CN214502105U

CN214502105U - Tail gas heat utilization device of gas type crucible furnace

Info

Publication number: CN214502105U
Application number: CN202022883958.3U
Authority: CN
Inventors: 韦亮成; 郑磊
Original assignee: Dongguan Jinhuang Industrial Furnace Equipment Manufacturing Co ltd
Current assignee: Dongguan Jinhuang Industrial Furnace Equipment Manufacturing Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2021-10-26
Anticipated expiration: 2030-12-03

Abstract

The utility model discloses a tail gas heat utilization device of a gas type crucible furnace, which comprises a box body, wherein a circuitous heat radiation part is arranged in the box body, one end of the heat radiation part is communicated with an exhaust pipe of the crucible furnace through a first connector, and the other end is communicated with an outlet pipe through the first connector; the box body is provided with an air inlet and an air outlet, the air inlet is communicated with the fan through an air pipe, and the air outlet is communicated with another air pipe. The utility model integrates the tail gas discharge pipe and the air inlet path of the combustion-supporting air into a box body, thereby realizing the heat conduction of high-temperature tail gas and normal-temperature combustion-supporting air, naturally reducing the temperature of the tail gas and simultaneously heating the combustion-supporting air, effectively utilizing the energy of waste gas and reducing the load of a crucible furnace waste gas treatment system and a crucible furnace combustion system; the heat conducting area of the high-temperature tail gas can be enlarged and the heat conducting efficiency is improved by arranging a plurality of U-shaped heat radiating groups and applying the heat radiating fins; through set up thermal-insulated bubble cotton on the box inner wall, the security that can promote the device and use.

Description

Tail gas heat utilization device of gas type crucible furnace

Technical Field

The utility model relates to a gas formula crucible furnace technical field, in particular to tail gas heat utilization equipment of gas formula crucible furnace.

Background

The crucible furnace is the simplest smelting equipment and is mainly used for melting nonferrous metals with low melting points, such as copper, aluminum and alloys thereof. In the furnace, the alloy is melted in the crucible, heat is transferred to the furnace charge through the crucible, and the combustion products of the furnace charge are not in direct contact, so that the chemical components of the alloy are hardly influenced by furnace gas, the temperature of the alloy liquid is more uniform, but the thermal efficiency is lower, and the fuel consumption is high. In order to save energy, protect the environment and improve efficiency, part of the heat source has been changed to gas, i.e., gas fired crucible furnaces.

During production, the combustion process of the gas-fired crucible furnace generally needs the assistance of combustion-supporting air, the higher the temperature of the combustion-supporting air is, the more the control of the melting atmosphere of the crucible furnace is facilitated, and the more the melting efficiency of the crucible furnace can be improved. On the other hand, a large amount of high-temperature tail gas can be released in the combustion process of the gas-fired crucible furnace, and the tail gas generally needs to enter a spray tower to be cooled and then enters a series of purification structures or devices to be purified.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the above-mentioned prior art, the utility model provides a tail gas heat utilization equipment of gas formula crucible furnace enables combustion-supporting wind and absorbs the heat in the tail gas, both can reduce the temperature of tail gas, alleviates tail gas clean system's load, can absorb the heat in the tail gas and use combustion-supporting system simultaneously again, promotes the smelting efficiency of crucible furnace, reduces combustion-supporting system's load.

In order to solve the technical problem, the utility model discloses a technical scheme as follows:

the tail gas heat utilization device of the gas-fired crucible furnace comprises a box body, wherein a plurality of U-shaped heat dissipation groups which are arranged in parallel are arranged in the box body, and the plurality of heat dissipation groups are communicated with each other pairwise through connecting pipes to form a circuitous heat dissipation part; one end of the heat dissipation part is communicated with an exhaust pipe of the crucible furnace through a first connector, the other end of the heat dissipation part is communicated with an air outlet pipe through the first connector, and the two first connectors are detachably and fixedly arranged on the box body; the box body is provided with an air inlet and an air outlet, the air inlet is communicated with the fan through an air pipe, and the air outlet is communicated with another air pipe; high-temperature tail gas can enter the heat dissipation members through the exhaust pipes, and low-temperature tail gas is discharged from the exhaust pipe after heat exchange is carried out on the high-temperature tail gas through the plurality of heat dissipation groups one by one; and normal-temperature wind energy enters the box body from the air inlet, and hot air is discharged from the air outlet after heat exchange is carried out on the wind energy through the plurality of heat dissipation groups.

As a further elaboration of the above technical solution:

in the above technical scheme, each heat dissipation group comprises a plurality of heat dissipation pipes arranged in parallel, and the periphery of each heat dissipation pipe is fixedly provided with a heat dissipation fin in a detachable manner, wherein the heat dissipation fins are spirally wound on the outer walls of the heat dissipation pipes.

In the technical scheme, the inner wall of the box body is provided with a baffle above and below the plurality of radiating groups, and the end parts of the plurality of radiating fins are detachably fixed on the baffle; and the connecting pipes are detachably and fixedly arranged on the baffle.

In the above technical solution, two end portions of each first connection head are respectively provided with a first hole and a second hole, the first hole is matched with the exhaust pipe/the exhaust pipe, and the second hole is matched with all the heat dissipation pipes on one heat dissipation group.

In the above technical scheme, the two ends of the connecting pipe are respectively provided with a second connector, and each second connector is detachably and fixedly arranged on the baffle; every the both ends of second connector are equipped with respectively second hole and third hole, the third hole can with the connecting pipe matches.

In the above technical solution, the two end portions of the connecting pipe and the first connecting joint are both provided with a high temperature resistant sealing member in a matching manner.

In the technical scheme, the inner wall of the box body is also provided with heat insulation foam.

Compared with the prior art, the beneficial effects of the utility model reside in that: the tail gas discharge pipe and the combustion-supporting air inlet path are integrated in one box body, so that the heat conduction of high-temperature tail gas and normal-temperature combustion-supporting air is realized, the temperature of the tail gas is naturally reduced, the temperature of the combustion-supporting air is increased, the energy of waste gas is effectively utilized, and the loads of a crucible furnace waste gas treatment system and a crucible furnace combustion system are reduced; the heat conducting area of the high-temperature tail gas can be enlarged and the heat conducting efficiency is improved by arranging a plurality of U-shaped heat radiating groups and applying the heat radiating fins; through set up thermal-insulated bubble cotton on the box inner wall, the security that can promote the device and use.

Drawings

FIG. 1 is a front view of the internal structure of the case in this embodiment;

FIG. 2 is a side view of the internal structure of the case in this embodiment;

FIG. 3 is a top sectional view of the internal structure of the case in the present embodiment;

fig. 4 is a schematic front view of each radiating pipe in the present embodiment.

In the figure: 1. a box body; 2. a heat dissipation group; 21. a radiating pipe; 22. a heat sink; 3. a connecting pipe; 4. a first connector; 5. an exhaust pipe; 6. an air outlet pipe; 7. an air inlet; 8. an air outlet; 9. an air duct; 10. a first hole; 11. a second hole; 12. a second connector; 13. a third aperture; 15. heat insulation foam; 16. and a baffle plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The embodiments described by referring to the drawings are exemplary and intended to be used for explaining the present application and are not to be construed as limiting the present application. In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise. In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate. In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

As shown in fig. 1-4, a tail gas heat utilization device of a gas-fired crucible furnace comprises a box body 1, wherein a plurality of U-shaped heat dissipation groups 2 which are arranged in parallel are arranged in the box body 1, and the plurality of heat dissipation groups 2 are communicated with each other pairwise through connecting pipes 3 to form a circuitous heat dissipation part; one end part of the heat dissipation part is communicated with an exhaust pipe 5 of the crucible furnace through a first connector 4, the other end part of the heat dissipation part is communicated with an exhaust pipe 6 through the first connector 4, and the two first connectors 4 are detachably and fixedly arranged on the box body 1; an air inlet 7 and an air outlet 8 are arranged on the box body 1, the air inlet 7 is communicated with a fan through an air pipe 9, and the air outlet 8 is communicated with another air pipe 9; high-temperature tail gas can enter the heat dissipation part through the exhaust pipe 5, and is subjected to heat exchange one by one through the plurality of heat dissipation groups 2, and then low-temperature tail gas is discharged from the exhaust pipe 6; normal-temperature wind energy enters the box body 1 from the air inlet 7 and is subjected to heat exchange by the plurality of heat dissipation groups, and then hot air is discharged from the air outlet 8.

As a further elaboration of the above technical solution:

in the above technical solution, each heat dissipation group 2 includes a plurality of heat dissipation pipes 21 arranged in parallel, a heat dissipation fin 22 is detachably and fixedly arranged on the periphery of each heat dissipation pipe 21, and the heat dissipation fin 22 is spirally wound on the outer wall of the heat dissipation pipe 21.

In the present embodiment, each heat dissipation group 2 comprises five metal heat dissipation tubes 21, and a metal heat dissipation plate 22 is spirally wound and fixed on the periphery of each heat dissipation tube. In order to facilitate assembly, when in use, each radiating pipe 21 on the U-shaped radiating group 2 can be split into two straight pipes and one bent pipe which are connected in a sealing manner.

In the above technical solution, the inner wall of the box body 1 is provided with a baffle 16 above and below the plurality of radiating groups 2, and the end parts of the plurality of radiating fins 22 are detachably fixed on the baffle 16; a plurality of connecting pipes 3 are all detachably fixed on the baffle 16.

In this embodiment, a reinforcing plate is further provided between the two baffle plates 16 to reinforce the strength of the box body.

In the above technical solution, the two end portions of each first connector 4 are respectively provided with a first hole 10 and a second hole 11, the first hole 10 is matched with the exhaust pipe 5/the exhaust pipe 6, and the second hole 11 is matched with all the radiating pipes 21 on one radiating group 2.

In the above technical solution, the two ends of the connecting pipe 3 are respectively provided with a second connector 12, and each second connector 12 is detachably fixed on the baffle 16; the two ends of each second connector 12 are respectively provided with a second hole 12 and a third hole 13, and the third holes 13 can be matched with the connecting pipes 3.

In the embodiment, the connecting pipe 3 connects a plurality of independent radiating groups 2, and a circuitous channel is formed in the box body 1; the first connector 4 connects the two ends of the channel with the air inlet pipe 5 and the air outlet pipe 6 respectively, so that the two ends of the channel are communicated with the outside and form a closed waste gas flow passage. In order to ensure efficient use of heat, in the present embodiment, the connection pipes 3 are all provided inside the case 1.

In the above technical solution, the two end portions of the connecting pipe 3 and the first connecting joint 4 are both provided with high temperature resistant sealing elements in a matching manner.

It can be understood that the arrangement of the high-temperature-resistant sealing element can avoid tail gas leakage and prevent environmental pollution.

In the above technical scheme, the inner wall of the box body 1 is also provided with heat insulation foam 15.

It can be understood that the arrangement of the heat insulation foam 15 can not only slow down the leakage of heat in the box and improve the heat exchange efficiency of high-temperature tail gas and combustion-supporting air, but also prevent the surface of the box body 1 from being overheated, so that the device is safer in the use process.

When the tail gas cooling device works, high-temperature tail gas enters a tail gas channel formed by the heat dissipation group 2 in the box body 1 from the exhaust pipe 5, is dissipated through the plurality of heat dissipation pipes 21 and the heat dissipation fins 22, and the temperature of the tail gas is gradually reduced and is exhausted from the exhaust pipe 6 at one end of the box body 1; meanwhile, the fan injects normal temperature air into the box body 1 from the air inlet 7 through the air pipe 9, and forms hot air after exchanging heat with the radiating pipe 21 and the radiating fins 22, and blows out the hot air from the air outlet 8 for subsequent operation. In fig. 1-4, the arrows indicate the direction of flow of the exhaust gases.

In this embodiment, two sets of heat dissipation sets 2 arranged in parallel and communicated with each other are installed in the box body 1. Through detection, the measured temperature of the tail gas before entering the box body 1 is between 400 and 700 ℃, and the measured temperature discharged from the box body 1 is between 150 and 350 ℃; the temperature measured at the air outlet is about 350 degrees. The tail gas cooling and combustion-supporting air heating effects are obvious, and the heat utilization effect of the device is good.

The above is not intended to limit the technical scope of the present invention, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. The tail gas heat utilization device of the gas-fired crucible furnace is characterized by comprising a box body, wherein a plurality of U-shaped heat dissipation groups which are arranged in parallel are arranged in the box body, and the plurality of heat dissipation groups are communicated with each other pairwise through connecting pipes to form a circuitous heat dissipation part; one end of the heat dissipation part is communicated with an exhaust pipe of the crucible furnace through a first connector, the other end of the heat dissipation part is communicated with an air outlet pipe through the first connector, and the two first connectors are detachably and fixedly arranged on the box body; the box body is provided with an air inlet and an air outlet, the air inlet is communicated with the fan through an air pipe, and the air outlet is communicated with another air pipe; high-temperature tail gas can enter the heat dissipation members through the exhaust pipes, and low-temperature tail gas is discharged from the exhaust pipe after heat exchange is carried out on the high-temperature tail gas through the plurality of heat dissipation groups one by one; and normal-temperature wind energy enters the box body from the air inlet, and hot air is discharged from the air outlet after heat exchange is carried out on the wind energy through the plurality of heat dissipation groups.

2. The apparatus as claimed in claim 1, wherein each of the heat dissipating blocks includes a plurality of heat dissipating pipes arranged in parallel, and a heat dissipating fin is detachably fixed to an outer periphery of each of the heat dissipating pipes, and the heat dissipating fin is spirally wound around an outer wall of the heat dissipating pipe.

3. The tail gas heat utilization device of the gas-fired crucible furnace as claimed in claim 2, wherein a baffle is provided on the inner wall of the box body above and below the plurality of heat dissipation groups, and the end portions of the plurality of heat dissipation fins are detachably fixed on the baffle; and the connecting pipes are detachably and fixedly arranged on the baffle.

4. The apparatus of claim 3, wherein each of the first connection members has a first hole and a second hole at both ends thereof, the first hole being matched with the exhaust pipe/pipe, and the second hole being matched with all of the heat dissipating pipes of one of the heat dissipating groups.

5. The tail gas heat utilization device of the gas-fired crucible furnace as claimed in claim 4, wherein second connectors are respectively provided at both ends of the connecting pipe, and each second connector is detachably fixed to the baffle plate; every the both ends of second connector are equipped with respectively second hole and third hole, the third hole can with the connecting pipe matches.

6. The apparatus for utilizing exhaust gas heat of a gas-fired crucible furnace as claimed in claim 1, wherein both ends of said connecting pipe and said first connecting head are fitted with high temperature-resistant seals.

7. The apparatus as claimed in claim 1, wherein the inner wall of the housing is further provided with heat insulating foam.