CN111515219B - High-temperature purification ash treatment system and method for calcium carbide furnace and material block - Google Patents
High-temperature purification ash treatment system and method for calcium carbide furnace and material block Download PDFInfo
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- CN111515219B CN111515219B CN202010265904.2A CN202010265904A CN111515219B CN 111515219 B CN111515219 B CN 111515219B CN 202010265904 A CN202010265904 A CN 202010265904A CN 111515219 B CN111515219 B CN 111515219B
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- 239000000463 material Substances 0.000 title claims abstract description 69
- 238000000746 purification Methods 0.000 title claims abstract description 57
- 239000005997 Calcium carbide Substances 0.000 title claims abstract description 36
- 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 36
- 238000000034 method Methods 0.000 title claims description 23
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 61
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 61
- 239000004571 lime Substances 0.000 claims abstract description 61
- 239000000843 powder Substances 0.000 claims abstract description 42
- 238000003756 stirring Methods 0.000 claims abstract description 37
- 239000000428 dust Substances 0.000 claims abstract description 23
- 238000003825 pressing Methods 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 29
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 11
- 238000005243 fluidization Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
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- 238000001514 detection method Methods 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 12
- 238000007599 discharging Methods 0.000 abstract description 9
- 230000002269 spontaneous effect Effects 0.000 abstract description 8
- 238000012545 processing Methods 0.000 description 11
- 239000007789 gas Substances 0.000 description 8
- 239000000292 calcium oxide Substances 0.000 description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 7
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B2101/00—Type of solid waste
- B09B2101/02—Gases or liquids enclosed in discarded articles, e.g. aerosol cans or cooling systems of refrigerators
Abstract
The high-temperature purified ash treatment system for the calcium carbide furnace comprises a purified ash bin 1, a lime bin 2, a stirring conveyor 3 and a pressing machine 4, wherein the purified ash bin 1 is used for containing high-temperature purified ash of the calcium carbide furnace; the lime bin 2 is used for containing lime powder; the stirring conveyor 3 is respectively connected with the purification ash bin 1 and the lime bin 2, and is used for mixing high-temperature purification ash with lime powder to obtain a mixed material, and conveying the mixed material to the pressing machine 4; the pressing machine 4 is connected with the stirring conveyor 3 and is used for pressing the mixed materials to obtain a material block. In the invention, the mixed material can be pressed into a fixed shape with better stability; the obtained material blocks can be used in multiple purposes, can be safely transported, realizes the harmless treatment of high-temperature purification ash, and has strong universality. The purified ash bin has stable discharging; the mixed material is pressed into a spherical shape, so that the problem of spontaneous combustion which is easy to occur is solved, and the dust removal system ensures the safety of equipment operation.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to a high-temperature ash purification treatment system and method for a calcium carbide furnace and a material block.
Background
When the calcium carbide furnace produces calcium carbide, calcium carbide furnace gas purification ash is also produced, and the calcium carbide furnace gas purification ash belongs to industrial waste residues and comprises CaO, C, CaC and trace MgO and SiO2、AI2O3The high-temperature purified ash is difficult to bond, contains a small amount of calcium carbide, is extremely easy to raise dust in the stacking process to pollute the environment, and is extremely easy to spontaneously combust when exposed to the air.
At present, industrial water is generally adopted for treating calcium carbide furnace gas purification ash, harmful gases such as acetylene and the like are separated from materials by water, the temperature is reduced to form wet materials, and then the wet materials are intensively stacked and dug for burying, so that the problem of environmental pollution exists.
In order to solve the problems, the prior patent CN 109179468A provides a production raw material and a production process for producing calcium oxide by using calcium carbide furnace gas purification ash. The calcium oxide is produced by using the calcium carbide furnace gas purification ash as a raw material, the whole process achieves clean production, the energy is saved, the cost is reduced, and the economic benefit of an enterprise is improved. However, the process and equipment for receiving the high-temperature purified ash are limited, and the process is not suitable for the case without a calcium oxide production line.
