CN113915619A - Waste fan blade treatment device for rotary kiln and plasma melting furnace - Google Patents
Waste fan blade treatment device for rotary kiln and plasma melting furnace Download PDFInfo
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- CN113915619A CN113915619A CN202111330582.6A CN202111330582A CN113915619A CN 113915619 A CN113915619 A CN 113915619A CN 202111330582 A CN202111330582 A CN 202111330582A CN 113915619 A CN113915619 A CN 113915619A
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- waste heat
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/006—General arrangement of incineration plant, e.g. flow sheets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
- F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
- F23G5/165—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber arranged at a different level
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/444—Waste feed arrangements for solid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/50—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/06—Crucible or pot furnaces heated electrically, e.g. induction crucible furnaces with or without any other source of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/15—Tapping equipment; Equipment for removing or retaining slag
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2205/00—Waste feed arrangements
- F23G2205/12—Waste feed arrangements using conveyors
-
- 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
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The invention discloses a waste fan blade treatment device for a rotary kiln and a plasma melting furnace. The incineration assembly comprises a rotary kiln, a combined burner arranged on the rotary kiln and a plasma melting furnace arranged at the tail end of the rotary kiln; and the recovery assembly is connected to one side of the incineration assembly and comprises a waste heat recovery module and a tail gas treatment module. Has the advantages that: the problem of traditional rotary furnace kiln danger is useless to be dealt with system can't deal with waste fan blade is solved, through dealing with the technology in coordination, reduces and deals with the cost to with rotary furnace kiln and plasma melting danger processing technology in coordination deals with waste fan blade. The waste fan blade provides SiO2 for the plasma melting process, and the addition of auxiliary materials in the plasma melting hazardous waste disposal process is reduced. By the plasma melting treatment process, harmless glass slag can be obtained and can be used as a roadbed material and a sand blasting material base material.
Description
Technical Field
The invention relates to the technical field of waste treatment related equipment, in particular to a waste fan blade treatment device for a rotary kiln and a plasma melting furnace.
Background
Most wind power generator fan blades are made of thermosetting resin-based composite materials. After the blades are retired, a large amount of land resources can be wasted by adopting a simple landfill method, and water and soil pollution can also be caused; after the implementation of the national solid waste pollution environment prevention and treatment law, the solid waste pollution environment can not be disposed by landfill.
The recovery techniques that have reached the industrial stage and are currently being studied are: a recycling method, a mechanical crushing method, a physical and chemical recovery method, a power plant incineration heat energy method, a cement kiln synergistic treatment method and the like.
A cement kiln co-processing technology. The waste fan blade materials are firstly crushed and sent into a cement kiln, wherein organic matters replace coal to provide energy for chemical reaction in the kiln, and inorganic matters are converted into cement raw materials for use. Realizes the resource treatment of the composite material waste. The stability of the fiber content and the acidity and alkalinity of the waste blades can cause the instability of the content of alkali metal substances and the content of glass in cement, and the consistency of the quality of the cement is difficult to ensure; in addition, due to the unstable resin content in the composite material solid waste, the supplied energy is unstable in the process, so that the discharge is not up to the standard. Due to the transportation cost, the use of this technology is also affected by whether a cement plant is present near the site where the waste blades are produced.
The power plant burning heat energy method is to crush waste blades and feed the crushed waste blades and fuel into a boiler for burning to obtain heat energy. The blending combustion proportion needs to be strictly controlled, otherwise, excessive hot slag is easy to block the grate of the incinerator, and explosion is easy to cause. Compared with a cement kiln synergistic method, combustion residues are not fully utilized; and if the combustion is unstable, a large amount of toxic and harmful organic micromolecules released can cause secondary pollution.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above-mentioned problems of the conventional waste fan blade treatment apparatus.
Therefore, the invention aims to provide a waste fan blade treatment device for a rotary kiln and a plasma melting furnace, so that the rotary kiln and the plasma melting furnace are cooperatively treated, the treatment cost is reduced, and the addition of auxiliary materials in a plasma melting hazardous waste treatment process is reduced.
