CN103708458A - Method for preparing calcium carbide - Google Patents
Method for preparing calcium carbide Download PDFInfo
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- CN103708458A CN103708458A CN201310728807.2A CN201310728807A CN103708458A CN 103708458 A CN103708458 A CN 103708458A CN 201310728807 A CN201310728807 A CN 201310728807A CN 103708458 A CN103708458 A CN 103708458A
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- tire
- carbon black
- calcium carbide
- pyrolysis
- calcium
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- 239000005997 Calcium carbide Substances 0.000 title claims abstract description 93
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 64
- 239000006229 carbon black Substances 0.000 claims abstract description 82
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000002994 raw material Substances 0.000 claims abstract description 39
- 238000004519 manufacturing process Methods 0.000 claims abstract description 33
- 229910052742 iron Inorganic materials 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000003723 Smelting Methods 0.000 claims abstract description 8
- 238000000197 pyrolysis Methods 0.000 claims description 64
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 54
- 229910052791 calcium Inorganic materials 0.000 claims description 54
- 239000011575 calcium Substances 0.000 claims description 54
- 239000002245 particle Substances 0.000 claims description 48
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 15
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 15
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 15
- 235000012255 calcium oxide Nutrition 0.000 claims description 15
- 239000000292 calcium oxide Substances 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 15
- 239000004571 lime Substances 0.000 claims description 15
- 238000003786 synthesis reaction Methods 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 238000005272 metallurgy Methods 0.000 claims description 12
- 238000010891 electric arc Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 241001062472 Stokellia anisodon Species 0.000 claims description 9
- 238000013467 fragmentation Methods 0.000 claims description 9
- 238000006062 fragmentation reaction Methods 0.000 claims description 9
- 238000011282 treatment Methods 0.000 claims description 8
- 239000010920 waste tyre Substances 0.000 claims description 8
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 4
- 239000006148 magnetic separator Substances 0.000 claims description 4
- 238000007885 magnetic separation Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 10
- 241000872198 Serjania polyphylla Species 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 13
- 239000000571 coke Substances 0.000 description 9
- 230000002829 reductive effect Effects 0.000 description 7
- 238000006722 reduction reaction Methods 0.000 description 5
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000011284 combination treatment Methods 0.000 description 3
- 238000005485 electric heating Methods 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid group Chemical group C(CCCCCCC\C=C/CCCCCCCC)(=O)O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a method for preparing calcium carbide, which comprises the following steps: pyrolyzing junked tires to obtain high-temperature oil gas, iron wires and tire carbon black; mixing the tire carbon black with a calcium-base raw material to obtain a mixture; forming the mixture to obtain a massive furnace raw material; and smelting the massive furnace raw material in an arc furnace to obtain the calcium carbide. The technique can obviously lower the temperature and energy consumption, thereby lowering the production cost of the calcium carbide.
Description
Technical field
The present invention relates to chemical field, particularly, the present invention relates to a kind of method of preparing calcium carbide.
Background technology
Calcium carbide formal name used at school carbide of calcium, clear crystal, mainly for the production of acetylene gas.Acetylene gas can be prepared number of chemical product, comprises vinyl chloride serial, vinyl acetate between to for plastic series and oleic series, is once called as " mother of organic synthesis industry ".The hot method of calcium carbide production method aerobic and electric heating process, China mainly adopts electric heating process to produce calcium carbide at present: calcium based raw material and carbon back raw material carry out pyroreaction in electric furnace, and carbon back raw material participates in reaction as reductive agent, finally generates carbide of calcium (calcium carbide).
Calcium carbide carries out high temperature reduction by carbon raw material and calcium based raw material and reacts production, and the quality of raw material has very important relation to calcium carbide energy consumption.Tradition is used coke or semicoke as reductive agent, has that speed of reaction is slow, a defect such as long reaction time and temperature of reaction height, cause current consumption large, yield poorly.
Therefore, the existing method of preparing calcium carbide is urgently improved.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.For this reason, one object of the present invention is to propose a kind of method of preparing calcium carbide, and this technique can significantly reduce temperature of reaction and energy consumption, and then reduces the production cost of calcium carbide.
