CN112880420B - Energy-saving and environment-friendly steel smelting device - Google Patents
Energy-saving and environment-friendly steel smelting device Download PDFInfo
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- CN112880420B CN112880420B CN202110038233.0A CN202110038233A CN112880420B CN 112880420 B CN112880420 B CN 112880420B CN 202110038233 A CN202110038233 A CN 202110038233A CN 112880420 B CN112880420 B CN 112880420B
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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
- F27D17/004—Systems for reclaiming waste heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
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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
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
An energy-saving and environment-friendly steel smelting processing device comprises an exhaust gas treatment box and a conveying cylinder; a heat exchange chamber, a gas collection chamber, a dust filtering chamber and an exhaust chamber are arranged in the waste gas treatment box; a plurality of groups of heat conduction branch pipes are vertically arranged in the heat exchange chamber, and a gas distribution pipe is arranged on the gas collecting pipe; the water delivery pipe is provided with a first water outlet pipe which is communicated with the heat exchange chamber; the waste gas treatment box is provided with a connecting pipe which is communicated with the heat conduction branch pipe and the air collecting chamber; the waste gas treatment box is provided with a gas pipe which is communicated with the gas collection chamber and the dust filtering chamber; the fixed cylinder is arranged in the dust filtering chamber; the filter bag is sleeved on the fixed cylinder, and a through hole is arranged on the waste gas treatment box; the exhaust fan is provided with an exhaust pipe, and the other end of the exhaust pipe is communicated with the exhaust chamber; the bottom of the smelting furnace body is provided with a slag collecting hopper, the slag collecting hopper is provided with a slag conveying pipe, and the conveying barrel is provided with a cooling device. The invention can recycle the heat in the hot waste gas and slag to reduce energy consumption, and can filter the waste gas to reduce pollution to air, thereby saving energy and protecting environment.
Description
Technical Field
The invention relates to the technical field of steel smelting, in particular to an energy-saving and environment-friendly steel smelting processing device.
Background
Iron and steel smelting is the general term of steel and iron metallurgical process, and iron produced in industry is divided into pig iron (carbon content is more than 2%) and steel (carbon content is less than 2%) according to carbon content; the most of modern ironmaking adopts blast furnace ironmaking, adopts direct reduction ironmaking method and electric furnace ironmaking method respectively, steelmaking mainly adopts pig iron made by blast furnace and sponge iron and scrap steel made by direct reduction ironmaking method as raw materials, and adopts different methods to make steel, and the basic production process is that iron ore is made into pig iron in the ironmaking furnace, pig iron is made into steel by different methods, and then steel ingot or continuous casting blank is made; the device has the advantages that a large amount of hot waste gas and blast furnace slag can be generated in the steel smelting process, the structure of the existing steel smelting processing device is simple, the function is single, the hot waste gas is usually directly discharged into the atmosphere, the blast furnace slag is directly discharged, the heat contained in the hot waste gas and the blast furnace slag is difficult to recycle, the energy conservation and the environment friendliness are not enough, the temperature of the blast furnace slag is high, operators nearby are easy to scald, and the improvement is to be carried out.
Disclosure of Invention
Object of the invention
In order to solve the technical problems in the background technology, the invention provides an energy-saving and environment-friendly steel smelting device which can recycle heat in hot waste gas and slag to reduce energy consumption, can filter the waste gas to reduce pollution to air, can effectively prevent nearby personnel from being scalded by cooling the slag, is convenient to output the slag, and has the advantages of simple operation, multiple functions, energy conservation and environment protection.
