CN211311510U - Electric furnace steelmaking flue gas treatment system - Google Patents
Electric furnace steelmaking flue gas treatment system Download PDFInfo
- Publication number
- CN211311510U CN211311510U CN201922345685.4U CN201922345685U CN211311510U CN 211311510 U CN211311510 U CN 211311510U CN 201922345685 U CN201922345685 U CN 201922345685U CN 211311510 U CN211311510 U CN 211311510U
- Authority
- CN
- China
- Prior art keywords
- flue gas
- smoke
- pipe
- deep
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- Y02P10/20—Recycling
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Furnace Details (AREA)
Abstract
The utility model discloses an electric furnace steelmaking flue gas treatment system, which comprises an electric furnace, a scrap steel preheating bed, an air-water heat exchange bag and flue gas purification equipment which are arranged in sequence, wherein the scrap steel preheating bed is provided with a flue gas inlet pipe group and a flue gas outlet pipe group, the air-water heat exchange bag is provided with a water inlet pipe, a water outlet pipe, a flue gas inlet pipe and a flue gas outlet pipe, the air-water heat exchange bag is also connected with a scrap steel cleaning machine, the scrap steel cleaning machine is provided with a spray liquid tank, a reagent tank and a hot water tank connected with the water outlet pipe, and the spray liquid tank is respectively connected with the hot water tank and the; the scrap steel preheating bed comprises a shell and a conveying belt, the smoke inlet pipe group comprises a smoke direct exhaust pipe and a smoke deep exhaust pipe, the smoke deep exhaust pipe is connected with a smoke deep exhaust plate, and the smoke deep exhaust plate is provided with a smoke flowing groove and a smoke exhaust hole; the flue gas deep discharge plate is used for guiding the flue gas to the interior of the scrap steel crushed aggregates, so that the scrap steel crushed aggregates can be better heated everywhere, and the exhaust smoke of the scrap steel preheating bed is continuously used for heating the water for the scrap steel cleaning machine, thereby being beneficial to improving the cleaning effect of the scrap steel.
Description
Technical Field
The utility model relates to a smelting equipment technical field, concretely relates to electric stove steelmaking flue gas processing system.
Background
An electric furnace is also called an electric arc furnace, and is common production equipment of smelting enterprises, as is well known, the electric furnace generally uses scrap steel scrap as a raw material for smelting, a large amount of flue gas with high temperature can be generated in the smelting process, if direct treatment and emission are not utilized, energy waste can be caused, so the flue gas is usually introduced into a scrap steel preheating bed for preheating the scrap steel at present, and further the electric energy of the electric furnace is saved.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the background art, the utility model aims to provide an electric stove steelmaking flue gas processing system, it has effectively solved the problem that exists among the background art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an electric furnace steelmaking flue gas treatment system comprises an electric furnace, a scrap preheating bed, an air-water heat exchange bag and flue gas purification equipment which are sequentially arranged, wherein a discharge port of the scrap preheating bed is connected with a feed port of the electric furnace, a flue gas pipe is arranged on the electric furnace, the scrap preheating bed is provided with a flue gas inlet pipe group and a flue gas exhaust pipe group, the air-water heat exchange bag is provided with a water inlet pipe, a water outlet pipe, a flue gas inlet pipe and a flue gas outlet pipe, the flue gas inlet pipe group is connected with the flue gas pipe, the flue gas exhaust pipe group is connected with the flue gas inlet pipe, and the flue gas outlet pipe is connected with the flue gas purification equipment; the gas-water heat exchange bag is also connected with a waste steel cleaning machine, specifically, a hot water tank is arranged on the waste steel cleaning machine and is connected with the water outlet pipe, a spray liquid tank and a reagent tank are also arranged on the waste steel cleaning machine, the spray liquid tank is respectively communicated with the hot water tank and the reagent tank through a first inlet pipe and a second inlet pipe, and a discharge port of the waste steel cleaning machine is connected with a feed port of a waste steel preheating bed;
the scrap steel preheating bed further comprises a shell and a conveying belt arranged in the shell, the smoke inlet pipe group comprises at least one row of smoke direct exhaust pipes and at least one row of smoke deep exhaust pipes communicated with the smoke pipe, the outlet of each smoke direct exhaust pipe is located on the inner top wall of the shell, the outlet side of each smoke deep exhaust pipe is connected with a smoke deep exhaust plate, the smoke deep exhaust plates are located above the conveying belt and arranged along the length direction of the conveying belt, and the smoke deep exhaust plates are provided with smoke overflowing grooves corresponding to the smoke deep exhaust pipes one to one and smoke exhaust holes communicated with the smoke overflowing grooves; the smoke exhaust pipe group comprises a plurality of smoke exhaust pipes arranged at the lower part of the shell.
