CN113606592A - Hazardous waste slag online drying device and drying method - Google Patents

Hazardous waste slag online drying device and drying method Download PDF

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Publication number
CN113606592A
CN113606592A CN202111037644.4A CN202111037644A CN113606592A CN 113606592 A CN113606592 A CN 113606592A CN 202111037644 A CN202111037644 A CN 202111037644A CN 113606592 A CN113606592 A CN 113606592A
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CN
China
Prior art keywords
slag
drying
combustion chamber
hazardous waste
waste slag
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Pending
Application number
CN202111037644.4A
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Chinese (zh)
Inventor
朱江
周宗贤
马圣平
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Shencai Technology Co Ltd
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Shencai Technology Co Ltd
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Filing date
Publication date
Application filed by Shencai Technology Co Ltd filed Critical Shencai Technology Co Ltd
Priority to CN202111037644.4A priority Critical patent/CN113606592A/en
Publication of CN113606592A publication Critical patent/CN113606592A/en
Pending legal-status Critical Current

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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
    • F23G5/08—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
    • 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
    • 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
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • 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
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
    • F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/02—Applications of driving mechanisms, not covered by another subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/04—Agitating, stirring, or scraping devices

Abstract

The invention discloses an online drying device and an online drying method for hazardous waste slag. The online drying device of danger waste slag includes: the second combustion chamber is used for burning chemical waste materials, and the water quenching slag extractor is arranged below the second combustion chamber and used for receiving slag discharged by the second combustion chamber; the drying equipment is at least partially arranged in the secondary combustion chamber so as to dry the materials in the drying equipment by utilizing the heat in the secondary combustion chamber; and the drying equipment is connected with the water quenching slag extractor so that the water quenching slag extractor sends slag into the drying equipment for drying. The invention provides the hazardous waste slag on-line drying device and the hazardous waste slag on-line drying method which are low in cost, energy-saving, emission-reducing, less in pollution and simple in structure.