The prior patent CN203672164U discloses that the stove combustion system is returned to carbide stove purification ash, and it can directly carry on the on-the-spot transportation to the purification ash that comes from carbide production facility and retrieve, has overcome the purification ash because of having the problem of the difficult recovery transport that characteristics such as high temperature, flammable and explosive, adhesion brought. However, a combustion system is required, and the high-temperature treated dust is treated by generating a calcic product, magnesium oxide, or the like, and the dust portion in the high-temperature purified ash returned to the combustion also affects the combustion.
In the prior art, the two methods for purifying ash by using the calcium carbide furnace have high selectivity on field supporting facilities and processes, and are not easy to popularize.
Disclosure of Invention
The invention aims to solve the problems that the high-temperature purified ash treatment method and the high-temperature purified ash treatment system for the calcium carbide furnace are provided, and the problems of high fineness, difficult bonding and easy spontaneous combustion are solved; the problem that a processing method and a system in the prior art are not easy to popularize is solved.
In order to solve the problems, the invention provides a high-temperature purification ash treatment system for a calcium carbide furnace, which comprises a purification ash bin 1, a lime bin 2, a stirring conveyor 3 and a pressing machine 4, wherein the purification ash bin 1 is used for containing high-temperature purification ash of the calcium carbide furnace; the lime bin 2 is used for containing lime powder; the stirring conveyor 3 is respectively connected with the purification ash bin 1 and the lime bin 2, and is used for mixing high-temperature purification ash with lime powder to obtain a mixed material, and conveying the mixed material to the pressing machine 4; the pressing machine 4 is connected with the stirring conveyor 3 and is used for pressing the mixed materials to obtain a material block.
According to an embodiment of the present invention, the treatment system further comprises a first discharger 11 and a second discharger 21, wherein the first discharger 11 is connected with the ash bin 1; the second feeder 21 is connected with the lime bin 2; the first blanking device 11 and the second blanking device 21 are frequency conversion blanking devices, and the first blanking device 11 is electrically connected with the second blanking device 21.
According to one embodiment of the invention, the processing system further comprises a first scraper 12 and a second scraper 22, the first scraper 12 being connected to the first discharger 11 and the mixing conveyor 3, respectively; the second scraper 22 is connected to the second discharger 21 and the mixing conveyor 3, respectively.
According to one embodiment of the invention, the ash silo 1 comprises a storage part and a blanking part, wherein the blanking part is provided with a cone.
According to one embodiment of the invention, the treatment system further comprises a nitrogen fluidizing facility 13, and the nitrogen fluidizing facility 13 is installed in the blanking part.
According to an embodiment of the present invention, the processing system further includes an oscillator 14, and the oscillator 14 is installed in the storage portion.
According to an embodiment of the invention, the processing system further comprises a vibrating screen 5 and a bucket elevator 6, wherein the vibrating screen 5 is connected with the pressing machine 4 and is used for screening the material blocks to obtain oversize materials and undersize powder; the bucket elevator 6 is respectively connected with the vibrating screen 5 and the stirring conveyor 3 and is used for conveying the undersize powder to the stirring conveyor 3 for remixing.
According to one embodiment of the invention, the treatment system further comprises a dust removal system 15 and a CO acousto-optic alarm inspection tester 16, wherein the dust removal system 15 is connected with the purified ash bin 1 and is used for replacing carbon monoxide in the high-temperature purified ash; the CO acousto-optic alarm inspection tester 16 is respectively connected with the ash purification bin 1 and the dust removal system 15, and is used for monitoring the concentration of carbon monoxide in the ash purification bin 1 and transmitting a detection result to the dust removal system 15.
According to one embodiment of the invention, the stirring conveyor 3 adopts a double-helix stirring conveyor 3, and the pressing machine 4 is a ball press machine.
According to another aspect of the invention, a high-temperature purification ash treatment method for a calcium carbide furnace is provided, which comprises a first step S1 of replacing carbon monoxide in the high-temperature purification ash; the second step S2, mixing the high-temperature purified ash with lime powder to obtain a mixed material; in the third step S3, the mixed material is pressed to obtain a material block.
