CN113559691A - Ultralow discharge system of high-sulfur sludge incineration flue gas - Google Patents

Ultralow discharge system of high-sulfur sludge incineration flue gas Download PDF

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Publication number
CN113559691A
CN113559691A CN202110884447.XA CN202110884447A CN113559691A CN 113559691 A CN113559691 A CN 113559691A CN 202110884447 A CN202110884447 A CN 202110884447A CN 113559691 A CN113559691 A CN 113559691A
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desulfurizer
flue gas
bin
mixing
activated carbon
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蔡晶晶
徐钢
闫晶晶
姚淑勇
赵志成
刘正敏
金敏
吴瑞侠
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Zhejiang Feida Technology Development Co ltd
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Zhejiang Feida Technology Development Co ltd
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    • 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
    • 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
    • B01D53/06—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 moving adsorbents, e.g. rotating beds
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • 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
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • 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
    • B01D53/80—Semi-solid phase processes, i.e. by using slurries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/30—Alkali metal compounds
    • B01D2251/304—Alkali metal compounds of sodium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides
    • 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
    • B01D2258/00—Sources of waste gases
    • B01D2258/02—Other waste gases
    • B01D2258/0283—Flue gases
    • B01D2258/0291—Flue gases from waste incineration plants

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Treating Waste Gases (AREA)

Abstract

The invention provides a high-sulfur sludge incineration flue gas ultralow emission system which comprises a circulating semi-dry method desulfurization system, a cloth bag dust removal system and a wet method washing system which are sequentially arranged along a flue gas treatment direction, and further comprises an active carbon injection device, wherein the circulating semi-dry method desulfurization system comprises a cooling and humidifying tower and a desulfurizer mixing and injection device, a flue gas outlet of the cooling and humidifying tower is connected with a dust remover of the cloth bag dust removal system through a mixing flue, an ash discharge outlet of the dust remover is connected with the desulfurizer mixing and injection device, outlets of the desulfurizer mixing and injection device and the active carbon injection device are respectively connected into the mixing flue through injection ports to provide desulfurizer and active carbon, and a flue gas outlet of the dust remover is connected with the wet method washing tower of the wet method washing system. The system effectively reduces material consumption and operation cost on the premise of ensuring the emission index, and improves the feasibility of comprehensive popularization of the industrial waste gas ultra-low emission concept in the solid waste field.