Description

Hazardous waste slag online drying device and drying method
Technical Field
The invention relates to the technical field of furnace slag drying, in particular to an online drying device and an online drying method for hazardous waste furnace slag.
Background
In the process of burning dangerous waste in a rotary kiln and a second combustion chamber, chemical waste is burned into dangerous waste slag after being burned in the rotary kiln and the second combustion chamber, the majority of the dangerous waste slag is processed in a water quenching slag discharging mode, namely a water quenching slag discharging machine is arranged below the second combustion chamber, the slag is discharged from the water quenching slag discharging machine and then is conveyed by a small chain plate machine and then is directly bagged as secondary dangerous waste to be put in storage. The water content of the filtered water of the water quenching slag extractor is about 40 percent, namely the hazardous waste slag contains about 40 percent of water. Such high slag moisture content greatly increases the landfill cost of the slag.
At present, the conventional method is that the packaged water-containing slag is directly sent to a dangerous waste landfill site for landfill after standing and filtering in a storehouse, and the water phase which can be discharged by standing is quite low, so the landfill cost is higher, and the economic benefit of an incineration unit is influenced. And a slag drying line is additionally built in a factory for some incineration enterprises to dry the slag with high water content, so that the landfill cost is reduced.
However, the newly-built slag drying line has the following problems:
1. the newly-built slag drying line needs to be subjected to environmental evaluation and approval, and has a long period and a complex procedure;
2. a drying flue gas treatment system needs to be additionally built, and standard emission is guaranteed;
3. the newly-built slag drying line occupies a large area, and the early-stage investment cost and the later-stage operation cost are both high;
4. a new sewage draining outlet is needed, so that the environmental protection pressure is high;
5. in the operation process, additionally adding a heat source (steam, hot air and the like) to dry the slag;
6. the slag has the transportation link in water quenching slag extractor to drying system, increases the labour and has secondary pollution risk etc..
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In order to solve the technical problems, the invention provides the hazardous waste slag online drying device and the hazardous waste slag online drying method which are low in cost, energy-saving, emission-reducing, less in pollution and simple in structure.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an online drying device of danger waste slag, includes:
the second combustion chamber is used for burning chemical waste;
the water quenching slag extractor is arranged below the second combustion chamber and is used for receiving slag discharged from the second combustion chamber;
the drying equipment is at least partially arranged in the secondary combustion chamber so as to dry the materials in the drying equipment by utilizing the heat in the secondary combustion chamber; and the drying equipment is connected with the water quenching slag extractor so that the water quenching slag extractor sends slag into the drying equipment for drying.
As an alternative of the above-mentioned dangerous waste slag on-line drying device, the drying equipment is a first screw conveyer.
As an alternative of the dangerous waste slag online drying device, the first spiral conveyer comprises a preheating section, a high-temperature drying section and a discharging section which are sequentially arranged, the preheating section and the discharging section are arranged outside the secondary combustion chamber, and the high-temperature drying section is arranged inside the secondary combustion chamber.
As an alternative of the above-mentioned dangerous waste slag on-line drying device, a heating coil is arranged outside the preheating section.
As an alternative of the above-mentioned dangerous waste slag on-line drying device, the high-temperature drying section is in a U-shaped tubular shape, and the top of the high-temperature drying section is open.
As an alternative of the dangerous waste slag online drying device, a cooling sleeve is sleeved on the periphery of the discharging section or a cooling interlayer is arranged on the outer wall of the discharging section.
As an alternative of the above-mentioned online drying device for hazardous waste slag, the online drying device for hazardous waste slag further comprises:
and the conveying mechanism is used for conveying the slag in the water quenching slag extractor to the drying equipment.
As an alternative of the above-mentioned online drying device for hazardous waste slag, the conveying mechanism comprises a second screw conveyor and/or a chain plate machine.
As an alternative of the above-mentioned online drying device for hazardous waste slag, the online drying device for hazardous waste slag further comprises:
and the rotary kiln is arranged on the second combustion chamber and is communicated with the second combustion chamber.
An online drying method for hazardous waste slag comprises the following steps:
and introducing the dangerous waste slag from the water quenching slag extractor below the secondary combustion chamber into the secondary combustion chamber, and drying the dangerous waste slag by using the high temperature of the secondary combustion chamber.
The invention has the advantages that: at least part of the drying equipment is arranged in the secondary combustion chamber, the dangerous waste slag is dried by using high temperature in the secondary combustion chamber, the dangerous waste slag is discharged from the secondary combustion chamber and is directly conveyed to the drying equipment after being quenched by water and discharged by a water quenching slag extractor, the slag is dried by using the secondary combustion chamber, a heating source is not required to be added, a drying line is not required to be newly built, and the cost is saved. Meanwhile, the online drying is realized, the secondary slag transportation link is reduced, the labor and transportation cost is saved, the risk of secondary pollution is reduced, a newly-added drain outlet is not needed, and the pollution is also reduced. The whole drying device has simple structure and small occupied area. The invention can reduce the water content of the slag with the water content of about 40 percent to about 5 percent within 5 to 10 minutes, and has higher drying efficiency.
Drawings
FIG. 1 is a schematic structural diagram of an online drying device for hazardous waste slag in an embodiment of the invention;
FIG. 2 is a schematic view of a part of the structure of an online drying device for hazardous waste slag in the embodiment of the invention;
FIG. 3 is a schematic structural diagram of another view of the hazardous waste slag on-line drying device in the embodiment of the invention;
FIG. 4 is a schematic top view of the hazardous waste slag on-line drying device in the embodiment of the invention.
In the figure:
100. a rotary kiln; 200. a second combustion chamber; 300. a water quenching slag extractor; 400. a drying device; 410. a preheating section; 411. a heating coil; 420. a high-temperature drying section; 430. a discharging section; 431. a cooling jacket; 432. a coolant inlet; 433. a coolant outlet; 500. a slag receiving box; 600. a conveying mechanism; 610. a second screw conveyor; 620. chain trigger.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The invention provides an on-line drying device for hazardous waste slag, which is mainly used for drying the hazardous waste slag of a rotary kiln-secondary combustion chamber hazardous waste incineration line. Referring to fig. 1 to 4, the apparatus for drying hazardous waste slag on line includes a rotary kiln 100, a secondary combustion chamber 200, a water quenching slag extractor 300 and a drying device 400. The rotary kiln 100 is disposed on the second combustion chamber 200, and the rotary kiln 100 is communicated with the second combustion chamber 200. The chemical waste is burned in the rotary kiln 100 and the secondary combustion chamber 200 in sequence. As shown in fig. 3 and 4, the rotary kiln 100 is rotated at the time of incineration so that the chemical waste is sufficiently incinerated in the rotary kiln 100. The water quenching slag extractor 300 is arranged below the second combustion chamber 200 to receive slag discharged from the second combustion chamber 200. After being incinerated in the secondary combustion chamber 200, the chemical waste enters a water quenching slag extractor 300, and hazardous waste slag is quenched in a water quenching slag tapping mode.
As introduced in the background art, in the prior art, hazardous waste slag quenched by the water quenching slag extractor 300 is left to stand and buried, or a drying line is additionally constructed, and the quenched hazardous waste slag is packed and then sent to the drying line for drying. The direct landfill mode landfill cost is high, and the stoving line of building in addition also needs higher cost, needs to increase the heating source in addition and dries, and area is big, has secondary pollution's risk.
In the invention, the slag is dried, but no additional heat source is needed, the drying equipment 400 is arranged in the secondary combustion chamber 200, the slag is dried by utilizing the high temperature of the secondary combustion chamber 200, the temperature in the secondary combustion chamber 200 is 800-1000 ℃, the drying speed is high, the drying efficiency is high, and the moisture of the slag with the moisture content of about 40 percent can be reduced to about 5 percent within 5-10 minutes. The drying is a general term for reducing the water content, and in the present invention, the drying of the slag by the drying equipment 400 means that the drying equipment 400 reduces the water content of the slag, and the water content of the slag with the water content of about 40% can be reduced to about 5% within 5-10 minutes. The drying apparatus 400 may be completely installed inside the second combustion chamber 200, or may be only partially located inside the second combustion chamber 200. The drying apparatus 400 is connected to the water quenching slag machine 300 so that the water quenching slag machine 300 feeds the slag into the drying apparatus 400 for drying. That is to say, the slag does not need the packing bagging-off from the water quenching mucking machine 300 back of quenching, but directly carries and is dried in being located the drying equipment 400 of second combustion chamber 200, has realized online stoving, has promoted drying efficiency, has reduced packing and cost of transportation, simultaneously, makes entire system wholeness better, and the structure is retrencied, and area is little. In addition, the problem of secondary pollution is also avoided by online drying, waste gas generated by drying can be discharged together with waste gas in the secondary combustion chamber 200, energy is saved, emission is reduced, and the environment-friendly effect is better.
The selectivity of the drying apparatus 400 is high as long as the slag is delivered to the second combustion chamber 200 to be dried and the dried slag is output. In one embodiment, as shown in fig. 1 and 2, the drying apparatus 400 employs a first screw conveyor, and further, the first screw conveyor may be a shaftless screw conveyor, for example, although other types of screw conveyors may be employed. The spiral of shaftless screw conveyer has superstrong wearability and durability, long service life, and antiwind nature is strong, environmental protection can the good, the torque is big, the energy consumption is low, the conveying capacity is big, consequently preferred shaftless screw conveyer. The slag moves in the first screw conveyer along the conveying direction of the first screw conveyer, passes through the interior of the second combustion chamber 200, is dried, and can be continuously output to the exterior of the second combustion chamber 200 by the first screw conveyer. And the volume of the spiral conveyor is small, and the transmission efficiency is high. Meanwhile, the existing screw conveyor is directly used as the drying device 400, the drying device 400 does not need to be additionally designed, and the cost can be reduced.
As shown in fig. 1 and 3, the drying apparatus 400 is disposed in the second combustion chamber 200 at a position laterally below the rotary kiln 100, such that the drying apparatus 400 is installed in the second combustion chamber 200 at a lower position, and is dried by using the heat radiation environment at the bottom of the second combustion chamber 200, the heat radiation environment at the bottom of the second combustion chamber 200 has a temperature as high as 850 ℃, and the moisture content of the slag with a moisture content of about 40% can be reduced to about 5% within 5-10 minutes.
In the present invention, referring to fig. 1 and fig. 2, the first screw conveyor includes a preheating section 410, a high temperature drying section 420 and a discharging section 430, which are sequentially arranged, the preheating section 410 and the discharging section 430 are disposed outside the secondary combustion chamber 200, and the high temperature drying section 420 is disposed inside the secondary combustion chamber 200. That is, in the present invention, a portion (high temperature drying section 420) of the first screw conveyor is disposed inside the second combustion chamber 200, and the other portion (preheating section 410 and discharging section 430) is disposed outside the second combustion chamber 200. The preheating section 410 is used for preheating slag, and the operation load of the first screw conveyor is reduced. The high-temperature drying section 420 is located in the second combustion chamber 200 and used for drying the slag at a high temperature. The discharging section 430 is used for cooling and discharging the dried slag. As shown in fig. 1 and 2, a slag receiving box 500 is placed below the end of the discharge section 430.
The preheating section 410 preheats the slag in a preheating manner. There are many preheating methods, for example, electric heating, hydrothermal heating, and gas heating. In the present invention, as shown in fig. 2, a heating coil 411 is disposed outside the preheating stage 410, and the heating coil 411 is attached to the outer surface of the preheating stage 410. Hot steam can be introduced into the heating coil 411 to preheat the slag, which can be preheated to about 160 ℃. The heating coil 411 can primarily dry the slag close to the spiral pipe wall of the preheating section 410, effectively prevent the slag from being bonded in the spiral pipe wall, and reduce the spiral operation load.
