CN106215601A - A kind of flue gas demercuration desulfurization dust-removal system and technique - Google Patents

A kind of flue gas demercuration desulfurization dust-removal system and technique Download PDF

Info

Publication number
CN106215601A
CN106215601A CN201610826767.9A CN201610826767A CN106215601A CN 106215601 A CN106215601 A CN 106215601A CN 201610826767 A CN201610826767 A CN 201610826767A CN 106215601 A CN106215601 A CN 106215601A
Authority
CN
China
Prior art keywords
flue gas
demercuration
removal system
dust
adsorbent
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
Application number
CN201610826767.9A
Other languages
Chinese (zh)
Inventor
李德波
许凯
车得福
冯永新
吕强
王长安
钟俊
朱信
刘璇
周杰联
殷立宝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Jiaotong University
Electric Power Research Institute of Guangdong Power Grid Co Ltd
Original Assignee
Xian Jiaotong University
Electric Power Research Institute of Guangdong Power Grid Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xian Jiaotong University, Electric Power Research Institute of Guangdong Power Grid Co Ltd filed Critical Xian Jiaotong University
Priority to CN201610826767.9A priority Critical patent/CN106215601A/en
Publication of CN106215601A publication Critical patent/CN106215601A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D50/00Combinations of methods or devices for separating particles from gases or vapours
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/62Carbon oxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/80Semi-solid phase processes, i.e. by using slurries
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/50Carbon oxides
    • B01D2257/504Carbon dioxide
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Landscapes

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

Abstract

The embodiment of the invention discloses a kind of flue gas demercuration desulfurization dust-removal system and technique, control to set up a conversion valve and sack cleaner on device at traditional flue gas pollutant, and can be according to oxygen-enriched combusting or air burning condition switch transition valve, change flue gas flow channel, degree of depth demercuration can be carried out by placing the adsorbent prepared by the flying dust of traditional flue gas pollutant control device in sack cleaner under the conditions of oxygen-enriched combusting, solve activated carbon degree of depth demercuration cost intensive, the rising of cleaner unit load and the problem of flying dust Quality Down.The method comprise the steps that be sequentially connected in series electrostatic precipitator, wet desulphurization device, smoke re-heater, conversion valve, and sack cleaner, CO2Collection device, sedimentation tank, mercurous sorbent collection device and adsorbent prepare subsystem.

