CN114234201A - Dry-method slag discharging device for hazardous waste incineration - Google Patents
Dry-method slag discharging device for hazardous waste incineration Download PDFInfo
- Publication number
- CN114234201A CN114234201A CN202111415160.9A CN202111415160A CN114234201A CN 114234201 A CN114234201 A CN 114234201A CN 202111415160 A CN202111415160 A CN 202111415160A CN 114234201 A CN114234201 A CN 114234201A
- Authority
- CN
- China
- Prior art keywords
- cavity
- spiral
- disc
- slag
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002893 slag Substances 0.000 title claims abstract description 121
- 238000007599 discharging Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title abstract description 22
- 239000002920 hazardous waste Substances 0.000 title description 8
- 238000004056 waste incineration Methods 0.000 title description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 239000002918 waste heat Substances 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims abstract description 15
- 238000002485 combustion reaction Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 239000013049 sediment Substances 0.000 claims abstract description 3
- 239000000498 cooling water Substances 0.000 claims description 35
- 239000012528 membrane Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 238000010079 rubber tapping Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002309 gasification Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/04—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot slag, hot residues, or heated blocks, e.g. iron blocks
-
- 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
- F23G5/46—Recuperation of heat
-
- 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
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2202/00—Combustion
- F23G2202/10—Combustion in two or more stages
- F23G2202/103—Combustion in two or more stages in separate chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/20—Rotary drum furnace
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/20—Waste heat recuperation using the heat in association with another installation
- F23G2206/203—Waste heat recuperation using the heat in association with another installation with a power/heat generating installation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J2700/00—Ash removal, handling and treatment means; Ash and slag handling in pulverulent fuel furnaces; Ash removal means for incinerators
- F23J2700/003—Ash removal means for incinerators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
The application discloses sediment device is arranged to dry process for dangerous useless burning, the device includes: cooling the slag discharge tank and the waste heat recovery system; the cooling slag discharging tank comprises a cylinder body, an upper disc, a middle disc, a lower disc, a middle shaft, an upper cavity screw, a middle cavity screw, a lower cavity scraper and a feed opening; the upper cavity spiral and the middle cavity spiral are used for enabling the slag falling into the cylinder body to fall into the lower disc, and the lower cavity scraper is used for enabling the slag to be output from the discharging opening; the waste heat recovery system includes: the device comprises a water supply distributor, a low-temperature hot water distributor, a high-temperature hot water distributor and a steam pocket, wherein the water supply distributor and the low-temperature hot water distributor are used for recovering waste heat of slag in the barrel through water; and the high-temperature hot water distributor is used for converting high-temperature water into a steam-water mixture and outputting the steam in the steam-water mixture through a steam drum. The technical problems that in a rotary kiln incineration system in the prior art, slag cannot be discharged from the bottom of a secondary combustion chamber in a dry method and effective waste heat in furnace slag is effectively utilized are solved.
Description
Technical Field
The application relates to the technical field of hazardous waste incineration, and relates to a dry-method slag discharge device for hazardous waste incineration.
Background
At present, in the hazardous waste incineration technology, primary slag is mostly discharged by a wet method through a water-sealed slag conveyor, the slag discharging mode occupies a small area, the sealing of materials in a shell can be realized, dust is prevented from flying, and the defects that a large amount of waste water and unorganized waste gas are generated in the slag discharging process are overcome. And the dry-method slag tapping can avoid the defects in the wet-method slag tapping process, and can fully utilize the waste heat of ash residues to achieve the energy-saving effect.
In order to realize the dry-method slag discharging function, a dry-method slag discharging device needs to be designed, so that slag can be sufficiently kept in the device for cooling, the heat energy utilization efficiency is high enough, and the residual heat of the slag is sufficiently utilized. In the prior art, the following dry-method slag discharge devices are proposed: the patent CN208779462U provides a roller cooler, realizes the cooling of lime-ash, and it increases substantially heat transfer area through roller fin and water pipe fin, and the better lime-ash heat of passing to plays the guide effect to getting rid of lime-ash, has improved the ability of handling the system. The patent CN211373274U provides a two-stage slag cooler, which can realize dry slag removal, avoid acid corrosion of equipment and reduce water waste; meanwhile, two-section type cooling is realized, the heat energy recovery efficiency is high, and high-temperature steam generated by the cooler can be conveyed to downstream users for use. The patent CN206157108U proposes a dry-method slag discharge system, which comprises a rotary feeder, a high-pressure slag hopper, a variable-pressure slag hopper, a normal-pressure slag hopper, a cold slag tank, etc., wherein the slag discharge system is used for discharging slag from a gasification furnace; in the system, the gasification furnace and the rotary feeder are provided with the cold slag tank and the refrigeration unit, and the ash slag with high temperature and high pressure generated by the gasification furnace enters the cold slag tank firstly, so that the refrigeration unit is utilized to cool the ash slag in the cold slag tank, and the cooled ash slag enters the rotary feeder again, thereby avoiding the abrasion of the rotary feeder. The patent CN212246917U provides a dry-method slag removal system, mainly includes the cooling slag fill, and the cooling slag fill is used for receiving the discharged lime-ash of pressurized fluidized bed gasifier to cool off the lime-ash, the complete sets of system can realize the rapid cooling decompression of the inside lime-ash of fluidized bed gasifier, according to the hierarchical discharge system in succession of lime-ash type, has realized the separation of thickness lime-ash.
