CN217403126U - Smelting furnace capable of efficiently recovering heat energy of tail gas - Google Patents

Abstract

The utility model relates to the technical field of metal smelting, in particular to a smelting furnace for recovering high-efficiency tail gas heat energy, which comprises a smelting furnace body, wherein the upper end surface of the smelting furnace body is provided with a furnace cover; the smelting furnace body is provided with a combustion chamber and a smelting chamber which are coaxially arranged, the upper end of the smelting furnace body is provided with an exhaust pipe of which one end is communicated with the smelting chamber, the other end of the exhaust pipe is provided with a preheating mechanism, one side wall of the smelting furnace body is provided with an air inlet pipe communicated with the combustion chamber, the preheating mechanism comprises a heat-insulating tank sleeved on the outer wall of the air inlet pipe, a preheating pipe spirally wound on the outer wall of the air inlet pipe is arranged in the heat-insulating tank, one end of the preheating pipe is connected with the exhaust pipe, and the other end of the preheating pipe extends out of the heat-insulating tank and is connected with a treatment box; through the utility model discloses a smelting furnace of high-efficient tail gas heat recovery, it can realize prolonging the time that the preheating tube heated the intake pipe to improve the effect of preheating efficiency better.

Description

Smelting furnace capable of efficiently recovering heat energy of tail gas

Technical Field

The utility model relates to a metal smelting technical field, specifically speaking relates to a smelting furnace of high-efficient tail gas heat recovery.

Background

A melting furnace is a device for converting solid metal into liquid metal at a high temperature, adding necessary alloy components, and melting the metal into a desired alloy through processes such as slagging-off and refining, and is mostly used in industrial production.

The traditional smelting furnace can generate a large amount of tail gas when smelting solid metal, a large amount of heat energy can be reserved in the tail gas, and the waste of the heat energy can be caused when directly discharging the tail gas generated in smelting into the air; in the smelting furnace for efficiently recovering heat energy of tail gas disclosed in the prior art with the patent number of CN213208624U, the heat energy in the tail gas generated by smelting can be preheated to the external combustion air through the heat accumulating type heat exchanger and the dividing wall type heat exchanger, so that the effect of recycling the heat energy in the tail gas generated by smelting is achieved

Although the effect of recycling heat energy in tail gas has been solved to above-mentioned patent, when ambient temperature is lower, the temperature of the combustion air who gets into the smelting furnace also can be lower relatively, what it adopted is the mode of straight tube heating, and it is shorter at the time of the flow of high temperature tail gas in the preheating pipe, and preheating efficiency is lower, so when preheating combustion air, just need more time to preheat combustion air or prolong the length of preheating pipe.

SUMMERY OF THE UTILITY MODEL

Have the time of the flow of high temperature tail gas in preheating pipe shorter among the prior art, preheat the lower defect of efficiency, the utility model provides a smelting furnace of high-efficient tail gas heat recovery. The time that it can realize prolonging the preheating tube and heat the intake pipe to improve the effect of preheating efficiency better.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

a smelting furnace for efficiently recovering thermal energy of tail gas comprises a smelting furnace body, wherein a furnace cover is arranged on the upper end surface of the smelting furnace body; the smelting furnace body is equipped with the combustion chamber of coaxial setting, smelt the chamber, smelting furnace body upper end department is equipped with one end and communicates in the blast pipe of smelting the chamber, the other end of blast pipe is equipped with preheating mechanism, a smelting furnace body lateral wall department is equipped with the intake pipe that communicates in the combustion chamber, preheating mechanism locates the heat-preserving container of intake pipe outer wall including the cover, be equipped with the spiral in the heat-preserving container and wind the preheating pipe of establishing at the intake pipe outer wall, preheating pipe one end is connected with the blast pipe, the other end stretches out the heat-preserving container and is connected with the processing case.

Through the utility model discloses a smelting furnace of high-efficient tail gas heat recovery, its effective preheating area that can increase the preheater tube, the improvement of preferred preheats efficiency.

Wherein, the setting of spiral helicine preheater pipe for the time that high temperature tail gas flows in the preheater pipe is longer, has increased the preheat time of high temperature tail gas combustion air in to the intake pipe, thereby the preheating efficiency of improvement preheater pipe that can the preferred.

Wherein, the setting of holding tank for the temperature can maintain certain numerical value in the holding tank, thereby the reduction that can be the preferred is to combustion air's preheating time in the intake pipe.

Preferably, the upper end surface of the smelting cavity is provided with a gas collecting hood, and the gas collecting hood is funnel-shaped and gradually increases in radius from top to bottom; the opening end of the gas collecting hood facing the furnace cover is provided with a fixing part for fixing the gas collecting hood, and one end of the fixing part extends out of the furnace cover.

In the utility model, the gas collecting hood is arranged, so that the tail gas generated during smelting in the smelting cavity can enter the exhaust pipe through the gas collecting hood, and the tail gas generated during smelting can be conveniently collected; through the setting of mounting for the gas collecting channel can be fixed on the furnace cover through the mounting, thereby comparatively convenient realization to the fixed of gas collecting channel.

Preferably, one end of the fixing piece extending out of the furnace cover is provided with a high-temperature filter, and two end faces of the high-temperature filter, which are parallel to the furnace cover, are provided with connecting pieces; one end of the high-temperature filter is communicated with the end part of the fixing piece extending out of the furnace cover, and the other end of the high-temperature filter is communicated with the exhaust pipe.

In the utility model, through the arrangement of the high-temperature filter, impurities such as particles in the tail gas can be filtered by the high-temperature filter, thereby conveniently realizing the filtering of the tail gas; through the setting of connecting piece for high temperature filter can be connected with mounting and blast pipe through the connecting piece, thereby comparatively convenient realization link together high temperature filter and blast pipe and smelting furnace.

Preferably, the high-temperature filter comprises a filter shell with openings at two ends, a plurality of high-temperature filter plates are arranged in the filter shell, and a first cover plate fixed through bolts is arranged on the end face, perpendicular to the furnace cover, of the filter shell.

The utility model discloses in, through the setting of first apron for operating personnel pull down first apron just can trade the filter, thereby comparatively convenient realization to the change of filter.

Preferably, the treatment box comprises a box body, a partition plate is arranged in the box body, and the partition plate divides the treatment box into a treatment cavity and a condensation cavity which are arranged up and down; the end part of the preheating pipe far away from the smelting furnace body extends into the treatment cavity; a condensing pipe with two ends extending out of the treatment box is arranged in the condensing cavity; the baffle is provided with an air hole for communicating the processing cavity with the condensation cavity.

In the utility model, the harmful gas in the tail gas can be neutralized by the treatment liquid in the treatment cavity through the arrangement of the treatment cavity, so that the tail gas can be conveniently discharged after being treated; through the arrangement of the condenser pipe, the temperature of the high-temperature tail gas can be reduced by the condenser pipe, and condensate water is generated, so that the high-temperature tail gas can be better recycled; through the setting of gas pocket for tail gas that the processing liquid was handled can get into the condensation chamber through its sky, thereby comparatively convenient realization tail gas is handling the flow of incasement.

Preferably, the end surface of the treatment box, which is far away from the smelting furnace body, is provided with a second through hole and a third through hole which are respectively communicated with the treatment cavity and the condensation cavity; the upper end face of the box body is provided with a second cover plate.

The utility model discloses in, through the setting of second through-hole and third through-hole for the comdenstion water in the treatment fluid in the treatment chamber and the condensation chamber can discharge through second through-hole and third through-hole and handle the case, thereby comparatively convenient realization to the clearance of handling the case.

Preferably, the end face of the partition plate facing the condensation chamber and the end face of the treatment chamber facing the partition plate are both obliquely arranged.

The utility model discloses in, through the equal slope setting of terminal surface of baffle orientation condensation chamber and the terminal surface of treatment chamber orientation baffle for when clearing up the treatment case, discharge treatment case that treatment fluid and comdenstion water can be better, thereby can be better clear up the treatment case.

Preferably, an exhaust valve is arranged on the upper end surface of the furnace cover.

The utility model discloses in, through discharge valve's setting for when smelting, the tail gas that the burning chamber produced can discharge through discharge valve, thereby the furnace pressure that can be better is in comparatively stable numerical value.

Preferably, the end of the inlet pipe remote from the furnace body is provided with a suction pump.

The utility model discloses in, through the setting of aspiration pump for the outside combustion air of smelting furnace can get into in the smelting furnace through the effect of aspiration pump, thereby comparatively convenient messenger combustion air gets into in the smelting furnace.