Description

Ultralow discharge system of high-sulfur sludge incineration flue gas
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of solid waste incineration flue gas treatment, in particular to a high-sulfur sludge incineration flue gas ultralow emission system.
[ background of the invention ]
Sludge incineration is a common method of sludge disposal that destroys all organic matter and kills pathogens, minimizing sludge volume. However, a large amount of toxic and harmful exhaust gas is generated in the sludge incineration process to be treated, and one of the most important harmful components is SO2. The sulfur content in the municipal sludge is generally below 1 percent, and most of sulfur is SO when the sludge is incinerated2Is discharged in the form of (1).
SO discharged by sludge incineration2The removal is usually carried out by adopting a dry spraying and wet washing process. However, some sludge has high sulfur content and is converted into high-concentration SO after incineration2The concentration of sulfur dioxide in the limit working condition even reaches 20000mg/Nm3. With the promotion of relevant emission standards of air pollution control and the attention of government departments to solid waste disposal, the flue gas emission indexes determined when a lot of solid waste incineration plants evaluate the environment of a plant area in a project stage execute the standard for controlling the incineration pollution of domestic waste (GB18485-2014), and individual areas even require the strict requirements of Europe and EuropeThe EU2000 standard EU2000/76/EC or GB13223-2011 emission standard is treated by the existing technical route and obviously cannot meet the requirements, and a high-sulfur sludge incineration flue gas ultra-low emission system is provided.
[ summary of the invention ]
The invention aims to solve the problems in the prior art and provides a high-sulfur sludge incineration flue gas ultralow emission system which can realize high-efficiency desulfurization of flue gas and meet the emission requirement of high-sulfur sludge incineration flue gas.
In order to achieve the purpose, the invention provides a high-sulfur sludge incineration flue gas ultralow emission system which comprises a circulating semi-dry method desulfurization system, a cloth bag dust removal system and a wet method washing system which are sequentially arranged along a flue gas treatment direction, and further comprises an active carbon injection device, wherein the circulating semi-dry method desulfurization system comprises a cooling humidifying tower and a desulfurizer mixing and injection device, a flue gas outlet of the cooling humidifying tower is connected with a dust remover of the cloth bag dust removal system through a mixing flue, an ash discharge outlet of the dust remover is connected with the desulfurizer mixing and injection device, outlets of the desulfurizer mixing and injection device and the active carbon injection device are respectively connected into the mixing flue through injection ports to provide desulfurizer and active carbon, and a flue gas outlet of the dust remover is connected with the wet method washing tower of the wet method washing system.
Preferably, a plurality of cooling spray guns are arranged in the cooling and humidifying tower and are used for cooling and humidifying the flue gas.
Preferably, the wet scrubbing system is further provided with a wastewater recycling device, the wastewater recycling device comprises a wastewater tank and a wastewater pump, wastewater of the wet scrubbing tower is discharged into the wastewater tank, an outlet of the wastewater tank is connected with an inlet of the wastewater pump, and an outlet of the wastewater pump is connected with a process jellyfish pipe at an inlet of a spray gun of the cooling and humidifying tower.
Preferably, the desulfurizer mixing and spraying device comprises a bin pump, a slaked lime bin, a mixing bin, a slaked lime metering and feeding device, a desulfurizer weighing and feeding device, a desulfurizer sprayer and a desulfurizer spraying fan, wherein the top of the mixing bin is provided with a slaked lime inlet and a slaked lime inlet, an ash discharge outlet of the dust remover is connected to the slaked lime inlet of the mixing bin through the bin pump, and the slaked lime bin is connected to the slaked lime inlet of the mixing bin through the slaked lime metering and feeding device; the discharging port of the mixing bunker is connected with the inlet of the desulfurizer weighing and feeding device, the outlet of the desulfurizer weighing and feeding device is connected with a desulfurizer ejector, the air source interface of the desulfurizer ejector is connected with the outlet of a desulfurizer jetting fan, and the discharging port is connected with a desulfurizer jetting port on the mixing flue.
Preferably, an air flow distribution device is arranged above the inner wall of the ash bucket at the bottom of the mixing bin, the air flow distribution device is annularly arranged in an inner ring and an outer ring, and the air inlet end of the air flow distribution device is connected with a compressed air pipeline.
Preferably, pneumatic isolation valves are arranged on the slaked lime inlet and the lime inlet at the top of the mixing bin.
