CN104677106A

CN104677106A - Insulated aluminum melting furnace

Info

Publication number: CN104677106A
Application number: CN201510111433.9A
Authority: CN
Inventors: 费金华
Original assignee: Suzhou Shengpula New Material Technology Co Ltd
Current assignee: Suzhou Shengpula New Material Technology Co Ltd
Priority date: 2015-03-13
Filing date: 2015-03-13
Publication date: 2015-06-03

Abstract

The invention relates to an insulated aluminum melting furnace which mainly comprises a burner, a furnace body, a discharge end, a heat retainer and a smoke outlet, wherein the burner and the discharge end are respectively arranged at a burning zone in the upper part of the furnace body and a discharge zone in the lower part of the furnace body; the exterior of the furnace body is wrapped with a sealed smoke exhaust interlayer; the lower end of the peripheral wall of the smoke exhaust interlayer is provided with a smoke exhaust pipe; the smoke outlet is communicated with the smoke exhaust interlayer; the smoke exhaust pipe is connected with the heat retainer; the exterior of the smoke exhaust interlayer is further wrapped with a vacuum shell; a reflecting cover is adhered to the inner wall of the vacuum shell; the inner wall of the vacuum shell and the peripheral wall of the smoke exhaust interlayer are vacuumizing zones. The insulated aluminum melting furnace is capable of effectively ensuring the temperature of the furnace body and obviously improving the thermal efficiency of aluminum melting furnace, and furthermore is relatively low in cost.

Description

The molten aluminium stove of a kind of insulation

Technical field

The present invention relates to a kind of molten aluminium equipment, especially, is a kind of molten aluminium stove.

Background technology

Molten aluminium stove is a kind of conventional equipment of industrial aluminium metallurgy, and exhaust gas temperature is too high is melt the low one of the main reasons of aluminium furnace thermal efficiency in early days always; Nowadays relatively more conventional molten aluminium stove is heat accumulation type aluminum melting furnace, and the heat recovery in smoke exhaust pipe stores and is used for the preheating of aluminium material by this molten aluminium stove, substantially increases the thermal efficiency of molten aluminium stove; Heat accumulation type aluminum melting furnace efficiently solves the too high problem of flue-gas temperature, but the principal element of the molten aluminium furnace thermal efficiency of impact also has one to be the radiation loss of furnace wall, in legacy equipment, heat exchange and the heat radiation of self of body of heater and surrounding air consume great energy, this makes the thermal efficiency of body of heater lower, and this respect cannot be well solved always; Conventional method is adopt the lower material of thermal conductivity factor to carry out multi-layer heat preserving process, but Costco Wholesale costly, and price and heat-insulating property cannot find equalization point always.

Summary of the invention

For the problems referred to above, the invention provides the molten aluminium stove of a kind of insulation, the molten aluminium stove of this insulation effectively can ensure furnace body temperature, and significantly improve the thermal efficiency of molten aluminium stove, manufacturing cost is lower simultaneously.

For solving the problem, the technical solution adopted in the present invention is: the molten aluminium stove of this insulation mainly includes burner, body of heater, discharge end, heat storage and exhaust opening; Described burner and discharge end are opened in the combustion zone of upper of furnace body and the discharge zone of lower portion of furnace body respectively; Be wrapped with airtight smoke evacuation interlayer at described body of heater, offer smoke exhaust pipe in the lower end of described smoke evacuation interlayer periphery wall, described exhaust opening is communicated with described smoke evacuation interlayer, and described smoke exhaust pipe connects described heat storage; Also be enclosed with vacuum shell in the outside of described smoke evacuation interlayer, be stained with reflector at the inwall of described vacuum shell; The periphery wall of described vacuum shell inwall and smoke evacuation interlayer is for vacuumizing region.

The invention has the beneficial effects as follows: in molten aluminium process, the high-temperature flue gas of discharging in body of heater enters smoke evacuation interlayer from exhaust opening, because described smoke evacuation interlayer is wrapped in body of heater outside, after high-temperature flue gas enters smoke evacuation interlayer, body of heater is outside little with the inner temperature difference, and the heat radiation that now body of heater is outside is little; Because the outside of interlayer of discharging fume is nearly vacuum area, this structure effectively prevents the heat trnasfer of smoke evacuation interlayer, and the heat radiation of interlayer of now discharging fume is carried out mainly through heat radiation; And the reflector on vacuum shell inwall effectively by the inside of heat radiation screening in vacuum shell, can prevent heat loss; After high-temperature flue gas is full of smoke evacuation interlayer, escape and enter heat storage from smoke exhaust pipe, heat high efficiente callback is utilized final combustion gas by described heat storage.

This insulation is melted aluminium stove and is utilized the flue gas of discharging to do protective layer, blocks the heat radiation of molten aluminium stove, is kept in body of heater efficiently by the heat of molten aluminium stove; In addition, the outside of smoke evacuation interlayer is closed by vacuum shell, protection, effectively prevents heat diffusion, effectively maintains extraneous operating temperature.

As preferably, at described smoke exhaust pipe place, air exhauster is installed; So that draught head certain in maintenance body of heater, effectively prevent smoke backflow.

As preferably, offer leakage preventing plug in the bottom of described smoke evacuation interlayer; When there is furnace body leakage, aluminium liquid can be discharged from leakage preventing plug timely and can not block smoke exhaust pipe, available protecting work safety.