According to an embodiment of the present invention, the processing method further comprises sieving the material block to obtain oversize material and undersize powder; the undersize powder is conveyed to the mixing conveyor 3 for remixing.
According to one embodiment of the invention, the material block of the high-temperature purified ash of the calcium carbide furnace is prepared by adopting the treatment method.
According to the invention, a certain amount of lime powder is added into the high-temperature purified ash, and the lime powder is used as a binder and a flame retardant to be uniformly mixed in the high-temperature purified ash to form a mixed material, and the mixed material can be pressed into a fixed shape with good stability. The obtained material blocks can be used as raw materials of cement plants, can be used for sintering to produce calcium oxide and the like, can be safely transported, realize the harmless treatment of high-temperature purified ash, can be matched with various existing devices and processes, and has strong universality.
In the invention, the first feeder and the second feeder adopt variable frequency feeders, the ratio of purified lime and lime powder can be accurately controlled, and in addition, the control is convenient when the vehicle needs to be stopped in an emergency. The nitrogen fluidization facility and the oscillator are arranged, so that the purified ash bin is stable in discharging. Adopt ball press machine to make the mixing material suppression spherical, further solve the problem of the spontaneous combustion that takes place easily when contacting with the air, dust pelletizing system and CO audible and visual alarm detector's setting has guaranteed the safety of equipment operation.
Drawings
FIG. 1 is a schematic view of a high-temperature ash purification treatment system for a calcium carbide furnace;
FIG. 2 is a schematic view of a first downer and a second downer;
fig. 3 is a schematic view of a first scraper and a second scraper;
FIG. 4 is a schematic view of a clean ash silo with nitrogen fluidization facilities connected thereto;
FIG. 5 is a schematic view of an ash melting bin with an oscillator connected thereto;
FIG. 6 is a schematic view of a processing system including a shaker and a bucket elevator;
FIG. 7 is a schematic view of a clean ash bin with a dust removal system attached; and
FIG. 8 is a schematic view of the steps of a method for treating high-temperature ash in a calcium carbide furnace.
Detailed Description
In the following detailed description of the preferred embodiments of the invention, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration, specific features of the invention, such that the advantages and features of the invention may be more readily understood and appreciated. The following description is an embodiment of the claimed invention, and other embodiments related to the claims not specifically described also fall within the scope of the claims.
FIG. 1 shows a schematic diagram of a high-temperature ash purification treatment system of a calcium carbide furnace.
As shown in fig. 1, a high-temperature purified ash treatment system for a calcium carbide furnace comprises a purified ash bin 1, a lime bin 2, a stirring conveyor 3 and a pressing machine 4, wherein the purified ash bin 1 is used for containing high-temperature purified ash of the calcium carbide furnace; the lime bin 2 is used for containing lime powder; the stirring conveyor 3 is respectively connected with the purification ash bin 1 and the lime bin 2, and is used for mixing high-temperature purification ash with lime powder to obtain a mixed material, and conveying the mixed material to the pressing machine 4; the pressing machine 4 is connected with the stirring conveyor 3 and is used for pressing the mixed materials to obtain a material block.
The lime purification bin 1 is of a closed structure and is used for receiving high-temperature purified lime of the calcium carbide furnace, the lime bin 2 is also of a closed structure, the lime in the lime bin 2 can be powder screened by raw lime, the raw material source is wide and easy to obtain, and the cost is low.
The stirring conveyor 3 is a device having a stirring and conveying function, such as a screw conveyor, and has a closed housing, so that the purified lime powder and the lime powder can be fully mixed in the conveying process. The invention preferably adopts the double-helix stirring conveyor 3, so that the materials can be stirred more uniformly.
The press 4 presses the mixture of the lime powder and the purified ash into a certain shape, which is convenient for transportation and storage.
