CN214370216U - Hazardous waste innocent treatment integrated system - Google Patents
Hazardous waste innocent treatment integrated system Download PDFInfo
- Publication number
- CN214370216U CN214370216U CN202022935540.2U CN202022935540U CN214370216U CN 214370216 U CN214370216 U CN 214370216U CN 202022935540 U CN202022935540 U CN 202022935540U CN 214370216 U CN214370216 U CN 214370216U
- Authority
- CN
- China
- Prior art keywords
- bin
- slag
- rotary kiln
- flue gas
- hazardous waste
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002920 hazardous waste Substances 0.000 title claims abstract description 40
- 239000002893 slag Substances 0.000 claims abstract description 58
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003546 flue gas Substances 0.000 claims abstract description 37
- 238000010791 quenching Methods 0.000 claims abstract description 24
- 238000002485 combustion reaction Methods 0.000 claims abstract description 22
- 239000000428 dust Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 20
- 239000002956 ash Substances 0.000 claims abstract description 19
- 239000002918 waste heat Substances 0.000 claims abstract description 19
- 230000000171 quenching effect Effects 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010881 fly ash Substances 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical group [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 5
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 3
- 239000004202 carbamide Substances 0.000 claims description 3
- 238000010531 catalytic reduction reaction Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 238000004017 vitrification Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 description 23
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 10
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 8
- 239000007787 solid Substances 0.000 description 7
- 210000004127 vitreous body Anatomy 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 2
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002801 charged material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- -1 road beds Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 231100001234 toxic pollutant Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000006276 transfer reaction Methods 0.000 description 1
- 239000010888 waste organic solvent Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Processing Of Solid Wastes (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The utility model discloses a hazardous waste harmless disposal integrated system, which comprises a rotary kiln system working section and a plasma furnace system working section; the rotary kiln system section comprises a crusher, a buffer tank, a mixer, a rotary kiln, a secondary combustion chamber, a waste heat boiler, a quench tower and a bag-type dust remover which are sequentially connected with one another; the plasma furnace system section comprises a slag bin, an ash bin, an auxiliary bin, a mixer, a plasma furnace, a slag conveyor and a vitreous slag bin; flue gas generated by the rotary kiln enters a secondary combustion chamber for secondary combustion, a waste heat boiler utilizes heat in the flue gas, a quench tower rapidly cools the flue gas, and then the flue gas is dedusted by a bag-type deduster and discharged; slag discharged by the rotary kiln is transferred to a slag bin for storage, and fly ash generated by a waste heat boiler, a quench tower and a bag-type dust remover is transferred to an ash bin for storage; mixing the raw materials of the slag bin, the ash bin and the auxiliary bin according to the proportion; then the molten slag is injected into a plasma furnace for vitrification melting to obtain glassy slag which enters a slag conveyor for water quenching.
Description
Technical Field
The utility model relates to a hazardous waste innocent treatment technical field, concretely relates to hazardous waste innocent treatment integrated system.
Background
At present, the main modes for disposing the Chinese hazardous wastes are safe landfill and incineration. The safe landfill only limits the harm of the waste to the environment within a fixed range, does not completely realize the harmlessness of the waste, and simultaneously causes a large amount of site occupation and secondary pollution problems of odor, leachate and the like. Although the incineration method can realize the reduction and the harmlessness of wastes to a certain extent, the slag and the fly ash formed by incineration are still dangerous wastes due to the containing of dioxin and furan, which are hypertoxic substances, and the flue gas discharged by incineration contains toxic pollutants such as nitrogen oxides, sulfur dioxide, hydrogen chloride and the like, so that secondary pollution is formed.
The prior art discloses a method for treating hazardous wastes, which comprises the steps of proportioning the hazardous wastes and activated carbon, feeding the mixture into a rotary kiln for roasting, and feeding the produced roasted material into a side-blown submerged combustion smelting furnace for smelting. Although the method has a simple flow, the side-blown submerged combustion smelting furnace needs to be mixed with a large amount of air. The mixed air increases the discharge amount of the flue gas from the melting furnace and also increases the chance of regeneration of substances such as dioxin and furan.
