CN114471105A - Solid waste incinerator tail gas treatment process - Google Patents
Solid waste incinerator tail gas treatment process Download PDFInfo
- Publication number
- CN114471105A CN114471105A CN202111650421.5A CN202111650421A CN114471105A CN 114471105 A CN114471105 A CN 114471105A CN 202111650421 A CN202111650421 A CN 202111650421A CN 114471105 A CN114471105 A CN 114471105A
- Authority
- CN
- China
- Prior art keywords
- unit
- tail gas
- deacidification
- solid waste
- treatment process
- 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
- 239000002910 solid waste Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000008569 process Effects 0.000 title claims abstract description 24
- 239000000428 dust Substances 0.000 claims abstract description 70
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000001179 sorption measurement Methods 0.000 claims abstract description 9
- 239000002920 hazardous waste Substances 0.000 claims abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 37
- 239000003546 flue gas Substances 0.000 claims description 37
- 239000007789 gas Substances 0.000 claims description 28
- 239000002956 ash Substances 0.000 claims description 24
- 238000002347 injection Methods 0.000 claims description 14
- 239000007924 injection Substances 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 14
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 10
- 239000010881 fly ash Substances 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 2
- 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 8
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 8
- 239000002699 waste material Substances 0.000 abstract description 6
- 229910052745 lead Inorganic materials 0.000 description 7
- 229910052753 mercury Inorganic materials 0.000 description 7
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 6
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 238000004056 waste incineration Methods 0.000 description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- 239000004202 carbamide Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 239000012717 electrostatic precipitator Substances 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000010791 domestic waste Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000009270 solid waste treatment Methods 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- -1 NO)X Substances 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010882 bottom ash Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
- B01D47/08—Spray cleaning with rotary nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a process for treating tail gas of a solid waste incinerator, which comprises a denitration unit, a primary dedusting and deacidification unit, a hazardous waste adsorption unit, a secondary dedusting unit and a discharge unit which are sequentially connected through a flue. According to the invention, the primary dust removal device is added before the activated carbon adsorbs dangerous solid wastes such as dioxin, heavy metals and the like, so that part of common solid wastes are collected, the integral dust removal rate is improved, and the content of the common solid wastes in the dangerous wastes collected by the secondary dust removal device is reduced, thereby reducing the treatment capacity of the dangerous wastes and reducing the treatment cost.
Description
Technical Field
The invention belongs to the field of tail gas treatment, and particularly relates to a process for treating tail gas of a solid waste incinerator.
Background
In recent years, with the development of the economic level of China and the improvement of the living standard of people, various solid waste garbage is increasing day by day. At present, the treatment of solid waste is mainly sanitary landfill and incineration. In recent years, the solid waste treatment market is developed rapidly, the market prospect is wide, and incineration power generation gradually replaces landfill and becomes a main mode of solid waste treatment. The solid waste mainly comprises domestic waste and production waste, the solid waste has complex general components, high water content and low heat value, and the solid waste is burnt insufficiently and is easy to generate secondary pollution. The tail gas after solid waste incineration mostly contains acidic gases (such as NO)X、HCl、SOXHF, etc.), dioxin (PCDDS/PCDFS), and heavy metals (Hg, Pb), which would cause serious environmental pollution if discharged directly without treatment.
The paper "research on waste incineration flue gas purification process" (LinYuze; Yangchang; Sungqi; Zhang break Yu; Huangyueqin; research on waste incineration flue gas purification process [ J ]; scientific technological innovation; 32 years 2018; page 151-) -152) indicates that:
the Shanghai Jiangqiao domestic waste incineration plant adopts the processes of 'SNCR (urea) + dry method + bag-type dust remover + wet washing tower', and simultaneously sprays slaked lime and activated carbon in front of the bag-type dust remover to treat flue gas, and the energy expansion project is characterized in that a wet deacidification system is added behind the dust remover, and the dry method + wet method process can ensure that the removal rates of HCl and SO2 are respectively 99% and 97%.
A large-roof mountain garbage incineration plant in a large continuous development area adopts the processes of SNCR (urea), a semi-dry method, a dry method (sodium bicarbonate), activated carbon injection and a bag-type dust remover, an absorbent is lime slurry, the sodium bicarbonate is reserved, and the index of flue gas after treatment is far ahead of the national standard.
A waste incineration power plant in Haian county of Nantong city of Jiangsu province adopts the processes of SNCR (urea), a semi-dry method, a dry method (sodium bicarbonate), activated carbon injection, a bag type dust collector and SCR, and adopts a low-temperature SCR technology and TiO2 as a catalyst carrier, so that various pollutants can meet the requirements of European Union environmental standard system 2000.