In order to solve the technical problems, the invention provides the following technical scheme: a waste fan blade treatment device for a rotary kiln and a plasma melting furnace comprises a pretreatment assembly, a waste fan blade treatment device and a waste fan blade treatment device, wherein the pretreatment assembly comprises a crusher, a blanking pit and a feeding part, the blanking pit is arranged at the lower ends of the crusher and the feeding part, and the feeding part is arranged on one side of the crusher; the incineration component is arranged at the rear side of the pretreatment component and comprises a rotary kiln, a secondary combustion chamber arranged at the tail part of the rotary kiln and a plasma melting furnace arranged at the lower side of the secondary combustion chamber; and the recovery assembly is connected to one side of the incineration assembly and comprises a waste heat recovery module and a tail gas treatment module.
As a preferred scheme of the waste fan blade treatment device of the rotary kiln and the plasma melting furnace, the waste fan blade treatment device comprises the following steps: the crusher is characterized in that a mixer is arranged on the lower side of the crusher, the feeding component comprises a grab bucket, a stokehole feeding hopper and a stokehole material pusher, and the stokehole feeding hopper is arranged on the upper side of the stokehole material pusher.
As a preferred scheme of the waste fan blade treatment device of the rotary kiln and the plasma melting furnace, the waste fan blade treatment device comprises the following steps: the front end of the rotary kiln is connected with a stokehold material pusher, and a first combined burner is arranged on one side of the rotary kiln.
As a preferred scheme of the waste fan blade treatment device of the rotary kiln and the plasma melting furnace, the waste fan blade treatment device comprises the following steps: 4 plasma torches are uniformly distributed on the outer wall of the plasma melting furnace, a second combined burner is arranged on the upper side of the second combustion chamber, and a slag discharge port is formed in the lower side of the plasma melting furnace.
As a preferred scheme of the waste fan blade treatment device of the rotary kiln and the plasma melting furnace, the waste fan blade treatment device comprises the following steps: slag discharge mouth downside is provided with quench water tank and glass sediment dragveyer, glass sediment dragveyer sets up in quench water tank one side, and with quench water tank interconnect.
As a preferred scheme of the waste fan blade treatment device of the rotary kiln and the plasma melting furnace, the waste fan blade treatment device comprises the following steps: the waste heat recovery module comprises a waste heat boiler and a waste heat power generation system, the waste heat boiler is arranged on one side of the secondary combustion chamber, and one end of the waste heat boiler is connected with the waste heat power generation system.
As a preferred scheme of the waste fan blade treatment device of the rotary kiln and the plasma melting furnace, the waste fan blade treatment device comprises the following steps: the tail gas treatment module comprises an SNCR denitration system, a quenching system, a dry deacidification tower, a cloth bag dust removal system and a wet deacidification system,
the waste heat boiler is connected with a quenching tower, and one side of the quenching tower is provided with a dry deacidification tower.
As a preferred scheme of the waste fan blade treatment device of the rotary kiln and the plasma melting furnace, the waste fan blade treatment device comprises the following steps: the upper side of the dry deacidification tower is provided with a dry deacidification injection system and an active carbon injection system, and one side of the dry deacidification tower is provided with a bag-type dust remover.
As a preferred scheme of the waste fan blade treatment device of the rotary kiln and the plasma melting furnace, the waste fan blade treatment device comprises the following steps: one side of the bag-type dust collector is connected with a wet-type deacidification tower, one side of the wet-type deacidification tower is connected with a wet-type electric dust collector, one end of the wet-type electric dust collector is provided with a chimney, and the lower end of the chimney is provided with a draught fan.
The invention has the beneficial effects that: the invention provides a novel waste fan blade incineration disposal process and a waste fan blade plasma melting disposal process. The problem of traditional rotary furnace kiln danger is useless to be dealt with system can't deal with waste fan blade is solved, through dealing with the technology in coordination, reduces and deals with the cost to with rotary furnace kiln and plasma melting danger processing technology in coordination deals with waste fan blade. The waste fan blade provides SiO2 for the plasma melting process, and the addition of auxiliary materials in the plasma melting hazardous waste disposal process is reduced. By the plasma melting treatment process, harmless glass slag can be obtained and can be used as a roadbed material and a sand blasting material base material.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be 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 to obtain other drawings based on these drawings without inventive exercise. Wherein:
FIG. 1 is a schematic view of the overall structure of the waste blade treatment device of the rotary kiln and the plasma melting furnace.
