CN207035856U - Preheating furnace - Google Patents

Abstract

The utility model discloses a kind of preheating furnace, preheating furnace includes body of heater, siege, heating radiation pipe and the turn-down rig of annular.Furnace chamber is limited in body of heater；Siege is located in furnace chamber, and siege horizontally rotates around the central axis of body of heater；Heating radiation pipe is located on body of heater and is radiated at the top of siege；Turn-down rig includes：Rotary shaft and the stirring part for digging material on siege, rotary shaft are located on body of heater, and stirring part includes linkage section and active section, and linkage section connects on the rotating shaft, and active section is directed away from the direction extension of rotary shaft in the rotation direction of rotary shaft.According to the preheating furnace of the utility model embodiment, by setting stirring part on siege top, during material movement, stirring part can stir to material, so that levels material scattering rearrangement, uniform heating of the heater to material is realized, so as to improve the production efficiency of preheating furnace and product quality.

Description

Preheating furnace

Technical field

It the utility model is related to petrochemical industry heat-processing equipment field, more particularly to a kind of preheating furnace.

Background technology

In petrochemical industry heat-processing equipment field, preheating furnace is the nucleus equipment for producing calcium carbide.The core component of preheating furnace For the plane siege of ring rotation movement can be carried out, and there are furnace shell and refractory material protection on the outside of siege with furnace roof.Operating Cheng Zhong, pass through pavier blanking so that siege is paved with material, and siege top is provided with gas-fired radiation pipe device to spreading cloth on siege Material heated.Because combustion chamber and burner hearth are by radiant tube isolated, therefore the mode category anaerobic of preheating furnace heated material adds Heat, anaerobic heating can prevent the fuel gas that material volatilizees from combustion explosion occurs.Preheating furnace can be controlled by controlling air-fuel ratio The reducing atmosphere of each stove section is made, is heated and reducing material by radiation, convection current, heat transfer.According to the difference of technique, material is most High heating-up temperature is up to 900 DEG C.

Material is geo-stationary in heating process in preheating furnace, and heater is provided only on siege top, heating side Formula is mainly by radiation, convection current, conduction.But because material can all have certain thickness after cloth is spread to siege, this can cause The upper strata of material receives that heat is more, and lower floor's material is covered by upper materials within the unit interval, receives that heat is few, and material is heated Unbalanced, chemical reaction degree difference drastically influence product quality, or even produce a large amount of waste products.

Utility model content

The utility model is intended at least solve one of technical problem present in prior art.Therefore, the utility model purport A kind of preheating furnace is being proposed, the preheating furnace can uniformly be heated to material, improve production efficiency and product quality.

According to the preheating furnace of the utility model embodiment, including：The body of heater of annular, furnace chamber is limited in the body of heater；Stove Bed, the siege are located in the furnace chamber, and the siege horizontally rotates around the central axis of the body of heater；Heating radiation pipe, The heating radiation pipe is located on the body of heater and is radiated at the top of the siege；Turn-down rig, the turn-down rig include： Rotary shaft and the stirring part for digging material on the siege, the rotary shaft are located on the body of heater, the stirring part bag Linkage section and active section are included, the linkage section is connected in the rotary shaft, the work in the rotation direction of the rotary shaft The direction extension of the rotary shaft is directed away from as section.

According to the preheating furnace of the utility model embodiment, by setting turn-down rig on siege top, in material movement During, stirring part can stir to material so that the material of lower floor translates into upper strata, realizes heater to the equal of material Even heating, so as to improve the production efficiency of preheating furnace and product quality.

In certain embodiments, in the circumferential direction of the rotary shaft, the tangent line of the active section and the stirring part Between angle be 60-90 degree.Such structure enables to stirring part preferably to play a part of plough and turns over material.

In certain embodiments, the turn-down rig is multiple that multiple turn-down rigs are around the center of the body of heater Axis, which is spaced apart, to be set.Thus, in motion process there are multiple stirring positions in material, i.e., have passed through during material movement more Secondary stirring, the degree of being heated evenly of material so can be further improved, reach the production efficiency and product quality for improving preheating furnace Purpose.

Specifically, multiple heating radiation pipes are provided between every two neighboring turn-down rig.Such design can be protected Exhibit material is immediately heated after a stirring part stirs, and so can further be improved the degree of being heated evenly of material, be reached and carry The production efficiency of high preheating furnace and the purpose of product quality.

In certain embodiments, the stirring part is often arranged along the rotation along the axially arranged into multiple rows of of the rotary shaft The circumference of axle includes multiple stirring parts spaced apart.Set multiple rows of multiple stirring parts can more equably turning over materials, It is beneficial to heater uniformly to heat material.

Specifically, multiple stirring parts of adjacent two row are staggered.Such design enables stirring part preferable Realize that the loose of material stirs in ground so that material turning it is more thorough, be beneficial to realize that heater carries out uniformly material Heat on ground.

Preferably, multiple stirring part stagger angles of adjacent two row are 30 degree.

In certain embodiments, it is connected with sealing mechanism for shaft end between the rotary shaft and the body of heater.Shaft end seal fills Putting can ensure because pernicious gas caused by the chemical/physical reaction of material is not diffused into outside body of heater.

In certain embodiments, the minimum range of the stirring part and the siege is 10-15mm.Stirring part and siege it Between 10-15mm gaps, can avoid stirring part scratched during stirring siege cause stirring part wear.

In certain embodiments, the stirring part is bolted in the rotary shaft.It is thus, it is possible to easily complete Into the installation and removal of stirring part, you can to facilitate stirring part to change.

In some optional embodiments, the preheating furnace also includes axle elevating mechanism, the axle elevating mechanism descending mechanism It is connected with the rotary shaft to drive the rotary shaft to rise or decline.Material bed thickness regulation stirring dress can be so directed to The height put, to strengthen stirring effect.

Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description In become obvious, or by it is of the present utility model practice recognize.

Brief description of the drawings

Of the present utility model above-mentioned and/or additional aspect and advantage will in the description from combination accompanying drawings below to embodiment Become obvious and be readily appreciated that, wherein：

Fig. 1 is the partial structural diagram according to the preheating furnace of the utility model embodiment.

Fig. 2 is Fig. 1 close-up schematic view.

Fig. 3 is the local structural graph according to the preheating furnace of the utility model embodiment.

Fig. 4 is the sectional view according to the turn-down rig of the preheating furnace of the utility model embodiment.

Fig. 5 is another sectional view according to the turn-down rig of the preheating furnace of the utility model embodiment.

Fig. 6 is the front view according to the stirring part of the utility model embodiment.

Fig. 7 is the left view according to the stirring part of the utility model embodiment.

Fig. 8 is the stereogram according to the stirring part of the utility model embodiment.

Fig. 9 is the partial top view according to the preheating furnace of the utility model embodiment.

Reference：Preheating furnace 300, body of heater 1, furnace chamber 11, water seal arrangement 12, siege 2, heating radiation pipe 3, turn-down rig 4th, stirring part 41, linkage section 411, active section 412, rotary shaft 42, shaft end seal 421, fixing seal end cap 421a, be slidingly sealed End cap 421b, outer end cap 421c, inner end cap 421d, sealing material 421e, drive mechanism 43, screw lifting mechanism 44.

Embodiment

Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Below by ginseng The embodiment for examining accompanying drawing description is exemplary, is only used for explaining the utility model, and it is not intended that to of the present utility model Limitation.

Preheating furnace 300 below with reference to Fig. 1-Fig. 9 descriptions according to the utility model embodiment.

As shown in Fig. 1, Fig. 4, Fig. 5 and Fig. 9, the body of heater of annular is included according to the preheating furnace 300 of the utility model embodiment 1st, siege 2, heating radiation pipe 3 and turn-down rig 4.Wherein, furnace chamber 11 is limited in body of heater 1, siege 2 is located in furnace chamber 11, stove Bed 2 horizontally rotates around the central axis of body of heater 1, and heating radiation pipe 3 is located on body of heater 1 and is radiated at the top of siege 2.Stirring Device 4 includes rotary shaft 42 and the stirring part 41 for digging material on siege 2, and stirring part 41 includes linkage section 411 and work Section 412, linkage section 411 is connected in rotary shaft 42, and active section 412 is directed away from turning in the rotation direction towards rotary shaft 42 The direction extension of moving axis 42.

It is understood that in the operation process of preheating furnace 300, siege 2 can drive material in the rotation of preheating furnace 300 Heart line moves, and the rotation centerline of preheating furnace 300 is vertically arranged, and siege 2 moves in the horizontal plane.In the moving process of siege 2, position Stirring part 41 above siege 2 can dig the material of lower section, material loosening be stirred so that heating radiation pipe 3 can Uniformly material of the paving cloth on siege 2 is heated, material is heated evenly, and the chemical reaction of material also can fully enter OK, the quality of product is improved, and improves the production efficiency and product quality of preheating furnace 300.In addition, stirring part 41 is only Special structure can preferably play a part of plough and turn over material.

