet annular pipe, the air inlet annular pipe is fixed on the outer wall of the furnace body, and the air inlet annular pipe comprises an annular pipe air inlet connected with the hot-blast main and at least one annular pipe air outlet communicated with the inner cavity of the furnace body.
Through adopting above-mentioned technical scheme, the hot-blast main is arranged in carrying the air or the oxygen after heating in the heat absorption tuber pipe to the air inlet ring venturi tube, and the air inlet ring venturi tube is arranged in carrying air or oxygen to the inner chamber of furnace body.
The invention is further provided with: the annular pipe air outlets communicated with the inner cavity of the furnace body are four, the four annular pipe air outlets are communicated with the inner cavity of the furnace body through valves, and the four annular pipe air outlets are distributed on the air inlet annular pipe at the same intervals.
Through adopting above-mentioned technical scheme, four ring pipe air outlets let in air or oxygen from four directions in to the furnace body, make air or oxygen evenly distributed in the furnace body, effectively improve the contact efficiency of oxygen and fuel, combustion-supporting effect is better, and in addition, the air or the oxygen of a plurality of directions can blow off the interior powder of stove from a plurality of directions at the in-process that gets into the furnace body, further improve the effect of smelting of fuel combustion efficiency and raw materials.
The invention is further provided with: the air inlet distributor comprises an air inlet and a plurality of air outlets, a driving impeller is arranged in an inner cavity of the air inlet distributor, the driving impeller is fixed to the upper end of a rotating shaft, a scraper is fixedly arranged at the lower end of the rotating shaft and located at the bottom of a hot air cavity, and an ash removal port communicated with a furnace body is further arranged at the bottom of the hot air cavity.
Through adopting above-mentioned technical scheme, air or oxygen get into the air inlet distributor by the air-supply line in, air intake through the air inlet distributor blows to the drive impeller, the drive impeller is rotary motion under the wind-force effect, it is rotatory with drive impeller fixed connection's rotation axis, the rotatory in-process of rotation axis drives the scraper blade of hot-blast chamber bottom rotatory, the scraper blade is constantly with the sedimentary carbon dust of hot-blast intracavity at rotatory in-process, impurity such as dust scrapes to the deashing mouth, and further burn in getting into the furnace body through the deashing mouth, a large amount of carbon dust has been avoided, impurity deposition such as dust causes the jam in hot-blast intracavity, need not artifical clearance, sedimentary carbon dust simultaneously, have a large amount of combustible substances in the impurity such as dust, can get into the furnace body as fuel once more and carry out the.
The invention is further provided with: the inner cavities of the rotating shaft and the air inlet distributor and the air outlet distributor are hermetically connected, and the rotating shaft can rotate relative to the air inlet distributor and the air outlet distributor.
Through adopting above-mentioned technical scheme, with the equal sealing connection of rotation axis and air inlet distributor and the inner chamber of air-out distributor, can prevent effectively that the high temperature tail gas of hot-blast intracavity from bringing dust impurity etc. into air inlet distributor and air-out distributor inner chamber and causing the risk of jam, equipment working process is stable, and the security is high.
The invention is further provided with: the rotating shaft is evenly distributed with a plurality of hairbrushes, and the hairbrushes are made of high-temperature-resistant materials.
Through adopting above-mentioned technical scheme, evenly distributed's brush on the rotation axis is constantly scrubbed the inner wall in hot-blast chamber and the outer wall of heat absorption tuber pipe when the rotation axis is rotatory, can prevent effectively that impurities such as carbon dust, dust in the high temperature tail gas from attaching to the inner wall in hot-blast chamber and the outer wall of heat absorption tuber pipe and the problem that the heat conversion efficiency is low that causes, makes the heat utilization ratio in the high temperature tail gas remain at higher state throughout, makes the energy-concerving and environment-protective effect of equipment better.
The invention is further provided with: the hot air cavity and the furnace body are both made of refractory materials, and the outer walls of the hot air cavity and the furnace body are both provided with heat insulation layers made of heat insulation materials.
Through adopting above-mentioned technical scheme, the hot-blast chamber and the furnace body of making by refractory material can be stable work under the high temperature environment, and life is longer, in addition, sets up the heat preservation that insulation material made on the outer wall, can effectively reduce the temperature on the one hand and run off, and the energy saving consumes, and on the other hand can effectively reduce because of the temperature runs off the influence that the air caused ambient temperature.
