CN113803727B - High-efficient slope rotation burner who deals with solid useless - Google Patents

High-efficient slope rotation burner who deals with solid useless Download PDF

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Publication number
CN113803727B
CN113803727B CN202111161427.6A CN202111161427A CN113803727B CN 113803727 B CN113803727 B CN 113803727B CN 202111161427 A CN202111161427 A CN 202111161427A CN 113803727 B CN113803727 B CN 113803727B
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rotary furnace
furnace
rotary
feeding chamber
cylinder body
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CN113803727A (en
Inventor
陶从喜
沈序辉
何明海
梁乾
蒋文伟
王明
韦勇富
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China Resources Cement Technology R&D Co Ltd
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China Resources Cement Technology R&D Co Ltd
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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
    • F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • 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
    • F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel 
    • 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
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/22—Rotary drums; Supports therefor
    • 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
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/36—Arrangements of air or gas supply devices
    • 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
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
    • Y02P40/125—Fuels from renewable energy sources, e.g. waste or biomass

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Incineration Of Waste (AREA)

Abstract

The invention provides an inclined rotary combustion device for efficiently treating solid waste, and relates to the technical field of solid waste treatment. The inclined rotary combustion device for efficiently treating solid waste comprises a rotary furnace (1), a mixed feeding chamber (2), a feeder (3), a decomposing furnace (4) and a tertiary air main pipe (6), wherein the tail part of the rotary furnace (1) is connected with the mixed feeding chamber (2), and the head part of the rotary furnace is connected with the decomposing furnace (4); the top of the mixing feeding chamber (2) is provided with a feeder (3); the rotary furnace (1) comprises a rotary furnace cylinder body (101), a riding wheel device (102), a cold air jacket (105), an iron guard plate (106) and a feed back box (110); slope structures (5) are arranged between the rotary furnace (1) and the mixing feeding chamber (2) and between the rotary furnace (1) and the decomposing furnace (4) for transition, and sealing structures are arranged. The invention has stable and reliable operation, lower operation cost, strong adaptability of solid waste disposal, high burnout rate and can avoid secondary pollution.

Description

High-efficient slope rotation burner who deals with solid useless
Technical Field
The invention relates to the technical field of solid waste disposal, in particular to an inclined rotary type combustion device for efficiently disposing solid waste.
Background
When solid waste and household garbage are incinerated and disposed by utilizing an industrial kiln, in order to solve the problem that heterogeneous solid waste cannot be stably combusted, the heat value of materials entering a furnace is generally subjected to restrictive requirements, and targeted equipment structure development is carried out on areas which are dry, fired, combusted and burnt out so as to ensure the incineration disposal effect. The currently commonly used solid waste incineration disposal devices mainly have the following types:
(1) mechanical biological method + decomposing furnace: the method is characterized in that combustible components in solid waste are dehydrated and sorted by adopting a mechanical biological method, and then are enriched to prepare a Refuse Derived Fuel (hereinafter referred to as RDF), the particle size of the RDF is usually controlled to be less than or equal to 50 x 50mm, the RDF is directly put into a decomposing furnace for incineration disposal, part of residue generated by RDF combustion replaces raw materials for utilization, and part of sorted residue is subjected to landfill disposal. However, by using the method, the moisture directly influences the process of solid waste combustion in the decomposing furnace, the particle size influences the combustion effect, the deflagration phenomenon influences the stability of the decomposing furnace, the retention time of the waste in the furnace is short, and the post-combustion phenomenon is caused when partial large particles or flame-retardant substances are disposed, so that the incomplete combustion condition is easy to occur. The technical route has small application range, is only suitable for bulk, light and inflammable wastes, has large influence on the stable operation of kiln conditions, and the slag soil used as a substitute raw material carries organic components to influence the normal operation of raw material grinding and C1 and C2.