Fig. 2 is a schematic view of a pretreatment assembly of the rotary kiln and the plasma melting furnace waste fan blade treatment device.
Fig. 3 is a schematic structural view of an incineration assembly of the waste fan blade treatment device of the rotary kiln and the plasma melting furnace.
Fig. 4 is a schematic structural diagram of a recovery assembly of the waste fan blade treatment device of the rotary kiln and the plasma melting furnace.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Furthermore, the present invention is described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional view illustrating the structure of the device is not enlarged partially according to the general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
Example 1
Referring to fig. 1 and 2, the waste fan blade processing device for the rotary kiln and the plasma melting furnace comprises a pretreatment assembly 100, a feeding component 103, a discharging pit 102 and a discharging component, wherein the discharging pit 102 is arranged at the lower ends of the crusher 101 and the feeding component 103, and the feeding component 103 is arranged on one side of the crusher 101; the incineration assembly 200 is arranged at the rear side of the pretreatment assembly 100 and comprises a rotary kiln 201, a secondary combustion chamber 202 arranged at the tail part of the rotary kiln 201 and a plasma melting furnace 203 arranged at the lower side of the secondary combustion chamber 202; and the recovery assembly 300 is connected to one side of the incineration assembly 200 and comprises a waste heat recovery module 301 and a tail gas treatment module 302.
Specifically, the main structure of the invention comprises a pretreatment assembly 100, an incineration assembly 200 and a recovery assembly 300, in the embodiment, the pretreatment assembly 100 comprises a crusher 101, a blanking pit 102 and a feeding part 103, the blanking pit 102 is arranged at the lower ends of the crusher 101 and the feeding part 103, and the feeding part 103 is arranged at one side of the crusher 101; the incineration assembly 200 is arranged at the rear side of the pretreatment assembly 100 and comprises a rotary kiln 201, a secondary combustion chamber 202 arranged at the tail part of the rotary kiln 201 and a plasma melting furnace 203 arranged at the lower side of the secondary combustion chamber 202. At present, the 201 dangerous waste treatment process of the rotary kiln is still dangerous waste, the discharged furnace slag needs to be solidified and then buried, the waste blades contain a large amount of silicon dioxide, the quantity of the furnace slag of the rotary kiln can be increased, the treatment cost is increased, and therefore, at present, dangerous waste treatment enterprises generally do not cooperate with one treatment waste blade. Through increasing plasma melting furnace 203, can be directly with the slag after rotary kiln 201 burns, directly carry out the melting, become harmless glass state sediment, become general solid useless, can do the sand blasting processing substrate, obtain one and divide economic value, reduce comprehensive processing cost, make the useless processing technology of danger dispose of abandonment fan blade in coordination become feasible. The treatment of the fan blade is thorough and harmless, energy and inorganic matters are recycled, and resource utilization is realized.
Compared with the traditional plasma melting 203 process, the energy consumption of the whole system can be reduced through the cooperation of the incineration process of the rotary kiln 201. Meanwhile, in the plasma melting 203 process, waste glass needs to be added to dissolve harmful substances such as heavy metals in the hazardous waste in a solid mode, the waste glass can be completely added through the cooperative treatment of the waste fan blade, and the slag formed by melting the waste blade can well dissolve the harmful substances such as heavy metals in a solid mode.
Further, the recovery assembly 300 is connected to one side of the incineration assembly 200 and comprises a waste heat recovery module 301 and a tail gas treatment module 302. The recovery assembly 300 can realize the recovery of SiO2 in the waste fan blade, organic parts such as resin, adhesive and the like in the blade provide heat for a disposal system, and the redundant heat can be recycled through a waste heat furnace. The flue gas passes through a tail gas treatment system, SO that dioxin, nitric oxide, acidic gases such as SO2, HCl and HF, dust, heavy metals and other toxic and harmful pollutants in the flue gas are sufficiently removed, and finally the flue gas is discharged after reaching the standard.
