CN112594728A - Domestic waste incineration fly ash classification treatment system - Google Patents
Domestic waste incineration fly ash classification treatment system Download PDFInfo
- Publication number
- CN112594728A CN112594728A CN202011438327.9A CN202011438327A CN112594728A CN 112594728 A CN112594728 A CN 112594728A CN 202011438327 A CN202011438327 A CN 202011438327A CN 112594728 A CN112594728 A CN 112594728A
- Authority
- CN
- China
- Prior art keywords
- fly ash
- type dust
- flue gas
- dust collector
- bag
- 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.)
- Pending
Links
- 239000010881 fly ash Substances 0.000 title claims abstract description 52
- 238000004056 waste incineration Methods 0.000 title abstract description 13
- 239000010791 domestic waste Substances 0.000 title description 9
- 239000000428 dust Substances 0.000 claims abstract description 54
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000003546 flue gas Substances 0.000 claims abstract description 41
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 14
- 230000009920 chelation Effects 0.000 claims abstract description 11
- 238000007711 solidification Methods 0.000 claims abstract description 10
- 230000008023 solidification Effects 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 239000006227 byproduct Substances 0.000 claims abstract description 8
- 239000003517 fume Substances 0.000 claims description 6
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract 1
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 5
- 239000000779 smoke Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- 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
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a household garbage incineration fly ash grading treatment system which comprises a primary bag-type dust remover, a SDA deacidification system, a secondary bag-type dust remover, an SCR denitration system, a chimney, a fly ash chelation and solidification system and a byproduct comprehensive utilization system. The waste incineration flue gas sequentially passes through a primary bag-type dust collector, a SDA deacidification system, a secondary bag-type dust collector and an SCR denitration system and is finally discharged through a chimney; the activated carbon is sprayed into the connecting pipeline before the waste incineration flue gas enters the primary bag-type dust collector; fly ash filtered by the primary bag-type dust collector enters a fly ash chelation and solidification system; in the actual production process, the flue gas firstly reacts with the active carbon to remove dioxin, and then is further purified by a dedusting, deacidification and denitration device, and finally is discharged through a chimney after reaching the standard. One part of the filtered fly ash can be treated in a centralized way through a chelating and solidifying system, and the other part of the fly ash can be treated through a treatment system, so that the comprehensive utilization of byproducts is realized, and the fly ash treatment cost is reduced.
Description
Technical Field
The invention belongs to the technical field of waste incineration, and particularly relates to a household garbage incineration fly ash grading treatment system.
Background
In recent years, the household garbage incineration technology is rapidly developed, and the technology is currently the leading technology for treating urban household garbage in China. The so-called domestic waste incineration technology is to treat domestic waste through a violent high-temperature thermochemical reaction process, but smoke generated by high-temperature incineration can cause serious influence on the environment, so the treatment of the incineration smoke attracts social and public attention. The standard for controlling pollution of domestic waste incineration (GB18485-2014) stipulates limits on the discharge amount of dust, acid gas and nitrogen oxide in incineration flue gas, and simultaneously requires that the fly ash from domestic waste incineration should be managed according to hazardous waste.
Aiming at the problem of incineration flue gas pollution, at present, domestic waste incineration flue gas is generally treated by adopting an industrial flue gas purification process in China, so that the discharge amount of dust, acid gas, nitric oxide and dioxin in the incineration flue gas reaches the national discharge standard, but the problem of treatment of fly ash is still the weakest link in pollution control and risk management of the whole process of domestic waste incineration. At present, the fly ash is treated as dangerous waste independently, and cannot be mixed with household garbage, incineration garbage residue and the like, and cannot be mixed with other dangerous waste. The fly ash treatment cost is high, the comprehensive utilization rate is low, and the fly ash treatment difficulty is greatly increased. In order to solve the problem, a new scheme is provided by combining the existing domestic garbage incineration flue gas purification process in China.
Disclosure of Invention
The invention aims to provide a household garbage incineration fly ash grading treatment system.