The invention is further provided with: the furnace body top still is equipped with the feed inlet, furnace body bottom both sides still are equipped with discharge gate and row cinder notch respectively.
By adopting the technical scheme, the smelting raw materials and the fuel are added into the inner cavity of the furnace body through the feeding hole, the smelted product is discharged from the discharging hole, and the slag generated by smelting is discharged from the slag discharging hole.
The invention has the beneficial effects that:
1. according to the invention, the air inlet distributor in the hot air cavity is used for uniformly distributing air or oxygen at normal temperature to each heat absorption air pipe, and the contact area of the air or oxygen in the heat absorption air pipes and the high-temperature tail gas is increased by arranging the heat absorption air pipes in the hot air cavity, so that the heat exchange efficiency and the heat exchange effect of the air or oxygen and the high-temperature tail gas are improved, the heat utilization rate in the high-temperature tail gas is highest, and the energy-saving and environment-friendly effects of the equipment are better.
2. The hot air cavity has the function of automatically cleaning ash: utilize the wind-force that air or oxygen got into in the air inlet distributor by the air-supply line, blow the drive impeller, make the drive impeller be rotary motion under the wind-force effect, it is rotatory with drive impeller fixed connection's rotation axis to drive, the rotatory in-process of rotation axis drives the scraper blade of hot-blast chamber bottom rotatory, the scraper blade is at rotatory in-process constantly with the sedimentary carbon dust of hot-blast intracavity, impurity such as dust is scraped to the deashing mouth, and further burn in getting into the furnace body through the deashing mouth, a large amount of carbon dust has been avoided, impurity such as dust deposits and causes the jam in hot-blast intracavity, need not artifical clearance, simultaneously, sedimentary carbon dust, contain a large amount of combustible substances in the impurity such as dust, carry out the secondary and burn in getting into the furnace body, can effectively save fuel.
3. The wind heat intensity in the invention has self-cleaning function: through setting up the brush at the rotation axis, make the rotation axis constantly drive the brush when rotatory in-process and scrub the inner wall in hot-blast chamber and the outer wall of heat absorption tuber pipe, can effectively prevent that impurities such as carbon dust, dust in the high temperature tail gas from attaching to the inner wall in hot-blast chamber and the outer wall of heat absorption tuber pipe and the problem that the thermal conversion efficiency is low that causes, make the heat utilization ratio in the high temperature tail gas remain throughout at higher state, the thermal discharge that has significantly reduced.
4. The hot air cavity and the furnace body made of the refractory materials can work stably in a high-temperature environment, the service life is longer, in addition, the heat insulation layer made of the heat insulation materials is arranged on the outer wall, on one hand, the temperature loss can be effectively reduced, the energy consumption is saved, and on the other hand, the influence on the environment temperature caused by the temperature loss into the air can be effectively reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of an environment-friendly and energy-saving melting furnace according to the present invention.
FIG. 2 is a schematic cross-sectional view of an environment-friendly and energy-saving melting furnace according to the present invention.
Fig. 3 is a schematic sectional view taken along the line a in fig. 2.
In the figure, 1, the melting zone; 11. a furnace body; 111. a feed inlet; 112. a discharge port; 113. a slag discharge port; 12. a hearth; 2. a hot air zone; 21. a hot air cavity; 211. cleaning the ash hole; 212. a smoke exhaust pipe; 22. an exhaust pipe; 23. a heat absorption air pipe; 24. an air inlet pipe; 25. a hot air pipe; 26. an air intake distributor; 261. driving the impeller; 262. a rotating shaft; 263. a squeegee; 264. a brush; 27. an air outlet distributor; 28. an air inlet annular pipe.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Referring to fig. 1 to 3, an environment-friendly and energy-saving melting furnace comprises a melting area 1 and a hot air area 2, wherein the melting area 1 comprises a furnace body 11 and a furnace hearth 12 located below the furnace body 11, the hot air area 2 comprises a hot air chamber 21, the hot air chamber 21 is communicated with an exhaust pipe 22 through a smoke exhaust pipe 212, high-temperature tail gas generated by melting in the furnace body 11 passes through the hot air chamber 21 and is exhausted from the exhaust pipe 22 at the top of the hot air chamber 21, a product and waste slag after melting enter the furnace hearth 12 below the furnace body 11 and are exhausted, a heat absorption air pipe 23 is arranged in the hot air chamber 21, one end of the heat absorption air pipe 23 is communicated with an air inlet pipe 24, the other end of the heat absorption air pipe 23 is communicated with a hot air pipe 25, the hot air pipe 25 is communicated with an inner chamber of the furnace body 11, normal-temperature air or oxygen enters the heat absorption air pipe 23 through the air inlet pipe 24, and the normal-temperature air or, make the air or the oxygen of normal atmospheric temperature heated to high temperature back rethread hot-blast main 25 carry to the furnace body 11 in for combustion-supporting, the high temperature tail gas that the burning produced in the furnace body 11 gets into hot-blast chamber 21 again and carries out the heat transfer with the air in the heat absorption tuber pipe 23, make the air or the heat in the oxygen absorption high temperature tail gas in the hot-blast main 25, in order to reduce the heat that exhaust emission took away, air or oxygen get into the furnace body after being heated by high temperature tail gas and burn simultaneously, can effectively reduce the demand to the heat when burning to the internal fuel of furnace, thereby realized directly utilizing the heat in the tail gas, reach energy-conserving effect.