Drawings

FIG. 1 is an overall schematic view of a high-efficiency exhaust heat energy recovery melting furnace according to example 1;

fig. 2 is a schematic view of a melting furnace body in example 1;

fig. 3 is a schematic view of the gas collecting channel and the fixing member in embodiment 1;

FIG. 4 is a schematic sectional view of a high-temperature filter in example 1;

FIG. 5 is a schematic sectional view of the holding tank and the preheating tube in example 1;

FIG. 6 is a schematic view of a treatment tank in example 1;

FIG. 7 is a schematic sectional view of a treatment tank in example 1.

The names of the parts indicated by the numerical references in the drawings are as follows:

100. a smelting furnace body; 110. a furnace cover; 120. a high temperature filter; 130. an exhaust pipe; 140. a preheating device; 150. an air inlet pipe; 160; an air pump; 170. a treatment box; 180. an exhaust valve; 200, a combustion chamber; 210. a smelting chamber; 300. a gas-collecting hood; 310. a fixing member; 400. a filter housing; 410. a first cover plate; 420. a high temperature filter plate; 430. a connecting member; 500. a heat preservation tank; 510. a preheating pipe; 600. a box body; 610. a second cover plate; 620. a third through hole; 630. a second through hole; 700. a partition plate; 710. a condensing chamber; 720. a processing chamber; 730. a condenser tube; 740. and (4) air holes.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention only and are not limiting.

Example 1

As shown in fig. 1 to 7, the present embodiment provides a smelting furnace for recovering heat energy from exhaust gas with high efficiency, which comprises a smelting furnace body 100, wherein a furnace cover 110 is arranged on the upper end surface of the smelting furnace body 100; smelting furnace body 100 is equipped with the combustion chamber 200 of coaxial setting, smelt chamber 210, smelting furnace body 100 upper end department is equipped with one end and communicates in the blast pipe 130 of smelting chamber 210, the other end of blast pipe 130 is equipped with preheating mechanism 140, smelting furnace body 100 lateral wall department is equipped with the intake pipe 150 that communicates in combustion chamber 200, preheating mechanism 140 locates the holding vessel 500 of intake pipe 150 outer wall including the cover, be equipped with the spiral in the holding vessel 500 around establishing the preheating pipe 510 at intake pipe 150 outer wall, preheating pipe 510 one end is connected with blast pipe 130, the other end stretches out holding vessel 500 and is connected with processing box 170.

Through the arrangement of the spiral preheating pipe 510 in the embodiment, the flowing time of the high-temperature tail gas in the preheating pipe 510 is longer, and the preheating time of the high-temperature tail gas to the combustion air in the air inlet pipe 150 is increased, so that the preheating efficiency of the preheating pipe 510 can be improved better; through the arrangement of the heat preservation tank 500, the temperature in the heat preservation tank 500 can be maintained at a certain value, and therefore the preheating time of the combustion air in the air inlet pipe 150 can be reduced better.

In this embodiment, the upper end surface of the smelting cavity 210 is provided with a gas-collecting hood 300, and the gas-collecting hood 300 is funnel-shaped and has a radius gradually increasing from top to bottom; the open end of the gas collecting hood 300 facing the furnace cover 110 is provided with a fixing member 310 for fixing the gas collecting hood 300 and extending out of the furnace cover 110 at one end.

Through the arrangement of the gas collecting hood 300 in the embodiment, tail gas generated in the smelting process of the smelting cavity 210 can enter the exhaust pipe 130 through the gas collecting hood 300, so that the tail gas generated in the smelting process can be collected conveniently; through the arrangement of the fixing member 310, the gas collecting hood 300 can be fixed on the furnace cover 110 through the fixing member 310, so that the gas collecting hood 300 can be conveniently fixed.

In this embodiment, the high temperature filter 120 is disposed at one end of the fixing member 310 extending out of the furnace cover 110, and two end surfaces of the high temperature filter 120 parallel to the furnace cover 110 are both provided with a connecting member 430; one end of the high temperature filter 120 is communicated with the end of the fixing member 310 extending out of the furnace cover 110, and the other end is communicated with the exhaust pipe 130.

Through the arrangement of the high-temperature filter 120 in the embodiment, impurities such as particles in the exhaust gas can be filtered by the high-temperature filter 120, so that the exhaust gas can be conveniently filtered; through the arrangement of the connecting member 430, the high temperature filter 120 can be connected with the fixing member 310 and the exhaust pipe 130 through the connecting member 430, so that the connection of the high temperature filter 130 and the exhaust pipe 130 with the smelting furnace is conveniently realized.