At present, the waste incineration plants in China mainly adopt the processes of SNCR, semi-dry deacidification, activated carbon injection and bag-type dust remover to treat smoke, and can meet the current national emission standard of pollutants in smoke. However, the content of dust in the flue gas at the outlet of the incinerator is generally 20g/Nm3, the dust is mostly non-combustible inorganic matter, combustible components are changed into gas through combustion, and the gas contains a lot of acidic substances, and toxic gases such as dioxin (PCDDS/PCDFS) and heavy metals (Hg and Pb) and the like. Although the toxic gas can be removed by the process, the toxic and harmful gas pollutants are completely collected into the dedusting ash by the bag-type dust collector, so that a large amount of dedusting ash cannot be comprehensively utilized, the yield of the dedusting ash is high, and the treatment cost is increased due to large amount of the dedusting ash during treatment.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a process for treating tail gas of a solid waste incinerator so as to reduce the treatment capacity of hazardous waste.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a solid useless incinerator tail gas treatment process, include the denitration unit that connects gradually through the flue, one-level dust removal deacidification unit, the useless adsorption unit of danger, second grade dust removal unit and discharge unit, burn the useless produced tail gas of solid in the boiler and remove nitric oxide through the denitration unit earlier, then remove ordinary solid useless and acid gas at one-level dust removal deacidification unit, after the useless adsorption unit of danger adsorbs the dangerous solid useless, second grade dust removal unit will be dangerous and useless admittedly handle, tail gas discharges through the discharge unit at last.
Further, the denitration unit is an SNCR denitration device.
Further, the primary dedusting and deacidifying unit comprises an SDA deacidifying tower, a flue gas distributor is arranged at the top of the SDA deacidifying tower, a rotary atomizer is arranged at the top of the SDA deacidifying tower, and an ash bucket of the SDA deacidifying tower is connected with a fly ash conveying and storing system.
Further, the primary dedusting and deacidifying unit also comprises a first bag-type dust remover, the gas outlet of the SDA deacidifying tower is communicated with the inlet of the first bag-type dust remover, and the ash hopper of the first bag-type dust remover is also connected with a fly ash conveying and storing system.
Further, the primary dedusting and deacidifying unit further comprises an electric dust remover, the electric dust remover is arranged in an inlet flue of the SDA deacidifying tower, and an ash hopper of the electric dust remover is also connected with a fly ash conveying and storing system.
Furthermore, the dangerous waste adsorption unit is an activated carbon injection system, and an activated carbon nozzle of the activated carbon injection system is connected into a flue between the primary dedusting and deacidifying unit and the secondary dedusting unit.
Further, the secondary dust removal unit comprises a second bag-type dust remover, and an ash bucket of the second bag-type dust remover is connected with a dangerous solid waste conveying and storing system.
Further, the discharge unit comprises a chimney, and an induced draft fan is arranged in an inlet flue of the chimney.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the primary dust removal device is added before the activated carbon adsorbs dangerous solid wastes such as dioxin (PCDDS/PCDFS) and heavy metals (Hg, Pb) to collect part of common solid wastes, so that the overall dust removal rate is improved, the load of the dust remover is reduced, and the content of the common solid wastes in the dangerous wastes collected by the secondary dust removal device is reduced, thereby reducing the treatment capacity of the dangerous wastes and reducing the treatment cost.
Drawings
FIG. 1 is a schematic structural view of example 1 of the present invention;
FIG. 2 is a schematic structural diagram of example 2 of the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1. SNCR denitrification facility, 2, SDA deacidification tower, 3, flue gas distributor, 4, flying dust transport storage system, 5, first sack cleaner, 6, electrostatic precipitator, 7, active carbon injection system, 8, second sack cleaner, 9, dangerous solid useless transport storage system, 10, chimney, 11, draught fan, 12, rotatory atomizer.
Detailed Description
The present invention is further described in detail below with reference to specific examples so that those skilled in the art can more clearly understand the present invention.
Example 1
The process for treating the tail gas of the solid waste incinerator shown in fig. 1 comprises an SNCR denitration device 1, an SDA deacidification tower 2, a first bag-type dust remover 5, an activated carbon injection system 7, a second bag-type dust remover 8 and a chimney 10 which are connected in sequence.