The high-temperature purified ash has large fineness, is difficult to bond and easy to self-ignite, and contains a small amount of impurities such as carbon monoxide gas, phosphorus, sulfur and the like, so that the high-temperature purified ash is easy to self-ignite when contacting with air in the processing and transportation process. Secondly, the ash is purified at high temperature and is difficult to bond, a small amount of calcium carbide is contained, and water cannot be added as a bonding agent.
According to the invention, a certain amount of lime powder is added into the high-temperature purified ash, and the lime powder is used as a binder and a flame retardant to be uniformly mixed in the high-temperature purified ash to form a mixed material, and the mixed material can be pressed into a fixed shape with good stability. The obtained material blocks can be used as raw materials of cement plants, can be used for sintering to produce calcium oxide and the like, can be safely transported, realize the harmless treatment of high-temperature purified ash, can be matched with various existing devices and processes, and has strong universality.
Fig. 2 shows a schematic view of a first downer and a second downer.
As shown in fig. 2, the treatment system further comprises a first feeder 11 and a second feeder 21, wherein the first feeder 11 is connected with the ash bin 1; the second feeder 21 is connected with the lime bin 2; the first blanking device 11 and the second blanking device 21 are frequency conversion blanking devices, and the first blanking device 11 is electrically connected with the second blanking device 21.
The two materials of the purified lime and the lime powder are conveyed to the stirring conveyor 3 through a first blanking device 11 and a second blanking device 21 according to a certain proportion.
In the invention, the first feeder 11 and the second feeder 21 adopt variable frequency feeders, which can accurately control the ratio of purified lime and lime powder, and is convenient to control when the vehicle needs to be stopped in an emergency.
The first blanking device 11 is electrically connected with the second blanking device 21 to realize linkage control, so that the discharging actions of the first blanking device 11 and the second blanking device 21 are consistent, the fault of one part is avoided, and the discharging of the other part is continued.
Fig. 3 shows a schematic view of a first scraper and a second scraper.
As shown in fig. 3, the processing system further comprises a first scraper 12 and a second scraper 22, wherein the first scraper 12 is connected to the first discharger 11 and the mixing conveyor 3 respectively; the second scraper 22 is connected to the second discharger 21 and the mixing conveyor 3, respectively.
In addition, the scraper conveyor can be used singly or in combination, can feed materials at multiple points and discharge materials at multiple points, and is convenient for system expansion when a plurality of ash purification bins 1 exist in the invention.
As shown in fig. 3, the ash purification bin 1 includes a storage portion and a feeding portion, and the feeding portion is provided with a cone. The storage part is cylindrical, the blanking part is conical, and the discharge port is arranged at the conical top end of the blanking part. The purification ash contains powdery materials, is easy to stick to the wall and does not need to be discharged. According to the invention, the discharging part of the ash purification bin 1 is set to be conical, such as a square cone, a cone and the like, preferably conical, so that powdery materials can be conveniently discharged.
Figure 4 shows a schematic view of a clean ash silo with a nitrogen fluidisation facility attached.
As shown in fig. 4, the processing system further comprises a nitrogen fluidizing facility 13, and the nitrogen fluidizing facility 13 is installed in the blanking part.
The nitrogen fluidization sets up and is used for to the unloading portion blows nitrogen gas, blows to loose and cohere the purification ash that condenses on the toper inclined plane of unloading portion, the unloading passageway of the ash of clearance purification has further strengthened the stability of 1 unloading in purification ash bin.
Fig. 5 shows a schematic view of the ashing silo with the attached oscillator 14.
As shown in fig. 5, the processing system further includes an oscillator 14, and the oscillator 14 is installed in the storage portion.
The oscillator 14 is used for generating oscillation, and the purified ash attached to the side wall of the storage part is oscillated and falls off to enter the discharging part. The oscillator 14 is arranged to further enable the discharging of the purified ash to be smooth, so that the discharging stability of the purified ash bin 1 is enhanced.
FIG. 6 shows a schematic of a processing system including a shaker and a bucket elevator.