Disclosure of Invention
The technical problem that this application was solved is: in the existing rotary kiln incineration system, the bottom of the secondary combustion chamber cannot be subjected to dry-method slag discharge and effectively utilize the effective waste heat in the slag. The application provides a dry process row's sediment device for dangerous useless incineration, in the scheme that the embodiment of this application provided, the water of cooling slag is at the jackshaft, go up the hollow structure of cavity spiral, flow in the membrane wall of the hollow structure of cavity spiral and barrel in, and export the vapor after will heating from the steam pocket, in the whole cooling process, the water of slag and cooling slag can not direct contact, but carry out heat exchange through waste heat recovery system output cooling water and slag and generate and remove steam, avoid the output of waste gas and waste water. In the rotary kiln incineration system, the heat of the slag is rapidly released in a mechanical conveying and mechanical stirring mode, the waste heat of the slag is effectively utilized by arranging a reasonable heat exchange surface and a reasonable steam-water distribution mode, the discharge of unorganized waste gas and waste water caused by wet-process slag discharge is avoided, and the effects of energy conservation and emission reduction are achieved.
In a first aspect, the embodiment of the present application provides a dry-process slag discharging device for hazardous waste incineration, sets up in second combustion chamber bottom, and the device includes: the device comprises a cooling slag discharging tank and a waste heat recovery system, wherein the cooling slag discharging tank comprises a cylinder, an upper disc, a middle disc, a lower disc, a middle shaft, an upper cavity spiral, a middle cavity spiral, a lower cavity scraper and a feed opening; the upper disc, the middle disc and the lower disc are arranged in the cylinder body, are parallel to the cross section of the cylinder body and are used for dividing the cylinder body into an upper cavity, a middle cavity and a lower cavity; the middle shaft penetrates through the upper disc and the middle disc along the central axis of the cylinder body; the upper cavity body screw is used for enabling slag falling into the upper cavity body to fall into the middle cavity body, the middle cavity body screw is used for enabling the slag falling into the middle cavity body to fall into the lower cavity body, and the lower cavity body scraper and the feed opening are both arranged on the lower disc and are used for enabling the slag falling into the lower cavity body to be output from the feed opening; the membrane wall of the cylinder, the upper cavity spiral and the middle cavity spiral are hollow structures;
the waste heat recovery system comprises: the water supply distributor is used for inputting cooling water into the intermediate shaft and the middle cavity spiral through a water pipe; the low-temperature hot water distributor is used for inputting low-temperature water output from the middle shaft and the middle cavity spiral into the upper cavity spiral; the high-temperature hot water distributor is used for inputting high-temperature water spirally output from the upper cavity into the membrane wall of the cylinder and converting the high-temperature water into a steam-water mixture, wherein steam in the steam-water mixture enters the steam drum to be output, and water in the steam-water mixture returns to the high-temperature hot water distributor through a water pipeline to form circulation, so that slag falling into the cylinder is cooled.
Optionally, the upper body helix comprises a first upper body helix and a second upper body helix oppositely disposed along the intermediate shaft; the middle cavity helix includes a first middle cavity helix and a second middle cavity helix oppositely disposed along the middle axis.
Optionally, the first upper cavity spiral, the second upper cavity spiral, the first middle cavity spiral, and the second middle cavity spiral each include: the rotary joint is used for providing end sealing of a cooling water circulation loop from an inlet to an outlet, and the spiral body is used for controlling slag falling into the upper cavity or the middle cavity to move on the upper disc or the middle disc; the cooling water inlet is used for inputting cooling water into the hollow structure, and the cooling water outlet is used for outputting water in the hollow structure.
Optionally, the spiral body comprises a first section of rotating body and a second section of rotating body, wherein the first section of rotating body and the second section of rotating body use the central axis of the spiral body as a boundary line, and the rotating directions are opposite.
Optionally, at least one opening is arranged in the central position of the upper disc; the spiral body in the upper cavity spiral is used for controlling slag falling into the upper cavity to move from outside to inside along the upper disc and fall into the middle cavity from the at least one opening.
Optionally, a gap is arranged between the middle disc and the inner wall of the cylinder body; the spiral body in the middle cavity body spiral is used for controlling slag falling into the middle cavity body to move from inside to outside along the middle disc and fall into the lower cavity body from the gap.