(2) Pyrolysis furnace + decomposing furnace technology: after the solid waste is simply dehydrated and coarsely crushed, the solid waste is sent into a pyrolysis gasification furnace through a sealed feeding device, a fluidized quartz sand layer is laid in the pyrolysis gasification furnace, the solid waste is heated, dried, gasified and heat-transferred in the fluidized quartz sand layer after being sent into the furnace, the solid waste combustible substances are converted into combustible smoke through a pyrolysis mode, and the combustible smoke is sent into a decomposition furnace for further incineration. And the residues cooled gradually in the fluidized quartz sand layer are sent into a raw material grinding system to be used as a substitute raw material after iron and metal are removed. By using the method, the thermal quality of gasified flue gas in the gasification furnace is not high, the thermal conversion efficiency of the gasified flue gas entering the decomposition furnace is about 30 percent, the solid waste quality has large influence on the pyrolysis process, necessary afterburning measures need to be configured, the control range of the temperature and the atmosphere in the pyrolysis process is relatively narrow, the application range is small, and the method is only suitable for scattered, light and inflammable wastes.
(3) The technology of the hot plate furnace and the decomposing furnace comprises the following steps: the solid useless through simple dehydration, after the coarse crushing, send into hot plate stove and burn the processing, there is the rotary furnace dish hot plate stove bottom, inside disposes refractory material, hot plate stove and decomposing furnace constitution are integrative, implant in decomposing furnace pyramis, the part of cement kiln system or whole tertiary air is rotatory about 270 hou shang and is gone into the decomposing furnace through the hot plate stove, gu useless, preheat the raw material and get into in the hot plate stove through different passageways and mix the back at the furnace dish surface burning with the tertiary air, scrape into the decomposing furnace through the scraper blade at the junction of hot plate stove and decomposing furnace unburnt material and lime-ash and further burn. When the method is used, the hot plate furnace is implanted into the conical part of the decomposing furnace, the effective volume and the stable control of the flow field of the decomposing furnace are adversely affected, the balance of an original burning system is broken to a certain extent, the control requirement is improved, high-moisture solid waste can be burnt on the surface of the hot plate furnace only in a fixed bed mode in the hot plate furnace, the burnout rate of materials entering the hot plate furnace is low, the working condition of the hot plate furnace is not easy to control when the heat value, moisture and ash content of the waste fluctuate greatly, and the coal consumption and the power consumption of a burning system are increased.
(4) The technology of the step furnace and the decomposing furnace: the simple dehydration of solid useless, after the coarse crushing, send into hot plate furnace and burn and deal with, reform transform in the stove tertiary air region, implant inclination in 12~15 ladder stove bottom the decomposing furnace, the furnace body part or whole tertiary air pass through the ladder stove, the ladder stove is sent into through sealed feed to solid useless, utilize the hydraulic means or the compressed air jetting device of ladder stove bottom, slide and the part slow movement that rolls on the ladder stove, the solid useless combustion temperature in the effect control ladder stove through tertiary air and partial hot raw material, it burns to fall into cement kiln system with unburnt material and lime-ash at the ladder stove end. When the method is used, the retention time of the materials strictly depends on the movement frequency of the grate at the bottom or the blowing frequency of compressed air, the solid waste materials can be ignited and combusted only in limited contact with tertiary air on the surface of the stepped furnace, the segregation phenomenon can occur along with the combustion, and the control requirement of the system is relatively high.
(5) Grate furnace and decomposing furnace technology: after the solid waste is simply dehydrated, the solid waste is sent into a grate furnace to be incinerated, the solid waste is pushed by a movable grate on the obliquely arranged grate, and is dried, heated and ignited slowly by primary air which is blown upwards from the bottom and preheated to 200-250 ℃, the combustion temperature of the grate is adjusted by controlling the proportion of combustion-supporting air, flue gas generated by combustion is sent into a decomposing furnace through a thermotechnical pipeline to be treated, and the slag is sent into a raw material mill to replace part of raw materials after being quenched and cooled. The technology adopts cold air as combustion-supporting air, water quenching slag, heat dissipation of a thermal pipeline introduced into a decomposing furnace and the like, so that the heat utilization efficiency of the system is reduced, solid waste is dried on the surface of a grate furnace and needs to be released by primary air and flame combustion together when being ignited, the ignition combustion of the solid waste is only carried out in a limited shallow space, and the burn-out can be realized by longer residence time.