In one embodiment, the high temperature drying section 420 has a U-shaped tube shape with an open top. The preheating section 410 and the discharging section 430 can both adopt closed circular tubes, and the high-temperature drying section 420 adopts a U-shaped tube with an open top, so that water vapor generated by drying in the high-temperature drying section 420 enters the secondary combustion chamber 200 through the opening, enters a subsequent flue gas treatment system of the rotary kiln-secondary combustion chamber hazardous waste incineration process along with combustion flue gas, and is subjected to processes such as desulfurization, denitration, deacidification, dust removal, water washing and the like together to reach the emission standard. Generally, the second combustion chamber 200 is in a negative pressure state in the working state, so that the water vapor generated by drying in the high temperature drying section 420 can enter the second combustion chamber 200 through the opening. In the invention, the high-temperature drying section 420 is designed into a U-shaped tubular shape, so that water vapor generated by drying enters the secondary combustion chamber 200 through the opening and enters a subsequent flue gas treatment system of the rotary kiln-secondary combustion chamber hazardous waste incineration process along with combustion flue gas for treatment and discharge, thus an additional discharge system is not required to be arranged for the drying equipment 400, the original discharge system is directly utilized, and the cost is saved. The material of the high temperature drying section 420 may be 310S to ensure the service life of the apparatus.
In an embodiment, as shown in fig. 2, a cooling jacket 431 is sleeved on the outer periphery of the discharging section 430, or a cooling interlayer is disposed on the outer wall of the discharging section 430, and a cooling medium, such as cooling water, is introduced into the cooling jacket 431 or the cooling interlayer. In the present invention, as shown in fig. 2, a cooling jacket 431 is provided around the discharge section 430 to cool the discharge section. The cooling jacket 431 is provided with a cooling liquid inlet 432 and a cooling liquid outlet 433, and the cooling liquid inlet 432 and the cooling liquid outlet 433 are used for introducing cooling liquid and discharging the cooling liquid respectively.
Further, as shown in fig. 1, 3 and 4, the hazardous waste slag on-line drying device further includes a conveying mechanism 600. The conveying mechanism 600 is used for conveying slag in the water quenching slag machine 300 to the drying device 400 so as to realize online drying.
In one embodiment, the conveying mechanism 600 is a second screw conveyor 610 and/or a chain conveyor 620. The conveying mechanism 600 may be only the second screw conveyor 610, or only the chain scraper 620, or both the second screw conveyor 610 and the chain scraper 620 may be used in combination. In the present invention, as shown in fig. 4, a second screw conveyor 610 and a trigger 620 are used in combination. Slag from the water quenching machine 300 is first conveyed to the second screw conveyor 610 by the chain plate machine 620, and then conveyed to the drying apparatus 400 by the second screw conveyor 610. Specifically, when the drying apparatus 400 employs the first screw conveyor, the second screw conveyor 610 conveys slag to the front end of the preheating section 410 of the first screw conveyor.
According to the invention, related equipment such as the drying equipment 400 (a first screw conveyer), the conveying mechanism 600 (a second screw conveyer 610 and a chain plate machine 620) and the like can be directly connected into a control system of the rotary kiln-second combustion chamber hazardous waste incineration line and run in an interlocking manner with the water quenching slag extractor 300, the whole drying device is automatically started and stopped, the labor cost is not increased, the intermediate slag does not fall to the ground, and online drying is realized.
The invention also discloses an online drying method for the hazardous waste slag. The method for drying the hazardous waste slag on line comprises the following steps:
and introducing the dangerous waste slag from the water quenching slag extractor 300 below the secondary combustion chamber 200 into the secondary combustion chamber 200, and drying the dangerous waste slag by using the high temperature of the secondary combustion chamber 200.
The method for drying the dangerous waste slag on line directly utilizes the high-temperature drying slag in the secondary combustion chamber 200, has the same beneficial effects as the dangerous waste slag on-line drying device, and is not repeated herein.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides an online drying device of danger waste slag which characterized in that includes:
a secondary combustion chamber (200) for burning chemical waste;
the water quenching slag extractor (300) is arranged below the second combustion chamber (200) and is used for receiving slag discharged from the second combustion chamber (200);
the drying equipment (400), at least part of the drying equipment (400) is arranged in the secondary combustion chamber (200) so as to dry the materials in the drying equipment (400) by using the heat in the secondary combustion chamber (200); and the drying equipment (400) is connected with the water quenching slag extractor (300) so that the water quenching slag extractor (300) sends slag into the drying equipment (400) for drying.
2. The hazardous waste slag online drying device according to claim 1, wherein the drying equipment (400) is a first screw conveyor.
3. The hazardous waste slag online drying device according to claim 2, wherein the first screw conveyor comprises a preheating section (410), a high-temperature drying section (420) and a discharging section (430) which are sequentially arranged, the preheating section (410) and the discharging section (430) are arranged outside the secondary combustion chamber (200), and the high-temperature drying section (420) is arranged inside the secondary combustion chamber (200).
4. The hazardous waste slag online drying device according to claim 3, wherein a heating coil (411) is arranged outside the preheating section (410).
5. The hazardous waste slag online drying device according to claim 3, wherein the high-temperature drying section (420) is in a U-shaped tubular shape, and the top of the high-temperature drying section is open.
6. The online drying device for the hazardous waste slag according to claim 3, wherein a cooling jacket (431) is sleeved on the periphery of the discharge section (430) or a cooling interlayer is arranged on the outer wall of the discharge section (430).
7. The hazardous waste slag on-line drying device of claim 1, further comprising:
a conveying mechanism (600), wherein the conveying mechanism (600) is used for conveying the slag in the water quenching slag machine (300) to the drying equipment (400).
8. The on-line drying device for hazardous waste slag according to claim 7, characterized in that the conveying mechanism (600) comprises a second screw conveyor (610) and/or a chain scraper conveyor (620).
9. The hazardous waste slag on-line drying device of claim 1, further comprising:
and the rotary kiln (100) is arranged on the second combustion chamber (200) and is communicated with the second combustion chamber (200).
10. The method for drying the hazardous waste slag on line is characterized by comprising the following steps:
introducing the dangerous waste slag from the water quenching slag extractor (300) below the secondary combustion chamber (200) into the secondary combustion chamber (200), and drying the dangerous waste slag by using the high temperature of the secondary combustion chamber (200).
CN202111037644.4A 2021-09-06 2021-09-06 Hazardous waste slag online drying device and drying method Pending CN113606592A (en)