The ash bucket of the SDA deacidification tower 2 is connected with a fly ash conveying and storing system 4, the ash bucket of the first bag-type dust collector 5 is also connected with the fly ash conveying and storing system 4 to collect common solid waste, and the ash bucket of the second bag-type dust collector 8 is connected with a dangerous solid waste conveying and storing system 9 to collect dangerous solid waste.
The flue gas generated by incineration reacts under the action of the SNCR denitration device 1, so that nitrogen oxides in the flue gas are reduced by urea to form carbon dioxide and nitrogen, and the denitrated flue gas enters the SDA deacidification tower 2.
The SDA deacidification tower 2 removes acidic substances (sulfur dioxide, hydrogen chloride and hydrogen fluoride) in the flue gas by adopting a slaked lime slurry atomization spraying mode, partial dust in the flue gas is stored in an ash hopper at the lower part of the SDA deacidification tower 2 together with a deacidification product under the action of gravity, and a flue gas outlet is arranged at the lower part of the ash hopper of the SDA deacidification tower 2.
Specifically, the top of the SDA deacidification tower 2 is provided with a flue gas distributor 3 for guiding inlet flue gas, and the upper part in the SDA deacidification tower 2 is provided with a rotary atomizer 12 for atomizing and spraying lime slurry.
The flue gas after deacidification enters a first bag-type dust collector 5 through a flue gas outlet of an SDA deacidification tower 2 to remove particles in the flue gas, the first bag-type dust collector 5 is connected with a second bag-type dust collector 8 through a flue, an activated carbon nozzle of an activated carbon injection system 7 is connected into the flue between the first bag-type dust collector 5 and the second bag-type dust collector 8, activated carbon is injected into the flue between the first bag-type dust collector 5 and the second bag-type dust collector 8, and the injected activated carbon and dioxin (PCDDS/PCDFS) and heavy metals (Hg, Pb) in the flue gas are rapidly adsorbed and enter the second bag-type dust collector 8 along with the flue gas. The second bag-type dust collector 8 collects and stores activated carbon, dioxin (PCDDS/PCDFS), heavy metals (Hg, Pb), and the like in the flue gas in an ash hopper of the second bag-type dust collector 8.
The chimney 10 is provided with an induced draft fan 11 to accelerate the emission of the treated flue gas.
This embodiment sets up first sack cleaner 5 and second sack cleaner 8 respectively through the process around active carbon injection system 7, and ordinary solid useless is collected to first sack cleaner 5, and second sack cleaner 8 then collects the dangerous solid useless of active carbon adsorption, thereby reduce the ordinary content of giving up admittedly in the dangerous solid useless, thereby reduce the dangerous handling capacity of giving up admittedly, the use amount of curing agents such as cement promptly, reduce the treatment cost, simultaneously ordinary solid useless also can be according to the direct landfill of demand and handle or retrieve.
Example 2
The solid waste incinerator tail gas treatment process shown in fig. 2 comprises an SNCR denitration device 1, an electric dust remover 6, an SDA deacidification tower 2, an activated carbon injection system 7, a second bag-type dust remover 8 and a chimney 10 which are connected in sequence.
The ash bucket of the SDA deacidification tower 2 is connected with a fly ash conveying and storing system 4, the bottom ash bucket of the electric dust remover 6 is also connected with the fly ash conveying and storing system 4 to collect common solid waste, and the ash bucket of the second bag-type dust remover 8 is connected with a dangerous solid waste conveying and storing system 9 to collect dangerous solid waste.
The produced flue gas of burning reacts under the effect of SNCR denitrification facility 1 for nitrogen oxide in the flue gas is reduced by urea, forms carbon dioxide and nitrogen gas, and the flue gas after the denitration gets into electrostatic precipitator 6 and removes dust, gets rid of the non-organic matter dust that the burning produced in the flue gas, and this part dust is saved and is collected through electrostatic precipitator 6's ash bucket.
The SDA deacidification tower 2 removes acidic substances (sulfur dioxide and hydrogen chloride) in the flue gas by adopting a slaked lime slurry atomization spraying mode, the deacidification product is stored in an ash hopper at the lower part of the SDA deacidification tower 2, and a flue gas outlet is formed in the lower part of the ash hopper of the SDA deacidification tower 2.
Specifically, the top of the SDA deacidification tower 2 is provided with a flue gas distributor 3 for guiding inlet flue gas, and the upper part in the SDA deacidification tower 2 is provided with a rotary atomizer 12 for atomizing and spraying lime slurry.
The deacidified flue gas enters a second bag-type dust collector 8 through a flue gas outlet of the SDA deacidification tower 2, an activated carbon nozzle of the activated carbon injection system 7 is connected into a flue between the SDA deacidification tower 2 and the second bag-type dust collector 8, and the injected activated carbon, dioxin (PCDDS/PCDFS) and heavy metals (Hg, Pb) in the flue gas are quickly adsorbed and enter the second bag-type dust collector 8 along with the flue gas. The second bag-type dust collector 8 collects and stores activated carbon, dioxin (PCDDS/PCDFS), heavy metals (Hg, Pb), and the like in the flue gas in an ash hopper of the second bag-type dust collector 8.
The chimney 10 is provided with an induced draft fan 11 to accelerate the emission of the treated flue gas.
This embodiment sets up electrostatic precipitator 6 and second sack cleaner 8 respectively through the process around active carbon injection system 7, and electrostatic precipitator 6 collects ordinary useless admittedly, and second sack cleaner 8 then collects the dangerous useless admittedly of active carbon adsorption to reduce the content of the ordinary useless admittedly in the dangerous solid useless, thereby reduce the dangerous useless handling capacity admittedly, the quantity of use of curing agents such as cement promptly, reduce the treatment cost, simultaneously ordinary useless admittedly also can be according to the direct landfill of demand and handle or retrieve.
The mechanisms, components and parts of the present invention which are not described in detail are all the existing structures which exist in the prior art. Can be purchased directly from the market.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a solid useless incinerator tail gas treatment process, a serial communication port, include the denitration unit that connects gradually through the flue, one-level dust removal deacidification unit, the useless adsorption unit of danger, second grade dust removal unit and discharge unit, burn the produced tail gas of solid useless in the boiler and remove nitric oxide through denitration unit earlier, then remove ordinary solid useless and acid gas at one-level dust removal deacidification unit, after dangerous useless adsorption unit adsorbs dangerous solid useless through the danger, second grade dust removal unit will be dangerous and useless admittedly handle, tail gas discharges through discharge unit at last.
2. The solid waste incinerator tail gas treatment process according to claim 1, characterized in that said denitration unit is an SNCR denitration device (1).
3. The tail gas treatment process of the solid waste incinerator according to claim 1, wherein the primary dedusting and deacidification unit comprises an SDA deacidification tower (2), a flue gas distributor (3) is arranged at the top of the SDA deacidification tower (2), a rotary atomizer (12) is arranged at the top in the SDA deacidification tower (2), and a fly ash conveying and storing system (4) is connected to an ash hopper of the SDA deacidification tower (2).
4. The tail gas treatment process of the solid waste incinerator according to claim 3, wherein the primary dedusting and deacidification unit further comprises a first bag-type dust remover (5), the gas outlet of the SDA deacidification tower (2) is communicated with the inlet of the first bag-type dust remover (5), and the ash hopper of the first bag-type dust remover (5) is also connected with the fly ash conveying and storing system (4).
5. The tail gas treatment process of the solid waste incinerator according to claim 3, wherein the primary dedusting and deacidification unit further comprises an electric dust collector (6), the electric dust collector (6) is arranged in an inlet flue of the SDA deacidification tower (2), and an ash hopper of the electric dust collector is also connected with the fly ash conveying and storing system (4).
6. The tail gas treatment process of the solid waste incinerator according to claim 1, wherein the hazardous waste adsorption unit is an activated carbon injection system (7), and an activated carbon nozzle of the activated carbon injection system (7) is connected into a flue between the primary dedusting and deacidification unit and the secondary dedusting unit.
7. The solid waste incinerator tail gas treatment process according to claim 1, characterized in that the secondary dust removal unit comprises a second bag-type dust remover (8), and an ash bucket of the second bag-type dust remover (8) is connected with a dangerous solid waste conveying and storing system (9).