Disclosure of Invention
The invention aims to systematically solve the problems in the traditional solid waste collaborative incineration disposal process, an inclined rotary combustion device (also called as a rotary furnace) for efficiently disposing the solid waste is additionally arranged at the bottom of a decomposition furnace of the current large-scale burning system, the fed solid waste is quickly dried and ignited by utilizing high-temperature tertiary air, stable burning is realized, the generated waste gas enters the decomposition furnace for continuous burning and decomposition, and the generated ash slag enters the decomposition furnace and then enters the rotary furnace for continuous burning and solidification. Compared with the existing various solid waste disposal devices (such as a gasification furnace, a mechanical biological method, a hot plate furnace, a step furnace, a grate furnace and the like), the inclined rotary combustion device for efficiently disposing solid waste provided by the invention has the unique advantages of relatively simple system, small occupied area, less investment, stable and reliable operation, lower operation cost, strong solid waste adaptability, high burnout rate and the like, can avoid secondary pollution, and simultaneously, the heat in the household waste can be used for replacing part of the coal. Through high-temperature incineration and high-temperature sintering of chamotte mineralization, the aims of decomposing, degrading, eliminating, inerting, stabilizing and the like of toxic characteristics of the household garbage are fulfilled. The combustible waste treated by the method has the unique advantages of waste reclamation, good and thorough treatment effect, no secondary pollution, environmental protection, product quality guarantee, utilization of the existing industrial facilities, no increase of occupied land, less investment, lower operating cost and the like.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a high-efficient slope rotation burner who deals with solid useless, includes the dore furnace, still includes rotation furnace, mixes feed chamber, batcher and tertiary air main pipe, wherein:
the tail part of the rotary furnace is connected with the mixing feeding chamber, and the head part of the rotary furnace is connected with the decomposing furnace;
a feeder is arranged at the top of the mixing feeding chamber;
the tertiary air branch pipe connected with the mixing feeding chamber is arranged on the tertiary air main pipe;
the tertiary air main pipe is communicated with the decomposing furnace;
the feeding machine is a horizontal and vertical bidirectional double-helix material conveyor;
the rotary furnace comprises a rotary furnace cylinder, a riding wheel device, a cold air jacket, an iron protecting plate and a feed back box;
slope structures are arranged between the rotary furnace and the mixing feeding chamber as well as between the rotary furnace and the decomposing furnace for transition, and sealing structures are arranged between the rotary furnace and the mixing feeding chamber;
and compressed air purging devices are arranged outside the slope-shaped structures.
Optionally or preferably, the rotary furnace cylinder body is of a cylindrical cylinder structure, and is obliquely installed and fixed on the base through a riding wheel device;
the cold air jacket and the iron protecting plate are both fixedly arranged at the head of the rotary furnace, and a material returning device and a cold air pipeline are arranged at the bottom of the head of the rotary furnace cylinder;
a material returning box is arranged at the outer edge of the tail part of the rotary furnace cylinder, an arc-shaped feeding tongue plate is arranged in the rotary furnace cylinder and close to the mixing feeding chamber, when a small amount of materials are scattered out of the feeding tongue plate, the materials fall into the material returning box, the materials are taken and scattered by the material returning box, and enter the furnace to be combusted under the action of tertiary air, so that the field material leakage is avoided;
and a friction ring is arranged at one end of the feed back box close to the mixing and feeding chamber.
Optionally or preferably, the number of the riding wheel devices is multiple, each riding wheel device comprises a driving riding wheel and a driven riding wheel, and each riding wheel device is provided with a rotary furnace driving device for driving;
the center of the rotary furnace cylinder body, the centers of the driving jockey wheels and the centers of the driven jockey wheels are in an isosceles triangle shape, each driving jockey wheel is arranged at the same side of the rotary furnace cylinder body, and each driven jockey wheel is arranged at the other side of the rotary furnace cylinder body, so that the uniform stress of the whole mechanism can be ensured;
and the base is also provided with a hydraulic wheel blocking device for controlling the play of the rotary furnace barrel.
Optionally or preferably, a plurality of piece-separating arc-shaped wear-resistant bushings and elastic bidirectional sealing laminations are further arranged outside the cold air sleeve, and the wear-resistant bushings, the sealing laminations, the cold air sleeve and the iron guard plate are matched with each other to seal the rotary furnace head and the decomposing furnace;
and the cold air pipeline is provided with a plurality of air outlets facing the direction of the decomposing furnace.
