CN218443375U

CN218443375U - Heat recovery device for steel smelting

Info

Publication number: CN218443375U
Application number: CN202221793406.6U
Authority: CN
Inventors: 王世勇; 刘霞
Original assignee: Shaanxi Yuneng Kerui Electric Power Engineering Co ltd
Current assignee: Shaanxi Yuneng Kerui Electric Power Engineering Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2023-02-03
Anticipated expiration: 2032-07-12

Abstract

The utility model discloses a heat reclamation device for iron and steel is smelted, including the heat recovery case, the bottom of heat recovery case is equipped with the base, the skin weld of heat recovery case has the rose box, the surface of rose box and heat recovery case is seted up flutedly, the rose box communicates in the inside of heat recovery case through two sets of recesses. Through the heat recovery case, heat exchange assembly, the setting of rose box and filtering component, waste gas that can make when steel smelting production directly lets in the heat recovery incasement, the inlet tube, drain pipe and copper pipe can carry out recycle with the lower cold water of temperature in the heat recovery incasement portion heat to in the waste gas, the exhaust-gas treatment layer can filter the solid impurity in the waste gas before exhaust-gas discharge, can prevent that direct discharge from causing the pollution to the environment, and the exhaust-gas treatment case sets up to detachable structure, can be convenient for clear up the filter screen after exhaust-gas treatment, so that the subsequent use of filter screen.

Description

Heat recovery device for steel smelting

Technical Field

The utility model relates to the technical field of steel smelting, in particular to a heat recovery device for steel smelting.

Background

Iron and steel smelting is a general term of steel and iron metallurgical process, iron produced in industry is divided into pig iron (the carbon content is more than 2%) and steel (the carbon content is less than 2%) according to the carbon content, and steel making mainly takes the pig iron smelted by a blast furnace, sponge iron smelted by a direct reduction iron-making method and waste steel as raw materials and is smelted into steel by different methods;

the steel can produce waste gas when smelting, has higher heat in these waste gases, if directly handle the emission and can cause the loss of energy, mix solid impurity in the waste gas moreover, directly discharge also can cause the pollution to the environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heat reclamation device for iron and steel is smelted retrieves the heat through heat exchange assembly, filters waste gas through filtering component to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a heat reclamation device for iron and steel smelting, includes the heat recovery case, the bottom of heat recovery case is equipped with the base, the skin weld of heat recovery case has the rose box, the surface of rose box and heat recovery case is seted up flutedly, the rose box communicates in the inside of heat recovery case through two sets of recesses, the inside of heat recovery case is provided with heat exchange assemblies, the intake pipe has been seted up at the top of heat recovery case, the blast pipe has been seted up on the surface of rose box, the inside of rose box is provided with filtering component, filtering component includes exhaust-gas treatment case, filter screen and holds the chamber, the surface of exhaust-gas treatment case inlays and is equipped with the filter screen, the inside of rose box has been seted up and has been held the chamber, exhaust-gas treatment case block is in the inside that holds the chamber.

Preferably, heat exchange assemblies includes inlet tube, copper pipe and drain pipe, the copper pipe sets up in the inside of heat recovery case, just the both ends of copper pipe communicate respectively has inlet tube and drain pipe, just inlet tube and drain pipe run through respectively in the surface of heat recovery case and extend to the external world, just inlet tube and drain pipe all with the heat recovery case rigid coupling.

Preferably, the lateral wall of exhaust-gas treatment case has seted up the spacing groove, the inner wall integrated into one piece who holds the chamber have with spacing groove assorted spacing card limit, spacing card limit block is in the inside of spacing groove.

Preferably, the inner wall of the accommodating cavity is provided with a clamping groove, the side wall of the waste gas treatment box is integrally formed with a folded edge matched with the clamping groove, and the folded edge is clamped inside the clamping groove.

Preferably, the welding of the top of exhaust-gas treatment case has L shape folded plate, the surface rotation of rose box is connected with the jack catch, form the holding tank between L shape folded plate and the exhaust-gas treatment case, the jack catch block is in the inside of holding tank.

Preferably, the heat recovery box comprises a metal inner container and a metal outer shell, and a phenolic foam heat insulation layer and an asbestos heat insulation layer are filled between the metal inner container and the metal outer shell.