The prior art also discloses a melting disposal method of hazardous waste, which is to add the pretreated hazardous waste raw material and certain reducing agent into an oxygen-enriched side-blown melting furnace directly after proportioning. The smelting furnace also adopts a method of burning fuel and injecting oxygen to obtain heat, and because oxygen with the purity of 70 percent needs to be mixed, the production cost is higher, and the flue gas purification amount is larger.
Therefore, a hazardous waste harmless disposal integrated system is urgently needed, so that the hazardous waste reduction, the harmless treatment and the resource utilization are realized, the smoke emission is reduced, and the disposal energy consumption is reduced.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model provides a hazardous waste innocent treatment integrated system to solve the hazardous waste treatment among the prior art and can't realize hazardous waste minimizing, innoxious and resourceization simultaneously, reduce fume emission, reduce the problem of handling the energy consumption.
In order to achieve the above object, the present invention provides the following technical solutions:
according to the utility model, a hazardous waste harmless disposal integrated system is provided, which comprises a rotary kiln system working section and a plasma furnace system working section; the rotary kiln system section comprises a crusher, a buffer tank, a mixer, a rotary kiln, a secondary combustion chamber, a waste heat boiler, a quench tower and a bag-type dust remover which are sequentially connected with one another; the plasma furnace system working section comprises a slag bin, an ash bin, an auxiliary bin, a mixer, a plasma furnace, a slag conveyor and a vitreous slag bin; the waste heat boiler utilizes heat in the flue gas, the quenching tower rapidly cools the flue gas, and then the flue gas is discharged after being dedusted by the bag-type deduster;
slag discharged by the rotary kiln is transferred to the slag bin for storage, and fly ash generated by the waste heat boiler, the quenching tower and the bag-type dust remover is transferred to the ash bin for storage; the raw materials of the slag bin, the ash bin and the auxiliary bin enter a mixer according to the proportion for mixing; and the mixed raw materials are added into the plasma furnace for melting treatment, the vitreous body slag discharged from the plasma furnace enters the slag dragging machine for water quenching, and the water-quenched vitreous body slag particles are stored in the vitreous body slag bin.
Further, hazardous waste innocent treatment integrated system still includes draught fan and chimney, wherein, the draught fan with the sack cleaner is connected, will flue gas in the sack cleaner passes through the chimney is discharged.
Further, a dry type deacidification system is arranged at the front end of the bag-type dust remover, and the deacidification medium is activated carbon.
Further, the rotary kiln is in a horizontal downstream mode, and a heat source is natural gas.
Further, a denitration system is arranged at an outlet of the secondary combustion chamber.
Further, the denitration system adopts a selective non-catalytic reduction method, and the reducing agent is ammonia water or urea.
Further, the waste heat boiler is a single-drum membrane type wall boiler.
Further, a two-fluid spray gun is arranged in the quenching tower.
Furthermore, the two-fluid spray gun is made of stainless steel.
Further, the quaternary alkalinity of the raw materials of the slag bin, the ash bin and the auxiliary bin after proportioning is 0.9-1.1.