Optionally or preferably, the friction ring comprises a dynamic friction ring and a static friction ring, the dynamic friction ring is arranged on one side close to the feed back box, lubricating oil is coated between the dynamic friction ring and the static friction ring, a compression device is arranged outside the friction ring, the dynamic friction ring and the static friction ring can keep dynamic sealing, and the problem of poor sealing of the tail of the rotary furnace is solved;
the pressing device comprises an inverted V-shaped lever and a pin shaft; one end of the inverted V-shaped lever is provided with a balance weight, the other end of the inverted V-shaped lever is provided with a pressing roller, the pressing roller is in hard contact with the static friction ring, and the top point of the inverted V-shaped lever is fixed on an external fixed seat through a pin shaft.
Optionally or preferably, the cylinder wall of the rotary kiln cylinder body comprises a heat insulation layer, a pouring layer and an anti-skinning layer;
the pouring layer is provided with a plurality of anchoring pieces connected to the heat insulation layer, and the anti-skinning layer and the heat insulation layer are fixedly connected through a plurality of heat-resistant bolts and are made of microcrystalline ceramic anti-skinning materials;
the spiral-flow type masonry refractory bricks are arranged on the inner side of the cylinder wall of the rotary furnace cylinder body, so that the advancing speed of materials is favorably slowed down, the time of solid wastes in the rotary furnace is prolonged, and the burnout rate of the solid wastes is improved;
a layer of corrosion-resistant lining plate with the thickness of 1-2 mm is arranged between the wall of the rotary furnace cylinder and the refractory bricks, so that harmful elements can be effectively isolated, and the rotary furnace cylinder can be better protected.
Optionally or preferably, the tertiary air branch pipe is connected to the upper part of the mixing feeding chamber in a downward inclined manner, the bottom of the mixing feeding chamber is in a slope shape and is connected to the tail part of the rotary furnace in a downward inclined manner, and the tertiary air branch pipe, the bottom of the mixing feeding chamber and the tail part of the rotary furnace form a downward inclined straight line;
the slope-shaped part at the bottom of the mixing feeding chamber is made of a heat-resistant steel plate which can resist high temperature of more than 1050 ℃, and other areas are made of nano heat-insulating materials and high-strength mullite through pouring; the bottom of the mixing feeding chamber is in a slope shape and is 50-60 degrees on the horizontal plane
Optionally or preferably, the feeder comprises a horizontal screw conveyor, a horizontal feeding motor, a vertical screw conveyor and a mounting seat;
the feeder is fixedly arranged at the top of the mixing feeding chamber through a mounting seat;
two horizontal spiral reamers are arranged in each horizontal spiral conveyor and are driven by two horizontal feeding motors;
the vertical screw conveyer is internally provided with two vertical screw reamers which are driven by two vertical feeding motors, the bottom of the vertical screw conveyer is provided with a feeder discharge port, the horizontal screw conveyer is arranged on the upper part of the vertical screw conveyer, the top of one end, far away from the vertical screw conveyer, of the horizontal screw conveyer is provided with a feeder feed port, the self-extrusion effect of materials can be utilized to realize stable and forced sealing of the feed, and the doping amount of cold air in the solid waste feeding process is reduced.
Optionally or preferably, the tertiary air branch pipe is further provided with a raw material feeding port.
Optionally or preferably, an electric gate valve II is arranged on the tertiary air main pipe, and an electric gate valve I is arranged on the tertiary air branch pipe.
