CN212319724U - Boiler combustion solid waste treatment device based on plasma technology - Google Patents
Boiler combustion solid waste treatment device based on plasma technology Download PDFInfo
- Publication number
- CN212319724U CN212319724U CN202020039950.6U CN202020039950U CN212319724U CN 212319724 U CN212319724 U CN 212319724U CN 202020039950 U CN202020039950 U CN 202020039950U CN 212319724 U CN212319724 U CN 212319724U
- Authority
- CN
- China
- Prior art keywords
- plasma
- treatment device
- boiler
- solid waste
- processing apparatus
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 238000005516 engineering process Methods 0.000 title claims description 21
- 238000009270 solid waste treatment Methods 0.000 title claims description 12
- 239000002956 ash Substances 0.000 claims abstract description 49
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 26
- 238000012545 processing Methods 0.000 claims abstract description 26
- 239000002910 solid waste Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 21
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 15
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 15
- 235000002918 Fraxinus excelsior Nutrition 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 69
- 239000000428 dust Substances 0.000 claims description 34
- 238000001816 cooling Methods 0.000 claims description 28
- 239000002918 waste heat Substances 0.000 claims description 22
- 238000011084 recovery Methods 0.000 claims description 20
- 238000009832 plasma treatment Methods 0.000 claims description 18
- 239000002893 slag Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000007787 solid Substances 0.000 claims description 13
- 239000003245 coal Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 11
- 238000010791 quenching Methods 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 7
- 230000007306 turnover Effects 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000013049 sediment Substances 0.000 claims 2
- 239000002699 waste material Substances 0.000 abstract description 22
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 125000004122 cyclic group Chemical group 0.000 abstract description 2
- 230000008929 regeneration Effects 0.000 abstract description 2
- 238000011069 regeneration method Methods 0.000 abstract description 2
- 210000002381 plasma Anatomy 0.000 description 45
- 239000000463 material Substances 0.000 description 9
- 239000007921 spray Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 7
- 238000002309 gasification Methods 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 7
- 238000000197 pyrolysis Methods 0.000 description 7
- 230000000171 quenching effect Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- -1 polypropylene Polymers 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000446 fuel Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 239000000178 monomer Substances 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000006060 molten glass Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 4
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 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 1
- 239000005997 Calcium carbide Substances 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005495 cold plasma Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011268 retreatment Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 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 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Abstract
The utility model discloses a boiler combustion solid waste processing apparatus based on plasma technique in waste treatment field, including rubbish pretreatment device, plasma processing apparatus, boiler, ashes processing apparatus and tail gas processing apparatus, plasma processing apparatus inputs the solid waste after the pretreatment into plasma processing apparatus in, synthesis gas and ashes that plasma processing apparatus will produce are carried respectively to boiler and ashes processing apparatus in, the boiler still connects tail gas processing apparatus can not produce secondary pollution source, and the treatment thing can be produced new economic benefits after the recycle, also be convenient for the cyclic regeneration of resource when the environmental protection, have huge social economic value and commercial use prospect.
Description
Technical Field
The utility model relates to a waste treatment technical field specifically is a boiler burning solid waste processing apparatus based on plasma technique.
Background
The object to be treated in the waste treatment industry is generally solid waste, and the treatment means is not limited to physical methods and chemical methods, wherein the physical methods adopt methods such as crushing, compression, drying, evaporation, incineration and the like, and the chemical methods adopt methods such as oxidation, digestive decomposition, absorption and the like, so that the volume of the solid waste is reduced, and natural purification is accelerated. And the waste such as waste liquid and waste gas needs to be pretreated, and solid particles in the waste need to be separated out for physical or chemical treatment.
After the conventional waste is treated, because of insufficient temperature or special properties of the waste, the conditions of incomplete incineration, insufficient dissolution and the like are caused, and partial residue which cannot be treated is generally left. The residue produced by incomplete treatment often has certain pollution components, secondary pollution is caused to the environment, and even the environment is permanently damaged because the residue cannot be naturally degraded further. The residues need special treatment before being poured and buried, otherwise, the environmental pollution is inevitably caused. The process of retreatment or purification needs to invest additional equipment and resources, thus indirectly increasing the treatment cost; harmful substances contained in the residue not only pollute the environment, but also easily affect the health of human bodies through various ways.