Optionally, the outer diameter of the spiral body in the upper cavity spiral and the middle cavity spiral is not less than 320 mm.
Optionally, the intermediate shaft has a double-layer structure including an inner layer and an outer layer, and the cooling water flows in from the inner layer and flows out from the outer layer, or the cooling water flows in from the outer layer and flows out from the inner layer.
Optionally, the upper disc and the middle disc are fixed on the middle shaft, and the tensile strength of the middle shaft is not less than 167 MPa.
Optionally, the length of the lower chamber scraper should be no less than the diameter of the lower disk and less than the inner diameter of the cylinder.
Optionally, a gap exists between the lower cavity scraper and the lower disc, and the value range of the gap is (1mm,3 mm).
Compared with the prior art, the scheme provided by the embodiment of the application has at least the following beneficial effects:
in the scheme provided by the embodiment of the application, cooling water is input into the hollow structures of the middle shaft and the middle cavity body spiral through the water supply distributor so as to absorb the heat of the slag falling into the middle cavity body, so that the temperature of the slag is reduced, and low-temperature hot water is obtained; and inputting the low-temperature hot water into the spiral hollow structure of the upper cavity through the low-temperature hot water distributor to absorb the heat of the slag falling into the upper cavity, so that the temperature of the slag is reduced, the high-temperature hot water is obtained, the cooling of the slag is further realized, and the slag is output through the feed opening after being cooled. Further, high-temperature hot water is uniformly distributed into the membrane wall of the inner wall of the cylinder body through a high-temperature hot water distributor, the high-temperature hot water is converted into a steam-water mixture in the membrane wall, and steam in the steam-water mixture is output through a steam pocket. In the dry-method slag removal device, water for cooling slag flows in the middle shaft, the hollow structure of the upper cavity spiral, the hollow structure of the middle cavity spiral and the membrane wall of the cylinder, and heated water vapor is output from the steam drum.
Drawings
FIG. 1 is a schematic structural diagram of a dry slagging device for hazardous waste incineration according to an embodiment of the present application;
FIG. 2 is a schematic view illustrating a flow direction of slag in a cooling slag tapping pot according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an upper cavity spiral or a middle cavity spiral according to an embodiment of the present disclosure;
fig. 4 is a schematic three-dimensional structure diagram of an upper cavity spiral or a middle cavity spiral according to an embodiment of the present disclosure.
Reference numerals: 1-cooling and deslagging a tank; 2-a waste heat recovery system; 11-a barrel body; 12-an upper disc; 13-middle disc; 14-lower disc; 15-intermediate shaft; 16-upper cavity helix; 17-lumen helix; 18-lower cavity scraper; 19-a feed opening; 21-a feed water distributor; 22-low temperature hot water dispenser; 23-a high temperature hot water dispenser; 24-steam drum; 161-a first upper cavity helix; 162-a second upper cavity spiral; 171-a first middle cavity helix; 172-a second middle cavity helix; 101-a rotary joint; 102-a cooling water inlet; 103-cooling water outlet; 104-a spiral body; 1041-a first segment of revolution; 1042-second segment of revolution.
Detailed Description
In the solutions provided in the embodiments of the present application, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to better understand the technical solutions, the technical solutions of the present application are described in detail below with reference to the drawings and specific embodiments, and it should be understood that the specific features in the embodiments and examples of the present application are detailed descriptions of the technical solutions of the present application, and are not limitations of the technical solutions of the present application, and the technical features in the embodiments and examples of the present application may be combined with each other without conflict.
Referring to fig. 1, a schematic structural diagram of a dry-method slag discharge device for hazardous waste incineration according to an embodiment of the present application is provided. In fig. 1, the apparatus comprises: the waste heat recovery system comprises a cooling slag discharging tank 1 and a waste heat recovery system 2, wherein the cooling slag discharging tank 1 comprises a cylinder body 11, an upper circular disc 12, a middle circular disc 13, a lower circular disc 14, an intermediate shaft 15, an upper cavity spiral 16, a middle cavity spiral 17, a lower cavity scraper 18 and a feed opening 19; the upper disc 12, the middle disc 13 and the lower disc 14 are arranged inside the cylinder 11, are parallel to the cross section of the cylinder 11, and are used for dividing the cylinder 11 into an upper cavity, a middle cavity and a lower cavity; the middle shaft 15 penetrates through the upper circular disc 12 and the middle circular disc 13 along the central axis of the cylinder 11; the upper cavity screw 16 is used for enabling slag falling into the upper cavity to fall into the middle cavity, the middle cavity screw 17 is used for enabling slag falling into the middle cavity to fall into the lower cavity, and both the lower cavity scraper 18 and the feed opening 19 are arranged on the lower disc 14 and are used for enabling slag falling into the lower cavity to be output from the feed opening 19; wherein, the membrane wall of the cylinder 11, the upper cavity spiral 16 and the middle cavity spiral 17 are hollow structures;
the waste heat recovery system 2 includes: a feed water distributor 21, a low-temperature hot water distributor 22, a high-temperature hot water distributor 23, and a steam drum 24, wherein the feed water distributor 21 is configured to input cooling water into the intermediate shaft 15 and the middle cavity spiral 17 through a water pipe; the low-temperature hot water distributor 22 is used for inputting low-temperature water output from the intermediate shaft 15 and the middle cavity spiral 17 into the upper cavity spiral 16; the high-temperature hot water distributor 23 is configured to input high-temperature water output from the upper cavity spiral 16 into a membrane wall of the cylinder 11, and convert the high-temperature water into a steam-water mixture, wherein steam in the steam-water mixture enters the steam drum 24 to be output, and water in the steam-water mixture returns to the high-temperature hot water distributor 23 through a water pipeline to form a circulation, so that slag falling into the cylinder 11 is cooled.
Specifically, in the solution provided in the embodiment of the present application, the cooling slag discharging tank 1 is composed of a cylinder 11, an upper circular disc 12, a middle circular disc 13, a lower circular disc 14, an intermediate shaft 15, an upper cavity screw 16, a middle cavity screw 17, a lower cavity scraper 18, a feed opening 19, and the like. The cylinder 11 is divided into three cavities, namely an upper cavity, a middle cavity and a lower cavity, by an upper disc 12, a middle disc 13 and a lower disc 14. Further, a through hole is opened at the center of the upper disc 12 and the middle disc 13, the middle disc 15 penetrates the upper disc 12 and the middle disc 13 through the through hole, and the upper disc 12 and the middle disc 13 can rotate along the middle disc 15. Specifically, refer to fig. 1, which is a schematic structural diagram of the cooling slag discharging tank 1 indicated by a dashed box arrow.
For ease of understanding, the movement of the slag in the cooling slag discharge ladle 1 will be briefly described below.
Firstly, slag falls into an upper cavity in the barrel body 11 from the rotary kiln, moves on the upper disc 12 under the action of an upper cavity screw 16 and falls into a middle cavity; then, the slag moves on the middle disc 13 in the middle cavity under the action of the middle cavity screw 17 and falls into the lower cavity; then, the slag is output from the feed opening 19 in the lower cavity under the action of the lower cavity scraper 18. By way of example, the dry slag extraction device also comprises a discharge screw which conveys the cooled slag output by the discharge opening 19 into an ash transporter.
In the scheme provided by the embodiment of the application, because the slag carries a large amount of heat when being discharged from the rotary kiln, in order to recover the heat of the slag, the slag needs to be recovered by the heat in the movement process of the slag in the cooling slag discharging tank 1. By way of example, the embodiment of the present application provides a waste heat recovery system 2 to recover heat of slag, and the principle thereof is as follows:
specifically, in the solution provided in the embodiment of the present application, the cylinder wall of the cylinder 11 is a membrane wall, and the interiors of the upper cavity spiral 16 and the middle cavity spiral 17 are both hollow structures. The waste heat recovery system 2 is composed of a feed water distributor 21, a low-temperature hot water distributor 22, a high-temperature hot water distributor 23, a steam drum 24 and the like. Cooling water from the outside uniformly enters the hollow structure of the intermediate shaft 15 and the middle cavity spiral 17 through the water supply distributor 21, and the cooling water is converted into low-temperature hot water after being preheated for the first stage and enters the low-temperature hot water distributor 22; the low-temperature hot water distributor 22 uniformly distributes the low-temperature hot water into the hollow structure of the upper cavity spiral 16, and the low-temperature hot water is changed into high-temperature hot water after being preheated for the second stage and enters the high-temperature hot water distributor 23; the high-temperature hot water distributor 23 uniformly distributes the high-temperature hot water into the membrane wall of the inner wall of the cylinder 11, the high-temperature hot water is converted into a steam-water mixture in the membrane wall, and then the steam-water mixture enters the steam drum 24; the steam in the steam drum 24 is sent to the end user through a steam pipeline or is merged into a steam pipe network, and the water returns to the high-temperature hot water distributor 23 through a water pipe to form a circulation. For example, the water supply distributor 21 is connected to the intermediate shaft 15 and the intermediate chamber screw 17 through a water pipe, the low temperature hot water distributor 22 is connected to the upper chamber screw 16 through a water pipe, and the high temperature hot water distributor 23 is connected to the membrane wall of the inner wall of the cylinder 11 through a water pipe. Therefore, in the solution provided by the embodiment of the present application, cooling water is input into the hollow structure of the intermediate shaft 15 and the middle cavity spiral 17 through the water supply distributor 21 to absorb heat of the slag falling into the middle cavity, so that the temperature of the slag is reduced and low-temperature hot water is obtained; further, low-temperature hot water is input into the hollow structure of the upper cavity spiral 16 through the low-temperature hot water distributor 22 to absorb heat of slag falling into the upper cavity, so that the temperature of the slag is reduced and high-temperature hot water is obtained, thereby cooling the slag, and the slag is output through the feed opening 19 after being cooled. Referring to fig. 2, a schematic flow diagram of slag in a cooling slag tapping pot according to an embodiment of the present application is shown.
Further, in the solution provided in the embodiment of the present application, the high-temperature hot water distributor 23 uniformly distributes the high-temperature hot water into the membrane wall of the inner wall of the cylinder 11, and the high-temperature hot water is converted into a steam-water mixture in the membrane wall and then enters the steam drum 24; the steam in the steam drum 24 is sent to the end user through a steam pipeline or is merged into a steam pipe network, and the water returns to the high-temperature hot water distributor 23 through a water pipe to form a circulation. That is, in the dry slagging device, water for cooling slag flows in the intermediate shaft 15, the hollow structure of the upper cavity screw 16, the hollow structure of the intermediate cavity screw 17 and the membrane wall of the cylinder 11, and heated water vapor is output from the steam drum 24, and in the whole cooling process, the slag and the water for cooling the slag do not directly contact with each other, but the cooling water output by the waste heat recovery system 2 exchanges heat with the slag to generate and remove the steam, thereby avoiding the generation of waste gas and waste water. As an example, the dry-method slag discharge device is arranged at the bottom of the second combustion chamber.
In a possible implementation, the upper cavity screw 16 comprises a first upper cavity screw 161 and a second upper cavity screw 162 oppositely disposed along the intermediate shaft 15; the middle cavity screw 17 includes a first middle cavity screw 171 and a second middle cavity screw 172 disposed opposite each other along the middle shaft 15.
In the solution provided by the present embodiment, two pairs of spirals are arranged next to the disc in the upper and middle chambers, wherein the upper chamber spiral 16 comprises a first upper chamber spiral 161 and a second upper chamber spiral 162 arranged opposite along the middle axis 15 and the middle chamber spiral 17 comprises a first middle chamber spiral 171 and a second middle chamber spiral 172 arranged opposite along the middle axis 15. In the upper cavity, the first upper cavity screw 161 and the second upper cavity screw 162 are disposed on both sides of the intermediate shaft 15; in the middle chamber, the first middle chamber spiral 171 and the second middle chamber spiral 172 are also disposed on both sides of the middle shaft 15, and the distance between the first middle chamber spiral 161 and the second middle chamber spiral 162 and the middle shaft 15 is smaller than the distance between the first middle chamber spiral 171 and the second middle chamber spiral 172 and the middle shaft 15.
Referring to fig. 3 and 4, in one possible implementation, the first upper cavity screw 161, the second upper cavity screw 162, the first middle cavity screw 171, and the second middle cavity screw 172 each include: a rotary joint 101, a cooling water inlet 102, a cooling water outlet 103 and a spiral body 104, wherein the rotary joint 101 is used for providing end sealing of a cooling water circulation loop from an inlet to an outlet, and the spiral body 104 is used for controlling slag falling into the upper cavity or the middle cavity to move on the upper disc 12 or the middle disc 13; the cooling water inlet 102 is used for inputting cooling water into the hollow structure, and the cooling water outlet 103 is used for outputting water in the hollow structure.
In a possible implementation manner, the spiral body 104 includes a first section of rotating body 1041 and a second section of rotating body 1042, wherein the first section of rotating body 1041 and the second section of rotating body 1042 have a central axis of the spiral body 104 as a boundary line and have opposite rotation directions.
In the solution provided in the embodiment of the present application, water is input into the hollow structure of the upper cavity spiral 16 or the middle cavity spiral 17 through the cooling water inlet 102, and the water flows through the hollow structure of the upper cavity spiral 16 or the middle cavity spiral 17 and flows out through the cooling water outlet 103. In addition, the upper cavity screw 16 and the middle cavity screw 17 can be rotated by the rotary joint 101 controller, so that the slag falling into the upper cavity or the middle cavity moves on the upper disc 12 or the middle disc 13. Further, the upper cavity spiral 16 and the middle cavity spiral 17 respectively comprise two sections of spiral bodies, the two sections of spiral bodies take the central axis as a boundary line, and the spiral directions of the two sections of spiral bodies are opposite.
In a possible way of realisation, the upper disc 12 is provided, centrally, with at least one opening; the spiral 104 in the upper cavity spiral 16 is used to control the slag falling into the upper cavity to move from the outside to the inside along the upper disc 12 and fall into the middle cavity from the at least one opening.
Specifically, in the solution provided in the embodiment of the present application, at least one opening may be a circular opening, or may be an opening of another shape, because the upper cavity spiral 16 is formed by combining two spirals with opposite turning directions, the upper cavity spiral 16 may be driven by a motor (not labeled in the figure) to operate (e.g., rotate), and during operation, slag in the upper cavity may move from the outer ring to the inner ring, so that the slag falls into the middle cavity from the at least one opening.
In a possible way of realization, a gap is provided between the middle disc 13 and the inner wall of the cylinder 11; the spiral body 104 in the middle cavity spiral 17 is used for controlling the slag falling into the middle cavity to move from inside to outside along the middle disc 13 and fall into the lower cavity from the gap.
Specifically, in the solution provided in the embodiment of the present application, the diameter of the middle disk 13 is smaller than the cross-sectional diameter of the cylinder 11, and by way of example, the diameters of the upper disk 12 and the lower disk 14 are larger than the diameter of the middle disk 13 and smaller or slightly smaller than the cross-sectional diameter of the cylinder 11. Therefore, a gap exists between the middle disc 13 and the inner wall of the cylinder 11, and because the middle cavity spiral 17 is formed by combining two sections of spirals with opposite rotation directions, the middle cavity spiral 17 can be driven by a motor (not marked in the figure) to operate (for example, rotate), and during operation, slag in the middle cavity can move from the inner ring to the outer ring, so that the slag falls into the lower cavity from the gap between the middle disc 13 and the inner wall of the cylinder 11. The bottom of the lower cavity is provided with a lower cavity scraper 18 rotating along with the intermediate shaft 15, and the lower cavity scraper 18 can scrape slag falling from the middle cavity to the feed opening of the lower disc 14. The inner wall of the cylinder 11 is a membrane wall.
Further, in a possible implementation, the outer diameter of the spiral body 104 in the upper cavity spiral 16 and the middle cavity spiral 17 is not less than 320 mm.
Further, in a possible implementation manner, the intermediate shaft 15 has a double-layer structure including an inner layer and an outer layer, and the cooling water flows in from the inner layer and flows out from the outer layer, or the cooling water flows in from the outer layer and flows out from the inner layer.
Further, in a possible implementation manner, the upper disc 12 and the middle disc 13 are fixed on the middle shaft 15, and the tensile strength of the material of the middle shaft 15 is not less than 167 MPa.
As an example, the material of the intermediate shaft 15 should have a tensile strength (167MPa) of not less than 800 ℃ of the heat-resistant cast iron RQTAL5Si 5.
Further, in a possible implementation, the length of the lower chamber scraper 18 should be no less than the diameter of the lower disc 14 and less than the inner diameter of the cylinder 11. By way of example, the length of the lower chamber scraper 18 takes on a value between the diameter of the lower disc 14 and the inner diameter of the barrel 11.
Further, in a possible implementation manner, a gap exists between the lower cavity scraper 18 and the lower disk 14, and the value range of the gap is (1mm,3 mm).
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (11)
1. The utility model provides a sediment device is arranged in second combustion chamber bottom to dry process for dangerous useless burning, its characterized in that includes: a cooling slag discharge tank (1) and a waste heat recovery system (2), wherein,
the cooling slag discharging tank (1) comprises a cylinder body (11), an upper disc (12), a middle disc (13), a lower disc (14), a middle shaft (15), an upper cavity spiral (16), a middle cavity spiral (17), a lower cavity scraper (18) and a feed opening (19); the upper disc (12), the middle disc (13) and the lower disc (14) are arranged inside the cylinder (11) and are parallel to the cross section of the cylinder (11) and used for dividing the cylinder (11) into an upper cavity, a middle cavity and a lower cavity; the middle shaft (15) penetrates through the upper disc (12) and the middle disc (13) along the central axis of the cylinder body (11); the upper cavity screw (16) is used for enabling slag falling into the upper cavity to fall into the middle cavity, the middle cavity screw (17) is used for enabling slag falling into the middle cavity to fall into the lower cavity, and both the lower cavity scraper (18) and the feed opening (19) are arranged on the lower disc (14) and are used for enabling the slag falling into the lower cavity to be output from the feed opening (19); wherein the membrane wall of the cylinder (11), the upper cavity spiral (16) and the middle cavity spiral (17) are hollow structures;
the waste heat recovery system (2) comprises: a feed water distributor (21), a low-temperature hot water distributor (22), a high-temperature hot water distributor (23) and a steam drum (24), wherein the feed water distributor (21) is used for inputting cooling water into the intermediate shaft (15) and the middle cavity spiral (17) through water pipes; the low-temperature hot water distributor (22) is used for inputting low-temperature water output from the intermediate shaft (15) and the intermediate cavity spiral (17) into the upper cavity spiral (16); the high-temperature hot water distributor (23) is used for inputting high-temperature water output from the upper cavity spiral (16) into a membrane wall of the cylinder (11) and converting the high-temperature water into a steam-water mixture, wherein steam in the steam-water mixture enters a steam drum (24) to be output, and water in the steam-water mixture returns to the high-temperature hot water distributor (23) through a water pipeline to form circulation, so that slag falling into the cylinder (11) is cooled.
2. The device according to claim 1, characterized in that said upper cavity screw (16) comprises a first upper cavity screw (161) and a second upper cavity screw (162) oppositely disposed along said intermediate shaft (15);
the central lumen helix (17) comprises a first central lumen helix (171) and a second central lumen helix (172) disposed opposite along the intermediate shaft (15).
3. The apparatus of claim 2, wherein the first upper cavity screw (161), the second upper cavity screw (162), the first middle cavity screw (171), and the second middle cavity screw (172) each comprise: a rotary joint (101), a cooling water inlet (102), a cooling water outlet (103) and a spiral body (104), wherein the rotary joint (101) is used for providing end sealing of a cooling water circulation loop from an inlet to an outlet, and the spiral body (104) is used for controlling the movement of slag in the upper cavity or the middle cavity on the upper disc (12) or the middle disc (13); the cooling water inlet (102) is used for inputting cooling water into the hollow structure, and the cooling water outlet (103) is used for outputting water in the hollow structure.
4. The device according to claim 3, characterized in that the spiral body (104) comprises a first section of rotating body (1041) and a second section of rotating body (1042), wherein the first section of rotating body (1041) and the second section of rotating body (1042) are separated by a central axis of the spiral body (104) and have opposite rotation directions.
5. The device according to claim 4, characterized in that said upper disc (12) is provided, centrally, with at least one opening;
a spiral body (104) in the upper cavity spiral (16) is used for controlling slag falling into the upper cavity to move from outside to inside along the upper disc (12) and fall into the middle cavity from the at least one opening.
6. The device according to claim 4, characterized in that a gap is provided between the central disc (13) and the inner wall of the cylinder (11);
a spiral body (104) in the spiral (17) of the middle cavity body is used for controlling the slag falling into the middle cavity body to move from inside to outside along the middle disc (13) and fall into the lower cavity body from the gap.
7. The device according to any of the claims 2 to 6, characterized in that the outer diameter of the spiral body (104) in the upper cavity spiral (16) and the middle cavity spiral (17) is not less than 320 mm.
8. The device according to any one of claims 2 to 6, wherein the intermediate shaft (15) has a double-layer structure including an inner layer and an outer layer, and the cooling water flows in from the inner layer and flows out from the outer layer, or the cooling water flows in from the outer layer and flows out from the inner layer.
9. The device according to claim 8, characterized in that said upper disc (12) and said middle disc (13) are fixed to said intermediate shaft (15), said intermediate shaft (15) being made of a material having a tensile strength not less than 167 MPa.
10. The device according to claim 9, characterized in that the length of the lower chamber scraper (18) should be no less than the diameter of the lower disc (14) and less than the inner diameter of the cylinder (11).
11. The apparatus of claim 10, wherein a gap exists between the lower chamber scraper (18) and the lower disk (14), the gap having a value in the range of (1mm,3 mm).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111415160.9A CN114234201B (en) | 2021-11-25 | 2021-11-25 | Dry slag discharging device for dangerous waste incineration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111415160.9A CN114234201B (en) | 2021-11-25 | 2021-11-25 | Dry slag discharging device for dangerous waste incineration |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114234201A true CN114234201A (en) | 2022-03-25 |
| CN114234201B CN114234201B (en) | 2024-02-09 |
Family
ID=80751371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111415160.9A Active CN114234201B (en) | 2021-11-25 | 2021-11-25 | Dry slag discharging device for dangerous waste incineration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114234201B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050066864A1 (en) * | 2003-09-26 | 2005-03-31 | Norihisa Miyoshi | Incombustible withdrawing system |
| CN202109504U (en) * | 2011-06-09 | 2012-01-11 | 成都天牛能源技术有限公司 | Drum type inner scraper slag cooler |
| CN202118929U (en) * | 2011-06-10 | 2012-01-18 | 上海帆旺电力设备制造有限公司 | Multilayer disc type series-connection slag cooler |
| JP2012057228A (en) * | 2010-09-10 | 2012-03-22 | Nippon Steel Corp | Method for treating high temperature slag |