Based on the technical scheme, the following technical effects can be generated:
the invention provides an inclined rotary combustion device for efficiently treating solid waste, which is suitable for treating various solid wastes. The beneficial effects of the invention include:
(1) the invention can ensure that the water in the solid waste is fully contacted with high-temperature air for rapid drying and dehydration, and realize early ignition and combustion;
(2) the invention utilizes tertiary air to support combustion, can ensure that most of organic matters are stably combusted in the rotary furnace, and can be thoroughly decomposed and combusted after entering the decomposing furnace to release heat;
(3) the rotary furnace can be arranged on the existing tertiary air pipeline and is taken as an extension pipeline of tertiary air, the newly added rotary furnace system has small influence on the original firing system, and the rotary furnace system can be quickly switched back to the original system to ensure stable production operation if production needs;
(4) according to the invention, raw carbonate is added into the raw material feed port, and the coupling balance between the raw carbonate desorption heat and the solid waste combustion heat release is utilized to control the temperature in the rotary kiln, so that not only is stable combustion realized, but also the liquid phase quantity proportion of the slag component can be adjusted to control the ash kiln operation;
(5) the two ends of the rotary furnace end are respectively provided with a special sealing device, so that air leakage can be reduced, and combustion can be carried out at negative pressure;
(6) the rotary furnace and the mixing feeding chamber, and the rotary furnace and the decomposing furnace are respectively provided with a slope structure for transition, and the rotary furnace and the decomposing furnace are respectively provided with a compressed air blowing device, so that accumulated materials possibly existing in a slope can be treated, and the materials can be ensured to smoothly enter the rotary furnace and the decomposing furnace to finish calcination.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of the installation of the present invention;
FIG. 2 is a schematic structural view (semi-sectional view) of a rotary kiln of the present invention;
FIG. 3 is a schematic structural view (front view) of the feeder of the present invention;
FIG. 4 is a schematic structural view (left side view) of the feeder of the present invention;
FIG. 5 is a schematic structural view of a spiral-flow masonry refractory brick of the present invention;
in the figure: 1-rotary kiln, 2-mixing feeding chamber, 3-feeding machine, 4-decomposing furnace, 5-slope structure, 6-tertiary air main pipe, 7-tertiary air branch pipe, 8-raw material feeding port, 9-electric gate valve I, 10-electric gate valve II, 101-rotary kiln barrel, 102-riding wheel device, 103-base, 104-rotary kiln driving device, 105-cold air jacket, 106-iron protecting plate, 107-material returning device, 108-cold air pipeline, 109-feeding tongue plate, 110-material returning box, 111-friction ring, 112-compacting device, 301-horizontal screw conveyor, 302-feeding machine feeding port, 303-horizontal feeding motor, 304-vertical screw conveyor, 305-vertical feeding motor, 306-feeding machine discharging port, 307-mounting seat.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Example 1:
as shown in fig. 1-5:
the embodiment provides a high-efficient slope rotation burner who deals with solid useless, including dore furnace 4, still include rotation furnace 1, mix feeding chamber 2, batcher 3 and tertiary air person in charge 6, wherein:
the tail part of the rotary furnace 1 is connected with a mixing feeding chamber 2, and the head part is connected with a decomposing furnace 4;
the top of the mixing feeding chamber 2 is provided with a feeder 3;
the tertiary air main pipe 6 is provided with a tertiary air branch pipe 7 connected with the mixing feeding chamber 2;
the tertiary air main pipe 6 is communicated with the decomposing furnace 4;
the feeder 3 is a horizontal and vertical bidirectional double-helix material conveyor;
the rotary furnace 1 comprises a rotary furnace cylinder body 101, a riding wheel device 102, a cold air jacket 105, an iron guard plate 106 and a feed back box 110;
slope structures 5 are arranged between the rotary furnace 1 and the mixing feeding chamber 2 as well as between the rotary furnace 1 and the decomposing furnace 4 for transition, and sealing structures are arranged;
and compressed air purging devices are arranged outside the slope-shaped structures 5.
In this embodiment, the rotary furnace cylinder 101 is a cylindrical cylinder structure, and the rotary furnace cylinder 101 is obliquely installed and fixed on the base 103 through the riding wheel device 102; the cold air jacket 105 and the iron protecting plate 106 are both fixedly arranged at the head of the rotary furnace 1, and the bottom of the head of the rotary furnace cylinder body 101 is provided with a material returning device 107 and a cold air pipeline 108; a feed back box 110 is arranged at the outer edge of the tail part of the rotary furnace cylinder body 101; an arc-shaped feeding tongue plate 109 is arranged in the rotary furnace cylinder body 101 and close to the mixing feeding chamber 2; the end of the feed back box 110 close to the mixing and feeding chamber 2 is provided with a friction ring 111.
In this embodiment, the number of the riding wheel devices 102 is two, each riding wheel device 102 includes a driving riding wheel and a driven riding wheel, and each riding wheel device 102 is provided with a rotary furnace driving device 104 for driving; the centers of the rotary furnace cylinder body 101, the centers of the driving riding wheels and the centers of the driven riding wheels are in an isosceles triangle shape, each driving riding wheel is arranged at the same side of the rotary furnace cylinder body 101, and each driven riding wheel is arranged at the other side of the rotary furnace cylinder body 101; and a hydraulic wheel blocking device for controlling the rotary furnace cylinder body 101 to move is arranged on the base 103.