Plasma is a fourth state of matter existence, with all its electro-and electro-magnetic properties, and behaves in many ways differently from the commonly found solids, liquids and gases. Plasma can be classified into high-temperature plasma and low-temperature plasma according to temperature and electron density. Low temperature plasmas are further classified into thermal plasmas and cold plasmas. Low temperature plasmas can accomplish many things that are difficult to do with common gases. For example, many endothermic chemical reactions may be carried out using high temperature, high density thermal plasma, and various materials may also be heated or melted. Thermal plasma has been widely used in numerous industrial sectors and laboratories for machining (welding, cutting, spraying, etc.), metallurgy (melting and remelting of metals, heat preservation, new smelting processes, etc.), chemical industry (titanium dioxide production, acetylene production, nitrogen fixation from air, etc.), aerospace (rail gun, ablation experiments of thermal protective materials, material evaluation experiments, high temperature gas dynamics experiments, etc.), materials (preparation of ultrafine and ultrapure material powders, preparation of synthetic materials, etc.), electric light sources, etc.
With the implementation of the strictest garbage classification standard in Shanghai in 7 months in 2019, the nation requires that 46 major cities to be tested in advance are basically built into a garbage classification treatment system by the end of 2020. The garbage classification is significant for garbage treatment, and dry garbage enters a household garbage incineration power plant for incineration power generation disposal in the treatment process of the classified garbage; wet garbage enters a kitchen garbage treatment plant, after anaerobic fermentation, biogas is used for power generation, and residues are used for incineration; the harmful garbage enters a hazardous waste treatment plant for treatment or enters a hazardous waste landfill for treatment; the garbage can be recycled for resource recycling disposal. When the classified dry garbage is incinerated, the heat productivity is obviously increased, and the combustion treatment of the classified dry garbage in an incinerator is more facilitated.
The garbage gasification treatment technology is an efficient and environment-friendly garbage treatment mode, is a potential treatment mode, and is particularly widely applied to the field of dangerous waste treatment. However, the current garbage gasification treatment technology usually utilizes natural gas, petroleum or pure oxygen to increase the garbage gasification rate so as to achieve the purpose of complete gasification of the garbage.
Based on this, the utility model designs a boiler burning solid waste processing apparatus based on plasma technique, utilizes the plasma technique to open up a new way for the fixed waste material innoxious, minimizing of boiler and resourceful treatment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a boiler burning solid waste processing apparatus based on plasma technique to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a boiler combustion solid waste treatment device based on a plasma technology comprises a garbage pretreatment device, a plasma treatment device, a boiler, an ash treatment device and a tail gas treatment device, wherein the plasma treatment device inputs pretreated solid waste into the plasma treatment device, the plasma treatment device respectively conveys generated synthesis gas and ash into the boiler and the ash treatment device, and the boiler is further connected with the tail gas treatment device.
Preferably, the garbage pretreatment device comprises a turnover box, a lifter, a powerful crusher and a screw conveyer, solid waste is loaded into the turnover box and is conveyed into the powerful crusher through the lifter, and an inlet of the screw conveyer is connected with an outlet of the powerful crusher.
Preferably, plasma processing apparatus is including the dry zone and the burning zone that are connected, the one end that burning zone was kept away from to the dry zone is equipped with synthesis gas export and feed inlet, the synthesis gas export with tail gas processing apparatus's entrance point is connected, the equipartition has a plurality of plasma guns on the inner wall in dry zone and burning zone, the one end that dry zone was kept away from to the burning zone is equipped with air inlet and ashes fill, the bottom of ashes fill is equipped with the ashes export, still install the control valve on the ashes fill.
Preferably, the ash processing device comprises a cooling tower, the cooling tower is sequentially connected with a first waste heat recovery device and an ash outlet through an ash pipe, a spray pipe is arranged at the top of an inner cavity of the cooling tower, a water-slag separation plate is arranged below the spray pipe in the inner cavity of the cooling tower, and the bottom end of the water-slag separation plate is communicated with a slag outlet at the bottom of the outer wall of the cooling tower.
Preferably, the bottom of the inner cavity of the cooling tower is positioned below the water-slag separation plate and is provided with a heat exchanger, the outside of the cooling tower is connected to the outlet end of a water pump through a circulating pipe, and the inlet end of the water pump is connected to the bottom of the inner cavity of the cooling tower through a circulating pipe.