Preferably, a bag type dust collector is arranged at the top of the mixing bin and used for preventing the dust from overflowing.
Preferably, two bin pumps are arranged below the bag-type dust collector, a discharge pipeline of each bin pump is provided with a pneumatic three-way valve and is divided into two paths, one path is connected with a fly ash bin feeding port, the other path is connected with a fly ash inlet of a mixing bin, and conveying pipelines are switched through the pneumatic three-way valves.
Preferably, the activated carbon injection device comprises an activated carbon bin, an activated carbon weighing and feeding device, an activated carbon injector and an activated carbon injection fan, wherein a discharge port of the activated carbon bin is connected with an inlet of the activated carbon weighing and feeding device; the outlet of the activated carbon weighing and feeding device is connected with the feed inlet of the activated carbon ejector; and an air source interface of the activated carbon injector is connected with an outlet of the activated carbon injection fan, and a discharge hole is connected with an activated carbon injection hole on the mixing flue.
The invention has the beneficial effects that:
1. solves the problem of high-sulfur sludge incineration flue gas SO2The difficult problem of emission reaching the standard is difficult, and the blank of the high-sulfur sludge incineration flue gas treatment process is made up.
2. The flue gas treatment process disclosed by the invention is combined with flue gas denitration, and the flue gas emission can meet the EU2000 standard EU2000/76/EC or the ultra-low emission standard GB13223-2011 standard.
3. And a part of fly ash collected by the dust remover is recycled, so that the consumption of slaked lime is reduced, and the operation cost is saved.
4. The wet desulphurization waste water is used as cooling water and sprayed into a cooling and humidifying tower to replace part of process water, so that the waste water discharge is reduced.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of an ultralow emission system of high-sulfur sludge incineration flue gas of the invention;
FIG. 2 is a schematic structural view of the desulfurizing agent mixing and spraying apparatus of the present invention.
The reference numbers in the figures denote: 1. the system comprises a cooling and humidifying tower, 101 a cooling spray gun, 2 a dust remover, 3 a wet scrubbing tower, 301 a wastewater box, 302 a wastewater pump, 4 an induced draft fan, 5 a chimney, 6 a desulfurizer mixing and spraying device, 601 a bin pump, 602 a slaked lime bin, 603 a mixing bin, 604 a slaked lime metering and feeding device, 605 a desulfurizer weighing and feeding device, 606 a desulfurizer sprayer, 607 a desulfurizer spraying fan and 7 an active carbon spraying device.
[ detailed description ] embodiments
Referring to fig. 1 to 2, the ultralow emission system of high-sulfur sludge incineration flue gas of the present invention comprises a circulating semi-dry desulfurization system, a bag-type dust removal system, a wet scrubbing system, an induced draft fan 4, a chimney 5 and an activated carbon injection device 7, which are sequentially arranged along a flue gas treatment direction, wherein the circulating semi-dry desulfurization system comprises a cooling and humidifying tower 1 and a desulfurizer mixing and injection device 6, a flue gas outlet of the cooling and humidifying tower 1 is connected with a dust collector 2 (bag-type dust collector) of the bag-type dust removal system through a mixing flue, an ash discharge outlet of the dust collector 2 is connected with the desulfurizer mixing and injection device 6, outlets of the desulfurizer mixing and injection device 6 and the activated carbon injection device 7 are respectively connected into the mixing flue through injection ports to provide a desulfurizer and activated carbon, a flue gas outlet of the dust collector 2 is connected with a wet scrubbing tower 3 of the wet scrubbing system, and a flue gas outlet of the wet scrubbing tower 3 is connected into a chimney 5 through an induced draft fan 4.
Further, a plurality of cooling spray guns 101, preferably two-fluid cooling spray guns, are arranged in the cooling and humidifying tower 1 and are used for cooling and humidifying the flue gas.
Further, the wet scrubbing system is also provided with a wastewater recycling device, the wastewater recycling device comprises a wastewater tank 301 and a wastewater pump 302, wastewater of the wet scrubbing tower 3 is discharged into the wastewater tank 301, an outlet of the wastewater tank 301 is connected with an inlet of the wastewater pump 302, and an outlet of the wastewater pump 302 is connected with a process water main pipe of a spray gun inlet of the cooling and humidifying tower 1. Wherein, wet scrubber tower 3 includes the desulfurizing tower body, sets up in this internal multilayer of desulfurizing tower and sprays the layer, sets up the liquid collecting tray in desulfurizing tower body bottom, the exit linkage waste water case 301 of liquid collecting tray.