Description

A kind of flue gas demercuration desulfurization dust-removal system and technique
Technical field
The present invention relates to the emission control field of coal-fired flue-gas pollutant, particularly relate to a kind of flue gas demercuration desulfurization and dedusting system System and technique.
Background technology
The concentration range of Mercury In Coal Combustion Flue Gas is usually 1-20 μ g/m3.Although this concentration is the highest, it is contemplated that coal-fired The enormous quantity of boiler and scale, coal combustion is still the artificial hydrargyrum source of maximum.After hydrargyrum enters human body, liver and kidney can be caused Infringement even exhaustion.It addition, hydrargyrum or a kind of neurotoxin, its accumulation in cerebral tissue can cause the motion of human body to hinder Hinder and aphasis.In order to reduce artificial mercury pollution as far as possible, the up-to-date " fossil-fuel power plant atmospheric pollutant emission standard that China promulgates (GB13223-2011) " requiring that on January 1st, 2015 starts, coal-burning boiler mercury control is at 30 below μ g/m3.At present, China Thermal power plant's most popular demercuration technology is to utilize existing pollutant catabolic gene equipment demercuration.In SCR flue gas denitrification equipment, will The oxidation state hydrargyrum that elemental mercury oxidation is easily removing of difficult removing;In cleaner, particle mercury is removed;Set in wet desulphurization In Bei, by oxidation state mercury removal.Generally, after these equipment, the hydrargyrum concentration in flue gas has substantially conformed to row Put requirement.But, for oxygen-enriched combustion boiler, owing to using flue gas recirculation, the concentration of mercury in flue gas is burnt than conventional air In height.Additionally, the hydrargyrum in oxygen-enriched combusting flue gas is easy and the CO of aluminum2Collection device generates amalgam, to CO2Collection device causes Corrosion.Therefore, the flue gas that oxygen-enriched combusting is produced, utilize existing pollutant catabolic gene equipment demercuration cannot meet demercuration and want Ask, need to carry out degree of depth demercuration.
Active carbon adsorption technology is the degree of depth demercuration technology of the most ripe and existing commercial Application, but this technology is deposited In some deficiency following: adsorbent high cost;The activated carbon sprayed into can cause the rising of cleaner load;Cause flying dust matter The reduction of amount, affects the recycling of flying dust.
Summary of the invention
Embodiments provide a kind of flue gas demercuration desulfurization dust-removal system and technique, in traditional flue gas pollutant control A conversion valve and sack cleaner is set up, it is possible to according to oxygen-enriched combusting or air burning condition switch transition on device processed Valve, changes flue gas flow channel, can be by placing in sack cleaner by traditional smoke pollution under the conditions of oxygen-enriched combusting The adsorbent that the flying dust of thing control device prepares carries out degree of depth demercuration, solves activated carbon degree of depth demercuration cost intensive, dedusting Device load raises and the problem of flying dust Quality Down.
A kind of flue gas demercuration desulfurization dust-removal system provided in the embodiment of the present invention, removes including the electrostatic being sequentially connected in series Dirt device, wet desulphurization device, smoke re-heater, conversion valve, and sack cleaner, CO2Collection device, sedimentation tank, mercurous Sorbent collection device and adsorbent prepare subsystem;
Described sack cleaner entrance is connected with described conversion valve;
Described CO2Collection device, described mercurous sorbent collection device are connected with the outlet of described sack cleaner respectively;
Described sedimentation tank is connected with the outlet of described wet desulphurization device;
The outlet of entrance and described electrostatic precipitator that described adsorbent prepares subsystem is connected, described adsorbent preparation The outlet of system is connected with the entrance of described sack cleaner.
Alternatively,
Described flue gas demercuration desulfurization dust-removal system also includes the chimney being connected to the outlet of described conversion valve.
Alternatively,
Described adsorbent prepares ash collecting device that subsystem includes being sequentially connected in series, flotation device, Adsorbent modification Device, valve and be connected to described flotation device outlet storage ash silo;
The entrance of described ash collecting device is connected with the outlet of described electrostatic precipitator;
The outlet of described valve is connected with the entrance of described sack cleaner.
A kind of any one described flue gas demercuration desulfurization mentioned based on the present embodiment that the embodiment of the present invention provides removes The flue gas demercuration desulfurization dust-removing technique of dirt system, including:
Described flue gas demercuration desulfurization dust-removal system carries out electrostatic precipitation and wet desulphurization demercuration successively to flue gas;
If under the conditions of oxygen-enriched combusting, the flying dust carbon residue that the most described flue gas demercuration desulfurization dust-removal system produces with electrostatic precipitation Adsorbent is prepared for raw material;
Described flue gas demercuration desulfurization dust-removal system passes through the described adsorbent of preparation to through electrostatic precipitation and wet desulphurization The described flue gas of demercuration carries out degree of depth demercuration.
Alternatively,
After described flue gas demercuration desulfurization dust-removal system carries out electrostatic precipitation and wet desulphurization demercuration successively to flue gas also Including: if under the conditions of air burning, the most described flue gas demercuration desulfurization dust-removal system will take off through electrostatic precipitation and wet desulphurization The flue gas of hydrargyrum enters air by described chimney.
Alternatively,
Described flue gas demercuration desulfurization dust-removal system flue gas is carried out electrostatic precipitation and wet desulphurization demercuration successively particularly as follows:
Described flue gas demercuration desulfurization dust-removal system goes out the dust granules in flue gas and particle mercury by electrostatic;
Described flue gas demercuration desulfurization dust-removal system is by spraying desulfurization slurry by the sulfur in flue gas and oxidation soluble in water State hydrargyrum changes into the sulfide of solid-state and the compound of hydrargyrum and the described sulfide of one-tenth solid-state and the compound of hydrargyrum is collected Then stabilizer is added;
Flue gas reheating after described flue gas demercuration desulfurization dust-removal system will be processed by spray desulfurization slurry makes flue gas temperature Degree improves to 80-100 DEG C.
Alternatively,
If under the conditions of oxygen-enriched combusting, the flying dust carbon residue that the most described flue gas demercuration desulfurization dust-removal system produces with electrostatic precipitation Prepare adsorbent for raw material particularly as follows:
If under the conditions of oxygen-enriched combusting, the flotation device of described flue gas demercuration desulfurization dust-removal system is from passing through ash collecting device The flying dust collected selects flying dust carbon residue, then residue flying dust is collected storage ash silo;
The Adsorbent modification device of described flue gas demercuration desulfurization dust-removal system carries out sorbent treatment to described flying dust carbon residue And be dried, it is then stored in sorbent collection device.
Alternatively,
Described flue gas demercuration desulfurization dust-removal system passes through the described adsorbent of preparation to through electrostatic precipitation and wet desulphurization The flue gas of demercuration carry out degree of depth demercuration particularly as follows:
The valve of described flue gas demercuration desulfurization dust-removal system is opened and is made described adsorbent enter sack cleaner and adsorb warp Cross the Elemental Mercury in the flue gas of electrostatic precipitation and wet desulphurization demercuration and then pass through CO2Collection device is collected and is remained described flue gas, Collect described adsorbent by mercurous sorbent collection device simultaneously.
As can be seen from the above technical solutions, the embodiment of the present invention has the advantage that
1, control to set up a conversion valve and sack cleaner on device at traditional flue gas pollutant, it is possible to according to Oxygen-enriched combusting or air burning condition switch transition valve, change flue gas flow channel, can be by cloth under the conditions of oxygen-enriched combusting Bag dust collector is placed and is controlled adsorbent that the flying dust of device prepares to carry out degree of depth demercuration by traditional flue gas pollutant, solve Activated carbon degree of depth demercuration cost intensive, cleaner unit load raise and the problem of flying dust Quality Down.
2, it is stored in removing the flying dust beyond carbon residue in storage ash silo, has no effect on the recycling of flying dust, and the degree of depth takes off Hydrargyrum technique essentially eliminates entrance aluminum CO2The hydrargyrum of collection device, is effectively prevented generation and the CO of amalgam2Collection device Corrosion.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used To obtain other accompanying drawing according to these accompanying drawings.
The structure and connection diagram of a kind of flue gas demercuration desulfurization dust-removal system that Fig. 1 provides for the embodiment of the present invention;
The flow chart of one embodiment of a kind of flue gas demercuration desulfurization dust-removing technique that Fig. 2 position embodiment of the present invention provides;
The flow process of another embodiment of a kind of flue gas demercuration desulfurization dust-removing technique that Fig. 3 position embodiment of the present invention provides Figure.
Illustrate: 1, boiler;2, electrostatic precipitator;3, wet desulphurization device;4, smoke re-heater;5, conversion valve; 6, sack cleaner;7、CO2Collection device;8, chimney;9, ash collecting device;10, flotation device;11, storage ash silo;12, absorption Agent reforming apparatus;13, sorbent collection device;14, valve;15, sedimentation tank;16, mercurous sorbent collection device.
Detailed description of the invention
Embodiments provide a kind of flue gas demercuration desulfurization dust-removal system and technique, in traditional flue gas pollutant control A conversion valve and sack cleaner is set up, it is possible to according to oxygen-enriched combusting or air burning condition switch transition on device processed Valve, changes flue gas flow channel, can be by placing in sack cleaner by traditional smoke pollution under the conditions of oxygen-enriched combusting The adsorbent that the flying dust of thing control device prepares carries out degree of depth demercuration, solves activated carbon degree of depth demercuration cost intensive, dedusting Device load raises and the problem of flying dust Quality Down.
For making the goal of the invention of the present invention, feature, the advantage can be the most obvious and understandable, below in conjunction with the present invention Accompanying drawing in embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that disclosed below Embodiment be only a part of embodiment of the present invention, and not all embodiment.Based on the embodiment in the present invention, this area All other embodiments that those of ordinary skill is obtained under not making creative work premise, broadly fall into present invention protection Scope.
Refer to Fig. 1, an embodiment of a kind of flue gas demercuration desulfurization dust-removal system that the embodiment of the present invention provides, including The electrostatic precipitator that is sequentially connected in series, wet desulphurization device, smoke re-heater, conversion valve, and sack cleaner, CO2 Collection device, sedimentation tank, mercurous sorbent collection device and adsorbent prepare subsystem;
Sack cleaner entrance is connected with conversion valve;
CO2Collection device, mercurous sorbent collection device are connected with sack cleaner outlet respectively;
Sedimentation tank is connected with wet desulphurization device outlet;
The outlet of entrance and electrostatic precipitator that adsorbent prepares subsystem is connected, adsorbent prepare the outlet of subsystem with The entrance of sack cleaner connects.
Flue gas demercuration desulfurization dust-removal system also includes the chimney being connected to conversion valve outlet.
Adsorbent prepare ash collecting device that subsystem includes being sequentially connected in series, flotation device, Adsorbent modification device, Valve and be connected to flotation device outlet storage ash silo;
The entrance of ash collecting device is connected with the outlet of electrostatic precipitator;
The outlet of valve is connected with the entrance of sack cleaner.
Refer to Fig. 2, an embodiment of a kind of flue gas demercuration desulfurization dust-removing technique that the embodiment of the present invention provides, bag Include:
101, flue gas demercuration desulfurization dust-removal system carries out electrostatic precipitation and wet desulphurization demercuration successively to flue gas;
102, if under the conditions of oxygen-enriched combusting, then the flying dust carbon residue that flue gas demercuration desulfurization dust-removal system produces with electrostatic precipitation Adsorbent is prepared for raw material;
103, flue gas demercuration desulfurization dust-removal system passes through the adsorbent of preparation to through electrostatic precipitation and wet desulphurization demercuration Flue gas carry out degree of depth demercuration.
In the present embodiment, flue gas demercuration desulfurization dust-removal system first carries out electrostatic precipitation successively to flue gas and wet desulphurization takes off Hydrargyrum, if under the conditions of oxygen-enriched combusting, then the flying dust carbon residue that flue gas demercuration desulfurization dust-removal system produces with electrostatic precipitation is for raw material system Standby adsorbent, then flue gas demercuration desulfurization dust-removal system passes through the adsorbent of preparation to through electrostatic precipitation and wet desulphurization demercuration Flue gas carry out degree of depth demercuration.
Refer to Fig. 3, another embodiment of a kind of flue gas demercuration desulfurization dust-removing technique that the embodiment of the present invention provides, bag Include:
201, flue gas demercuration desulfurization dust-removal system goes out the dust granules in flue gas and particle mercury by electrostatic.
202, flue gas demercuration desulfurization dust-removal system is by spraying desulfurization slurry by the sulfur in flue gas and oxidation soluble in water State hydrargyrum changes into the sulfide of solid-state and the compound of hydrargyrum and the sulfide of solid-state and the compound of hydrargyrum will be become to collect then Add stabilizer;
It should be noted that stabilizer has multiple, such as NaHS solution or Fenton reagent, it is used for preventing oxidation state hydrargyrum from sending out Life restores reaction.
203, the flue gas reheating after flue gas demercuration desulfurization dust-removal system will be processed by spray desulfurization slurry makes flue gas temperature Degree improves to 80-100 DEG C.
204, if under the conditions of oxygen-enriched combusting, the flotation device of flue gas demercuration desulfurization dust-removal system is from passing through ash collecting device The flying dust collected selects flying dust carbon residue, then residue flying dust is collected storage ash silo;
It should be noted that it is in order to follow-up adsorbent preparation is prepared that residue flying dust is collected storage ash silo.
205, the Adsorbent modification device of flue gas demercuration desulfurization dust-removal system carries out sorbent treatment to flying dust carbon residue and goes forward side by side Row is dried, and is then stored in sorbent collection device;
Include carrying out soaking bromine, leaching chlorine and sulfur impregnated it should be noted that flying dust carbon residue carries out sorbent treatment, thus strengthen The adsorbent absorbability to Elemental Mercury.
206, the valve of flue gas demercuration desulfurization dust-removal system is opened and is made adsorbent enter sack cleaner and adsorb through quiet Then Elemental Mercury in the flue gas of electric precipitation and wet desulphurization demercuration passes through CO2Collection device collects residue flue gas, passes through simultaneously Mercurous sorbent collection device collects adsorbent.
207, if under the conditions of air burning, then flue gas demercuration desulfurization dust-removal system will be through electrostatic precipitation and wet desulphurization The flue gas of demercuration enters air by chimney.
In the present embodiment, originally, flue gas demercuration desulfurization dust-removal system by electrostatic go out the dust granules in flue gas and Grain state hydrargyrum, then flue gas demercuration desulfurization dust-removal system is by spraying desulfurization slurry by the sulfur in flue gas and oxidation state soluble in water Hydrargyrum changes into the sulfide of solid-state and the compound of hydrargyrum and the sulfide of solid-state and the compound of hydrargyrum will be become to collect and then add Adding stabilizer, the flue gas after flue gas demercuration desulfurization dust-removal system will be processed by spray desulfurization slurry afterwards reheats and makes flue gas temperature Degree improves to 80-100 DEG C, and the actual conditions of boiler combustion is depended in process afterwards, has two kinds of situations as follows, if in oxygen-enriched combustion Under the conditions of burning, it is residual that the flotation device of flue gas demercuration desulfurization dust-removal system selects flying dust from the flying dust collected by ash collecting device Charcoal, then collects storage ash silo by residue flying dust, and then the Adsorbent modification device of flue gas demercuration desulfurization dust-removal system is to flying dust Carbon residue carries out sorbent treatment and is dried, and is then stored in sorbent collection device, last flue gas demercuration desulfurization and dedusting The valve of system is opened and is made adsorbent enter sack cleaner and adsorb in the flue gas of electrostatic precipitation and wet desulphurization demercuration Elemental Mercury then pass through CO2Collection device collects residue flue gas, collects adsorbent by mercurous sorbent collection device simultaneously, And if under the conditions of air burning, then flue gas demercuration desulfurization dust-removal system is by through electrostatic precipitation and the flue gas of wet desulphurization demercuration Air is entered by chimney.
Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, and the system of foregoing description, The specific works process of device and unit, is referred to the corresponding process in preceding method embodiment, does not repeats them here.
The above, above example only in order to technical scheme to be described, is not intended to limit;Although with reference to front State embodiment the present invention has been described in detail, it will be understood by those within the art that: it still can be to front State the technical scheme described in each embodiment to modify, or wherein portion of techniques feature is carried out equivalent;And these Amendment or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (8)

1. a flue gas demercuration desulfurization dust-removal system, including the electrostatic precipitator being sequentially connected in series, wet desulphurization device, flue gas Reheater, conversion valve, it is characterised in that also include sack cleaner, CO2Collection device, sedimentation tank, mercurous sorbent collection Device and adsorbent prepare subsystem;
Described sack cleaner entrance is connected with described conversion valve;
Described CO2Collection device, described mercurous sorbent collection device are connected with the outlet of described sack cleaner respectively;
Described sedimentation tank is connected with the outlet of described wet desulphurization device;
The outlet of entrance and described electrostatic precipitator that described adsorbent prepares subsystem is connected, and described adsorbent prepares subsystem Outlet be connected with the entrance of described sack cleaner.
Flue gas demercuration desulfurization dust-removal system the most according to claim 1, it is characterised in that also include being connected to described conversion The chimney of valve export.
Flue gas demercuration desulfurization dust-removal system the most according to claim 1, it is characterised in that described adsorbent prepares subsystem Including the ash collecting device being sequentially connected in series, flotation device, Adsorbent modification device, valve and be connected to described flotation device The storage ash silo of outlet;
The entrance of described ash collecting device is connected with the outlet of described electrostatic precipitator;
The outlet of described valve is connected with the entrance of described sack cleaner.
4. a flue gas demercuration based on the flue gas demercuration desulfurization dust-removal system as described in any one in claims 1 to 3 takes off Sulfur dust collecting process, it is characterised in that including:
Described flue gas demercuration desulfurization dust-removal system carries out electrostatic precipitation and wet desulphurization demercuration successively to flue gas;
If under the conditions of oxygen-enriched combusting, the most described flue gas demercuration desulfurization dust-removal system is former with the flying dust carbon residue that electrostatic precipitation produces Adsorbent prepared by material;
Described flue gas demercuration desulfurization dust-removal system passes through the described adsorbent of preparation to through electrostatic precipitation and wet desulphurization demercuration Described flue gas carry out degree of depth demercuration.
Flue gas demercuration desulfurization dust-removing technique the most according to claim 3, it is characterised in that remove in described flue gas demercuration desulfurization Dirt system also includes after flue gas is carried out electrostatic precipitation and wet desulphurization demercuration successively: if under the conditions of air burning, then institute State flue gas demercuration desulfurization dust-removal system and the flue gas through electrostatic precipitation and wet desulphurization demercuration is entered air by described chimney.
Flue gas demercuration desulfurization dust-removing technique the most according to claim 4, it is characterised in that described flue gas demercuration desulfurization and dedusting System flue gas is carried out electrostatic precipitation and wet desulphurization demercuration successively particularly as follows:
Described flue gas demercuration desulfurization dust-removal system goes out the dust granules in flue gas and particle mercury by electrostatic;
Described flue gas demercuration desulfurization dust-removal system is by spraying desulfurization slurry by the sulfur in flue gas and oxidation state hydrargyrum soluble in water Change into the sulfide of solid-state and the compound of hydrargyrum and then the described sulfide of one-tenth solid-state and the compound of hydrargyrum are collected Add stabilizer;
Flue gas reheating after described flue gas demercuration desulfurization dust-removal system will be processed by spray desulfurization slurry makes flue-gas temperature carry Up to 80-100 DEG C.
Flue gas demercuration desulfurization dust-removing technique the most according to claim 4, it is characterised in that if under the conditions of oxygen-enriched combusting, The flying dust carbon residue that the most described flue gas demercuration desulfurization dust-removal system produces with electrostatic precipitation prepare adsorbent for raw material particularly as follows:
If under the conditions of oxygen-enriched combusting, the flotation device of described flue gas demercuration desulfurization dust-removal system is collected from by ash collecting device Flying dust in select flying dust carbon residue, then residue flying dust is collected storage ash silo;
The Adsorbent modification device of described flue gas demercuration desulfurization dust-removal system carries out sorbent treatment to described flying dust carbon residue and goes forward side by side Row is dried, and is then stored in sorbent collection device.
Flue gas demercuration desulfurization dust-removing technique the most according to claim 4, it is characterised in that described flue gas demercuration desulfurization and dedusting System by the described adsorbent of preparation the flue gas through electrostatic precipitation and wet desulphurization demercuration carried out degree of depth demercuration particularly as follows:
The valve of described flue gas demercuration desulfurization dust-removal system is opened and is made described adsorbent enter sack cleaner and adsorb through quiet Then Elemental Mercury in the flue gas of electric precipitation and wet desulphurization demercuration passes through CO2Collection device is collected and is remained described flue gas, simultaneously Described adsorbent is collected by mercurous sorbent collection device.
CN201610826767.9A 2016-09-14 2016-09-14 A kind of flue gas demercuration desulfurization dust-removal system and technique Pending CN106215601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610826767.9A CN106215601A (en) 2016-09-14 2016-09-14 A kind of flue gas demercuration desulfurization dust-removal system and technique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610826767.9A CN106215601A (en) 2016-09-14 2016-09-14 A kind of flue gas demercuration desulfurization dust-removal system and technique