Preferably, the tail gas processing apparatus includes the gas pipeline, through the after-combustion chamber connects gradually waste heat recovery device two, deacidification quench tower, filter equipment, dust collector one, dust collector two, denitrification facility, chimney and draught fan, also install the plasma rifle in the gas pipeline.
Preferably, the inside of the filter device is provided with activated carbon and slaked lime, the first dust removal device is a baffle plate gravity dust removal device, the second dust removal device is a cloth bag dust removal device, the first dust removal device comprises baffle plates which are arranged on the inner wall of the first dust removal device in a staggered mode, and the bottom of the first dust removal device is provided with an ash outlet.
Preferably, the boiler comprises a hearth and a pulverized coal burner, the synthesis gas outlet is connected with a gas-solid separator through a gas pipeline, and the gas-solid separator is respectively connected with the hearth and the pulverized coal burner through two conveying pipelines.
A boiler combustion solid waste treatment process based on a plasma technology specifically comprises the following steps:
s1: the solid waste materials of the boilers to be treated are put into a turnover box and are sent into a powerful crusher through a lifter, and after being crushed in the powerful crusher, the solid waste materials are sent into a plasma treatment device by a screw conveyor for waste treatment;
s2: sending the pretreated crushed solid waste into a plasma treatment device from a feed inlet, flowing to an incineration zone along a drying zone, drying and incinerating under the action of a plasma gun, introducing air through an air inlet, so that high-temperature synthesis gas generated by the solid waste enters a tail gas treatment device from a synthesis gas outlet under the action of air, and collecting generated ash through an ash bucket;
s3: the high-temperature synthesis gas entering the tail gas treatment device flows along a gas pipeline, secondary combustion is carried out through a plasma gun in the secondary combustion chamber, then waste heat recovery is carried out through a waste heat recovery device II, then the waste gas subjected to waste heat recovery is subjected to deacidification, dedusting and denitration treatment through an acid removal quenching tower, a filtering device, a dedusting device I, a dedusting device II and a denitration device in sequence, and finally generated middle-low temperature tail gas is discharged from a chimney under the action of a draught fan;
s4: the dust discharged from the ash outlet is introduced into the cooling tower through the ash pipe and the first waste heat recovery device, the ash is cooled into solid metal and molten glass through the spray pipe, and then the solid metal and the molten glass are recovered through the slag outlet;
s5: and liquid passing through the water-slag separation plate exchanges heat through the heat exchanger, and cooling water after heat exchange is conveyed to the spray pipe through the water pump and the circulating pipe to be recycled, wherein waste heat recovered by the waste heat recovery device II, the waste heat recovery device I and the heat exchanger is conveyed into the boiler through pipelines.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model overcomes the waste type is single, handle not thorough not enough in traditional technical treatment, can not produce secondary pollution source, and the thing of handling can be produced new economic benefits after the recycle, also be convenient for the cyclic regeneration utilization of resource when the environmental protection, has huge social and economic value and commercial use prospect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the garbage pre-treatment device of the present invention;
FIG. 3 is a schematic structural view of a plasma treatment device and a tail gas treatment device according to the present invention;
FIG. 4 is a schematic view of the structure of the slag treatment apparatus of the present invention;
fig. 5 is a schematic structural view of the boiler of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a garbage pretreatment device; 101. a turnover box; 102. a hoist; 103. a powerful crusher; 104. a screw conveyor; 2. a plasma processing apparatus; 201. a syngas outlet; 202. a feed inlet; 203. a drying zone; 204. an incineration zone; 205. a plasma gun; 206. an air inlet; 207. a control valve; 208. an ash hopper; 209. an ash outlet; 3. a boiler; 301. a hearth; 302. a pulverized coal burner; 303. a gas-solid separator; 304. a delivery line; 4. an ash treatment device; 401. an ash pipe; 402. a first waste heat recovery device; 403. a cooling tower; 404. a shower pipe; 405. a circulation pipe; 406. a water pump; 407. a water-slag separating plate; 408. a slag outlet; 409. a heat exchanger; 5. a tail gas treatment device; 501. a secondary combustion chamber; 502. a second waste heat recovery device; 503. a deacidification quench tower; 504. a filtration device; 505. a first dust removal device; 5051. a baffle plate; 5052. an ash outlet; 506. a second dust removal device; 507. a denitration device; 508. a chimney; 509. an induced draft fan; 510. a gas pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example 1
Referring to fig. 1-5, the present invention provides a technical solution: a boiler combustion solid waste treatment device based on a plasma technology comprises a waste pretreatment device 1, a plasma treatment device 2, a boiler 3, an ash treatment device 4 and a tail gas treatment device 5, wherein the plasma treatment device 2 inputs pretreated solid waste into the plasma treatment device 2, the plasma treatment device 2 respectively conveys generated synthesis gas and ash into the boiler 3 and the ash treatment device 4, and the boiler 3 is further connected with the tail gas treatment device 5.