Further, the gas-water heat exchange bag comprises an outer barrel and an inner barrel which are coaxially arranged, a water inlet pipe and a water outlet pipe are respectively communicated with the inner barrel and the outer barrel, the left side of the inner barrel is opened, the gas-water heat exchange bag further comprises a flue gas heat exchange section, an inlet and an outlet of the flue gas heat exchange section are respectively connected with a flue gas inlet pipe and a flue gas outlet pipe, and the flue gas heat exchange section comprises a first spiral pipe section and a second spiral pipe section which are respectively arranged in the inner barrel and the outer barrel.
Further, the flue gas purification equipment comprises a cyclone dust collector and an absorption tower.
Further, the scrap steel cleaning machine comprises a machine body and a spraying cover, a spraying conveying belt is arranged on the machine body, the hot water tank, the spraying liquid tank and the chemical box are all arranged on the spraying cover, a plurality of nozzles towards the spraying conveying belt are further arranged on the spraying cover, and the nozzles are connected with the spraying liquid tank through a liquid conveying pipeline.
Further, the length direction of the smoke deep discharge plate is parallel to the length direction of the conveying belt, the height direction of the smoke deep discharge plate is perpendicular to the belt surface of the conveying belt, and a gap of 1-2mm is formed between the lower edge of the smoke deep discharge plate and the belt surface of the conveying belt.
Furthermore, a triangular prism-shaped flow guide block is fixedly arranged on one side of the smoke deep discharge plate close to the feed inlet of the scrap steel preheating bed.
Furthermore, the material of the flow guide block is tungsten steel.
Furthermore, the flue gas overflowing grooves respectively correspond to two groups of smoke exhaust holes, and the two groups of smoke exhaust holes are respectively positioned on the front side and the rear side of the deep flue gas discharging plate.
The utility model discloses following beneficial technological effect has:
the utility model discloses in used the flue gas deep row board come the effectual water conservancy diversion of high temperature flue gas to inside the scrap steel crushed aggregates of quilt carried for the scrap steel crushed aggregates can be better everywhere by the flue gas heating, the effectual heat that has utilized in the flue gas, the waste steel preheating bed in addition discharge fume and continue to be used for heating the water of scrap steel cleaning machine, also be favorable to improving the cleaning performance of scrap steel when further utilizing flue gas heat energy, have very strong practicality.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a steel scrap preheating bed according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of an air-water heat exchange pack according to an embodiment of the present invention;
fig. 4 is a schematic view of an internal structure of a deep smoke exhaust plate according to an embodiment of the present invention;
fig. 5 is a top view of the deep smoke exhaust plate according to the embodiment of the present invention.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-5, the electric furnace steelmaking flue gas processing system described in this embodiment includes an electric furnace 1, a steel scrap preheating bed 2, a gas-water heat exchange bag 3, and a flue gas purification device 4, which are sequentially arranged, a discharge port of the steel scrap preheating bed 2 is connected to a feed port of the electric furnace 1, the electric furnace 1 is provided with a flue gas pipe 5, the steel scrap preheating bed 2 is provided with a flue gas inlet pipe group 6 and a flue gas outlet pipe group 7, the gas-water heat exchange bag 3 is provided with a water inlet pipe 8, a water outlet pipe 9, a flue gas inlet pipe 10, and a flue gas outlet pipe 11, the flue gas inlet pipe group 6 is connected to the flue gas pipe 5, the flue gas outlet pipe group 7 is connected to the flue gas inlet pipe 10, and; the air-water heat exchange bag 3 is also connected with a waste steel cleaning machine 12, specifically, a hot water tank 13 is arranged on the waste steel cleaning machine 12, the hot water tank 13 is connected with a water outlet pipe 9, a spray liquid tank 14 and a chemical agent tank 15 are also arranged on the waste steel cleaning machine 12, the spray liquid tank 14 is respectively communicated with the hot water tank 13 and the chemical agent tank 15 through a first inlet pipe 16 and a second inlet pipe 17, and a discharge port of the waste steel cleaning machine 12 is connected with a feed port of the waste steel preheating bed 2;
the waste steel preheating bed 2 also comprises a shell 18 and a conveying belt 19 arranged in the shell 18, the smoke inlet pipe group 6 comprises at least one row of smoke direct exhaust pipes 20 and at least one row of smoke deep exhaust pipes 21 which are communicated with the smoke pipe 5, the outlet of the smoke direct exhaust pipes 20 is positioned on the inner top wall of the shell 18 and is mainly used for heating the surface and the upper layer of waste steel crushed aggregates on the conveying belt 19, the outlet side of the smoke deep exhaust pipes 21 is connected with smoke deep exhaust plates 22, the upper edges of the smoke deep exhaust plates 22 are fixed on the inner top wall of the shell 18 through screws or welding, the smoke deep exhaust plates 22 are positioned above the conveying belt 19 and are arranged along the length direction of the conveying belt 19, the smoke deep exhaust plates 22 are provided with smoke passing grooves 23 which are in one-to-one correspondence with the smoke deep exhaust pipes 21 and smoke discharge holes 24 which are communicated with the smoke passing grooves 23, each smoke passing groove 23 corresponds to two groups of smoke discharge holes 24, and, the smoke deep discharge plate 22 is matched with the smoke flowing groove 23 and the smoke exhaust hole 24 and is mainly used for heating the scrap steel crushed aggregates on the lower layer; the smoke exhaust duct group 7 includes a plurality of smoke exhaust ducts 25 provided at a lower portion of the casing 18.
The air-water heat exchange package 3 comprises an outer cylinder 26 and an inner cylinder 27 which are coaxially arranged, a water inlet pipe 8 and a water outlet pipe 9 are respectively communicated with the inner cylinder 27 and the outer cylinder 26, the water inlet pipe 8 and the water outlet pipe 9 are respectively connected with a water replenishing pump 28 and a water suction pump 29, the left side of the inner cylinder 27 is provided with an opening, the air-water heat exchange package 3 further comprises a flue gas heat exchange section, the inlet and the outlet of the flue gas heat exchange section are respectively connected with a flue gas inlet pipe 10 and a flue gas outlet pipe 11, the flue gas heat exchange section comprises a first spiral pipe section 30 and a second spiral pipe section 31 which are respectively arranged in the inner cylinder 27 and the outer cylinder 26, the first spiral pipe section 30 and the second spiral pipe section 31 not only increase the heat exchange area of flue gas, but also increase the.
The flue gas purification equipment 4 comprises a cyclone dust collector 32 and an absorption tower 33, flue gas in the smoke outlet pipe 11 firstly enters the cyclone dust collector 32 and then enters the absorption tower 33, and induced draft fans are arranged between the cyclone dust collector 32 and the gas-water heat exchange bag 3 and between the cyclone dust collector 32 and the absorption tower 33.
The scrap steel cleaning machine 12 comprises a machine body 34 and a spraying cover 35, a spraying conveying belt 36 is arranged on the machine body 34, the hot water tank 13, the spraying liquid tank 14 and the chemical box 15 are all arranged on the spraying cover 35, a plurality of nozzles (not shown) facing the spraying conveying belt 36 are further arranged on the spraying cover 35, the nozzles are connected with the spraying liquid tank 14 through a liquid conveying pipeline, and a pressure pump is arranged on the liquid conveying pipeline to ensure the liquid outlet pressure of the nozzles.
The length direction of the smoke deep discharge plate 22 is parallel to the length direction of the conveying belt 19, the height direction of the smoke deep discharge plate 22 is perpendicular to the belt surface of the conveying belt 19, and a gap of 1-2mm is formed between the lower edge of the smoke deep discharge plate 22 and the belt surface of the conveying belt 19, so that friction between the smoke deep discharge plate and the conveying belt 1 is avoided.
The deep gas discharging plate 22 is further welded with a triangular prism-shaped flow guide block 37 on one side close to the feed inlet of the waste steel preheating bed 2, the flow guide block 37 can effectively guide waste steel crushed aggregates to flow to two sides of the deep gas discharging plate 22, the flow guide block 37 is made of tungsten steel, the tungsten steel is high in strength and good in wear resistance, and the service life of the flow guide block 37 can be effectively guaranteed.
The working process of the embodiment is as follows:
the flue gas exhausted by the electric furnace 1 enters the flue gas straight exhaust pipe 21 and the flue gas deep exhaust pipe 22 through the flue gas pipe 5, the scrap steel on the conveying belt 19 is heated, wherein part of the flue gas flows to the smoke exhaust hole 24 through the flue gas flowing groove 3 on the flue gas deep exhaust plate 22 to be exhausted, the scrap steel on the lower layer can absorb the heat of the flue gas, the flue gas after heat release in the scrap steel preheating bed 2 enters the smoke inlet pipe 10 on the gas-water heat exchange bag 3 through the smoke exhaust pipe group 7, then flows in the first spiral pipe section 30 and the second spiral pipe section 31 in sequence to release heat, in the process, the water in the inner cylinder 27 and the outer cylinder 26 absorbs heat to be heated and finally flows into the hot water tank 13 on the scrap steel cleaning machine 12 to be matched with the chemical agent or the surfactant in the agent tank 15 to form the spray liquid in the spray liquid tank 14, and the hot water in the hot water tank 13 increases the temperature of the spray liquid, so that the removal effect of the spray liquid on the dirt on the surface of the scrap steel is better, the cleaned waste steel enters the waste steel preheating bed 2 again, the temperature of the flue gas is lower after the flue gas is subjected to secondary heat release through the gas-water heat exchange bag 3, the heat energy of the flue gas is utilized more effectively while the subsequent treatment is facilitated, the flue gas flowing out of the gas-water heat exchange bag 3 enters the flue gas purification equipment 4 through the flue gas outlet pipe 11, and the flue gas is discharged into the atmosphere after the treatment reaches the discharge standard.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (8)
1. The electric furnace steelmaking flue gas treatment system is characterized by comprising an electric furnace, a waste steel preheating bed, an air-water heat exchange bag and flue gas purification equipment which are sequentially arranged, wherein a discharge port of the waste steel preheating bed is connected with a feed port of the electric furnace, a flue gas pipe is arranged on the electric furnace, a flue gas inlet pipe group and a flue gas outlet pipe group are arranged on the waste steel preheating bed, a water inlet pipe, a water outlet pipe, a flue gas inlet pipe and a flue gas outlet pipe are arranged on the air-water heat exchange bag, the flue gas inlet pipe group is connected with the flue gas pipe, the flue gas outlet pipe group is connected with the flue gas inlet pipe, and the flue gas outlet pipe is connected with the flue gas purification equipment; the gas-water heat exchange bag is also connected with a waste steel cleaning machine, specifically, a hot water tank is arranged on the waste steel cleaning machine and is connected with the water outlet pipe, a spray liquid tank and a reagent tank are also arranged on the waste steel cleaning machine, the spray liquid tank is respectively communicated with the hot water tank and the reagent tank through a first inlet pipe and a second inlet pipe, and a discharge port of the waste steel cleaning machine is connected with a feed port of a waste steel preheating bed;
the scrap steel preheating bed further comprises a shell and a conveying belt arranged in the shell, the smoke inlet pipe group comprises at least one row of smoke direct exhaust pipes and at least one row of smoke deep exhaust pipes communicated with the smoke pipe, the outlet of each smoke direct exhaust pipe is located on the top wall of the inner side of the shell, the outlet side of each smoke deep exhaust pipe is connected with a smoke deep exhaust plate, the smoke deep exhaust plates are located above the conveying belt and arranged along the length direction of the conveying belt, and the smoke deep exhaust plates are provided with smoke overflowing grooves in one-to-one correspondence with the smoke deep exhaust pipes and smoke exhaust holes communicated with the smoke overflowing grooves; the smoke exhaust pipe group comprises a plurality of smoke exhaust pipes arranged at the lower part of the shell.
2. The flue gas treatment system for electric furnace steelmaking as claimed in claim 1, wherein the gas-water heat exchange pack includes an outer cylinder and an inner cylinder which are coaxially disposed, the water inlet pipe and the water outlet pipe are respectively communicated with the inner cylinder and the outer cylinder, the left side of the inner cylinder is opened, the gas-water heat exchange pack further includes a flue gas heat exchange section, the inlet and the outlet of the flue gas heat exchange section are respectively connected with the smoke inlet pipe and the smoke outlet pipe, and the flue gas heat exchange section includes a first spiral pipe section and a second spiral pipe section which are respectively disposed in the inner cylinder and the outer cylinder.
3. The flue gas treatment system for electric steelmaking of claim 1, wherein the flue gas purification equipment includes a cyclone dust collector and an absorption tower.
4. The flue gas treatment system for electric furnace steelmaking according to claim 1, wherein the scrap steel cleaning machine comprises a machine body and a spraying cover, the machine body is provided with a spraying conveyer belt, the hot water tank, the spraying liquid tank and the chemical agent tank are all arranged on the spraying cover, the spraying cover is further provided with a plurality of nozzles facing the spraying conveyer belt, and the nozzles are connected with the spraying liquid tank through a liquid conveying pipeline.
5. The flue gas treatment system for electric furnace steelmaking according to claim 1, wherein the length direction of the flue gas deep discharge plate is parallel to the length direction of the conveying belt and the height direction of the flue gas deep discharge plate is perpendicular to the belt surface of the conveying belt, and a gap of 1-2mm is further formed between the lower edge of the flue gas deep discharge plate and the belt surface of the conveying belt.
6. The flue gas treatment system for electric furnace steelmaking according to claim 1, wherein a triangular prism-shaped flow guide block is further fixedly arranged on one side of the flue gas deep discharge plate, which is close to the feed inlet of the scrap preheating bed.
7. The flue gas treatment system for electric furnace steelmaking of claim 6, wherein the deflector block is made of tungsten steel.
8. The system of claim 1, wherein the flue gas flow-through slots each correspond to two sets of smoke holes, and the two sets of smoke holes are respectively located on the front and rear sides of the deep smoke discharge plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922345685.4U CN211311510U (en) | 2019-12-24 | 2019-12-24 | Electric furnace steelmaking flue gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922345685.4U CN211311510U (en) | 2019-12-24 | 2019-12-24 | Electric furnace steelmaking flue gas treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211311510U true CN211311510U (en) | 2020-08-21 |
Family
ID=72080956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922345685.4U Active CN211311510U (en) | 2019-12-24 | 2019-12-24 | Electric furnace steelmaking flue gas treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211311510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909257A (en) * | 2021-10-08 | 2022-01-11 | 合肥赛欧机械制造有限公司 | Steel waste recovery process |
-
2019
- 2019-12-24 CN CN201922345685.4U patent/CN211311510U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113909257A (en) * | 2021-10-08 | 2022-01-11 | 合肥赛欧机械制造有限公司 | Steel waste recovery process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108384908B (en) | Water slag pool steam condensing device, gas collecting hood thereof and use method thereof | |
| CN209896033U (en) | Buffer chamber | |
| CN211311510U (en) | Electric furnace steelmaking flue gas treatment system | |
| CN110207510A (en) | A kind of recoverable exhaust gas environment-friendly processing unit of heat | |
| CN206944212U (en) | A kind of flue gas waste heat recovery apparatus | |
| CN107335415A (en) | A kind of activated coke regenerator | |
| CN210089416U (en) | Electric arc furnace flue arrangement and control structure | |
| CN218380391U (en) | Heat recovery device for drying equipment | |
| CN106091681A (en) | Body of heater with heat reclaim unit | |
| CN109000476B (en) | High-efficiency energy-saving submerged arc furnace | |
| CN211072323U (en) | Battery welding device | |
| CN211120636U (en) | Heat accumulating type forging heating furnace based on smoke-gas-removing heat accumulator | |
| CN215404336U (en) | Energy-saving steel ladle refining furnace | |
| CN208382921U (en) | A kind of novel porcelain furnace afterheat utilizing system | |
| CN219639136U (en) | High-temperature tail gas heat energy recycling device of turbine fan | |
| CN210832530U (en) | Dual-heating boiler | |
| CN218821772U (en) | Steam heat exchanger unit and kitchen waste treatment equipment | |
| CN220624988U (en) | Hot flue gas circulation structure of sintering machine | |
| CN217297917U (en) | Energy-saving refining furnace | |
| CN103033064A (en) | Device for recovering waste heat of sintering flue gas | |
| CN211464256U (en) | Waste treatment plasma reaction furnace equipment | |
| CN111549189B (en) | High-efficiency recycling device for waste heat of high-temperature molten slag | |
| CN214119322U (en) | High-temperature-resistant smoke expansion joint | |
| CN217764176U (en) | Sludge drying machine backheating system | |
| CN213656700U (en) | Boiler with waste heat recovery function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |