CN206279247U - A kind of uptake flue mouth sets the rotary heating furnace of partition wall - Google Patents

Abstract

The utility model discloses the rotary heating furnace that a kind of uptake flue mouth sets partition wall, including heating furnace body, the interior wall and exterior wall being arranged concentrically, preheating section, one section of heating, two sections of heating, soaking zone, feeding gate, discharge door and uptake flue are sequentially arranged between interior wall and exterior wall, it is characterized in setting partition wall before segment trailer uptake flue entrance is preheated, lay two support beams, partition wall and support beam outside pouring fireproof material in partition wall bottom；The first short partition wall and the second short partition wall, the first short partition wall and the second short partition wall bottom and furnace bottom infinite approach are set between feeding gate and discharge door, bottom gap only allows furnace bottom iron scale to pass through.The utility model has the advantages that simple structure, is easily controlled, and it is safe and reliable to operation, realize energy-saving and emission-reduction, it is to avoid overheat accident occurs in steel billet, reduce iron and steel stock scaling loss and improve heating quality.

Description

A kind of uptake flue mouth sets the rotary heating furnace of partition wall

Technical field

The utility model belongs to industrial furnace field, more particularly to a kind of rotary heating furnace.

Background technology

In increasingly competitive market, the competition of oneself improves in reduces cost by every means in each enterprise Power, for steel industry, technological process is very stable cannot to do larger change, improve existing equipment and improve work effect Rate turns into the Main way of reduces cost.Rotary heating furnace is widely used as a kind of firing equipment in steel industry, for steel Base is heated to required technological temperature.

Preheating section, bringing-up section and soaking zone are provided with rotary heating furnace, discharging opening and charging aperture are provided with soaking zone, Both close to.During normal production, the furnace gas of soaking zone is removed and overflow a part of outer, most of Ying Yugang from discharging door gap The base direction of motion enters back into flue after inversely flowing into two sections of heating, one section of heating, preheating section.Due to by annular furnace structure influence, Apart from close, exhaust opening is just near charging aperture, then discharging opening is also close apart from exhaust opening for discharging opening and charging aperture.Using upper Fume exhausting type is discharged fume, and smoke vent position is high, after furnace gas has nature floating trend, furnace gas to enter preheating section, a part of stove of soaking zone Gas is not used for heating steel billet, and sucks uptake flue by the bottom gap of twice partition wall by stronger draft so that soaking Section discharge end furnace gas is not fully filled burner hearth, and the discharging door mouthful more difficult maintenance slight positive pressure state of furnace bottom plane, furnace gas temperature is higher, equally The chimney of height has bigger draft, and takes away the more waste heats under the furnace gas of same traffic, causes the waste of the energy, places Steel billet on furnace bottom cannot be preheated preferably in stove low-temperature region, and when normally producing, heating efficiency is not enough, it is impossible to meet Technological temperature requirement；Other a part of furnace gas of soaking zone discharging door sucks flue and is in negative pressure, is also easy to cause furnace gas herein Mobility is big, and the convective heat exchange of furnace gas is strengthened, and easily sucks cold wind, and furnace atmosphere is in easily oxidisability, due to being herein high temperature Region, compared with the steel billet under same furnace temperature, under furnace gas geo-stationary, the environmental condition in relative reduction atmosphere, , easily there is overheat, burning accident in the static steel billet under this ambient condition.Currently in order to maintaining pressure-fired, one is to adopt The method for turning down flue valve is taken, whole furnace pressure level is raised, increases furnace gas flow resistance, furnace gas poor fluidity, low temperature Area's convective heat exchange effect is deteriorated；Two is to take increase soaking zone heating load method, increases combustion product amount, furnace gas is full of stove Thorax, but this mode causes soaking zone furnace temperature hot soak condition, it is easy to steel billet is produced overheat or burning.

Utility model content

To solve the above problems, the purpose of this utility model is to provide a kind of floss hole and sets smoke exhausting type in the annular of partition wall and adds Hot stove, simple structure, easy construction is easily controlled, safe and reliable to operation, realizes energy-saving and emission-reduction, reduces iron and steel stock scaling loss and carries Heating quality high.

To achieve the above object, the utility model adopts the following technical scheme that a kind of uptake flue mouth sets the annular of partition wall Heating furnace, including heating furnace body, the interior wall and exterior wall being arranged concentrically, be sequentially arranged between interior wall and exterior wall preheating section, One section of heating, two sections of heating, soaking zone, feeding gate, discharge door and uptake flue, are characterized in preheating segment trailer uptake flue Set partition wall before entrance, two support beams are laid in described partition wall bottom, lead to cooling water in support beam, surface weldering lacing wire, partition wall and Support beam outside pouring fireproof material；The first short partition wall and the second short partition wall, first are set between described feeding gate and discharge door Short partition wall and the second short partition wall bottom and furnace bottom infinite approach, bottom gap only allows furnace bottom iron scale to pass through.

The utility model is further improved, what the steel billet that only permission maximum height size is reserved in described partition wall bottom passed through Highly.

The utility model is further improved, and described support beam is made from seamless steel pipe, logical cooling water, seamless steel in pipe Weld lacing wire in tube wall surface.

The utility model is further improved, and described partition wall thickness is 800~1000mm.

When using, partition wall is set up before uptake flue entrance, improve furnace pressure along the distribution on furnace superintendent direction, make pressure Distribution more rationally, has greatly driven up the furnace pressure at soaking zone discharge door, becomes discharging door door holding pressure-fired Easily；Force furnace gas descending, before uptake flue is entered, press close to the operation of furnace bottom surface, steel billet is fully absorbed stove in low-temperature zone Gas waste heat, reduces furnace gas and takes away heat；Furnace gas temperature is reduced, makes stack draught relatively reduced again so that under normal production status, Flue shutter can be adjusted in larger opening (more than 70%), give full play to the maximum potential of stack draught, promote furnace gas to exist The speed of service is accelerated in stove, and particularly furnace gas speed of service between low-temperature space, steel billet gap is accelerated, convective heat exchange effect It is good.

Compared with prior art, it is safe and reliable to operation the utility model has the advantages that simple structure, is easily controlled, realize Energy-saving and emission-reduction, it is to avoid overheat accident occurs in steel billet, reduce iron and steel stock scaling loss and improve heating quality.

Brief description of the drawings

In order to illustrate more clearly of the technical scheme of the utility model embodiment, below will be to make needed for the present embodiment Accompanying drawing is briefly described, it should be apparent that, for those of ordinary skill in the art, do not paying creative work Under the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the rotary heating furnace overlooking the structure diagram that a kind of uptake flue mouth sets partition wall.

Fig. 2 is the annular-heating furnace body cross-sectional view that a kind of uptake flue mouth sets partition wall.

Fig. 3 is that a kind of uptake flue mouth sets the rotary heating furnace steel billet of partition wall from feeding gate to discharge door surface temperature along stove Distribution map long.

In figure：1st, annular-heating furnace body 2, preheating section 3-1, the 3-2 of bringing-up section one, heating two section 4, soaking zone 5, Feeding gate 6, discharge door 7, uptake flue 8, partition wall 9, the first short partition wall 10, the second short partition wall 11, interior wall 12, exterior wall 13rd, furnace bottom.

Specific embodiment

Below against accompanying drawing, by the description to embodiment, specific embodiment of the present utility model is each as involved by The shape of component, the mutual alignment between construction, each several part and annexation, the effect of each several part and operation principle, manufacture work Skill and operate with method etc., are described in further detail, to help those skilled in the art to invention of the present utility model Design, technical scheme have more complete, accurate and deep understanding.

Embodiment

A kind of uptake flue mouth sets the rotary heating furnace of partition wall, including heating furnace body 1, the interior wall 11 being arranged concentrically and outer Wall 12, preheating section 2, one section of 3-1 of heating is sequentially arranged between interior wall 11 and exterior wall 12, two sections of 3-2, soaking zones 4 is heated, is entered Bin gate 5, discharge door 6 and uptake flue 7, are characterized in setting partition wall 8 before the entrance of preheating segment trailer uptake flue 7, it is described every Two support beams are laid in the bottom of wall 8, and cooling water, surface weldering lacing wire, partition wall and support beam outside cast fire proofed wood are led in support beam Material；The first short partition wall 9 and the second short partition wall 10, the first short partition wall 9 and the second short partition wall 10 are set between feeding gate 5 and discharge door 6 Bottom and the infinite approach of furnace bottom 13, bottom gap only allows the iron scale of furnace bottom 13 to pass through.Furnace height is in embodiment 1550mm, the wall of partition wall 8 is highly 870mm, and partition wall lower edge is away from the level 680mm of furnace bottom 13.

Further, the reserved height for only allowing the steel billet of maximum height size to pass through in the bottom of partition wall 8.

Further, support beam is made from seamless steel pipe, external diameter φ 108 or φ 114, wall thickness 8mm or 10mm, logical in pipe Water cooling, the weldering lacing wire of seamless steel pipe tube wall surface.

Further, the thickness of partition wall 8 is 800~1000mm.

When using, partition wall 8 is set up before the entrance of uptake flue 7, improve furnace pressure along the distribution on furnace superintendent direction, make pressure Power distribution more rationally, has greatly driven up the furnace pressure at soaking zone discharge door 6, makes the door of discharge door 6 keep pressure-fired to become Obtain easily；Force furnace gas descending, before uptake flue 7 is entered, press close to the operation of the surface of furnace bottom 13, steel billet is fully inhaled in low-temperature zone Burner gas residual heat is received, furnace gas is reduced and is taken away heat；Furnace gas temperature is reduced, makes stack draught relatively reduced again so that normally to produce shape Under state, flue shutter can be adjusted in larger opening (more than 70%), give full play to the maximum potential of stack draught, promote stove Gas speed of service in stove is accelerated, and particularly furnace gas speed of service between low-temperature space, steel billet gap is accelerated, convective heat exchange effect It is really good.

More than, preferred embodiment only of the present utility model, but protection domain of the present utility model is not limited thereto, and appoints What those familiar with the art the change that can readily occur in or replaces in the technical scope that the utility model is disclosed Change, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with claim The protection domain for being defined is defined.

Claims (4)

1. a kind of uptake flue mouth sets the rotary heating furnace of partition wall, including heating furnace body (1), the interior wall being arranged concentrically (11) and Exterior wall (12), is sequentially arranged preheating section (2), one section of heating (3-1), two sections of heating between interior wall (11) and exterior wall (12) (3-2), soaking zone (4), feeding gate (5), discharge door (6) and uptake flue (7), it is characterised in that rise cigarette in preheating segment trailer Partition wall (8) is set before road (7) entrance, two support beams are laid in described partition wall (8) bottom, cooling water, surface weldering are led in support beam Lacing wire, partition wall and support beam outside pouring fireproof material；The first short partition wall is set between described feeding gate (5) and discharge door (6) (9) and the second short partition wall (10), the first short partition wall (9) and the second short partition wall (10) bottom and furnace bottom (13) infinite approach, bottom Gap only allows furnace bottom (13) iron scale to pass through.

2. a kind of uptake flue mouth according to claim 1 sets the rotary heating furnace of partition wall, it is characterised in that it is described every The reserved height for only allowing the steel billet of maximum height size to pass through in wall (8) bottom.

3. a kind of uptake flue mouth according to claim 1 sets the rotary heating furnace of partition wall, it is characterised in that described branch Support beam is made from seamless steel pipe, logical cooling water in pipe, the weldering lacing wire of seamless steel pipe tube wall surface.

4. a kind of uptake flue mouth according to claim 1 sets the rotary heating furnace of partition wall, it is characterised in that it is described every Wall (8) thickness is 800~1000mm.