The operation process is as follows: decomposing a mixture of the waste fan blade and the hazardous waste through the rotary kiln 201, wherein an organic part is decomposed, gasified and enters a secondary combustion chamber, is fully mixed with air to be combusted to release heat, and is recycled through a waste heat boiler 303; the plasma melting furnace 203 is used for replacing a slag dragging machine at the bottom of the secondary combustion chamber 202 in the conventional rotary furnace 201 hazardous waste treatment process, inorganic parts and unreacted parts in the mixture fall into the plasma melting furnace 203 completely, under the action of plasma torch electric arc high temperature, harmless glass slag is formed after melting, silicon dioxide in waste blades can increase the content of SiO2 in slag, toxic and harmful objects are guaranteed to be better dissolved in the slag in a solid mode, and the nontoxic and harmless glass slag can be recycled.
Example 2
Referring to fig. 2-4, this embodiment differs from the first embodiment in that: the mixer 104 is arranged at the lower side of the crusher 101, the feeding part 103 comprises a grab bucket 105, a stokehole feeding hopper 106 and a stokehole pusher 107, and the stokehole feeding hopper 106 is arranged at the upper side of the stokehole pusher 107.
The front end of the rotary kiln 201 is connected with the stokehold pusher 107, and a first combined burner 204 is arranged on one side. 4 plasma torches 205 are uniformly distributed on the outer wall of the plasma melting furnace 203, a second combined burner 206 is arranged on the upper side of the second combustion chamber 202, and a slag discharge port 203a is arranged on the lower side of the plasma melting furnace 203. A quenching water tank 207 and a glass slag dragging machine 208 are arranged at the lower side of the slag discharge opening 203a, and the glass slag dragging machine 208 is arranged at one side of the quenching water tank 207 and is mutually connected with the quenching water tank 207.
Specifically, in the present embodiment, the mixer 104 is disposed at the lower side of the crusher 101, the feeding part 103 includes a grab bucket 105, a stokehole feeding hopper 106, and a stokehole pusher 107, and the stokehole feeding hopper 106 is disposed at the upper side of the stokehole pusher 107. The waste blades are crushed by a crusher 101 into fragments with the external dimension smaller than 50x150mm, the fragments enter a blanking pit 102, other conventional dangerous wastes are crushed by the crusher 101 and enter a mixer 104, the fragments enter the blanking pit 102 after being fully mixed, the waste blades and the dangerous wastes are stirred and mixed by a grab bucket 105 and are sent to a stokehole feeding hopper 106, and then the mixture is sent to an incineration and melting disposal link by a stokehole pusher 107. In the mixture of the hazardous waste and the waste leaves, the waste leaves account for 5 to 30 percent, the total inorganic matters in the mixture need to be controlled to account for 25 to 40 percent,
further, the front end of the rotary kiln 201 is connected with the stokehole pusher 107, and a first combined burner 204 is arranged on one side. 4 plasma torches 205 are uniformly distributed on the outer wall of the plasma melting furnace 203, a second combined burner 206 is arranged on the upper side of the second combustion chamber 202, and a slag discharge port 203a is arranged on the lower side of the plasma melting furnace 203. The first combined burner 206 installed on the rotary kiln 201 and the second combined burner 206 installed on the second combustion chamber 202 can burn some liquid hazardous waste, diesel or natural gas to provide sufficient heat for the mixture burning. The inclination range of the rotary kiln 201 is 1-2 degrees, and the material stays in the kiln for 60-90 minutes.
