CN206705696U - A kind of furnace of calcium carbide - Google Patents
A kind of furnace of calcium carbide Download PDFInfo
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- CN206705696U CN206705696U CN201720341346.7U CN201720341346U CN206705696U CN 206705696 U CN206705696 U CN 206705696U CN 201720341346 U CN201720341346 U CN 201720341346U CN 206705696 U CN206705696 U CN 206705696U
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- calcium carbide
- furnace
- heater
- offgas outlet
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Abstract
The utility model discloses a kind of furnace of calcium carbide, including body of heater, electrode, feed pipe, offgas outlet and oxygen-containing gas import；Electrode and feed pipe are embedded in the top of body of heater, extend into body of heater cavity；Body of heater cavity is from top to bottom divided into bed of material area, thermosphere area and reaction zone, and when furnace of calcium carbide works, the temperature in thermosphere area is 1400~1600 DEG C；Offgas outlet is arranged in the side wall in body of heater thermosphere area；Oxygen-containing gas import is arranged in the side wall of body of heater, positioned at the lower section of offgas outlet.Furnace of calcium carbide of the present utility model, by setting offgas outlet in thermosphere area, it ensure that with CO oxidation reaction does not occur for the magnesium vapor in tail gas；Carbon in the lower section of offgas outlet setting oxygen-containing gas import, combustion parts raw material, reduce the energy consumption of calcium carbide production.
Description
Technical field
The utility model belongs to calcium carbide production equipment technology, more particularly to a kind of efficient furnace of calcium carbide.
Background technology
Calcium carbide is important industrial chemicals, and its main component is calcium carbide.In recent years, with the continuous hair of economic society
Exhibition, it is industrially increasing to the demand of calcium carbide.
At present, industrially the method for production calcium carbide is mainly electrothermal way.Its elder generation meet calcium carbide production requirement lime and
Coke carries out dispensing according to the specified ratio, and furnace charge then is delivered into furnace of calcium carbide furnace top bin with bucket elevator, through charge tube to
Electric furnace charge, furnace charge are come out of the stove in electric furnace by the resistance thermal response of electrode arc pad and furnace charge generation calcium carbide, calcium carbide timing,
Put to calcium carbide pot, after cooling, be broken into the granularity of certain specification requirement, that is, obtain finished product calcium carbide.
In the production process of calcium carbide, the impurity in raw material is serious to Influence of production.Impurity in raw material mainly includes oxygen
Change magnesium, silica, iron oxide, aluminum oxide etc., while furnace charge generates calcium carbide in electric reaction in furnace, various impurity are also carried out
Reaction.
The reaction of various impurity not only consumes electric energy and carbon materials, and influences operation, destroys furnace bottom, particularly magnesia and exists
Melting zone is reduced into rapidly magnesium metal, and melting zone is turned into a strong high temperature reduction area, and magnesium vapor is red-hot from this
When region largely escapes, a portion magnesium reacts immediately with carbon monoxide, and generation magnesia releases heat-flash and forms high temperature, office
Portion's duricrust is destroyed, and the liquid calcium carbide with impurity is corroded furnace bottom.When magnesium reacts with oxygen, substantial amounts of heat is released, makes charge level
Caking hinders furnace gas discharge, and produces branch current.Local furnace shell is also destroyed, or even is destroyed molten Candle-stub, blocks calcium carbide stream
Outlet.It was verified that content of magnesia often increases by 1% in lime, then power gas forming amount will decline 10~15L/kWh.Also
Partial oxidation magnesium reacts in melting zone and nitrogen, the magnesium nitride (Mg of generation3N2), make calcium carbide tacky, cause difficulty of coming out of the stove, influence just
Often production.
Utility model content
In order to solve the above problems, the utility model proposes one kind can remove magnesia in calcium carbide production process, again may be used
The furnace of calcium carbide of combustion parts carbon, magnesium metal is avoided in furnace of calcium carbide internal oxidition heat release, the production efficiency of calcium carbide is improved, saves into
This.
The utility model provides a kind of furnace of calcium carbide, including it is internal for the body of heater of cavity, electrode, feed pipe, offgas outlet and
Oxygen-containing gas import；
The electrode and feed pipe are embedded in the top of the body of heater, extend into body of heater cavity；
The body of heater cavity is from top to bottom divided into bed of material area, thermosphere area and reaction zone, when the furnace of calcium carbide works, institute
The temperature for stating thermosphere area is 1400~1600 DEG C；
The offgas outlet is arranged in the side wall in the body of heater thermosphere area；
The oxygen-containing gas import is arranged in the side wall of the body of heater, positioned at the lower section of the offgas outlet.
Calcium carbide needs high temperature in process of production, and the magnesia in impurity is reduced, and generates the tail gas containing magnesium vapor.Stove
Internal temperature gradually reduces from down to up, according to work when, the difference of body of heater sky cavity temperature, by cavity area up under according to
It is secondary to be divided into bed of material area, thermosphere area and reaction zone.Wherein, the temperature in thermosphere area is 1400~1600 DEG C.At 1400~1600 DEG C
Temperature range, it is ensured that magnesium vapor does not react with CO.Offgas outlet is arranged on thermosphere area so that magnesium vapor not with CO
React, just discharge body of heater, avoid the generation of oxidation reaction.
Oxygen-containing gas import is set in the side wall of body of heater, oxygen can be passed through into stove so that the carbon part in raw material
Imperfect combustion, it is possible to increase material temperature, reduce calcium carbide production power consumption.
As the preferable scheme of the utility model, the bottom of the body of heater cavity is equipped with bed course made of refractory material.
In the utility model, the furnace of calcium carbide further comprises flue and dust-removal cloth-bag, and the flue includes inlet exhaust gas
And flue outlet, the dust-removal cloth-bag include magnesia entrance, the offgas outlet connects the inlet exhaust gas of the flue, described
Flue outlet connects the magnesia entrance of the dust-removal cloth-bag.Flue can cool down to the tail gas containing magnesium vapor, make magnesium and tail
CO in gas reacts, and generates magnesia.Tail gas containing magnesia enters dust-removal cloth-bag, adsorbable collection magnesia.
Further, the top of the body of heater is provided with water cooling plant.Water cooling plant can cool down to the equipment of furnace roof, carry
The security of high furnace of calcium carbide.It is arranged on from traditional offgas outlet different on furnace roof, offgas outlet of the present utility model is arranged on
In the side wall in the body of heater thermosphere area, it also avoid crystallizing under water cooling plant effect of the magnesium vapor at the top of body of heater.
Specifically, on furnace roof, the both sides of the electrode are arranged symmetrically feed pipe.Further, the feed pipe is
High-temperature insulation material.
Furnace of calcium carbide provided by the utility model, using the characteristic of magnesium vapor, offgas outlet is arranged on to the thermosphere of furnace of calcium carbide
Area so that magnesium vapor will not react with CO in stove, avoid the generation of charge level caking and the material that collapses；Under offgas outlet
Side sets oxygen-containing gas import so that the carbon-based imperfect combustion in raw material, it is possible to increase material temperature, reduces calcium carbide production electricity
Consumption；Using dust-removal cloth-bag adsorption and oxidation magnesium, high value added product can be obtained.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment furnace of calcium carbide.
In figure：
1- bodies of heater, 2- electrodes, 3- feed pipes, 4- offgas outlets, 5- oxygen-containing gas imports, 6- bed courses, 101- bed of materials area,
102- thermospheres area, 103- reaction zones.
Embodiment
Below in conjunction with drawings and examples, specific embodiment of the present utility model is described in more details, with
Just the advantages of better understood when scheme and its various aspects of the present utility model.However, specific implementations described below side
Formula and embodiment are for illustrative purposes only, rather than to limitation of the present utility model.
As shown in figure 1, the utility model embodiment provides a kind of furnace of calcium carbide, including body of heater 1, electrode 2, feed pipe 3, tail gas
Outlet 4, oxygen-containing gas import 5 and bed course 6.The furnace of calcium carbide, the tail gas containing magnesium vapor is discharged into calcium carbide using offgas outlet 4
Stove, avoid the oxidation reaction of magnesia and CO in body of heater.Oxygen is passed through into stove using oxygen-containing gas import 5 so that former
The carbon-based imperfect combustion in part in material, heat is provided for the production of calcium carbide.
When producing calcium carbide, the empty cavity temperature of body of heater 1 gradually reduces from bottom to top.According to temperature during work, by cavity
Bed of material area 101, thermosphere area 102 and reaction zone 103 are from top to bottom divided into, the temperature in thermosphere area 102 is 1400~1600 DEG C.
In 1400~1600 DEG C of temperature range, it is ensured that with CO oxidation reaction does not occur for the magnesium vapor in tail gas.
Electrode 2 is embedded in the top of body of heater 1, extends into the cavity of body of heater, and do not contacted with furnace bottom.Electrode 2 can be three-phase
Electrode, heat is provided for the production of calcium carbide.
Feed pipe 3 is embedded in the top of body of heater 1, extends into the cavity of body of heater.Feed pipe 3 is high-temperature insulation material, can be protected
Demonstrate,prove the safety of furnace of calcium carbide.Feed pipe 3 is arranged symmetrically on the both sides of electrode 2, may be such that into furnace of calcium carbide material uniformly by
Heat, be advantageous to improve production efficiency, save the energy.
Offgas outlet 4 is arranged in the side wall in body of heater thermosphere area 102, is easy to the discharge of the tail gas containing magnesium vapor.Thermosphere area
102 be the region of 1400~1600 DEG C of temperature, and offgas outlet 4 is arranged on thermosphere area 102 so that magnesium vapor in tail gas not with CO
Generation oxidation reaction, avoid releasing big calorimetric because of magnesium vapor and CO reactions, avoid charge level caking and hinder furnace gas to discharge, together
When can avoid collapsing the dangerous situations such as material.
Oxygen-containing gas import 5 is arranged in the side wall of body of heater 1, positioned at the lower section of offgas outlet 4.Pass through oxygen-containing gas import
5 are passed through part oxygen-containing gas so that the carbon-based imperfect combustion in raw material, it is possible to increase material temperature, reduce calcium carbide production electricity
Consumption.Oxygen-containing gas import 5 is arranged on the lower section of offgas outlet 4, is advantageous to the rising of hot gas, is easy to the collection of tail gas.
In embodiment of the present utility model, the bottom of body of heater cavity is equipped with bed course 6 made of refractory material.
In order to obtain the product magnesia of high added value, the furnace of calcium carbide of the utility model embodiment also includes flue and dedusting
Cloth bag.Flue includes inlet exhaust gas and flue outlet, and offgas outlet connects the inlet exhaust gas of the flue.Arranged by offgas outlet
The tail gas containing magnesium vapor for going out body of heater enters flue, rapid drop in temperature, when the exhaust temperature containing magnesium vapor is down to 1200
When below DEG C, react：Mg+CO=MgO+C, generate magnesia.
Dust-removal cloth-bag includes magnesia entrance, and flue outlet connects the magnesia entrance of dust-removal cloth-bag.Caused by flue
Magnesia together enters dust-removal cloth-bag with other tail gas, and dust-removal cloth-bag has adsorption function, adsorbable collection magnesia, and discharge remains
Remaining gas.The furnace of calcium carbide of the utility model embodiment, it not only avoid and aoxidize what magnesium addition produced to calcium carbide in carbide raw material
Influence, and collect the magnesia of high added value, obtain bigger economic benefit.
Specifically, the top of body of heater is provided with water cooling plant.Water cooling plant is used to cool down the equipment of furnace roof, ensures electricity
The trouble free service of stone stove, such as cool down the sealing of electrode.
Embodiment 1
1st, spherical material is sent into furnace of calcium carbide by feed pipe, the component of spherical material is semicoke and lime.
2nd, oxygen is passed through into stove by oxygen-containing gas import.
3rd, spherical material is heated to 2000 DEG C or so, the CO in carbon and gas in spherical material by magnesia therein also
Original, generate calcium carbide and the tail gas containing magnesium vapor；With oxygen imperfect combustion occurs for the part carbon in spherical material, is produced for calcium carbide
Portion of energy is provided.
4th, the tail gas containing magnesium vapor rises, and temperature gradually reduces, in 1400~1600 DEG C of thermosphere area, by offgas outlet
Discharge furnace of calcium carbide.
5th, the tail gas containing magnesium vapor enters flue, when less than 1200 DEG C are down in flue, magnesium vapor by offgas outlet
Magnesia is oxidized to again.
6th, the tail gas containing magnesia enters dust-removal cloth-bag, and recovery contains magnesium dust, and the grade of magnesium can reach 50.2%.
Embodiment 2
1st, spherical material is sent into furnace of calcium carbide by feed pipe, the component of spherical material is biomass and lime.
2nd, oxygen is passed through into stove by oxygen-containing gas import.
3rd, spherical material is heated to 2100 DEG C or so, the CO in carbon and gas in spherical material by magnesia therein also
Original, generate calcium carbide and the tail gas containing magnesium vapor；With oxygen imperfect combustion occurs for the part carbon in spherical material, is produced for calcium carbide
Portion of energy is provided.
4th, the tail gas containing magnesium vapor rises, and temperature gradually reduces, in 1400~1600 DEG C of thermosphere area, by offgas outlet
Discharge furnace of calcium carbide.
5th, the tail gas containing magnesium vapor enters flue, when less than 1200 DEG C are down in flue, magnesium vapor by offgas outlet
Magnesia is oxidized to again.
6th, the tail gas containing magnesia enters dust-removal cloth-bag, and recovery contains magnesium dust, and the grade of magnesium reaches 49%.
It should be noted that each embodiment above by reference to described by accompanying drawing is only illustrating the utility model rather than limit
The scope of the utility model processed, it will be understood by those within the art that, do not departing from spirit of the present utility model and model
The modification carried out on the premise of enclosing to the utility model or equivalent substitution, all should cover within the scope of the utility model.
In addition, signified outer unless the context, the word occurred in the singular includes plural form, and vice versa.In addition, except non-specifically
Explanation, then all or part of of any embodiment can combine all or part of of any other embodiment and use.
Claims (6)
1. a kind of furnace of calcium carbide, including the internal body of heater for cavity, it is characterised in that further comprise that electrode, feed pipe, tail gas go out
Mouth and oxygen-containing gas import；
The electrode and feed pipe are embedded in the top of the body of heater, extend into body of heater cavity；
The body of heater cavity is from top to bottom divided into bed of material area, thermosphere area and reaction zone, when the furnace of calcium carbide works, the heat
The temperature in floor area is 1400~1600 DEG C；
The offgas outlet is arranged in the side wall in the body of heater thermosphere area；
The oxygen-containing gas import is arranged in the side wall of the body of heater, positioned at the lower section of the offgas outlet.
2. furnace of calcium carbide according to claim 1, it is characterised in that the bottom of the body of heater cavity is equipped with refractory material system
Into bed course.
3. furnace of calcium carbide according to claim 1, it is characterised in that further comprise flue and dust-removal cloth-bag, the flue
Including inlet exhaust gas and flue outlet, the dust-removal cloth-bag includes magnesia entrance, and the offgas outlet connects the flue
Inlet exhaust gas, the flue outlet connect the magnesia entrance of the dust-removal cloth-bag.
4. furnace of calcium carbide according to claim 1, it is characterised in that the top of the body of heater is provided with water cooling plant.
5. furnace of calcium carbide according to claim 1, it is characterised in that be arranged symmetrically feed pipe in the both sides of the electrode.
6. furnace of calcium carbide according to claim 1, it is characterised in that the feed pipe is high-temperature insulation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720341346.7U CN206705696U (en) | 2017-04-01 | 2017-04-01 | A kind of furnace of calcium carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720341346.7U CN206705696U (en) | 2017-04-01 | 2017-04-01 | A kind of furnace of calcium carbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206705696U true CN206705696U (en) | 2017-12-05 |
Family
ID=60468388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720341346.7U Expired - Fee Related CN206705696U (en) | 2017-04-01 | 2017-04-01 | A kind of furnace of calcium carbide |
Country Status (1)
| Country | Link |
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| CN (1) | CN206705696U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106966394A (en) * | 2017-04-01 | 2017-07-21 | 神雾环保技术股份有限公司 | A kind of furnace of calcium carbide |
| CN113739594A (en) * | 2021-09-22 | 2021-12-03 | 新疆宜化化工有限公司 | Automatic breaking process and device for preventing hardening of materials in calcium carbide furnace |
| CN114044514A (en) * | 2021-12-03 | 2022-02-15 | 汨罗市鑫祥碳素制品有限公司 | Tail end exhaust type graphite furnace |
| CN114057191A (en) * | 2021-12-03 | 2022-02-18 | 汨罗市鑫祥碳素制品有限公司 | Power constant device for vertical graphitizing furnace |
-
2017
- 2017-04-01 CN CN201720341346.7U patent/CN206705696U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106966394A (en) * | 2017-04-01 | 2017-07-21 | 神雾环保技术股份有限公司 | A kind of furnace of calcium carbide |
| CN113739594A (en) * | 2021-09-22 | 2021-12-03 | 新疆宜化化工有限公司 | Automatic breaking process and device for preventing hardening of materials in calcium carbide furnace |
| CN114044514A (en) * | 2021-12-03 | 2022-02-15 | 汨罗市鑫祥碳素制品有限公司 | Tail end exhaust type graphite furnace |
| CN114057191A (en) * | 2021-12-03 | 2022-02-18 | 汨罗市鑫祥碳素制品有限公司 | Power constant device for vertical graphitizing furnace |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171205 Termination date: 20190401 |
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| CF01 | Termination of patent right due to non-payment of annual fee |