Further, the heat absorption air pipe 23 comprises a plurality of pipes, the upper end of the heat absorption air pipe 23 is fixed in the hot air cavity 21 through an air inlet distributor 26, an air inlet of the air inlet distributor 26 is communicated with the air inlet pipe 24, an air outlet of the air inlet distributor 26 is communicated with the heat absorption air pipe 23, the lower end of the heat absorption air pipe 23 is communicated with the hot air pipe 25 through an air outlet distributor 27, an air inlet of the air outlet distributor 27 is communicated with the lower end of the heat absorption air pipe 23, an air outlet of the air outlet distributor 27 is communicated with the hot air pipe 25, the air inlet distributor 26 is used for uniformly distributing the air or oxygen at normal temperature to each heat absorption air pipe 23, the contact area between the air or oxygen in the heat absorption air pipe 23 and the high temperature tail gas can be effectively increased through arranging the plurality of heat absorption air pipes 23, and therefore the heat exchange, thereby improving the utilization rate of heat energy in high-temperature tail gas and enabling the energy-saving effect to be better.
Further, the hot air pipe 25 is communicated with the inner cavity of the furnace body 11 through an air inlet annular pipe 28, the air inlet annular pipe 28 is fixed on the outer wall of the furnace body 11, the air inlet annular pipe 28 comprises an annular pipe air inlet connected with the hot air pipe 25 and at least one annular pipe air outlet communicated with the inner cavity of the furnace body 11, the hot air pipe 25 is used for conveying the air or oxygen heated in the heat absorption air pipe 23 to the air inlet annular pipe 28, the air inlet annular pipe 28 is used for conveying the air or oxygen to the inner cavity of the furnace body 11, in order to ensure that the air or oxygen entering the inner cavity of the furnace body 11 is fully contacted with furnace burden in the furnace body 11, the air inlet annular pipe 28 is provided with four annular pipe air outlets communicated with the inner cavity of the furnace body 11, the four annular pipe air outlets are all communicated with the inner cavity of the furnace body 11 through a valve, and are distributed on the air inlet annular pipe, guarantee that air or oxygen that get into in the air inlet ring pipe 28 lets in the inner chamber of furnace body 11 from four directions for air or oxygen evenly distributed in furnace body 11 effectively improves the contact efficiency of oxygen and fuel, and combustion-supporting effect is better, and in addition, the air or the oxygen of a plurality of directions can blow off the interior powder of stove from a plurality of directions at the in-process that gets into furnace body 11, further improve the effect of smelting of fuel combustion efficiency and raw materials.
Further, the air inlet distributor 26 includes an air inlet and a plurality of air outlets, a driving impeller 261 is disposed in an inner cavity of the air inlet distributor 26, the driving impeller is fixed at an upper end of the rotating shaft 262, a scraper 263 is fixedly disposed at a lower end of the rotating shaft 262, the scraper 263 is disposed at a bottom of the hot air cavity 21, an ash cleaning port 211 communicated with the furnace body 11 is further disposed at the bottom of the hot air cavity 21, air or oxygen enters the air inlet distributor 26 from the air inlet pipe 24 and is blown to the driving impeller 261 through the air inlet of the air inlet distributor 26, the driving impeller 261 rotates under the action of wind force to drive the rotating shaft 262 fixedly connected with the driving impeller 261 to rotate, the scraper 263 at the bottom of the hot air cavity 21 is driven to rotate in the rotating process of the rotating shaft 262, and impurities such as carbon powder and dust deposited in the hot air cavity 21 are continuously scraped to the ash cleaning port by the scraper 263 in, and get into furnace body 11 through the deashing mouth and further burn in, can effectively avoid on the one hand that impurity deposits such as a large amount of carbon powder, dust in the high temperature tail gas cause the jam in hot-blast intracavity, need not artifical clearance, have a large amount of combustible matters in the impurity such as the carbon powder of deposit, dust simultaneously, can get into the furnace body as fuel once more and carry out the secondary and burn, further the energy can be saved.