In this embodiment, the cold air jacket 105 is further provided with a plurality of split arc-shaped wear-resistant bushings and an elastic bidirectional sealing lamination, and the wear-resistant bushings, the sealing lamination, the cold air jacket 105 and the iron guard plate 106 are matched with each other to seal the head of the rotary furnace 1 and the decomposing furnace 4; the cold air duct 108 is provided with a plurality of air outlets facing the direction of the decomposing furnace 4.
In this embodiment, the friction ring 111 includes a dynamic friction ring and a static friction ring, the dynamic friction ring is disposed at a side close to the material return box 110, lubricating oil is coated between the dynamic friction ring and the static friction ring, and a compression device 112 is disposed outside the friction ring 111; the pressing device 112 comprises an inverted V-shaped lever and a pin shaft; one end of the inverted V-shaped lever is provided with a balance weight, the other end of the inverted V-shaped lever is provided with a pressing roller, the pressing roller is in hard contact with the static friction ring, and the top point of the inverted V-shaped lever is fixed on an external fixed seat through a pin shaft.
In this embodiment, the cylinder wall of the rotary furnace cylinder 101 includes a heat insulation layer, a pouring layer and an anti-skinning layer; the pouring layer is provided with a plurality of anchoring pieces connected to the heat insulation layer, and the anti-skinning layer and the heat insulation layer are fixedly connected through a plurality of heat-resistant bolts; the anti-skinning layer is made of a microcrystalline ceramic anti-skinning material; the inner side of the cylinder wall of the rotary furnace cylinder body 101 is provided with a spiral-flow type masonry refractory brick; and a layer of corrosion-resistant lining plate with the thickness of 1-2 mm is arranged between the cylinder wall of the rotary furnace cylinder body 101 and the refractory bricks.
In the embodiment, the tertiary air branch pipe 7 is obliquely and downwards connected to the upper part of the mixing feeding chamber 2, the bottom of the mixing feeding chamber 2 is in a slope shape, and is obliquely and downwards connected to the tail part of the rotary furnace 1, and the tertiary air branch pipe 7, the bottom of the mixing feeding chamber 2 and the tail part of the rotary furnace 1 form an obliquely and downwards straight line; the slope-shaped part at the bottom of the mixing feeding chamber 2 is made of a heat-resistant steel plate which can resist high temperature of more than 1050 ℃, and other areas are made of nano heat-insulating materials and high-strength mullite through pouring; the bottom of the mixing feeding chamber 2 is in a slope shape and is 50-60 degrees on the horizontal plane.
In this embodiment, the feeder 3 includes a horizontal screw conveyor 301, a horizontal feeding motor 303, a vertical feeding motor 305, a vertical screw conveyor 304, and a mounting seat 307; the feeder 3 is fixedly arranged at the top of the mixing feeding chamber through a mounting seat 307; two horizontal spiral reamers are arranged in each horizontal spiral conveyor 301 and driven by two horizontal feeding motors 303; all be equipped with two vertical screw reamers in the vertical screw conveyer 304, by two vertical feeding motor 305 drives, batcher discharge gate 306 has been seted up to vertical screw conveyer 304 bottom, horizontal screw conveyer 301 is installed on the upper portion of vertical screw conveyer 304, batcher feed inlet 302 has been seted up to the top of horizontal screw conveyer 301 keep away from the one end of vertical screw conveyer 304.
In this embodiment, the tertiary air branch pipe 7 is further provided with a raw material feeding port 8.
In this embodiment, be equipped with two 10 electric gate valves on the tertiary air is responsible for 6, be equipped with one 9 electric gate valves on the tertiary air is in charge of 7.