Further, the desulfurizer mixing and spraying device 6 comprises a bin pump 601, a slaked lime bin 602, a mixing bin 603, a slaked lime metering and feeding device 604, a desulfurizer weighing and feeding device 605, a desulfurizer sprayer 606 and a desulfurizer spraying fan 607, the top of the mixing bin 603 is provided with a slaked lime inlet and an ash inlet, an ash discharge outlet of the dust remover 2 is connected to the ash inlet of the mixing bin 603 through the bin pump 601, the slaked lime bin 602 is located above the mixing bin 603 and used for storing slaked lime, and the slaked lime metering device 604 is arranged below the slaked lime bin 602; the slaked lime bin 602 is connected to a slaked lime inlet of the mixing bin 603 through a slaked lime metering and feeding device 604, and is used for supplementing fresh lime into the mixing bin 603; the discharge port of the mixing bunker 603 is connected with the inlet of a desulfurizer weighing and feeding device 605, the outlet of the desulfurizer weighing and feeding device 605 is connected with a desulfurizer ejector 606, the air source interface of the desulfurizer ejector 606 is connected with the outlet of a desulfurizer jetting fan 607, and the discharge port is connected with a desulfurizer jetting port on the mixing flue. Wherein the desulfurizer injection blower 607 can be a roots blower.
Further, an air flow distribution device is arranged above the inner wall of the ash bucket at the bottom of the mixing bin 603, the air flow distribution device is annularly arranged in an inner ring and an outer ring, and an air inlet end of the air flow distribution device is connected with a compressed air pipeline.
Further, pneumatic isolation valves are arranged on a slaked lime inlet and a slaked lime inlet at the top of the mixing bin 603.
Further, a bag type dust collector is arranged at the top of the mixing bin 603 and used for preventing the dust from overflowing.
Further, two bin pumps 601 are arranged below the bag-type dust collector 2 and used for conveying the fly ash of the dust collector 3, a discharge pipeline of the bin pumps 601 is provided with a pneumatic three-way valve and is divided into two paths, one path is connected with a fly ash bin feeding port, the other path is connected with an ash inlet port of the mixing bin 603, and the conveying pipelines are switched through the pneumatic three-way valve.
Further, the activated carbon injection device 7 comprises an activated carbon bin, an activated carbon weighing and feeding device, an activated carbon injector and an activated carbon injection fan, wherein a discharge port of the activated carbon bin is connected with an inlet of the activated carbon weighing and feeding device; the outlet of the activated carbon weighing and feeding device is connected with the feed inlet of the activated carbon ejector; and an air source interface of the activated carbon injector is connected with an outlet of the activated carbon injection fan, and a discharge hole is connected with an activated carbon injection hole on the mixing flue. Wherein, the activated carbon injection fan can adopt a Roots fan.
The process flow of the invention is as follows: burning flue gas → cooling and humidifying → desulfurizer jetting → active carbon jetting → cloth bag dust removal → wet washing → chimney, relating to the device mainly comprising: the device comprises a cooling and humidifying tower 1, a dust remover 2, a wet type washing tower 3, a draught fan 4, a chimney 5, a desulfurizer mixing and spraying device 6 and an active carbon spraying device 7.
The method comprises the following specific steps: sludge produces a quantitative flue gas after burning in the incinerator, gets into cooling humidifying tower 1 behind the economizer, set up a plurality of two fluid cooling spray guns in the cooling humidifying tower 1 for flue gas cooling and humidification, flue gas get into dust remover 2 through the flue after cooling humidifying tower 1 cooling humidification, spout into desulfurizer and active carbon on the mixed flue between cooling humidifying tower 1 and dust remover 2 for SO in the preliminary desorption flue gas2And HCl and other acidic components, heavy metals and dioxin in the adsorbed flue gas, and the desulfurizer is a mixture of part of fly ash and fresh lime removed by the dust remover 2. The flue gas enters a wet type washing tower 3 after being dedusted by the deduster 2, SO that SO in the flue gas is further removed2And HCl and the like, and finally introducing the desulfurized waste gas into a chimney 5 through an induced draft fan 4 and discharging. Wherein, the wet scrubbing tower 3 takes NaOH as an absorbent, and the generated desulfurization wastewater is collected and recycled as cooling water for cooling the humidifying tower 1.
The invention discloses an ultralow emission system of high-sulfur sludge incineration flue gas, which is a device suitable for purifying the sludge incineration flue gas with high sulfur content and ultralow emission, effectively reduces material consumption and operation cost on the premise of ensuring emission indexes, and improves the feasibility of comprehensive popularization of the ultralow emission concept of industrial waste gas in the solid waste field. The specific process technology details and the performance parameters can be verified and optimized in the actual engineering test process to complete the design scheme.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.