The purpose of the invention can be realized by the following technical scheme:
a household garbage incineration fly ash grading treatment system comprises a primary bag-type dust remover, an SDA deacidification system, a secondary bag-type dust remover, an SCR denitration system, a chimney, a fly ash chelation and solidification system and a byproduct comprehensive utilization system;
one air inlet end of the primary bag-type dust collector is connected with the front-end garbage incineration system;
the fume inlet of the SDA deacidification system is connected with the fume outlet of the primary bag-type dust remover, and the secondary bag-type dust remover is connected with the fume outlet of the SDA deacidification system;
the flue gas inlet of the SCR denitration system is connected with the flue gas outlet of the secondary bag-type dust collector, and the chimney is connected with the flue gas outlet of the SCR denitration system;
an active carbon adding port is arranged in front of a flue gas inlet of the primary bag-type dust collector and is used for mixing active carbon into flue gas entering the primary bag-type dust collector;
and a fly ash outlet of the primary bag-type dust collector is connected with a feed inlet of a fly ash chelation and solidification system.
As a further scheme of the invention, the fly ash chelation and solidification system is a fly ash solidification and chelation device.
As a further aspect of the invention, the SDA deacidification system is an SDA reactor.
As a further scheme of the invention, the SCR denitration system is an SCR denitration reactor.
The invention has the beneficial effects that:
compared with the prior art, the invention is optimized on the basis of the existing flue gas purification process, can absorb dust, SO2, NOx and dioxin in incineration flue gas, and carries out classification treatment on fly ash, thereby improving the comprehensive utilization rate of the fly ash, reducing the amount of the fly ash treated according to the solid waste standard, further saving the cost and reducing the treatment difficulty of the fly ash.
Drawings
The invention is described in further detail below with reference to the figures and specific embodiments.
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
A household garbage incineration fly ash grading treatment system comprises a primary bag-type dust remover, an SDA deacidification system, a secondary bag-type dust remover, an SCR denitration system, a chimney, a fly ash chelation and solidification system and a byproduct comprehensive utilization system;
the smoke inlet of the primary bag-type dust collector is connected with the front-end waste incineration system, and the primary bag-type dust collector is used for carrying out primary separation on smoke and removing large-particle fly ash and activated carbon particles in the smoke;
the SDA deacidification system is used for desulfurizing flue gas subjected to deashing by the primary bag-type dust remover, and in one embodiment of the invention, the SDA deacidification system is an SDA reactor;
the flue gas inlet of the secondary bag-type dust collector is connected with the flue gas outlet of the SDA deacidification system, and the secondary bag-type dust collector is used for carrying out secondary separation on the flue gas to remove residual fly ash and crushed small active carbon particles in the flue gas;
the flue gas inlet of the SCR denitration system is connected with the flue gas outlet of the secondary bag-type dust collector; the chimney is connected with a flue gas outlet of the SCR denitration system, the SCR denitration system is used for denitration of flue gas treated by the secondary bag-type dust collector, and in one embodiment of the invention, the SCR denitration system is an SCR denitration reactor;
when the dust remover works, incineration flue gas firstly passes through a primary bag-type dust remover to carry out a dust removing process; then the flue gas after primary dust removal sequentially passes through an SDA deacidification system, a secondary bag-type dust remover and an SCR denitration system to achieve the effects of flue gas deacidification, dust removal, denitration and the like; the purified flue gas is discharged through a chimney, and the national emission requirements are met.
An active carbon adding port is arranged in front of a flue gas inlet of the primary bag-type dust collector and is used for mixing active carbon into flue gas entering the primary bag-type dust collector;
the activated carbon is sprayed into the connecting pipeline before the waste incineration flue gas enters the primary bag-type dust collector; the particles filtered by the primary bag-type dust collector enter a fly ash chelation and solidification system;
removing dioxin in incineration flue gas by using the adsorption effect of activated carbon; the used active carbon is removed through a primary bag-type dust remover along with the flue gas, and the dust concentration at the outlet of the primary bag-type dust remover is less than 5mg/Nm 3; the removed fly ash enters a fly ash chelation and solidification system for centralized treatment after treatment;
fly ash generated by the SDA deacidification system and the secondary bag-type dust collector enters a byproduct comprehensive utilization system;
the byproduct comprehensive utilization system is used for collecting fly ash generated by the SDA deacidification system and the secondary bag-type dust collector;
flue gas from which dioxin and most of fly ash are removed passes through an SDA deacidification system and a secondary bag-type dust collector, fly ash generated by reaction is left in the system, and the heavy metal content of the fly ash is less than or equal to 0.5 mg/kg; the generated fly ash is discharged from the SDA deacidification system and the secondary bag-type dust collector and enters a byproduct comprehensive utilization system, so that the comprehensive utilization of the fly ash is realized.
