CN113414211A - Continuous dissolving system of domestic waste incineration fly ash - Google Patents
Continuous dissolving system of domestic waste incineration fly ash Download PDFInfo
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- CN113414211A CN113414211A CN202011643440.0A CN202011643440A CN113414211A CN 113414211 A CN113414211 A CN 113414211A CN 202011643440 A CN202011643440 A CN 202011643440A CN 113414211 A CN113414211 A CN 113414211A
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- fly ash
- fixedly connected
- pipeline
- cavity
- dissolving tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/006—Baffles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Abstract
The invention provides a continuous dissolving system for fly ash generated by burning household garbage, and relates to the technical field of hazardous waste treatment. This continuous dissolving system of domestic waste incineration fly ash, including the filtrate groove, the output of first screw pump passes through pipeline fixed connection at the input of ejector, and another input of ejector passes through pipeline fixed connection simultaneously and stores up the storehouse bottom, the output of ejector passes through pipeline fixed connection at dissolving tank top front end. The filter liquor in the filter liquor tank is conveyed to the ejector through the first screw pump, the fly ash in the storage bin is sucked down through the ejector, and is pre-mixed in the ejector and then enters the dissolving tank for plasticizing, alcoholizing and curing, so that the dissolution of the fly ash can be accelerated, the fly ash dissolution time is greatly shortened, continuous feeding and discharging can be realized, the dissolution process can be continuously carried out, the process flow is simpler, the dissolution efficiency is greatly improved, and the method is worthy of vigorous popularization.
Description
Technical Field
The invention relates to the technical field of hazardous waste treatment, in particular to a continuous dissolving system for household garbage incineration fly ash.
Background
At present, domestic garbage is collected and incinerated in a mixed mode, a large amount of fly ash is generated in the incineration process, the fly ash belongs to dangerous waste due to the fact that the fly ash contains high-concentration chlorine elements, a large amount of heavy metal elements and dioxin substances, the fly ash is called as staggered resources due to the fact that the chemical composition of the fly ash is similar to that of building materials, and the utilization of fly ash resources is divided into four major categories, namely nine ways: the fly ash is treated through water washing after dioxin is removed from the collected fly ash, chlorine salt and heavy metal are washed out, ash is dried and then burned into cement or used as building material, and the water washing liquid is treated, concentrated, evaporated, crystallized and separated from industrial salt.
In the existing fly ash washing production line, the fly ash dissolving system mainly comprises a fly ash storage bin, a rotary feeder, a screw conveyor, a water weighing tank and a stirring tank, firstly, water in the water weighing tank is conveyed into the stirring tank through a pipeline, then the fly ash enters the screw conveyor through the rotary feeder and is conveyed into the stirring tank through the screw conveyor, and is mixed with the water and stirred, and the water is conveyed to a solid-liquid separation unit for separation after being completely dissolved, but the fly ash and the water are mixed in the tank and are mechanically stirred, so that a longer dissolving time is needed, and the intermittent production mode cannot continuously feed and discharge the materials, has extremely low efficiency, generally sets multiple groups of stirring tanks for ensuring continuous discharge, and can cause investment increase and tedious control, and the ash feeding and stirring processes of the dissolving system can generate dust raising in different degrees.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a continuous dissolving system for fly ash generated by burning household garbage, which solves the problems of long time, low efficiency, complex flow and easy dust emission of the conventional fly ash dissolving system.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a domestic waste burns flying ash and dissolves system in succession, includes the filtrate groove, the filtrate groove passes through pipeline fixed connection at the input of first screw pump, the output of first screw pump passes through pipeline fixed connection at the input of ejector, and another input of ejector passes through pipeline fixed connection simultaneously and stores the storehouse bottom, the output of ejector passes through pipeline fixed connection at dissolving tank top front end, dissolving tank rear end bottom passes through pipeline fixed connection at the input of third screw pump, the output of third screw pump passes through pipeline fixed connection at horizontal screw sedimentation centrifuge's input.
Preferably, a dust flow meter and a one-way valve are arranged on a pipeline between the ejector and the storage bin.
