CN111154981B - Comprehensive recovery treatment furnace - Google Patents
Comprehensive recovery treatment furnace Download PDFInfo
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- CN111154981B CN111154981B CN202010082988.6A CN202010082988A CN111154981B CN 111154981 B CN111154981 B CN 111154981B CN 202010082988 A CN202010082988 A CN 202010082988A CN 111154981 B CN111154981 B CN 111154981B
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- 238000011084 recovery Methods 0.000 title claims abstract description 57
- 238000011282 treatment Methods 0.000 title claims abstract description 24
- 239000002893 slag Substances 0.000 claims description 34
- 238000012545 processing Methods 0.000 claims description 33
- 239000002184 metal Substances 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 12
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000004064 recycling Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000011819 refractory material Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 13
- 230000007613 environmental effect Effects 0.000 abstract description 9
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 32
- 239000002699 waste material Substances 0.000 description 22
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 18
- 239000003546 flue gas Substances 0.000 description 18
- 239000003345 natural gas Substances 0.000 description 16
- 239000007921 spray Substances 0.000 description 16
- 229910052802 copper Inorganic materials 0.000 description 14
- 239000010949 copper Substances 0.000 description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 13
- 229910052760 oxygen Inorganic materials 0.000 description 13
- 239000001301 oxygen Substances 0.000 description 13
- 150000002739 metals Chemical class 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 239000002920 hazardous waste Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000009991 scouring Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000010888 waste organic solvent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a comprehensive recovery treatment furnace, which comprises a furnace hearth, an enlarged hearth, a straight hearth, a furnace top and a flue, wherein the furnace hearth comprises a furnace hearth side wall and a furnace hearth bottom wall, the furnace hearth side wall and the furnace hearth bottom wall define a furnace hearth cavity, and a plurality of gun nozzles are arranged on the furnace hearth side wall; the expansion section hearth comprises expansion section hearth side walls, the expansion section hearth side walls define expansion section hearth chambers, the lower ends of the expansion section hearth side walls are connected with the upper ends of hearth side walls, the horizontal inner diameter size of the expansion section hearth gradually expands from bottom to top, and the expansion section hearth is divided into a first expansion section hearth and a second expansion section hearth; the straight hearth comprises a straight hearth side wall, the straight hearth side wall defines a straight hearth, and the lower end of the straight hearth side wall is connected with the upper end of the expanded section hearth side wall; the furnace roof comprises a first furnace roof and a second furnace roof, and a feed opening is arranged on the second furnace roof; the flue is arranged on the second furnace top. The comprehensive recovery treatment furnace has the advantages of high recovery treatment efficiency, good recovery treatment effect, high economy and good environmental protection effect.
Description
Technical Field
The invention relates to the technical field of metallurgical equipment, in particular to a comprehensive recovery treatment furnace.
Background
The current nonferrous metal industry advocates low-carbon economy, and develops secondary resource recovery while strengthening comprehensive utilization in the production process. The secondary resource is solid, liquid and gas waste with recycling value discharged by industrial enterprises taking mineral resources as raw materials and fuels. The comprehensive recycling of the secondary resources is enhanced, pollution produced by nonferrous metal industry is effectively reduced, and the method is an important measure for solving the problem of mineral resource shortage. At present, the technical field is usually to use a blast furnace for production, but the blast furnace has the inherent defects of low efficiency and poor environmental protection performance.
"Hazardous waste" refers to waste listed in the national hazardous waste list or identified according to the national regulatory hazardous waste identification standards and methods, having one of the hazardous characteristics of explosiveness, flammability, susceptibility to oxidation, toxicity, corrosiveness, susceptibility to infectious diseases, and the like.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention aims to provide the comprehensive recovery treatment furnace which can recover and treat secondary resources and dangerous wastes, and has the advantages of high recovery treatment efficiency, good recovery treatment effect, high economy and good environmental protection effect.
According to an embodiment of the invention, an integrated recovery processing furnace comprises:
the hearth comprises a hearth side wall and a hearth bottom wall, the hearth side wall and the hearth bottom wall jointly define a hearth cavity, and a plurality of gun nozzles are arranged on the hearth side wall;
The expansion section furnace chamber comprises an expansion section furnace chamber side wall, the expansion section furnace chamber side wall defines an expansion section furnace chamber, the lower end of the expansion section furnace chamber side wall is connected with the upper end of the furnace hearth side wall, the horizontal inner diameter size of the expansion section furnace chamber is gradually expanded from bottom to top, and the expansion section furnace chamber is divided into a first expansion section furnace chamber and a second expansion section furnace chamber which are communicated with each other in the horizontal direction;
The straight hearth comprises a straight hearth side wall, the straight hearth side wall defines a straight hearth, and the lower end of the straight hearth side wall is connected with the upper end of the expanded section hearth side wall corresponding to the second expanded section hearth;
The furnace top comprises a first furnace top covered on the top of the first expansion section furnace chamber and a second furnace top covered on the top of the straight furnace chamber, and a feed opening is formed in the second furnace top;
and the flue is vertically arranged on the second furnace top and is adjacent to the first furnace top.
According to the comprehensive recovery treatment furnace provided by the embodiment of the invention, the working process is as follows: slag formers, reducing agents and secondary resources such as copper-containing sludge, copper-containing solid waste, surface treatment materials and the like are added into the comprehensive recovery treatment furnace through a blanking port arranged on the second furnace top after being proportioned, a plurality of spray guns spray high-speed oxygen-enriched air and natural gas into a molten pool, the oxygen-enriched air and the natural gas are vigorously combusted in the molten pool to provide a heat source for melting added materials, meanwhile, the reaction atmosphere of the molten pool is controlled by controlling the input quantity of the natural gas, the reduction of valuable metals is accelerated, CO and the like which are not completely combusted in the molten pool are combusted in an expansion section furnace cavity and a straight furnace cavity, flue gas generated by combustion enters a waste heat boiler through a flue, valuable metals such as Cu, pb and the like are enriched at the bottom of a furnace cavity and are periodically recovered, and valuable metals such as Zn and the like are volatilized into the flue gas to be recovered by a flue gas system.
According to the comprehensive recovery processing furnace provided by the embodiment of the invention, the horizontal inner diameter size of the furnace chamber of the expansion section gradually expands from bottom to top, the horizontal inner diameter size of the furnace chamber of the furnace cylinder is the same as the bottom size of the furnace chamber of the expansion section, the horizontal inner diameter size of the straight furnace chamber is the same as the top size of the furnace chamber of the expansion section, the mixture added by the feed opening is melted in the furnace chamber to form a molten pool, the spray gun sprays high-speed oxygen-enriched air and natural gas into the molten pool, the oxygen-enriched air and the natural gas are vigorously combusted in the molten pool to supplement heat for the molten pool, meanwhile, the reaction atmosphere of the molten pool is controlled by controlling the input amount of the natural gas, and combustible dangerous waste, CO which is not completely combusted in the molten pool and the like are combusted in the furnace chamber of the expansion section and the straight furnace chamber, so that secondary resources and dangerous waste can fully react in the comprehensive recovery processing furnace, and recovery processing efficiency is high; valuable metals such as Cu, pb and the like are enriched at the bottom of the hearth cavity, valuable metals such as Zn and the like which are easy to volatilize are periodically recovered, enter a flue and are recovered by a flue gas system, so that the environmental pollution is reduced, and the environmental protection effect is good. In summary, the comprehensive recovery processing furnace provided by the embodiment of the invention can be used for recovering and processing the secondary resources and the dangerous wastes, and has the advantages of high recovery processing efficiency, good recovery processing effect, high economy and good environmental protection effect.
According to one embodiment of the invention, the second expansion section furnace chamber has a higher height than the first expansion section furnace chamber.
According to one embodiment of the invention, the inner bottom surface of the hearth chamber is a concave arc surface, a V-shaped surface, an inclined surface or a horizontal surface.
According to one embodiment of the invention, the hearth chamber is divided into a first hearth chamber and a second hearth chamber which are connected to each other in the horizontal direction, wherein the first hearth chamber is communicated with the first expansion section furnace chamber up and down, the second hearth chamber is communicated with the second expansion section furnace chamber up and down, and the inner bottom surface of the first hearth chamber is higher than the inner bottom surface of the second hearth chamber.
According to a further embodiment of the invention, the hearth side wall is provided with a first slag tap at one end located in the first hearth chamber.
According to a still further embodiment of the invention, the hearth side wall is further provided with a second slag notch at one end of the first hearth chamber, the second slag notch being lower in height than the first slag notch.
According to a still further embodiment of the invention, the hearth side wall is provided with two metal tapping holes at one end of the second furnace chamber.
According to one embodiment of the invention, the hearth adopts a structural form that a high-quality refractory material is lined in the tooth of the tooth-shaped cast copper water jacket.
According to one embodiment of the invention, the expansion section hearth adopts a structural form that a groove lining of a dovetail groove type casting copper water jacket is provided with high-quality refractory materials.
According to one embodiment of the invention, the straight hearth, the flue and the furnace roof all adopt a structural form that a ramming mass is lined in a steel plate water jacket.
According to one embodiment of the invention, the stove top is a whole water cooled stove top.
According to one embodiment of the invention, the outer peripheral side of the hearth and the outer peripheral side of the expansion section hearth are provided with furnace shell coamings, and the outer peripheral sides of the furnace shell coamings and the outer peripheral sides of the straight hearth are correspondingly connected with a plurality of upright posts distributed around the outer periphery of the furnace body through a plurality of girts.
According to one embodiment of the invention, it further comprises a bottom beam, which is located below the hearth bottom wall, which is supported on the bottom beam for ventilation below the hearth bottom wall.
According to one embodiment of the invention, the furnace further comprises an electrode assembly mounted on the first furnace roof, one end of the electrode assembly extending into the first expansion section furnace chamber and the hearth chamber.
According to one embodiment of the invention, the second furnace roof has an inclined portion extending downwardly from far and near to the lower inlet of the flue, with reference to the lower inlet of the flue and in the vicinity of the periphery of the flue, so that the height of the portion of the straight furnace chamber in the vicinity of the periphery of the flue gradually decreases from far to near.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of a comprehensive recycling furnace according to an embodiment of the present invention.
FIG. 2 is a schematic cross-sectional view of the structure at A-A in FIG. 1.
Fig. 3 is a schematic cross-sectional view of the structure at B-B in fig. 1.
Reference numerals:
Comprehensive recovery treatment furnace 1000
Hearth 1
Hearth side wall 101 hearth bottom wall 102
Hearth chamber 103 first hearth chamber 1031 second hearth chamber 1032
The first slag discharging port 104 and the second slag discharging port 105 are provided with a valuable metal discharging port 107 of a spray gun port 106
Enlarged hearth 2
Expanded section furnace sidewall 201
First enlarged cavity 2021 and second enlarged cavity 2022 of enlarged cavity 202
Straight hearth 3
Straight hearth side wall 301 and straight hearth 302
Furnace roof 4
First furnace roof 401 and second furnace roof 402 feed opening 403
Flue 5
Laryngeal inlet 501
Tooth-shaped cast copper water jacket 6
Dovetail groove type cast copper water jacket 7
Steel plate water jacket 8
Flat water jacket 9
Ramming mass 10
High-quality refractory 11
Bottom beam 12
Electrode assembly 13
Furnace shell coaming 14
Girt 15
Column 16
Pull rod 17
Secondary air port 18
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
An integrated recovery processing furnace 1000 according to an embodiment of the present invention is described below with reference to fig. 1 to 3.
As shown in fig. 1 to 3, the comprehensive recycling furnace 1000 according to the embodiment of the invention comprises a furnace hearth 1, an enlarged hearth 2, a straight hearth 3, a furnace roof 4 and a flue 5, wherein the furnace hearth 1 comprises a furnace hearth side wall 101 and a furnace hearth bottom wall 102, the furnace hearth side wall 101 and the furnace hearth bottom wall 102 jointly define a furnace hearth cavity 103, and a plurality of spray gun holes 106 are formed in the furnace hearth side wall 101; the expansion section hearth 2 comprises an expansion section hearth side wall 201, the expansion section hearth side wall 201 defines an expansion section hearth 202, the lower end of the expansion section hearth side wall 201 is connected with the upper end of the hearth side wall 101, the horizontal inner diameter of the expansion section hearth 202 is gradually expanded from bottom to top, and the expansion section hearth 202 is divided into a first expansion section hearth 2021 and a second expansion section hearth 2022 which are communicated with each other in the horizontal direction; the straight hearth 3 comprises a straight hearth side wall 301, the straight hearth side wall 301 defines a straight hearth 302, and the lower end of the straight hearth side wall 301 is connected with the upper end of the enlarged hearth side wall 201 corresponding to the second enlarged hearth 2022; the furnace top 4 comprises a first furnace top 401 covered on the top of the first expansion furnace chamber 2021 and a second furnace top 402 covered on the top of the straight furnace chamber 302, and a feed opening 403 is arranged on the second furnace top 402; the flue 5 is vertically disposed on the second roof 402 and is adjacent to the first roof 401.
Specifically, the hearth 1 comprises a hearth side wall 101 and a hearth bottom wall 102, the hearth side wall 101 and the hearth bottom wall 102 together defining a hearth cavity 103, and the hearth side wall 101 is provided with a plurality of gun ports 106; it can be understood that the slag former, the reducing agent and secondary resources such as copper-containing sludge, copper-containing solid waste, surface treatment substances and the like are mixed in the hearth cavity 103 and melted to form a molten pool, a spray gun is inserted into a plurality of spray gun openings 106 arranged on the hearth side wall 101, and high-speed oxygen-enriched air and natural gas are sprayed into the molten pool to severely stir the molten pool, so that the mass transfer and heat transfer process of the molten pool are enhanced, the comprehensive recovery of the secondary resources and the harmless treatment of dangerous wastes are accelerated, the oxygen-enriched air and the natural gas are combusted in the molten pool to supplement heat for the molten pool, the melting of materials is accelerated, the reaction atmosphere of the molten pool is controlled by controlling the input quantity of the natural gas, and the reduction of valuable metals is promoted. The lance may be used to inject other more economical solids such as pulverized coal, semi-coke, and petroleum coke into the molten pool.
The expansion section hearth 2 comprises an expansion section hearth side wall 201, the expansion section hearth side wall 201 defines an expansion section hearth 202, the lower end of the expansion section hearth side wall 201 is connected with the upper end of the hearth side wall 101, the horizontal inner diameter of the expansion section hearth 202 is gradually expanded from bottom to top, and the expansion section hearth 202 is divided into a first expansion section hearth 2021 and a second expansion section hearth 2022 which are communicated with each other in the horizontal direction; it will be appreciated that the enlarged furnace chamber 202 communicates with the hearth chamber 103, whereby CO and the like which are not completely combusted in the molten bath can be combusted in the enlarged furnace chamber 202, and the horizontal inner diameter dimension of the enlarged furnace chamber 202 is gradually enlarged from bottom to top, whereby the volume of the enlarged furnace chamber 202 is large and the combustion of the combustible gas is more sufficient.
The straight hearth 3 comprises a straight hearth side wall 301, the straight hearth side wall 301 defines a straight hearth 302, and the lower end of the straight hearth side wall 301 is connected with the upper end of the enlarged hearth side wall 201 corresponding to the second enlarged hearth 2022; it can be understood that when the straight furnace chamber 302, the expanded furnace chamber 202 and the hearth chamber 103 are communicated and the combustion of the combustible gas CO and the like is insufficient in the expanded furnace chamber 202, the combustion can be continued in the straight furnace chamber 302, and the horizontal inner diameter size of the straight furnace chamber 302 is the same as the horizontal inner diameter size of the upper part of the expanded furnace chamber 202, so that the volume of the straight furnace chamber 302 is large and the combustion of the combustible gas is more sufficient; the straight furnace chamber 302 is higher than the first expansion end furnace chamber, and a high-low furnace chamber is formed in the comprehensive recovery processing furnace 1000, so that the emission of the flue gas is more organized, the collection and emission of the flue gas are facilitated, and the heat loss in the first expansion section furnace chamber 2021 caused by the overlarge volume of the first expansion section furnace chamber 2021 is avoided, so that the resource waste is caused.
The furnace top 4 comprises a first furnace top 401 covered on the top of the first expansion furnace chamber 2021 and a second furnace top 402 covered on the top of the straight furnace chamber 302, and a feed opening 403 is arranged on the second furnace top 402; it will be appreciated that the slag former, reductant and secondary resources such as copper-containing sludge, copper-containing solid waste, surface treatments, etc. are dosed and fed into the integrated recovery processing furnace 1000 through a feed opening 403 provided in the second furnace roof 402.
The flue 5 is vertically disposed on the second roof 402 and is adjacent to the first roof 401. It can be appreciated that the flue 5 is vertically arranged on the second furnace top 402 and is adjacent to the first furnace top 401, so that the collection and emission of the flue gas can be facilitated, the flue gas is generated after the combustible material is combusted, the flue gas enters the waste heat boiler through the flue 5, and the waste heat, zn and other volatile valuable metals are recycled in the flue gas system.
According to the comprehensive recovery processing furnace 1000 of the embodiment of the invention, the working process is as follows: slag formers, reducing agents and secondary resources such as copper-containing sludge, copper-containing solid waste, surface treatment substances and the like are added into the comprehensive recovery treatment furnace 1000 through a blanking port 403 arranged on the second furnace top 402 after being proportioned, a plurality of spray guns spray high-speed oxygen-enriched air and natural gas into a molten pool, the oxygen-enriched air and the natural gas are vigorously combusted in the molten pool to provide a heat source for melting added materials, meanwhile, the reaction atmosphere of the molten pool is controlled by controlling the input amount of the natural gas, the reduction of valuable metals is accelerated, CO and the like which are not completely combusted in the molten pool are combusted in the expansion section furnace chamber 202 and the straight furnace chamber 302, smoke generated by combustion enters a waste heat boiler through a flue 5, valuable metals such as Cu, pb and the like are enriched in the bottom of the hearth chamber 103 and are periodically recovered, and valuable metals such as Zn and the like enter the flue 5 to be recovered by a smoke system.
According to the comprehensive recovery processing furnace 1000 of the embodiment of the invention, the horizontal inner diameter size of the expansion section furnace chamber 202 is gradually expanded from bottom to top, the horizontal inner diameter size of the hearth chamber 103 is the same as the bottom size of the expansion section furnace chamber 202, the horizontal inner diameter size of the straight furnace chamber 302 is the same as the top size of the expansion section furnace chamber 202, the mixture added by the feed opening 403 is melted in the hearth chamber 103 to form a molten pool, the spray gun sprays high-speed oxygen-enriched air and natural gas into the molten pool, the oxygen-enriched air and the natural gas are vigorously combusted in the molten pool to supplement heat for the molten pool, and meanwhile, the reaction atmosphere of the molten pool is controlled by controlling the input amount of the natural gas, and combustible dangerous waste, CO which is not completely combusted in the molten pool and the like are combusted in the expansion section furnace chamber 2 and the straight furnace chamber 3, so that secondary resources and dangerous waste can fully react in the comprehensive recovery processing furnace 1000, and recovery processing efficiency is high; valuable metals such as Cu, pb and the like are enriched at the bottom of the hearth cavity 103, valuable metals such as Zn and the like which are easy to volatilize are periodically recovered, enter the flue 5 and are recovered by a flue gas system, so that the environmental pollution is reduced, and the environmental protection effect is good. In summary, the comprehensive recycling furnace 1000 of the embodiment of the invention can recycle secondary resources and dangerous wastes, and has the advantages of high recycling efficiency, good recycling effect, high economy and good environmental protection effect.
As shown in fig. 1, the second enlarged cavity 2022 has a height higher than the first enlarged cavity 2021 according to an embodiment of the present invention. It can be appreciated that the height of the first expansion furnace chamber 2021 is lower than that of the second expansion furnace chamber 2022, and a high-low furnace chamber is formed in the comprehensive recovery processing furnace 1000, so that the emission of the flue gas is more organized, the collection and emission of the flue gas are facilitated, the height of the first expansion furnace chamber 2021 is lower, the heat dissipation is small, the temperature is higher, and the mobility of the waste residues generated after the reduction of secondary resources, dangerous wastes and the like is higher, thereby facilitating the slag discharge.
As shown in fig. 2, according to one embodiment of the invention, the inner bottom surface of the hearth chamber 103 is a concave arcuate surface, V-shaped surface, inclined surface or horizontal surface. It will be appreciated that when the inner bottom surface of the hearth chamber 103 is concave arcuate, V-shaped, beveled, the metal values can move and accumulate from high to low along the inner bottom surface of the hearth chamber 103, facilitating the recovery of the metal values by the discharge.
As shown in fig. 1 and 2, according to an embodiment of the present invention, the hearth chamber 103 is divided into a first hearth chamber 1031 and a second hearth chamber 1032 connected to each other in a horizontal direction, wherein the first hearth chamber 1031 communicates with the first expansion section furnace chamber 2021 up and down, and the second hearth chamber 1032 communicates with the second expansion section furnace chamber 2022 up and down, and an inner bottom surface of the first hearth chamber 1031 is higher than an inner bottom surface of the second hearth chamber 1032. It can be appreciated that the secondary resource is burned in the second hearth chamber 1032 in a submerged manner, the metal phase generated by the reaction is enriched in the inner bottom surface of the second hearth chamber 1032, the valuable metal is conveniently discharged and recovered, the inner bottom surface of the first hearth chamber 1031 is higher than the inner bottom surface of the second hearth chamber 1032, and the waste residue is accumulated in the first hearth chamber 1031 to be conveniently discharged.
The hearth side wall 101 is provided with a plurality of spray gun openings 106 at two sides of the second hearth cavity 1032, the spray gun is inserted into the plurality of spray gun openings 106 at one end of the second hearth cavity 1032, high-speed oxygen-enriched air and natural gas are sprayed into the second hearth cavity 1032, and the molten pool can be vigorously stirred, so that the mass and heat transfer process of the molten pool is enhanced, the secondary resources and dangerous wastes react more fully in the second hearth cavity 1032, the comprehensive recovery of the secondary resources and the harmless treatment process of the dangerous wastes are accelerated,
According to a further embodiment of the invention, the hearth side wall 101 is provided with a first slag notch 104 at one end located in the first hearth chamber 1031. Thereby, the slag can be periodically discharged from the first slag notch 104.
As shown in fig. 1 and 2, according to still a further embodiment of the present invention, the hearth side wall 101 is further provided with a second slag tap 105 at one end of the first hearth chamber 1031, the second slag tap 105 being lower in height than the first slag tap 104. It will be appreciated that when the comprehensive recovery processing furnace 1000 is operating normally, the slag level is relatively stable, slag is discharged through the first slag discharge port 104, and when maintenance of the lance, emergency shutdown, etc., the liquid level of the bath needs to be lowered, the slag level is lowered, and at this time, slag needs to be discharged as soon as possible through the second slag discharge port 105.
According to a still further embodiment of the invention, the side wall of the hearth 1 is provided with two metal tapping holes 107 at one end of the second furnace chamber. It will be appreciated that the two metal value outlets 107 are positioned parallel to each other and in reserve, and that when one of the metal value outlets 107 is damaged or serviced, the other metal value outlet 107 can be used to timely discharge the metal value from the furnace.
According to one embodiment of the invention, the hearth 1 takes the form of a tooth-cast copper jacket 6 lined with high quality refractory material 11. Therefore, the hearth 1 can effectively resist physical scouring of high-speed air flow sprayed by the spray gun to the inner wall of the hearth 1 and chemical erosion of severe chemical reaction in a molten pool to the inner wall of the hearth 1, the service life of the hearth 1 can be prolonged, the temperatures of the hearth side wall 101 and the hearth bottom wall 102 can be reduced, the overhigh temperature of the comprehensive recovery treatment furnace 1000 furnace body can be avoided, and the working environment can be improved.
It should be noted that the hearth 1 may adopt other water-cooling element structures, such as a vertical copper water jacket.
According to one embodiment of the invention, the enlarged hearth 2 is in the form of a dovetail cast copper jacket 7 lined with a high quality refractory 11. Therefore, the expansion section hearth 2 can effectively resist physical scouring caused by slag surface fluctuation on the expansion section hearth 2 and chemical erosion caused by compounds in slag on the expansion section hearth 2, the service life of the expansion section hearth 2 can be prolonged, the temperature of the side wall 201 of the expansion section hearth is reduced, the overhigh temperature of the comprehensive recovery treatment furnace 1000 hearth is avoided, and the working environment is improved.
It should be noted that the enlarged hearth 2 may be in other water cooling element structures, such as a toothed copper water jacket.
According to one embodiment of the invention, the hearth 3, flue 5 and roof 4 are each constructed by lining a steel sheet water jacket 8 with ramming mass 10. Therefore, the direct hearth 3, the flue 5 and the furnace roof 4 can effectively resist the influence of the combustion of the combustible gas on the direct hearth side wall 301, the flue 5 and the furnace roof 4, the service lives of the direct hearth 3, the flue 5 and the furnace roof 4 can be prolonged, the temperatures of the direct hearth side wall 301, the flue 5 and the furnace roof 4 are reduced, the overhigh temperature of the comprehensive recovery treatment furnace 1000 is avoided, and the working environment is improved.
The gaps among the hearth 1, the expanded section hearth 2 and the straight hearth 3 are reinforced and sealed in a steel plate sealing strip composite filler mode, so that harmful smoke and gas are prevented from escaping in the recovery treatment process of dangerous wastes. A flat water jacket 9 is arranged between the enlarged hearth side wall 201 and the straight hearth side wall 301 to play a role in supporting.
According to one embodiment of the invention, the stove top 4 is a monolithic water cooled stove top 4. It can be understood that the integral water-cooled furnace top 4 can prevent the furnace top 4 from being over-high in temperature, the service life of the furnace top 4 is prolonged, the integral water-cooled furnace top 4 is good in tightness, harmful dangerous gas in the furnace is prevented from overflowing through gaps of the furnace top 4, and the safety and the environmental protection performance of the comprehensive recovery treatment furnace 1000 are improved.
The second furnace top 402 is provided with a nozzle (not shown in the figure) for spraying the combustible dangerous waste and secondary resources such as waste activated carbon, waste organic solvent and the like into the furnace, and burning the combustible dangerous waste and secondary resources together with combustible gases such as CO and the like escaping from the molten pool in the expansion-section furnace chamber 202 and the straight furnace chamber 302; the secondary air port 18 is also arranged on the second furnace top 402, and a large amount of secondary air such as oxygen-enriched air or compressed air is blown in, so that the combustible dangerous waste is intensively and violently combusted in the enlarged-section furnace chamber 202 and the straight furnace chamber 302, and the purpose of harmless treatment of the combustible dangerous waste is achieved.
As shown in fig. 1 to 3, according to one embodiment of the present invention, the outer peripheral side of the hearth 1 and the outer peripheral side of the enlarged hearth 2 are provided with a shell cover plate 14, and the outer peripheral side of the shell cover plate 14 and the outer peripheral side of the straight hearth 3 are correspondingly connected to a plurality of pillars 16 distributed around the outside of the furnace body by a plurality of girts 15. It can be understood that the furnace body comprises a furnace hearth 1, an enlarged section furnace hearth 2, a straight furnace hearth 3 and a furnace roof 4, the furnace shell enclosing plate 14 can enhance the overall stability of the furnace body, the overall stability is prevented from being reduced when the furnace body is overlarge, the tooth-shaped cast copper water jacket 6 and the dovetail groove-shaped cast copper water jacket 7 can be directly arranged on the furnace shell enclosing plate 14, the installation is convenient and quick, the furnace shell enclosing plate 14 can ensure the tightness of the furnace hearth 1 and the enlarged section furnace hearth 2, the harmful dangerous gas in the furnace is prevented from overflowing through a gap of the furnace roof 4, and the safety and the environmental protection of the comprehensive recovery processing furnace 1000 are improved. The plurality of girts 15 and the plurality of upright posts 16 are correspondingly connected on the periphery of the furnace body to form a framework structure, so that the rigidity of the furnace body is improved.
Preferably, the upright posts 16 in symmetrical positions are connected through the pull rods 17, the upright posts 16, the girt beams 15 and the upright posts 16 are correspondingly connected to form an elastic framework structure on the periphery of the furnace body, and the pull rods 17 have certain adjustable degree in the length direction, so that the rigidity of the furnace body is ensured, and meanwhile, certain elasticity is also realized, and the stability of the structure of the furnace body after being heated and expanded is ensured.
As shown in fig. 1, according to one embodiment of the invention, the hearth comprises a bottom beam 12, the bottom beam 12 being located below the hearth bottom wall 102, the hearth bottom wall 102 being supported on the bottom beam 12 to ventilate below the hearth bottom wall 102. Thereby avoiding overheating of the hearth bottom wall 102.
Preferably, the bottom beam 12 is an I-shaped bottom beam 12, the hearth bottom wall 102 is supported on the I-shaped bottom beam 12, and the ventilation effect is good, so that the hearth bottom wall 102 is prevented from being overheated.
According to one embodiment of the invention, the electrode assembly 13 is further comprised, the electrode assembly 13 being mounted on the first roof 401, one end of the electrode assembly 13 extending into the first enlarged section furnace chamber 2021 and the hearth chamber 103. It will be appreciated that the electrode assembly 13 is used to heat the slag as required to raise the slag temperature so that the slag has good fluidity and is conveniently discharged from the slag discharge port.
The heating device is not limited to the electrode assembly 13, and a device for heating the slag may be selected according to actual circumstances.
According to one embodiment of the invention, the second furnace roof 402 has an inclined portion extending downwardly from far and near to the lower inlet of the flue 5, with reference to the lower inlet of the flue 5 and within a range near the periphery of the flue 5, so that the height of the portion of the straight furnace chamber 302 within the range near the periphery of the flue 5 gradually decreases from far to near. It can be understood that the second furnace top 402 is a shrinkage furnace top 4, and the flue gas enters the flue 5 along the second furnace top 402 and the first furnace top 401, so that the flue gas emission has good organization, is convenient for the collection and emission of the flue gas, and is beneficial to the comprehensive recovery of valuable elements entering the flue gas.
It should be noted that, the secondary air port 18 is provided at the position of the flue 5, and a large amount of secondary air, such as oxygen-enriched air or compressed air, is blown in, so that the combustible gas which is not fully combusted in the enlarged furnace chamber 202 and the straight furnace chamber 302 is vigorously combusted at the flue 5. The flue 5 is a water-cooling large flue 5, so that the combustible gas can be fully combusted at the flue 5, the space heat load is controlled, and the overheat of the flue 5 is avoided, and the service life of the flue 5 is influenced. The joint part of the flue 5 and the furnace top 4 is the throat 501, the throat 501 adopts the design of a strong cooling water cooling structure beam, the integral structural strength of the furnace body is ensured, the cooling effect is enhanced, the service life of the comprehensive recovery processing furnace 1000 is prolonged, and the equipment cost is effectively reduced while the flue gas collecting effect is ensured. The periphery of the flue 5 is provided with an independent supporting framework, and the independent supporting framework is related to the elastic framework structure through means such as the upright posts 16, the pull rods 17 and the like, so that the structure of the flue 5 can be kept independent to a certain extent, and is tightly combined with the whole furnace body, and the stability of the whole structure of the comprehensive recovery treatment furnace 1000 is ensured.
The shape of the fume outlet may be square, rectangular, circular or oblong, and the shape of the comprehensive recovery processing furnace 1000 may be rectangular, circular, oblong or bullet-shaped.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (15)
1. An integrated recovery processing furnace, comprising:
The hearth comprises a hearth side wall and a hearth bottom wall, the hearth side wall and the hearth bottom wall jointly define a hearth cavity, and a plurality of gun nozzles are arranged on the hearth side wall;
The expansion section furnace comprises an expansion section furnace side wall, the expansion section furnace side wall is used for limiting an expansion section furnace chamber, the lower end of the expansion section furnace side wall is connected with the upper end of the furnace hearth side wall, the horizontal inner diameter size of the expansion section furnace chamber is gradually expanded from bottom to top, and the expansion section furnace chamber is divided into a first expansion section furnace chamber and a second expansion section furnace chamber which are communicated with each other in the horizontal direction;
The vertical hearth comprises a vertical hearth side wall, the vertical hearth side wall defines a vertical hearth, the horizontal inner diameter of the vertical hearth is the same as that of the upper part of the expansion section hearth, and the lower end of the vertical hearth side wall is connected with the upper end of the expansion section hearth side wall corresponding to the second expansion section hearth;
The furnace top comprises a first furnace top covering the top of the first expansion section furnace chamber and a second furnace top covering the top of the straight furnace chamber, and a feed opening is formed in the second furnace top;
and the flue is vertically arranged on the second furnace top and is adjacent to the first furnace top.
2. The comprehensive recovery processing furnace according to claim 1, wherein the second expansion section furnace chamber has a height higher than that of the first expansion section furnace chamber.
3. The comprehensive recovery processing furnace according to claim 1, wherein the inner bottom surface of the hearth chamber is a concave arc surface, a V-shaped surface, an inclined surface or a horizontal surface.
4. The comprehensive recycling treatment furnace according to claim 1, wherein the hearth chamber is divided into a first hearth chamber and a second hearth chamber connected to each other in a horizontal direction, wherein the first hearth chamber is in up-down communication with the first expansion section furnace chamber, the second hearth chamber is in up-down communication with the second expansion section furnace chamber, and an inner bottom surface of the first hearth chamber is higher than an inner bottom surface of the second hearth chamber.
5. The comprehensive recovery processing furnace according to claim 4, wherein the hearth side wall is provided with a first slag tap at one end of the first hearth chamber.
6. The comprehensive recovery processing furnace according to claim 5, wherein the hearth side wall is further provided with a second slag tap at one end of the first hearth chamber, and the second slag tap is lower than the first slag tap in height.
7. The furnace of claim 4, wherein the hearth side wall has two metal value outlets at one end of the second hearth chamber.
8. The comprehensive recovery processing furnace according to claim 1, wherein the hearth adopts a structure form of lining high-quality refractory material in teeth of a tooth-shaped cast copper water jacket.
9. The comprehensive recovery processing furnace according to claim 1, wherein the expansion section hearth adopts a structural form that a groove lining of a dovetail groove type cast copper water jacket is provided with a high-quality refractory material.
10. The comprehensive recovery processing furnace according to claim 1, wherein the straight hearth, the flue and the furnace roof all adopt a structural form that a ramming mass is lined in a steel plate water jacket.
11. The comprehensive recovery processing furnace according to claim 1, wherein the furnace roof is a whole water cooled furnace roof.
12. The comprehensive recovery processing furnace according to claim 1, wherein a furnace shell coaming is provided on the outer peripheral side of the hearth and the outer peripheral side of the expansion section hearth, and the outer peripheral side of the furnace shell coaming and the outer peripheral side of the straight hearth are correspondingly connected with a plurality of upright posts distributed around the furnace body through a plurality of girts.
13. The comprehensive recovery processing furnace of claim 1, further comprising a bottom beam positioned below the hearth bottom wall, the hearth bottom wall supported on the bottom beam to ventilate below the hearth bottom wall.
14. The integrated recovery processing furnace of claim 1, further comprising an electrode assembly mounted on the first roof, one end of the electrode assembly extending into the first expansion section furnace chamber and the hearth chamber.
15. The comprehensive recovery processing furnace according to claim 1, wherein the second furnace roof has an inclined portion extending downward from far and near toward the lower inlet of the flue with reference to the lower inlet of the flue and in the vicinity of the periphery of the flue, so that the height of the portion of the straight furnace chamber in the vicinity of the periphery of the flue is gradually lowered from far to near.
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