Further, the inner cavities of the rotating shaft 262 and the air inlet distributor 26 and the air outlet distributor 27 are connected in a sealing mode, the rotating shaft 262 can rotate relative to the air inlet distributor 26 and the air outlet distributor 27, the rotating shaft 262 and the inner cavities of the air inlet distributor 26 and the air outlet distributor 27 are connected in a sealing mode, the risk of blockage caused by the fact that dust, impurities and the like in high-temperature tail gas in the hot air cavity 21 enter the inner cavities of the air inlet distributor 26 and the air outlet distributor 27 can be effectively prevented, the working process of the equipment is stable, and safety is high.
Further, a plurality of brushes 264 are uniformly distributed on the rotating shaft 262, the brushes 264 are made of high-temperature-resistant materials, the rotating shaft 262 drives the brushes 264 to continuously scrub the inner wall of the hot air cavity 21 and the outer wall of the heat absorption air pipe 23 when rotating, the problem of low heat conversion efficiency caused by the fact that impurities such as carbon powder and dust in high-temperature tail gas are attached to the inner wall of the hot air cavity 21 and the outer wall of the heat absorption air pipe 23 can be effectively solved, the heat utilization rate in the high-temperature tail gas is always kept in a high state, and the energy-saving and environment-friendly effects of equipment are better.
Furthermore, hot-blast chamber 21 and furnace body 11 are made by refractory material, all are equipped with the heat preservation made by insulation material on its outer wall, and hot-blast chamber 21 and furnace body 11 made by refractory material bear higher temperature to can stably work under high temperature environment, life is longer, in addition, set up the heat preservation that insulation material made on the outer wall, can effectively reduce the temperature on the one hand and run off, and energy saving consumes, on the other hand can effectively reduce because of the influence that the temperature runs off and cause ambient temperature in the air.
Further, the top of the furnace body 11 is also provided with a feed inlet 111, two sides of the bottom of the furnace body are also respectively provided with a discharge port 112 and a slag discharge port 113, the feed inlet 111 is used for adding smelting raw materials and fuels into the inner cavity of the furnace body 11, the discharge port 112 is used for discharging products after smelting, and the slag discharge port 113 is used for discharging slag generated by smelting.
The working principle of the invention is as follows: air or oxygen at normal temperature enters an air inlet distributor 26 from an air inlet pipe 24 and is uniformly distributed to each heat absorption air pipe 23 through the air inlet distributor 26, meanwhile, high-temperature tail gas generated in the furnace body 11 of the melting zone 1 enters a hot air cavity 21 to exchange heat with the air or oxygen in the heat absorption air pipes 23, so that the air or oxygen in the heat absorption air pipes 23 absorbs a large amount of heat to become high-temperature air or oxygen, the high-temperature air or oxygen is then conveyed into an air inlet annular pipe 28 through a hot air pipe 25, the air inlet annular pipe 28 conveys the air or oxygen into the inner cavity of the furnace body 11 to support combustion, the air or oxygen in the hot air pipe 25 absorbs the heat in the high-temperature tail gas, the heat taken away by tail gas emission is effectively reduced, meanwhile, the air or oxygen is heated by the high-temperature tail gas and then enters the furnace body to be combusted, the requirement on the heat during the combustion of fuel in the furnace, reach energy-conserving effect, in addition, air or oxygen blow the drive impeller when getting into air inlet distributor 26, make drive impeller 261 do rotary motion under the wind-force effect, it is rotatory to drive rotation axis 262 with drive impeller 261 fixed connection, the rotatory in-process of rotation axis 262 drives the scraper blade 263 of hot-blast chamber 21 bottom rotatory, scraper blade 263 is rotatory at rotatory in-process constantly with the sedimentary carbon dust in hot-blast chamber 21, impurity such as dust scrapes to the deashing mouth, and further burn in getting into furnace body 11 through the deashing mouth, avoided a large amount of carbon dust, impurity such as dust deposit to cause the jam in hot-blast intracavity, need not artifical clearance, simultaneously, sedimentary carbon dust, contain a large amount of combustible substances in the impurity such as dust, get into the furnace body and carry out the secondary combustion, can effectively save fuel, the energy-concerving and environment-protective effects of equipment can.