| CN203605246U (en) * | 2013-11-11 | 2014-05-21 | 安徽科达洁能股份有限公司 | Helical slag extractor |
| CN107803045A (en) * | 2017-11-09 | 2018-03-16 | 四川理工学院 | Reciprocal turn over scrapes formula heating negative pressure separator |
| CN108411054A (en) * | 2018-02-26 | 2018-08-17 | 西安交通大学 | A kind of mobile bed apparatus for recycling high temperature bulk material sensible heat |
| CN109612286A (en) * | 2018-12-10 | 2019-04-12 | 东北大学 | A kind of vanadium slag waste heat recycling system and its application method |
| CN112066350A (en) * | 2020-09-14 | 2020-12-11 | 山东迪尔节能科技有限公司 | High-temperature slag waste heat recovery system |
| CN212841549U (en) * | 2020-06-19 | 2021-03-30 | 德阳劲达节能科技有限责任公司 | Tower-shaped membrane type slag cooler |
-
2021
- 2021-11-25 CN CN202111415160.9A patent/CN114234201B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050066864A1 (en) * | 2003-09-26 | 2005-03-31 | Norihisa Miyoshi | Incombustible withdrawing system |
| JP2012057228A (en) * | 2010-09-10 | 2012-03-22 | Nippon Steel Corp | Method for treating high temperature slag |
| CN202109504U (en) * | 2011-06-09 | 2012-01-11 | 成都天牛能源技术有限公司 | Drum type inner scraper slag cooler |
| CN202118929U (en) * | 2011-06-10 | 2012-01-18 | 上海帆旺电力设备制造有限公司 | Multilayer disc type series-connection slag cooler |
| CN203605246U (en) * | 2013-11-11 | 2014-05-21 | 安徽科达洁能股份有限公司 | Helical slag extractor |
| CN107803045A (en) * | 2017-11-09 | 2018-03-16 | 四川理工学院 | Reciprocal turn over scrapes formula heating negative pressure separator |
| CN108411054A (en) * | 2018-02-26 | 2018-08-17 | 西安交通大学 | A kind of mobile bed apparatus for recycling high temperature bulk material sensible heat |
| CN109612286A (en) * | 2018-12-10 | 2019-04-12 | 东北大学 | A kind of vanadium slag waste heat recycling system and its application method |
| CN212841549U (en) * | 2020-06-19 | 2021-03-30 | 德阳劲达节能科技有限责任公司 | Tower-shaped membrane type slag cooler |
| CN112066350A (en) * | 2020-09-14 | 2020-12-11 | 山东迪尔节能科技有限公司 | High-temperature slag waste heat recovery system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114234201B (en) | 2024-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105567897B (en) | Iron making method and kiln | |
| WO2008138166A1 (en) | A coal circulating fluidized bed coal gas generating furnace system | |
| CN206385084U (en) | A kind of continous way charging and solid and gas are automatically separated the carbonizing plant of reduction and gaseous charcoal processed | |
| CN106221814B (en) | A kind of colm water cooling fireplace segmented couples gasification installation and gasification process | |
| CN109319784B (en) | Molten calcium carbide one-step cooling granulation molding system and waste heat recovery method | |
| CN101850222B (en) | Mechanical granulation and heat recovery device of liquid slag | |
| CN104215078B (en) | The molten production technology and equipments that sticks together of a kind of magnesium with waste-heat recovery device | |
| CN105499484A (en) | Energy-saving coil pipe cooling type quick roasting and regenerating system for foundry sand | |
| CN104560207A (en) | Gasification device of coal derived industrial gas | |
| CN114234201A (en) | Dry-method slag discharging device for hazardous waste incineration | |
| CN101307372B (en) | Device for manufacturing and reducing crust pellet and production process | |
| CN101963461A (en) | Pyrite cinder heat recovery method | |
| CN111519029A (en) | Flash circulating smelting system built by high-temperature heat exchanger | |
| CN103614497A (en) | Dry method processing and waste heat utilizing system for hot molten slag and method of dry method processing and waste heat utilizing system | |
| CN111206131A (en) | High-temperature molten slag granulating device | |
| CN207811669U (en) | A kind of efficient waste heat recycling pyrolysis reactor | |
| CN203653587U (en) | System for processing hot melt slag and utilizing waste heat by dry process | |
| CN213113227U (en) | Slag discharge system of fluidized bed gasification furnace | |
| CN205653407U (en) | Coal pyrolysis system | |
| CN109780539B (en) | Circulating fluidized bed boiler bottom slag waste heat recovery device | |
| CN204356293U (en) | The gasifying process system of a kind of fine particle biomass or solid fossil fuel | |
| CN106119536A (en) | A kind of manganese oxide powder cooling device | |
| CN209602470U (en) | Circulating Fluidized Bed Gasifier For Biomass material returning device carbonizing device | |
| CN106753469A (en) | A kind of continous way charging and solid and gas are automatically separated the carbonizing plant of reduction and gaseous charcoal processed | |
| CN208701107U (en) | A kind of dust-extraction unit and gas high-temperature dust removal system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |