CN206269598U - A kind of furnace cover of closed type calcium carbide furnace - Google Patents
A kind of furnace cover of closed type calcium carbide furnace Download PDFInfo
- Publication number
- CN206269598U CN206269598U CN201621143125.0U CN201621143125U CN206269598U CN 206269598 U CN206269598 U CN 206269598U CN 201621143125 U CN201621143125 U CN 201621143125U CN 206269598 U CN206269598 U CN 206269598U
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- bell
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- furnace
- calcium carbide
- center
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Abstract
The utility model discloses a kind of furnace cover of closed type calcium carbide furnace, the bell uses sectional type water cooled structure, including a center bell and multiple peripheries bell；Multiple periphery bells include 2 III section of bells of bell II section, 1 of bell I section, 3, II section of 3 bells and 2 bells, I section and 1 bell, III section of arranged for interval；Water-cooled suspension bracket is connected with the bell of center.Electrode hole is respectively equipped between center bell and 3 II section of bells, I section of bell is provided with maintenance door, and III section of bell is provided with chimney hole, and the edge that II section of bell is provided with detection door, and the edge of multiple periphery bells is equipped with inspection door.Thermal insulation layer is provided with the inside of water cooled cover, the centre of bell sets 3 water-cooled suspension brackets at center, bell is provided with 3 water-cooled suspension brackets with the connecting portion of periphery bell at center.The loss of bell heat is reduced, the utilization rate of electric energy is improved, the temperature of recirculated water is considerably reduced, bell service life is improved, effectively reduced because inner operating is severe, furnace gas washes away the destruction for causing to bell.Closed calcium carbide furnace maximization is adapted to, thermal loss is reduced, the service life of bell is improved, increases furnace of calcium carbide economic benefit.
Description
Technical field
The utility model is related to a kind of furnace of calcium carbide production equipment, more particularly to a kind of furnace cover of closed type calcium carbide furnace.
Background technology
Calcium carbide is the base stock of chemical industry, and mainly for the production of PVC (polyvinyl chloride), and China is calcium carbide production
First big country, improving the calcium carbide level of production has very big meaning.It is particularly hot with the technological progress of China's calcium carbide production technology
Dress formula closed calcium carbide furnace new technology, is badly in need of the supporting of matched production equipment and improves.
Hot charging formula closed calcium carbide furnace is a kind of new calcium carbide production equipment, by the raw material for adding temperature to be 500-800 DEG C,
To reduce power consumption, the effect of energy-conservation is reached, raw material Main Ingredients and Appearance used is coke and quick lime, and size is the height of 5-50mm
Warm pelletizing feed.In hot charging formula closed calcium carbide furnace production process, raw material first passes through conveying equipment transport to furnace top bin, then from stove
Liftout storehouse, is transported in stove by charge pipe, and calcium carbide (CaC2) is generated through pyroreaction in stove.When calcium carbide is produced, furnace of calcium carbide
Fire box temperature, according to following formula reaction generation calcium carbide CaO+3C → CaC2+CO, can produce substantial amounts of height at 2000 DEG C or so in the reaction
Warm carbon monoxide (CO), is the Main Ingredients and Appearance of furnace gas.In the process, the more conventional furnace of calcium carbide of burner hearth furnace gas temperature has larger carrying
Rise, more acutely, dust content is big, and furnace gas is more serious to washing away for bell for calcium carbide reaction.
Closed calcium carbide furnace is the Core equipment for producing calcium carbide, is a kind of burried arc furnace, as calcium carbide production scale increasingly increases
Greatly, furnace of calcium carbide separate unit yield and calcium carbide heat size are also increasing, and requirement higher is proposed to furnace of calcium carbide design.Bell is close
Furnace of calcium carbide principal character is closed, optimization bell design improves bell service life and stability in use, calcium carbide is produced, and improves stove
Gas utilization rate, improves production operation environment, with advanced meaning.Due in hot charging formula calcium carbide production technology, calcium carbide reaction in furnace
More acutely, the working of a furnace occurs that the more conventional furnace of calcium carbide of unsteady phenomena is more frequent, and calcium carbide production status are more severe, and bell is damaged and stopped
Economic loss caused by stove is very huge.
Current furnace cover of closed type calcium carbide furnace generally uses water-cooled welding structure, is that the outlet temperature requirements of recirculated cooling water are tight
Lattice, because temperature is high in burner hearth, often there is the problems such as leak, fouling, sinking in bad environments, bell, brings great to production
How potential safety hazard, optimize bell design, to adapt to the maximization of furnace of calcium carbide, meets hot-mounting process production requirement, reduces bell
Thermal loss, improves bell service life, eliminates safe hidden trouble, and is a major issue of furnace of calcium carbide design.
Prior art one, Chinese patent《Furnace cover of closed type calcium carbide furnace》, publication number 203364614U, bell therein is without warm
Safeguard measure, bell bottom steel plate is directly subject to electrode radiation and furnace gas corrosion to wash away, and the bell life-span is low.
Prior art two, Chinese patent《A kind of furnace cover of closed type calcium carbide furnace》, disclosure (bulletin) number 201184745, wherein, will
Segmented bell is changed to overall lid, and maximization, scale with closed calcium carbide furnace, bell diameter are increasing, overall stove
Lid is not easy to installation, maintenance；Water cooled cover is all changed to the bell that refractory concrete is poured, bell hull-skin temperature is higher,
There is potential safety hazard, bell is influenceed greatly by refractory quality, and service life is short.
Utility model content
The purpose of this utility model is to provide a kind of closed calcium carbide furnace that adapts to and maximizes, reduce thermal loss, improve bell
Service life it is close close calcium carbide furnace cover.
The purpose of this utility model is achieved through the following technical solutions：
Furnace cover of closed type calcium carbide furnace of the present utility model, the furnace cover of closed type calcium carbide furnace is water cooled cover, using sectional type water cooled
Structure, including a center bell and multiple peripheries bell, are provided with thermal insulation layer on the inside of water cooled cover；
The multiple periphery bell includes 2 III section of bells of bell II section, 1 of bell I section, 3,3 bells II
Section and 2 bells, I section and 1 bell, III section of arranged for interval, II section of each described bell are surrounded between the center bell
One electrode hole；
The multiple periphery bell is fixed on the center bell, is increased in the center bell and periphery bell junction
3 water-cooled suspension brackets are added.
The technical scheme provided by above-mentioned the utility model is as can be seen that the closed calcium carbide of the utility model embodiment offer
Stove bell, reduces the loss of bell heat, improves the utilization rate of electric energy, improves bell service life, and heatproof is high, erosion resistibility
By force, effectively reduce because inner operating is severe, furnace gas washes away the destruction for causing to bell.Closed calcium carbide furnace maximization is adapted to,
Thermal loss is reduced, the service life of bell is improved, increases furnace of calcium carbide economic benefit.
Brief description of the drawings
The structural representation of the furnace cover of closed type calcium carbide furnace that Fig. 1 is provided for the utility model embodiment.
Fig. 2 is the top view of Fig. 1.
Fig. 3 a are the typical structural representation of bell thermel protection device in the utility model embodiment.
Fig. 3 b are the A portions mplifying structure schematic diagram of Fig. 3 a.
Fig. 4 is the structural representation of I section of bell in the utility model embodiment.
Fig. 5 is the structural representation of II section of bell in the utility model embodiment.
Fig. 6 is the structural representation of III section of bell in the utility model embodiment.
Fig. 7 is the structural representation of the center bell in the utility model embodiment.
Mark in accompanying drawing for：
1- water cooled covers, 2- furnace of calcium carbide furnace shells, 3- water-cooled suspension brackets, I section of 4- bells, II section of 5- bells, III section of 6- bells, 7-
Center bell, 8- electrode holes, 9- thermal insulation layers, 10- anchoring hooks, 11- heat-insulating materials, 12- castable refractories, 13- maintenance doors,
14- inspection doors, 15- detection doors, 16- chimneys hole, 17- suspension centres one, 18- suspension centres two.
Specific embodiment
The utility model embodiment will be described in further detail below.
Furnace cover of closed type calcium carbide furnace of the present utility model, its preferably specific embodiment is：
The furnace cover of closed type calcium carbide furnace is water cooled cover, using sectional type water cooled structure, including a center bell and multiple
Periphery bell, is provided with thermal insulation layer on the inside of water cooled cover；
The multiple periphery bell includes 2 III section of bells of bell II section, 1 of bell I section, 3,3 bells II
Section and 2 bells, I section and 1 bell, III section of arranged for interval, II section of each described bell are surrounded between the center bell
One electrode hole；
The multiple periphery bell is fixed on the center bell, is increased in the center bell and periphery bell junction
3 water-cooled suspension brackets are added.
I section of the bell is provided with maintenance door, and III section of the bell is provided with chimney hole, and the edge that II section of the bell sets
The edge for having detection door, the multiple periphery bell is equipped with inspection door.
The thermal insulation layer includes anchoring hook, heat-insulating material, castable refractory.
3 water-cooled suspension brackets are also set up in the centre of the center bell.
Furnace cover of closed type calcium carbide furnace of the present utility model, reduces the loss of bell heat, improves the utilization rate of electric energy；Described
Bell considerably reduces the temperature of recirculated water, effectively prevents water route fouling in bell, improves bell service life；Described stove
Lid uses castable refractory near burner hearth position, and not only heatproof is high, and erosion resistibility is also strong, effectively reduces due to inner operating
Badly, furnace gas washes away the destruction for causing to bell.Closed calcium carbide furnace maximization is adapted to, thermal loss is reduced, making for bell is improved
With the life-span, increase furnace of calcium carbide economic benefit.
Specific embodiment：
As shown in Figure 1 and Figure 2, it is the structural representation of the utility model furnace cover of closed type calcium carbide furnace, the bell uses segmented
Water-cooling structure, its periphery bell and 1 center bell for being made up of for III section 62 bells of bell II section 5,1 of bell I section 4,3
7 main body frames for constituting water cooled cover 1, coordinate the maintenance door 13 on furnace of calcium carbide furnace shell 2, electrode system, chimney and bell, check
The equipment such as door 14, detection door 15 form confined space, reach the purpose of isolation air and insulation.Fig. 4 is stove of the present utility model
I section 4 of lid, is provided with maintenance door 13, inspection door 14 thereon.Fig. 5 is bell of the present utility model II section 5, and inspection is provided with thereon
Door 14, detection door 15.Fig. 6 is bell of the present utility model III section 6, and inspection door 14, chimney hole 16 are provided with thereon.Fig. 7 is this
The center bell 7 of utility model, is provided with 3 suspension centres 1 and 3 suspension centres 2 18, for installing water-cooled suspension bracket 3 thereon.
Thermal source is made in furnace of calcium carbide electricity consumption, and three-phase electrode nearby concentrate by heat, mainly radiant heat, electrode trigonum inner surface temperature
Up to 1450 DEG C, common refractory is difficult to what is born to degree, if the no refractory material in bell inner side does protective layer, adds shell side formula
The fouling of water cooled cover water route, localized hyperthermia, it is easy to bell is melted and snap leak.Calcium carbide furnace cover central temperature is high, week
Side temperature is low, and the swell increment that each part of bell is produced is different, is easily cracked in force part, influences the bell life-span.
Preferably scheme is to increase thermal insulation layer 9 in the inner side of water cooled cover 1, to completely cut off the heat radiation of bell steel plate and prevent steel plate
Be heated inequality, specific method is shown in Fig. 3 a, Fig. 3 b bell thermel protection device canonical schemas, thermal insulation layer 9 by anchoring hook 10, adiabatic protect
Adiabator 11, castable refractory 12 are constituted, and more excellent scheme is that heat-insulating material 11 uses light thermal-insulation castable.Anchoring hook
It is V-structure, is made of stainless steel plate, material is 1Cr18Ni9Ti, with high temperature resistant, non-magnetic feature, it is adaptable to electric arc
Stove.Light thermal-insulation castable heat-proof quality is good, and thermal shock resistance is good, it is easy to construct.Castable refractory intensity is good, rub resistance, refractoriness
Height, existing flame retardant coating has the structure of heat-insulation layer more reasonable again.If only castable refractory, high temperature in burner hearth, water-cooled stove
Lid low temperature, castable two ends temperature spread is big, and non-homogeneous expansion is easily split up peeling.
CO gas concentrations are very high in process of production for furnace of calcium carbide, therefore, calcium carbide furnace cover material must need to be contained with low iron
The material of amount.If Fe2O3Content is high, then the one piece one piece situation peeled off or even smashing damage occurs occurs.In addition
The castable density of selection is small, in order to mitigate bell load, and bell is hanging bell, and bell is lighter, what suspension centre bore
Pulling force is smaller, also allows for bell installation, maintenance.Even if castable drops, a large amount of dust would also adhere to bell bottom in stove,
It is also a kind of protection to bell.Bell install after, ceramic fiber blanket blind is used between all parts, play sealing, every
Heat, the effect of dilatation joint.
The physical and chemical index of light thermal-insulation castable and castable refractory is as follows：
Light thermal-insulation castable physical and chemical index
Castable refractory physical and chemical index
Bell using water-cooled plus the structure of thermal insulation layer 9 has good economic benefit, bell can be greatly reduced first and dissipate
Heat, reduction is approximately conventional without the bell of thermal insulation layer 9 radiating 70%.Circulating water outlet temperature is reduced, the generation of incrustation scale is reduced, reduced
Circulation water consumption.High insulating effect, then fire box temperature is high, is conducive to the reaction of calcium carbide, is conducive to the discharge of furnace gas, and then improve
Calcium carbide yield, and then power consumption is reduced, reach the purpose of energy-saving and emission-reduction.
Center bell 7 and bell II section of 5 composition, one electrode hole 8 in bell, for placing electrode assembly, can reduce
Installation difficulty, while increasing the intensity of bell and the sealing of bell.
Bell has 6 water-cooled suspension brackets 3.Suspension centre 1 on center bell 7 sets 3 water-cooled suspension brackets 3, while at center
Bell 7 increased 3 water-cooled suspension brackets 3 with the suspension centre 2 18 of periphery bell junction, improve hanging bearing capacity, prevent center
Bell sinks, and bell stress is evenly.
The beneficial effect that technical solutions of the utility model are brought：
Compared with prior art, had the advantage that using above-mentioned technical proposal：
1st, with recirculated water cooling structure while, bell thermal insulation layer 9 is increased, bell heat dissipation capacity can be reduced, increase makes
Use the life-span；The purpose for retaining circulating water structure is to increase the security of bell.
2nd, in bell center bell 7 and bell II section of 5 composition, one electrode hole 8, for placing electrode assembly, can drop
Low installation difficulty, while increasing the intensity of bell and the sealing of bell.
3rd, bell has 6 water-cooled suspension brackets 3.Suspension centre 1 on center bell 7 sets 3 water-cooled suspension brackets 3, while in
Heart bell 7 increased 3 water-cooled suspension brackets 3 with the suspension centre 2 18 of periphery bell junction, improve hanging bearing capacity, prevent center
Bell sinks, and bell stress is evenly.
The above, only the utility model preferably specific embodiment, but protection domain of the present utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model is disclosed
Change or replacement, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should
It is defined by the protection domain of claims.
Claims (4)
1. a kind of furnace cover of closed type calcium carbide furnace, it is characterised in that the furnace cover of closed type calcium carbide furnace is water cooled cover, using sectional type water cooled
Structure, including a center bell and multiple peripheries bell, are provided with thermal insulation layer on the inside of water cooled cover；
The multiple periphery bell includes 2 III section of bells of bell II section, 1 of bell I section, 3, II section of 3 bells and 2
Individual bell I section and 1 bell, III section of arranged for interval, II section of each described bell surrounds an electricity between the center bell
Pole hole；
The multiple periphery bell is fixed on the center bell, be increased with periphery bell junction in the center bell
3 water-cooled suspension brackets.
2. furnace cover of closed type calcium carbide furnace according to claim 1, it is characterised in that I section of the bell is provided with maintenance door, institute
State III section of bell and be provided with chimney hole, the edge that II section of the bell is provided with detection door, and the edge of the multiple periphery bell is equal
It is provided with inspection door.
3. furnace cover of closed type calcium carbide furnace according to claim 2, it is characterised in that the thermal insulation layer includes anchoring hook, thermal insulation
Insulation material, castable refractory.
4. the furnace cover of closed type calcium carbide furnace according to claim 1,2 or 3, it is characterised in that at the center of the center bell
Position also sets up 3 water-cooled suspension brackets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621143125.0U CN206269598U (en) | 2016-10-20 | 2016-10-20 | A kind of furnace cover of closed type calcium carbide furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621143125.0U CN206269598U (en) | 2016-10-20 | 2016-10-20 | A kind of furnace cover of closed type calcium carbide furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206269598U true CN206269598U (en) | 2017-06-20 |
Family
ID=59038312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621143125.0U Expired - Fee Related CN206269598U (en) | 2016-10-20 | 2016-10-20 | A kind of furnace cover of closed type calcium carbide furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206269598U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314688A (en) * | 2017-08-15 | 2017-11-03 | 董洪维 | A kind of mineral hot furnace open hearth lid |
| CN109883203A (en) * | 2019-03-28 | 2019-06-14 | 江苏德龙镍业有限公司 | Mineral hot furnace water cooled cover |
-
2016
- 2016-10-20 CN CN201621143125.0U patent/CN206269598U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314688A (en) * | 2017-08-15 | 2017-11-03 | 董洪维 | A kind of mineral hot furnace open hearth lid |
| CN109883203A (en) * | 2019-03-28 | 2019-06-14 | 江苏德龙镍业有限公司 | Mineral hot furnace water cooled cover |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170620 Termination date: 20181020 |