(II) technical scheme
The invention provides an energy-saving and environment-friendly steel smelting processing device which comprises a smelting furnace body, an exhaust gas treatment box, a conveying cylinder, a gas collecting pipe, a water pump, an exhaust fan, a fixed cylinder, a filter bag and a spiral conveying blade, wherein the exhaust fan is arranged on the lower side of the main body;
a heat exchange chamber, a gas collection chamber, a dust filtering chamber and an exhaust chamber are arranged in the waste gas treatment box, and a gas collection pipe is arranged above the waste gas treatment box; a plurality of groups of heat conduction branch pipes are vertically arranged in the heat exchange chamber, and a gas distribution pipe communicated with the heat conduction branch pipes is arranged on the gas collection pipe; the smelting furnace body is provided with an exhaust gas conveying pipe, and the other end of the exhaust gas conveying pipe is communicated with a gas collecting pipe; the water pump is provided with a water suction pipe and a water delivery pipe, the water delivery pipe is provided with a first water outlet pipe, the other end of the first water outlet pipe is communicated with the heat exchange chamber, and the waste gas treatment box is provided with a first water outlet pipe communicated with the heat exchange chamber;
the gas collection chamber is positioned below the heat exchange chamber, and a connecting pipe for communicating the heat conduction branch pipe and the gas collection chamber is arranged on the waste gas treatment box; the dust filtering chamber is positioned below the exhaust chamber, and the waste gas treatment box is provided with a gas transmission pipe which is communicated with the gas collecting chamber and the dust filtering chamber; the fixed cylinder is arranged in the dust filtering chamber and is provided with an opening; the filter bag is sleeved on the fixed cylinder, and a through hole for communicating the fixed cylinder with the exhaust chamber is arranged on the waste gas treatment box; the exhaust fan is arranged on the waste gas treatment box, an exhaust pipe is arranged on the exhaust fan, and the other end of the exhaust pipe is communicated with the exhaust chamber;
the bottom of the smelting furnace body is provided with a slag collecting hopper, a slag conveying pipe is arranged on the slag collecting hopper, the other end of the slag conveying pipe is communicated with a conveying cylinder, and a valve is arranged on the slag conveying pipe; a conveying shaft is transversely arranged in the conveying cylinder, and spiral conveying blades are arranged on the conveying shaft; the conveying cylinder is provided with a motor, the output end of the motor is connected with the conveying shaft, and the conveying cylinder is also provided with a cooling device for cooling slag.
Preferably, the waste gas treatment box is provided with a blower, and the blower is provided with a blower pipe; the blast pipe extends into the exhaust chamber, the bottom of the blast pipe is provided with an air jet pipe, and the air jet direction of the air jet pipe faces the through hole.
Preferably, the number of the through holes is multiple, and the air ejector tube is correspondingly provided with multiple groups.
Preferably, the exhaust gas treatment box is also provided with an exhaust gas purification box, the exhaust fan is provided with an exhaust pipe, and the other end of the exhaust pipe is communicated with the exhaust gas purification box.
An activated carbon adsorption device and an exhaust port are arranged in the exhaust gas purifying box, and the exhaust port and the exhaust pipe are positioned on the upper side and the lower side of the activated carbon adsorption device.
Preferably, the bottom of the waste gas treatment box is provided with a dust hopper, the dust hopper is provided with a dust discharging pipe, and the dust discharging pipe is provided with a valve.
Preferably, the cooling device comprises a second water outlet pipe, a first connecting box, a second connecting box, a fixed pipe and a second water outlet pipe;
the conveying cylinder is provided with an annular cavity, the second water outlet pipe is arranged on the water conveying pipe and is communicated with the annular cavity, and the first water outlet pipe and the second water outlet pipe are respectively provided with a valve; the first connecting box and the second connecting box are arranged in the conveying cylinder, the first connecting box is positioned at the input side of the conveying cylinder, and the second connecting box is positioned at the output side of the conveying cylinder; the conveying shaft is rotationally connected with the first connecting box and the second connecting box, and a water conveying channel is transversely arranged in the conveying shaft; the conveying shaft is also provided with a water inlet communicated with the first connecting box and a water outlet communicated with the second connecting box, the fixed pipe is communicated with the annular cavity and the first connecting box, and the second drain pipe is communicated with the second connecting box.
Preferably, the spiral conveying blade is provided with a heat conducting layer, a cavity is arranged in the spiral conveying blade, and the cavity is communicated with the water conveying channel.
Preferably, the conveying cylinder is provided with a slag discharging pipe, and the slag discharging pipe is positioned at the output side of the conveying cylinder.