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Application Number Priority Date Filing Date Title
CN202111037644.4A CN113606592A (en) 2021-09-06 2021-09-06 Hazardous waste slag online drying device and drying method

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Application Number Priority Date Filing Date Title
CN202111037644.4A CN113606592A (en) 2021-09-06 2021-09-06 Hazardous waste slag online drying device and drying method

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Publication Number Publication Date
CN113606592A true CN113606592A (en) 2021-11-05

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000328069A (en) * 1999-03-12 2000-11-28 Ube Ind Ltd Waste gasification method and equipment
WO2009015575A1 (en) * 2007-07-27 2009-02-05 Zefeng Chen Double-loop double-pyrogenation incinerator for garbage harmless treatment and its usage method
CN106958827A (en) * 2017-05-22 2017-07-18 洛阳昊海工贸有限公司 A kind of dangerous waste incinerator slag total system
CN111720834A (en) * 2020-06-09 2020-09-29 江苏神彩科技股份有限公司 Refractory material structure in hazardous waste incineration rotary kiln
CN112696685A (en) * 2020-12-27 2021-04-23 上海域德环保工程有限公司 Two combustion chamber constructional device of useless incineration of danger

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000328069A (en) * 1999-03-12 2000-11-28 Ube Ind Ltd Waste gasification method and equipment
WO2009015575A1 (en) * 2007-07-27 2009-02-05 Zefeng Chen Double-loop double-pyrogenation incinerator for garbage harmless treatment and its usage method
CN106958827A (en) * 2017-05-22 2017-07-18 洛阳昊海工贸有限公司 A kind of dangerous waste incinerator slag total system
CN111720834A (en) * 2020-06-09 2020-09-29 江苏神彩科技股份有限公司 Refractory material structure in hazardous waste incineration rotary kiln
CN112696685A (en) * 2020-12-27 2021-04-23 上海域德环保工程有限公司 Two combustion chamber constructional device of useless incineration of danger

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