The embodiment has the following advantages:
(1) the embodiment can ensure that the moisture in the solid waste is fully contacted with the high-temperature air for rapid drying and dehydration, and realize early ignition and combustion;
(2) in the embodiment, the tertiary air is used for supporting combustion, so that most of organic matters can be stably combusted in the rotary furnace, and can be thoroughly decomposed and combusted after entering the decomposing furnace to release heat;
(3) the rotary furnace of the embodiment can be configured on the existing tertiary air pipeline and is taken as an extension pipeline of tertiary air, the newly added rotary furnace system has little influence on the original firing system, and the rotary furnace can be quickly switched back to the original system to ensure stable production operation if production needs;
(4) in the embodiment, the temperature in the rotary furnace is controlled by adding the raw carbonate into the raw material feed port and utilizing the coupling balance between the raw carbonate desorption heat and the solid waste combustion heat release, so that not only can stable combustion be realized, but also the liquid phase quantity proportion can be controlled by adjusting the slag components, and the ash kiln operation can be realized;
(5) the two ends of the rotary furnace end and the tail of the rotary furnace are respectively provided with a special sealing device, so that air leakage can be reduced, and combustion can be carried out under negative pressure;
(6) the slope structures are arranged between the rotary furnace and the mixing feeding chamber as well as between the rotary furnace and the decomposing furnace for transition, and the compressed air blowing devices are arranged for processing accumulated materials possibly existing in a slope, so that the materials can smoothly enter the rotary furnace and the decomposing furnace to finish calcination.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. The utility model provides an incline rotation burner that admittedly useless is dealt with to high efficiency, includes that dore furnace (4) and tertiary air are responsible for (6), tertiary air is responsible for (6) and is linked together with dore furnace (4), its characterized in that: still include rotary furnace (1), mix feed chamber (2) and batcher (3), wherein:
the tail part of the rotary furnace (1) is connected with the mixing feeding chamber (2), and the head part of the rotary furnace is connected with the decomposing furnace (4); a feeder (3) is arranged at the top of the mixing feeding chamber (2); the tertiary air branch pipe (7) connected with the mixing feeding chamber (2) is arranged on the tertiary air main pipe (6), a raw material feeding port (8) is arranged on the tertiary air branch pipe (7), and the raw material feeding port (8) is used for adding raw material carbonate;
the feeding machine (3) is a horizontal and vertical bidirectional double-helix material conveyor;
the rotary furnace (1) comprises a rotary furnace cylinder body (101), a riding wheel device (102), a cold air sleeve (105), an iron guard plate (106) and a material return box (110), wherein the rotary furnace cylinder body (101) is obliquely installed and fixed on a base (103) through the riding wheel device (102), and the base (103) is provided with a hydraulic wheel blocking device for controlling the rotary furnace cylinder body (101) to move; the cold air jacket (105) and the iron guard plate (106) are both fixedly arranged at the head of the rotary furnace (1), and a material return box (110) is arranged at the outer edge of the tail part of the rotary furnace cylinder body (101); an arc-shaped feeding tongue plate (109) is arranged in the rotary furnace cylinder body (101) and close to the mixing feeding chamber (2);
slope-shaped structures (5) are arranged between the rotary furnace (1) and the mixed feeding chamber (2) and between the rotary furnace (1) and the decomposing furnace (4) for transition, and sealing structures are arranged;
a compressed air blowing device is arranged outside the slope-shaped structure (5);
the inner side of the cylinder wall of the rotary furnace cylinder body (101) is provided with a spiral-flow masonry refractory brick, and a layer of corrosion-resistant lining plate with the thickness of 1-2 mm is arranged between the cylinder wall and the refractory brick.
2. The inclined rotary combustion device for efficiently disposing solid waste as claimed in claim 1, wherein: the rotary furnace cylinder body (101) is of a cylindrical cylinder structure, and a material returning device (107) and a cold air pipeline (108) are arranged at the bottom of the head part of the rotary furnace cylinder body (101); one end of the material return box (110) close to the mixing feeding chamber (2) is provided with a friction ring (111).
3. The inclined rotary combustion device for efficiently disposing solid waste as claimed in claim 2, wherein: the number of the riding wheel devices (102) is multiple, each riding wheel device (102) comprises a driving riding wheel and a driven riding wheel, and each riding wheel device (102) is provided with a rotary furnace driving device (104) for driving; the centers of the rotary furnace cylinder body (101), the centers of the driving riding wheels and the centers of the driven riding wheels are isosceles triangles, each driving riding wheel is arranged at the same side of the rotary furnace cylinder body (101), and each driven riding wheel is arranged at the other side of the rotary furnace cylinder body (101).
4. The inclined rotary combustion device for efficiently disposing solid waste as claimed in claim 2, wherein: the cooling air sleeve (105) is also externally provided with a plurality of split arc-shaped wear-resistant bushings and elastic bidirectional sealing laminations, and the wear-resistant bushings, the sealing laminations, the cooling air sleeve (105) and the iron protecting plate (106) are matched with each other to seal the head of the rotary furnace (1) and the decomposing furnace (4); and a plurality of air outlets facing the direction of the decomposing furnace (4) are formed in the cold air pipeline (108).