The invention also provides a use method of the iron and steel smelting device, which comprises the following steps:
s1, smelting steel by a smelting furnace body, outputting hot waste gas generated in the smelting process through a waste gas conveying pipe, and collecting slag in a slag collecting hopper;
s2, uniformly dispersing hot waste gas into heat-conducting branch pipes by a gas collecting pipe, conveying aqueous solution into a heat exchange chamber by a water pump, and conducting heat in the waste gas into the aqueous solution by each heat-conducting branch pipe;
s3, collecting the waste gas subjected to heat exchange in a gas collection chamber, and conveying the waste gas into a dust filtering chamber by a gas conveying pipe;
s4, filtering the waste gas by the filter bag, collecting the filtered gas in an exhaust chamber, and exhausting the gas by the exhaust fan;
s5, conveying slag in the smelting furnace body into a conveying cylinder by a slag conveying pipe;
s6, enabling the conveying shaft to rotate by the motor, enabling the spiral conveying blades to rotate along with the conveying shaft and convey slag, and cooling the slag by the cooling device.
The technical scheme of the invention has the following beneficial technical effects:
the heat collecting pipes enable the hot waste gas to be evenly dispersed into the heat conducting branch pipes, the water pump conveys the water solution into the heat exchange chamber through the first water outlet pipe, each heat conducting branch pipe conducts heat in the waste gas to the first water outlet pipe in the water solution to output the water solution after heat absorption, and therefore the heat in the waste gas can be effectively recovered, and the heat exchange device is energy-saving and environment-friendly; the waste gas subjected to heat exchange is gathered in the gas collection chamber, the gas transmission pipe transmits the waste gas into the dust filtering chamber, the filter bag filters the waste gas, and the exhaust fan discharges the filtered gas, so that the pollution to the air is obviously reduced;
the slag conveying pipe conveys slag in the smelting furnace body into the conveying cylinder, the motor rotates the conveying shaft, and the spiral conveying blades rotate along with the conveying shaft and convey the slag; the water pump conveys the aqueous solution to the annular cavity through the second water outlet pipe, and the aqueous solution in the annular cavity absorbs heat carried by slag in the conveying cylinder; the fixed pipe carries the aqueous solution in the annular chamber to first junction box, aqueous solution gets into in the water delivery channel, in the rotation in-process of conveying axle, aqueous solution in the water delivery channel absorbs the heat that the slag carried, further improve cooling effect and cooling efficiency to the slag, aqueous solution after the heat absorption gathers in the second junction box and exports through the second drain pipe, slag discharge pipe is with the slag discharge after the cooling, can effectively absorb the heat in the slag, and can carry out effective cooling to the slag in order to prevent its near operating personnel of scalding, and realize carrying the slag, and easy operation, the function is various, excellent in use effect.
Drawings
Fig. 1 is a schematic structural view of an energy-saving and environment-friendly steel smelting processing device.
Fig. 2 is a schematic structural diagram of an exhaust gas treatment tank in an energy-saving and environment-friendly steel smelting processing device.
Fig. 3 is an enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic structural view of a slag conveying cylinder in an energy-saving and environment-friendly steel smelting processing device.
Fig. 5 is a schematic connection diagram of a conveying shaft, a first connecting box and a second connecting box in the energy-saving and environment-friendly steel smelting processing device.
Fig. 6 is a schematic structural view (side view) of a conveying cylinder in the energy-saving and environment-friendly steel smelting processing device.