The utility model has the advantages of as follows:
the utility model adopts the integration of the rotary kiln system working section and the plasma furnace system working section into the harmless treatment integrated system of the dangerous waste, can combine the respective characteristics of the working sections, and has the advantages of more abundant types of dangerous waste treatment, more thorough treatment and very obvious reduction effect; the plasma furnace system working section can treat the ash at high temperature in an oxygen-free environment, so that secondary generation of dioxin and furan is avoided, and the treatment is thorough; all fly ash generated in the section link of the rotary kiln system is collected and treated and then is used as a raw material for the section of the plasma furnace system to be circularly treated, so that zero emission of hazardous waste treatment can be realized; the flue gas treatment cost is low; the process is relatively simple, automation is easy to realize, and the labor intensity of workers can be reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
FIG. 1 is a schematic diagram illustrating a hazardous waste innocent treatment integrated system according to an exemplary embodiment;
in the figure: 1. a crusher; 2. a buffer tank; 3. a mixer; 4. a rotary kiln; 5. a second combustion chamber; 6. a waste heat boiler; 7. a quench tower; 8. a bag-type dust collector; 9. an induced draft fan; 10. a chimney; 11. a slag bin; 12. an ash bin; 13. an auxiliary bin; 14. a mixer; 15. a plasma furnace; 16. a slag conveyor; 17. a vitreous slag bin; 18. an automobile.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
According to the embodiment of the utility model, a hazardous waste harmless disposal integrated system is provided, as shown in fig. 1, comprising a rotary kiln system working section and a plasma furnace system working section; the rotary kiln system working section comprises a crusher 1, a buffer tank 2, a mixer 3, a rotary kiln 4, a secondary combustion chamber 5, a waste heat boiler 6, a quench tower 7 and a bag-type dust remover 8 which are sequentially connected with one another; the plasma furnace system working section comprises a slag bin 11, an ash bin 12, an auxiliary bin 13, a mixer 14, a plasma furnace 15, a slag dragging machine 16 and a vitreous slag bin 17; wherein, the flue gas generated by the rotary kiln 4 enters the secondary combustion chamber 5 for secondary combustion, the waste heat boiler 6 utilizes the heat in the flue gas, the quenching tower 7 rapidly cools the flue gas, and then the flue gas is discharged after being dedusted by the bag-type deduster 8;
slag discharged by the rotary kiln 4 is transported to the slag bin 11 for storage, and fly ash generated by the waste heat boiler 6, the quenching tower 7 and the bag-type dust remover 8 is transported to the ash bin 12 for storage; the raw materials of the slag bin 11, the ash bin 12 and the auxiliary material bin 13 enter a mixer 14 according to the proportion for mixing; the mixed raw materials are added into the plasma furnace 15 for melting treatment, the vitreous body slag discharged from the plasma furnace 15 enters the slag dragging machine 16 for water quenching, and the water quenched vitreous body slag particles are stored in the vitreous body slag bin 17.
The utility model adopts the integration of the rotary kiln system working section and the plasma furnace system working section into the harmless treatment integrated system of the dangerous waste, can combine the respective characteristics of the working sections, and has the advantages of more abundant types of dangerous waste treatment, more thorough treatment and very obvious reduction effect; the plasma furnace system working section can treat the ash at high temperature in an oxygen-free environment, so that secondary generation of dioxin and furan is avoided, and the treatment is thorough; all fly ash generated in the section link of the rotary kiln system is collected and treated and then is used as a raw material for the section of the plasma furnace system to be circularly treated, so that zero emission of hazardous waste treatment can be realized; the flue gas treatment cost is low; the process is relatively simple, automation is easy to realize, and the labor intensity of workers can be reduced.
The crusher 1, the buffer tank 2 and the mixer 3 are all in a plurality of numbers, are used for storing and primarily treating solid and semi-solid hazardous wastes, can treat the irregular large-size solid hazardous wastes into proper granularity, can crush the semi-solid hazardous wastes to a specified size, and then enter the rotary kiln 4.
In some optional embodiments, the hazardous waste harmless disposal integrated system further comprises an induced draft fan 9 and a chimney 10, wherein the induced draft fan 9 is connected with the bag-type dust remover 8, and the flue gas in the bag-type dust remover 8 is discharged through the chimney 10.
In some optional embodiments, the front end of the bag-type dust collector 8 is provided with a dry deacidification system, and the deacidification medium is activated carbon. The residual amount of dioxin can be greatly reduced by utilizing the adsorbability of the activated carbon. The bag-type dust collector 8 has very high dust collection efficiency which can reach more than 99.9 percent, and can effectively collect submicron particles. The rear end of the bag-type dust collector 8 is provided with a wet deacidification system which can effectively remove CO2、SO2And HCl. The acidic substance contacts with the sprayed ammonia water to carry out heat and mass transfer reaction, the water content of the ammonia water is heated and gasified by the flue gas, and meanwhile, the harmful gas in the flue gas is mixed with NH3Salts which produce a solid state upon neutralization are periodically disposed. The flue gas treated by the measures completely reaches the emission standard, and is finally pumped out by the induced draft fan 9 and is diffused by the chimney 10.