Claims (9)

1. The utility model provides a high-sulfur sludge incineration flue gas minimum discharge system which characterized in that: include circulation semidry desulfurization system, sack dust pelletizing system and the wet scrubbing system that sets gradually along the flue gas treatment direction, still include active carbon injection apparatus (7), circulation semidry desulfurization system is including cooling humidifying tower (1), desulfurizer mix and injection apparatus (6), the exhanst gas outlet of cooling humidifying tower (1) passes through dust remover (2) that mix the flue connection sack dust pelletizing system, the ash discharge delivery outlet of dust remover (2) is connected desulfurizer and is mixed and injection apparatus (6), the export of desulfurizer mix and injection apparatus (6), active carbon injection apparatus (7) is respectively through the jet orifice and is inserted mixed flue for provide desulfurizer and active carbon, wet scrubbing tower (3) of wet scrubbing system are connected to the exhanst gas outlet of dust remover (2).
2. The high-sulfur sludge incineration flue gas ultra-low emission system of claim 1, wherein: a plurality of cooling spray guns (101) are arranged in the cooling and humidifying tower (1) and are used for cooling and humidifying flue gas.
3. The high-sulfur sludge incineration flue gas ultra-low emission system of claim 1, wherein: the wet scrubbing system still is equipped with waste water retrieval and utilization device, waste water retrieval and utilization device includes waste water tank (301), waste water pump (302), waste water tank (301) are discharged into to the waste water of wet scrubber tower (3), waste water tank (301) export links to each other with the entry of waste water pump (302), the export of waste water pump (302) links to each other with the spray gun entry process jellyfish pipe of cooling humidifying tower (1).
4. The high-sulfur sludge incineration flue gas ultra-low emission system of claim 1, wherein: the desulfurizer mixing and spraying device (6) comprises a bin pump (601), a slaked lime bin (602), a mixing bin (603), a slaked lime metering and feeding device (604), a desulfurizer weighing and feeding device (605), a desulfurizer sprayer (606) and a desulfurizer spraying fan (607), wherein the top of the mixing bin (603) is provided with a slaked lime inlet and an ash inlet, an ash discharge outlet of the dust remover (2) is connected to the ash inlet of the mixing bin (603) through the bin pump (601), and the slaked lime bin (602) is connected to the slaked lime inlet of the mixing bin (603) through the slaked lime metering and feeding device (604); the discharge port of the mixing bunker (603) is connected with an inlet of a desulfurizer weighing and feeding device (605), an outlet of the desulfurizer weighing and feeding device (605) is connected with a desulfurizer ejector (606), an air source interface of the desulfurizer ejector (606) is connected with an outlet of a desulfurizer jetting fan (607), and the discharge port is connected with a desulfurizer jet orifice on the mixing flue.
5. The high-sulfur sludge incineration flue gas ultra-low emission system of claim 4, wherein: an air flow distribution device is arranged above the inner wall of an ash bucket at the bottom of the mixing bin (603), the air flow distribution device is annularly arranged in an inner ring and an outer ring, and the air inlet end of the air flow distribution device is connected with a compressed air pipeline.
6. The high-sulfur sludge incineration flue gas ultra-low emission system of claim 4, wherein: and pneumatic isolating valves are arranged on the slaked lime inlet and the lime inlet at the top of the mixing bin (603).
7. The high-sulfur sludge incineration flue gas ultra-low emission system of claim 4, wherein: and a bag type dust collector is arranged at the top of the mixing bin (603) and is used for preventing the dust from overflowing.
8. The high-sulfur sludge incineration flue gas ultra-low emission system of claim 4, wherein: two bin pumps (601) are arranged below the bag-type dust collector (2), a discharge pipeline of the bin pumps (601) is provided with a pneumatic three-way valve and is divided into two paths, one path of discharge pipeline is connected with a fly ash bin feeding port, the other path of discharge pipeline is connected with an ash inlet port of a mixing bin (603), and a conveying pipeline is switched through the pneumatic three-way valve.
9. The high-sulfur sludge incineration flue gas ultra-low emission system of claim 1, wherein: the activated carbon injection device (7) comprises an activated carbon bin, an activated carbon weighing and feeding device, an activated carbon injector and an activated carbon injection fan, wherein a discharge hole of the activated carbon bin is connected with an inlet of the activated carbon weighing and feeding device; the outlet of the activated carbon weighing and feeding device is connected with the feed inlet of the activated carbon ejector; and an air source interface of the activated carbon injector is connected with an outlet of the activated carbon injection fan, and a discharge hole is connected with an activated carbon injection hole on the mixing flue.
CN202110884447.XA 2021-08-03 2021-08-03 Ultralow discharge system of high-sulfur sludge incineration flue gas Pending CN113559691A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115779648A (en) * 2022-11-07 2023-03-14 北京首创环境科技有限公司 Device and method for flue gas deacidification by waste incineration fly ash recycling through semidry method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115779648A (en) * 2022-11-07 2023-03-14 北京首创环境科技有限公司 Device and method for flue gas deacidification by waste incineration fly ash recycling through semidry method
CN115779648B (en) * 2022-11-07 2023-10-24 北京首创环境科技有限公司 Device and method for deacidifying flue gas by semi-dry method through recycling waste incineration fly ash

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