This kind of be used for domestic waste incineration fly ash grading treatment system optimizes on current gas cleaning system, not only can absorb dust, SO2, NOx and dioxin in the incineration flue gas to carry out the grading treatment to the fly ash, improve the comprehensive utilization ratio of fly ash, reduce the fly ash volume of handling according to solid useless standard, and then practice thrift the cost, reduce the fly ash and handle the degree of difficulty.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (4)
1. A classification treatment system for household garbage incineration fly ash is characterized by comprising a primary bag-type dust remover, a SDA deacidification system, a secondary bag-type dust remover, an SCR denitration system, a chimney, a fly ash chelation curing system and a byproduct comprehensive utilization system;
one air inlet end of the primary bag-type dust collector is connected with the front-end garbage incineration system;
the fume inlet of the SDA deacidification system is connected with the fume outlet of the primary bag-type dust remover, and the secondary bag-type dust remover is connected with the fume outlet of the SDA deacidification system;
the flue gas inlet of the SCR denitration system is connected with the flue gas outlet of the secondary bag-type dust collector, and the chimney is connected with the flue gas outlet of the SCR denitration system;
an active carbon adding port is arranged in front of a flue gas inlet of the primary bag-type dust collector and is used for mixing active carbon into flue gas entering the primary bag-type dust collector;
and a fly ash outlet of the primary bag-type dust collector is connected with a feed inlet of a fly ash chelation and solidification system.
2. The classification treatment system for fly ash generated in incineration of household garbage according to claim 1, wherein the fly ash chelating and curing system is a fly ash chelating and curing device.
3. The system of claim 1, wherein the SDA deacidification system is an SDA reactor.
4. The system of claim 1, wherein the SCR denitration system is an SCR denitration reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438327.9A CN112594728A (en) | 2020-12-07 | 2020-12-07 | Domestic waste incineration fly ash classification treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011438327.9A CN112594728A (en) | 2020-12-07 | 2020-12-07 | Domestic waste incineration fly ash classification treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112594728A true CN112594728A (en) | 2021-04-02 |
Family
ID=75192295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011438327.9A Pending CN112594728A (en) | 2020-12-07 | 2020-12-07 | Domestic waste incineration fly ash classification treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112594728A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843255A (en) * | 2021-09-13 | 2021-12-28 | 生态环境部华南环境科学研究所 | Sectional type stabilization treatment method and system for household garbage incineration fly ash |
| CN116474504A (en) * | 2023-05-26 | 2023-07-25 | 重庆三峰环境集团股份有限公司 | Flue gas treatment method and system for reducing and recycling waste incineration fly ash |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150139882A1 (en) * | 2013-11-15 | 2015-05-21 | Babcock & Wilcox Power Generation Group, Inc. | Integrated sorbent injection and flue gas desulfurization system |
| CN104722181A (en) * | 2015-02-04 | 2015-06-24 | 绿色动力环保集团股份有限公司 | Combined deacidifying and dedusting method and system of domestic garbage incineration flue gas |
| CN105968349A (en) * | 2016-05-27 | 2016-09-28 | 上海京尔环保科技有限公司 | Chelating agent for waste incineration and application thereof |
| CN106402898A (en) * | 2016-11-03 | 2017-02-15 | 江苏景南环保科技有限公司 | Dioxin treatment system of hazardous waste incineration furnace |
| CN206566758U (en) * | 2017-03-07 | 2017-10-20 | 安徽欣创节能环保科技股份有限公司 | A kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device |
| CN208959499U (en) * | 2018-08-15 | 2019-06-11 | 华西能源工程有限公司 | A kind of burning power plant flue gas efficient purifying system |
-
2020