In one aspect of the invention, the present invention proposes a kind of method of preparing calcium carbide, according to the method for preparing calcium carbide of the embodiment of the present invention, comprise: junked tire is carried out to pyrolysis, to obtain high-temperature oil gas, iron wire and tire carbon black; Described tire carbon black is mixed with calcium based raw material, to obtain mixture; Described mixture is carried out to forming processes, to obtain block feed stock for blast furnace; And described block feed stock for blast furnace is carried out to metallurgy in electric arc furnace, to obtain described calcium carbide.According to the method for preparing calcium carbide of the embodiment of the present invention, this technique is usingd cheap junked tire and is carried out carbon black that pyrolysis processing makes as carbon back raw material, substituted expensive coke, can significantly reduce calcium carbide production cost, and the tire carbon black obtaining by pyrolysis is that particle diameter is that nano level can fully mix with calcium original washing powder, increase the point of contact of the two, and then improve the two reactive behavior, reduced smelting temperature, thereby make electric arc furnace Energy Intensity Reduction, by pyrolysis, obtain tire carbon black in hot simultaneously, there is good activity, partly or entirely after substitute for coke, can further reduce and smelt temperature of reaction and energy consumption.
In addition, the method for preparing calcium carbide according to the above embodiment of the present invention can also have following additional technical characterictic:
In some embodiments of the invention, junked tire is carried out to pyrolysis, to obtain high-temperature oil gas, iron wire and tire carbon black, further comprise: junked tire is carried out to fragmentation, to obtain the tire particle that median size is no more than 50mm; Described tire particle, under the pressure of 10～1000pa, is carried out to pyrolysis 0.5～2 hour at the temperature of 450～800 degrees Celsius, to obtain high-temperature oil gas and comprise iron wire and the using pyrolysis product of tire carbon black; By magnetic separation, the iron wire in described using pyrolysis product and tire carbon black are carried out separated, to obtain respectively tire carbon black and iron wire; And described high-temperature oil gas is carried out to condensation, separation and purifying treatment successively, to obtain respectively high heating value tar and synthesis gas.Thus, junked tire can be obtained to high heating value synthetic gas, tar, iron wire and carbon black product by pyrolysis processing, can realize the clean and effective utilization of junked tire.
In some embodiments of the invention, described tire particle, under the pressure of 100Pa, is carried out to pyrolysis 1 hour at the temperature of 550 degrees Celsius, to obtain high-temperature oil gas and comprise iron wire and the using pyrolysis product of tire carbon black.Thus, can realize the clean and effective utilization of junked tire.
In some embodiments of the invention, the mass ratio of described calcium based raw material and tire carbon black is between scope 1～2:1, is preferably 7:4.Can improve calcium carbide productivity thus.
In some embodiments of the invention, before described tire carbon black is mixed with calcium based raw material, further comprise: described calcium based raw material is carried out to fragmentation, to obtain calcium base particle, the median size of described calcium base particle is all not more than 3mm, is preferably and is not more than 0.1mm.Described tire carbon black is hot and particle diameter is nano level.Thus, tire carbon black and calcium base are mixed, reduced smelting temperature, with efficiently carrying out of the reduction reaction of convenient subsequent production calcium carbide.
In some embodiments of the invention, the median size of described block feed stock for blast furnace is 5～30mm.Thus, can significantly improve subsequent smelting efficiency.
In some embodiments of the invention, described metallurgy is under 1400～1750 degrees Celsius, to carry out 5～45 minutes.Thus, can further improve calcium carbide production efficiency.
In some embodiments of the invention, described metallurgy is under 1500 degrees Celsius, to carry out 10 minutes.Thus, can further improve the production efficiency of calcium carbide.
In some embodiments of the invention, the method that the present invention prepares calcium carbide specifically comprises the following steps: that (1) get the raw materials ready: junked tire is crushed to the waste tyre particle below 50mm, unslaked lime, by crusher in crushing, is obtained to the calcium lime powder that mean particle size is not more than 0.1mm; (2) pyrolysis: by carrying out pyrolysis in the described waste tyre particle input pyrolysis reactor in step (1), so that the using pyrolysis product that obtains high-temperature oil gas, comprises iron wire and tire carbon black; Described high-temperature oil gas, successively by condensation, separation, purifying treatment, is obtained respectively to high heating value tar and synthesis gas; The described using pyrolysis product that comprises iron wire and tire carbon black is separated by magnetic separator, to obtain iron wire and tire carbon black; Wherein, described pyrolysis reactor is without thermal barrier heat accumulating type rotating bed, and in described pyrolysis reactor, pyrolysis temperature is that 550 ℃, pyrolysis time are that 1 hour, synthesis pressure are 100Pa; (3) batching: according to fixed carbon content in the fixed carbon content of calcium carbide manufacturing technique requirent and tire carbon black, determine the consumption of tire carbon black, press CaO content in the CaO content of calcium carbide manufacturing technique requirent and calcium lime powder, determine the consumption proportion of tire carbon black and calcium lime powder, preferably, the mass ratio of described calcium lime powder and described tire carbon black is 7:4; (4) mix: the tire carbon black obtaining in step (2) is fully mixed 20 minutes according to the quality proportioning in step (3) with described calcium lime powder in mixing machine, and the tire carbon black obtaining in described step (2) is hot and particle diameter is nano level; (5) moulding: by forming machine compound stalk forming, granularity is 5～30mm by the mixture obtaining in step (4); (6) smelt: material after the moulding obtaining in step (5) is added in electric arc furnace, under 1500 degrees Celsius, smelt 10 minutes, to obtain the calcium carbide of molten state, and discharge with liquid form by furnace bottom, the calcium carbide of the molten state of discharge is cooling, fragmentation obtains the calcium carbide product that gas forming amount is 290L/kg.Thus, can realize the clean and effective utilization of the energy-saving and cost-reducing production of calcium carbide and junked tire simultaneously.
Additional aspect of the present invention and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage accompanying drawing below combination obviously and is easily understood becoming the description of embodiment, wherein:
Fig. 1 is the method flow schematic diagram of preparing according to an embodiment of the invention calcium carbide.
Embodiment
Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In prior art, calcium carbide is mainly for the production of acetylene gas.Acetylene gas can, for the preparation of number of chemical product, comprise vinyl chloride serial, vinyl acetate between to for plastic series and oleic series etc.China's calcium carbide is produced the main electric heating process that adopts, and usings coke or semicoke as carbon back raw material, and unslaked lime carries out mixed smelting as calcium based raw material and obtains calcium carbide.Yet due to coke or semicoke raw materials cost higher, cause the production cost of calcium carbide larger.Meanwhile, use semicoke as reductive agent, have on the one hand that speed of reaction is slow, a defect such as long reaction time and temperature of reaction height, the yield reducation of calcium carbide and electric furnace current consumption are increased; On the other hand, due to semicoke Ha Shi, can to grind index less, makes the mechanical energy consumption of broken process higher.
For this reason, in one aspect of the invention, the present invention proposes a kind of method of preparing calcium carbide, with reference to figure 1, according to embodiments of the invention, the method comprises:
S100: tire pyrolysis is processed
Junked tire is carried out to pyrolysis processing, thereby can obtain high-temperature oil gas, iron wire and tire carbon black.According to embodiments of the invention, the concrete steps of junked tire being carried out to pyrolysis processing comprise: first junked tire is carried out to break process, thereby can obtain tire particle; Tire particle is carried out to pyrolysis processing, thereby can obtain high-temperature oil gas and comprise iron wire and the using pyrolysis product of tire carbon black; The using pyrolysis product that comprises iron wire and tire carbon black is carried out to magnetic separation separated, thereby can obtain respectively tire carbon black and iron wire; And high-temperature oil gas is carried out to condensation, separation and purifying treatment successively, thereby can obtain respectively high heating value tar and synthesis gas.
According to embodiments of the invention, the particle diameter of gained tire particle is also not particularly limited, and according to a particular embodiment of the invention, the diameter of tire particle can further improve pyrolysis efficiency thus for below 50mm, reduces pyrolysis energy consumption.According to embodiments of the invention, tire particle carries out the actual conditions of pyrolysis processing and is not particularly limited, according to a particular embodiment of the invention, tire particle can be under the pressure of 10～1000pa, under 450～800 degrees Celsius, carry out pyrolysis 0.5～2 hour, contriver finds, can guarantee can not gasify under above-mentioned pyrolytical condition, is beneficial to produce oil.Preferably, tire particle, under 100Pa pressure, is carried out to pyrolysis 1 hour at the temperature of 550 degrees Celsius.In this step, with cheap junked tire, carry out pyrolysis and produce alternative expensive coke or the semicoke of carbon black, solved on the one hand a processing difficult problem for junked tire, reduced on the other hand the production cost of calcium carbide, and the high heating value tar producing in junked tire pyrolytic process and synthesis gas can be used as chemical fuel and proceed to use, realized the clean and effective of junked tire and processed.Meanwhile, contriver finds, usings tire carbon black as carbon back raw material, can significantly reduce temperature of reaction and the time of producing calcium carbide, and then reduces the energy consumption of electric furnace.In addition, it is larger that the Ha Shi of tire carbon black can grind index, can significantly reduce the mechanical energy consumption of broken process.Thus, adopt tire carbon black as carbon back raw material, can significantly improve the production efficiency of calcium carbide, and reduce the production cost of calcium carbide.According to a particular embodiment of the invention, the granularity of the tire carbon black that above-mentioned pyrolysis obtains is less, and for Nano grade is not more than 1 micron, and the temperature of tire carbon black is 300～500 degrees Celsius.Can more be convenient to thus mix with calcium based raw material.