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

through the heat recovery case, heat exchange assemblies, the setting of rose box and filtering components, waste gas that produces when can making steel smelting directly lets in the heat recovery incasement, the inlet tube, drain pipe and copper pipe can carry out recycle with the lower cold water of temperature in the heat recovery incasement portion to the heat in the waste gas, the exhaust-gas treatment layer can filter the solid impurity in the waste gas before exhaust-gas discharge, can prevent that direct discharge from causing the pollution to the environment, and the exhaust-gas treatment case sets up to detachable structure, can be convenient for clear up the filter screen after exhaust-gas treatment ends, so that the follow-up use of filter screen.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is an enlarged schematic view of region A of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the internal structure of the heat recovery tank of the present invention;

FIG. 4 is a schematic view of the connection structure of the waste gas treatment tank and the filter tank of the present invention;

fig. 5 is a schematic sectional view of the heat recovery tank of the present invention.

In the figure: 1. a base; 2. a filter box; 3. a heat recovery tank; 4. a water inlet pipe; 5. an air inlet pipe; 6. a drain pipe; 7. an exhaust pipe; 8. a waste gas treatment tank; 9. a jaw; 10. l-shaped folded plates; 11. a copper tube; 12. an accommodating chamber; 13. a filter screen; 14. a limiting groove; 15. folding edges; 16. a card slot; 17. a groove; 18. limiting and clamping edges; 19. a metal liner; 20. a phenolic foam insulation layer; 21. an asbestos insulation layer; 22. a metal housing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1 to 5, the present invention provides a technical solution: a heat recovery device for steel smelting comprises a heat recovery tank 3;

the bottom of the heat recovery box 3 is provided with a base 1, the surface of the heat recovery box 3 is welded with a filter box 2, the surfaces of the filter box 2 and the heat recovery box 3 are provided with grooves 17, the filter box 2 is communicated with the interior of the heat recovery box 3 through two groups of grooves 17, the interior of the heat recovery box 3 is provided with a heat exchange assembly, the top of the heat recovery box 3 is provided with an air inlet pipe 5, the surface of the filter box 2 is provided with an exhaust pipe 7, the interior of the filter box 2 is provided with a filter assembly, the filter assembly comprises an exhaust gas treatment box 8, a filter screen 13 and a containing cavity 12, the surface of the exhaust gas treatment box 8 is embedded with the filter screen 13, the interior of the filter box 2 is provided with a containing cavity 12, and the exhaust gas treatment box 8 is clamped in the containing cavity 12;

the heat exchange assembly comprises a water inlet pipe 4, a copper pipe 11 and a water drain pipe 6, the copper pipe 11 is arranged inside the heat recovery tank 3, two ends of the copper pipe 11 are respectively communicated with the water inlet pipe 4 and the water drain pipe 6, the water inlet pipe 4 and the water drain pipe 6 respectively penetrate through the surface of the heat recovery tank 3 and extend to the outside, the water inlet pipe 4 and the water drain pipe 6 are fixedly connected with the heat recovery tank 3, the copper pipe 11 is of a snake-shaped structure, and the copper pipe 11 has good heat conductivity and can facilitate heat exchange between cold water and waste gas with low temperature;

the side wall of the waste gas treatment box 8 is provided with a limiting groove 14, the inner wall of the accommodating cavity 12 is integrally formed with a limiting clamping edge 18 matched with the limiting groove 14, the limiting clamping edge 18 is clamped inside the limiting groove 14, and the limiting clamping edge 18 and the limiting groove 14 can play a role in guiding when the waste gas treatment box 8 is installed so as to facilitate the replacement of the waste gas treatment box 8;

the inner wall of the accommodating cavity 12 is provided with a clamping groove 16, the side wall of the waste gas treatment box 8 is integrally formed with a folded edge 15 matched with the clamping groove 16, the folded edge 15 is clamped inside the clamping groove 16, and the arrangement of the clamping groove 16 and the folded edge 15 can increase the sealing property between the waste gas treatment box 8 and the filter box 2, so that waste gas is prevented from being dissipated to the outside;