Publications (1)

Publication Number Publication Date
CN106215601A true CN106215601A (en) 2016-12-14

Family

ID=58075632

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610826767.9A Pending CN106215601A (en) 2016-09-14 2016-09-14 A kind of flue gas demercuration desulfurization dust-removal system and technique

Country Status (1)

Country Link
CN (1) CN106215601A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3950096A4 (en) * 2019-04-01 2023-03-29 Mitsubishi Heavy Industries, Ltd. Device and method pertaining to gas purification treatment and/or combustion ash neutralization treatment

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101024161A (en) * 2006-02-20 2007-08-29 韩国电力公社 Absorbent for removing a little amount of harm contaminant from combustion smoke and preparing method
CN101066523A (en) * 2006-12-27 2007-11-07 吉林安洁环保有限公司 Semi-dry desulfurizing process in double feedback circular fluidized bed
CN101446416A (en) * 2007-11-27 2009-06-03 贵阳铝镁设计研究院 Thermal power plant boiler tail flue gas dust removal and desulfurization treatment process and device thereof
US20110076216A1 (en) * 2009-09-30 2011-03-31 Hitachi, Ltd. Carbon Dioxide Capture Power Generation System
CN102350214A (en) * 2011-06-29 2012-02-15 山东大学 Coal-fired power plant coal dust prepared activated coke flue gas comprehensive purification system and technology
CN202289865U (en) * 2011-10-11 2012-07-04 苏州科德技研有限公司 Dry type smoke treating system for sludge incineration
CN104353325A (en) * 2014-11-12 2015-02-18 上海锅炉厂有限公司 Device and method for removing mercury from boiler flue gas of power station

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101024161A (en) * 2006-02-20 2007-08-29 韩国电力公社 Absorbent for removing a little amount of harm contaminant from combustion smoke and preparing method
CN101066523A (en) * 2006-12-27 2007-11-07 吉林安洁环保有限公司 Semi-dry desulfurizing process in double feedback circular fluidized bed
CN101446416A (en) * 2007-11-27 2009-06-03 贵阳铝镁设计研究院 Thermal power plant boiler tail flue gas dust removal and desulfurization treatment process and device thereof
US20110076216A1 (en) * 2009-09-30 2011-03-31 Hitachi, Ltd. Carbon Dioxide Capture Power Generation System
CN102350214A (en) * 2011-06-29 2012-02-15 山东大学 Coal-fired power plant coal dust prepared activated coke flue gas comprehensive purification system and technology
CN202289865U (en) * 2011-10-11 2012-07-04 苏州科德技研有限公司 Dry type smoke treating system for sludge incineration
CN104353325A (en) * 2014-11-12 2015-02-18 上海锅炉厂有限公司 Device and method for removing mercury from boiler flue gas of power station

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
林宗寿: "《无机非金属材料工学》", 31 August 2014, 武汉理工大学出版社 *
王立刚等: "《燃煤汞污染及其控制》", 31 July 2008, 冶金工业出版社 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3950096A4 (en) * 2019-04-01 2023-03-29 Mitsubishi Heavy Industries, Ltd. Device and method pertaining to gas purification treatment and/or combustion ash neutralization treatment

Similar Documents

Publication Publication Date Title
CN103933838B (en) In coal, chlorine element circular utilizes the device and method realizing pollutant combined removal
CN100503013C (en) Method and system for combinedly removing SO2, NOx and Hg in coal smoke gas by using recombustion of biomass
CN102500183B (en) Flue gas purification system capable of simultaneously realizing high-efficiency dust removal and mercury removal
CN101918108A (en) System for treating discharge gas from coal-fired boiler and method of operating the same
CN105195008A (en) Process and equipment for flue gas roasting, adsorption desulfurization, dust removal and purification by adopting combination process
CN104740983A (en) Method and device for performing combined removal on boiler flue gas particulates and heavy metals
CN202185253U (en) Exhaust gas purifying system for waste incineration
CN106964243A (en) A kind of integrative coordinated removing sulfur trioxide device and its method of work suitable for sulphur coal
CN100363088C (en) Method for removing hydrargyrum from coal burning boiler flue gas by ozone oxidation
CN105642104A (en) Deep purification method and device of flue gas after wet-process desulfurization
CN202289797U (en) Dust removal and mercury removal flue gas purification system
CN110252068A (en) The desulfurizing and purifying method of blast furnace gas
CN203068543U (en) Flue gas dust removal purification system
CN103933813A (en) Combined dust removing and defogging device for smoke
CN203663677U (en) Smoke elimination, dust removal, deodorization and desulfurization equipment
CN204543944U (en) A kind ofly combine the device removed with heavy metal for boiler smoke particle
CN110052155A (en) A kind of Hg, SO3The system with low-low temperature ESP of cooperation-removal
CN103657408A (en) Device of removing arsenic and mercury in flue gas and method of removing arsenic and mercury
CN106039980A (en) High temperature flue gas mercury removal device and technology
CN203777877U (en) Electrostatic composite fume dedusting and demisting device
CN206366314U (en) A kind of high-temperature flue gas pollutant cooperative control system
CN106215601A (en) A kind of flue gas demercuration desulfurization dust-removal system and technique
CN107252628A (en) A kind of flue gas desulfurization denitration dust-removing system
CN207271044U (en) A kind of boiler exhaust gas denitration integrated device
JP2013202434A (en) Method for disposing of fluidized bed-system boiler ash and disposer

Legal Events

Date Code Title Description
C06 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: 20161214