In alternative embodiments, the rotary kiln 4 is in the form of a horizontal co-current flow and the heat source is natural gas. The flue gas generated by the rotary kiln 4 enters the secondary combustion chamber 5 for secondary combustion, the residence time of the flue gas is more than 2 seconds, and harmful components are thoroughly destroyed.
In some optional embodiments, a denitration system is arranged at the outlet of the secondary combustion chamber 5. The denitration system adopts a selective non-catalytic reduction method, and the reducing agent is ammonia water or urea. Has the characteristics of small occupied area and simple process.
In some alternative embodiments, the waste heat boiler 6 is a single drum membrane wall boiler. The boiler is a waste heat furnace which does not need to be stopped for cleaning ash and has long continuous operation time.
In some alternative embodiments, two fluid injection lances are provided in the quench tower 7. The two-fluid spray gun is made of stainless steel. The quenching tower 7 can cool the flue gas rapidly to reduce the generation of dioxin through conversion again. The two-fluid spray gun can atomize the alkali liquor by compressed air. The spray gun is made of corrosion-resistant and high-temperature-resistant stainless steel and is protected by a water jacket.
In some optional embodiments, the quaternary alkalinity of the raw materials in the slag bin 11, the ash bin 12 and the auxiliary bin 13 after proportioning is 0.9-1.1. According to the characteristics of slag and fly ash, an auxiliary bin 13 is arranged, when the plasma furnace 15 works, the plasma furnace utilizes a graphite electrode which is inserted into charged materials and ionizes air to obtain the heating mode of plasma electric arc to obtain high temperature, and the core temperature can reach more than 3000 ℃. The plasma furnace 15 is continuously charged, slag is periodically discharged, the discharged slag enters a slag conveyor 16 for water quenching, small particles of water-quenched vitreous slag are stored in a vitreous slag bin 17, and the small particles are transported out by an automobile 18 for recycling treatment.
The hazardous waste harmless disposal integrated system can be used for treating HW02 medical waste, HW03 waste medicines and medicines, HW06 waste organic solvents and organic solvent-containing waste, HW08 waste mineral oil and mineral oil-containing waste, HW09 oil/water, hydrocarbon/water mixture or emulsion, HW11 rectification residue, HW12 dye and coating waste, HW13 organic resin waste, HW16 photosensitive material waste, HW17 surface treatment waste, HW18 incineration disposal residue, HW22 copper-containing waste, HW23 zinc-containing waste, HW33 inorganic cyanide waste, HW39 phenol-containing waste, HW46 nickel-containing waste, HW49 and waste thereof, HW50 waste catalysts and 18 types in total.
The specific implementation mode is as follows:
crushing solid and semi-solid hazardous wastes, pretreating the liquid hazardous wastes, and proportionally adding into a rotary kiln 4. The heat value of the raw materials in the rotary kiln 4 after compatibility is 3000-4000 kcal;
the temperature of the rotary kiln 4 is controlled to be 1000-1200 ℃, the pyrolysis time of the hazardous waste is not less than 30 minutes, the burnout rate is more than 99 percent, and the volume of the hazardous waste pyrolyzed by the rotary kiln 4 is reduced by more than 80 percent;
the flue gas of the rotary kiln 4 enters a secondary combustion chamber 5 for continuous combustion, and the temperature of the secondary combustion chamber 5 is controlled at 1000-1100 ℃; flue gas out of the secondary combustion chamber 5 enters a waste heat boiler 6 for heat exchange through denitration treatment, so that the economy of the system is improved; the temperature of the flue gas discharged from the waste heat boiler 6 is about 500 ℃, and the flue gas is cooled to 200 ℃ through a quenching tower 7 to prevent dioxin from being separated out; the flue gas discharged from the quenching tower 7 is deacidified by a dry method and then enters a bag-type dust collector 8 to collect particles; the flue gas discharged from the bag-type dust collector 8 is deacidified by a wet method and reaches the standard, and is discharged from a chimney 10 through a draught fan 9.
The fly ash generated by the slag of the rotary kiln 4 and other links is collected and transferred to the plasma furnace system working section, the material loading of the plasma furnace system working section is reasonably proportioned according to the components of the raw materials, and the quaternary alkalinity range of the proportioned raw materials is 0.9-1.1. Before the slag of the rotary kiln 4 is proportioned, a magnetic separator can be selected to further screen ferromagnetic materials in the slag of the rotary kiln 4, so that the resource utilization rate of raw materials is improved.
The proportioned raw materials are fully mixed by a mixer 14 and then enter a plasma furnace 15. The plasma furnace 15 adopted by the process can vitrify the raw materials under the condition of isolating air, and the temperature of a vitrification melting zone is controlled at 1400-1600 ℃. Since no air participates in heating and combustion, the plasma furnace 15 can completely prevent the generation of harmful substances such as dioxin, furan and the like. A small amount of flue gas generated by the plasma furnace 15 can be returned to the second combustion chamber 5 for continuous treatment, and the flue gas amount is extremely small, so that the flue gas treatment cost can be effectively reduced by the mode.
The slag discharged from the plasma furnace 15 is in a glass state, the glass slag can effectively solidify heavy metals by utilizing the molecular grid structure of silicate, and the leaching toxicity completely meets the standard requirement. The vitreous slag can be recycled, and is used in industries of cement raw materials, road beds, mineral wool, even microcrystalline glass and the like.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A hazardous waste harmless disposal integrated system is characterized by comprising a rotary kiln system working section and a plasma furnace system working section; the rotary kiln system section comprises a crusher, a buffer tank, a mixer, a rotary kiln, a secondary combustion chamber, a waste heat boiler, a quench tower and a bag-type dust remover which are sequentially connected with one another; the plasma furnace system working section comprises a slag bin, an ash bin, an auxiliary bin, a mixer, a plasma furnace, a slag conveyor and a vitreous slag bin; the waste heat boiler utilizes heat in the flue gas, the quenching tower rapidly cools the flue gas, and then the flue gas is discharged after being dedusted by the bag-type deduster;
slag discharged by the rotary kiln is transferred to the slag bin for storage, and fly ash generated by the waste heat boiler, the quenching tower and the bag-type dust remover is transferred to the ash bin for storage; the raw materials of the slag bin, the ash bin and the auxiliary bin enter a mixer according to the proportion for mixing; and the mixed raw materials are added into the plasma furnace for melting treatment, the glass-state slag discharged from the plasma furnace enters the slag dragging machine for water quenching, and the water-quenched glass-state slag particles are stored in the glass-state slag bin.
2. The hazardous waste harmless disposal integrated system according to claim 1, further comprising an induced draft fan and a chimney, wherein the induced draft fan is connected with the bag-type dust remover and discharges the flue gas in the bag-type dust remover through the chimney.
3. The hazardous waste harmless disposal integrated system according to claim 1, wherein a dry deacidification system is arranged at the front end of the bag-type dust remover, and the deacidification medium is activated carbon.
4. The hazardous waste integrated system for innocent treatment according to claim 1, wherein the rotary kiln is in a horizontal concurrent form and the heat source is natural gas.
5. The hazardous waste harmless disposal integrated system according to claim 1, wherein a denitration system is provided at an outlet of said secondary combustion chamber.
6. The hazardous waste harmless disposal integrated system according to claim 5, wherein the denitration system adopts a selective non-catalytic reduction method, and the reducing agent is ammonia water or urea.
7. The integrated hazardous waste hazard treatment system of claim 1, wherein the waste heat boiler is a single drum membrane wall boiler.
8. The hazardous waste integrated harmless disposal system of claim 1, wherein a two-fluid spray gun is provided in said quenching tower.