Further, a quenching water tank 207 and a slag scooping machine 208 are disposed under the slag discharge port 203a, and the slag scooping machine 208 is disposed on one side of the quenching water tank 207 and is connected to the quenching water tank 207. The residence time of the slag in the plasma melting furnace 203 is 45-90 minutes to ensure complete melting. The material treatment scale of the incineration and melting system is 1.5-4 tons/hour, the melting treatment scale of the plasma melting furnace 203 is 0.5-1.6 tons/hour, and the power of the plasma torch is required to be matched with 400-1500 KW. The plasma arc temperature generated by the plasma torch 205 is 3500 ℃ plus 5000 ℃, the rated power of the single plasma torch 205 is 250KW, and the range of 150 ℃ plus 300KW can be continuously adjusted.
The rest of the structure is the same as in example 1.
The operation process is as follows: the waste blades are crushed by a crusher 101 into fragments with the external dimension smaller than 50x150mm, the fragments enter a blanking pit 102, other conventional dangerous wastes are crushed by the crusher 101 and enter a mixer 104, the fragments enter the blanking pit 102 after being fully mixed, the waste blades and the dangerous wastes are stirred and mixed by a grab bucket 105 and are sent to a stokehole feeding hopper 106, and then the mixture is sent to an incineration and melting disposal link by a stokehole pusher 107.
The mixture of waste blades and hazardous wastes is sent into a rotary kiln 201 through a stokehole pusher 107, the mixture is pyrolyzed and gasified under the action of high temperature in the rotary kiln 201, the reaction temperature of the mixture in the kiln is controlled to be 850-1000 ℃ by controlling the amount of air fed into the kiln, the mixture is pyrolyzed, gasified and combusted, the generated hot flue gas and unburnt mixed gas enter a secondary combustion chamber 202 to be fully combusted, the materials are continuously reacted and are gradually transferred to the kiln tail from the kiln head along with the continuous rotation of the rotary kiln 201, unburnt residues fall into a molten pool at the bottom of a plasma melting furnace 203, a plasma torch 205 generates high-temperature plasma arc to enable the unburnt slag to be completely melted and form a molten pool, the molten pool is discharged from a slag discharge port after accumulating to a certain amount, falls into a rapid cooling water tank 207 to form water quenching glass slag, and is fished out to a collection tank by a glass slag dragger 208, the temperature in the plasma melting furnace 203 is controlled to be 1300-1500-, the plasma furnace 203 discharges slag once every half hour.
Example 3
Referring to fig. 3-4, this embodiment differs from the above embodiments in that: the waste heat recovery module 301 comprises a waste heat boiler 303 and a waste heat power generation system 304, the waste heat boiler 303 is arranged on one side of the secondary combustion chamber 204, and one end of the waste heat boiler 303 is connected with the waste heat power generation system 304. The tail gas treatment module 302 comprises an SNCR denitration system 305, a quenching system 306, a dry deacidification tower 307, a cloth bag dust removal system 310 and a wet deacidification system 311, wherein an SNCR denitration injection system 305 is arranged in a cavity inside the waste heat boiler 303, the waste heat boiler 303 is connected with the quenching tower 306, and the dry deacidification tower 307 is arranged on one side of the quenching tower 305.
The upper side of the dry deacidification tower 307 is provided with a dry deacidification injection system 308 and an active carbon injection system 309, and one side of the dry deacidification tower 307 is provided with a bag-type dust remover 310. One side of the bag-type dust collector 310 is connected with a wet-type deacidification tower 311, one side of the wet-type deacidification tower 311 is connected with a wet-type electric dust collector 312, one end of the wet-type electric dust collector 312 is provided with a chimney 314, and the lower end of the chimney 314 is provided with an induced draft fan 313.
Specifically, the waste heat recovery module 301 includes a waste heat boiler 303 and a waste heat power generation system 304, the waste heat boiler 303 is disposed on one side of the secondary combustion chamber 204, and one end of the waste heat boiler 303 is connected to the waste heat power generation system 304. The second combustion chamber 204 discharges hot flue gas after full combustion, when the temperature of the flue gas is more than 1100 ℃, the hot flue gas enters the waste heat boiler 303, the waste heat boiler 303 absorbs heat, the temperature of the flue gas is reduced to 550-600 ℃, and the flue gas enters the tail gas purification system 304. The waste heat boiler 303 produces steam for drying materials in a plant area, heating the steam, heating in winter and the like, and the redundant steam can be generated through the waste heat power generation system 304 and be merged into service power, so that the comprehensive power consumption of the whole system is reduced.
Further, the tail gas treatment module 302 includes an SNCR denitration system 305, a quenching system 306, a dry deacidification tower 307, a bag dust removal system 310 and a wet deacidification system 311, wherein the SNCR denitration injection system 305 is disposed in an inner cavity of the exhaust-heat boiler 303, the exhaust-heat boiler 303 is connected to the quenching tower 306, and the dry deacidification tower 307 is disposed on one side of the quenching tower 305. The SNCR denitration spraying device 305 is arranged in the first chamber of the waste heat boiler 303, the denitration agent is sprayed in the area with the flue gas temperature of 850-. The 550-600 ℃ flue gas at the outlet of the waste heat boiler 303 is cooled to 180-200 ℃ through a quench tower system 307, so that the resynthesis of toxic gases such as dioxin is avoided; the cooled flue gas enters a dry-type deacidification tower 307 to react with sprayed slaked lime powder (sodium hydroxide powder can also be used) and activated carbon, so that part of acid gas, dioxin, heavy metal oxide and part of water vapor are removed.
Further, a dry deacidification injection system 308 and an activated carbon injection system 309 are arranged on the upper side of the dry deacidification tower 307, and a bag-type dust collector 310 is arranged on one side of the dry deacidification tower 307. One side of the bag-type dust collector 310 is connected with a wet-type deacidification tower 311, one side of the wet-type deacidification tower 311 is connected with a wet-type electric dust collector 312, one end of the wet-type electric dust collector 312 is provided with a chimney 314, and the lower end of the chimney 314 is provided with an induced draft fan 313. The flue gas enters a bag-type dust collector 310, and the small particle ash in the flue gas is filtered out by 99 percent, so that the content of the smoke dust in the flue gas is lower than 30mg/m 3; the flue gas passes through a wet-type deacidification tower 311 after coming out of a bag-type dust collector 310, 3-5% alkali liquor is sprayed into the wet-type deacidification tower 311 to further remove SO2, HCl, HF and other acidic gases, the deacidified flue gas enters a wet-type electric dust collector 312, dust particles with the particle size of below 0.1 mu m can be removed, and the water content is reduced, SO that the flue gas reaches the emission standard. Finally, the purified flue gas (the smoke content is lower than 10mg/m3) is sent into a chimney 314 to be discharged into the atmosphere under the action of an induced draft fan 313.
The rest of the structure is the same as in example 2.
The operation process is as follows: the second combustion chamber 204 discharges hot flue gas after full combustion, the hot flue gas enters a waste heat boiler 303, the waste heat boiler 303 absorbs heat, the temperature of the flue gas is reduced to 550-600 ℃, and the flue gas enters a tail gas purification system 302. An SNCR denitration injection device 305 is arranged in a first chamber of the waste heat boiler 303, and a denitration agent is injected in a selected area with the flue gas temperature of 850-. The 550-600 ℃ flue gas at the outlet of the waste heat boiler 303 is cooled to 180-200 ℃ by the quenching tower system 306, so that the resynthesis of toxic gases such as dioxin is avoided; the cooled flue gas enters a dry-type deacidification tower 307 to react with sprayed slaked lime powder (sodium hydroxide powder can also be used) and activated carbon to remove part of acid gas, dioxin, heavy metal oxide and part of water vapor; then the flue gas enters a bag-type dust collector 310, and the small particle ash in the flue gas is filtered out by 99 percent, so that the content of the smoke dust in the flue gas is lower than 30mg/m 3; the flue gas passes through a wet-type deacidification tower 311 after coming out of a bag-type dust collector 310, 3-5% alkali liquor is sprayed into the wet-type deacidification tower 311 to further remove SO2, HCl, HF and other acidic gases, the deacidified flue gas enters a wet-type electric dust collector 312, dust particles with the particle size of below 0.1 mu m can be removed, and the water content is reduced, SO that the flue gas reaches the emission standard. Finally, the purified flue gas (the smoke content is lower than 10mg/m3) is sent into a chimney 314 to be discharged into the atmosphere under the action of an induced draft fan 313.
It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. The utility model provides a rotary kiln and plasma melting furnace abandonment fan blade processing apparatus which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the pretreatment assembly (100) comprises a crusher (101), a blanking pit (102) and a feeding part (103), wherein the blanking pit (102) is arranged at the lower ends of the crusher (101) and the feeding part (103), and the feeding part (103) is arranged on one side of the crusher (101);
the incineration assembly (200) is arranged at the rear side of the pretreatment assembly (100) and comprises a rotary kiln (201), a secondary combustion chamber (202) arranged at the tail part of the rotary kiln (201) and a plasma melting furnace (203) arranged at the lower side of the secondary combustion chamber (202); and the number of the first and second groups,
the recovery assembly (300) is connected to one side of the incineration assembly (200) and comprises a waste heat recovery module (301) and a tail gas treatment module (302).
2. The apparatus for treating waste fan blades of a rotary kiln and a plasma melting furnace as claimed in claim 1, wherein: the crusher (101) is provided with a mixer (104) on the lower side, the feeding part (103) comprises a grab bucket (105), a stokehole feeding hopper (106) and a stokehole pusher (107), and the stokehole feeding hopper (106) is arranged on the upper side of the stokehole pusher (107).
3. The apparatus for treating waste fan blades of a rotary kiln and a plasma melting furnace as claimed in claim 2, wherein: the front end of the rotary kiln (201) is connected with a stokehold pusher (107), and a first combined burner (204) is arranged on one side.
4. The apparatus for treating waste fan blades of a rotary kiln and a plasma melting furnace as claimed in claim 3, wherein: 4 plasma torches (205) are uniformly distributed on the outer wall of the plasma melting furnace (203), a second combined burner (206) is arranged on the upper side of the second combustion chamber (202), and a slag discharge port (203a) is formed in the lower side of the plasma melting furnace (203).
5. The apparatus for treating waste fan blades of a rotary kiln and a plasma melting furnace as claimed in claim 4, wherein: the slag discharging port (203a) is provided with a rapid cooling water tank (207) and a glass slag dragveyer (208) at the lower side, and the glass slag dragveyer (208) is arranged at one side of the rapid cooling water tank (207) and is mutually connected with the rapid cooling water tank (207).
6. The rotary kiln and plasma melting furnace waste fan blade treatment device according to claim 2 or 5, characterized in that: the waste heat recovery module (301) comprises a waste heat boiler (303) and a waste heat power generation system (304), wherein the waste heat boiler (303) is arranged on one side of the secondary combustion chamber (202), and one end of the waste heat boiler (303) is connected with the waste heat power generation system (304).
7. The apparatus for treating waste fan blades of a rotary kiln and a plasma melting furnace according to claim 6, wherein: the tail gas treatment module (302) comprises an SNCR denitration system (305), a quenching system (306), a dry deacidification tower (307), a cloth bag dust removal system (310) and a wet deacidification system (311),
the waste heat boiler (303) is characterized in that an SNCR denitration injection system (305) is arranged in an inner cavity of the waste heat boiler (303), the waste heat boiler (303) is connected with a quenching tower (306), and a dry deacidification tower (307) is arranged on one side of the quenching tower (305).
8. The apparatus for treating waste fan blades of a rotary kiln and a plasma melting furnace as claimed in claim 7, wherein: the upper side of the dry deacidification tower (307) is provided with a dry deacidification injection system (308) and an active carbon injection system (309), and one side of the dry deacidification tower (307) is provided with a bag-type dust remover (310).
9. The apparatus for treating waste fan blades of a rotary kiln and a plasma melting furnace according to claim 8, wherein: the wet-type deacidification tower (311) is connected with on one side of sack cleaner (310), wet-type deacidification tower (311) one side is connected with wet-type electrostatic precipitator (312), wet-type electrostatic precipitator (312) one end is provided with chimney (314), chimney (314) lower extreme is provided with draught fan (313).
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