CN205023865U - Joint reactor of production carbide - Google Patents
Joint reactor of production carbide Download PDFInfo
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- CN205023865U CN205023865U CN201520718598.8U CN201520718598U CN205023865U CN 205023865 U CN205023865 U CN 205023865U CN 201520718598 U CN201520718598 U CN 201520718598U CN 205023865 U CN205023865 U CN 205023865U
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Abstract
The utility model provides a joint reactor of production carbide, reactor include stove and lower stove, the bottom of going up the stove is provided with feeding barrel, in this feeding barrel shen ru arrives down stove furnace, the top of going up the stove is provided with the multichannel spout and reacts in entering into the stove for raw materials coal and oxygen, the electrode is installed to the stove down, and the mounted position of this electrode guarantees that the electric arc district of three -phase electrode is tangent with the blanking district of last stove. Buggy and calcium oxide channel qi flow two sections reactions of bed reactor and electric arc reactor and generate carbide among the the device, and the pulverized coal firing heat in the air current bed reactor provides reacts required most heat, and the more prevailing electric arc furnace power consumption that has significantly reduced has reduced manufacturing cost. The electric arc reactor provides the high temperature of 2200 DEG C of left and right sides and stablizes the heat source, and the reaction of unreacted raw materials totally among messenger's air current bed reactor to to gained carbide product intensification quenching and tempering, so can make the product quality be higher than conventional oxygen hot method product, it is easy in the difficult problem of oxidative attack to have avoided in the oxygen hot method device high temperature section refractory material again, makes the investment of device reduce the life -time dilatation.
Description
[technical field]
The utility model relates to a kind of technique and the special purpose reactor thereof of preparing calcium carbide, is specifically related to a kind of combined reactor be made up of entrained-flow reactor and arc reactor.
[background technology]
Carbide of calcium (CaC
2) be commonly called as calcium carbide, be the industrial important basic material of organic synthesis, occupy an important position in chemical industry.Industrial calcium carbide is mainly used to produce acetylene, calcium cyanamide and desulfurizing agent for iron or steel etc., is wherein its topmost end product by the PVC of acetylene.China's calcium carbide production capacity occupies the first in the world for a long time, 2014 the end of the year China calcium carbide output reach 2,580 ten thousand tons, increase by 12.9% on a year-on-year basis.The industrial production of current calcium carbide all adopts electric heating process, and its ultimate principle is that Lumped carbonaceous raw material and block calcium oxide (granularity is strict controlled in 3 ~ 20mm) (furnace temperature is more than 2000 DEG C) thermo-negative reaction in high-temperature closed electric arc furnace generate the calcium carbide product of molten state.
Electric heating process is developed so far the history having had more than 100 year, technology have passed through repeatedly significant improvement therebetween, the utility model of such as hermetic type furnace of calcium carbide, the introducing of coreless armature technology and the widespread use etc. of automatic control technology, make whole electric heating process technological process reach its maturity.But the product ton power consumption of this technique is still at about 3500kWh at present, power cost is close to 50% of total cost, and electric arc oven process can only use block calcium oxide and coke raw material simultaneously, causes the waste of the powder raw material of accounting nearly 20%.Also there is complex structure, be difficult to the problems such as amplification in electric arc furnace in addition, and the construction input and the running cost that result in this technology are all very high.After oil price declines, the economy of calcium carbide process PVC route relative oil ethene PVC route will reduce greatly.But the resource of China's " few oil of rich coal " is possesed and the reality of coal and water resources contrary distribution, and make again oil and olefin hydrocarbon making by coal PVC route be difficult to substitute calcium carbide process PVC completely, therefore China has very strong demand to lifting calcium carbide process economy.
Solve the problem of existing calcium carbide industry " high cost, high energy consumption, high pollution ", just need to carry out technological innovation to existing electric heating process calcium carbide technique.Oxygen hot method calcium carbide technique is study hotspot both domestic and external always, wishes that the heat produced by coal burning replaces electric arc liberated heat supply calcium carbide building-up reactions.Just carried out as far back as six the seventies Germany and Korea the pilot plant test that the hot method of complete burnt shaft furnace oxygen produces calcium carbide, but because the reason such as speed of reaction is low and coke consumption is too large, its cost, also higher than arc process, stops production after crude oil price decline.The domestic research to oxygen hot method calcium carbide technology and device also more report.CN201210569784.0 and CN201220723905.8 discloses the method and apparatus that the hot method of a kind of powder raw material oxygen in air flow bed produces calcium carbide and synthetic gas, and calcium carbide reactor described in it is made up of the reaction chamber of the preheating chamber on top, the vaporizer at middle part and bottom.Its idiographic flow is sent into through coal-grinding and dry carbon raw material and calcic raw material by opening for feed, carbon raw material and the abundant preheating of calcic raw material in preheating chamber, enter the further heat temperature raising of heat by coal dust and oxygen-rich air mixed firing after vaporizer, last coal dust in the reaction chamber burns with oxygen mix the high temperature of generation about 2000 DEG C further, and the carbon raw material of remainder and calcium oxide are at high temperature reacted completely.From known document analysis, in oxygen hot method calcium carbide process exploitation, there is a lot of difficult point, comprise and how to provide temperature to reach the reliable and stable thermal source of 2000 DEG C and corresponding refractory materials, how to allow powdery carbon containing, the abundant contact reacts of calcic raw material etc.
Cannot utilize the shortcoming large with producing power consumption to solve traditional electric heating process powder raw material, and the hot method of avoidance oxygen needs the difficulty of seeking high temperature heat source and refractory materials, is necessary to provide a kind of technical scheme that can solve above technical problem in fact.
[utility model content]
For solving above technical problem, the utility model provides a kind of combined reactor and production method of producing calcium carbide, realize utilizing producing calcium carbide by using powder raw materials through by upper stove, the heat of reaction of the overwhelming majority is provided simultaneously, greatly reduces the feed rate of electric heating in electric arc furnace.Utilizing lower stove to be heated further by reaction mass makes material reaction complete, ensure that quality product.
Produce a combined reactor for calcium carbide, comprise stove and lower stove, the bottom of described upper stove is provided with blanking barrel, and material drops in blanking barrel from upper furnace roof portion and then enters in lower stove burner hearth, and becomes feeding zone at lower stove freeze profile; Described lower stove is provided with three-phase electrode, and the high-temperature zone that the electric arc that electrode produces is formed extends to the center, feeding zone formed when material falls.
Described upper stove furnace roof is provided with hyperchannel spout, and pulverulent material and oxygen are entered in upper stove burner hearth by this hyperchannel spout.
Described hyperchannel spout is multilayer sleeve structure, and pipe core is the feeding-passage of coal dust and powdery calcic raw material, and outermost layer is the water-cooled sleeve that cooling-water duct is formed, and the annular chamber between feeding-passage and water-cooled sleeve is combustion oxygen passage.
The bottom of described hyperchannel spout is provided with gas rotating blade, for mixing of enriched with oxygen and powder in center sleeve, makes burning more abundant.
The central axes of described upper stove and lower stove, is connected by the blanking barrel of upper stove; The burner hearth of described upper stove adopts hot wall form to reduce the thermal losses of coal dust firing, and its interior wall construction is followed successively by flame retardant coating and thermal insulation layer, and this flame retardant coating and thermal insulation layer are fixed in the upper stove outer covering of steel.
The upper and lower external diameter of described upper stove is all less than the external diameter of burner hearth medium position, and the little structure broad in the middle in two, described blanking barrel is arranged on the bottom of stove, and the bottom of blanking barrel is provided with flare, to expand the distribution area of liquid blanking.
Described lower stove is circular configuration, comprises bell and burner hearth, and the main body of described bell is the water-cooled water coolant girder steel intersected in length and breadth, is reserved with electrode jack and charge cavity between water coolant girder steel; The position of three described electrode jacks be with bell center for the center of circle circumferentially, around each electrode, also offer multiple charging opening, for interpolation and the adjustment of particulate coal and calcium oxide etc. when going into operation.
Described electrode jack and charging opening periphery are furnished with electrode sealing-ring and the filling tube sealing-ring of sealing respectively, and the junction of the blanking barrel of described lower bell and upper stove is sealed by carbon seal ring.
The main body of described lower stove is the fire brick layer of thermal insulation layer parcel, is covered with one deck carbon element brick layer, to bear the erosion of high-temperature liquid state calcium carbide at the furnace bottom of lower stove.
Described lower stove entirety is supported on refractory concrete by base joist steel, and have calcium carbide tail gas relief outlet on the sidewall of the furnace body top of lower stove, lower sidewall has liquid calcium carbide spout.
Compared with prior art, the utility model at least has following beneficial effect: existing calcium carbide industrial installation is all electric arc heat supply, and the heat of oxidation calcium carbide device proposed at present is all coal dust firing heat supply, the utility model proposes the mode of the burning of breeze airflow bed and electric arc combined heat first, and the grafting achieving two kinds of technology is integrated.In this device, coal dust and calcium oxide generate calcium carbide through entrained-flow reactor and arc reactor two-stage reaction, pulverized coal friring heat in entrained-flow reactor provides the most of heat needed for reaction, so more existing electric arc furnace greatly reduces power consumption, reduces production cost.Arc reactor provides the high-temperature stable thermal source up to 2200 DEG C, make unreacted raw material reaction in entrained-flow reactor complete, and heat up modified to gained calcium carbide product, product quality so can be made higher than the hot method product of conventional oxygen, avoid again a difficult problem for the easy oxidized erosion of high temperature section refractory materials in the hot subtraction unit of oxygen, made the investment of device reduce life.
[accompanying drawing explanation]
Fig. 1 is the structural representation of associating calcium carbide reactor of the present utility model;
Fig. 2 is the vertical view of associating calcium carbide reactor of the present utility model;
Fig. 3 is the close-up schematic view of associating calcium carbide reactor of the present utility model shown in Fig. 1.
Description of reference numerals: 1-feeding-passage, 2-oxygen channel, 3-water cold sleeve, 4-portfire, 5-furnace top flange lid, 6-hyperchannel spout, the upper stove burner hearth of 7-, the upper stove flame retardant coating of 8-, the upper stove thermal insulation layer of 9-, the upper stove outer covering of 10-, 11-blanking barrel, the upper stove bearing of 12-, stove bell under 13-, stove burner hearth under 14-, the hollow girder steel of 15-, 16-carbon pole, 17-block material charging opening, 18-carbon seal ring, 19-electrode sealing-ring, 20-filling tube sealing-ring, stove thermal insulation layer under 21-, stove fire brick layer under 22-, 23-carbon element brick layer, stove outer covering under 24-, 25-base joist steel, 26-refractory concrete, 27-acetylene exports, 28-calcium carbide exports.
[embodiment]
For solving the problem that during calcium carbide is produced, electric heating process power consumption is high and oxygen hot method equipment manufacturing difficulty is large, use for reference gasification and the calcium carbide manufacture device of ripe operation at present, the utility model proposes reactor and the method for a kind of entrained-flow reactor and arc reactor combination producing calcium carbide first.The program effectively can utilize powder raw material, realizes the pulverized coal friring heat supply of calcium carbide, have exploitation and build difficulty little, investment and running cost is low, the advantage of long service life.
As shown in Figure 1 to Figure 3, the associating calcium carbide reactor involved by the utility model contains stove (entrained-flow reactor) and lower stove (arc reactor) two major partss.Upper stove is cylindrical tube body structure, and aspect ratio is greater than 3.Upper furnace roof portion is the hyperchannel spout 6 of charging, hyperchannel spout 6 is multilayer sleeve structures, pipe core is the feeding-passage 1 of coal dust and powdery calcium oxide, ring cavity between pipe core and outer layer sleeve is combustion oxygen passage 2, in bottom ring cavity, gas rotating blade is also housed, makes burning more abundant for enriched with oxygen with mixing of powder in center sleeve.The outermost layer of hyperchannel spout is the water-cooled sleeve 3 that cooling-water duct is formed, and is also furnished with the portfire 4 of control combustion in the outside of hyperchannel spout 6, does for subsequent use under the combustion instability operating mode such as to go into operation.Top hyperchannel spout 6 is connected with burner hearth main body 7 by furnace top flange lid 5.Burner hearth adopts hot wall form to reduce the thermal losses of coal dust firing, and its interior wall construction is followed successively by high-temperature flame-proof layer 8 and thermal insulation layer 9, and both are fixed in steel shell 10.Lower furnace portion is connected with blanking barrel 11 after closing up with cone surface, and individual flare is arranged at the bottom of blanking barrel, and the object of this design is the distribution area in order to expand liquid blanking.Upper stove is furnished with four bearings 12, by the weight support of upper stove on prewired bearing beam.
The similar of lower stove is in the calcium carbide electric arc furnace of routine.Lower stove is drum organization, mainly comprises bell 13 and burner hearth 14 two portions.The main body of bell 13 is the water-cooled hollow girder steels 15 intersected in length and breadth, is reserved with the space such as electrode jack, charge cavity between girder steel.In order to energy and upper stove effectively coordinate, special layout is carried out to the electrode position on lower stove bell, to reserve the blanking space of stove.Three electrode jacks on lower bell remote with one heart uniform (specifically, three electrode jacks be evenly arranged in bell center for the center of circle circumferentially), when there is electric arc, the arcing district (region that the high temperature that electric arc sends can be applied to) of three-phase electrode 16 can cover the feeding zone of lower stove substantially, and (feeding zone is exactly the region that lower stove can accept raw material, when raw material falls, the feeding zone of lower stove can be dropped on).Several charging openings 17 are also had in addition, for interpolation and the adjustment of particulate coal and calcium oxide etc. when the special operation condition such as going into operation at each surrounding them.Electrode sockets and charging opening periphery are furnished with electrode sealing-ring 19 and the filling tube sealing-ring 20 of sealing respectively.Lower stove bell 13 is sealed by carbon seal ring 18 with the junction of upper stove blanking barrel.
The main body of lower stove is the fire brick layer 22 that thermal insulation layer 21 wraps up, and lower stove furnace bottom will bear the erosion of high-temperature liquid state calcium carbide, therefore on the fire-resistant inwall of lower stove furnace bottom, be also covered with one deck carbon element brick layer 23.The thermal insulation layer of lower stove is wrapped with steel shell 24, and lower stove entirety is supported on refractory concrete 26 by base joist steel 25.Have calcium carbide tail gas relief outlet 27 in the side wall upper part of body of heater, lower sidewall has liquid calcium carbide spout 28.
Described upper stove is on the central axis of lower stove and (namely goes up the central axes of stove and lower stove), be connected by the blanking barrel of upper stove, both layout features are that the feeding zone of upper stove in molten bath can form tangent relation with the arc region of lower stove three electrodes, so can effectively utilize electric arc heat and form homogeneous state tabetisol altogether, improve utilization rate of electrical.
Technical process of the present utility model is as follows:
1. first supplied materials raw coal and calcium oxide are dried to water-content 0.6-1.2%, then crushing and screening is carried out, reserved small portion granularity at the raw material of 10-25mm as the raw material (using during at special operation conditions such as drivings) of lower stove, major part coal dust and calcium oxide particle are finely ground to less than 100 microns (150 mesh standard sieve sieving rates 95%) in coal pulverizer, and the qualified powder of granularity is as the charging of upper stove;
2. in start-up, the coal charge of 10-25mm and calcium oxide raw material are added lower stove burner hearth by the charging opening of lower stove, under the effect of electrode arc heat, reaction forms initial carbide liquid molten bath;
3. use nitrogen to do the abundant fluidisation of carrier gas the coal dust and calcium oxide mixture that are finely ground to less than 100 microns, spray in stove burner hearth after then mixing further with oxygen-rich air in hyperchannel spout and burn.Make upper stove fire box temperature maintain about 1700-1900 DEG C by the burning of coal dust, remaining coal dust and calcium oxide absorb heat and most of reaction generates carbide of calcium and acetylene;
4. coal dust, the calcium oxide of going up liquid carbide of calcium in stove and non-complete reaction fall into lower stove molten bath by the blanking barrel of upper stove, about 2100-2300 DEG C is warmed up to further by the arc heat furnace charge of electrode, after remaining coal dust reacts completely, then exported the carbide liquid of generation to enter in calcium carbide pot by calcium carbide and remove follow-up cooling crushing section;
5. go up heat smoke that stove burning and reaction produce react by the blanking barrel of upper stove and lower stove the acetylene produced and converge in burner hearth, then exported by the acetylene on sidewall together and be expelled to dedusting and cool workshop section.
Described carbon raw material can be semicoke, coke, meager coal or hard coal etc.To the quality index of carbon raw material and the index of traditional electric heating process calcium carbide technique STRENGTH ON COKE and semicoke close, moisture content can be relaxed to 1.0-2.0%;
Described calcic raw material can be calcium oxide, calcium hydroxide, carbide slag and calcium carbonate.Must ask close to electric heating process calcium carbide technique the index request of calcium oxide calcic raw material.
The mass ratio of described powdery (less than 100 microns) carbon raw material and calcic raw material is 1-3:1, and preferred mass ratio is 1.5:1; The mass ratio of block (10-25 millimeter) carbon raw material and calcic raw material is 0.4-1.0:1, and preferred mass ratio is 0.6:1.
Described oxygen-rich air index be oxygen content higher than 80%, in oxygen and powdery carbon raw material, the mass ratio of carbon is 0.6-2.0:1.
The heat smoke generated in described upper stove reaction process and frit reaction thing flow into lower stove by blanking barrel in the same way, then derive reactor by lower stove.So effectively facilitate the flowing of melts, and the difficult problem that when avoiding countercurrent flow, powder raw material is taken out of by acetylene.
Below in conjunction with drawings and Examples the utility model done and describe in detail further.
Basic thought of the present utility model utilizes entrained-flow reactor and combining of arc reactor to realize utilizing powder raw material to complete the energy-efficient production of calcium carbide.
Embodiment 1:
The raw coal of drying and calcium oxide are carried out crushing and screening.The block stock that wherein a small amount of granularity is positioned at 10-25 millimeter is added lower stove in advance by the charging opening around carbon electrode.Produced the high temperature of about 2200 DEG C in lower stove by the electric arc heat release of carbon electrode, make the block stock added by thermal response, form calcium carbide molten bath.Granularity is less than below the further abrasive dust to 100 of raw material micron of 10 millimeters, then according to raw coal: the weight ratio mixing of calcium oxide=0.9:1.After powder raw material fully mixes fluidisation with oxygen-rich air, Condensed transportation is to the hyperchannel spout of upper stove.In hyperchannel spout, allocate according to the weight ratio of 1.2:1 the oxygen that purity reaches 80% into simultaneously.The high temperature that the coal dust of upper stove and oxygen mix afterfire produce about 1700 DEG C is sprayed into by hyperchannel spout.The partial oxidation calcium powder material sprayed at these elevated temperatures and coal dust contact reacts generate carbide of calcium, and newly-generated carbide of calcium forms liquid form mixt under the high temperature conditions with unreacted calcium oxide and coal dust further.The heat smoke that burning and reaction produce and liquid form mixt flow through the centre that upper fire-grating cinder notch falls into lower stove.
The liquid form mixt in the calcium carbide molten bath fallen into from upper stove to be heated by the electric arc simultaneously after 2100-2300 DEG C complete reaction and modified further.The calcium carbide product generated is flowed in calcium carbide pot by the calcium carbide outlet of lower stove and removes follow-up cooling crushing section.On average get off, each ton of feed coal can produce the calcium carbide of about 0.4 ton, and its purity is more than 65%, and calcium carbide gas production rate is about 270L/kg.
Embodiment 2:
The pyrolysis char of drying and calcium oxide are sieved, granularity is greater than the block semicoke of 10 millimeters and calcium oxide raw material by the weight ratio of 0.7:1, directly adds lower stove by the block stock charging opening around carbon electrode.Produced the high temperature of about 2200 DEG C in lower stove by the electric arc heat release of carbon electrode, make the block stock added by thermal response, form calcium carbide molten bath.
Coal dust below abrasive dust to 100 micron and calcium oxide raw material are mixed according to the weight ratio of 1.5:1.Then use carbon dioxide fully to mix fluidisation, two-phase transportation is to the hyperchannel spout of upper stove.In hyperchannel spout, allocate according to the weight ratio of 1.35:1 the oxygen that purity is 95% into simultaneously.Spray into the coal dust in stove and the fierce mixed firing of oxygen, make fire box temperature be elevated to about 1800-2000 DEG C.The partial oxidation calcium powder material sprayed at these elevated temperatures and coal dust contact reacts generate carbide of calcium, and newly-generated carbide of calcium and unreacted calcium oxide and coal dust form liquid form mixt under the high temperature conditions further.The heat smoke that burning and reaction produce and liquid form mixt flow through the centre that upper fire-grating cinder notch falls into lower stove.Enter in calcium carbide pot by calcium carbide outlet after further temperature reaction in liquid state molten pool, then follow-up cooling workshop section is gone in conveying.On average get off, each ton of feed coal can produce the calcium carbide of about 0.55 ton, and its purity is about 80%, and calcium carbide gas production rate is about 300L/kg.
Embodiment 3:
Produced the high temperature of about 2200 DEG C in lower stove by the electric arc heat release of carbon electrode, make the block semicoke that adds in advance and calcium oxide raw material by thermal response, form calcium carbide molten bath.After molten bath is stable, continue the block semicoke and the calcium oxide raw material that add more than 10 millimeters in downward stove burner hearth by the weight ratio of 0.65:1.In its weight ratio added and upper stove, the weight ratio of powder raw material maintains about 0.8:1.
In maintenance, in stove charging, the weight ratio of coal dust and calcium oxide 1.5:1 is constant, its feeding quantity is adjusted to 60% of specified add-on.Use nitrogen by the hyperchannel spout of powder raw material two-phase transportation to upper stove, in spout, allocate according to the weight ratio of 1.2:1 the oxygen that purity is 80% into simultaneously.In upper stove, coal dust firing maintains its fire box temperature at 1800-2000 DEG C.Liquid slag in upper stove after combustion reactions flows into temperature reaction further in lower stove, and the discharging time of the lower stove of prolongation is to 2h.During upper and lower stove charging simultaneously reaction, each ton of feed coal can produce the calcium carbide of about 0.45 ton, and its purity is about 75%, and calcium carbide gas production rate is about 280L/kg.
The relatively existing technique of this technique and device have following innovative point:
1. existing calcium carbide industrial installation is all electric arc heat supply, and the heat of oxidation calcium carbide device proposed at present is all coal dust firing heat supply, and the utility model proposes the mode of the burning of breeze airflow bed and electric arc combined heat first, and the grafting achieving two kinds of technology is integrated.In this device, coal dust and calcium oxide generate calcium carbide through entrained-flow reactor and arc reactor two-stage reaction, pulverized coal friring heat in entrained-flow reactor provides the most of heat needed for reaction, so more existing electric arc furnace greatly reduces power consumption, reduces production cost.Arc reactor provides the high-temperature stable thermal source up to 2200 DEG C, make unreacted raw material reaction in entrained-flow reactor complete, and heat up modified to gained calcium carbide product, product quality so can be made higher than the hot method product of conventional oxygen, avoid again a difficult problem for the easy oxidized erosion of high temperature section refractory materials in the hot subtraction unit of oxygen, made the investment of device reduce life.
2. oxygen hot method furnace of calcium carbide uses loading problems during powder raw material all to solve bad always, has occurred that powder raw material turns round and round on reactor top and taken out of the problem of reactor by acetylene in such as patent CN201210569784.0 because of powder raw material and acetylene countercurrent flow.Use for reference at present ripe air-flow bed coal-gasification stove, the utility model have employed the heat smoke that generates in stove and molten product flows into the scheme of lower stove in the same way by blanking barrel.So both avoid powder raw material to feed in raw material not smooth problem, facilitate again the flowing of melts.
This technique and device as follows relative to the advantage of existing technique and device:
1. going up stove and lower stove has ripe full scale plant can for using for reference, therefore the exploitation of comparing the hot method furnace of calcium carbide of oxygen of this calcium carbide combined reactor with build difficulty and all greatly reduce.
2. airtight electric arc furnace produces the block stock that calcium carbide technique can only use more than 5mm at present, causes the waste of a large amount of powder raw material, and this device uses powder raw material charging can realize carbon raw material and the whole of calcic raw material effectively utilize.The granularity reducing solid material is in addition conducive to the contact mass transfer of storeroom, is conducive to the response intensity in augmenting response device, and reduces the initial reaction temperature of carbide of calcium, effectively can reduce the energy consumption that calcium carbide is produced.
3. to obtain the high temperature that the calcium carbide of carbide of calcium purity more than 70% just needs to make to reach nearly 1900-2200 DEG C in reactor, the refractory materials used under this hot conditions is carbon element brick mainly, but carbon element brick is difficult to bear the high temperature erosion of oxygen in stove under oxygen thermal process, this is the biggest problem of the hot method furnace of calcium carbide exploitation of oxygen, and is difficult to effective solution at present.The pyroreaction section (2000-2300 DEG C) of hot for oxygen method furnace of calcium carbide uses ripe arc reactor to replace by the utility model, has effectively avoided the problem of refractory materials, thus greatly reduces development difficulty and investment cost.
Claims (10)
1. produce the combined reactor of calcium carbide for one kind, it is characterized in that: comprise stove and lower stove, the bottom of described upper stove is provided with blanking barrel (11), material drops in blanking barrel (11) from upper furnace roof portion and then enters in lower stove burner hearth (14), and forms feeding zone in lower stove burner hearth (14); Described lower stove is provided with three-phase electrode, and when there is electric arc, described lower stove is provided with three-phase electrode, and the high-temperature zone that the electric arc that electrode produces is formed extends to the center, feeding zone formed when material falls.
2. a kind of combined reactor producing calcium carbide according to claim 1, it is characterized in that: described upper stove furnace roof is provided with hyperchannel spout (6), pulverulent material and oxygen are entered in stove burner hearth (7) by this hyperchannel spout (6).
3. a kind of combined reactor producing calcium carbide according to claim 2, it is characterized in that: described hyperchannel spout is multilayer sleeve structure, pipe core is the feeding-passage (1) of coal dust and powdery calcic raw material, outermost layer is the water-cooled sleeve (3) that cooling-water duct is formed, and the annular chamber between feeding-passage and water-cooled sleeve is combustion oxygen passage (2).
4. a kind of combined reactor producing calcium carbide according to Claims 2 or 3, is characterized in that: the bottom of described hyperchannel spout is provided with gas rotating blade, for mixing of enriched with oxygen and powder in center sleeve, makes burning more abundant.
5. a kind of combined reactor producing calcium carbide according to claim 1, is characterized in that: the central axes of described upper stove and lower stove, is connected by the blanking barrel of upper stove; The burner hearth of described upper stove adopts hot wall form to reduce the thermal losses of coal dust firing, and its interior wall construction is followed successively by flame retardant coating (8) and thermal insulation layer (9), and this flame retardant coating and thermal insulation layer are fixed in the upper stove outer covering (10) of steel.
6. a kind of combined reactor producing calcium carbide according to claim 1, it is characterized in that: the upper and lower external diameter of described upper stove is all less than the external diameter of burner hearth medium position, the little structure broad in the middle in two, described blanking barrel is arranged on the bottom of stove, and the bottom of blanking barrel is provided with flare, to expand the distribution area of liquid blanking.
7. a kind of combined reactor producing calcium carbide according to claim 1, it is characterized in that: described lower stove is circular configuration, comprise bell (13) and burner hearth (14), the main body of described bell (13) is the water-cooled hollow girder steel (15) intersected in length and breadth, is reserved with electrode jack and charge cavity between water coolant girder steel; The position of three described electrode jacks be with bell center for the center of circle circumferentially, around each electrode, also offer multiple charging opening (17), for interpolation and the adjustment of particulate coal and calcium oxide etc. when going into operation.
8. a kind of combined reactor producing calcium carbide according to claim 7, it is characterized in that: described electrode jack and charging opening periphery are furnished with electrode sealing-ring (19) and the filling tube sealing-ring (20) of sealing respectively, the junction of the blanking barrel of described lower stove bell and upper stove is sealed by carbon seal ring (18).
9. a kind of combined reactor producing calcium carbide according to claim 1, it is characterized in that: the main body of described lower stove is the fire brick layer (22) that thermal insulation layer (21) wraps up, one deck carbon element brick layer (23) is covered with, to bear the erosion of high-temperature liquid state calcium carbide at the furnace bottom of lower stove.
10. a kind of combined reactor producing calcium carbide according to claim 1, it is characterized in that: described lower stove entirety is supported on refractory concrete (26) by base joist steel (25), have calcium carbide tail gas relief outlet (27) on the sidewall of the furnace body top of lower stove, lower sidewall has liquid calcium carbide spout (28).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600784A (en) * | 2015-09-16 | 2016-05-25 | 陕西煤业化工技术研究院有限责任公司 | Combined reactor for production of calcium carbide and method |
| CN106082226A (en) * | 2016-08-05 | 2016-11-09 | 北京神雾环境能源科技集团股份有限公司 | A kind of high temperature pressure ball produces the system and method for carbide |
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2015
- 2015-09-16 CN CN201520718598.8U patent/CN205023865U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105600784A (en) * | 2015-09-16 | 2016-05-25 | 陕西煤业化工技术研究院有限责任公司 | Combined reactor for production of calcium carbide and method |
| CN105600784B (en) * | 2015-09-16 | 2018-09-07 | 陕西煤业化工技术研究院有限责任公司 | A kind of combined reactor and method producing calcium carbide |
| CN106082226A (en) * | 2016-08-05 | 2016-11-09 | 北京神雾环境能源科技集团股份有限公司 | A kind of high temperature pressure ball produces the system and method for carbide |
| CN106082226B (en) * | 2016-08-05 | 2018-02-27 | 神雾科技集团股份有限公司 | A kind of system and method for high temperature pressure ball production calcium carbide |
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