5. The inclined rotary combustion device for efficiently disposing solid waste as claimed in claim 2, wherein: the friction ring (111) comprises a dynamic friction ring and a static friction ring, the dynamic friction ring is arranged on one side close to the feed back box (110), lubricating oil is coated between the dynamic friction ring and the static friction ring, and a compression device (112) is arranged outside the friction ring (111); the pressing device (112) comprises an inverted V-shaped lever and a pin shaft; one end of the inverted V-shaped lever is provided with a balance weight, the other end of the inverted V-shaped lever is provided with a pressing roller, the pressing roller is in hard contact with the static friction ring, and the top point of the inverted V-shaped lever is fixed on an external fixed seat through a pin shaft.
6. The inclined rotary type combustion device for efficiently disposing solid wastes as claimed in claim 2, wherein: the cylinder wall of the rotary furnace cylinder body (101) comprises a heat insulation layer, a pouring layer and an anti-skinning layer; the pouring layer is provided with a plurality of anchoring pieces connected to the heat insulation layer, and the anti-skinning layer and the heat insulation layer are fixedly connected through a plurality of heat-resistant bolts; the anti-skinning layer is made of a microcrystalline ceramic anti-skinning material.
7. The inclined rotary combustion device for efficiently disposing solid waste as claimed in claim 1, wherein: the tertiary air branch pipe (7) is connected to the upper part of the mixing feeding chamber (2) in a downward inclined manner, the bottom of the mixing feeding chamber (2) is in a slope shape, the tertiary air branch pipe is connected to the tail part of the rotary furnace (1) in a downward inclined manner, and the tertiary air branch pipe (7), the bottom of the mixing feeding chamber (2) and the tail part of the rotary furnace (1) form a downward inclined straight line;
the slope-shaped part at the bottom of the mixing feeding chamber (2) is made of a heat-resistant steel plate which can resist the high temperature of more than 1050 ℃, and other areas are made of nano heat-insulating materials and high-strength mullite through pouring; the bottom of the mixing feeding chamber (2) is in a slope shape and is 50-60 degrees on the horizontal plane.
8. The inclined rotary type combustion device for efficiently disposing solid wastes according to claim 1, wherein: the feeding machine (3) comprises a horizontal spiral conveyor (301), a horizontal feeding motor (303), a vertical feeding motor (305), a vertical spiral conveyor (304) and a mounting seat (307); the feeder (3) is fixedly arranged at the top of the mixing feeding chamber through a mounting seat (307); two horizontal spiral reamers are arranged in each horizontal spiral conveyor (301) and are driven by two horizontal feeding motors (303); all be equipped with two vertical screw reamers in vertical screw conveyer (304), by two vertical feeding motor (305) drives, batcher discharge gate (306) have been seted up to vertical screw conveyer (304) bottom, horizontal screw conveyer (301) are installed on the upper portion of vertical screw conveyer (304), batcher feed inlet (302) have been seted up at the top of the one end that vertical screw conveyer (304) were kept away from to horizontal screw conveyer (301).
9. The inclined rotary combustion device for efficiently disposing solid waste as claimed in claim 1, wherein: and the tertiary air main pipe (6) is provided with a second electric gate valve (10), and the tertiary air branch pipe (7) is provided with a first electric gate valve (9).
CN202111161427.6A 2021-09-30 2021-09-30 High-efficient slope rotation burner who deals with solid useless Active CN113803727B (en)

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CN115307152A (en) * 2022-07-22 2022-11-08 华润水泥技术研发（广西）有限公司 Method for treating solid waste by applying tertiary air

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EP2759793A1 (en) * 2013-01-29 2014-07-30 Alite GmbH Method and apparatus for providing heat to a calciner of a cement clinker plant
CN203478937U (en) * 2013-09-22 2014-03-12 成都和时机电设备有限公司 Spring ejector rod type graphite block sealing device based on rotary kiln
CN208091198U (en) * 2018-04-09 2018-11-13 绵阳九方环保节能科技有限公司 A kind of rotary kiln end new type sealing device
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