As shown in fig. 6, the processing system further includes a vibrating screen 5 and a bucket elevator 6, wherein the vibrating screen 5 is connected with the press 4 and is used for sieving the material blocks to obtain oversize materials and undersize powder; the bucket elevator 6 is respectively connected with the vibrating screen 5 and the stirring conveyor 3 and is used for conveying the undersize powder to the stirring conveyor 3 for remixing.
The undersize powder comprises unformed purified lime and lime powder, and can be collected and conveyed to the stirring conveyor 3 for re-stirring and extrusion molding, so that the waste of materials and the environmental pollution caused by scattering are avoided. The formed oversize can be conveyed to a cement plant or other devices for full utilization, and the problems of spontaneous combustion and dust dispersion are eliminated through the treatment of the treatment system, so that the oversize can be safely transported.
Fig. 7 shows a schematic view of a clean ash bin with a dust removal system connected thereto.
As shown in fig. 7, the processing system further includes a dust removal system 15 and a CO acousto-optic alarm inspection tester 16, wherein the dust removal system 15 is connected to the purified ash bin 1 and is used for replacing carbon monoxide in the high-temperature purified ash;
the CO acousto-optic alarm inspection tester 16 is respectively connected with the ash purification bin 1 and the dust removal system 15, and is used for monitoring the concentration of carbon monoxide in the ash purification bin 1 and transmitting the monitoring result to the dust removal system 15.
The dust removing system 15 comprises a fan and a nitrogen source, and existing or future dust removing equipment with a gas replacement function can be adopted, and the invention is not limited. The high-temperature purification ash is rich in CO, and the purification ash bin 1 is replaced by a fan in time, so that the content of carbon monoxide is reduced, the carbon monoxide is prevented from overflowing and scattering, and the safety of each device is ensured.
If the CO acousto-optic alarm inspection instrument 16 gives an alarm, the operation of subsequent equipment can be stopped, the replacement of the high-temperature purification ash bin 1 is increased, and the safety of each equipment is ensured.
According to one embodiment of the invention, the stirring conveyor 3 adopts a double-helix stirring conveyor 3, and the pressing machine 4 is a ball press machine.
The ball press machine presses the mixed material into a ball body, so that the contact area of the ball press machine and air is reduced as much as possible, and the problem of spontaneous combustion easily caused when the ball press machine is in contact with the air is further solved.
FIG. 8 shows a schematic step diagram of a high-temperature ash purification treatment method for a calcium carbide furnace.
As shown in fig. 8, a method for treating high-temperature purified ash of a calcium carbide furnace comprises a first step S1 of replacing carbon monoxide in the high-temperature purified ash; the second step S2, mixing the high-temperature purified ash with lime powder to obtain a mixed material; in the third step S3, the mixed material is pressed to obtain a material block.
Firstly, the high-temperature purified ash is rich in CO, and the bin needs to be replaced in time by a fan. A CO sound-light alarm can be added, if the CO content is high, the operation of subsequent equipment is stopped, nitrogen replacement is increased, the safe operation is ensured, and an explosion-proof type is selected for the selection of the electrical instrument. I.e. to control the CO content in the cleaned ash at a safe level.
Secondly, pure high-temperature purified ash is difficult to be pressed into spheres with good stability, and because the calcium carbide is contained, water cannot be used as a binder, a certain amount of lime powder can be added to increase the cohesiveness of the spheres, and the calcium carbide has a certain flame retardant effect.
Finally, in order to solve the spontaneous combustion phenomenon generated when the exposed part of the purified ash in the material block is contacted with the air, the material block is pressed into a sphere, so that the contact area with the air is reduced as much as possible, and the spontaneous combustion phenomenon is prevented.
According to an embodiment of the present invention, the processing method further comprises sieving the material block to obtain oversize material and undersize powder; the undersize powder is conveyed to the mixing conveyor 3 for remixing.
According to another aspect of the invention, the material block of the high-temperature purified ash of the calcium carbide furnace is prepared by adopting the treatment method.