- 2020-12-07 CN CN202011438327.9A patent/CN112594728A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150139882A1 (en) * | 2013-11-15 | 2015-05-21 | Babcock & Wilcox Power Generation Group, Inc. | Integrated sorbent injection and flue gas desulfurization system |
| CN104722181A (en) * | 2015-02-04 | 2015-06-24 | 绿色动力环保集团股份有限公司 | Combined deacidifying and dedusting method and system of domestic garbage incineration flue gas |
| CN105968349A (en) * | 2016-05-27 | 2016-09-28 | 上海京尔环保科技有限公司 | Chelating agent for waste incineration and application thereof |
| CN106402898A (en) * | 2016-11-03 | 2017-02-15 | 江苏景南环保科技有限公司 | Dioxin treatment system of hazardous waste incineration furnace |
| CN206566758U (en) * | 2017-03-07 | 2017-10-20 | 安徽欣创节能环保科技股份有限公司 | A kind of SDA methods flue gas desulfurization technique accessory substance self-loopa synergistic device |
| CN208959499U (en) * | 2018-08-15 | 2019-06-11 | 华西能源工程有限公司 | A kind of burning power plant flue gas efficient purifying system |
Non-Patent Citations (1)
| Title |
|---|
| 陈清如主编: "《中国洁净煤》", 30 September 2009, 中国矿业大学出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843255A (en) * | 2021-09-13 | 2021-12-28 | 生态环境部华南环境科学研究所 | Sectional type stabilization treatment method and system for household garbage incineration fly ash |
| CN113843255B (en) * | 2021-09-13 | 2023-10-27 | 生态环境部华南环境科学研究所 | Sectional type stabilization treatment method and system for household garbage incineration fly ash |
| CN116474504A (en) * | 2023-05-26 | 2023-07-25 | 重庆三峰环境集团股份有限公司 | Flue gas treatment method and system for reducing and recycling waste incineration fly ash |
| CN116474504B (en) * | 2023-05-26 | 2024-02-13 | 重庆三峰环境集团股份有限公司 | Flue gas treatment method and system for reducing and recycling waste incineration fly ash |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021103339A1 (en) | Flue gas purification and waste heat utilization system and method | |
| CN106861415B (en) | Flue gas purification system and method | |
| CN109966812A (en) | A kind of cement kiln end denitrating flue gas and system, the process of waste heat recycling | |
| WO2018192564A1 (en) | Flue gas purification system for domestic waste pyrolysis incinerator | |
| CN112594728A (en) | Domestic waste incineration fly ash classification treatment system | |
| CN203886406U (en) | Tail gas purification device of circulating fluid bed garbage incinerator | |
| CN202224052U (en) | Device for removing mercury in coal-fired power plant with wet flue gas desulfurization wastewater | |
| CN102824837A (en) | Complete equipment and method for wet processing of sludge incineration offgas | |
| CN101822942A (en) | Wet purification method for dioxin and heavy metals in solid waste incineration gas | |
| WO2023284636A1 (en) | Hazardous waste incineration flue gas purification system and purification method | |
| CN111389166A (en) | Hazardous waste incinerator tail gas purification process | |
| CN101428189B (en) | Apparatus and method for removing inhalation particulate matter of fire coal at front body to implement zero discharge of carbonic anhydride | |
| CN114534160A (en) | Secondary aluminum ash recycling treatment agent and application method thereof | |
| CN202237678U (en) | Refuse burning flue gas purifying device | |
| CN201832542U (en) | Selective flue gas desulfuration and denitration apparatus for sintering machines | |
| CN213077965U (en) | Dry type reaction device for tail gas treatment system | |
| CN105222143A (en) | Mercury removal device and method are worked in coordination with in one kind of multiple gas cleanings | |
| CN202398249U (en) | Calcium carbide furnace tail gas mixing purification system utilizing bag dedusting | |
| CN202224048U (en) | Sintering flue gas treatment device | |
| CN110585897A (en) | High-temperature smoke dust and SO removal3Method (2) | |
| CN217855500U (en) | Coal-fired flue gas treatment system | |
| CN115178090A (en) | Coal-fired flue gas treatment system and method | |
| CN212651583U (en) | Dual cycle formula active carbon separation is analytic msw incineration flue gas processing system | |
| CN113941247A (en) | System and method for capturing carbon dioxide in steel sintering flue gas | |
| CN212841617U (en) | Ultralow discharging equipment of sludge drying incineration tail gas |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210402 |