According to the preheating furnace 300 of the utility model embodiment, by setting stirring part 41 on the top of siege 2, transported in material In dynamic process, ploughed to turn over when material passes through stirring part 41 and broken up.Bottom is dug, and upper strata falls, and is favorably further heated anti- Should, uniform heating of the heating radiation pipe 3 to material is realized, so as to improve the production efficiency of preheating furnace 300 and product quality.

In certain embodiments, as shown in Figure 5-Figure 8, in the circumferential direction of rotary shaft 42, active section 412 and stirring part Angle between 41 tangent line is 60-90 degree.It is understood that the tangential direction of stirring part 41 refers to, stirring part 41 is with turning Direction guided by the tangent line for the circular trace that moving axis 42 is formed when rotating..Here it is also understood that when stirring part 41 with When rotary shaft 42 turns to bottom, material, rear end rear insert material are first inserted in the front end of active section 412, before and after active section 412 Inclination angle is 60-90 degree, i.e. the front end of active section 412 is low, rear end is high so that active section 412 forms one diving downwards forward Sharp knife.Such design ensure that stirring part 41 is to insert material bed, the stirring resistance of reduction stirring part 41 obliquely all the time, from And improve the stirring effect of stirring part 41.

Specifically, as shown in figure 8, the front end of active section 412 is relatively thin, rear end is thicker, be advantageous to further reduce stirring resistance Power.

More specifically, as Figure 6-Figure 8, the bearing of trend of active section 412 presss from both sides with linkage section 411 in 90 degree on stirring part 41 Angle.

In certain embodiments, as shown in figure 9, the top of siege 2 can set multiple turn-down rigs 4, and multiple stirrings fill Put 4 central axis for surrounding body of heater 1 and be spaced apart setting.

Multiple stirring parts 41 are set it should be noted that being spaced apart around the center of body of heater 1 so that material is in moving process In multiple stirring positions be present, i.e., multiple stirring is have passed through during material movement, so can further improve material by The hot uniformity, reach the purpose of the production efficiency and product quality that improve preheating furnace 300.

Specifically, as shown in figure 9, being provided with multiple heating radiation pipes 3 between per two neighboring turn-down rig 4.It is appreciated that , material is after feed opening spreads cloth to rotary hearth 2, and by several radiant tube heating responses, upper materials reaction is completed, Turn over and break up through the plough of turn-down rig 4, upper materials and lower floor's material rearrangement, then by several radiant tube heating responses, according to Technique and layer thickness are so repeatedly.Treat that material is all heated evenly, reaction is completed most to discharge body of heater 1 through drawing mechanism afterwards.Cause It is designed to further improve the degree of being heated evenly of material as this, reaches the production efficiency and product for improving preheating furnace 300 The purpose of quality.

In certain embodiments, as shown in fig. 4-5, stirring part 41 is often arranged along the axially arranged into multiple rows of of rotary shaft 42 Include multiple stirring parts 41 spaced apart along the circumference of rotary shaft 42.Multiple rows of multiple stirring parts 41 are set more can equably to turn over Animal material, it is beneficial to heater and material is uniformly heated.

Specifically, multiple stirring parts 41 of adjacent two row are staggered, and stagger angle is 30 degree.Such design to turn over Materials and parts 41 can preferably realize that the loose of material stirs so that material turning it is more thorough, be beneficial to realize heater Material is uniformly heated up.

Specifically, as shown in figure 1, turn-down rig 4 also includes drive mechanism 43, drive mechanism 43 be connected with rotary shaft 42 with Driving rotary shaft 42 rotates.It is understood that drive mechanism 43 drives rotary shaft 42 to rotate, such design, which can increase, to be turned over The stirring effect of materials and parts 41, further increase the heated uniformity coefficient of material, so as to improve production efficiency.And work as drive mechanism When 43 power source is variable frequency reducer motor, according to the movement velocity of material on siege 2, the operation frequency of regulation motor can be passed through Rate reaches the purpose of the rotary speed of regulation stirring part 41, so as to further improve product quality.

Specifically, as shown in figure 1, drive mechanism 43 is located at the outside of body of heater 1, it is connected between rotary shaft 42 and body of heater 1 Shaft end seal 421.Shaft end seal 421 can ensure because pernicious gas caused by the chemical/physical reaction of material will not spread To outside body of heater 1.

Specifically, stirring part 41 is bolted in rotary shaft 42.Thus, it is possible to it is readily achieved stirring part 41 Installation and removal, you can easily to carry out the maintenance and replacing of stirring part 41.

Specifically, the cooling duct for flowing cooling agent is limited in rotary shaft 42, cooling duct is in rotary shaft 42 Rotary shaft 42 is penetrated on axial direction, the both ends of rotary shaft 42 are connected to swivel joint.It is understood that filled in stirring During putting 4 work, cooling agent is ceaselessly flowed in the cooling duct of rotary shaft 42, and rotary shaft 42 and stirring part 41 are risen To the effect of cooling protection.

In some optional embodiments, the minimum range of stirring part 41 and siege 2 is 10-15mm.Stirring part 41 and stove 10-15mm gaps between bed 2, can avoid stirring part 41 from scratching siege 2 during stirring, cause the mill of stirring part 41 Damage.

The preheating furnace 300 of the utility model one embodiment is described below with reference to Fig. 1-Fig. 9.

As shown in Fig. 1 and Fig. 9, the preheating furnace 300 in the present embodiment includes the body of heater 1, siege 2, heating radiation pipe 3 of annular With turn-down rig 4.Wherein, furnace chamber 11 is limited in body of heater 1, and the outer shroud of furnace chamber 11 has water seal arrangement 12；Siege 2 is located at furnace chamber 11 Interior, siege 2 horizontally rotates around the central axis of body of heater 1；Heating radiation pipe 3 is located on body of heater 1 and is radiated at the upper of siege 2 Side；Turn-down rig 4 includes being used for the stirring part 41 for digging material on siege 2, and stirring part 41 is located in furnace chamber 11 and is located at siege 2 Top.

As shown in figure 9, in this example, in the region of a quarter of siege 2, top is provided with two turn-down rigs 4, and Two turn-down rigs 4 are spaced apart around the central axis of body of heater 1 and set.Meanwhile 4 are provided between two neighboring turn-down rig 4 Heating radiation pipe 3.

As shown in Figure 1, Figure 3, turn-down rig 4 includes rotary shaft 42 and drive mechanism 43.Wherein, rotary shaft 42 is located at body of heater On 1, stirring part 41 is bolted in rotary shaft 42, and the minimum range of stirring part 41 and siege 2 is 10-15mm；Drive Motivation structure 43 is connected with rotary shaft 42 to drive rotary shaft 42 to rotate.Drive mechanism 43 is located at the outside of body of heater 1, rotary shaft 42 with Shaft end seal 421 is connected between body of heater 1.The both sides of rotary shaft 42 are connected to screw lifting mechanism 44, utilize screw lifting mechanism 44 can adjust the distance between stirring part 41 and siege 2.

As shown in Fig. 2 shaft end seal 421 includes：Fixing seal end cap 421a, it is slidingly sealed end cap 421b, inner end cap 421d and outer end cap 421c.

Wherein, fixing seal end cap 421a is welded to connect on body of heater 1, is slidingly sealed end cap 421b and outer end cap 421c is equal It is enclosed in rotary shaft 42, is slidingly sealed in the gap between end cap 421b and outer end cap 421c filled with sealing material 421e outside, it is close Envelope material 421e can be graphite packing etc., be slidingly sealed between end cap 421b and outer end cap 421c and be bolted.

It is enclosed on and is slidingly sealed on end cap 421b outside inner end cap 421d, solderable are connected to of inner end cap 421d is slidingly sealed end cap On 421b.It is be arranged in parallel between inner end cap 421d and fixing seal end cap 421a, inner end cap 421d and fixing seal end cap 421a It can be bolted.

Wherein, vertical elongated hole can be set on inner end cap 421d, bolt can slide vertically in the case of release along elongated hole, i.e., Inner end cap 421d can be relatively fixed end cover 421a and move up and down, so as to drive rotary shaft 42 vertically movable.When bolt is tightened When, inner end cap 421d is fixed on fixing seal end cap 421a, is fixed so as to the height of rotary shaft 42.

It should be noted that when can adjust the distance between stirring part 41 and siege 2 using screw lifting mechanism 44, need The bolt being connected between fixing seal end cap 421a and inner end cap 421d is first unclamped, is then entering row distance regulation, regulation After the completion of tighten the bolt being connected between fixing seal end cap 421a and inner end cap 421d again.

The cooling duct (not shown) for flowing cooling agent is limited in rotary shaft 42, cooling duct is in rotary shaft 42 Axial direction on penetrate rotary shaft 42, the both ends of rotary shaft 42 are connected to swivel joint, the swivel joint difference at both ends For connecting disengaging current.

As Figure 6-Figure 8, stirring part 41 includes linkage section 411 and active section 412, and linkage section 411 is connected to rotary shaft On 42, on the axial direction of rotary shaft 42, active section 412 is in the rotation direction towards rotary shaft 42, the direction of active section 412 Direction away from rotary shaft 42 extends.And in the circumferential direction of rotary shaft 42, between the tangent line of active section 412 and stirring part 41 Angle be 60-90 degree.

As shown in fig. 4-5, stirring part 41 is arranged along the axis direction of rotary shaft 42 in multiple row, and two adjacent row stirring parts 41 stagger 30 degree of settings.There are six stirring parts 41 on each row, and be evenly distributed on the periphery of rotary shaft 42.This Outside, stirring part 41 is made using heat-resisting steel sheet and plate.

The present embodiment uses the stirring part 41 with drive device, and the bottoms material of siege 2 is dug and broken up by stirring part 41, makes thing Material is heated relatively uniform, and production technology is wide, and productivity effect is high, and good product quality, maximum production capacity is up to 500,000 tons/year.Stirring Device 4 can be set in the different stove section multiple spots of siege 2, can according to layer thickness, the speed of service of siege 2, adjust stirring speed, To adapt to manufacturing technique requirent.Siege 2 can flexibly increase heater after provided with active turn-down rig 4 in any stove section, add Heat energy power is strong.Suitable for petrochemical processing applications.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the present utility model.In this manual, to the schematic table of above-mentioned term State and be not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the feature of description can be Combined in an appropriate manner in any one or more embodiments or example.

While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that： These embodiments can be carried out with a variety of changes, modification in the case where not departing from principle and objective of the present utility model, replaced And modification, the scope of the utility model are limited by claim and its equivalent.

Claims (10)

1. A kind of 1. preheating furnace, it is characterised in that including：

   The body of heater of annular, furnace chamber is limited in the body of heater；

   Siege, the siege are located in the furnace chamber, and the siege horizontally rotates around the central axis of the body of heater；

   Heating radiation pipe, the heating radiation pipe are located on the body of heater and are radiated at the top of the siege；

   Turn-down rig, the turn-down rig include：Rotary shaft and the stirring part for digging material on the siege, the rotation Axle is located on the body of heater, and the stirring part includes linkage section and active section, and the linkage section is connected in the rotary shaft, The active section is directed away from the direction extension of the rotary shaft in the rotation direction of the rotary shaft.
2. 2. preheating furnace according to claim 1, it is characterised in that in the circumferential direction of the rotary shaft, the work Angle between section and the tangent line of the stirring part is 60-90 degree.
3. 3. preheating furnace according to claim 1, it is characterised in that the turn-down rig is multiple, multiple stirring dresses The central axis put around the body of heater, which is spaced apart, to be set.
4. 4. preheating furnace according to claim 3, it is characterised in that be provided between per two neighboring turn-down rig multiple described Heating radiation pipe.
5. 5. preheating furnace according to claim 1, it is characterised in that the stirring part along the rotary shaft it is axially arranged into Multiple rows of, often arranging along the circumference of the rotary shaft includes multiple stirring parts spaced apart.
6. 6. preheating furnace according to claim 5, it is characterised in that multiple stirring parts of adjacent two row are staggered.
7. 7. preheating furnace according to claim 1, it is characterised in that be connected with shaft end between the rotary shaft and the body of heater Sealing mechanism.
8. 8. preheating furnace according to claim 1, it is characterised in that the minimum range of the stirring part and the siege is 10-15mm。
9. 9. preheating furnace according to claim 1, it is characterised in that the stirring part is bolted in the rotary shaft On.
10. 10. preheating furnace according to claim 1, it is characterised in that also include：Axle elevating mechanism, the axle elevating mechanism It is connected with the rotary shaft to drive the rotary shaft to rise or decline.