According to the invention, a certain amount of lime powder is added into the high-temperature purified ash, and the lime powder is used as a binder and a flame retardant to be uniformly mixed in the high-temperature purified ash to form a mixed material, and the mixed material can be pressed into a fixed shape with good stability. The obtained material blocks can be used as raw materials of cement plants, can be used for sintering to produce calcium oxide and the like, can be safely transported, realize the harmless treatment of high-temperature purified ash, can be matched with various existing devices and processes, and has strong universality.
In the invention, the first feeder and the second feeder adopt variable frequency feeders, the ratio of purified lime and lime powder can be accurately controlled, and in addition, the control is convenient when the vehicle needs to be stopped in an emergency. The nitrogen fluidization facility and the oscillator are arranged, so that the purified ash bin is stable in discharging. Adopt ball press machine to make the mixing material suppression spherical, further solve the problem of the spontaneous combustion that takes place easily when contacting with the air, dust pelletizing system and CO audible and visual alarm detector's setting has guaranteed the safety of equipment operation.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (4)
1. A high-temperature ash purification treatment system of a calcium carbide furnace, which comprises an ash purification bin (1), a lime bin (2), a stirring conveyor (3) and a pressing machine (4),
the ash purification bin (1) is used for containing high-temperature purified ash of the calcium carbide furnace;
the lime bin (2) is used for containing lime powder;
the stirring conveyor (3) is provided with a closed shell, is respectively connected with the purification ash bin (1) and the lime bin (2), is used for mixing high-temperature purification ash and lime powder to obtain a mixed material, and conveys the mixed material to a pressing machine (4);
the pressing machine (4) is connected with the stirring conveyor (3) and is used for pressing the mixed materials to obtain a material block;
the lime bin is characterized by further comprising a first blanking device (11) and a second blanking device (21), wherein the first blanking device (11) is connected with the lime purification bin (1), the second blanking device (21) is connected with the lime bin (2), the first blanking device (11) and the second blanking device (21) are frequency conversion blanking devices, and the first blanking device (11) is electrically connected with the second blanking device (21) and is controlled in a linkage manner;
the device also comprises a first scraper (12) and a second scraper (22) which are provided with closed shells, wherein the first scraper (12) is respectively connected with the first blanking device (11) and the stirring conveyor (3), and the second scraper (22) is respectively connected with the second blanking device (21) and the stirring conveyor (3);
the ash purification bin (1) comprises a storage part and a feeding part, and the feeding part is conical;
the device also comprises a nitrogen fluidization facility (13) and a vibrator (14), wherein the nitrogen fluidization facility (13) is arranged at the blanking part, and the vibrator (14) is arranged at the storage part;
the pressing machine (4) is a ball pressing machine;
still include shale shaker (5) and bucket elevator (6), shale shaker (5) with briquetting machine (4) are connected, are used for the screening material piece obtains oversize thing and undersize powder, bucket elevator (6) respectively with shale shaker (5) with stirring conveyer (3) are connected, are used for with undersize powder convey to stirring conveyer (3) remix.
2. The treatment system of claim 1, further comprising a dust removal system (15) and a CO acousto-optic alarm inspection tester (16), wherein the dust removal system (15) is connected with the purified ash bin (1) and is used for replacing carbon monoxide in the high-temperature purified ash;
and the CO acousto-optic alarm inspection instrument (16) is respectively connected with the ash purification bin (1) and the dust removal system (15) and is used for monitoring the concentration of carbon monoxide in the ash purification bin (1) and transmitting a detection result to the dust removal system (15).