Preferably, store storehouse top one side fixedly connected with throw the material funnel and throw material funnel opening part threaded connection and have sealed lid, store storehouse top opposite side fixedly connected with radar charge level indicator, one side fixedly connected with observation window of storing the storehouse, the opposite side outer wall fixedly connected with vibrating motor who stores the storehouse.
Preferably, dissolving tank top fixedly connected with apron, apron bottom front end fixedly connected with first baffle in the dissolving tank, rear end fixedly connected with second baffle in the dissolving tank, first baffle the place ahead in the dissolving tank is first cavity, be the second cavity between first baffle in the dissolving tank and the second baffle, second baffle rear in the dissolving tank is the third cavity, the equal fixedly connected with servo motor in the apron top of first cavity, second cavity and third cavity top, the lower extreme of the equal fixedly connected with pivot of servo motor's output and pivot all runs through the apron and extends to the dissolving tank, the equal fixedly connected with evenly distributed's of external diameter department stirring leaf of pivot.
Preferably, the first cavity and the second cavity are communicated with each other through the bottom of the first partition plate, and the second cavity and the third cavity are communicated with each other through the top of the second partition plate.
Preferably, the front end of the top of the dissolving tank is fixedly connected to the output end of the second screw pump through a pipeline, and the input end of the second screw pump is fixedly connected to the pipeline between the dissolving tank and the third screw pump through a pipeline.
Preferably, the liquid output end of the horizontal spiral sedimentation centrifuge is fixedly connected to the filtrate tank through a pipeline, and the solid output end of the horizontal spiral sedimentation centrifuge is fixedly connected to the ash residue tank through a pipeline.
Preferably, the filtrate tank, the storage bin and the dissolving tank are all made of carbon steel and lined with FRP anticorrosive layers.
The working principle is as follows: when the fly ash is dissolved, filtrate obtained after solid-liquid separation of fly ash slurry in a filtrate tank is conveyed into an ejector through a first screw pump, then the filtrate is ejected at high speed through a nozzle of the ejector to convert pressure energy into velocity energy, vacuum is formed at the outlet area of the nozzle, so that fly ash in a storage bin is sucked down, the fly ash and the filtrate are premixed in a diffusion pipe of the ejector, the amount of the fly ash entering the ejector from the storage bin can be controlled through a dust flow meter, the fly ash and the filtrate can be mixed according to a certain weight proportion, the fly ash in the storage bin can smoothly fall down into the ejector through a vibration motor, the fly ash enters a dissolving tank after being premixed, the fly ash is plasticized, alcoholized and cured in a first cavity, a second cavity and a third cavity, the fly ash can be completely dissolved in the filtrate, a rotating shaft can be rotated by starting a servo motor, and a stirring blade is driven to rotate along with the rotating shaft, the first cavity, the second cavity and the third cavity are stirred to ensure uniform flow state of the fly ash slurry, and finally the third screw pump conveys most of the cured fly ash slurry to a horizontal spiral sedimentation centrifuge for solid-liquid separation, the separated liquid can be conveyed to a filtrate tank through a pipeline for reuse, the separated solid is conveyed to a ash residue tank through a pipeline, and a small part of the cured fly ash slurry flows back to the first cavity of the dissolving tank through the second screw pump, so that fly ash dissolution and rapid chlorine salt dissolution are facilitated.
(III) advantageous effects
The invention provides a continuous dissolving system for household garbage incineration fly ash. The method has the following beneficial effects:
1. the filter liquor obtained after solid-liquid separation of fly ash slurry in the filter liquor tank is conveyed to the ejector through the first screw pump, the fly ash in the storage bin is sucked down through the ejector, the fly ash is premixed in the ejector and then enters the dissolving tank, and the fly ash is plasticized, alcoholized and cured in the first cavity, the second cavity and the third cavity, so that the dissolution of the fly ash can be accelerated, the fly ash dissolution time is greatly shortened, continuous feeding and discharging can be realized, the dissolution process can be continuously carried out, the process flow is simpler, and the dissolution efficiency is greatly improved.
2. According to the invention, fly ash and filtrate are premixed in the jet device and then dissolved in the first cavity, the second cavity and the third cavity of the dissolving tank, so that the generation of flying dust can be greatly avoided, and the jet device is worth popularizing.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic view of the internal structure of the storage bin of the present invention;
FIG. 3 is a schematic view of the inner structure of the dissolution tank of the present invention.
Wherein, 1, a filtrate tank; 2. a first screw pump; 3. an ejector; 4. a storage bin; 5. a dust flow meter; 6. a one-way valve; 7. a dissolving tank; 8. a second screw pump; 9. a third screw pump; 10. a horizontal spiral sedimentation centrifuge; 11. a slag groove; 12. a pipeline; 13. an observation window; 14. a radar level gauge; 15. a vibration motor; 16. a feeding hopper; 17. a cover plate; 18. a first separator; 19. a second separator; 20. a first cavity; 21. a second cavity; 22. a third cavity; 23. a servo motor; 24. a rotating shaft; 25. stirring the leaves.
Detailed Description
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 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 invention.
Example (b):
as shown in fig. 1-3, an embodiment of the present invention provides a continuous dissolution system for fly ash from incineration of household garbage, which includes a filtrate tank 1, the filtrate tank 1 is fixedly connected to an input end of a first screw pump 2 through a pipeline 12, an output end of the first screw pump 2 is fixedly connected to an input end of an ejector 3 through a pipeline 12, and another input end of the ejector 3 is simultaneously fixedly connected to a bottom of a storage bin 4 through a pipeline 12, an output end of the ejector 3 is fixedly connected to a front end of a top of a dissolution tank 7 through a pipeline 12, a bottom of a rear end of the dissolution tank 7 is fixedly connected to an input end of a third screw pump 9 through a pipeline 12, an output end of the third screw pump 9 is fixedly connected to an input end of a horizontal screw sedimentation centrifuge 10 through a pipeline 12, when fly ash is dissolved, a filtrate obtained after solid-liquid separation of fly ash slurry in the filtrate tank 1 is firstly conveyed into the ejector 3 through the first screw pump 2, then the filtrate is ejected at high speed through a nozzle of the ejector 3, so that the pressure energy is converted into velocity energy, vacuum is formed in the outlet area of the nozzle, thereby flying ash in the storage bin 4 is sucked down, the flying ash and the filtrate are premixed in a diffusion pipe of the ejector 3, then the mixture enters a dissolving tank 7 for plasticizing, alcoholizing and curing, and most of cured flying ash slurry is conveyed to a horizontal spiral sedimentation centrifuge 10 through a third screw pump 9 for solid-liquid separation.
The pipeline 12 between the ejector 3 and the storage bin 4 is provided with a dust flow meter 5 and a one-way valve 6, the amount of fly ash entering the ejector 3 from the storage bin 4 can be controlled through the dust flow meter 5, so that the fly ash and the filtrate can be mixed according to a certain weight proportion, the fly ash dissolution efficiency is higher, and meanwhile, the one-way valve 6 is used for preventing the filtrate from flowing back into the storage bin 4.
Store 4 top one side fixedly connected with in storehouse and throw material hopper 16 opening part threaded connection and have sealed lid, store 4 top opposite side fixedly connected with radar charge level indicator 14 in storehouse, store one side fixedly connected with observation window 13 in storehouse 4, store the opposite side outer wall fixedly connected with vibrating motor 15 of storehouse 4, can be to storing the interior fly ash that drops into of storehouse 4 through throwing material hopper 16, sealed lid is in order to prevent to dissolve the in-process, because vibrating motor 15's work leads to the raise dust, and radar charge level indicator 14 and observation window 13 are all for more accurate, audio-visual flying dust volume in the storehouse 4 of seeing, prevent to lead to unable dissolving because of the flying dust is not enough, thereby guarantee going on smoothly of dissolving the process, and vibrating motor 15 is in order to make the fly ash that stores in the storehouse 4 can be more smooth the falling entering ejector 3.
The top of the dissolving tank 7 is fixedly connected with a cover plate 17, the front end of the bottom of the cover plate 17 in the dissolving tank 7 is fixedly connected with a first partition plate 18, the rear end of the dissolving tank 7 is fixedly connected with a second partition plate 19, the front part of the first partition plate 18 in the dissolving tank 7 is provided with a first cavity 20, a second cavity 21 is arranged between the first partition plate 18 and the second partition plate 19 in the dissolving tank 7, the rear part of the second partition plate 19 in the dissolving tank 7 is provided with a third cavity 22, the tops of the cover plate 17 above the first cavity 20, the second cavity 21 and the third cavity 22 are all fixedly connected with a servo motor 23, the output end of the servo motor 23 is all fixedly connected with a rotating shaft 24, the lower end of the rotating shaft 24 all penetrates through the cover plate 17 and extends into the dissolving tank 7, the outer diameter of the rotating shaft 24 is all fixedly connected with uniformly distributed stirring blades 25, when the fly ash is dissolved, the fly ash and the filtrate are firstly premixed in the ejector 3 and then enter the dissolving tank 7, and plasticizing, alcoholizing and aging are carried out in the first cavity 20, the second cavity 21 and the third cavity 22, so that the fly ash can be completely dissolved in the filtrate, the rotating shaft 24 can be rotated and the stirring blade 25 is driven to rotate by starting the servo motor 23, and the first cavity 20, the second cavity 21 and the third cavity 22 are stirred, thus ensuring the uniform flow state of the fly ash slurry.
The first cavity 20 and the second cavity 21 are communicated with each other through the bottom of the first partition 18, and the second cavity 21 and the third cavity 22 are communicated with each other through the top of the second partition 19.
The front end of the top of the dissolving tank 7 is fixedly connected to the output end of the second screw pump 8 through a pipeline 12, the input end of the second screw pump 8 is fixedly connected to the pipeline 12 between the dissolving tank 7 and the third screw pump 9 through the pipeline 12, and a small part of cured fly ash slurry in the dissolving tank 7 flows back to the first cavity 20 of the dissolving tank 7 through the second screw pump 8, so that fly ash dissolution and rapid chlorine salt dissolution are facilitated.
The liquid output end of the horizontal spiral sedimentation centrifuge 10 is fixedly connected to the filtrate tank 1 through a pipeline 12, the solid output end of the horizontal spiral sedimentation centrifuge 10 is fixedly connected to the ash residue tank 11 through a pipeline 12, after the horizontal spiral sedimentation centrifuge 10 performs solid-liquid separation, the separated liquid can be conveyed to the filtrate tank 1 through the pipeline 12 for repeated use, the cost is saved, and the separated solid is conveyed to the ash residue tank 11 through the pipeline 12.
The filtrate tank 1, the storage bin 4 and the dissolving tank 7 are made of carbon steel and lined with FRP anticorrosive layers.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a continuous dissolving system of domestic waste incineration fly ash, includes filtrate groove (1), its characterized in that: filtrate groove (1) is through the input of pipeline (12) fixed connection at first screw pump (2), the output of first screw pump (2) passes through the input of pipeline (12) fixed connection in ejector (3), and another input of ejector (3) is simultaneously through pipeline (12) fixed connection in storage storehouse (4) bottom, the output of ejector (3) passes through pipeline (12) fixed connection at dissolving tank (7) top front end, dissolving tank (7) rear end bottom passes through pipeline (12) fixed connection at the input of third screw pump (9), the output of third screw pump (9) passes through pipeline (12) fixed connection at the input of horizontal screw sedimentation centrifuge (10).
2. The continuous dissolution system of fly ash from incineration of household garbage according to claim 1, wherein: and a dust flow meter (5) and a one-way valve (6) are arranged on a pipeline (12) between the ejector (3) and the storage bin (4).
3. The continuous dissolution system of fly ash from incineration of household garbage according to claim 1, wherein: store storehouse (4) top one side fixedly connected with throw material funnel (16) and throw material funnel (16) opening part threaded connection and have sealed lid, store storehouse (4) top opposite side fixedly connected with radar charge level indicator (14), one side fixedly connected with observation window (13) of storage storehouse (4), the opposite side outer wall fixedly connected with vibrating motor (15) of storage storehouse (4).