S200: tire carbon black mixes with calcium based raw material
Junked tire is carried out to combination treatment with calcium based raw material after pyrolysis processing is made tire carbon black, thereby obtain mixture.According to embodiments of the invention, the concrete raw material of the calcium base that uses is also not particularly limited, and according to a particular embodiment of the invention, can select unslaked lime as calcium based raw material.According to embodiments of the invention, the blending ratio of calcium based raw material and tire carbon black is also not particularly limited, the mixing quality ratio of calcium based raw material and tire carbon black can be between 1～2:1, according to a particular embodiment of the invention, according to calcium carbide manufacturing technique requirent, preferably the mass ratio of calcium based raw material and tire carbon black is 7:4.
According to embodiments of the invention, pyrolysis gained tire carbon black is hot and particle diameter is nano level, before tire carbon black and calcium based raw material are carried out to combination treatment, calcium based raw material is carried out to break process, thereby can obtain calcium base particle, then by tire carbon black and calcium base particle, the two mixes.According to embodiments of the invention, the size of the broken gained calcium base particle of process is also not particularly limited.Contriver finds, calcium based raw material is ground into the particle that granularity is less and can effectively reduces calcium carbide smelting temperature.According to a particular embodiment of the invention, calcium based raw material can be crushed to the calcium base particle that median size is not more than 3mm, preferably be crushed to mean particle size and be not more than 0.1mm.Thus, calcium base and carbon back raw material are mixed with particle form, calcium base can fully be contacted with carbon back, improved the two reactive behavior, further reduce thus the temperature of reaction of metallurgy, Reaction time shorten.
S300: forming processes
Calcium base particle and tire carbon black pellet are carried out after abundant combination treatment obtains mixture, mixture being carried out to forming processes, thereby can obtain bulk, enter stove material.According to embodiments of the invention, mixture is by certain forming processes, and what can obtain the forms such as spherical or bar-shaped or sheet enters stove material.According to embodiments of the invention, forming processes is carried out compound stalk forming by briquetting press.According to embodiments of the invention, bulk enters the particle diameter of stove material and is not particularly limited, and according to a particular embodiment of the invention, forming processes can be prepared into mixture median size can enter for the bulk of 5～30mm stove material.Contriver's discovery, too low if the bulk that forming processes obtains enters the particle diameter of stove material, in electric arc furnace, easily form the airtight bed of material and duricrust, there is scaffold, hinder furnace gas discharge and increase furnace pressure, finally there is material spray and the material that collapses, affect production and safety.And particle diameter is too high, make into stove material specific surface area littlely, point of contact is few, and it is inhomogeneous to be heated, and causes calcium carbide production declining.Thus, the median size for preparing block feed stock for blast furnace through forming processes is 5～30mm, can effectively avoid the too low or too high negative impact bringing of particle diameter, and then improve calcium carbide preparation efficiency.
S400: metallurgy
Bulk is entered to stove material and in electric arc furnace, carry out metallurgy, thereby can obtain calcium carbide.Conventionally in the production of actual industrial calcium carbide, selecting granularity is 5～30 mm pieces material, in temperature of reaction, is to smelt 1-2h under 2000-2200 degree Celsius, and its production cost is higher.The condition of the metallurgy in the method for preparing calcium carbide of the embodiment of the present invention is also not particularly limited, and for example, can under 1400～1750 degrees Celsius, carry out metallurgy 5～45 minutes.According to a particular embodiment of the invention, preferred, metallurgy can be carried out 10 minutes under 1500 degrees Celsius.More traditional method of preparing calcium carbide significantly reduces production costs thus.
In electric arc furnace, carbon black reacts calcium carbide and the carbon monoxide that generates molten state with calcium oxide, and wherein, the calcium carbide of molten state is discharged with liquid form at the bottom of by arc furnace, and cooling rear fragmentation obtains calcium carbide product; And the reducing gas that the carbon monoxide producing can be used as in metallurgy industry is used.The tire carbon black that the present invention uses has the characteristics such as granularity is little, specific surface area is large, reactive behavior is high, with the advantage such as the part or all of substitute for coke of tire carbon black or semicoke are can realization response speed fast, the reaction times is short, temperature of reaction is low, and then reduce calcium carbide production energy consumption, improve calcium carbide output.
According to a particular embodiment of the invention, the method for preparing calcium carbide of the embodiment of the present invention specifically comprises the following steps:
(1) get the raw materials ready: junked tire is crushed to the waste tyre particle below 50mm, unslaked lime, by crusher in crushing, is obtained to the calcium lime powder that mean particle size is not more than 0.1mm; (2) pyrolysis: by carrying out pyrolysis in the waste tyre particle input pyrolysis reactor in step (1), so that the using pyrolysis product that obtains high-temperature oil gas, comprises iron wire and tire carbon black; High-temperature oil gas, successively by condensation, separation, purifying treatment, is obtained respectively to high heating value tar and synthesis gas; The using pyrolysis product that comprises iron wire and tire carbon black is separated by magnetic separator, to obtain iron wire and tire carbon black; Wherein, pyrolysis reactor is without thermal barrier heat accumulating type rotating bed, and in pyrolysis reactor, pyrolysis temperature is that 550 ℃, pyrolysis time are that 1 hour, synthesis pressure are 100Pa; (3) batching: according to fixed carbon content in the fixed carbon content of calcium carbide manufacturing technique requirent and tire carbon black, determine the consumption of tire carbon black, press CaO content in the CaO content of calcium carbide manufacturing technique requirent and calcium lime powder, determine the consumption proportion of tire carbon black and calcium lime powder, preferably, the mass ratio of calcium lime powder and described tire carbon black is 7:4; (4) mix: the tire carbon black obtaining in described step (2) is hot and particle diameter is nano level, and the hot tire carbon black obtaining in step (2) is fully mixed 20 minutes according to the quality proportioning in step (3) with calcium lime powder in mixing machine; (5) moulding: by forming machine compound stalk forming, granularity is 5～30mm by the mixture obtaining in step (4); (6) smelt: material after the moulding obtaining in step (5) is added in electric arc furnace, under 1500 degrees Celsius, smelt 10 minutes, to obtain the calcium carbide of molten state, and discharge with liquid form by furnace bottom, the calcium carbide of the molten state of discharge is cooling, fragmentation obtains the calcium carbide product that gas forming amount is 290L/kg.
As mentioned above, according to the method for preparing calcium carbide of the embodiment of the present invention, can have and be selected from following advantage one of at least:
According to the method for preparing calcium carbide of the embodiment of the present invention, junked tire obtains high heating value synthetic gas, tar, iron wire and carbon black product by pyrolysis, can realize the utilization of waste tire clean and effective;
According to the method for preparing calcium carbide of the embodiment of the present invention, coke production is the technique of a kind of highly energy-consuming, high pollution, and tire carbon black can be realized partly or entirely alternative high price coke production calcium carbide, realizes energy-saving and emission-reduction and reduces calcium carbide production cost;
According to the method for preparing calcium carbide of the embodiment of the present invention, tire carbon black granularity is little, specific surface area is large, can fully mix with calcium original washing powder material, is beneficial to efficiently carrying out of subsequent production calcium carbide reduction reaction;
According to the method for preparing calcium carbide of the embodiment of the present invention, tire carbon black reactive behavior is high, can effectively reduce the temperature and time of producing calcium carbide reaction, reduces electric furnace energy consumption, increases calcium carbide output;
According to the method for preparing calcium carbide of the embodiment of the present invention, the present invention can utilize tire to greatest extent, and tire pyrolysis and calcium carbide are produced to the process for cleanly preparing organically combining, and really realizes the energy-saving and cost-reducing production of calcium carbide and the utilization of junked tire clean and effective.
Below with reference to specific embodiment, present invention is described, it should be noted that, these embodiment are only descriptive, and do not limit the present invention in any way.
Embodiment
Junked tire is crushed to below 50mm, unslaked lime is passed through to crusher in crushing, thereby obtain the quicklime particles that granularity is less than 3mm; Broken waste tyre particle is inputted without thermal barrier heat accumulating type rotating bed, in temperature, be that 550 degrees Celsius, synthesis pressure are under 100Pa, to carry out pyrolytic reaction 1 hour, the using pyrolysis product that obtains high-temperature oil gas, comprises iron wire and tire carbon black, by the high-temperature oil gas producing successively after condensation, separation, purifying treatment, can obtain respectively high heating value tar and synthesis gas product, the using pyrolysis product that comprises iron wire and tire carbon black carries out separating treatment by magnetic separator, can obtain respectively tire carbon black and iron wire; Resulting tire carbon black is hot and particle diameter is nano level, according to mass ratio, is then that 4:7 fully mixes 20 minutes in mixing machine with quicklime particles (average grain is not more than 0.07mm); Material after mixing is carried out to compound stalk forming by forming machine, and the bulk that obtains granularity and be 5～30mm enters stove material; Gained bulk is entered to stove material and in electric arc furnace, smelt 10 minutes under 1500 degrees Celsius, obtain the calcium carbide of molten state, by furnace bottom, with liquid form, discharge, cooling rear fragmentation obtains the calcium carbide product that gas forming amount is 290L/kg.
According to the method for preparing calcium carbide of above-described embodiment, electric arc furnace smelting temperature can be reduced to 1400～1750 degrees Celsius by 2000～2200 degrees Celsius, the while energy-conservation 31.9%.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment within the scope of the invention in the situation that not departing from principle of the present invention and aim, modification, replacement and modification.
Claims (9)
1. a method of preparing calcium carbide, is characterized in that, comprising:
Junked tire is carried out to pyrolysis, to obtain high-temperature oil gas, iron wire and tire carbon black;
Described tire carbon black is mixed with calcium based raw material, to obtain mixture;
Described mixture is carried out to forming processes, to obtain block feed stock for blast furnace; And
Described block feed stock for blast furnace is carried out to metallurgy in electric arc furnace, to obtain described calcium carbide.
2. the method for preparing calcium carbide according to claim 1, is characterized in that, junked tire is carried out to pyrolysis, to obtain high-temperature oil gas, iron wire and tire carbon black, further comprises:
Junked tire is carried out to fragmentation, to obtain the tire particle that median size is no more than 50mm;
Described tire particle, under the pressure of 10～1000pa, is carried out to pyrolysis 0.5～2 hour at the temperature of 450～800 degrees Celsius, to obtain high-temperature oil gas and comprise iron wire and the using pyrolysis product of tire carbon black;
By magnetic separation, the iron wire in described using pyrolysis product and tire carbon black are carried out separated, to obtain respectively tire carbon black and iron wire; And
Described high-temperature oil gas is carried out to condensation, separation and purifying treatment successively, to obtain respectively high heating value tar and synthesis gas.
3. the method for preparing calcium carbide according to claim 2, it is characterized in that, described tire particle, under the pressure of 100Pa, is carried out to pyrolysis 1 hour at the temperature of 550 degrees Celsius, to obtain high-temperature oil gas and comprise iron wire and the using pyrolysis product of tire carbon black.
4. the method for preparing calcium carbide according to claim 1, is characterized in that, described calcium based raw material is that 1～2:1 carries out described mixing with tire carbon black according to mass ratio, and preferred mass is than being 7:4.
5. the method for preparing calcium carbide according to claim 1, is characterized in that, before described tire carbon black is mixed with calcium based raw material, further comprises:
Described calcium based raw material is carried out to fragmentation, to obtain calcium base particle,
The median size of described calcium base particle is not more than 3mm, is preferably and is not more than 0.1mm.
6. the method for preparing calcium carbide according to claim 1, is characterized in that, the median size of described block feed stock for blast furnace is 5～30mm.
7. the method for preparing calcium carbide according to claim 1, is characterized in that, described metallurgy is under 1400～1750 degrees Celsius, to carry out 5～45 minutes.
8. the method for preparing calcium carbide according to claim 7, is characterized in that, described smelting is under 1500 degrees Celsius, to carry out 10 minutes.
9. according to the method for preparing calcium carbide described in any one in claim 1-8, it is characterized in that, comprise the following steps:
(1) get the raw materials ready: junked tire is crushed to the waste tyre particle below 50mm, unslaked lime, by crusher in crushing, is obtained to the calcium lime powder that mean particle size is not more than 0.1mm;
(2) pyrolysis: by carrying out pyrolysis in the described waste tyre particle input pyrolysis reactor in step (1), so that the using pyrolysis product that obtains high-temperature oil gas, comprises iron wire and tire carbon black;
Described high-temperature oil gas, successively by condensation, separation, purifying treatment, is obtained respectively to high heating value tar and synthesis gas;
The described using pyrolysis product that comprises iron wire and tire carbon black is separated by magnetic separator, to obtain iron wire and tire carbon black;
Wherein, described pyrolysis reactor is without thermal barrier heat accumulating type rotating bed, and in described pyrolysis reactor, pyrolysis temperature is that 550 ℃, pyrolysis time are that 1 hour, synthesis pressure are 100Pa;
(3) batching: according to fixed carbon content in the fixed carbon content of calcium carbide manufacturing technique requirent and tire carbon black, determine the consumption of tire carbon black, press CaO content in the CaO content of calcium carbide manufacturing technique requirent and calcium lime powder, determine the consumption proportion of tire carbon black and calcium lime powder, preferably, the mass ratio of described calcium lime powder and described tire carbon black is 7:4;
(4) mix: the tire carbon black obtaining in step (2) is fully mixed 20 minutes according to the quality proportioning in step (3) with described calcium lime powder in mixing machine;
(5) moulding: by forming machine compound stalk forming, granularity is 5～30mm by the mixture obtaining in step (4);
(6) smelt: material after the moulding obtaining in step (5) is added in electric arc furnace, under 1500 degrees Celsius, smelt 10 minutes, to obtain the calcium carbide of molten state, and discharge with liquid form by furnace bottom, the calcium carbide of the molten state of discharge is cooling, fragmentation obtains the calcium carbide product that gas forming amount is 290L/kg.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905905A (en) * | 2016-06-16 | 2016-08-31 | 神雾环保技术股份有限公司 | Calcium carbide preparation method |
| CN105905907A (en) * | 2016-06-16 | 2016-08-31 | 神雾环保技术股份有限公司 | Calcium carbide preparation method |
| CN105905906A (en) * | 2016-06-16 | 2016-08-31 | 神雾环保技术股份有限公司 | Calcium carbide preparation method |
| CN105907436A (en) * | 2016-06-08 | 2016-08-31 | 北京神雾环境能源科技集团股份有限公司 | System and method for preparing calcium carbide raw material |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046140A (en) * | 1990-04-30 | 1990-10-17 | 伊敏河矿区发电厂 | Produce the technology of calcium carbide with brown coal |
| CN101883746A (en) * | 2007-11-14 | 2010-11-10 | 澳泽化学特罗斯特贝格有限公司 | Method for the production of calcium carbide on an industrial scale in an electric low-shaft furnace |
-
2013
- 2013-12-25 CN CN201310728807.2A patent/CN103708458B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046140A (en) * | 1990-04-30 | 1990-10-17 | 伊敏河矿区发电厂 | Produce the technology of calcium carbide with brown coal |
| CN101883746A (en) * | 2007-11-14 | 2010-11-10 | 澳泽化学特罗斯特贝格有限公司 | Method for the production of calcium carbide on an industrial scale in an electric low-shaft furnace |
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|---|---|---|---|---|
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| CN106082221A (en) * | 2016-06-16 | 2016-11-09 | 神雾环保技术股份有限公司 | The method preparing carbide |
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| CN106185940A (en) * | 2016-08-29 | 2016-12-07 | 北京神雾环境能源科技集团股份有限公司 | A kind of system and method processing waste and old electronic product |
| CN106185943A (en) * | 2016-08-29 | 2016-12-07 | 北京神雾环境能源科技集团股份有限公司 | A kind of system and method processing waste and old electronic product |
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| CN106185938B (en) * | 2016-08-29 | 2019-02-26 | 神雾科技集团股份有限公司 | A kind of system and method for Waste ammunition processing |
| CN107265456A (en) * | 2017-07-20 | 2017-10-20 | 神雾环保技术股份有限公司 | The system and method that calcium carbide is prepared using solid waste pyrolysis |
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