Claims (10)
1. The utility model provides an environmental protection and energy saving melting furnace, is including melting district (1) and hot-blast district (2), it includes furnace body (11) and furnace pot (12) that are located furnace body (11) below to melt district (1), its characterized in that, hot-blast district (2) are including hot air chamber (21), the top and blast pipe (22) intercommunication in hot air chamber (21), the inner chamber intercommunication of hot air chamber (21) through discharging fume pipe (212) and furnace body (11), be equipped with heat absorption tuber pipe (23) in hot air chamber (21), the one end and air-supply line (24) intercommunication of heat absorption tuber pipe (23), the other end and hot-blast main (25) intercommunication of heat absorption tuber pipe (23), hot-blast main (25) and the inner chamber intercommunication of furnace body (11).
2. The environment-friendly and energy-saving melting furnace as set forth in claim 1, wherein: the heat absorption air pipe (23) comprises a plurality of pipes, the upper end of the heat absorption air pipe (23) is fixed in a hot air cavity (21) through an air inlet distributor (26), an air inlet of the air inlet distributor (26) is communicated with an air inlet pipe (24), an air outlet of the air inlet distributor (26) is communicated with the heat absorption air pipe (23), the lower end of the heat absorption air pipe (23) is communicated with a hot air pipe (25) through an air outlet distributor (27), an air inlet of the air outlet distributor (27) is communicated with the lower end of the heat absorption air pipe (23), and an air outlet of the air outlet distributor (27) is communicated with the hot air pipe (25).
3. The environment-friendly and energy-saving melting furnace as set forth in claim 2, wherein: the hot air pipe (25) is communicated with the inner cavity of the furnace body (11) through an air inlet annular pipe (28).
4. An environment-friendly and energy-saving melting furnace as claimed in claim 3, wherein: the air inlet annular pipe (28) is fixed on the outer wall of the furnace body (11), and the air inlet annular pipe (28) comprises an annular pipe air inlet connected with the hot air pipe (25) and at least one annular pipe air outlet communicated with the inner cavity of the furnace body (11).
5. The environment-friendly and energy-saving melting furnace as set forth in claim 4, wherein: the air inlet annular pipe (28) is provided with four air outlets communicated with the inner cavity of the furnace body (11), the four air outlets are communicated with the inner cavity of the furnace body (11) through valves, and the four air outlets are distributed on the air inlet annular pipe (28) at the same intervals.
6. The environment-friendly and energy-saving melting furnace as set forth in claim 2, wherein: the air inlet distributor (26) includes an air intake and a plurality of air outlet, be equipped with drive impeller (261) in the inside cavity of air inlet distributor (26), the upper end at rotation axis (262) is fixed to the drive impeller, the lower extreme of rotation axis (262) is fixed and is provided with scraper blade (263), scraper blade (263) are located the bottom in hot-blast chamber (21), the bottom in hot-blast chamber (21) still is equipped with deashing mouth (211) with furnace body (11) intercommunication.
7. The environment-friendly and energy-saving melting furnace as set forth in claim 6, wherein: the inner cavities of the rotating shaft (262) and the air inlet distributor (26) and the air outlet distributor (27) are hermetically connected, and the rotating shaft (262) can rotate relative to the air inlet distributor (26) and the air outlet distributor (27).
8. The environment-friendly and energy-saving melting furnace as set forth in claim 7, wherein: a plurality of hair brushes (264) are uniformly distributed on the rotating shaft (262), and the hair brushes (264) are made of high-temperature-resistant materials.
9. The environment-friendly and energy-saving melting furnace as set forth in claim 1, wherein: the hot air cavity (21) and the furnace body (11) are both made of refractory materials, and the outer walls of the hot air cavity and the furnace body are both provided with heat insulation layers made of heat insulation materials.
10. The environment-friendly and energy-saving melting furnace as set forth in claim 7, wherein: the furnace body (11) top still is equipped with feed inlet (111), furnace body bottom both sides still are equipped with discharge gate (112) and row cinder notch (113) respectively.
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Application publication date: 20210409 |