4. The continuous dissolution system of fly ash from incineration of household garbage according to claim 1, wherein: the top of the dissolving tank (7) is fixedly connected with a cover plate (17), the front end of the bottom of the cover plate (17) in the dissolving tank (7) is fixedly connected with a first clapboard (18), the rear end of the dissolving tank (7) is fixedly connected with a second clapboard (19), the front of the first clapboard (18) in the dissolving tank (7) is a first cavity (20), a second cavity (21) is arranged between the first clapboard (18) and the second clapboard (19) in the dissolving tank (7), the rear of the second clapboard (19) in the dissolving tank (7) is a third cavity (22), the tops of the cover plate (17) above the first cavity (20), the second cavity (21) and the third cavity (22) are all fixedly connected with a servo motor (23), the output end of the servo motor (23) is all fixedly connected with a rotating shaft (24), and the lower end of the rotating shaft (24) all penetrates through the cover plate (17) and extends into the dissolving tank (7), the outer diameter of the rotating shaft (24) is fixedly connected with stirring blades (25) which are uniformly distributed.
5. The continuous dissolution system of fly ash from incineration of household garbage according to claim 4, wherein: the first cavity (20) and the second cavity (21) are communicated with each other through the bottom of the first partition plate (18), and the second cavity (21) and the third cavity (22) are communicated with each other through the top of the second partition plate (19).
6. The continuous dissolution system of fly ash from incineration of household garbage according to claim 1, wherein: the front end of the top of the dissolving tank (7) is fixedly connected to the output end of the second screw pump (8) through a pipeline (12), and the input end of the second screw pump (8) is fixedly connected to the pipeline (12) between the dissolving tank (7) and the third screw pump (9) through the pipeline (12).
7. The continuous dissolution system of fly ash from incineration of household garbage according to claim 1, wherein: the liquid output end of the horizontal spiral sedimentation centrifuge (10) is fixedly connected to the filtrate tank (1) through a pipeline (12), and the solid output end of the horizontal spiral sedimentation centrifuge (10) is fixedly connected to the ash residue tank (11) through a pipeline (12).
8. The continuous dissolution system of fly ash from incineration of household garbage according to claim 1, wherein: the filtrate tank (1), the storage bin (4) and the dissolving tank (7) are all made of carbon steel and lined with FRP anticorrosive layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011643440.0A CN113414211A (en) | 2020-12-30 | 2020-12-30 | Continuous dissolving system of domestic waste incineration fly ash |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011643440.0A CN113414211A (en) | 2020-12-30 | 2020-12-30 | Continuous dissolving system of domestic waste incineration fly ash |
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| Publication Number | Publication Date |
|---|---|
| CN113414211A true CN113414211A (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011643440.0A Pending CN113414211A (en) | 2020-12-30 | 2020-12-30 | Continuous dissolving system of domestic waste incineration fly ash |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680222A (en) * | 2021-09-23 | 2021-11-23 | 福州市福化环保科技有限公司 | Dangerous useless liquid storage pot DMF residue dissolving system of handling factory |
| CN115069742A (en) * | 2022-06-13 | 2022-09-20 | 吉安创成环保科技有限责任公司 | Treatment method of fly ash with high mercury content |
| CN115125397A (en) * | 2022-06-16 | 2022-09-30 | 湖南建勋环保资源科技发展有限公司 | Raw material sorting device for smelting precious metals by using recycled materials |
-
2020
- 2020-12-30 CN CN202011643440.0A patent/CN113414211A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113680222A (en) * | 2021-09-23 | 2021-11-23 | 福州市福化环保科技有限公司 | Dangerous useless liquid storage pot DMF residue dissolving system of handling factory |
| CN115069742A (en) * | 2022-06-13 | 2022-09-20 | 吉安创成环保科技有限责任公司 | Treatment method of fly ash with high mercury content |
| CN115069742B (en) * | 2022-06-13 | 2023-04-18 | 吉安创成环保科技有限责任公司 | Treatment method of fly ash with high mercury content |
| CN115125397A (en) * | 2022-06-16 | 2022-09-30 | 湖南建勋环保资源科技发展有限公司 | Raw material sorting device for smelting precious metals by using recycled materials |
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