In this embodiment, the garbage pretreatment apparatus 1 includes a container 101, a lifter 102, a powerful crusher 103, and a screw conveyor 104, solid waste is loaded into the container 101 and is fed into the powerful crusher 103 by the lifter 102, and an inlet of the screw conveyor 104 is connected to an outlet of the powerful crusher 103.
In this embodiment, the plasma processing apparatus 2 includes a drying region 203 and an incineration region 204 connected to each other, one end of the drying region 203, which is far away from the incineration region 204, is provided with a syngas outlet 201 and a feed inlet 202, the syngas outlet 201 is connected to an inlet end of the tail gas processing apparatus 5, a plurality of plasma guns 205 are uniformly distributed on inner walls of the drying region 203 and the incineration region 204, one end of the incineration region 204, which is far away from the drying region 203, is provided with an air inlet 206 and an ash bucket 208, a bottom end of the ash bucket 208 is provided with an ash outlet 209, and the ash bucket 208 is further provided with a control valve 207.
In this embodiment, the ash processing device 4 includes a cooling tower 403, the cooling tower 403 is sequentially connected with a first waste heat recovery device 402 and an ash outlet 209 through an ash pipe 401, a spray pipe 404 is disposed at the top of an inner cavity of the cooling tower 403, a water-slag separating plate 407 is disposed below the spray pipe 404 in the inner cavity of the cooling tower 403, and the bottom end of the water-slag separating plate 407 is communicated with a slag outlet 408 at the bottom of the outer wall of the cooling tower 403.
In this embodiment, a heat exchanger 409 is installed at the bottom of the inner cavity of the cooling tower 403 below the water-slag separating plate 407, the exterior of the cooling tower 403 is connected to the outlet end of a water pump 406 through a circulating pipe 405, and the inlet end of the water pump 406 is connected to the bottom of the inner cavity of the cooling tower 403 through the circulating pipe 405.
In this embodiment, the tail gas treatment device 5 includes a gas pipeline 510, the secondary combustion chamber 501 is sequentially connected with a second waste heat recovery device 502, a deacidification quenching tower 503, a filtering device 504, a first dust removal device 505, a second dust removal device 506, a denitration device 507, a chimney 508 and an induced draft fan 509, and a plasma gun 205 is also installed in the gas pipeline 510.
In this embodiment, the inside of the filter device 504 is activated carbon and slaked lime, the first dust collector 505 is a baffle plate gravity dust collector, the second dust collector 506 is a cloth bag dust collector, the first dust collector 505 includes baffle plates 5051 arranged on the inner wall of the first dust collector 505 in a staggered manner, and the bottom of the first dust collector 505 is provided with an ash outlet 5052.
In this embodiment, as shown in fig. 5, the boiler 3 includes a furnace 301 and a pulverized coal burner 302, the syngas outlet 201 is connected to a gas-solid separator 303 through a gas pipe 510, and the gas-solid separator 303 is connected to the furnace 301 and the pulverized coal burner 302 through two conveying pipes 304. Gases such as H2, CH4, CO and the like produced by the plasma-assisted coal gasification technology are injected into a boiler furnace as reburning fuel to reduce the generated NOx. Meanwhile, the air staged combustion treatment is carried out on the main combustion area through the gas reburning technology, so that the advantages of the 2 low NOx combustion technologies of gas reburning and double-scale air staging are complemented, the effect of ultralow NOx emission is achieved, and the problem that a large amount of natural gas is needed by reburning and nitrogen reduction of the boiler is solved.
Experiments show that the maximum coal processing amount can reach 5t/h under the condition that the power of the plasma generator is 60kW, the low-energy-consumption plasma-assisted coal gasification is realized, and the method has a good industrial application prospect. According to estimation, taking a 300MW power station coal-fired boiler as an example, after a plasma coal gasification technology is adopted, the emission of nitrogen oxides at the outlet of the boiler can be reduced by more than 50 percent on the original basis, the initial investment is slightly lower than that of an SCR denitration technology, the operation cost is only half of that of the SCR, and the coal-fired boiler has good economic and environmental benefits.
Example 2
S1: the solid waste of each boiler to be treated is loaded into a turnover box 101, sent into a powerful crusher 103 through a lifter 102, crushed in the powerful crusher 103, and then sent into a plasma treatment device 2 by a screw conveyor 104 for waste treatment;
s2: sending the pretreated crushed solid waste into the plasma treatment device 2 from the feeding hole 202, flowing to the incineration zone 204 along the drying zone 203, drying and incinerating under the action of the plasma gun 205, and introducing air through the air inlet 206, so that high-temperature synthesis gas generated by the solid waste enters the tail gas treatment device 5 from the synthesis gas outlet 201 under the action of the air, and the generated ash is collected through the ash hopper 208;
s3: the high-temperature synthesis gas entering the tail gas treatment device 5 flows along a gas pipeline 510, firstly, secondary combustion is carried out through a plasma gun 205 in a secondary combustion chamber 501, then, waste heat recovery is carried out through a waste heat recovery device II 502, then, the waste gas after the waste heat recovery is sequentially subjected to acid removal, dust removal and denitration treatment through an acid removal quenching tower 503, a filtering device 504, a dust removal device I505, a dust removal device II 506 and a denitration device 507, and finally, the generated middle-low temperature tail gas is discharged from a chimney 508 under the action of an induced draft fan 509;
s4: the dust discharged from the ash outlet 209 is introduced into the cooling tower 403 through the ash pipe 401 and the first waste heat recovery device 402, the ash is cooled into solid metal and molten glass through the spray pipe 404, and then the solid metal and the molten glass are recovered through the slag outlet 408;
s5: the liquid passing through the water-slag separation plate 407 exchanges heat through a heat exchanger 409, and the cooling water after heat exchange is conveyed to a spray pipe 404 through a water pump 406 and a circulating pipe 405 to recycle a water source, wherein the waste heat recovered by the waste heat recovery device II 502, the waste heat recovery device I402 and the heat exchanger 409 is conveyed into the boiler 3 through a pipeline.
Wherein, the adoption of a quenching measure to the gas product, or different plasma atmospheres and the like have special effects on the reaction, the table 1 is the comparison of the components of the gas product obtained by pyrolyzing the tire powder under different atmosphere plasma conditions, and the table 2 compares the influence of the quenching and non-quenching measures on the components of the gas product in the process of pyrolyzing the polypropylene by using the plasma.
TABLE 1 comparison of the composition of the gas product of plasma pyrolysis of polypropylene in a water vapor and nitrogen atmosphere
TABLE 2 comparison of plasma pyrolysis plastic products under quench measures
The plasma pyrolysis of the organic solid waste basically has no pollutant emission, and the excess air coefficient of a pyrolysis system is small, so that the exhaust volume is small, and the secondary pollution to the atmospheric environment is favorably reduced; most of harmful components such as sulfur, heavy metals and the like in the solid waste are fixed in the carbon black, so that the content of pollutants such as heavy metals, dioxin and the like in the gas is low. The content of pollutant gases such as SO2, NOx and the like in the gas product is low through detection, and the calorific value is 4-7 MJ/kg. Therefore, the gas product can be directly used as low-sulfur gas fuel. Such as boiler fuel, can be used alone after separating each gas component.
Since the organic solid waste is mainly hydrocarbon, the gas product with high hydrogen content can be obtained by pyrolyzing the organic solid waste by plasma, and the gas product is a raw material for manufacturing a fuel cell, and the combination of the two technologies is the best combination for recovering polymers. Meanwhile, H2 can also be applied to chemical industry, metallurgical industry, semiconductor industry and the like.
When water vapor is added in the pyrolysis process, synthesis gas can be generated, and the application range of the product is further expanded. Table 1 compares the change in composition of the gaseous products obtained under the conditions in which water vapor participates in the reaction. Chemicals such as methanol can also be produced according to the component ratio.
If a water cooling facility is added in the reaction process, C2H2 can be obtained, and C2H2 is also an important industrial raw material and is hardly generated under the ordinary pyrolysis condition. At present, C2H2 is mainly prepared by a calcium carbide method, which not only pollutes the environment, but also wastes resources.
Table 2 compares different experimental results of pyrolyzing polyethylene and polypropylene with plasma, pyrolyzing polypropylene with high-frequency inductive coupling plasma, and using a quenching measure, the gas product is 94% of propylene monomer, a small amount of methane, etc. (the influence of working gas nitrogen is removed), and the gas product can be used as directly recovered propylene monomer. However, when polyethylene is processed by this technique, the gaseous product is a mixture of propylene monomer and ethylene monomer, and the propylene monomer content is higher than desired.
Under the action of the plasma treatment device 2, the metal and the ash form a molten liquid at the bottom of the reactor and flow out, and the organic part is gasified into gas and escapes from the top of the reactor.
The large-scale device for treating wastes by utilizing the thermal plasma technology is mainly applied to treating high-risk wastes and burning ash residues of the wastes at present, and one important reason is that toxic substances in the high-risk wastes can be thoroughly decomposed by the ultrahigh temperature of the thermal plasma. Another reason is that the disposal of high-risk wastes such as medical wastes, nuclear wastes, etc. is not greatly affected by the high cost of disposal because they have high risks that governments must dispose of. For the treatment of organic solid wastes, plasma pyrolysis is a treatment method and an efficient recycling method. While the waste is treated, petroleum products such as gas fuel, carbon black and the like are recovered, the product separation is easy, no secondary pollution is caused, and the heat energy is fully utilized. Has the advantages of volume reduction, high reduction degree, capability of obtaining energy sources and the like, and has great significance in the aspects of protecting environment and resources, promoting sustainable development and the like.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.
Claims (8)
1. The utility model provides a boiler burning solid waste processing apparatus based on plasma technique which characterized in that: the device comprises a garbage pretreatment device (1), a plasma treatment device (2), a boiler (3), an ash treatment device (4) and a tail gas treatment device (5), wherein the plasma treatment device (2) inputs pretreated solid waste into the plasma treatment device (2), the plasma treatment device (2) respectively conveys generated synthesis gas and ash into the boiler (3) and the ash treatment device (4), and the boiler (3) is further connected with the tail gas treatment device (5).
2. A boiler combustion solid waste treatment device based on plasma technology, according to claim 1, characterized in that: the garbage pretreatment device (1) comprises a turnover box (101), a lifting machine (102), a powerful crusher (103) and a screw conveyor (104), solid waste is loaded into the turnover box (101) and is conveyed into the powerful crusher (103) through the lifting machine (102), and an inlet of the screw conveyor (104) is connected with an outlet of the powerful crusher (103).
3. A boiler combustion solid waste treatment device based on plasma technology, according to claim 2, characterized in that: plasma processing apparatus (2) is including dry zone (203) and the burning zone (204) that are connected, the one end that burning zone (204) was kept away from in dry zone (203) is equipped with syngas outlet (201) and feed inlet (202), syngas outlet (201) with the entrance point of tail gas processing apparatus (5) is connected, the equipartition has a plurality of plasma guns (205) on the inner wall of dry zone (203) and burning zone (204), the one end that drying zone (203) was kept away from in burning zone (204) is equipped with air inlet (206) and ember fill (208), the bottom of ember fill (208) is equipped with ember export (209), still install control valve (207) on ember fill (208).
4. A boiler combustion solid waste treatment device based on plasma technology according to claim 3, characterized in that: ashes processing apparatus (4) include cooling tower (403), waste heat recovery device (402) and ashes export (209) are connected gradually through ashes pipe (401) in cooling tower (403), cooling tower (403) inner chamber top is equipped with shower (404), the below that the inner chamber of cooling tower (403) is located shower (404) is equipped with water sediment separate plate (407), the bottom of water sediment separate plate (407) is linked together with slag notch (408) of cooling tower (403) outer wall bottom.
5. A boiler combustion solid waste treatment device based on plasma technology according to claim 4, characterized in that: the bottom of the inner cavity of the cooling tower (403) is positioned below the water-slag separation plate (407) and is provided with a heat exchanger (409), the outside of the cooling tower (403) is connected to the outlet end of a water pump (406) through a circulating pipe (405), and the inlet end of the water pump (406) is connected to the bottom of the inner cavity of the cooling tower (403) through the circulating pipe (405).
6. A boiler combustion solid waste treatment device based on plasma technology according to claim 5, characterized in that: tail gas processing apparatus (5) include gas line (510), connect gradually waste heat recovery device two (502), deacidification quench tower (503), filter equipment (504), dust collector (505), two (506), denitrification facility (507), chimney (508) and draught fan (509) through secondary combustion chamber (501), also install plasma gun (205) in gas line (510).
7. A boiler combustion solid waste treatment device based on plasma technology according to claim 6, characterized in that: the dust collection device comprises a filtering device (504), wherein activated carbon and slaked lime are arranged in the filtering device, a first dust collection device (505) is a baffle plate gravity dust collection device, a second dust collection device (506) is a cloth bag dust collection device, the first dust collection device (505) comprises baffle plates (5051) which are arranged on the inner wall of the first dust collection device (505) in a staggered mode, and an ash outlet (5052) is formed in the bottom of the first dust collection device (505).
8. A boiler combustion solid waste treatment device based on plasma technology according to claim 6, characterized in that: the boiler (3) comprises a hearth (301) and a pulverized coal burner (302), the synthesis gas outlet (201) is connected with a gas-solid separator (303) through a gas pipeline (510), and the gas-solid separator (303) is respectively connected with the hearth (301) and the pulverized coal burner (302) through two conveying pipelines (304).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020039950.6U CN212319724U (en) | 2020-01-09 | 2020-01-09 | Boiler combustion solid waste treatment device based on plasma technology |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202020039950.6U CN212319724U (en) | 2020-01-09 | 2020-01-09 | Boiler combustion solid waste treatment device based on plasma technology |
Publications (1)
Publication Number | Publication Date |
---|---|
CN212319724U true CN212319724U (en) | 2021-01-08 |
Family
ID=74029276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202020039950.6U Expired - Fee Related CN212319724U (en) | 2020-01-09 | 2020-01-09 | Boiler combustion solid waste treatment device based on plasma technology |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN212319724U (en) |
-
2020
- 2020-01-09 CN CN202020039950.6U patent/CN212319724U/en not_active Expired - Fee Related
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2017128943A1 (en) | Anaerobic catalytic thermal cracking method for solid waste | |
CN107760338B (en) | Pyrolysis treatment process for organic solid waste | |
CN113617807B (en) | Novel waste incineration fly ash pyrolysis system and method | |
CN108840544A (en) | A kind of reclaiming industrial sludge processing method | |
CN106765142B (en) | Solid waste grading gasification system | |
CN104501171A (en) | RDF (refuse derived fuel) pyrolysis and gasification system | |
CN112961695A (en) | Solid waste anaerobic pyrolysis and high-temperature melting treatment process and system | |
CN114106858A (en) | Organic solid waste composite thermochemical treatment and utilization method | |
CN111637464A (en) | Organic hazardous waste and inorganic hazardous waste cooperative comprehensive utilization power generation system and process | |
CN106833690A (en) | A kind of moving bed solid waste segmented pyrolytic gasification technique and its system | |
CN105420504B (en) | A kind of metal solid waste recovery processing equipment | |
CN111121052A (en) | Boiler combustion solid waste treatment device based on plasma technology and process thereof | |
CN210176803U (en) | Solid waste gasification melting system | |
CN212319724U (en) | Boiler combustion solid waste treatment device based on plasma technology | |
CN204345642U (en) | Garbage derivatived fuel (RDF) pyrolysis gasification system | |
CN110699124A (en) | Method and system for organic solid waste gasification melting harmless treatment | |
CN203036646U (en) | Incineration disposal system of oily sludge | |
CN215175075U (en) | Fluid-solid coupling combustion device | |
CN108359499A (en) | Fixed-bed gasification furnace, process system and garbage gasifying method for refuse gasification | |
CN213901073U (en) | Equipment for treating solid waste and hazardous waste by fluidized bed gasification and melting | |
CN212227043U (en) | Solid hazardous waste resource utilization system | |
CN210069852U (en) | Thermal decomposition grate furnace system | |
CN208667614U (en) | Fixed-bed gasification furnace for refuse gasification and the process system for refuse gasification | |
CN206799531U (en) | A kind of moving bed solid waste segmented pyrolysis gasification system | |
CN212339256U (en) | Organic hazardous waste and inorganic hazardous waste cooperative comprehensive utilization power generation 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 |
Granted publication date: 20210108 |
|
CF01 | Termination of patent right due to non-payment of annual fee |