CN109954392A - A kind of flue-gas dust-removing and desulfurization nitrogen rejection facility with detection function - Google Patents

A kind of flue-gas dust-removing and desulfurization nitrogen rejection facility with detection function Download PDF

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Publication number
CN109954392A
CN109954392A CN201711334223.1A CN201711334223A CN109954392A CN 109954392 A CN109954392 A CN 109954392A CN 201711334223 A CN201711334223 A CN 201711334223A CN 109954392 A CN109954392 A CN 109954392A
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air inlet
detector
flue
gas chamber
sulfur dioxide
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雒晓瑜
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Xi'an Xingui System Information Technology Co Ltd
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Xi'an Xingui System Information Technology Co Ltd
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Priority to CN201711334223.1A priority Critical patent/CN109954392A/en
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    • 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
    • B01D53/60Simultaneously removing sulfur oxides and nitrogen 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
    • B01D53/76Gas phase processes, e.g. by using aerosols
    • 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
    • B01D53/77Liquid phase processes
    • B01D53/78Liquid phase processes with gas-liquid contact
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02Plant or installations having external electricity supply
    • B03C3/04Plant or installations having external electricity supply dry type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/102Carbon
    • 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

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

Abstract

Present invention relates particularly to a kind of flue-gas dust-removing and desulfurization nitrogen rejection facility with detection function, including the smoke inlet being sequentially communicated, electrostatic dust removal mechanism, first nitrogen oxides detector, first sulfur dioxide detector, uniform gas chamber, fluid reservoir, second nitrogen oxides detector and the second sulfur dioxide detector, uniform gas chamber is additionally provided with the second air inlet for being passed through oxygen, an agitating paddle is provided in uniform gas chamber, agitating paddle includes agitating shaft and agitator arm, agitating shaft is hollow design, upper end is connected to the air inlet of uniform gas chamber, cavity is set as at the center of agitator arm, and offer venthole, it is connected to the lower end of agitating shaft, the bottom of agitator arm is provided with the air inlet guide shell being connected to the second air inlet.The flue-gas dust-removing and desulfurization nitrogen rejection facility, desulfurization removing nitric effect is good, and structure is simple, at low cost, and can detect to nitrogen oxides in gas before and after treatment and sulfur dioxide.

Description

A kind of flue-gas dust-removing and desulfurization nitrogen rejection facility with detection function
Technical field
The invention belongs to environment protection fields, and in particular to a kind of flue-gas dust-removing and desulfurization nitrogen rejection facility with detection function.
Background technique
In recent years, becoming increasingly conspicuous with environmental problem, industry release exhaust gas caused by air pollution closed extensively Note.The desulfurization technology of current existing exploitation has hundreds of, wherein practical feasible technical solution only raw coal washing, fluidized bed In combustion technology, furnace spray absorbent/humidification activation sulfur removal technology, wet type lime/lime stone sulfur removal technology, seawater desulfurizing process, Simplified wet FGD technique, spray dry desulfurization technique, absorbent regeneration sulfur removal technology, flue spray absorbent sulfur removal technology, electricity More than 10 technology such as beamlet irradiation method.
At present in terms of administering sulfur-bearing, nitrogen-containing oxide flue gas, main method to be used is two methods of dry type or wet type. Most of desulfurization removing nitric equipment are continuous working method not intermittently, and require desulfurization de- in some special production processes Nitrogen equipment service intermittent will cause the waste of energy according to retrospective installation.This requires one kind can automatically detect flue gas Middle sulfur content, the desulfurization of nitrogen-containing oxide amount, denitrification equipment.It is determined according to whether sulfide, nitrogen oxides is contained in flue gas Whether desulfurization removing nitric equipment is started, to realize the service intermittent of desulfurization removing nitric equipment, to reach energy-efficient purpose.But at present General desulfurization removing nitric equipment is extremely difficult to this requirement in the market.
Chinese invention patent 201620180273.3 discloses a kind of flue-gas dust-removing and desulfurization denitrification system, including flue gas air intake, Electrostatic precipitator, valve, active carbon filtering device, check-valves, equipment of desulfuration and denitrogenation, ammonium sulfide filter device;System benefit With electrostatic precipitation method dedusting, while utilizing high-energy radiation chemical method pick-ups and deliveries;The system is specifically using anti- It answers in device and generates high-strength electron beam irradiation flue gas with electron accelerator, the excitation of the molecules such as vapor, oxygen is made to generate energetic free radical, These free radicals make the SO in flue gas2It is aoxidized quickly with NO, generates sulfuric acid and nitric acid, then react to form ammonium sulfate and nitre with ammonia Sour ammonium fertilizer realizes desulfurization and denitrogenation simultaneously.But structure is complicated for the flue-gas dust-removing and desulfurization denitrification system, and cannot be to processing before It is detected with nitrogen oxides in treated gas and sulfur dioxide.
Therefore, there is an urgent need to the systems of sulfide, nitrogen oxides in a kind of purification mixed gas at present.
Summary of the invention
It is poor and cannot be to gas before and after treatment in order to solve desulfurization removing nitric effect existing in the prior art The problem of middle nitrogen oxides and sulfur dioxide are detected, the present invention provides a kind of flue-gas dust-removing and desulfurizations with detection function Nitrogen rejection facility, desulfurization removing nitric effect is good, and structure is simple, at low cost, and can be to nitrogen oxidation in gas before and after treatment Object and sulfur dioxide are detected.The technical problem to be solved in the present invention is achieved through the following technical solutions:
A kind of flue-gas dust-removing and desulfurization nitrogen rejection facility with detection function, including smoke inlet and electrostatic dust removal mechanism, it is described quiet The air inlet of electric precipitation mechanism is connected to smoke inlet, further includes uniform gas chamber, fluid reservoir, the first nitrogen oxides detector, One sulfur dioxide detector, the second nitrogen oxides detector and the second sulfur dioxide detector;
The gas exhaust piping of the electrostatic dust removal mechanism is divided into two-way, connects the first nitrogen oxides detector, another way connection all the way First sulfur dioxide detector;
The outlet of the first nitrogen oxides detector and the first sulfur dioxide detector is collected by pipeline, and with it is described uniformly The air inlet of gas chamber is connected to, and the gas outlet of the uniform gas chamber is connected to the air inlet of fluid reservoir by pipeline;
The uniform gas chamber is additionally provided with the second air inlet for being passed through oxygen;
An agitating paddle is provided in the uniform gas chamber, the agitating paddle includes agitating shaft and agitator arm;
The agitating shaft is hollow design, and the upper end of the agitating shaft is connected to the air inlet of uniform gas chamber;
It is set as cavity at the center of the agitator arm, and offers venthole at the center of agitator arm, the paddle Wheel is connected to the lower end of agitating shaft;
The bottom of the agitator arm is provided with air inlet guide shell, and air inlet guide shell bottom and the second air inlet pass through pipeline Connection;
The gas exhaust piping of the fluid reservoir is divided into two-way, connects the second nitrogen oxides detector, another way connection the two or two all the way Sulfur oxide detector.
Further, electrostatic device is provided in above-mentioned electrostatic dust removal mechanism, the electrostatic device is connect with external power supply.
Further, above-mentioned electrostatic dust removal mechanism bottom is provided with ash bucket.
Further, activated carbon filter structure is provided between above-mentioned uniform gas chamber and electrostatic dust removal mechanism.
Beneficial effects of the present invention:
1. flue-gas dust-removing and desulfurization nitrogen rejection facility of the invention, desulfurization removing nitric effect is good, and structure is simple, at low cost, answers conducive to popularization With;
2. flue-gas dust-removing and desulfurization nitrogen rejection facility of the invention, to before fume treatment nitrogen oxides and sulfur dioxide examine It surveys, and nitrogen oxides in treated gas and sulfur dioxide can be detected;
3. uniform gas chamber of the invention comes into full contact with flue gas and oxygen, be conducive to the NO in flue gas being oxidized to NO2, Desulfurization removing nitric efficiency is improved, and the indoor gas mixing of uniform gas is uniform.
The present invention is described in further details below with reference to accompanying drawings and embodiments.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the present embodiment flue-gas dust-removing and desulfurization nitrogen rejection facility.
In figure: 1, smoke inlet;2, electrostatic dust removal mechanism;3, uniform gas chamber;4, fluid reservoir;5, the second air inlet;6, it stirs Mix paddle;61, agitating shaft;62, agitator arm;63, air inlet guide shell;7, the first nitrogen oxides detector;8, the first sulfur dioxide Detector;9, the second nitrogen oxides detector;10, the second sulfur dioxide detector.
Specific embodiment
Reach the technical means and efficacy that predetermined purpose is taken for the present invention is further explained, below in conjunction with attached drawing and reality Example is applied to a specific embodiment of the invention, structure feature and its effect, detailed description are as follows.
It is poor and cannot be to gas before and after treatment in order to solve desulfurization removing nitric effect existing in the prior art The problem of middle nitrogen oxides and sulfur dioxide are detected, the present invention provides a kind of flue-gas dust-removing and desulfurizations with detection function Nitrogen rejection facility, desulfurization removing nitric effect is good, and structure is simple, at low cost, and can be to nitrogen oxidation in gas before and after treatment Object and sulfur dioxide are detected.
Referring to Fig.1, the flue-gas dust-removing and desulfurization nitrogen rejection facility, including smoke inlet 1 and electrostatic dust removal mechanism 2, electrostatic precipitation The air inlet of mechanism 2 is connected to smoke inlet 1, is removed to the dust in flue gas.The flue-gas dust-removing and desulfurization nitrogen rejection facility is also Including uniform gas chamber 3, fluid reservoir 4, the first nitrogen oxides detector 7, the first sulfur dioxide detector 8, the second nitrogen oxidation quality testing Survey device 9 and the second sulfur dioxide detector 10.
The gas exhaust piping of the electrostatic dust removal mechanism 2 of the present embodiment is divided into two-way, connects the first nitrogen oxides detector all the way 7, another way connects the first sulfur dioxide detector 8.First nitrogen oxides detector 7 and the first sulfur dioxide detector 8 go out Mouth is collected by pipeline, and is connected to the air inlet of uniform gas chamber 3, and the gas outlet of uniform gas chamber 3 and the air inlet of fluid reservoir 4 are logical Piping connection, can detect the content of nitrogen oxides and sulfur dioxide before fume treatment.
An agitating paddle 6 is provided in the uniform gas chamber 3 of the present embodiment, agitating paddle 6 includes agitating shaft 61 and agitator arm 62, Agitating shaft 61 is hollow design, and the upper end of agitating shaft 61 is connected to the air inlet of uniform gas chamber 3, sets at the center of agitator arm 62 It is set to cavity, and offers venthole at the center of agitator arm 62, agitator arm 62 is connected to the lower end of agitating shaft 61, stirring The bottom of impeller 62 is provided with air inlet guide shell 63.Uniform gas chamber 3 is additionally provided with the second air inlet 5 for being passed through oxygen, and air inlet is led 63 bottom of flow cartridge is connected to the second air inlet 5 by pipeline.The uniform gas chamber comes into full contact with flue gas and oxygen, is conducive to NO in flue gas is oxidized to NO2, desulfurization removing nitric efficiency is improved, and the indoor gas mixing of uniform gas is uniform.
The gas exhaust piping of the present embodiment fluid reservoir 4 is divided into two-way, connects the second nitrogen oxides detector 9, another way all the way The second sulfur dioxide detector 10 is connected, the content of treated nitrogen oxides and sulfur dioxide can be detected.Liquid storage Lye is stored in room 8, it can be with NO2、SO2It is reacted, generates nitrate and sulfate.
Electrostatic device is provided in electrostatic dust removal mechanism 2, electrostatic device is connect with external power supply, using electrostatic precipitation mode, is removed Dirt effect is good.2 bottom of electrostatic dust removal mechanism is provided with ash bucket, can be collected to dust.Uniform gas chamber 3 and electrostatic cleaner Activated carbon filter structure is provided between structure 2, can to gas harmful gas (formaldehyde, benzene homologues, ammonia, radon, TVOC, etc. nocuousness Object) it is removed.
Working principle:
The flue gas that boiler generates passes through the first nitrogen oxides detector and the first sulfur dioxide after electrostatic dust removal mechanism dedusting Detector detects the content of nitrogen oxides and sulfur dioxide in flue gas, leads to subsequently into uniform gas chamber, then into uniform gas chamber Enter oxygen, the NO in flue gas is oxidized to N02, subsequently into fluid reservoir, exhaust gas and spray containing sulfur dioxide and nitrogen dioxide The lye of leaching is contacted, and lye absorbs most sulfur-containing compound and nitrogenous compound, realizes the purpose of desulfurization and denitrogenation, Pass through containing for nitrogen oxides in the second nitrogen oxides detector and the second sulfur dioxide detector detection gas and sulfur dioxide Amount.It is specific that the reaction mechanism is as follows:
The oxidation reaction of NO:
2NO+O2→2NO2
Nitrogen oxides after oxidation reacts in fluid reservoir with alkali:
2NO2+H2O→HNO3+HNO2
2HNO3+Na(OH)2→Na(NO3)+2H2O;
2HNO2+Na(OH)2→Na(NO2)2+2H2O;
2NaOH+SO2→Na2SO3+H2O;
Na2SO3+SO2+H2O→2NaHSO3
Na2SO3+1/2O2→Na2SO4
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention Protection scope.

Claims (4)

1. a kind of flue-gas dust-removing and desulfurization nitrogen rejection facility with detection function, including smoke inlet (1) and electrostatic dust removal mechanism (2), the air inlet of the electrostatic dust removal mechanism (2) is connected to smoke inlet (1), it is characterised in that: further includes uniform gas chamber (3), fluid reservoir (4), the first nitrogen oxides detector (7), the first sulfur dioxide detector (8), the second nitrogen oxides detector (9) and the second sulfur dioxide detector (10);
The gas exhaust piping of the electrostatic dust removal mechanism (2) is divided into two-way, connects the first nitrogen oxides detector (7) all the way, another Road connects the first sulfur dioxide detector (8);
The outlet of the first nitrogen oxides detector (7) and the first sulfur dioxide detector (8) is collected by pipeline, and with institute The air inlet connection of uniform gas chamber (3) is stated, the gas outlet of the uniform gas chamber (3) and the air inlet of fluid reservoir (4) pass through pipeline Connection;
The uniform gas chamber (3) is additionally provided with the second air inlet (5) for being passed through oxygen;
It is provided with an agitating paddle (6) in the uniform gas chamber (3), the agitating paddle (6) includes agitating shaft (61) and agitator arm (62);
The agitating shaft (61) is hollow design, and the upper end of the agitating shaft (61) is connected to the air inlet of uniform gas chamber (3);
It is set as cavity at the center of the agitator arm (62), and offers outlet at the center of the agitator arm (62) Hole, the agitator arm (62) are connected to the lower end of agitating shaft (61);
The bottom of the agitator arm (62) is provided with air inlet guide shell (63), air inlet guide shell (63) bottom with second into Port (5) is connected to by pipeline;
The gas exhaust piping of the fluid reservoir (4) is divided into two-way, connects the second nitrogen oxides detector (9), another way connection all the way Second sulfur dioxide detector (10).
2. flue-gas dust-removing and desulfurization nitrogen rejection facility as described in claim 1, which is characterized in that in the electrostatic dust removal mechanism (2) It is provided with electrostatic device, the electrostatic device is connect with external power supply.
3. flue-gas dust-removing and desulfurization nitrogen rejection facility as claimed in claim 2, which is characterized in that electrostatic dust removal mechanism (2) bottom Portion is provided with ash bucket.
4. flue-gas dust-removing and desulfurization nitrogen rejection facility as claimed in claim 3, which is characterized in that the uniform gas chamber (3) and electrostatic Dedusting mechanism is provided with activated carbon filter structure between (2).
CN201711334223.1A 2017-12-14 2017-12-14 A kind of flue-gas dust-removing and desulfurization nitrogen rejection facility with detection function Withdrawn CN109954392A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111579437A (en) * 2020-05-27 2020-08-25 丹晟实业(上海)有限公司 Extraction testing arrangement of sulphur and nitrogen element content in haydite

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111579437A (en) * 2020-05-27 2020-08-25 丹晟实业(上海)有限公司 Extraction testing arrangement of sulphur and nitrogen element content in haydite
CN111579437B (en) * 2020-05-27 2023-04-07 丹晟实业(上海)有限公司 Extraction testing arrangement of sulphur and nitrogen element content in haydite

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Application publication date: 20190702