Reference numerals: 1. a smelting furnace body; 2. an exhaust gas treatment tank; 3. a delivery cylinder; 4. an exhaust gas delivery pipe; 5. a slag collecting hopper; 6. a slag conveying pipe; 7. a gas collecting tube; 8. a heat conduction branch pipe; 9. a gas distribution pipe; 10. a heat exchange chamber; 11. a plenum chamber; 12. a dust filtering chamber; 13. an exhaust chamber; 14. a connecting pipe; 15. a water pump; 16. a water pumping pipe; 17. a water pipe; 18. a first water outlet pipe; 19. a second water outlet pipe; 20. a gas pipe; 21. an exhaust fan; 22. an exhaust pipe; 23. a fixed cylinder; 24. a filter bag; 25. a through hole; 26. a dust hopper; 27. a dust exhaust pipe; 28. a blower; 29. a blast pipe; 30. a gas lance; 31. a first drain pipe; 32. a motor; 33. a conveying shaft; 34. a slag discharge pipe; 35. an annular cavity; 36. a first connection box; 37. a second connection box; 38. a fixed tube; 39. spiral conveying blades; 40. a water inlet; 41. a water outlet; 42. a second drain pipe; 43. a water delivery channel.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
As shown in fig. 1-6, the invention provides an energy-saving and environment-friendly steel smelting processing device, which comprises a smelting furnace body 1, an exhaust gas treatment box 2, a conveying cylinder 3, a gas collecting tube 7, a water pump 15, an exhaust fan 21, a fixed cylinder 23, a filter bag 24 and a spiral conveying blade 39;
a heat exchange chamber 10, a gas collection chamber 11, a dust filtering chamber 12 and an exhaust chamber 13 are arranged in the waste gas treatment box 2, and a gas collection pipe 7 is arranged above the waste gas treatment box 2; a plurality of groups of heat conduction branch pipes 8 are vertically arranged in the heat exchange chamber 10, and a gas distribution pipe 9 communicated with the heat conduction branch pipes 8 is arranged on the gas collection pipe 7; the smelting furnace body 1 is provided with an exhaust gas conveying pipe 4, and the other end of the exhaust gas conveying pipe 4 is communicated with a gas collecting pipe 7; the water pump 15 is provided with a water suction pipe 16 and a water delivery pipe 17, the water delivery pipe 17 is provided with a first water outlet pipe 18, the other end of the first water outlet pipe 18 is communicated with the heat exchange chamber 10, and the waste gas treatment box 2 is provided with a first water outlet pipe 31 communicated with the heat exchange chamber 10;
the gas collection chamber 11 is positioned below the heat exchange chamber 10, and a connecting pipe 14 which is communicated with the heat conduction branch pipe 8 and the gas collection chamber 11 is arranged on the waste gas treatment box 2; the dust filtering chamber 12 is positioned below the exhaust chamber 13, and the exhaust gas treatment box 2 is provided with a gas transmission pipe 20 which is communicated with the gas collecting chamber 11 and the dust filtering chamber 12; the fixed cylinder 23 is arranged in the dust filtering chamber 12, and an opening is arranged on the fixed cylinder 23; the filter bag 24 is sleeved on the fixed cylinder 23, and the exhaust gas treatment box 2 is provided with a through hole 25 which is communicated with the fixed cylinder 23 and the exhaust chamber 13; the exhaust fan 21 is arranged on the waste gas treatment box 2, the exhaust fan 21 is provided with an exhaust pipe 22, and the other end of the exhaust pipe 22 is communicated with the exhaust chamber 13;
the bottom of the smelting furnace body 1 is provided with a slag collecting hopper 5, the slag collecting hopper 5 is provided with a slag conveying pipe 6, the other end of the slag conveying pipe 6 is communicated with the conveying cylinder 3, and the slag conveying pipe 6 is provided with a valve; a conveying shaft 33 is transversely arranged in the conveying cylinder 3, and a spiral conveying blade 39 is arranged on the conveying shaft 33; the conveying cylinder 3 is provided with a motor 32, and the output end of the motor 32 is connected with a conveying shaft 33;
the conveying cylinder 3 is also provided with a cooling device for cooling slag, and the cooling device comprises a second water outlet pipe 19, a first connecting box 36, a second connecting box 37, a fixed pipe 38 and a second water outlet pipe 42; the conveying cylinder 3 is provided with an annular cavity 35, the second water outlet pipe 19 is arranged on the water conveying pipe 17 and is communicated with the annular cavity 35, and valves are respectively arranged on the first water outlet pipe 18 and the second water outlet pipe 19; the first connection box 36 and the second connection box 37 are provided inside the transport cylinder 3, and the first connection box 36 is located on the input side of the transport cylinder 3, and the second connection box 37 is located on the output side of the transport cylinder 3; the conveying shaft 33 is rotatably connected with the first connecting box 36 and the second connecting box 37, and a water conveying channel 43 is transversely arranged in the conveying shaft 33; the conveying shaft 33 is also provided with a water inlet 40 communicated with the first connecting box 36 and a water outlet 41 communicated with the second connecting box 37, the fixed pipe 38 is communicated with the annular cavity 35 and the first connecting box 36, and the second drain pipe 42 is communicated with the second connecting box 37.