9. The integrated hazardous waste hazard free disposal system of claim 8, wherein the two fluid spray guns are made of stainless steel.
10. The hazardous waste harmless disposal integrated system according to claim 1, wherein the quaternary alkalinity of the raw materials of the slag bin, the ash bin and the auxiliary bin after proportioning is 0.9-1.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022935540.2U CN214370216U (en) | 2020-12-09 | 2020-12-09 | Hazardous waste innocent treatment integrated system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022935540.2U CN214370216U (en) | 2020-12-09 | 2020-12-09 | Hazardous waste innocent treatment integrated system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214370216U true CN214370216U (en) | 2021-10-08 |
Family
ID=77983234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022935540.2U Expired - Fee Related CN214370216U (en) | 2020-12-09 | 2020-12-09 | Hazardous waste innocent treatment integrated system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214370216U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116532468A (en) * | 2023-06-25 | 2023-08-04 | 北京中科润宇环保科技股份有限公司 | Refuse incineration fly ash tempering method, refuse incineration fly ash tempering system, electronic equipment and medium |
-
2020
- 2020-12-09 CN CN202022935540.2U patent/CN214370216U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116532468A (en) * | 2023-06-25 | 2023-08-04 | 北京中科润宇环保科技股份有限公司 | Refuse incineration fly ash tempering method, refuse incineration fly ash tempering system, electronic equipment and medium |
| CN116532468B (en) * | 2023-06-25 | 2024-01-30 | 北京中科润宇环保科技股份有限公司 | Refuse incineration fly ash tempering method, refuse incineration fly ash tempering system, electronic equipment and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112628747A (en) | Hazardous waste innocent treatment integrated system | |
| CN112460604A (en) | Hazardous waste incineration flue gas treatment system and hazardous waste incineration flue gas treatment method | |
| CN102944018B (en) | A kind of dangerous waste incineration and afterheat generating system thereof | |
| CN109539272A (en) | The high-temperature plasma recycling recovery process of waste containing chlorine and system | |
| CN202141056U (en) | Integration system of hazardous waste burning and burning fly ash melting and solidification | |
| CN102221211A (en) | Melting solidification integrated method and system for incineration of hazardous wastes and incinerated fly ash | |
| CN113182311A (en) | Hazardous waste treatment system and method based on medium-temperature pyrolysis and plasma high-temperature melting | |
| CN113310056A (en) | Hazardous waste incineration treatment system and method | |
| CN111306549A (en) | Green and efficient rotary kiln incineration treatment method for hazardous wastes based on oxygen-enriched air supply of secondary combustion chamber | |
| CN110470141A (en) | It is a kind of to utilize semi-coke harmless treatment garbage flying ash apparatus and method | |
| CN112682796A (en) | Harmless treatment system and method for wastes | |
| CN113915619A (en) | Waste fan blade treatment device for rotary kiln and plasma melting furnace | |
| CN214370216U (en) | Hazardous waste innocent treatment integrated system | |
| CN111928263A (en) | System for utilize rotary kiln to burn burning furnace and handle hazardous waste | |
| CN113587117B (en) | System and method for innocent treatment of sludge | |
| CN109226186B (en) | Plasma waste treatment method and system | |
| CN113503543A (en) | Online disposal system and process for garbage fly ash and garbage leachate | |
| CN213956022U (en) | Rotary kiln flue gas treatment system | |
| CN219976435U (en) | Medical waste treatment system of plasma fusion coupling incinerator | |
| CN112792091A (en) | Harmless treatment system and method for resource utilization of garbage fly ash | |
| CN111197754A (en) | Green high-efficient hazardous waste rotary kiln incineration processing system based on oxygen-enriched air supply of secondary combustion chamber | |
| CN104390220B (en) | Chemical engineering sludge treatment method and equipment system | |
| CN211232880U (en) | High, low calorific value hazardous waste burns melting innocent treatment system in coordination | |
| CN214791158U (en) | Useless processing system of fluorine-containing danger | |
| CN215523315U (en) | Hazardous waste incineration disposal system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211008 |