As preferably, in the end of described leakage preventing plug, alarm is installed; Can alarm in time notify that engineer keeps in repair, to improve job security when leakage occurs.

Accompanying drawing explanation

Fig. 1 is the structural representation of the molten aluminium stove embodiment of this insulation.

Fig. 2 is the sectional view in middle A-A face embodiment illustrated in fig. 1.

Detailed description of the invention

Embodiment

In the embodiment shown in Fig. 1, Fig. 2, the molten aluminium stove of this insulation mainly includes burner 1, body of heater 2, discharge end 6, heat storage 5 and exhaust opening 21; Described burner 1 and discharge end 6 are opened in the combustion zone on body of heater 2 top and the discharge zone of body of heater 2 bottom respectively; Be wrapped with airtight smoke evacuation interlayer 3 at described body of heater 2, offer leakage preventing plug 31 in the bottom of described smoke evacuation interlayer 3, in the end of described leakage preventing plug 31, alarm is installed; Offer smoke exhaust pipe 32 in the lower end of described smoke evacuation interlayer 3 periphery wall, described exhaust opening 21 is communicated with described smoke evacuation interlayer 3, and described smoke exhaust pipe 32 connects described heat storage 5, is provided with air exhauster 7 at described smoke exhaust pipe 32 place; Also be enclosed with vacuum shell 4 in the outside of described smoke evacuation interlayer 3, be stained with reflector 41 at the inwall of described vacuum shell 4; The periphery wall of described vacuum shell 4 inwall and smoke evacuation interlayer 3 is for vacuumizing region.

In molten aluminium starts, the high-temperature flue gas of discharging in body of heater 2 enters smoke evacuation interlayer 3 from exhaust opening 21, because described smoke evacuation interlayer 3 is wrapped in body of heater 2 outside, after high-temperature flue gas enters smoke evacuation interlayer 3, transfer heat to rapidly the outer wall of body of heater 2, accelerate the preheating of body of heater 2; Now the heat of high-temperature flue gas is by high efficiente callback; After body of heater 2 outside is heated by high-temperature flue gas, body of heater 2 is outside little with the inner temperature difference, and the heat radiation that now body of heater 2 is outside is little; High-temperature flue gas is discharged from smoke exhaust pipe 32 after being full of smoke evacuation interlayer 3; Because the outside of interlayer 3 of discharging fume is nearly vacuum area, this structure effectively prevents the heat trnasfer of smoke evacuation interlayer 3, and the heat radiation of interlayer 3 of now discharging fume is carried out mainly through heat radiation; And the reflector 41 on vacuum shell 4 inwall effectively by the inside of heat radiation screening in vacuum shell 4, can effectively prevent heat loss; The high-temperature flue gas of therefore discharging from smoke exhaust pipe 32 be close to there is no a thermal loss enter heat storage 5, heat high efficiente callback is utilized final combustion gas by described heat storage 5; The air exhauster 7 being arranged on smoke exhaust pipe 32 end remains that smoke exhaust pipe 32 end exists certain negative pressure; Effectively prevent the backflow of high-temperature flue gas; The leakage preventing plug be arranged on bottom smoke evacuation interlayer 3 can discharge high temperature aluminum liquid in time when sewing appears in body of heater, and effectively prevent aluminium liquid from blocking smoke exhaust pipe 32, described siren can alarm in time notify that engineer keeps in repair, to improve job security.

This insulation is melted aluminium stove and is utilized the flue gas of discharging to do protective layer, blocks the heat radiation of molten aluminium stove, is kept in body of heater efficiently by the heat of molten aluminium stove; In addition, the outside of smoke evacuation interlayer 3, by vacuum shell 4 closed protective, effectively prevents heat diffusion, effectively maintains extraneous operating temperature; This external furnace body 2 is absorbed to extraradial heat by high-temperature flue gas and is transferred to heat storage 5 and reclaims; The molten aluminium stove of this insulation effectively improves the thermal efficiency of molten aluminium stove when not increasing more cost.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. the molten aluminium stove of insulation, the molten aluminium stove of this insulation mainly includes burner (1), body of heater (2), discharge end (6), heat storage (5) and exhaust opening (21); Described burner (1) and discharge end (6) are opened in the combustion zone on body of heater (2) top and the discharge zone of body of heater (2) bottom respectively; It is characterized in that: be wrapped with airtight smoke evacuation interlayer (3) at described body of heater (2), smoke exhaust pipe (32) is offered in the lower end of described smoke evacuation interlayer (3) periphery wall, described exhaust opening (21) is communicated with described smoke evacuation interlayer (3), and described smoke exhaust pipe (32) connects described heat storage (5); Also be enclosed with vacuum shell (4) in the outside of described smoke evacuation interlayer (3), be stained with reflector (41) at the inwall of described vacuum shell (4); The periphery wall of described vacuum shell (4) inwall and smoke evacuation interlayer (3) is for vacuumizing region.

2. aluminium stove is melted in insulation according to claim 1, it is characterized in that: offer leakage preventing plug (31) in the bottom of described smoke evacuation interlayer (3).

3. aluminium stove is melted in insulation according to claim 2, it is characterized in that: be provided with alarm in the end of described leakage preventing plug (31).

4. aluminium stove is melted in the insulation according to claim 1 or 3, it is characterized in that: be provided with air exhauster (7) at described smoke exhaust pipe (32) place.