In an alternative embodiment, the exhaust gas treatment tank 2 is provided with a blower 28, and the blower 28 is provided with a blower tube 29; the blast pipe 29 extends into the exhaust chamber 13, an air jet pipe 30 is arranged at the bottom of the blast pipe 29, and the air jet direction of the air jet pipe 30 faces the through hole 25; the number of the through holes 25 is multiple, and the air ejector 30 is correspondingly provided with multiple groups. In operation, when the filter bag 24 needs to be cleaned, the blower 28 conveys external air into the blower tube 29, and each air jet tube 30 jets air in the fixed cylinder 23 to blow off dust particles attached to the filter bag 24, so as to effectively prevent the filter holes on the filter bag 24 from being blocked, and the filter bag cleaning device is simple in operation and convenient to use, and is beneficial to preventing the filter holes from being blocked so as to influence the dust filtering efficiency and the dust filtering effect.
In an alternative embodiment, the exhaust gas treatment tank 2 is further provided with an exhaust gas purification tank, the exhaust fan 21 is provided with an exhaust pipe, and the other end of the exhaust pipe is communicated with the exhaust gas purification tank; an activated carbon adsorption device and an exhaust port are arranged in the exhaust gas purifying box, and the exhaust port and the exhaust pipe are positioned on the upper side and the lower side of the activated carbon adsorption device. In operation, the waste gas after dust filtration enters the waste gas purifying box, and the activated carbon adsorption device adsorbs and purifies the waste gas, thereby being beneficial to improving the waste gas treatment effect and reducing the pollution to the air.
In an alternative embodiment, the bottom of the exhaust gas treatment tank 2 is provided with a dust hopper 26, the dust hopper 26 is provided with a dust discharge pipe 27, and the dust discharge pipe 27 is provided with a valve. The filtered dust is collected in the dust hopper 26, and the dust is discharged by the dust discharge pipe 27.
In an alternative embodiment, the heat conducting layer is arranged on the spiral conveying blades 39, the cavity is arranged in the spiral conveying blades 39 and is communicated with the water conveying channel 43, and the water solution in the water conveying channel 43 enters the cavity in the spiral conveying blades 39, so that the cooling efficiency of blast furnace slag is improved.
In an alternative embodiment, the delivery cylinder 3 is provided with a slag discharge pipe 34, and the slag discharge pipe 34 is located at the output side of the delivery cylinder 3.
The invention also provides a use method of the iron and steel smelting device, which comprises the following steps:
s1, smelting steel by a smelting furnace body 1, outputting hot waste gas generated in the smelting process through a waste gas conveying pipe 4, and collecting slag in a slag collecting hopper 5;
s2, uniformly dispersing hot waste gas into heat-conducting branch pipes 8 by a gas collecting pipe 7, conveying aqueous solution into a heat exchange chamber 10 by a water pump 15, and conducting heat in the waste gas into the aqueous solution by each heat-conducting branch pipe 8;
s3, collecting the waste gas subjected to heat exchange in a gas collection chamber 11, and conveying the waste gas into a dust filtering chamber 12 by a gas conveying pipe 20;
s4, filtering the waste gas by the filter bag 24, collecting the filtered gas in the exhaust chamber 13, and exhausting the gas by the exhaust fan 21;
s5, conveying slag in the smelting furnace body 1 into the conveying cylinder 3 by the slag conveying pipe 6;
s6, the motor 32 rotates the conveying shaft 33, the spiral conveying blades 39 rotate along with the conveying shaft, slag is conveyed, and the cooling device cools the slag.