8. The solid waste incinerator tail gas treatment process according to claim 1, characterized in that said emission unit comprises a chimney (10), and an induced draft fan (11) is arranged in an inlet flue of said chimney (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650421.5A CN114471105A (en) | 2021-12-30 | 2021-12-30 | Solid waste incinerator tail gas treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111650421.5A CN114471105A (en) | 2021-12-30 | 2021-12-30 | Solid waste incinerator tail gas treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114471105A true CN114471105A (en) | 2022-05-13 |
Family
ID=81507888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111650421.5A Pending CN114471105A (en) | 2021-12-30 | 2021-12-30 | Solid waste incinerator tail gas treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114471105A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116531922A (en) * | 2023-05-31 | 2023-08-04 | 无锡雪浪环境科技股份有限公司 | System and method for purifying smoke generated by incineration of general industrial waste |
| TWI885422B (en) * | 2023-07-20 | 2025-06-01 | 信鼎技術服務股份有限公司 | Acid removal system using dry high-efficiency slaked lime and water spray cooling device in an incineration plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111006221A (en) * | 2019-12-02 | 2020-04-14 | 中节能清洁技术发展有限公司 | System and method for hazardous waste incineration |
| CN210814645U (en) * | 2019-10-17 | 2020-06-23 | 同兴环保科技股份有限公司 | A waste incineration flue gas ultra-low emission purification system |
| CN112121614A (en) * | 2020-09-23 | 2020-12-25 | 山鹰国际控股股份公司 | Stable ultralow emission device and method for solid waste incineration flue gas |
| CN112797429A (en) * | 2021-01-04 | 2021-05-14 | 冯承湖 | Double-dry deacidification method and system for hazardous waste incineration flue gas |
-
2021
- 2021-12-30 CN CN202111650421.5A patent/CN114471105A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210814645U (en) * | 2019-10-17 | 2020-06-23 | 同兴环保科技股份有限公司 | A waste incineration flue gas ultra-low emission purification system |
| CN111006221A (en) * | 2019-12-02 | 2020-04-14 | 中节能清洁技术发展有限公司 | System and method for hazardous waste incineration |
| CN112121614A (en) * | 2020-09-23 | 2020-12-25 | 山鹰国际控股股份公司 | Stable ultralow emission device and method for solid waste incineration flue gas |
| CN112797429A (en) * | 2021-01-04 | 2021-05-14 | 冯承湖 | Double-dry deacidification method and system for hazardous waste incineration flue gas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116531922A (en) * | 2023-05-31 | 2023-08-04 | 无锡雪浪环境科技股份有限公司 | System and method for purifying smoke generated by incineration of general industrial waste |
| TWI885422B (en) * | 2023-07-20 | 2025-06-01 | 信鼎技術服務股份有限公司 | Acid removal system using dry high-efficiency slaked lime and water spray cooling device in an incineration plant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102120130B (en) | Complete set of device and method for treating tail gas from sludge incineration through semidry method | |
| CN101648099B (en) | Purifying treatment device and purifying treatment method for flue gas multicomponent pollutant generated by incinerating refuse | |
| WO2021114084A1 (en) | Energy-saving ultralow flue gas purification system for waste incineration | |
| CN102114386B (en) | Desulfurization and demercuration method for flue gas | |
| CN112121614A (en) | Stable ultralow emission device and method for solid waste incineration flue gas | |
| CN202185253U (en) | Waste incineration flue gas purification system | |
| CN101822942B (en) | Wet purification method for dioxin and heavy metals in solid waste incineration gas | |
| CN105396421A (en) | Comprehensive adsorption and desulphurization dedusting purification method of baking flue gas | |
| CN203886406U (en) | Tail gas purification device of circulating fluid bed garbage incinerator | |
| CN209147106U (en) | A coal-fired unit coupled household waste incineration power generation system | |
| CN204320062U (en) | A kind of high effective flue gas cleaning system | |
| CN201899980U (en) | Complete device for treating sludge incineration tail gas in semidry method | |
| CN205832964U (en) | A kind of semi-dry desulfurization and denitrification system based on biomass ash | |
| WO2018192564A1 (en) | Flue gas purification system for domestic waste pyrolysis incinerator | |
| CN112426863A (en) | A dry-process double-bag flue gas purification integrated device for co-processing multiple pollutants | |
| CN114471105A (en) | Solid waste incinerator tail gas treatment process | |
| CN203635060U (en) | Tail gas purification system in circulating treatment manner | |
| CN203635061U (en) | Tail gas purification device | |
| CN205102149U (en) | Multiple gas cleaning is demercuration device in coordination | |
| CN100402927C (en) | An integrated device for circulating fluidized bed boiler incineration of garbage and purification of tail gas | |
| CN106076106A (en) | A kind of semi-dry desulfurization and denitrification system and method based on biomass ash | |
| CN116262198A (en) | Two-stage dry desulfurization deacidification dust removal process for waste incineration flue gas | |
| CN106178877A (en) | A coke oven flue exhaust gas purification waste heat recovery equipment and process | |
| CN110052155A (en) | A kind of Hg, SO3The system with low-low temperature ESP of cooperation-removal | |
| CN105222143A (en) | Mercury removal device and method are worked in coordination with in one kind of multiple gas cleanings |
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 |
Application publication date: 20220513 |
|
| RJ01 | Rejection of invention patent application after publication |