CN216245475U

CN216245475U - Electric arc furnace capable of recycling heat energy

Info

Publication number: CN216245475U
Application number: CN202122899464.9U
Authority: CN
Inventors: 杨松; 崔保龙; 李广跃; 许益华
Original assignee: Shanxi Baolong Technology Co ltd
Current assignee: Shanxi Baolong Technology Co ltd
Priority date: 2021-11-24
Filing date: 2021-11-24
Publication date: 2022-04-08
Anticipated expiration: 2031-11-24

Abstract

The utility model discloses an electric arc furnace capable of recycling heat energy, which comprises a furnace body, wherein a high-temperature bearing is fixedly arranged on the peripheral surface of the furnace body, a wall-mounted water tank is fixedly arranged on the outer surface of the high-temperature bearing, a smoke exhaust pipe is fixedly arranged inside a shell of the furnace body, a smoke concentration box is fixedly arranged at the top of the smoke exhaust pipe, and a heat conduction pipe is fixedly arranged inside the shell of the smoke concentration box. According to the utility model, the high-temperature bearing is arranged on the surface of the furnace body, the wall-mounted water tank is arranged on the surface of the high-temperature bearing, tap water in the wall-mounted water tank is heated by the wall-mounted water tank through the surface temperature of the furnace body, and then enters the interior of the scrap steel preheating tank through the water outlet pipe, so that waste heat treatment can be carried out on the scrap steel in the scrap steel preheating tank, the scrap steel can better enter the furnace body for smelting, energy is saved, emission is reduced, meanwhile, sundries such as soil on the surface of the scrap steel can be washed away, and the surface of the scrap steel is prevented from being adsorbed with the sundries, thereby influencing the quality of the smelted steel.

Description

Electric arc furnace capable of recycling heat energy

Technical Field

The utility model relates to the technical field of heat energy recycling of electric arc furnaces, in particular to an electric arc furnace capable of recycling heat energy.

Background

An electric arc furnace is an electric furnace that utilizes the high temperature produced by an electrode arc to melt ores and metals. When the gas discharge forms electric arcs, the energy is concentrated, the temperature of an arc zone is more than 3000 ℃, for metal smelting, the process flexibility of the electric arc furnace is higher than that of other steel-making furnaces, impurities such as sulfur, phosphorus and the like can be effectively removed, the furnace temperature is easy to control, the occupied area of equipment is small, the electric arc furnace is suitable for smelting high-quality alloy steel, and the heat energy recycling of the electric arc furnace is generally high-temperature recycling and the recycling of the heat energy converted into kinetic energy.

However, in the prior art, when the smelting furnace is actually used, the existing smelting furnace generally does not well utilize the waste heat, and meanwhile, other heat resources are generally used for heating the existing steel scraps in the pretreatment process, so that the heat energy resources of the furnace body are not well utilized, and the energy conservation and emission reduction are not enough.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an electric arc furnace for recycling heat energy to solve the above-mentioned problems of the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an electric arc furnace that heat energy was recycled, includes the furnace body, the fixed high temperature bearing that is provided with of periphery surface of furnace body, the fixed surface of high temperature bearing is provided with the wall built-up water tank, the inside fixed pipe of discharging fume that is provided with of casing of furnace body, the fixed concentrated case of flue gas that is provided with in top of the pipe of discharging fume, the inside fixed heat pipe that is provided with of casing of the concentrated case of flue gas, the fixed water storage box that is provided with of one end of heat pipe, the inside fixed outlet pipe that is provided with of casing of water storage box.

Preferably, the surface of the wall-mounted water tank is fixedly provided with a protective annular cylinder through a connecting rod.

Preferably, a first water inlet valve is arranged on a top shell of the wall-hanging water tank, and a first water outlet valve is arranged on a bottom shell of the wall-hanging water tank.

Preferably, a secondary smoke exhaust pipe is fixedly arranged inside the top shell of the smoke concentration box, and the secondary smoke exhaust pipe fixedly penetrates through and extends into the smoke concentration box.

Preferably, a second water outlet valve is arranged inside the water outlet pipe, and a second water inlet valve is arranged on the top shell of the water storage tank.

Preferably, the surface of the protective annular cylinder is fixedly provided with a scrap steel preheating tank through a connecting rod, the scrap steel preheating tank is arranged at the bottom of the water outlet pipe, and the water outlet pipe extends into the scrap steel preheating tank.

Preferably, the surface of the furnace body is fixedly provided with a support frame, and the top of the support frame is fixedly connected with the bottom of the water storage tank.

Preferably, the heat-resistant temperature of the high-temperature bearing is matched with the temperature of the surface of the shell of the furnace body.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model has the advantages that the high-temperature bearing is arranged on the surface of the furnace body, the wall-hung water tank is arranged on the surface of the high-temperature bearing, tap water in the wall-hung water tank is heated by the surface temperature of the furnace body through the wall-hung water tank, the waste heat on the surface of the furnace body is just matched with the tap water in the wall-hung water tank through the high-temperature bearing, the surface waste heat of the furnace body is better utilized, simultaneously, when smoke in the furnace body is discharged through the smoke discharge pipe, a large amount of waste heat is generated on the surface of the smoke discharge pipe, the smoke concentration tank is arranged on the top of the smoke discharge pipe, the waste heat of the smoke discharge pipe is weighted by the smoke concentration tank, then the heat is conducted to the interior of the water storage tank through the heat conduction of the heat conduction pipe, the tap water is filled into the water storage tank through the second water inlet valve, the water in the water storage tank is heated through the heat collected by the water storage tank, and then enters the interior of the waste steel preheating tank through the water outlet pipe, the waste heat treatment can be carried out on the waste steel in the waste steel preheating tank, the waste steel can be heated, so that the waste steel can better enter the furnace body for smelting, the energy is saved, the emission is reduced, meanwhile, sundries such as soil on the surface of the waste steel can be washed away, the surface of the waste steel is prevented from being adsorbed with the sundries, and the quality of steel making is further influenced;

2. the high-temperature bearing is arranged between the furnace body and the wall-mounted water tank, so that the wall-mounted water tank can move conveniently, workers in a steel plant can take water conveniently through the first water outlet valve, the protective annular cylinder is arranged on the periphery of the wall-mounted water tank, the wall-mounted water tank is protected through the protective annular cylinder, nearby machines are prevented from colliding with the surface of the wall-mounted water tank to damage the wall-mounted water tank, the secondary smoke exhaust pipe is arranged to perform secondary emission on smoke collected in the smoke concentration tank, hot water in the water storage tank is controlled to be discharged through the second water outlet valve, and the like.

Drawings

FIG. 1 is a front sectional view of an electric arc furnace for recycling heat energy according to the present invention;

FIG. 2 is a sectional top view of a wall-mounted water tank structure of an electric arc furnace for recycling heat energy according to the present invention;

FIG. 3 is an enlarged front view of the structure of the vicinity of the heat pipe of the electric arc furnace for recycling heat energy according to the present invention.

In the figure: 1. a furnace body; 2. a high temperature bearing; 3. a wall-mounted water tank; 4. a protective annular cylinder; 5. a first water inlet valve; 6. a first water outlet valve; 7. a smoke exhaust pipe; 8. a flue gas concentration box; 9. a secondary smoke exhaust pipe; 10. a heat conducting pipe; 11. a water storage tank; 12. a water outlet pipe; 13. a second water outlet valve; 14. a second water inlet valve; 15. a scrap steel preheating tank; 16. a support frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an electric arc furnace that heat energy was recycled, includes furnace body 1, the periphery fixed surface of furnace body 1 installs high temperature bearing 2, high temperature bearing 2's surface fixed mounting has wall built-up water tank 3, the inside fixed mounting of casing of furnace body 1 has the pipe 7 of discharging fume, the top fixed mounting of the pipe 7 of discharging fume has the concentrated case 8 of flue gas, the inside fixed mounting of casing of the concentrated case 8 of flue gas has heat pipe 10, the one end fixed mounting of heat pipe 10 has water storage box 11, the inside fixed mounting of casing of water storage box 11 has outlet pipe 12.

The surface of wall built-up water tank 3 has a protection annular cylinder 4 through connecting rod fixed mounting, and protection annular cylinder 4 is used for protecting wall built-up water tank 3.

A first water inlet valve 5 is arranged on a top shell of the wall-mounted water tank 3, a first water outlet valve 6 is arranged on a bottom shell of the wall-mounted water tank 3, the first water inlet valve 5 is used for water inlet, and the first water outlet valve 6 is used for water outlet.

The inside fixed mounting of top casing of flue gas centralized box 8 has the secondary to discharge fume tub 9, and the secondary is discharged fume tub 9 and is fixed to run through and extend to the inside of flue gas centralized box 8, and the secondary is discharged fume tub 9 and is used for the secondary to discharge fume.

A second water outlet valve 13 is arranged in the water outlet pipe 12, a second water inlet valve 14 is arranged on the top shell of the water storage tank 11, the second water outlet valve 13 is used for controlling the discharge of hot water in the water storage tank 11, and the second water inlet valve 14 is used for controlling the water inlet of the water storage tank 11.

The surface of the protective annular cylinder 4 is fixedly provided with a scrap steel preheating tank 15 through a connecting rod, the scrap steel preheating tank 15 is arranged at the bottom of the water outlet pipe 12, the water outlet pipe 12 extends to the inside of the scrap steel preheating tank 15, and the scrap steel preheating tank 15 is used for preheating the scrap steel.

The surface of the furnace body 1 is fixedly provided with a support frame 16, the top of the support frame 16 is fixedly arranged with the bottom of the water storage tank 11, and the support frame 16 is used for supporting the water storage tank 11.

The heat-resistant temperature of the high-temperature bearing 2 is matched with the temperature of the surface of the shell of the furnace body 1.

The working principle is as follows: when in use, the utility model is provided with the high temperature bearing 2 on the surface of the furnace body 1, the wall hanging water tank 3 on the surface of the high temperature bearing 2, the wall hanging water tank 3 is arranged on the surface of the high temperature bearing 3, the tap water in the wall hanging water tank 3 is heated by the surface temperature of the furnace body 1 through the wall hanging water tank 3, the waste heat on the surface of the furnace body 1 is just matched with the tap water in the wall hanging water tank 3 through the high temperature bearing 2, the surface waste heat of the furnace body 1 is better utilized, simultaneously, when the smoke exhaust pipe 7 discharges the smoke in the furnace body 1, a large amount of waste heat is generated on the surface of the smoke exhaust pipe 7, the smoke concentration tank 8 is arranged on the top of the smoke exhaust pipe 7, the waste heat of the smoke exhaust pipe 7 is weighted by the smoke concentration tank 8, then the heat is conducted to the inside of the water storage tank 11 through the heat conduction of the heat conduction pipe 10, the tap water is filled into the inside the water storage tank 11 through the second water inlet valve 14, the heat collected by the water storage tank 11 is used for heating the water in the water storage tank 11, then enters the inside of the scrap steel preheating tank 15 through the water outlet pipe 12, so that waste heat treatment can be carried out on the scrap steel in the scrap steel preheating tank 15, the scrap steel can be heated, the scrap steel can better enter the furnace body 1 for smelting, energy is saved, emission is reduced, meanwhile, the washing of sundries such as soil on the surface of the scrap steel can be carried out, the sundries are prevented from being adsorbed on the surface of the scrap steel, so that the quality of steel smelting is influenced, meanwhile, the high-temperature bearing 2 is arranged between the furnace body 1 and the wall built-up water tank 3, the wall built-up water tank 3 is convenient to move, workers in a steel mill can conveniently take water through the first water outlet valve 6, meanwhile, the protective annular cylinder 4 is arranged on the periphery of the wall built-up water tank 3, the wall built-up water tank 3 is protected through the protective annular cylinder 4, the wall built-up water tank 3 is prevented from being collided with the surface of the wall built-up water tank 3 by nearby machinery, and the secondary exhaust pipe 9 is arranged for carrying out secondary emission on the flue gas collected in the flue gas collecting tank 8, the discharge of the hot water inside the reservoir 11 is controlled by the second outlet valve 13, etc.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An electric arc furnace that heat energy was recycled, includes furnace body (1), its characterized in that: the fixed high temperature bearing (2) that is provided with of periphery surface of furnace body (1), the fixed surface of high temperature bearing (2) is provided with wall built-up water tank (3), the inside fixed pipe (7) of discharging fume that is provided with of casing of furnace body (1), the fixed concentrated case of flue gas (8) that is provided with in top of the pipe (7) of discharging fume, the inside fixed heat pipe (10) that is provided with of casing of the concentrated case of flue gas (8), the fixed water storage box (11) that is provided with of one end of heat pipe (10), the inside fixed outlet pipe (12) that is provided with of casing of water storage box (11).

2. A thermal energy recovery electric arc furnace as claimed in claim 1, wherein: the surface of the wall-mounted water tank (3) is fixedly provided with a protective annular cylinder (4) through a connecting rod.

3. A thermal energy recovery electric arc furnace as claimed in claim 1, wherein: a first water inlet valve (5) is arranged on a top shell of the wall-hanging water tank (3), and a first water outlet valve (6) is arranged on a bottom shell of the wall-hanging water tank (3).

4. A thermal energy recovery electric arc furnace as claimed in claim 1, wherein: the inside fixed secondary pipe (9) of discharging fume that is provided with of top casing of flue gas centralized box (8), the secondary pipe (9) of discharging fume is fixed to be run through and is extended to the inside of flue gas centralized box (8).

5. A thermal energy recovery electric arc furnace as claimed in claim 1, wherein: a second water outlet valve (13) is arranged inside the water outlet pipe (12), and a second water inlet valve (14) is arranged on the top shell of the water storage tank (11).

6. A thermal energy recovery electric arc furnace as claimed in claim 2, wherein: the surface of the protective annular cylinder (4) is fixedly provided with a scrap steel preheating pool (15) through a connecting rod, the scrap steel preheating pool (15) is arranged at the bottom of the water outlet pipe (12), and the water outlet pipe (12) extends to the inside of the scrap steel preheating pool (15).

7. A thermal energy recovery electric arc furnace as claimed in claim 1, wherein: the surface of the furnace body (1) is fixedly provided with a support frame (16), and the top of the support frame (16) is fixedly connected with the bottom of the water storage tank (11).

8. A thermal energy recovery electric arc furnace as claimed in claim 1, wherein: the heat-resisting temperature of the high-temperature bearing (2) is matched with the temperature of the surface of the shell of the furnace body (1).