3. A high-temperature purification ash treatment method of a calcium carbide furnace, which adopts the high-temperature purification ash treatment system of the calcium carbide furnace in claim 1, comprises the following steps,
a first step (S1) of replacing carbon monoxide in the high-temperature purified ash in the purified ash bin (1);
a second step (S2) of conveying the high-temperature purified lime discharged from the purified lime bin (1) to the stirring conveyor (3) by using a first scraper (12) with a closed shell, conveying the lime powder discharged from the lime bin (2) to the stirring conveyor (3) by using a second scraper (22) with a closed shell, and conveying and stirring the high-temperature purified lime and the lime powder on the stirring conveyor (3) to obtain a mixed material;
wherein a first blanking device (11) is arranged between the ash purification bin (1) and the first scraper conveyor (12),
a second blanking device (21) is arranged between the lime bin (2) and the second scraper conveyor (22),
the first blanking device (11) and the second blanking device (21) are frequency conversion blanking devices, and the first blanking device (11) is electrically connected with the second blanking device (21) and controlled in a linkage manner;
the ash purification bin (1) comprises a storage part and a feeding part, and the feeding part is conical; the nitrogen fluidization facility (13) is arranged at the blanking part, and the oscillator (14) is arranged at the storage part, so that the blanking of the high-temperature purified ash is smooth;
and a third step (S3) of pressing the mixed material into a spherical shape by using a ball press machine to obtain a material block, sieving the material block by using a vibrating screen (5) to obtain oversize material and undersize powder, and conveying the undersize powder to the stirring conveyor (3) by using a bucket elevator (6) for remixing.
4. A material block of high-temperature purified ash of a calcium carbide furnace, which is prepared by the treatment method of claim 3.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2698959Y (en) * | 2004-04-09 | 2005-05-11 | 大庆油田有限责任公司 | Full automatic powder feeding and mixing device |
| CN202246782U (en) * | 2011-10-12 | 2012-05-30 | 中冶赛迪工程技术股份有限公司 | Process system for pressing dust into balls |
| CN202460506U (en) * | 2012-03-15 | 2012-10-03 | 莱芜市金石特种合金材料有限公司 | Micropower blender |
| CN103143295A (en) * | 2013-03-26 | 2013-06-12 | 内蒙古君正化工有限责任公司 | Lime briquetting production line |
| CN103759546A (en) * | 2014-01-21 | 2014-04-30 | 新疆中泰矿冶有限公司 | Calcium carbide furnace purification ash back-to-furnace combustion system |
| CN108502884A (en) * | 2018-03-23 | 2018-09-07 | 宁夏宝塔化工中心实验室(有限公司) | A method of producing the grey mix and convert calcium lime powder pressure ball molding of calcium carbide furnace of calcium carbide purification |
| CN208217902U (en) * | 2018-05-18 | 2018-12-11 | 亿利洁能股份有限公司达拉特分公司 | A kind of calcium carbide purifying and dedusting apparatus for ash |
-
2020
- 2020-04-07 CN CN202010265904.2A patent/CN111515219B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2698959Y (en) * | 2004-04-09 | 2005-05-11 | 大庆油田有限责任公司 | Full automatic powder feeding and mixing device |
| CN202246782U (en) * | 2011-10-12 | 2012-05-30 | 中冶赛迪工程技术股份有限公司 | Process system for pressing dust into balls |
| CN202460506U (en) * | 2012-03-15 | 2012-10-03 | 莱芜市金石特种合金材料有限公司 | Micropower blender |
| CN103143295A (en) * | 2013-03-26 | 2013-06-12 | 内蒙古君正化工有限责任公司 | Lime briquetting production line |
| CN103759546A (en) * | 2014-01-21 | 2014-04-30 | 新疆中泰矿冶有限公司 | Calcium carbide furnace purification ash back-to-furnace combustion system |
| CN108502884A (en) * | 2018-03-23 | 2018-09-07 | 宁夏宝塔化工中心实验室(有限公司) | A method of producing the grey mix and convert calcium lime powder pressure ball molding of calcium carbide furnace of calcium carbide purification |
| CN208217902U (en) * | 2018-05-18 | 2018-12-11 | 亿利洁能股份有限公司达拉特分公司 | A kind of calcium carbide purifying and dedusting apparatus for ash |
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Application publication date: 20200811 Assignee: Qinghai Salt Lake Haina Chemical Co.,Ltd. Assignor: QINGHAI SALT LAKE INDUSTRY Co.,Ltd. Contract record no.: X2023990000997 Denomination of invention: A high-temperature purification ash treatment system and method for calcium carbide furnace, as well as material blocks Granted publication date: 20211116 License type: Exclusive License Record date: 20240102 |
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