In this embodiment, the high temperature filter 120 includes a filter housing 400 with openings at both ends, a plurality of high temperature filter plates 420 are disposed in the filter housing 400, and a first cover plate 410 fixed by bolts is disposed on an end surface of the filter housing 400 perpendicular to the furnace cover 110.

Through the setting of first apron 410 in this embodiment for operating personnel just can trade filter 420 with first apron 410 pulling down, thereby comparatively convenient realization to filter 420's change.

In this embodiment, the treatment tank 170 includes a tank body 600, a partition 700 is provided in the tank body 600, and the partition 700 divides the treatment tank 170 into a treatment chamber 720 and a condensation chamber 710 which are arranged up and down; the end of the preheating tube 510 remote from the furnace body 100 protrudes into the processing chamber 720; a condensing pipe 730 with two ends extending out of the treatment box 170 is arranged in the condensing cavity 710; the partition 700 is provided with an air hole 740 communicating the process chamber 720 and the condensation chamber 710.

Through the arrangement of the treatment cavity 720 in the embodiment, harmful gases in the tail gas can be neutralized by the treatment liquid in the treatment cavity 720, so that the tail gas can be conveniently and rapidly discharged after being treated; through the arrangement of the condensing pipe 730, the condensing pipe 730 can reduce the temperature of the high-temperature tail gas and generate condensed water, so that the high-temperature tail gas can be better recycled; through the setting of gas pocket 740 for the tail gas that has handled through the treatment fluid can get into condensation chamber 710 through the gas pocket, thereby comparatively convenient realization tail gas flow in handling the case 170.

In this embodiment, the end surface of the treatment box 170 away from the melting furnace body 100 is provided with a second through hole 630 and a third through hole 620 which are respectively communicated with the treatment cavity 720 and the condensation cavity 710; the upper end surface of the case 600 is provided with a second cover 610.

Through the arrangement of the second through hole 630 and the third through hole 620 in this embodiment, the treatment liquid in the treatment chamber 720 and the condensed water in the condensation chamber 710 can be discharged out of the treatment tank 170 through the second through hole 630 and the third through hole 620, so that the treatment tank 170 can be conveniently cleaned (the second through hole and the third through hole are in a closed state during the operation of the smelting furnace).

In this embodiment, the end surface of the partition 700 facing the condensation chamber 710 and the end surface of the treatment chamber 720 facing the partition 700 are both disposed obliquely.

Through the equal slope setting of the terminal surface of baffle 700 towards condensation chamber 710 and the terminal surface of treatment chamber 720 towards baffle 700 in this embodiment for when clearing up treatment tank 170, discharge that treatment solution and comdenstion water can be better handles tank 170, thereby can be better clear up treatment tank 170.

In this embodiment, an exhaust valve 180 is disposed on the upper end surface of the furnace cover 110.

Through the arrangement of the exhaust valve 180 in the embodiment, when smelting is carried out, tail gas generated by the combustion chamber 200 can be discharged through the exhaust valve 180, so that the furnace pressure can be in a stable value well.

In this embodiment, the end of the gas inlet pipe 150 remote from the furnace body 100 is provided with a suction pump 160.

Through the setting of aspiration pump 160 for the outside combustion air of smelting furnace can get into in the smelting furnace through the effect of aspiration pump 160, thereby comparatively convenient messenger combustion air gets into in the smelting furnace.

When the smelting furnace with high-efficiency tail gas heat energy recovery of the embodiment is used specifically, when a worker smelts metal, firstly the furnace cover 110 is opened, the metal to be smelted is put into the smelting chamber 210, then the furnace cover 110 is closed, the air suction pump 160 is opened, during the smelting process, tail gas generated by the smelting chamber 210 enters the exhaust pipe 130 through the gas collecting hood 300 and flows into the preheating pipe 510 arranged in the heat preservation tank 500 through the exhaust pipe 130, the tail gas flows into the treatment box 170 connected with the preheating pipe 510 after passing through the preheating pipe 510, after entering the treatment box 170, because the end of the preheating pipe 510 extending into the treatment chamber 720 is lower than the liquid level of the treatment liquid in the treatment chamber 720, the tail gas firstly passes through the treatment chamber 720, the treatment liquid in the treatment chamber 720 can absorb harmful gas in the tail gas, the tail gas treated by the treatment liquid can flow into the condensation chamber 710 through the air hole 740 arranged on the partition plate 700, the condensation pipe 730 in the condensation chamber 710 condenses and cools the treated tail gas, and then discharges the tail gas.

Because the preheating pipe 510 is arranged on the outer wall of the air inlet pipe 150 in a sleeved mode, heat energy in tail gas can heat the air inlet pipe 150 to preheat combustion air in the air inlet pipe 150, the heat preservation tank 500 can store the heat emitted by the preheating pipe 510, the temperature of the heat preservation tank 500 can be kept at a high temperature, and therefore the preheating time of the combustion air in the air inlet pipe 150 can be reduced better.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in the claims of the present invention should be included in the scope of the present invention.

Claims (9)

1. The utility model provides a smelting furnace of high-efficient tail gas heat recovery which characterized in that: comprises a smelting furnace body (100), wherein a furnace cover (110) is arranged on the upper end surface of the smelting furnace body (100); smelting furnace body (100) are equipped with combustion chamber (200) of coaxial setting, smelt chamber (210), smelting furnace body (100) upper end department is equipped with one end and communicates in blast pipe (130) of smelting chamber (210), the other end of blast pipe (130) is equipped with preheats mechanism (140), smelting furnace body (100) a lateral wall department is equipped with intake pipe (150) that communicate in combustion chamber (200), preheat mechanism (140) including the cover locate intake pipe (150) outer wall holding tank (500), be equipped with spiral in holding tank (500) around establishing at intake pipe (150) outer wall preheating pipe (510), preheating pipe (510) one end is connected with blast pipe (130), the other end stretches out holding tank (500) and is connected with treatment box (170).

2. The smelting furnace for efficient tail gas heat energy recovery according to claim 1, characterized by: a gas-collecting hood (300) is arranged on the upper end surface of the smelting cavity (210), and the gas-collecting hood (300) is funnel-shaped and the radius of the gas-collecting hood is gradually increased from top to bottom; the opening end of the gas-collecting hood (300) facing the furnace cover (110) is provided with a fixing piece (310) which is used for fixing the gas-collecting hood (300) and one end of which extends out of the furnace cover (110).

3. The smelting furnace for efficient tail gas heat energy recovery according to claim 2, characterized by: one end of the fixing piece (310) extending out of the furnace cover (110) is provided with a high-temperature filter (120), and two end faces of the high-temperature filter (120) parallel to the furnace cover (110) are both provided with connecting pieces (430); one end of the high-temperature filter (120) is communicated with the end part of the fixing piece (310) extending out of the furnace cover (110), and the other end is communicated with the exhaust pipe (130).

4. A smelting furnace with high efficiency of tail gas heat energy recovery according to claim 3, characterized in that: the high-temperature filter (120) comprises a filter shell (400) with openings at two ends, a plurality of high-temperature filter plates (420) are arranged in the filter shell (400), and a first cover plate (410) fixed through bolts is arranged on the end face, perpendicular to the furnace cover (110), of the filter shell (400).

5. The smelting furnace for efficient tail gas heat energy recovery according to claim 1, characterized by: the treatment box (170) comprises a box body (600), a partition plate (700) is arranged in the box body (600), and the treatment box (170) is divided into a treatment cavity (720) and a condensation cavity (710) which are arranged up and down by the partition plate (700); the end of the preheating pipe (510) far away from the smelting furnace body (100) extends into the processing cavity (720); a condensing pipe (730) with two ends extending out of the treatment box (170) is arranged in the condensing cavity (710); the partition plate (700) is provided with an air hole (740) for communicating the processing chamber (720) and the condensation chamber (710).

6. The smelting furnace for efficient tail gas heat energy recovery according to claim 5, wherein: the end surface of the treatment box (170) far away from the smelting furnace body (100) is provided with a second through hole (630) and a third through hole (620) which are respectively communicated with the treatment cavity (720) and the condensation cavity (710); the upper end surface of the box body (600) is provided with a second cover plate (610).

7. The smelting furnace for efficient tail gas heat energy recovery according to claim 6, characterized by: the end face of the partition plate (700) facing the condensation cavity (710) and the end face of the treatment cavity (720) facing the partition plate (700) are both obliquely arranged.

8. The smelting furnace for efficient tail gas heat energy recovery according to claim 1, characterized by: an exhaust valve (180) is arranged on the upper end surface of the furnace cover (110).

9. The smelting furnace for efficient tail gas heat energy recovery according to claim 1, characterized by: the end part of the air inlet pipe (150) far away from the smelting furnace body (100) is provided with an air extracting pump (160).

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