the top of the waste gas treatment box 8 is welded with an L-shaped folded plate 10, the surface of the filter box 2 is rotatably connected with a jaw 9, an accommodating groove is formed between the L-shaped folded plate 10 and the waste gas treatment box 8, the jaw 9 is clamped inside the accommodating groove, the connection between the waste gas treatment box 8 and the filter box 2 is realized through the arrangement of the jaw 9 and the L-shaped folded plate 10, the integral structure is simple, and the waste gas treatment box 8 is convenient to mount and dismount;

the heat recovery box 3 comprises a metal inner container 19 and a metal shell 22, a phenolic foam heat-insulating layer 20 and an asbestos heat-insulating layer 21 are filled between the metal inner container 19 and the metal shell 22, and the phenolic foam heat-insulating layer 20 and the asbestos heat-insulating layer 21 can play a role in heat preservation and heat insulation, so that heat loss in waste gas is prevented, and the heat exchange efficiency is improved.

Let in heat recovery case 3 with waste gas from intake pipe 5 inside, then let in copper pipe 11 through inlet tube 4 with the lower cold water of temperature, the lower cold water of temperature can be followed drain pipe 6 and discharged after copper pipe 11, in this process, waste gas can carry out the heat exchange with the lower cold water of temperature, thereby make the temperature of cold water rise, and then prevent that the heat in the waste gas from appearing extravagantly, waste gas can remove to rose box 2 in heat recovery case 3 is inside, and finally discharge through blast pipe 7, in this process, waste gas can pass through exhaust-gas treatment case 8, filter screen 13 can filter the solid impurity in the waste gas, and then prevent the direct discharge polluted environment of waste gas.

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

Claims

1. A heat recovery device for iron and steel smelting, includes heat recovery case (3), its characterized in that: the bottom of heat recovery case (3) is equipped with base (1), the skin weld of heat recovery case (3) has rose box (2), the surface of rose box (2) and heat recovery case (3) is seted up fluted (17), rose box (2) communicate in the inside of heat recovery case (3) through two sets of recess (17), the inside of heat recovery case (3) is provided with heat exchange assemblies, intake pipe (5) have been seted up at the top of heat recovery case (3), blast pipe (7) have been seted up on the surface of rose box (2), the inside of rose box (2) is provided with filter assembly, filter assembly includes exhaust-gas treatment case (8), filter screen (13) and holds chamber (12), the surface of exhaust-gas treatment case (8) inlays and is equipped with filter screen (13), the inside of rose box (2) has been seted up and has been held chamber (12), exhaust-gas treatment case (8) block is in the inside that holds chamber (12).

2. The heat recovery device for iron and steel smelting according to claim 1, characterized in that: the heat exchange assembly comprises a water inlet pipe (4), a copper pipe (11) and a drain pipe (6), the copper pipe (11) is arranged inside the heat recovery box (3), the two ends of the copper pipe (11) are respectively communicated with the water inlet pipe (4) and the drain pipe (6), the water inlet pipe (4) and the drain pipe (6) respectively penetrate through the surface of the heat recovery box (3) and extend to the outside, and the water inlet pipe (4) and the drain pipe (6) are fixedly connected with the heat recovery box (3).

3. The heat recovery device for iron and steel smelting according to claim 1, characterized in that: spacing groove (14) have been seted up to the lateral wall of exhaust-gas treatment case (8), the inner wall integrated into one piece that holds chamber (12) has with spacing groove (14) assorted spacing card limit (18), spacing card limit (18) block in the inside of spacing groove (14).

4. A heat recovery device for steel smelting according to claim 3, characterized in that: the inner wall of the accommodating cavity (12) is provided with a clamping groove (16), the side wall of the waste gas treatment box (8) is integrally formed with a folding edge (15) matched with the clamping groove (16), and the folding edge (15) is clamped in the clamping groove (16).

5. The heat recovery device for iron and steel smelting according to claim 4, characterized in that: the top welding of exhaust-gas treatment case (8) has L shape folded plate (10), the surface rotation of rose box (2) is connected with jack catch (9), form the holding tank between L shape folded plate (10) and exhaust-gas treatment case (8), jack catch (9) block is in the inside of holding tank.

6. The heat recovery device for iron and steel smelting according to claim 1, characterized in that: the heat recovery box (3) comprises a metal inner container (19) and a metal outer shell (22), wherein a phenolic foam heat-insulating layer (20) and an asbestos heat-insulating layer (21) are filled between the metal inner container (19) and the metal outer shell (22).