In the invention, when the smelting furnace is used, the smelting furnace body 1 is used for smelting steel, hot waste gas generated in the smelting process is output through the waste gas conveying pipe 4, the gas collecting pipe 7 is used for uniformly dispersing the hot waste gas into the heat-conducting branch pipes 8, the water pump 15 is used for conveying the water solution into the heat exchange chamber 10 through the first water outlet pipe 18, each heat-conducting branch pipe 8 is used for conducting heat in the waste gas to the first water outlet pipe 31 in the water solution to output the water solution after heat absorption, so that the heat in the waste gas can be effectively recovered, and the energy conservation and the environmental protection are realized; the waste gas subjected to heat exchange is gathered in the gas collection chamber 11, the gas transmission pipe 20 transmits the waste gas into the dust filtering chamber 12, the filter bag 24 filters the waste gas, the filtered gas is gathered in the gas exhaust chamber 13, the exhaust fan 21 discharges the gas, and the pollution to the air is obviously reduced;
the blast furnace slag generated in the smelting process is gathered in a slag collecting hopper 5, and a slag conveying pipe 6 conveys slag in a smelting furnace body 1 into a conveying cylinder 3; the motor 32 rotates the conveying shaft 33, and the spiral conveying blade 39 rotates along with the rotation and conveys slag; in the slag conveying process, the water pump 15 conveys the water solution into the annular cavity 35 through the second water outlet pipe 19, and the water solution in the annular cavity 35 absorbs heat carried by slag in the conveying cylinder 3; the fixed pipe 38 carries the aqueous solution in the annular chamber 35 to first junction box 36, aqueous solution gets into in the water delivery channel 43, in the rotation in-process of conveying axle 33, aqueous solution in the water delivery channel 43 absorbs the heat that the slag carried, further improve cooling effect and cooling efficiency to the slag, the aqueous solution after the heat absorption gathers in second junction box 37 and exports through second drain pipe 42, slag discharge pipe 34 is with the slag after the cooling, can effectively absorb the heat in the slag, and can effectively cool down the slag in order to prevent its near operating personnel of scald, and realize carrying of slag, easy operation, the function is various, excellent in use effect.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (9)
1. The energy-saving and environment-friendly steel smelting processing device is characterized by comprising a smelting furnace body (1), an exhaust gas treatment box (2), a conveying cylinder (3), a gas collecting pipe (7), a water pump (15), an exhaust fan (21), a fixed cylinder (23), a filter bag (24) and a spiral conveying blade (39);
a heat exchange chamber (10), a gas collection chamber (11), a dust filtering chamber (12) and an exhaust chamber (13) are arranged in the waste gas treatment box (2), and a gas collection pipe (7) is arranged above the waste gas treatment box (2); a plurality of groups of heat conduction branch pipes (8) are vertically arranged in the heat exchange chamber (10), and a gas distribution pipe (9) communicated with the heat conduction branch pipes (8) is arranged on the gas collection pipe (7); an exhaust gas conveying pipe (4) is arranged on the smelting furnace body (1), and the other end of the exhaust gas conveying pipe (4) is communicated with a gas collecting pipe (7); a water suction pipe (16) and a water delivery pipe (17) are arranged on the water pump (15), a first water outlet pipe (18) is arranged on the water delivery pipe (17), the other end of the first water outlet pipe (18) is communicated with the heat exchange chamber (10), and a first water outlet pipe (31) communicated with the heat exchange chamber (10) is arranged on the waste gas treatment box (2);
the gas collection chamber (11) is positioned below the heat exchange chamber (10), and a connecting pipe (14) communicated with the heat conduction branch pipe (8) and the gas collection chamber (11) is arranged on the waste gas treatment box (2); the dust filtering chamber (12) is positioned below the exhaust chamber (13), and the waste gas treatment box (2) is provided with a gas pipe (20) which is communicated with the gas collecting chamber (11) and the dust filtering chamber (12); the fixed cylinder (23) is arranged in the dust filtering chamber (12), and an opening is arranged on the fixed cylinder (23); the filter bag (24) is sleeved on the fixed cylinder (23), and a through hole (25) for communicating the fixed cylinder (23) with the exhaust chamber (13) is arranged on the waste gas treatment box (2); the exhaust fan (21) is arranged on the waste gas treatment box (2), the exhaust fan (21) is provided with an exhaust pipe (22), and the other end of the exhaust pipe (22) is communicated with the exhaust chamber (13);
the bottom of the smelting furnace body (1) is provided with a slag collecting hopper (5), the slag collecting hopper (5) is provided with a slag conveying pipe (6), the other end of the slag conveying pipe (6) is communicated with the conveying cylinder (3), and the slag conveying pipe (6) is provided with a valve; a conveying shaft (33) is transversely arranged in the conveying cylinder (3), and spiral conveying blades (39) are arranged on the conveying shaft (33); a motor (32) is arranged on the conveying cylinder (3), the output end of the motor (32) is connected with a conveying shaft (33), and a cooling device for cooling slag is also arranged on the conveying cylinder (3); the cooling device comprises a second water outlet pipe (19), a first connecting box (36), a second connecting box (37), a fixed pipe (38) and a second water outlet pipe (42);
an annular cavity (35) is arranged on the conveying cylinder (3), a second water outlet pipe (19) is arranged on the water conveying pipe (17) and is communicated with the annular cavity (35), and valves are respectively arranged on the first water outlet pipe (18) and the second water outlet pipe (19); the first connecting box (36) and the second connecting box (37) are arranged in the conveying cylinder (3), the first connecting box (36) is positioned on the input side of the conveying cylinder (3), and the second connecting box (37) is positioned on the output side of the conveying cylinder (3); the conveying shaft (33) is rotationally connected with the first connecting box (36) and the second connecting box (37), and a water conveying channel (43) is transversely arranged in the conveying shaft (33); the conveying shaft (33) is also provided with a water inlet (40) communicated with the first connecting box (36) and a water outlet (41) communicated with the second connecting box (37), the fixed pipe (38) is communicated with the annular cavity (35) and the first connecting box (36), and the second drain pipe (42) is communicated with the second connecting box (37).
2. The energy-saving and environment-friendly steel smelting processing device according to claim 1, wherein a blower (28) is arranged on the waste gas treatment box (2), and a blower pipe (29) is arranged on the blower (28); the blast pipe (29) extends into the exhaust chamber (13), the bottom of the blast pipe (29) is provided with an air jet pipe (30), and the air jet direction of the air jet pipe (30) faces the through hole (25).
3. The energy-saving and environment-friendly steel smelting device according to claim 2, wherein the number of the through holes (25) is multiple, and the air ejector tube (30) is correspondingly provided with multiple groups.
4. The energy-saving and environment-friendly steel smelting processing device according to claim 1, wherein the waste gas treatment box (2) is further provided with a waste gas purifying box, the exhaust fan (21) is provided with an exhaust pipe, and the other end of the exhaust pipe is communicated with the waste gas purifying box.
5. The energy-saving and environment-friendly steel smelting processing device according to claim 4, wherein the activated carbon adsorption device and the exhaust port are arranged in the exhaust gas purifying box, and the exhaust port and the exhaust pipe are positioned on the upper side and the lower side of the activated carbon adsorption device.
6. The energy-saving and environment-friendly steel smelting processing device according to claim 1, wherein a dust collecting hopper (26) is arranged at the bottom of the waste gas treatment box (2), a dust exhaust pipe (27) is arranged on the dust collecting hopper (26), and a valve is arranged on the dust exhaust pipe (27).
7. The energy-saving and environment-friendly steel smelting processing device according to claim 1, wherein the spiral conveying blade (39) is provided with a heat conducting layer, a cavity is arranged in the spiral conveying blade (39), and the cavity is communicated with the water conveying channel (43).
8. The energy-saving and environment-friendly steel smelting processing device according to claim 1, wherein the slag discharging pipe (34) is arranged on the conveying cylinder (3), and the slag discharging pipe (34) is positioned on the output side of the conveying cylinder (3).
9. A method of using an energy-saving and environment-friendly steel smelting device, comprising the energy-saving and environment-friendly steel smelting device according to any one of claims 1-8, and further comprising the steps of:
s1, smelting steel by a smelting furnace body (1), outputting hot waste gas generated in the smelting process through a waste gas conveying pipe (4), and collecting slag in a slag collecting hopper (5);
s2, uniformly dispersing hot waste gas into heat conduction branch pipes (8) by gas collecting pipes (7), conveying aqueous solution into a heat exchange chamber (10) by a water pump (15), and conducting heat in the waste gas into the aqueous solution by each heat conduction branch pipe (8);
s3, collecting the waste gas subjected to heat exchange in a gas collection chamber (11), and conveying the waste gas into a dust filtering chamber (12) by a gas conveying pipe (20);
s4, filtering the waste gas by using a filter bag (24), collecting the filtered gas in an exhaust chamber (13), and exhausting the gas by using an exhaust fan (21);
s5, conveying slag in the smelting furnace body (1) into a conveying cylinder (3) through a slag conveying pipe (6);
s6, a motor (32) rotates a conveying shaft (33), a spiral conveying blade (39) rotates along with the conveying shaft to convey slag, and a cooling device cools the slag.
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